Mercurial > hg > toybox
annotate lib/lib.c @ 553:75da5d793fc8
Unwind gratuitous macros.
author | Rob Landley <rob@landley.net> |
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date | Mon, 19 Mar 2012 20:56:18 -0500 |
parents | 2548e6e590b2 |
children | 997e016fbdf0 |
rev | line source |
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1 /* vi: set sw=4 ts=4 :*/ |
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2 /* lib.c - reusable stuff. |
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3 * |
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4 * Functions with the x prefix are wrappers for library functions. They either |
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5 * succeed or kill the program with an error message, but never return failure. |
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6 * They usually have the same arguments and return value as the function they |
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7 * wrap. |
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8 * |
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9 * Copyright 2006 Rob Landley <rob@landley.net> |
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10 */ |
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11 |
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12 #include "toys.h" |
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13 |
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14 // Strcpy with size checking: exit if there's not enough space for the string. |
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15 void xstrcpy(char *dest, char *src, size_t size) |
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16 { |
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17 if (strlen(src)+1 > size) error_exit("xstrcpy"); |
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18 strcpy(dest, src); |
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19 } |
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20 |
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21 void verror_msg(char *msg, int err, va_list va) |
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22 { |
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23 char *s = ": %s"; |
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24 |
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25 fprintf(stderr, "%s: ", toys.which->name); |
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26 if (msg) vfprintf(stderr, msg, va); |
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27 else s+=2; |
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28 if (err) fprintf(stderr, s, strerror(err)); |
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29 putc('\n', stderr); |
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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 exit(!toys.exitval ? 1 : toys.exitval); |
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66 } |
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67 |
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68 |
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69 // Die with an error message and strerror(errno) |
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70 void perror_exit(char *msg, ...) |
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71 { |
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72 va_list va; |
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73 |
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74 va_start(va, msg); |
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75 verror_msg(msg, errno, va); |
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76 va_end(va); |
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77 |
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78 exit(!toys.exitval ? 1 : toys.exitval); |
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79 } |
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80 |
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81 // Die unless we can allocate memory. |
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82 void *xmalloc(size_t size) |
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83 { |
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84 void *ret = malloc(size); |
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85 if (!ret) error_exit("xmalloc"); |
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86 |
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87 return ret; |
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88 } |
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89 |
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90 // Die unless we can allocate prezeroed memory. |
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91 void *xzalloc(size_t size) |
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92 { |
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93 void *ret = xmalloc(size); |
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94 memset(ret, 0, size); |
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95 return ret; |
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96 } |
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97 |
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98 // Die unless we can change the size of an existing allocation, possibly |
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99 // moving it. (Notice different arguments from libc function.) |
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100 void *xrealloc(void *ptr, size_t size) |
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101 { |
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102 ptr = realloc(ptr, size); |
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103 if (!ptr) error_exit("xrealloc"); |
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104 |
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105 return ptr; |
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106 } |
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107 |
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108 // Die unless we can allocate a copy of this many bytes of string. |
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109 char *xstrndup(char *s, size_t n) |
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110 { |
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111 char *ret = xmalloc(++n); |
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112 strncpy(ret, s, n); |
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113 ret[--n]=0; |
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114 |
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115 return ret; |
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116 } |
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117 |
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118 // Die unless we can allocate a copy of this string. |
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119 char *xstrdup(char *s) |
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120 { |
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121 return xstrndup(s, strlen(s)); |
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122 } |
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123 |
4
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124 // Die unless we can allocate enough space to sprintf() into. |
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125 char *xmsprintf(char *format, ...) |
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126 { |
126
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127 va_list va, va2; |
4
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128 int len; |
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129 char *ret; |
156
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130 |
126
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131 va_start(va, format); |
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132 va_copy(va2, va); |
4
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133 |
126
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134 // How long is it? |
4
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135 len = vsnprintf(0, 0, format, va); |
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136 len++; |
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137 va_end(va); |
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138 |
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139 // Allocate and do the sprintf() |
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140 ret = xmalloc(len); |
156
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141 vsnprintf(ret, len, format, va2); |
126
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142 va_end(va2); |
4
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143 |
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144 return ret; |
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145 } |
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146 |
70
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147 void xprintf(char *format, ...) |
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148 { |
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149 va_list va; |
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150 va_start(va, format); |
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151 |
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152 vprintf(format, va); |
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153 if (ferror(stdout)) perror_exit("write"); |
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154 } |
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155 |
128
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156 void xputs(char *s) |
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157 { |
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158 if (EOF == puts(s)) perror_exit("write"); |
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159 } |
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160 |
70
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161 void xputc(char c) |
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162 { |
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|
163 if (EOF == fputc(c, stdout)) perror_exit("write"); |
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|
164 } |
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|
165 |
a1b464bbef08
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|
166 void xflush(void) |
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|
167 { |
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|
168 if (fflush(stdout)) perror_exit("write");; |
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|
169 } |
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|
170 |
3
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Next drop of toysh, plus more infratructure.
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171 // Die unless we can exec argv[] (or run builtin command). Note that anything |
266a462ed18c
Next drop of toysh, plus more infratructure.
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172 // with a path isn't a builtin, so /bin/sh won't match the builtin sh. |
7
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
173 void xexec(char **argv) |
2
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
174 { |
3
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Next drop of toysh, plus more infratructure.
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|
175 toy_exec(argv); |
2
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|
176 execvp(argv[0], argv); |
419
af0cca0aba9d
Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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|
177 |
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Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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|
178 perror_exit("exec %s", argv[0]); |
2
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|
179 } |
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|
180 |
51 | 181 void xaccess(char *path, int flags) |
182 { | |
251
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Remove extra newlines on error_paths
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250
diff
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|
183 if (access(path, flags)) perror_exit("Can't access '%s'", path); |
51 | 184 } |
185 | |
214
98820d1eaa79
Upgrade patch to understand creating and deleting files.
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209
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|
186 // Die unless we can delete a file. (File must exist to be deleted.) |
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Upgrade patch to understand creating and deleting files.
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209
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|
187 void xunlink(char *path) |
98820d1eaa79
Upgrade patch to understand creating and deleting files.
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209
diff
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|
188 { |
98820d1eaa79
Upgrade patch to understand creating and deleting files.
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209
diff
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|
189 if (unlink(path)) perror_exit("unlink '%s'", path); |
98820d1eaa79
Upgrade patch to understand creating and deleting files.
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209
diff
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|
190 } |
98820d1eaa79
Upgrade patch to understand creating and deleting files.
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209
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|
191 |
2
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|
192 // Die unless we can open/create a file, returning file descriptor. |
49
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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|
193 int xcreate(char *path, int flags, int mode) |
2
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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|
194 { |
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
195 int fd = open(path, flags, mode); |
148
88dd003ccdf4
xcreate(): perror already prints error name and newline, remove redundancy.
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144
diff
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|
196 if (fd == -1) perror_exit("%s", path); |
2
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
197 return fd; |
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
198 } |
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
199 |
49
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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44
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|
200 // Die unless we can open a file, returning file descriptor. |
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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44
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|
201 int xopen(char *path, int flags) |
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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44
diff
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|
202 { |
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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parents:
44
diff
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|
203 return xcreate(path, flags, 0); |
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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44
diff
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|
204 } |
bb4c38853a7d
xopen() wants 2 arguments unless you're creating a file, in which case you
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44
diff
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|
205 |
201
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
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parents:
197
diff
changeset
|
206 void xclose(int fd) |
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
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197
diff
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|
207 { |
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
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197
diff
changeset
|
208 if (close(fd)) perror_exit("xclose"); |
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
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197
diff
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|
209 } |
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
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197
diff
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|
210 |
2
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Infrastructure, first drop of toy shell, and a bit of work on df.
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|
211 // Die unless we can open/create a file, returning FILE *. |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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|
212 FILE *xfopen(char *path, char *mode) |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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|
213 { |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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parents:
diff
changeset
|
214 FILE *f = fopen(path, mode); |
251
d9ddba2c7acf
Remove extra newlines on error_paths
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250
diff
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|
215 if (!f) perror_exit("No file %s", path); |
2
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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|
216 return f; |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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parents:
diff
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|
217 } |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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diff
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|
218 |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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diff
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|
219 // Keep reading until full or EOF |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
220 ssize_t readall(int fd, void *buf, size_t len) |
50
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
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49
diff
changeset
|
221 { |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
222 size_t count = 0; |
309
79a61cd58596
Bug spotted by Roberto Foglietta: at EOF readall() should return count, not len.
Rob Landley <rob@landley.net>
parents:
308
diff
changeset
|
223 |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
224 while (count<len) { |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
225 int i = read(fd, buf+count, len-count); |
309
79a61cd58596
Bug spotted by Roberto Foglietta: at EOF readall() should return count, not len.
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308
diff
changeset
|
226 if (!i) break; |
8
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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diff
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|
227 if (i<0) return i; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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diff
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|
228 count += i; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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7
diff
changeset
|
229 } |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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7
diff
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|
230 |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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7
diff
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|
231 return count; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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7
diff
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|
232 } |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
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diff
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|
233 |
50
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
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49
diff
changeset
|
234 // Keep writing until done or EOF |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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diff
changeset
|
235 ssize_t writeall(int fd, void *buf, size_t len) |
50
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
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49
diff
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|
236 { |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
237 size_t count = 0; |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
238 while (count<len) { |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
239 int i = write(fd, buf+count, len-count); |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
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parents:
53
diff
changeset
|
240 if (i<1) return i; |
50
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents:
49
diff
changeset
|
241 count += i; |
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
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49
diff
changeset
|
242 } |
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
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49
diff
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|
243 |
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents:
49
diff
changeset
|
244 return count; |
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents:
49
diff
changeset
|
245 } |
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
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49
diff
changeset
|
246 |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
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247 // Die if there's an error other than EOF. |
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248 size_t xread(int fd, void *buf, size_t len) |
8
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249 { |
399
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250 ssize_t ret = read(fd, buf, len); |
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251 if (ret < 0) perror_exit("xread"); |
53
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252 |
399
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253 return ret; |
53
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254 } |
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255 |
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256 void xreadall(int fd, void *buf, size_t len) |
53
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257 { |
63
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258 if (len != readall(fd, buf, len)) perror_exit("xreadall"); |
53
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259 } |
4
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260 |
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261 // There's no xwriteall(), just xwrite(). When we read, there may or may not |
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262 // be more data waiting. When we write, there is data and it had better go |
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263 // somewhere. |
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264 |
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265 void xwrite(int fd, void *buf, size_t len) |
50
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266 { |
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267 if (len != writeall(fd, buf, len)) perror_exit("xwrite"); |
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268 } |
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269 |
340 | 270 // Die if lseek fails, probably due to being called on a pipe. |
271 | |
272 off_t xlseek(int fd, off_t offset, int whence) | |
273 { | |
274 offset = lseek(fd, offset, whence); | |
275 if (offset<0) perror_exit("lseek"); | |
276 | |
277 return offset; | |
278 } | |
279 | |
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280 char *xgetcwd(void) |
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281 { |
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282 char *buf = getcwd(NULL, 0); |
70
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283 if (!buf) perror_exit("xgetcwd"); |
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284 |
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285 return buf; |
4
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286 } |
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287 |
95
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288 void xstat(char *path, struct stat *st) |
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289 { |
252
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290 if(stat(path, st)) perror_exit("Can't stat %s", path); |
95
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291 } |
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292 |
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293 // Cannonicalizes path by removing ".", "..", and "//" elements. This is not |
44 | 294 // the same as realpath(), where "dir/.." could wind up somewhere else by |
295 // following symlinks. | |
16
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296 char *xabspath(char *path) |
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297 { |
16
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298 char *from, *to; |
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299 |
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300 // If this isn't an absolute path, make it one with cwd. |
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301 if (path[0]!='/') { |
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302 char *cwd=xgetcwd(); |
252
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303 path = xmsprintf("%s/%s", cwd, path); |
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304 free(cwd); |
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305 } else path = xstrdup(path); |
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306 |
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307 // Loop through path elements |
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308 from = to = path; |
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309 while (*from) { |
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310 |
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311 // Continue any current path component. |
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312 if (*from!='/') { |
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313 *(to++) = *(from++); |
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314 continue; |
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315 } |
4
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316 |
16
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317 // Skip duplicate slashes. |
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318 while (*from=='/') from++; |
156
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319 |
16
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320 // Start of a new filename. Handle . and .. |
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321 while (*from=='.') { |
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322 // Skip . |
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323 if (from[1]=='/') from += 2; |
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324 else if (!from[1]) from++; |
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325 // Back up for .. |
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326 else if (from[1]=='.') { |
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327 if (from[2]=='/') from +=3; |
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328 else if(!from[2]) from+=2; |
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329 else break; |
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330 while (to>path && *(--to)!='/'); |
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331 } else break; |
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332 } |
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333 // Add directory separator slash. |
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334 *(to++) = '/'; |
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335 } |
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336 *to = 0; |
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337 |
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338 return path; |
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339 } |
4
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340 |
292
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Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
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341 void xchdir(char *path) |
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342 { |
344 | 343 if (chdir(path)) error_exit("chdir '%s'", path); |
292
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344 } |
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345 |
216
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346 // Ensure entire path exists. |
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347 // If mode != -1 set permissions on newly created dirs. |
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348 // Requires that path string be writable (for temporary null terminators). |
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349 void xmkpath(char *path, int mode) |
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350 { |
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351 char *p, old; |
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352 mode_t mask; |
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353 int rc; |
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354 struct stat st; |
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355 |
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356 for (p = path; ; p++) { |
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357 if (!*p || *p == '/') { |
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358 old = *p; |
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359 *p = rc = 0; |
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360 if (stat(path, &st) || !S_ISDIR(st.st_mode)) { |
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361 if (mode != -1) { |
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362 mask=umask(0); |
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363 rc = mkdir(path, mode); |
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364 umask(mask); |
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365 } else rc = mkdir(path, 0777); |
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366 } |
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367 *p = old; |
252
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368 if(rc) perror_exit("mkpath '%s'", path); |
216
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369 } |
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370 if (!*p) break; |
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371 } |
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372 } |
370 | 373 |
374 // setuid() can fail (for example, too many processes belonging to that user), | |
375 // which opens a security hole if the process continues as the original user. | |
376 | |
377 void xsetuid(uid_t uid) | |
378 { | |
379 if (setuid(uid)) perror_exit("xsetuid"); | |
380 } | |
381 | |
382 | |
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383 // Find all file in a colon-separated path with access type "type" (generally |
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384 // X_OK or R_OK). Returns a list of absolute paths to each file found, in |
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385 // order. |
16
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386 |
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387 struct string_list *find_in_path(char *path, char *filename) |
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388 { |
295
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389 struct string_list *rlist = NULL, **prlist=&rlist; |
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390 char *cwd = xgetcwd(); |
16
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391 |
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392 for (;;) { |
535
d51be130fda2
More stabs at getting #includes right, and moving off of deprecated functions.
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393 char *next = path ? strchr(path, ':') : NULL; |
16
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394 int len = next ? next-path : strlen(path); |
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395 struct string_list *rnext; |
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396 struct stat st; |
16
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397 |
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398 rnext = xmalloc(sizeof(void *) + strlen(filename) |
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399 + (len ? len : strlen(cwd)) + 2); |
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400 if (!len) sprintf(rnext->str, "%s/%s", cwd, filename); |
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401 else { |
20
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402 char *res = rnext->str; |
16
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403 strncpy(res, path, len); |
20
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404 res += len; |
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405 *(res++) = '/'; |
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406 strcpy(res, filename); |
16
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407 } |
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408 |
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409 // Confirm it's not a directory. |
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410 if (!stat(rnext->str, &st) && S_ISREG(st.st_mode)) { |
295
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411 *prlist = rnext; |
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412 rnext->next = NULL; |
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413 prlist = &(rnext->next); |
20
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414 } else free(rnext); |
16
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415 |
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416 if (!next) break; |
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417 path += len; |
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418 path++; |
4
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419 } |
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420 free(cwd); |
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421 |
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422 return rlist; |
4
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423 } |
7
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424 |
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425 // Convert unsigned int to ascii, writing into supplied buffer. A truncated |
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426 // result contains the first few digits of the result ala strncpy, and is |
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427 // always null terminated (unless buflen is 0). |
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428 void utoa_to_buf(unsigned n, char *buf, unsigned buflen) |
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429 { |
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430 int i, out = 0; |
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431 |
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432 if (buflen) { |
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433 for (i=1000000000; i; i/=10) { |
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434 int res = n/i; |
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435 |
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436 if ((res || out || i == 1) && --buflen>0) { |
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437 out++; |
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438 n -= res*i; |
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439 *buf++ = '0' + res; |
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440 } |
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441 } |
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442 *buf = 0; |
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443 } |
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444 } |
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445 |
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446 // Convert signed integer to ascii, using utoa_to_buf() |
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447 void itoa_to_buf(int n, char *buf, unsigned buflen) |
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448 { |
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449 if (buflen && n<0) { |
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450 n = -n; |
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451 *buf++ = '-'; |
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452 buflen--; |
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453 } |
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454 utoa_to_buf((unsigned)n, buf, buflen); |
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455 } |
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456 |
fc9c0503d5e2
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457 // This static buffer is used by both utoa() and itoa(), calling either one a |
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458 // second time will overwrite the previous results. |
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459 // |
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460 // The longest 32 bit integer is -2 billion plus a null terminator: 12 bytes. |
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461 // Note that int is always 32 bits on any remotely unix-like system, see |
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462 // http://www.unix.org/whitepapers/64bit.html for details. |
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463 |
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464 static char itoa_buf[12]; |
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465 |
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466 // Convert unsigned integer to ascii, returning a static buffer. |
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467 char *utoa(unsigned n) |
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468 { |
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469 utoa_to_buf(n, itoa_buf, sizeof(itoa_buf)); |
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470 |
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471 return itoa_buf; |
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472 } |
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473 |
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474 char *itoa(int n) |
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475 { |
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476 itoa_to_buf(n, itoa_buf, sizeof(itoa_buf)); |
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477 |
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478 return itoa_buf; |
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479 } |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
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480 |
102
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
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481 // atol() with the kilo/mega/giga/tera/peta/exa extensions. |
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482 // (zetta and yotta don't fit in 64 bits.) |
443
41b5ac08208f
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483 long atolx(char *numstr) |
102
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484 { |
443
41b5ac08208f
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485 char *c, *suffixes="kmgtpe", *end; |
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486 long val = strtol(numstr, &c, 0); |
102
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487 |
149
58554af48c8b
Fix from Charlie Shepherd: at end of string, don't match the null terminator
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488 if (*c) { |
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489 end = strchr(suffixes, tolower(*c)); |
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490 if (end) val *= 1024L<<((end-suffixes)*10); |
443
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491 else { |
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492 while (isspace(*c)) c++; |
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493 if (*c) error_exit("not integer: %s", numstr); |
41b5ac08208f
Make atolx() error_exit() if fed a string that doesn't convert entirely into an integer.
Rob Landley <rob@landley.net>
parents:
419
diff
changeset
|
494 } |
149
58554af48c8b
Fix from Charlie Shepherd: at end of string, don't match the null terminator
Rob Landley <rob@landley.net>
parents:
148
diff
changeset
|
495 } |
397
b7afbc6b753a
Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents:
379
diff
changeset
|
496 |
102
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
497 return val; |
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
498 } |
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
499 |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
500 // Return how long the file at fd is, if there's any way to determine it. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
501 off_t fdlength(int fd) |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
502 { |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
503 off_t bottom = 0, top = 0, pos, old; |
75
89ca591a9236
More random progress on mke2fs. Nothing to see yet.
Rob Landley <rob@landley.net>
parents:
70
diff
changeset
|
504 int size; |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
505 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
506 // If the ioctl works for this, return it. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
507 |
75
89ca591a9236
More random progress on mke2fs. Nothing to see yet.
Rob Landley <rob@landley.net>
parents:
70
diff
changeset
|
508 if (ioctl(fd, BLKGETSIZE, &size) >= 0) return size*512L; |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
509 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
510 // If not, do a binary search for the last location we can read. (Some |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
511 // block devices don't do BLKGETSIZE right.) This should probably have |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
512 // a CONFIG option... |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
513 |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
514 old = lseek(fd, 0, SEEK_CUR); |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
515 do { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
516 char temp; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
517 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
518 pos = bottom + (top - bottom) / 2; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
519 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
520 // If we can read from the current location, it's bigger. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
521 |
77
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
522 if (lseek(fd, pos, 0)>=0 && read(fd, &temp, 1)==1) { |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
523 if (bottom == top) bottom = top = (top+1) * 2; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
524 else bottom = pos; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
525 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
526 // If we can't, it's smaller. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
527 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
528 } else { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
529 if (bottom == top) { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
530 if (!top) return 0; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
531 bottom = top/2; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
532 } else top = pos; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
533 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
534 } while (bottom + 1 != top); |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
535 |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
536 lseek(fd, old, SEEK_SET); |
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
537 |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
538 return pos + 1; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
539 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
540 |
115
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
541 // This can return null (meaning file not found). It just won't return null |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
542 // for memory allocation reasons. |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
543 char *xreadlink(char *name) |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
544 { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
545 int len, size = 0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
546 char *buf = 0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
547 |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
548 // Grow by 64 byte chunks until it's big enough. |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
549 for(;;) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
550 size +=64; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
551 buf = xrealloc(buf, size); |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
552 len = readlink(name, buf, size); |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
553 |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
554 if (len<0) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
555 free(buf); |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
556 return 0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
557 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
558 if (len<size) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
559 buf[len]=0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
560 return buf; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
561 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
562 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
563 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
564 |
77
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
565 /* |
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
566 This might be of use or might not. Unknown yet... |
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
567 |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
568 // Read contents of file as a single freshly allocated nul-terminated string. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
569 char *readfile(char *name) |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
570 { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
571 off_t len; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
572 int fd; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
573 char *buf; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
574 |
156
1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents:
153
diff
changeset
|
575 fd = open(name, O_RDONLY); |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
576 if (fd == -1) return 0; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
577 len = fdlength(fd); |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
578 buf = xmalloc(len+1); |
379
74526fc22c25
xreadall() returns void... how does that even compile?
Rob Landley <rob@landley.net>
parents:
370
diff
changeset
|
579 buf[readall(fd, buf, len)] = 0; |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
580 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
581 return buf; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
582 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
583 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
584 char *xreadfile(char *name) |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
585 { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
586 char *buf = readfile(name); |
70
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents:
63
diff
changeset
|
587 if (!buf) perror_exit("xreadfile %s", name); |
53
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
588 return buf; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
589 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
590 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
591 */ |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
592 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
593 // Open a /var/run/NAME.pid file, dying if we can't write it or if it currently |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
594 // exists and is this executable. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
595 void xpidfile(char *name) |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
596 { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
597 char pidfile[256], spid[32]; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
598 int i, fd; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
599 pid_t pid; |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
600 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
601 sprintf(pidfile, "/var/run/%s.pid", name); |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
602 // Try three times to open the sucker. |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
603 for (i=0; i<3; i++) { |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
604 fd = open(pidfile, O_CREAT|O_EXCL, 0644); |
41d55b5d49fd
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605 if (fd != -1) break; |
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606 |
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607 // If it already existed, read it. Loop for race condition. |
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608 fd = open(pidfile, O_RDONLY); |
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609 if (fd == -1) continue; |
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610 |
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611 // Is the old program still there? |
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612 spid[xread(fd, spid, sizeof(spid)-1)] = 0; |
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613 close(fd); |
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614 pid = atoi(spid); |
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615 if (fd < 1 || kill(pid, 0) == ESRCH) unlink(pidfile); |
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616 |
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617 // An else with more sanity checking might be nice here. |
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618 } |
156
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619 |
53
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620 if (i == 3) error_exit("xpidfile %s", name); |
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621 |
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622 xwrite(fd, spid, sprintf(spid, "%ld\n", (long)getpid())); |
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623 close(fd); |
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624 } |
185
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625 |
308 | 626 // Iterate through an array of files, opening each one and calling a function |
627 // on that filehandle and name. The special filename "-" means stdin if | |
628 // flags is O_RDONLY, stdout otherwise. An empty argument list calls | |
629 // function() on just stdin/stdout. | |
630 // | |
631 // Note: read only filehandles are automatically closed when function() | |
632 // returns, but writeable filehandles must be close by function() | |
397
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633 void loopfiles_rw(char **argv, int flags, int permissions, int failok, |
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634 void (*function)(int fd, char *name)) |
185
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635 { |
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636 int fd; |
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637 |
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638 // If no arguments, read from stdin. |
308 | 639 if (!*argv) function(flags ? 1 : 0, "-"); |
185
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640 else do { |
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641 // Filename "-" means read from stdin. |
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642 // Inability to open a file prints a warning, but doesn't exit. |
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643 |
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644 if (!strcmp(*argv,"-")) fd=0; |
397
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645 else if (0>(fd = open(*argv, flags, permissions)) && !failok) { |
252
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646 perror_msg("%s", *argv); |
185
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647 toys.exitval = 1; |
220
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648 continue; |
185
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649 } |
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650 function(fd, *argv); |
308 | 651 if (!flags) close(fd); |
185
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652 } while (*++argv); |
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653 } |
201
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654 |
397
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655 // Call loopfiles_rw with O_RDONLY and !failok (common case). |
308 | 656 void loopfiles(char **argv, void (*function)(int fd, char *name)) |
657 { | |
397
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658 loopfiles_rw(argv, O_RDONLY, 0, 0, function); |
308 | 659 } |
660 | |
201
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661 // Slow, but small. |
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662 |
284
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663 char *get_rawline(int fd, long *plen, char end) |
201
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664 { |
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665 char c, *buf = NULL; |
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666 long len = 0; |
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667 |
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668 for (;;) { |
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669 if (1>read(fd, &c, 1)) break; |
354
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670 if (!(len & 63)) buf=xrealloc(buf, len+65); |
284
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671 if ((buf[len++]=c) == end) break; |
201
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672 } |
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673 if (buf) buf[len]=0; |
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674 if (plen) *plen = len; |
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675 |
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676 return buf; |
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677 } |
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678 |
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679 char *get_line(int fd) |
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680 { |
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681 long len; |
284
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682 char *buf = get_rawline(fd, &len, '\n'); |
201
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683 |
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684 if (buf && buf[--len]=='\n') buf[len]=0; |
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685 |
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686 return buf; |
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|
687 } |
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688 |
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689 // Copy the rest of in to out and close both files. |
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690 |
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691 void xsendfile(int in, int out) |
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692 { |
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693 long len; |
209 | 694 char buf[4096]; |
201
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695 |
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|
696 if (in<0) return; |
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|
697 for (;;) { |
209 | 698 len = xread(in, buf, 4096); |
201
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699 if (len<1) break; |
209 | 700 xwrite(out, buf, len); |
201
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|
701 } |
209 | 702 } |
703 | |
704 // Open a temporary file to copy an existing file into. | |
705 int copy_tempfile(int fdin, char *name, char **tempname) | |
706 { | |
707 struct stat statbuf; | |
708 int fd; | |
709 | |
710 *tempname = xstrndup(name, strlen(name)+6); | |
711 strcat(*tempname,"XXXXXX"); | |
712 if(-1 == (fd = mkstemp(*tempname))) error_exit("no temp file"); | |
713 | |
714 // Set permissions of output file | |
715 | |
716 fstat(fdin, &statbuf); | |
717 fchmod(fd, statbuf.st_mode); | |
718 | |
719 return fd; | |
201
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720 } |
209 | 721 |
722 // Abort the copy and delete the temporary file. | |
723 void delete_tempfile(int fdin, int fdout, char **tempname) | |
724 { | |
725 close(fdin); | |
726 close(fdout); | |
727 unlink(*tempname); | |
728 free(*tempname); | |
729 *tempname = NULL; | |
730 } | |
731 | |
732 // Copy the rest of the data and replace the original with the copy. | |
733 void replace_tempfile(int fdin, int fdout, char **tempname) | |
734 { | |
735 char *temp = xstrdup(*tempname); | |
736 | |
737 temp[strlen(temp)-6]=0; | |
738 if (fdin != -1) { | |
739 xsendfile(fdin, fdout); | |
740 xclose(fdin); | |
741 } | |
742 xclose(fdout); | |
743 rename(*tempname, temp); | |
744 free(*tempname); | |
745 free(temp); | |
746 *tempname = NULL; | |
747 } | |
334
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748 |
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|
749 // Create a 256 entry CRC32 lookup table. |
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750 |
337
aaafa1ceaa91
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Rob Landley <rob@landley.net>
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|
751 void crc_init(unsigned int *crc_table, int little_endian) |
334
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752 { |
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|
753 unsigned int i; |
83c461db9df7
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754 |
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311
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|
755 // Init the CRC32 table (big endian) |
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756 for (i=0; i<256; i++) { |
337
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Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
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757 unsigned int j, c = little_endian ? i : i<<24; |
334
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parents:
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|
758 for (j=8; j; j--) |
337
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parents:
334
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|
759 if (little_endian) c = (c&1) ? (c>>1)^0xEDB88320 : c>>1; |
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Add -N, -I, -L, and -P options to cksum.
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334
diff
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|
760 else c=c&0x80000000 ? (c<<1)^0x04c11db7 : (c<<1); |
334
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|
761 crc_table[i] = c; |
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762 } |
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|
763 } |
419
af0cca0aba9d
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399
diff
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|
764 |
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Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
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parents:
399
diff
changeset
|
765 // Quick and dirty query size of terminal, doesn't do ANSI probe fallback. |
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Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
766 // set *x=0 and *y=0 before calling to detect failure to set either, or |
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
|
767 // x=80 y=25 to provide defaults |
af0cca0aba9d
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parents:
399
diff
changeset
|
768 |
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
|
769 void terminal_size(unsigned *x, unsigned *y) |
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Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents:
399
diff
changeset
|
770 { |
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
|
771 struct winsize ws; |
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
|
772 int i; |
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
|
773 |
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
|
774 //memset(&ws, 0, sizeof(ws)); |
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
|
775 for (i=0; i<3; i++) { |
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
|
776 if (ioctl(i, TIOCGWINSZ, &ws)) continue; |
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
|
777 if (x) *x = ws.ws_col; |
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
|
778 if (y) *y = ws.ws_row; |
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
|
779 } |
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
|
780 if (x) { |
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
|
781 char *s = getenv("COLUMNS"); |
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
|
782 |
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
|
783 i = s ? atoi(s) : 0; |
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
|
784 if (i>0) *x = i; |
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
|
785 } |
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
|
786 if (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
|
787 char *s = getenv("ROWS"); |
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
|
788 |
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
|
789 i = s ? atoi(s) : 0; |
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
|
790 if (i>0) *y = i; |
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
|
791 } |
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
|
792 } |
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
|
793 |
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
|
794 // This should use a raw tty, fixit later. |
503
3b9dea897dc0
Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents:
498
diff
changeset
|
795 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
|
796 { |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
797 FILE *fp = fopen("/dev/tty", "rw"); |
503
3b9dea897dc0
Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents:
498
diff
changeset
|
798 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
|
799 |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
800 if (!fp) return 1; |
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
|
801 |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
802 fprintf(fp, "%s (%c/%c):", prompt, def ? 'Y' : 'y', def ? 'n' : 'N'); |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
803 while (fread(&buf, 1, 1, fp)) { |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
804 if (tolower(buf) == 'y') def = 1; |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
805 if (tolower(buf) == 'n') def = 0; |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
806 else if (!isspace(buf)) continue; |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
807 |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
808 break; |
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
|
809 } |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
810 fclose(fp); |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
811 |
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
|
812 return def; |
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
|
813 } |
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
|
814 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
815 // Execute a callback for each PID that matches a process name from a list. |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
816 void for_each_pid_with_name_in(char **names, void (*callback)(pid_t pid)) |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
817 { |
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
|
818 DIR *dp; |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
819 struct dirent *entry; |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
820 char cmd[PATH_MAX], path[64]; |
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
|
821 char **curname; |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
822 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
823 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
|
824 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
825 while ((entry = readdir(dp))) { |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
826 int fd; |
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
|
827 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
828 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
|
829 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
830 if (sizeof(path) <= snprintf(path, sizeof(path), "/proc/%s/cmdline", |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
831 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
|
832 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
833 if (-1 != (fd=xopen(path, O_RDONLY))) { |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
834 int n = read(fd, cmd, sizeof(cmd)); |
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
|
835 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
836 close(fd); |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
837 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
|
838 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
839 for (curname = names; *curname; curname++) |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
840 if (!strcmp(basename(cmd), *curname)) |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
841 callback(atol(entry->d_name)); |
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
|
842 } |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
843 } |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
844 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
845 closedir(dp); |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
846 } |
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
|
847 |
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
|
848 struct signame { |
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
|
849 int num; |
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
|
850 char *name; |
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
|
851 }; |
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
|
852 |
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
|
853 // 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
|
854 // 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
|
855 |
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
|
856 #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
|
857 |
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
|
858 static struct signame signames[] = { |
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
|
859 SIGNIFY(ABRT), SIGNIFY(ALRM), SIGNIFY(BUS), SIGNIFY(CHLD), SIGNIFY(CONT), |
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
|
860 SIGNIFY(FPE), SIGNIFY(HUP), SIGNIFY(ILL), SIGNIFY(INT), SIGNIFY(KILL), |
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
|
861 SIGNIFY(PIPE), SIGNIFY(QUIT), SIGNIFY(SEGV), SIGNIFY(STOP), SIGNIFY(TERM), |
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
|
862 SIGNIFY(TSTP), SIGNIFY(TTIN), SIGNIFY(TTOU), SIGNIFY(USR1), SIGNIFY(USR2), |
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
|
863 SIGNIFY(SYS), SIGNIFY(TRAP), SIGNIFY(URG), SIGNIFY(VTALRM), SIGNIFY(XCPU), |
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
|
864 SIGNIFY(XFSZ) |
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
|
865 }; |
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
|
866 |
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
|
867 // 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
|
868 // 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
|
869 |
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
|
870 // 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
|
871 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
|
872 { |
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
|
873 int i; |
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
|
874 |
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
|
875 if (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
|
876 char *s; |
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
|
877 i = strtol(pidstr, &s, 10); |
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
|
878 if (!*s) return i; |
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
|
879 |
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
|
880 if (!strncasecmp(pidstr, "sig", 3)) pidstr+=3; |
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
|
881 } |
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
|
882 for (i = 0; i < sizeof(signames)/sizeof(struct signame); i++) |
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
|
883 if (!pidstr) xputs(signames[i].name); |
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
|
884 else if (!strcasecmp(pidstr, signames[i].name)) |
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
|
885 return signames[i].num; |
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
|
886 |
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
|
887 return -1; |
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
|
888 } |
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
|
889 |
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
|
890 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
|
891 { |
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
|
892 int i; |
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
|
893 |
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
|
894 for (i=0; i<sizeof(signames)/sizeof(struct signame); i++) |
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
|
895 if (signames[i].num == sig) return signames[i].name; |
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
|
896 return NULL; |
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
|
897 } |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
898 |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
899 |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
900 /* mode parsing */ |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
901 |
553 | 902 mode_t apply_mode(int who, int how, int what, mode_t base) |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
903 { |
553 | 904 mode_t new_mode = 0, tmp_mode = 0, tmp_mask = 0; |
905 | |
906 if (!who) tmp_mask = 07777; | |
907 if (who & 0x01) { // u | |
908 if (what & 0x01) tmp_mode |= S_IXUSR; | |
909 if (what & 0x02) tmp_mode |= S_IWUSR; | |
910 if (what & 0x04) tmp_mode |= S_IRUSR; | |
911 if (what & 0x08) tmp_mode |= S_ISUID; | |
912 tmp_mask |= S_IRWXU; | |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
913 } |
553 | 914 if (who & 0x02) { // g |
915 if (what & 0x01) tmp_mode |= S_IXGRP; | |
916 if (what & 0x02) tmp_mode |= S_IWUSR; | |
917 if (what & 0x04) tmp_mode |= S_IRUSR; | |
918 if (what & 0x08) tmp_mode |= S_ISGID; | |
919 tmp_mask |= S_IRWXG; | |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
920 } |
553 | 921 if (who & 0x04) { // o |
922 if (what & 0x01) tmp_mode |= S_IXOTH; | |
923 if (what & 0x02) tmp_mode |= S_IWOTH; | |
924 if (what & 0x04) tmp_mode |= S_IROTH; | |
925 tmp_mask |= S_IRWXO; | |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
926 } |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
927 /* check sticky */ |
553 | 928 if (what & 0x10) tmp_mode |= S_ISVTX; |
929 | |
930 if (how == 1) new_mode = tmp_mode | (base & tmp_mask); | |
931 else if (how == 2) new_mode = base | tmp_mode; | |
932 else if (how == 3) new_mode = base & ~(tmp_mode); | |
933 | |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
934 return new_mode; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
935 } |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
936 |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
937 |
553 | 938 mode_t string_to_mode(char *mode_str, mode_t base) |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
939 { |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
940 mode_t new_mode; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
941 int what = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
942 int who = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
943 int how = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
944 char *p; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
945 long tmp; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
946 if (!mode_str) |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
947 return base; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
948 if (isdigit(mode_str[0])) { |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
949 tmp = strtol(mode_str, &p, 8); |
553 | 950 if (*p || tmp < 0 || (tmp & ~(07777))) return base; |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
951 new_mode = (mode_t) tmp; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
952 return new_mode; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
953 } |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
954 new_mode = base; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
955 while (*mode_str) { |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
956 /* TODO: add support for permission copying */ |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
957 switch(*mode_str) { |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
958 case ',': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
959 /* next command */ |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
960 new_mode = apply_mode(who, how, what, new_mode); |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
961 who = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
962 how = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
963 what = 0; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
964 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
965 case 'a': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
966 who = 0x01 | 0x02 | 0x04; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
967 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
968 case 'u': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
969 who |= 0x01; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
970 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
971 case 'g': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
972 who |= 0x02; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
973 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
974 case 'o': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
975 who |= 0x04; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
976 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
977 case 'r': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
978 what |= 0x04; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
979 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
980 case 'w': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
981 what |= 0x02; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
982 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
983 case 'x': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
984 what |= 0x01; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
985 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
986 case 't': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
987 what |= 0x10; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
988 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
989 case 's': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
990 what |= 0x08; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
991 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
992 case '=': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
993 how = 1; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
994 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
995 case '+': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
996 how = 2; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
997 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
998 case '-': |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
999 how = 3; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1000 break; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1001 default: |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1002 /* error case */ |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1003 return base; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1004 } |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1005 mode_str++; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1006 } |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1007 new_mode = apply_mode(who, how, what, new_mode); |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1008 return new_mode; |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1009 } |