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annotate lib/lib.c @ 590:7becb497c3c4

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Update chmod to work with new dirtree, and fix bugs in string_to_mode().
author Rob Landley <rob@landley.net>
date Sun, 03 Jun 2012 00:32:12 -0500
parents 1dcd7994abea
children be4b2d3796eb
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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
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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 {
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127 va_list va, va2;
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128 int len;
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129 char *ret;
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130
126
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131 va_start(va, format);
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132 va_copy(va2, va);
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133
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134 // How long is it?
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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);
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141 vsnprintf(ret, len, format, va2);
126
7b22987a7b47 Vladimir Oleynik pointed out that va_start() twice in the same function
Rob Landley <rob@landley.net>
parents: 124
diff changeset
142 va_end(va2);
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
143
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
144 return ret;
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
145 }
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
146
70
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
147 void xprintf(char *format, ...)
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
148 {
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
149 va_list va;
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
150 va_start(va, format);
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
151
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
152 vprintf(format, va);
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
153 if (ferror(stdout)) perror_exit("write");
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
154 }
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
155
128
0a90a5fbc1bf Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
parents: 126
diff changeset
156 void xputs(char *s)
0a90a5fbc1bf Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
parents: 126
diff changeset
157 {
0a90a5fbc1bf Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
parents: 126
diff changeset
158 if (EOF == puts(s)) perror_exit("write");
0a90a5fbc1bf Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
parents: 126
diff changeset
159 }
0a90a5fbc1bf Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
parents: 126
diff changeset
160
70
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
161 void xputc(char c)
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
162 {
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
163 if (EOF == fputc(c, stdout)) perror_exit("write");
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
164 }
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
165
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
166 void xflush(void)
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
167 {
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
168 if (fflush(stdout)) perror_exit("write");;
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
169 }
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
170
3
266a462ed18c Next drop of toysh, plus more infratructure.
landley@driftwood
parents: 2
diff changeset
171 // Die unless we can exec argv[] (or run builtin command). Note that anything
266a462ed18c Next drop of toysh, plus more infratructure.
landley@driftwood
parents: 2
diff changeset
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.
landley@driftwood
parents: 4
diff changeset
173 void xexec(char **argv)
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
174 {
3
266a462ed18c Next drop of toysh, plus more infratructure.
landley@driftwood
parents: 2
diff changeset
175 toy_exec(argv);
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
176 execvp(argv[0], argv);
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
177
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
178 perror_exit("exec %s", argv[0]);
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
179 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
180
51
63edd4de94dd Add xaccess()
Rob Landley <rob@landley.net>
parents: 50
diff changeset
181 void xaccess(char *path, int flags)
63edd4de94dd Add xaccess()
Rob Landley <rob@landley.net>
parents: 50
diff changeset
182 {
251
d9ddba2c7acf Remove extra newlines on error_paths
Charlie Shepherd <masterdriverz@gentoo.org>
parents: 250
diff changeset
183 if (access(path, flags)) perror_exit("Can't access '%s'", path);
51
63edd4de94dd Add xaccess()
Rob Landley <rob@landley.net>
parents: 50
diff changeset
184 }
63edd4de94dd Add xaccess()
Rob Landley <rob@landley.net>
parents: 50
diff changeset
185
214
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
186 // Die unless we can delete a file. (File must exist to be deleted.)
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
187 void xunlink(char *path)
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
188 {
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
189 if (unlink(path)) perror_exit("unlink '%s'", path);
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
190 }
98820d1eaa79 Upgrade patch to understand creating and deleting files.
Rob Landley <rob@landley.net>
parents: 209
diff changeset
191
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
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
Rob Landley <rob@landley.net>
parents: 44
diff changeset
193 int xcreate(char *path, int flags, int mode)
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
194 {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
195 int fd = open(path, flags, mode);
148
88dd003ccdf4 xcreate(): perror already prints error name and newline, remove redundancy.
Rob Landley <rob@landley.net>
parents: 144
diff changeset
196 if (fd == -1) perror_exit("%s", path);
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
197 return fd;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
198 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
199
49
bb4c38853a7d xopen() wants 2 arguments unless you're creating a file, in which case you
Rob Landley <rob@landley.net>
parents: 44
diff changeset
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
Rob Landley <rob@landley.net>
parents: 44
diff changeset
201 int xopen(char *path, int flags)
bb4c38853a7d xopen() wants 2 arguments unless you're creating a file, in which case you
Rob Landley <rob@landley.net>
parents: 44
diff changeset
202 {
bb4c38853a7d xopen() wants 2 arguments unless you're creating a file, in which case you
Rob Landley <rob@landley.net>
parents: 44
diff changeset
203 return xcreate(path, flags, 0);
bb4c38853a7d xopen() wants 2 arguments unless you're creating a file, in which case you
Rob Landley <rob@landley.net>
parents: 44
diff changeset
204 }
bb4c38853a7d xopen() wants 2 arguments unless you're creating a file, in which case you
Rob Landley <rob@landley.net>
parents: 44
diff changeset
205
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
206 void xclose(int fd)
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
207 {
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
208 if (close(fd)) perror_exit("xclose");
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
209 }
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
210
565
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
211 int xdup(int fd)
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
212 {
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
213 fd = dup(fd);
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
214 if (fd == -1) perror_exit("xdup");
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
215 return fd;
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
216 }
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
217
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
218 // Die unless we can open/create a file, returning FILE *.
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
219 FILE *xfopen(char *path, char *mode)
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
220 {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
221 FILE *f = fopen(path, mode);
251
d9ddba2c7acf Remove extra newlines on error_paths
Charlie Shepherd <masterdriverz@gentoo.org>
parents: 250
diff changeset
222 if (!f) perror_exit("No file %s", path);
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
223 return f;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
224 }
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
225
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
226 // Keep reading until full or EOF
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
227 ssize_t readall(int fd, void *buf, size_t len)
50
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
228 {
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
229 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
230
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
231 while (count<len) {
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
232 int i = read(fd, buf+count, len-count);
309
79a61cd58596 Bug spotted by Roberto Foglietta: at EOF readall() should return count, not len.
Rob Landley <rob@landley.net>
parents: 308
diff changeset
233 if (!i) break;
8
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
234 if (i<0) return i;
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
235 count += i;
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
236 }
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
237
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
238 return count;
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
239 }
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
240
50
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
241 // Keep writing until done or EOF
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
242 ssize_t writeall(int fd, void *buf, size_t len)
50
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
243 {
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
244 size_t count = 0;
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
245 while (count<len) {
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
246 int i = write(fd, buf+count, len-count);
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
247 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
248 count += i;
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
249 }
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
250
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
251 return count;
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
252 }
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
253
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
254 // Die if there's an error other than EOF.
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
255 size_t xread(int fd, void *buf, size_t len)
8
04f66da2bdbf Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents: 7
diff changeset
256 {
399
7a5b70965e0e Bugfix (spotted by Nathan McSween): xread can't detect <0 if the return type is stored in an unsigned variable.
Rob Landley <rob@landley.net>
parents: 397
diff changeset
257 ssize_t ret = read(fd, buf, len);
7a5b70965e0e Bugfix (spotted by Nathan McSween): xread can't detect <0 if the return type is stored in an unsigned variable.
Rob Landley <rob@landley.net>
parents: 397
diff changeset
258 if (ret < 0) perror_exit("xread");
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
259
399
7a5b70965e0e Bugfix (spotted by Nathan McSween): xread can't detect <0 if the return type is stored in an unsigned variable.
Rob Landley <rob@landley.net>
parents: 397
diff changeset
260 return ret;
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
261 }
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
262
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
263 void xreadall(int fd, void *buf, size_t len)
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
264 {
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
265 if (len != readall(fd, buf, len)) perror_exit("xreadall");
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
266 }
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
267
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
268 // There's no xwriteall(), just xwrite(). When we read, there may or may not
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
269 // be more data waiting. When we write, there is data and it had better go
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
270 // somewhere.
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
271
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
272 void xwrite(int fd, void *buf, size_t len)
50
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
273 {
63
69efffcacd70 Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents: 53
diff changeset
274 if (len != writeall(fd, buf, len)) perror_exit("xwrite");
50
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
275 }
63c168b65fa6 Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents: 49
diff changeset
276
340
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
277 // Die if lseek fails, probably due to being called on a pipe.
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
278
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
279 off_t xlseek(int fd, off_t offset, int whence)
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
280 {
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
281 offset = lseek(fd, offset, whence);
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
282 if (offset<0) perror_exit("lseek");
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
283
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
284 return offset;
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
285 }
6e03d6a8df23 Add mkswap.
Rob Landley <rob@landley.net>
parents: 337
diff changeset
286
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
287 char *xgetcwd(void)
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
288 {
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
289 char *buf = getcwd(NULL, 0);
70
a1b464bbef08 Add "echo". Has -n and -e (but not \0123 yet).
Rob Landley <rob@landley.net>
parents: 63
diff changeset
290 if (!buf) perror_exit("xgetcwd");
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
291
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
292 return buf;
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
293 }
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
294
95
a636e4d20f13 Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents: 77
diff changeset
295 void xstat(char *path, struct stat *st)
a636e4d20f13 Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents: 77
diff changeset
296 {
252
8d751063a563 Add spaces after some commas (from Charlie Shepherd).
Rob Landley <rob@landley.net>
parents: 251
diff changeset
297 if(stat(path, st)) perror_exit("Can't stat %s", path);
95
a636e4d20f13 Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents: 77
diff changeset
298 }
a636e4d20f13 Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents: 77
diff changeset
299
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
300 // Cannonicalizes path by removing ".", "..", and "//" elements. This is not
44
e74aa8b8660a Comment tweak.
Rob Landley <rob@landley.net>
parents: 20
diff changeset
301 // the same as realpath(), where "dir/.." could wind up somewhere else by
e74aa8b8660a Comment tweak.
Rob Landley <rob@landley.net>
parents: 20
diff changeset
302 // following symlinks.
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
303 char *xabspath(char *path)
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
304 {
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
305 char *from, *to;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
306
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
307 // If this isn't an absolute path, make it one with cwd.
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
308 if (path[0]!='/') {
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
309 char *cwd=xgetcwd();
252
8d751063a563 Add spaces after some commas (from Charlie Shepherd).
Rob Landley <rob@landley.net>
parents: 251
diff changeset
310 path = xmsprintf("%s/%s", cwd, path);
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
311 free(cwd);
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
312 } else path = xstrdup(path);
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
313
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
314 // Loop through path elements
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
315 from = to = path;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
316 while (*from) {
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
317
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
318 // Continue any current path component.
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
319 if (*from!='/') {
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
320 *(to++) = *(from++);
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
321 continue;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
322 }
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
323
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
324 // Skip duplicate slashes.
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
325 while (*from=='/') from++;
156
1e8f4b05cb65 Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents: 153
diff changeset
326
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
327 // Start of a new filename. Handle . and ..
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
328 while (*from=='.') {
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
329 // Skip .
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
330 if (from[1]=='/') from += 2;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
331 else if (!from[1]) from++;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
332 // Back up for ..
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
333 else if (from[1]=='.') {
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
334 if (from[2]=='/') from +=3;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
335 else if(!from[2]) from+=2;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
336 else break;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
337 while (to>path && *(--to)!='/');
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
338 } else break;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
339 }
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
340 // Add directory separator slash.
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
341 *(to++) = '/';
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
342 }
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
343 *to = 0;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
344
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
345 return path;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
346 }
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
347
585
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
348 // Resolve all symlinks, returning malloc() memory.
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
349 char *xrealpath(char *path)
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
350 {
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
351 char *new = realpath(path, NULL);
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
352 if (!new) perror_exit("realpath '%s'", path);
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
353 return new;
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
354 }
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 578
diff changeset
355
292
b4077be6c746 Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
Rob Landley <rob@landley.net>
parents: 284
diff changeset
356 void xchdir(char *path)
b4077be6c746 Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
Rob Landley <rob@landley.net>
parents: 284
diff changeset
357 {
344
a0c3767f0a82 Fix thinko.
Rob Landley <rob@landley.net>
parents: 340
diff changeset
358 if (chdir(path)) error_exit("chdir '%s'", path);
292
b4077be6c746 Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
Rob Landley <rob@landley.net>
parents: 284
diff changeset
359 }
b4077be6c746 Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
Rob Landley <rob@landley.net>
parents: 284
diff changeset
360
216
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
361 // Ensure entire path exists.
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
362 // If mode != -1 set permissions on newly created dirs.
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
363 // Requires that path string be writable (for temporary null terminators).
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
364 void xmkpath(char *path, int mode)
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
365 {
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
366 char *p, old;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
367 mode_t mask;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
368 int rc;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
369 struct stat st;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
370
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
371 for (p = path; ; p++) {
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
372 if (!*p || *p == '/') {
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
373 old = *p;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
374 *p = rc = 0;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
375 if (stat(path, &st) || !S_ISDIR(st.st_mode)) {
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
376 if (mode != -1) {
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
377 mask=umask(0);
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
378 rc = mkdir(path, mode);
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
379 umask(mask);
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
380 } else rc = mkdir(path, 0777);
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
381 }
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
382 *p = old;
252
8d751063a563 Add spaces after some commas (from Charlie Shepherd).
Rob Landley <rob@landley.net>
parents: 251
diff changeset
383 if(rc) perror_exit("mkpath '%s'", path);
216
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
384 }
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
385 if (!*p) break;
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
386 }
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
387 }
370
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
388
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
389 // setuid() can fail (for example, too many processes belonging to that user),
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
390 // which opens a security hole if the process continues as the original user.
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
391
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
392 void xsetuid(uid_t uid)
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
393 {
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
394 if (setuid(uid)) perror_exit("xsetuid");
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
395 }
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
396
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
397
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
398 // Find all file in a colon-separated path with access type "type" (generally
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
399 // X_OK or R_OK). Returns a list of absolute paths to each file found, in
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
400 // order.
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
401
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
402 struct string_list *find_in_path(char *path, char *filename)
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
403 {
295
5a0faa267866 Fix which (the meaning of -a was reversed, and it was finding the _last_ hit).
Rob Landley <rob@landley.net>
parents: 292
diff changeset
404 struct string_list *rlist = NULL, **prlist=&rlist;
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
405 char *cwd = xgetcwd();
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
406
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
407 for (;;) {
535
d51be130fda2 More stabs at getting #includes right, and moving off of deprecated functions.
Rob Landley <rob@landley.net>
parents: 503
diff changeset
408 char *next = path ? strchr(path, ':') : NULL;
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
409 int len = next ? next-path : strlen(path);
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
410 struct string_list *rnext;
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
411 struct stat st;
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
412
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
413 rnext = xmalloc(sizeof(void *) + strlen(filename)
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
414 + (len ? len : strlen(cwd)) + 2);
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
415 if (!len) sprintf(rnext->str, "%s/%s", cwd, filename);
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
416 else {
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
417 char *res = rnext->str;
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
418 strncpy(res, path, len);
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
419 res += len;
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
420 *(res++) = '/';
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
421 strcpy(res, filename);
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
422 }
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
423
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
424 // Confirm it's not a directory.
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
425 if (!stat(rnext->str, &st) && S_ISREG(st.st_mode)) {
295
5a0faa267866 Fix which (the meaning of -a was reversed, and it was finding the _last_ hit).
Rob Landley <rob@landley.net>
parents: 292
diff changeset
426 *prlist = rnext;
5a0faa267866 Fix which (the meaning of -a was reversed, and it was finding the _last_ hit).
Rob Landley <rob@landley.net>
parents: 292
diff changeset
427 rnext->next = NULL;
5a0faa267866 Fix which (the meaning of -a was reversed, and it was finding the _last_ hit).
Rob Landley <rob@landley.net>
parents: 292
diff changeset
428 prlist = &(rnext->next);
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
429 } else free(rnext);
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
430
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
431 if (!next) break;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
432 path += len;
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
433 path++;
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
434 }
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
435 free(cwd);
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
436
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
437 return rlist;
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
438 }
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
439
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
440 // Convert unsigned int to ascii, writing into supplied buffer. A truncated
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
441 // result contains the first few digits of the result ala strncpy, and is
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
442 // always null terminated (unless buflen is 0).
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
443 void utoa_to_buf(unsigned n, char *buf, unsigned buflen)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
444 {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
445 int i, out = 0;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
446
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
447 if (buflen) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
448 for (i=1000000000; i; i/=10) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
449 int res = n/i;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
450
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
451 if ((res || out || i == 1) && --buflen>0) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
452 out++;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
453 n -= res*i;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
454 *buf++ = '0' + res;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
455 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
456 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
457 *buf = 0;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
458 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
459 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
460
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
461 // Convert signed integer to ascii, using utoa_to_buf()
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
462 void itoa_to_buf(int n, char *buf, unsigned buflen)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
463 {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
464 if (buflen && n<0) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
465 n = -n;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
466 *buf++ = '-';
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
467 buflen--;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
468 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
469 utoa_to_buf((unsigned)n, buf, buflen);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
470 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
471
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
472 // This static buffer is used by both utoa() and itoa(), calling either one a
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
473 // second time will overwrite the previous results.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
474 //
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
475 // The longest 32 bit integer is -2 billion plus a null terminator: 12 bytes.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
476 // Note that int is always 32 bits on any remotely unix-like system, see
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
477 // http://www.unix.org/whitepapers/64bit.html for details.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
478
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
479 static char itoa_buf[12];
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
480
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
481 // Convert unsigned integer to ascii, returning a static buffer.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
482 char *utoa(unsigned n)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
483 {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
484 utoa_to_buf(n, itoa_buf, sizeof(itoa_buf));
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
485
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
486 return itoa_buf;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
487 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
488
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
489 char *itoa(int n)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
490 {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
491 itoa_to_buf(n, itoa_buf, sizeof(itoa_buf));
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
492
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
493 return itoa_buf;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
494 }
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
495
102
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
496 // atol() with the kilo/mega/giga/tera/peta/exa extensions.
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
497 // (zetta and yotta don't fit in 64 bits.)
443
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
498 long atolx(char *numstr)
102
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
499 {
443
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
500 char *c, *suffixes="kmgtpe", *end;
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
501 long val = strtol(numstr, &c, 0);
102
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
502
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
503 if (*c) {
58554af48c8b Fix from Charlie Shepherd: at end of string, don't match the null terminator
Rob Landley <rob@landley.net>
parents: 148
diff changeset
504 end = strchr(suffixes, tolower(*c));
58554af48c8b Fix from Charlie Shepherd: at end of string, don't match the null terminator
Rob Landley <rob@landley.net>
parents: 148
diff changeset
505 if (end) val *= 1024L<<((end-suffixes)*10);
443
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
506 else {
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
507 while (isspace(*c)) c++;
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
508 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
509 }
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
510 }
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
511
102
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
512 return val;
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
513 }
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
514
565
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
515 int numlen(long l)
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
516 {
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
517 int len = 0;
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
518 while (l) {
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
519 l /= 10;
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
520 len++;
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
521 }
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
522 return len;
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
523 }
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 554
diff changeset
524
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
525 // 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
526 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
527 {
310
8b8116214b1c Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents: 309
diff changeset
528 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
529 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
530
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 // 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
532
75
89ca591a9236 More random progress on mke2fs. Nothing to see yet.
Rob Landley <rob@landley.net>
parents: 70
diff changeset
533 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
534
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 // 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
536 // 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
537 // 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
538
310
8b8116214b1c Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents: 309
diff changeset
539 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
540 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
541 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
542
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
543 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
544
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
545 // 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
546
77
8018c40605d9 The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents: 75
diff changeset
547 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
548 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
549 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
550
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
551 // 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
552
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
553 } 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
554 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
555 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
556 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
557 } 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
558 }
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
559 } 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
560
310
8b8116214b1c Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents: 309
diff changeset
561 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
562
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
563 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
564 }
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
565
115
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
566 // 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
567 // 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
568 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
569 {
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
570 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
571 char *buf = 0;
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
572
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
573 // 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
574 for(;;) {
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
575 size +=64;
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
576 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
577 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
578
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
579 if (len<0) {
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
580 free(buf);
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
581 return 0;
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
582 }
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
583 if (len<size) {
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
584 buf[len]=0;
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
585 return buf;
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
586 }
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
587 }
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
588 }
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
589
77
8018c40605d9 The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents: 75
diff changeset
590 /*
8018c40605d9 The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents: 75
diff changeset
591 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
592
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
593 // 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
594 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
595 {
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 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
597 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
598 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
599
156
1e8f4b05cb65 Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents: 153
diff changeset
600 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
601 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
602 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
603 buf = xmalloc(len+1);
379
74526fc22c25 xreadall() returns void... how does that even compile?
Rob Landley <rob@landley.net>
parents: 370
diff changeset
604 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
605
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
606 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
607 }
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
608
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
609 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
610 {
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
611 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
612 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
613 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
614 }
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
615
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
616 */
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
617
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
618 // 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
619 // 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
620 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
621 {
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
622 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
623 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
624 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
625
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
626 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
627 // 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
628 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
629 fd = open(pidfile, O_CREAT|O_EXCL, 0644);
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
630 if (fd != -1) break;
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
631
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
632 // If it already existed, read it. Loop for race condition.
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
633 fd = open(pidfile, O_RDONLY);
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
634 if (fd == -1) continue;
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
635
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
636 // Is the old program still there?
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
637 spid[xread(fd, spid, sizeof(spid)-1)] = 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
638 close(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
639 pid = atoi(spid);
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
640 if (fd < 1 || kill(pid, 0) == ESRCH) unlink(pidfile);
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
641
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
642 // An else with more sanity checking might be nice here.
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
643 }
156
1e8f4b05cb65 Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents: 153
diff changeset
644
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
645 if (i == 3) error_exit("xpidfile %s", 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
646
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
647 xwrite(fd, spid, sprintf(spid, "%ld\n", (long)getpid()));
41d55b5d49fd Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents: 52
diff changeset
648 close(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
649 }
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
650
308
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
651 // Iterate through an array of files, opening each one and calling a function
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
652 // on that filehandle and name. The special filename "-" means stdin if
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
653 // flags is O_RDONLY, stdout otherwise. An empty argument list calls
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
654 // function() on just stdin/stdout.
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
655 //
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
656 // Note: read only filehandles are automatically closed when function()
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
657 // returns, but writeable filehandles must be close by function()
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
658 void loopfiles_rw(char **argv, int flags, int permissions, int failok,
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
659 void (*function)(int fd, char *name))
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
660 {
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
661 int fd;
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
662
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
663 // If no arguments, read from stdin.
308
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
664 if (!*argv) function(flags ? 1 : 0, "-");
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
665 else do {
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
666 // Filename "-" means read from stdin.
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
667 // Inability to open a file prints a warning, but doesn't exit.
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
668
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
669 if (!strcmp(*argv,"-")) fd=0;
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
670 else if (0>(fd = open(*argv, flags, permissions)) && !failok) {
252
8d751063a563 Add spaces after some commas (from Charlie Shepherd).
Rob Landley <rob@landley.net>
parents: 251
diff changeset
671 perror_msg("%s", *argv);
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
672 toys.exitval = 1;
220
104792581cc9 Fix loopfiles to not call function() on file not found.
Rob Landley <rob@landley.net>
parents: 216
diff changeset
673 continue;
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
674 }
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
675 function(fd, *argv);
308
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
676 if (!flags) close(fd);
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
677 } while (*++argv);
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
678 }
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
679
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
680 // Call loopfiles_rw with O_RDONLY and !failok (common case).
308
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
681 void loopfiles(char **argv, void (*function)(int fd, char *name))
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
682 {
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 379
diff changeset
683 loopfiles_rw(argv, O_RDONLY, 0, 0, function);
308
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
684 }
52600eee8dd6 Add "tee" command.
Rob Landley <rob@landley.net>
parents: 295
diff changeset
685
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
686 // Slow, but small.
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
687
284
603275a05524 Teach get_rawline() to continue until a configurable char, and xstrndup()
Rob Landley <rob@landley.net>
parents: 252
diff changeset
688 char *get_rawline(int fd, long *plen, char end)
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
689 {
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
690 char c, *buf = NULL;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
691 long len = 0;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
692
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
693 for (;;) {
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
694 if (1>read(fd, &c, 1)) break;
354
3c9f47f4fd33 Fix bug spotted by Jean-Christphe Dubois: reserve space for null terminator.
Rob Landley <rob@landley.net>
parents: 344
diff changeset
695 if (!(len & 63)) buf=xrealloc(buf, len+65);
284
603275a05524 Teach get_rawline() to continue until a configurable char, and xstrndup()
Rob Landley <rob@landley.net>
parents: 252
diff changeset
696 if ((buf[len++]=c) == end) break;
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
697 }
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
698 if (buf) buf[len]=0;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
699 if (plen) *plen = len;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
700
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
701 return buf;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
702 }
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
703
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
704 char *get_line(int fd)
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
705 {
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
706 long len;
284
603275a05524 Teach get_rawline() to continue until a configurable char, and xstrndup()
Rob Landley <rob@landley.net>
parents: 252
diff changeset
707 char *buf = get_rawline(fd, &len, '\n');
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
708
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
709 if (buf && buf[--len]=='\n') buf[len]=0;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
710
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
711 return buf;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
712 }
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
713
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
714 // Copy the rest of in to out and close both files.
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
715
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
716 void xsendfile(int in, int out)
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
717 {
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
718 long len;
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
719 char buf[4096];
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
720
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
721 if (in<0) return;
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
722 for (;;) {
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
723 len = xread(in, buf, 4096);
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
724 if (len<1) break;
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
725 xwrite(out, buf, len);
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
726 }
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
727 }
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
728
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
729 int wfchmodat(int fd, char *name, mode_t mode)
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
730 {
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
731 int rc = fchmodat(fd, name, mode, 0);
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
732
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
733 if (rc) {
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
734 perror_msg("chmod '%s' to %04o", name, mode);
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
735 toys.exitval=1;
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
736 }
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
737 return rc;
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
738 }
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
739
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
740 // Open a temporary file to copy an existing file into.
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
741 int copy_tempfile(int fdin, char *name, char **tempname)
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
742 {
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
743 struct stat statbuf;
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
744 int fd;
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
745
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
746 *tempname = xstrndup(name, strlen(name)+6);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
747 strcat(*tempname,"XXXXXX");
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
748 if(-1 == (fd = mkstemp(*tempname))) error_exit("no temp file");
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
749
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
750 // Set permissions of output file
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
751
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
752 fstat(fdin, &statbuf);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
753 fchmod(fd, statbuf.st_mode);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
754
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
755 return fd;
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 197
diff changeset
756 }
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
757
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
758 // Abort the copy and delete the temporary file.
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
759 void delete_tempfile(int fdin, int fdout, char **tempname)
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
760 {
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
761 close(fdin);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
762 close(fdout);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
763 unlink(*tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
764 free(*tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
765 *tempname = NULL;
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
766 }
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
767
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
768 // Copy the rest of the data and replace the original with the copy.
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
769 void replace_tempfile(int fdin, int fdout, char **tempname)
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
770 {
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
771 char *temp = xstrdup(*tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
772
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
773 temp[strlen(temp)-6]=0;
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
774 if (fdin != -1) {
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
775 xsendfile(fdin, fdout);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
776 xclose(fdin);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
777 }
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
778 xclose(fdout);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
779 rename(*tempname, temp);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
780 free(*tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
781 free(temp);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
782 *tempname = NULL;
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
783 }
334
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
784
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
785 // Create a 256 entry CRC32 lookup table.
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
786
337
aaafa1ceaa91 Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents: 334
diff changeset
787 void crc_init(unsigned int *crc_table, int little_endian)
334
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
788 {
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
789 unsigned int i;
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
790
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
791 // Init the CRC32 table (big endian)
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
792 for (i=0; i<256; i++) {
337
aaafa1ceaa91 Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents: 334
diff changeset
793 unsigned int j, c = little_endian ? i : i<<24;
334
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
794 for (j=8; j; j--)
337
aaafa1ceaa91 Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents: 334
diff changeset
795 if (little_endian) c = (c&1) ? (c>>1)^0xEDB88320 : c>>1;
aaafa1ceaa91 Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents: 334
diff changeset
796 else c=c&0x80000000 ? (c<<1)^0x04c11db7 : (c<<1);
334
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
797 crc_table[i] = c;
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
798 }
83c461db9df7 Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents: 311
diff changeset
799 }
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
800
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 // Quick and dirty query size of terminal, doesn't do ANSI probe fallback.
af0cca0aba9d Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents: 399
diff changeset
802 // 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
803 // x=80 y=25 to provide defaults
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
804
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
805 void terminal_size(unsigned *x, unsigned *y)
af0cca0aba9d Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents: 399
diff changeset
806 {
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
807 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
808 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
809
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
810 //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
811 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
812 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
813 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
814 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
815 }
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
816 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
817 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
818
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
819 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
820 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
821 }
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
822 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
823 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
824
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
825 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
826 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
827 }
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
828 }
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
829
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
830 // 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
831 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
832 {
554
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
833 FILE *fps[] = {stdin, stdout, stderr};
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
834 int i;
503
3b9dea897dc0 Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents: 498
diff changeset
835 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
836
554
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
837 for (i=0; i<3; i++) if (isatty(i)) break;
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
838 if (i == 3) 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
839
554
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
840 fprintf(fps[i], "%s (%c/%c):", prompt, def ? 'Y' : 'y', def ? 'n' : 'N');
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
841 fflush(fps[i]);
997e016fbdf0 Using /dev/tty for yesno() is wrong because yes 'n' | cp -ial needs to work.
Rob Landley <rob@landley.net>
parents: 553
diff changeset
842 while (fread(&buf, 1, 1, fps[i])) {
550
b2194045c40e Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents: 535
diff changeset
843 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
844 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
845 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
846
b2194045c40e Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents: 535
diff changeset
847 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
848 }
550
b2194045c40e Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents: 535
diff changeset
849
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
850 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
851 }
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
852
1fb149e75ebf Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents: 443
diff changeset
853 // 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
854 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
855 {
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
856 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
857 struct dirent *entry;
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
858 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
859 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
860
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
861 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
862
1fb149e75ebf Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents: 443
diff changeset
863 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
864 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
865
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
866 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
867
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
868 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
869 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
870
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
871 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
872 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
873
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
874 close(fd);
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
875 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
876
477
f0b07ce5f125 Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents: 475
diff changeset
877 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
878 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
879 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
880 }
1fb149e75ebf Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents: 443
diff changeset
881 }
1fb149e75ebf Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents: 443
diff changeset
882
1fb149e75ebf Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents: 443
diff changeset
883 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
884 }
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
885
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 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
887 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
888 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
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
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 // 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
892 // 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
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 #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
895
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 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
897 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
898 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
899 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
900 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
901 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
902 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
903 };
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
904
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
905 // 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
906 // 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
907
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
908 // 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
909 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
910 {
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
911 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
912
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
913 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
914 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
915 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
916 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
917
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
918 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
919 }
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
920 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
921 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
922 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
923 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
924
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
925 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
926 }
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
927
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
928 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
929 {
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
930 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
931
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
932 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
933 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
934 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
935 }
551
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
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
938 mode_t string_to_mode(char *modestr, mode_t mode)
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 550
diff changeset
939 {
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
940 char *whos = "ogua", *hows = "=+-", *whats = "xwrstX", *whys = "ogu";
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
941 char *s, *str = modestr;
553
75da5d793fc8 Unwind gratuitous macros.
Rob Landley <rob@landley.net>
parents: 551
diff changeset
942
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
943 // Handle octal mode
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
944 if (isdigit(*str)) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
945 mode = strtol(str, &s, 8);
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
946 if (*s || (mode & ~(07777))) goto barf;
553
75da5d793fc8 Unwind gratuitous macros.
Rob Landley <rob@landley.net>
parents: 551
diff changeset
947
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
948 return mode;
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 550
diff changeset
949 }
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
950
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
951 // Gaze into the bin of permission...
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
952 for (;;) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
953 int i, j, dowho, dohow, dowhat;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
954
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
955 dowho = dohow = dowhat = 0;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
956
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
957 // Find the who, how, and what stanzas, in that order
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
958 while (*str && (s = strchr(whos, *str))) {
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
959 dowho |= 1<<(s-whos);
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
960 str++;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
961 }
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
962 if (!dowho) dowho = 8;
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
963 if (!*str || !(s = strchr(hows, *str))) goto barf;
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
964 dohow = *(str++);
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
965
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
966 if (!dohow) goto barf;
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
967 while (*str && (s = strchr(whats, *str))) {
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
968 dowhat |= 1<<(s-whats);
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
969 str++;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
970 }
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
971
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
972 // Convert X to x for directory or if already executable somewhere
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
973 if ((dowhat&32) && (S_ISDIR(mode) || (mode&0111))) dowhat |= 1;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
974
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
975 // Copy mode from another category?
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
976 if (!dowhat && *str && (s = strchr(whys, *str))) {
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 585
diff changeset
977 dowhat = (mode>>(3*(s-whys)))&7;
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
978 str++;
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 550
diff changeset
979 }
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
980
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
981 // Are we ready to do a thing yet?
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
982 if (*str && *(str++) != ',') goto barf;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
983
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
984 // Ok, apply the bits to the mode.
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
985 for (i=0; i<4; i++) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
986 for (j=0; j<3; j++) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
987 mode_t bit = 0;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
988
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
989 // Figure out new value at this location
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
990 if (i == 3) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
991 } else if (dowhat&(1<<j)) bit++;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
992
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
993 // When selection active, modify bit
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
994 if (dowho&(8|(1<<i))) {
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
995 int where = 1<<((3*i)+j);
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
996
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
997 if (dohow == '=' || (bit && dohow == '-'))
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
998 mode &= ~where;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
999 if (bit && dohow != '-') mode |= where;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1000 }
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1001 }
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1002 }
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1003
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1004 if (!*str) break;
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 550
diff changeset
1005 }
578
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1006 return mode;
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1007 barf:
5cc8a8fc08b4 First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents: 565
diff changeset
1008 error_exit("bad mode '%s'", modestr);
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 550
diff changeset
1009 }