Mercurial > hg > toybox
annotate lib/lib.c @ 848:feea7a8ecbb1
Redo find's indenting from tabs to two spaces.
author | Rob Landley <rob@landley.net> |
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date | Wed, 10 Apr 2013 19:58:21 -0500 |
parents | 16bcabb8cf97 |
children | 34ac05521d94 |
rev | line source |
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250
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Fix filename in header
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1 /* lib.c - reusable stuff. |
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2 * |
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3 * Functions with the x prefix are wrappers for library functions. They either |
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4 * succeed or kill the program with an error message, but never return failure. |
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5 * They usually have the same arguments and return value as the function they |
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6 * wrap. |
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7 * |
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8 * Copyright 2006 Rob Landley <rob@landley.net> |
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9 */ |
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10 |
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11 #include "toys.h" |
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12 |
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Replace strlcpy() with xstrcpy(), which exits if the string won't fit.
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13 // Strcpy with size checking: exit if there's not enough space for the string. |
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14 void xstrcpy(char *dest, char *src, size_t size) |
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15 { |
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16 if (strlen(src)+1 > size) error_exit("xstrcpy"); |
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17 strcpy(dest, src); |
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18 } |
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19 |
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20 void verror_msg(char *msg, int err, va_list va) |
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21 { |
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22 char *s = ": %s"; |
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23 |
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24 fprintf(stderr, "%s: ", toys.which->name); |
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25 if (msg) vfprintf(stderr, msg, va); |
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26 else s+=2; |
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27 if (err) fprintf(stderr, s, strerror(err)); |
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28 putc('\n', stderr); |
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29 if (!toys.exitval) toys.exitval++; |
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30 } |
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31 |
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32 void error_msg(char *msg, ...) |
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33 { |
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34 va_list va; |
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35 |
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36 va_start(va, msg); |
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37 verror_msg(msg, 0, va); |
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38 va_end(va); |
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39 } |
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40 |
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41 void perror_msg(char *msg, ...) |
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42 { |
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43 va_list va; |
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44 |
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45 va_start(va, msg); |
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46 verror_msg(msg, errno, va); |
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47 va_end(va); |
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48 } |
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49 |
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50 // Die with an error message. |
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51 void error_exit(char *msg, ...) |
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52 { |
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53 va_list va; |
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54 |
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55 if (CFG_HELP && toys.exithelp) { |
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56 *toys.optargs=*toys.argv; |
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57 USE_HELP(help_main();) // dear gcc: shut up. |
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58 fprintf(stderr,"\n"); |
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59 } |
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60 |
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61 va_start(va, msg); |
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62 verror_msg(msg, 0, va); |
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63 va_end(va); |
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64 |
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65 if (toys.rebound) longjmp(*toys.rebound, 1); |
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66 else exit(toys.exitval); |
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67 } |
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68 |
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69 |
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70 // Die with an error message and strerror(errno) |
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71 void perror_exit(char *msg, ...) |
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72 { |
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73 va_list va; |
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74 |
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75 va_start(va, msg); |
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76 verror_msg(msg, errno, va); |
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77 va_end(va); |
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78 |
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79 if (toys.rebound) longjmp(*toys.rebound, 1); |
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80 else exit(toys.exitval); |
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81 } |
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82 |
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83 // Die unless we can allocate memory. |
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84 void *xmalloc(size_t size) |
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85 { |
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86 void *ret = malloc(size); |
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87 if (!ret) error_exit("xmalloc"); |
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88 |
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89 return ret; |
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90 } |
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91 |
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92 // Die unless we can allocate prezeroed memory. |
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93 void *xzalloc(size_t size) |
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94 { |
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95 void *ret = xmalloc(size); |
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96 memset(ret, 0, size); |
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97 return ret; |
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98 } |
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99 |
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100 // Die unless we can change the size of an existing allocation, possibly |
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101 // moving it. (Notice different arguments from libc function.) |
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102 void *xrealloc(void *ptr, size_t size) |
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103 { |
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104 ptr = realloc(ptr, size); |
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105 if (!ptr) error_exit("xrealloc"); |
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106 |
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107 return ptr; |
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108 } |
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109 |
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110 // Die unless we can allocate a copy of this many bytes of string. |
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111 char *xstrndup(char *s, size_t n) |
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112 { |
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113 char *ret = xmalloc(++n); |
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114 strncpy(ret, s, n); |
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115 ret[--n]=0; |
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116 |
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117 return ret; |
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118 } |
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119 |
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120 // Die unless we can allocate a copy of this string. |
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121 char *xstrdup(char *s) |
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122 { |
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123 return xstrndup(s, strlen(s)); |
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124 } |
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125 |
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126 // Die unless we can allocate enough space to sprintf() into. |
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127 char *xmsprintf(char *format, ...) |
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128 { |
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129 va_list va, va2; |
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130 int len; |
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131 char *ret; |
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132 |
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133 va_start(va, format); |
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134 va_copy(va2, va); |
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135 |
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136 // How long is it? |
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137 len = vsnprintf(0, 0, format, va); |
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138 len++; |
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139 va_end(va); |
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140 |
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141 // Allocate and do the sprintf() |
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142 ret = xmalloc(len); |
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143 vsnprintf(ret, len, format, va2); |
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144 va_end(va2); |
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145 |
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146 return ret; |
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147 } |
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148 |
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149 void xprintf(char *format, ...) |
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150 { |
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151 va_list va; |
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152 va_start(va, format); |
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153 |
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154 vprintf(format, va); |
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155 if (ferror(stdout)) perror_exit("write"); |
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156 } |
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157 |
128
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158 void xputs(char *s) |
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159 { |
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160 if (EOF == puts(s) || fflush(stdout)) perror_exit("write"); |
128
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161 } |
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162 |
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163 void xputc(char c) |
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164 { |
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165 if (EOF == fputc(c, stdout) || fflush(stdout)) perror_exit("write"); |
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166 } |
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167 |
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168 void xflush(void) |
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169 { |
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170 if (fflush(stdout)) perror_exit("write");; |
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171 } |
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172 |
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173 // Die unless we can exec argv[] (or run builtin command). Note that anything |
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174 // with a path isn't a builtin, so /bin/sh won't match the builtin sh. |
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175 void xexec(char **argv) |
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176 { |
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177 toy_exec(argv); |
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178 execvp(argv[0], argv); |
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179 |
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180 perror_exit("exec %s", argv[0]); |
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181 } |
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182 |
51 | 183 void xaccess(char *path, int flags) |
184 { | |
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185 if (access(path, flags)) perror_exit("Can't access '%s'", path); |
51 | 186 } |
187 | |
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188 // Die unless we can delete a file. (File must exist to be deleted.) |
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189 void xunlink(char *path) |
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190 { |
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191 if (unlink(path)) perror_exit("unlink '%s'", path); |
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192 } |
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193 |
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194 // Die unless we can open/create a file, returning file descriptor. |
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195 int xcreate(char *path, int flags, int mode) |
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196 { |
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197 int fd = open(path, flags, mode); |
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198 if (fd == -1) perror_exit("%s", path); |
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199 return fd; |
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200 } |
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201 |
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202 // Die unless we can open a file, returning file descriptor. |
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203 int xopen(char *path, int flags) |
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204 { |
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205 return xcreate(path, flags, 0); |
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206 } |
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207 |
201
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208 void xclose(int fd) |
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209 { |
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210 if (close(fd)) perror_exit("xclose"); |
201
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211 } |
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212 |
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213 int xdup(int fd) |
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214 { |
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215 if (fd != -1) { |
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216 fd = dup(fd); |
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217 if (fd == -1) perror_exit("xdup"); |
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218 } |
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219 return fd; |
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220 } |
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221 |
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222 // Die unless we can open/create a file, returning FILE *. |
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223 FILE *xfopen(char *path, char *mode) |
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224 { |
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225 FILE *f = fopen(path, mode); |
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226 if (!f) perror_exit("No file %s", path); |
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227 return f; |
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228 } |
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229 |
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230 // Keep reading until full or EOF |
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231 ssize_t readall(int fd, void *buf, size_t len) |
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232 { |
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233 size_t count = 0; |
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234 |
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235 while (count<len) { |
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236 int i = read(fd, buf+count, len-count); |
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237 if (!i) break; |
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238 if (i<0) return i; |
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239 count += i; |
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240 } |
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241 |
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242 return count; |
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243 } |
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244 |
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245 // Keep writing until done or EOF |
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246 ssize_t writeall(int fd, void *buf, size_t len) |
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247 { |
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248 size_t count = 0; |
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249 while (count<len) { |
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250 int i = write(fd, buf+count, len-count); |
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251 if (i<1) return i; |
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252 count += i; |
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253 } |
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254 |
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255 return count; |
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256 } |
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257 |
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258 // Die if there's an error other than EOF. |
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259 size_t xread(int fd, void *buf, size_t len) |
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260 { |
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261 ssize_t ret = read(fd, buf, len); |
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262 if (ret < 0) perror_exit("xread"); |
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263 |
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264 return ret; |
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265 } |
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266 |
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267 void xreadall(int fd, void *buf, size_t len) |
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268 { |
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269 if (len != readall(fd, buf, len)) perror_exit("xreadall"); |
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270 } |
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271 |
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272 // There's no xwriteall(), just xwrite(). When we read, there may or may not |
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273 // be more data waiting. When we write, there is data and it had better go |
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274 // somewhere. |
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275 |
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276 void xwrite(int fd, void *buf, size_t len) |
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277 { |
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278 if (len != writeall(fd, buf, len)) perror_exit("xwrite"); |
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279 } |
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280 |
340 | 281 // Die if lseek fails, probably due to being called on a pipe. |
282 | |
283 off_t xlseek(int fd, off_t offset, int whence) | |
284 { | |
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285 offset = lseek(fd, offset, whence); |
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286 if (offset<0) perror_exit("lseek"); |
340 | 287 |
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288 return offset; |
340 | 289 } |
290 | |
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291 off_t lskip(int fd, off_t offset) |
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292 { |
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293 off_t and = lseek(fd, offset, SEEK_CUR); |
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294 |
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295 if (and != -1 && offset >= lseek(fd, offset, SEEK_END) |
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296 && offset+and == lseek(fd, offset+and, SEEK_SET)) return 0; |
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297 else { |
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298 char buf[4096]; |
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299 while (offset>0) { |
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300 int try = offset>sizeof(buf) ? sizeof(buf) : offset, or; |
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301 |
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302 or = readall(fd, buf, try); |
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303 if (or < 0) perror_msg("lskip to %lld", (long long)offset); |
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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
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|
304 else offset -= try; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
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|
305 if (or < try) break; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
306 } |
623
f51beec92738
New infrastructure for od (oops).
Rob Landley <rob@landley.net>
parents:
615
diff
changeset
|
307 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
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|
308 return offset; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
309 } |
623
f51beec92738
New infrastructure for od (oops).
Rob Landley <rob@landley.net>
parents:
615
diff
changeset
|
310 } |
f51beec92738
New infrastructure for od (oops).
Rob Landley <rob@landley.net>
parents:
615
diff
changeset
|
311 |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
312 char *xgetcwd(void) |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
313 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
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diff
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|
314 char *buf = getcwd(NULL, 0); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
315 if (!buf) perror_exit("xgetcwd"); |
7
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
316 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
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changeset
|
317 return buf; |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
318 } |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
319 |
95
a636e4d20f13
Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents:
77
diff
changeset
|
320 void xstat(char *path, struct stat *st) |
a636e4d20f13
Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents:
77
diff
changeset
|
321 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
322 if(stat(path, st)) perror_exit("Can't stat %s", path); |
95
a636e4d20f13
Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents:
77
diff
changeset
|
323 } |
a636e4d20f13
Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents:
77
diff
changeset
|
324 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
325 // Split a path into linked list of components, tracking head and tail of list. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
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diff
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|
326 // Filters out // entries with no contents. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
327 struct string_list **splitpath(char *path, struct string_list **list) |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
328 { |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
329 char *new = path; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
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diff
changeset
|
330 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
331 *list = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
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diff
changeset
|
332 do { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
333 int len; |
16
dd10785b6532
Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents:
8
diff
changeset
|
334 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
335 if (*path && *path != '/') continue; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
336 len = path-new; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
337 if (len > 0) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
338 *list = xmalloc(sizeof(struct string_list) + len + 1); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
339 (*list)->next = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
340 strncpy((*list)->str, new, len); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
341 (*list)->str[len] = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
342 list = &(*list)->next; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
343 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
344 new = path+1; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
345 } while (*path++); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
346 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
347 return list; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
348 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
349 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
350 // Cannonicalize path, even to file with one or more missing components at end. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
351 // if exact, require last path component to exist |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
352 char *xabspath(char *path, int exact) |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
353 { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
354 struct string_list *todo, *done = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
355 int try = 9999, dirfd = open("/", 0);; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
356 char buf[4096], *ret; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
357 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
358 // If this isn't an absolute path, start with cwd. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
359 if (*path != '/') { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
360 char *temp = xgetcwd(); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
361 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
362 splitpath(path, splitpath(temp, &todo)); |
707
977e19296b3f
Update readlink so -f works. Add -menq while there.
Rob Landley <rob@landley.net>
parents:
698
diff
changeset
|
363 free(temp); |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
364 } else splitpath(path, &todo); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
365 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
366 // Iterate through path components |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
367 while (todo) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
368 struct string_list *new = llist_pop(&todo), **tail; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
369 ssize_t len; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
370 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
371 if (!try--) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
372 errno = ELOOP; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
373 goto error; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
374 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
375 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
376 // Removable path componenents. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
377 if (!strcmp(new->str, ".") || !strcmp(new->str, "..")) { |
791
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
378 int x = new->str[1]; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
379 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
380 free(new); |
791
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
381 if (x) { |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
382 if (done) free(llist_pop(&done)); |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
383 len = 0; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
384 } else continue; |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
385 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
386 // Is this a symlink? |
791
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
387 } else len=readlinkat(dirfd, new->str, buf, 4096); |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
388 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
389 if (len>4095) goto error; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
390 if (len<1) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
391 int fd; |
791
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
392 char *s = ".."; |
156
1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents:
153
diff
changeset
|
393 |
791
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
394 // For .. just move dirfd |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
395 if (len) { |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
396 // Not a symlink: add to linked list, move dirfd, fail if error |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
397 if ((exact || todo) && errno != EINVAL) goto error; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
398 new->next = done; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
399 done = new; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
400 s = new->str; |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
401 } |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
402 fd = openat(dirfd, s, 0); |
126cd3b8015c
Fix xabspath() resolving symlink after .., and properly detecting failure for last entry after nondir.
Rob Landley <rob@landley.net>
parents:
780
diff
changeset
|
403 if (fd == -1 && (exact || todo || errno != ENOENT)) goto error; |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
404 close(dirfd); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
405 dirfd = fd; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
406 continue; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
407 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
408 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
409 // If this symlink is to an absolute path, discard existing resolved path |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
410 buf[len] = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
411 if (*buf == '/') { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
412 llist_traverse(done, free); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
413 done=0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
414 close(dirfd); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
415 dirfd = open("/", 0); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
416 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
417 free(new); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
418 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
419 // prepend components of new path. Note symlink to "/" will leave new NULL |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
420 tail = splitpath(buf, &new); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
421 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
422 // symlink to "/" will return null and leave tail alone |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
423 if (new) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
424 *tail = todo; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
425 todo = new; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
426 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
427 } |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
428 close(dirfd); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
429 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
430 // At this point done has the path, in reverse order. Reverse list while |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
431 // calculating buffer length. |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
432 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
433 try = 2; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
434 while (done) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
435 struct string_list *temp = llist_pop(&done);; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
436 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
437 if (todo) try++; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
438 try += strlen(temp->str); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
439 temp->next = todo; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
440 todo = temp; |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
441 } |
16
dd10785b6532
Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents:
8
diff
changeset
|
442 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
443 // Assemble return buffer |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
444 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
445 ret = xmalloc(try); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
446 *ret = '/'; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
447 ret [try = 1] = 0; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
448 while (todo) { |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
449 if (try>1) ret[try++] = '/'; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
450 try = stpcpy(ret+try, todo->str) - ret; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
451 free(llist_pop(&todo)); |
707
977e19296b3f
Update readlink so -f works. Add -menq while there.
Rob Landley <rob@landley.net>
parents:
698
diff
changeset
|
452 } |
977e19296b3f
Update readlink so -f works. Add -menq while there.
Rob Landley <rob@landley.net>
parents:
698
diff
changeset
|
453 |
708
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
454 return ret; |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
455 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
456 error: |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
457 close(dirfd); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
458 llist_traverse(todo, free); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
459 llist_traverse(done, free); |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
460 |
50d759f8b371
Remove readlink -m for being poorly defined ("readlink -m /dev/null/and/more" answers what question, exactly?), rewrite xabspath() to work right and not depend on realpath, fix subtle longstanding bug in llist_traverse().
Rob Landley <rob@landley.net>
parents:
707
diff
changeset
|
461 return NULL; |
16
dd10785b6532
Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents:
8
diff
changeset
|
462 } |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
463 |
585
1dcd7994abea
Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents:
578
diff
changeset
|
464 // Resolve all symlinks, returning malloc() memory. |
1dcd7994abea
Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents:
578
diff
changeset
|
465 char *xrealpath(char *path) |
1dcd7994abea
Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents:
578
diff
changeset
|
466 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
467 char *new = realpath(path, NULL); |
786841fdb1e0
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468 if (!new) perror_exit("realpath '%s'", path); |
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469 return new; |
585
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470 } |
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471 |
292
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472 void xchdir(char *path) |
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473 { |
694
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474 if (chdir(path)) error_exit("chdir '%s'", path); |
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475 } |
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476 |
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477 // Ensure entire path exists. |
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478 // If mode != -1 set permissions on newly created dirs. |
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479 // Requires that path string be writable (for temporary null terminators). |
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480 void xmkpath(char *path, int mode) |
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481 { |
694
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482 char *p, old; |
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483 mode_t mask; |
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484 int rc; |
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485 struct stat st; |
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486 |
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487 for (p = path; ; p++) { |
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488 if (!*p || *p == '/') { |
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489 old = *p; |
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490 *p = rc = 0; |
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491 if (stat(path, &st) || !S_ISDIR(st.st_mode)) { |
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492 if (mode != -1) { |
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493 mask=umask(0); |
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494 rc = mkdir(path, mode); |
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495 umask(mask); |
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496 } else rc = mkdir(path, 0777); |
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497 } |
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498 *p = old; |
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499 if(rc) perror_exit("mkpath '%s'", path); |
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500 } |
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501 if (!*p) break; |
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502 } |
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503 } |
370 | 504 |
505 // setuid() can fail (for example, too many processes belonging to that user), | |
506 // which opens a security hole if the process continues as the original user. | |
507 | |
508 void xsetuid(uid_t uid) | |
509 { | |
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510 if (setuid(uid)) perror_exit("xsetuid"); |
370 | 511 } |
512 | |
513 | |
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514 // Find all file in a colon-separated path with access type "type" (generally |
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515 // X_OK or R_OK). Returns a list of absolute paths to each file found, in |
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516 // order. |
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517 |
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518 struct string_list *find_in_path(char *path, char *filename) |
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519 { |
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520 struct string_list *rlist = NULL, **prlist=&rlist; |
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521 char *cwd = xgetcwd(); |
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522 |
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523 for (;;) { |
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524 char *next = path ? strchr(path, ':') : NULL; |
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525 int len = next ? next-path : strlen(path); |
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526 struct string_list *rnext; |
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527 struct stat st; |
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528 |
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529 rnext = xmalloc(sizeof(void *) + strlen(filename) |
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530 + (len ? len : strlen(cwd)) + 2); |
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531 if (!len) sprintf(rnext->str, "%s/%s", cwd, filename); |
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532 else { |
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533 char *res = rnext->str; |
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534 strncpy(res, path, len); |
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535 res += len; |
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536 *(res++) = '/'; |
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537 strcpy(res, filename); |
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538 } |
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539 |
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540 // Confirm it's not a directory. |
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541 if (!stat(rnext->str, &st) && S_ISREG(st.st_mode)) { |
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542 *prlist = rnext; |
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543 rnext->next = NULL; |
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544 prlist = &(rnext->next); |
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545 } else free(rnext); |
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546 |
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547 if (!next) break; |
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548 path += len; |
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549 path++; |
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550 } |
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551 free(cwd); |
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552 |
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553 return rlist; |
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554 } |
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555 |
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556 // Convert unsigned int to ascii, writing into supplied buffer. A truncated |
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557 // result contains the first few digits of the result ala strncpy, and is |
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558 // always null terminated (unless buflen is 0). |
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559 void utoa_to_buf(unsigned n, char *buf, unsigned buflen) |
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560 { |
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561 int i, out = 0; |
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562 |
694
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563 if (buflen) { |
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564 for (i=1000000000; i; i/=10) { |
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565 int res = n/i; |
7
fc9c0503d5e2
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566 |
694
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567 if ((res || out || i == 1) && --buflen>0) { |
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568 out++; |
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569 n -= res*i; |
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570 *buf++ = '0' + res; |
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571 } |
786841fdb1e0
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572 } |
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573 *buf = 0; |
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|
574 } |
7
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575 } |
fc9c0503d5e2
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diff
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|
576 |
fc9c0503d5e2
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|
577 // Convert signed integer to ascii, using utoa_to_buf() |
fc9c0503d5e2
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578 void itoa_to_buf(int n, char *buf, unsigned buflen) |
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579 { |
694
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580 if (buflen && n<0) { |
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581 n = -n; |
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582 *buf++ = '-'; |
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583 buflen--; |
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584 } |
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585 utoa_to_buf((unsigned)n, buf, buflen); |
7
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586 } |
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587 |
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588 // This static buffer is used by both utoa() and itoa(), calling either one a |
fc9c0503d5e2
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589 // second time will overwrite the previous results. |
fc9c0503d5e2
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|
590 // |
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|
591 // The longest 32 bit integer is -2 billion plus a null terminator: 12 bytes. |
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592 // Note that int is always 32 bits on any remotely unix-like system, see |
fc9c0503d5e2
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593 // http://www.unix.org/whitepapers/64bit.html for details. |
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|
594 |
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595 static char itoa_buf[12]; |
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|
596 |
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parents:
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diff
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|
597 // Convert unsigned integer to ascii, returning a static buffer. |
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598 char *utoa(unsigned n) |
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599 { |
694
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600 utoa_to_buf(n, itoa_buf, sizeof(itoa_buf)); |
7
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|
601 |
694
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602 return itoa_buf; |
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603 } |
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604 |
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|
605 char *itoa(int n) |
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606 { |
694
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607 itoa_to_buf(n, itoa_buf, sizeof(itoa_buf)); |
7
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608 |
694
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609 return itoa_buf; |
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610 } |
53
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611 |
102
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
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612 // atol() with the kilo/mega/giga/tera/peta/exa extensions. |
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613 // (zetta and yotta don't fit in 64 bits.) |
443
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Make atolx() error_exit() if fed a string that doesn't convert entirely into an integer.
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614 long atolx(char *numstr) |
102
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615 { |
694
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616 char *c, *suffixes="bkmgtpe", *end; |
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617 long val = strtol(numstr, &c, 0); |
102
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618 |
694
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619 if (*c) { |
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620 if (c != numstr && (end = strchr(suffixes, tolower(*c)))) { |
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621 int shift = end-suffixes; |
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622 if (shift--) val *= 1024L<<(shift*10); |
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623 } else { |
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624 while (isspace(*c)) c++; |
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625 if (*c) error_exit("not integer: %s", numstr); |
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626 } |
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627 } |
397
b7afbc6b753a
Forgot to check in loopfiles_rw changes needed by truncate.
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|
628 |
694
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629 return val; |
102
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630 } |
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631 |
565
44abf4d901f3
Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
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|
632 int numlen(long l) |
44abf4d901f3
Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
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|
633 { |
694
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634 int len = 0; |
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635 while (l) { |
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636 l /= 10; |
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637 len++; |
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638 } |
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|
639 return len; |
565
44abf4d901f3
Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
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|
640 } |
44abf4d901f3
Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
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|
641 |
623
f51beec92738
New infrastructure for od (oops).
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|
642 int stridx(char *haystack, char needle) |
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643 { |
694
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644 char *off; |
623
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|
645 |
694
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646 if (!needle) return -1; |
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647 off = strchr(haystack, needle); |
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648 if (!off) return -1; |
623
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|
649 |
694
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650 return off-haystack; |
623
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|
651 } |
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|
652 |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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653 // Return how long the file at fd is, if there's any way to determine it. |
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654 off_t fdlength(int fd) |
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655 { |
694
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656 off_t bottom = 0, top = 0, pos, old; |
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657 int size; |
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658 |
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659 // If the ioctl works for this, return it. |
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660 |
694
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661 if (ioctl(fd, BLKGETSIZE, &size) >= 0) return size*512L; |
53
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662 |
694
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663 // If not, do a binary search for the last location we can read. (Some |
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664 // block devices don't do BLKGETSIZE right.) This should probably have |
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665 // a CONFIG option... |
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666 |
694
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667 old = lseek(fd, 0, SEEK_CUR); |
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668 do { |
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669 char temp; |
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670 |
694
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671 pos = bottom + (top - bottom) / 2; |
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672 |
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673 // If we can read from the current location, it's bigger. |
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674 |
694
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675 if (lseek(fd, pos, 0)>=0 && read(fd, &temp, 1)==1) { |
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676 if (bottom == top) bottom = top = (top+1) * 2; |
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677 else bottom = pos; |
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678 |
694
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679 // If we can't, it's smaller. |
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680 |
694
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681 } else { |
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682 if (bottom == top) { |
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683 if (!top) return 0; |
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684 bottom = top/2; |
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685 } else top = pos; |
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686 } |
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687 } while (bottom + 1 != top); |
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688 |
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689 lseek(fd, old, SEEK_SET); |
310
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690 |
694
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691 return pos + 1; |
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692 } |
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693 |
115
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694 // This can return null (meaning file not found). It just won't return null |
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695 // for memory allocation reasons. |
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696 char *xreadlink(char *name) |
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697 { |
694
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698 int len, size = 0; |
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699 char *buf = 0; |
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700 |
694
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701 // Grow by 64 byte chunks until it's big enough. |
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702 for(;;) { |
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703 size +=64; |
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704 buf = xrealloc(buf, size); |
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705 len = readlink(name, buf, size); |
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706 |
694
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707 if (len<0) { |
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708 free(buf); |
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709 return 0; |
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710 } |
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711 if (len<size) { |
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712 buf[len]=0; |
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713 return buf; |
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714 } |
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715 } |
115
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716 } |
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717 |
77
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
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|
718 /* |
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719 This might be of use or might not. Unknown yet... |
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720 |
53
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721 // Read contents of file as a single freshly allocated nul-terminated string. |
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722 char *readfile(char *name) |
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723 { |
694
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724 off_t len; |
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725 int fd; |
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726 char *buf; |
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727 |
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|
728 fd = open(name, O_RDONLY); |
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729 if (fd == -1) return 0; |
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730 len = fdlength(fd); |
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731 buf = xmalloc(len+1); |
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732 buf[readall(fd, buf, len)] = 0; |
53
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733 |
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734 return buf; |
53
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735 } |
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|
736 |
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737 char *xreadfile(char *name) |
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738 { |
694
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|
739 char *buf = readfile(name); |
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|
740 if (!buf) perror_exit("xreadfile %s", name); |
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741 return buf; |
53
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742 } |
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743 |
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744 */ |
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745 |
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746 // Open a /var/run/NAME.pid file, dying if we can't write it or if it currently |
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747 // exists and is this executable. |
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748 void xpidfile(char *name) |
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749 { |
694
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750 char pidfile[256], spid[32]; |
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751 int i, fd; |
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752 pid_t pid; |
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753 |
694
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754 sprintf(pidfile, "/var/run/%s.pid", name); |
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755 // Try three times to open the sucker. |
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756 for (i=0; i<3; i++) { |
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757 fd = open(pidfile, O_CREAT|O_EXCL, 0644); |
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758 if (fd != -1) break; |
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759 |
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760 // If it already existed, read it. Loop for race condition. |
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761 fd = open(pidfile, O_RDONLY); |
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762 if (fd == -1) continue; |
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763 |
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764 // Is the old program still there? |
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765 spid[xread(fd, spid, sizeof(spid)-1)] = 0; |
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766 close(fd); |
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767 pid = atoi(spid); |
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768 if (pid < 1 || kill(pid, 0) == ESRCH) unlink(pidfile); |
53
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769 |
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770 // An else with more sanity checking might be nice here. |
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771 } |
156
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772 |
694
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773 if (i == 3) error_exit("xpidfile %s", name); |
53
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774 |
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775 xwrite(fd, spid, sprintf(spid, "%ld\n", (long)getpid())); |
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776 close(fd); |
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777 } |
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778 |
308 | 779 // Iterate through an array of files, opening each one and calling a function |
780 // on that filehandle and name. The special filename "-" means stdin if | |
781 // flags is O_RDONLY, stdout otherwise. An empty argument list calls | |
782 // function() on just stdin/stdout. | |
783 // | |
784 // Note: read only filehandles are automatically closed when function() | |
785 // returns, but writeable filehandles must be close by function() | |
397
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786 void loopfiles_rw(char **argv, int flags, int permissions, int failok, |
694
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787 void (*function)(int fd, char *name)) |
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788 { |
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789 int fd; |
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790 |
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791 // If no arguments, read from stdin. |
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792 if (!*argv) function(flags ? 1 : 0, "-"); |
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793 else do { |
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794 // Filename "-" means read from stdin. |
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795 // Inability to open a file prints a warning, but doesn't exit. |
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796 |
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797 if (!strcmp(*argv,"-")) fd=0; |
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798 else if (0>(fd = open(*argv, flags, permissions)) && !failok) { |
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799 perror_msg("%s", *argv); |
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800 toys.exitval = 1; |
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801 continue; |
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802 } |
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803 function(fd, *argv); |
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804 if (flags == O_RDONLY) close(fd); |
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805 } while (*++argv); |
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806 } |
201
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807 |
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808 // Call loopfiles_rw with O_RDONLY and !failok (common case). |
308 | 809 void loopfiles(char **argv, void (*function)(int fd, char *name)) |
810 { | |
694
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811 loopfiles_rw(argv, O_RDONLY, 0, 0, function); |
308 | 812 } |
813 | |
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814 // Slow, but small. |
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815 |
284
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816 char *get_rawline(int fd, long *plen, char end) |
201
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817 { |
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818 char c, *buf = NULL; |
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819 long len = 0; |
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820 |
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821 for (;;) { |
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822 if (1>read(fd, &c, 1)) break; |
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823 if (!(len & 63)) buf=xrealloc(buf, len+65); |
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824 if ((buf[len++]=c) == end) break; |
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825 } |
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826 if (buf) buf[len]=0; |
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827 if (plen) *plen = len; |
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828 |
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829 return buf; |
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830 } |
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831 |
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832 char *get_line(int fd) |
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833 { |
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834 long len; |
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835 char *buf = get_rawline(fd, &len, '\n'); |
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836 |
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837 if (buf && buf[--len]=='\n') buf[len]=0; |
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838 |
694
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839 return buf; |
201
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840 } |
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841 |
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842 // Copy the rest of in to out and close both files. |
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843 |
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844 void xsendfile(int in, int out) |
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845 { |
694
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846 long len; |
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847 char buf[4096]; |
201
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848 |
694
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849 if (in<0) return; |
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850 for (;;) { |
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851 len = xread(in, buf, 4096); |
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852 if (len<1) break; |
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853 xwrite(out, buf, len); |
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854 } |
209 | 855 } |
856 | |
590
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857 int wfchmodat(int fd, char *name, mode_t mode) |
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858 { |
694
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859 int rc = fchmodat(fd, name, mode, 0); |
590
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860 |
694
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861 if (rc) { |
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862 perror_msg("chmod '%s' to %04o", name, mode); |
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863 toys.exitval=1; |
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864 } |
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865 return rc; |
590
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866 } |
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|
867 |
643
7bdebd2af1d6
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868 static char *tempfile2zap; |
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869 static void tempfile_handler(int i) |
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870 { |
694
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871 if (1 < (long)tempfile2zap) unlink(tempfile2zap); |
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872 _exit(1); |
643
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873 } |
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874 |
209 | 875 // Open a temporary file to copy an existing file into. |
876 int copy_tempfile(int fdin, char *name, char **tempname) | |
877 { | |
694
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878 struct stat statbuf; |
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879 int fd; |
209 | 880 |
694
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881 *tempname = xstrndup(name, strlen(name)+6); |
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882 strcat(*tempname,"XXXXXX"); |
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883 if(-1 == (fd = mkstemp(*tempname))) error_exit("no temp file"); |
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884 if (!tempfile2zap) sigatexit(tempfile_handler); |
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|
885 tempfile2zap = *tempname; |
209 | 886 |
694
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|
887 // Set permissions of output file |
209 | 888 |
694
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889 fstat(fdin, &statbuf); |
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890 fchmod(fd, statbuf.st_mode); |
209 | 891 |
694
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892 return fd; |
201
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893 } |
209 | 894 |
895 // Abort the copy and delete the temporary file. | |
896 void delete_tempfile(int fdin, int fdout, char **tempname) | |
897 { | |
694
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898 close(fdin); |
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899 close(fdout); |
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900 unlink(*tempname); |
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901 tempfile2zap = (char *)1; |
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902 free(*tempname); |
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|
903 *tempname = NULL; |
209 | 904 } |
905 | |
906 // Copy the rest of the data and replace the original with the copy. | |
907 void replace_tempfile(int fdin, int fdout, char **tempname) | |
908 { | |
694
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|
909 char *temp = xstrdup(*tempname); |
209 | 910 |
694
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|
911 temp[strlen(temp)-6]=0; |
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912 if (fdin != -1) { |
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913 xsendfile(fdin, fdout); |
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|
914 xclose(fdin); |
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915 } |
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|
916 xclose(fdout); |
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917 rename(*tempname, temp); |
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918 tempfile2zap = (char *)1; |
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919 free(*tempname); |
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920 free(temp); |
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921 *tempname = NULL; |
209 | 922 } |
334
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Check in crc_init needed by cksum. (Oops.)
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923 |
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|
924 // Create a 256 entry CRC32 lookup table. |
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|
925 |
337
aaafa1ceaa91
Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
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334
diff
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|
926 void crc_init(unsigned int *crc_table, int little_endian) |
334
83c461db9df7
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927 { |
694
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928 unsigned int i; |
334
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929 |
694
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930 // Init the CRC32 table (big endian) |
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931 for (i=0; i<256; i++) { |
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932 unsigned int j, c = little_endian ? i : i<<24; |
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933 for (j=8; j; j--) |
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934 if (little_endian) c = (c&1) ? (c>>1)^0xEDB88320 : c>>1; |
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935 else c=c&0x80000000 ? (c<<1)^0x04c11db7 : (c<<1); |
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936 crc_table[i] = c; |
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937 } |
334
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938 } |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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diff
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|
939 |
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Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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399
diff
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|
940 // Quick and dirty query size of terminal, doesn't do ANSI probe fallback. |
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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|
941 // set *x=0 and *y=0 before calling to detect failure to set either, or |
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Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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942 // x=80 y=25 to provide defaults |
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|
943 |
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
944 void terminal_size(unsigned *x, unsigned *y) |
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
945 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
946 struct winsize ws; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
947 int i; |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
948 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
949 //memset(&ws, 0, sizeof(ws)); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
950 for (i=0; i<3; i++) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
951 if (ioctl(i, TIOCGWINSZ, &ws)) continue; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
952 if (x) *x = ws.ws_col; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
953 if (y) *y = ws.ws_row; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
954 } |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
955 if (x) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
956 char *s = getenv("COLUMNS"); |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
957 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
958 i = s ? atoi(s) : 0; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
959 if (i>0) *x = i; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
960 } |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
961 if (y) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
962 char *s = getenv("ROWS"); |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
963 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
964 i = s ? atoi(s) : 0; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
965 if (i>0) *y = i; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
966 } |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
967 } |
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
968 |
503
3b9dea897dc0
Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents:
498
diff
changeset
|
969 int yesno(char *prompt, int def) |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
970 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
971 char buf; |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
972 |
738
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
973 fprintf(stderr, "%s (%c/%c):", prompt, def ? 'Y' : 'y', def ? 'n' : 'N'); |
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
974 fflush(stderr); |
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
975 while (fread(&buf, 1, 1, stdin)) { |
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
976 int new; |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
977 |
798
16bcabb8cf97
Fix -in behavior: descend into existing directory without prompting, show full path in error messages, actually overwrite when answering yes to -i.
Rob Landley <rob@landley.net>
parents:
791
diff
changeset
|
978 // The letter changes the value, the newline (or space) returns it. |
738
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
979 if (isspace(buf)) break; |
075eaff297f8
Make yesno() always read from stdin and write to stderr. (If we need to find our tty, open /dev/tty, but existing users don't.)
Rob Landley <rob@landley.net>
parents:
715
diff
changeset
|
980 if (-1 != (new = stridx("ny", tolower(buf)))) def = new; |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
981 } |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
982 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
983 return def; |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
984 } |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
985 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
986 // Execute a callback for each PID that matches a process name from a list. |
762
f169d9708518
Extend killall with support for -v and -i
Elie De Brauwer <eliedebrauwer@gmail.com>
parents:
744
diff
changeset
|
987 void for_each_pid_with_name_in(char **names, int (*callback)(pid_t pid, char *name)) |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
988 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
989 DIR *dp; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
990 struct dirent *entry; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
991 char cmd[sizeof(toybuf)], path[64]; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
992 char **curname; |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
993 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
994 if (!(dp = opendir("/proc"))) perror_exit("opendir"); |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
995 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
996 while ((entry = readdir(dp))) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
997 int fd, n; |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
998 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
999 if (!isdigit(*entry->d_name)) continue; |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
1000 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1001 if (sizeof(path) <= snprintf(path, sizeof(path), "/proc/%s/cmdline", |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1002 entry->d_name)) continue; |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
1003 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1004 if (-1 == (fd=open(path, O_RDONLY))) continue; |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1005 n = read(fd, cmd, sizeof(cmd)); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1006 close(fd); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1007 if (n<1) continue; |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
1008 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1009 for (curname = names; *curname; curname++) |
744
43e6ec52aa29
Adding -s (single shot) and -o (omit pids) options to pidof
Elie De Brauwer <eliedebrauwer@gmail.com>
parents:
738
diff
changeset
|
1010 if (!strcmp(basename(cmd), *curname)) |
762
f169d9708518
Extend killall with support for -v and -i
Elie De Brauwer <eliedebrauwer@gmail.com>
parents:
744
diff
changeset
|
1011 if (!callback(atol(entry->d_name), *curname)) goto done; |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1012 } |
744
43e6ec52aa29
Adding -s (single shot) and -o (omit pids) options to pidof
Elie De Brauwer <eliedebrauwer@gmail.com>
parents:
738
diff
changeset
|
1013 done: |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1014 closedir(dp); |
475
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
1015 } |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1016 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1017 struct signame { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1018 int num; |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1019 char *name; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1020 }; |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1021 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1022 // Signals required by POSIX 2008: |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1023 // http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1024 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1025 #define SIGNIFY(x) {SIG##x, #x} |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1026 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1027 static struct signame signames[] = { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1028 SIGNIFY(ABRT), SIGNIFY(ALRM), SIGNIFY(BUS), |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1029 SIGNIFY(FPE), SIGNIFY(HUP), SIGNIFY(ILL), SIGNIFY(INT), SIGNIFY(KILL), |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1030 SIGNIFY(PIPE), SIGNIFY(QUIT), SIGNIFY(SEGV), SIGNIFY(TERM), |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
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diff
changeset
|
1031 SIGNIFY(USR1), SIGNIFY(USR2), SIGNIFY(SYS), SIGNIFY(TRAP), |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1032 SIGNIFY(VTALRM), SIGNIFY(XCPU), SIGNIFY(XFSZ), |
643
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1033 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1034 // Start of non-terminal signals |
643
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1035 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1036 SIGNIFY(CHLD), SIGNIFY(CONT), SIGNIFY(STOP), SIGNIFY(TSTP), |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1037 SIGNIFY(TTIN), SIGNIFY(TTOU), SIGNIFY(URG) |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1038 }; |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1039 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1040 // not in posix: SIGNIFY(STKFLT), SIGNIFY(WINCH), SIGNIFY(IO), SIGNIFY(PWR) |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1041 // obsolete: SIGNIFY(PROF) SIGNIFY(POLL) |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1042 |
643
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1043 // Install the same handler on every signal that defaults to killing the process |
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1044 void sigatexit(void *handler) |
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1045 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1046 int i; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1047 for (i=0; signames[i].num != SIGCHLD; i++) signal(signames[i].num, handler); |
643
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1048 } |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1049 // Convert name to signal number. If name == NULL print names. |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1050 int sig_to_num(char *pidstr) |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1051 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1052 int i; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1053 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1054 if (pidstr) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1055 char *s; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1056 i = strtol(pidstr, &s, 10); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1057 if (!*s) return i; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1058 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1059 if (!strncasecmp(pidstr, "sig", 3)) pidstr+=3; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1060 } |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1061 for (i = 0; i < sizeof(signames)/sizeof(struct signame); i++) |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1062 if (!pidstr) xputs(signames[i].name); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1063 else if (!strcasecmp(pidstr, signames[i].name)) return signames[i].num; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1064 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1065 return -1; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1066 } |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1067 |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1068 char *num_to_sig(int sig) |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1069 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1070 int i; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1071 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1072 for (i=0; i<sizeof(signames)/sizeof(struct signame); i++) |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1073 if (signames[i].num == sig) return signames[i].name; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1074 return NULL; |
498
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
1075 } |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1076 |
643
7bdebd2af1d6
Add signal handler to clean up tempfile.
Rob Landley <rob@landley.net>
parents:
640
diff
changeset
|
1077 // premute mode bits based on posix mode strings. |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1078 mode_t string_to_mode(char *modestr, mode_t mode) |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1079 { |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1080 char *whos = "ogua", *hows = "=+-", *whats = "xwrstX", *whys = "ogu"; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1081 char *s, *str = modestr; |
553 | 1082 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1083 // Handle octal mode |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1084 if (isdigit(*str)) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1085 mode = strtol(str, &s, 8); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1086 if (*s || (mode & ~(07777))) goto barf; |
553 | 1087 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1088 return mode; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1089 } |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1090 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1091 // Gaze into the bin of permission... |
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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1092 for (;;) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1093 int i, j, dowho, dohow, dowhat, amask; |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1094 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1095 dowho = dohow = dowhat = amask = 0; |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1096 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1097 // Find the who, how, and what stanzas, in that order |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1098 while (*str && (s = strchr(whos, *str))) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1099 dowho |= 1<<(s-whos); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1100 str++; |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1101 } |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1102 // If who isn't specified, like "a" but honoring umask. |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1103 if (!dowho) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1104 dowho = 8; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1105 umask(amask=umask(0)); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1106 } |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1107 if (!*str || !(s = strchr(hows, *str))) goto barf; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1108 dohow = *(str++); |
590
7becb497c3c4
Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents:
585
diff
changeset
|
1109 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1110 if (!dohow) goto barf; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1111 while (*str && (s = strchr(whats, *str))) { |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1112 dowhat |= 1<<(s-whats); |
786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1113 str++; |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
671
diff
changeset
|
1114 } |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1115 |
694
786841fdb1e0
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1116 // Convert X to x for directory or if already executable somewhere |
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1117 if ((dowhat&32) && (S_ISDIR(mode) || (mode&0111))) dowhat |= 1; |
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1118 |
694
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1119 // Copy mode from another category? |
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1120 if (!dowhat && *str && (s = strchr(whys, *str))) { |
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1121 dowhat = (mode>>(3*(s-whys)))&7; |
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1122 str++; |
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1123 } |
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1124 |
694
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1125 // Are we ready to do a thing yet? |
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1126 if (*str && *(str++) != ',') goto barf; |
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1127 |
694
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1128 // Ok, apply the bits to the mode. |
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1129 for (i=0; i<4; i++) { |
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1130 for (j=0; j<3; j++) { |
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1131 mode_t bit = 0; |
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1132 int where = 1<<((3*i)+j); |
638
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1133 |
694
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1134 if (amask & where) continue; |
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1135 |
694
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1136 // Figure out new value at this location |
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1137 if (i == 3) { |
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1138 // suid/sticky bit. |
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1139 if (j) { |
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1140 if ((dowhat & 8) && (dowho&(8|(1<<i)))) bit++; |
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1141 } else if (dowhat & 16) bit++; |
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1142 } else { |
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1143 if (!(dowho&(8|(1<<i)))) continue; |
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1144 if (dowhat&(1<<j)) bit++; |
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1145 } |
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1146 |
694
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1147 // When selection active, modify bit |
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1148 |
694
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1149 if (dohow == '=' || (bit && dohow == '-')) mode &= ~where; |
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1150 if (bit && dohow != '-') mode |= where; |
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1151 } |
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1152 } |
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1153 |
694
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1154 if (!*str) break; |
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1155 } |
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1156 return mode; |
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1157 barf: |
694
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1158 error_exit("bad mode '%s'", modestr); |
551
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Daniel Walter <d.walter@0x90.at>
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diff
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|
1159 } |
658 | 1160 |
1161 | |
1162 char* make_human_readable(unsigned long long size, unsigned long unit) | |
1163 { | |
694
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1164 unsigned int frac = 0; |
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1165 if(unit) { |
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1166 size = (size/(unit)) + (size%(unit)?1:0); |
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1167 return xmsprintf("%llu", size); |
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1168 } |
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1169 else { |
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1170 static char units[] = {'\0', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'}; |
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1171 int index = 0; |
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1172 while(size >= 1024) { |
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1173 frac = size%1024; |
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1174 size /= 1024; |
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1175 index++; |
658 | 1176 } |
694
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1177 frac = (frac/102) + ((frac%102)?1:0); |
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1178 if(frac >= 10) { |
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1179 size += 1; |
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1180 frac = 0; |
658 | 1181 } |
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1182 if(frac) return xmsprintf("%llu.%u%c", size, frac, units[index]); |
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1183 else return xmsprintf("%llu%c", size, units[index]); |
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1184 } |
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1185 return NULL; //not reached |
658 | 1186 } |
698
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1187 |
715
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1188 // strtoul with exit on error |
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1189 unsigned long xstrtoul(const char *nptr, char **endptr, int base) |
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1190 { |
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1191 unsigned long l; |
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1192 errno = 0; |
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1193 l = strtoul(nptr, endptr, base); |
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1194 if (errno) |
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1195 perror_exit("xstrtoul"); |
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1196 return l; |
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1197 } |
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1198 |
698
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1199 /* |
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1200 * used to get the interger value. |
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1201 */ |
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1202 unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange) |
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1203 { |
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1204 unsigned long rvalue = 0; |
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1205 char *ptr; |
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1206 if(*numstr == '-' || *numstr == '+' || isspace(*numstr)) perror_exit("invalid number '%s'", numstr); |
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1207 errno = 0; |
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1208 rvalue = strtoul(numstr, &ptr, 10); |
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1209 if(errno || numstr == ptr) perror_exit("invalid number '%s'", numstr); |
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parents:
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1210 if(*ptr) perror_exit("invalid number '%s'", numstr); |
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parents:
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1211 if(rvalue >= lowrange && rvalue <= highrange) return rvalue; |
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1212 else { |
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1213 perror_exit("invalid number '%s'", numstr); |
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1214 return rvalue; //Not reachable; to avoid waring message. |
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Rob Landley <rob@landley.net>
parents:
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1215 } |
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parents:
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1216 } |