Mercurial > hg > toybox
annotate lib/lib.c @ 595:d8566c3321f0 0.3.0
Multiplexer needs stayroot flag for suid handling.
author | Rob Landley <rob@landley.net> |
---|---|
date | Mon, 11 Jun 2012 23:57:16 -0500 |
parents | be4b2d3796eb |
children | 90d6026c36c3 |
rev | line source |
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1 /* vi: set sw=4 ts=4 :*/ |
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2 /* lib.c - reusable stuff. |
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3 * |
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4 * Functions with the x prefix are wrappers for library functions. They either |
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5 * succeed or kill the program with an error message, but never return failure. |
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6 * They usually have the same arguments and return value as the function they |
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7 * wrap. |
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8 * |
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9 * Copyright 2006 Rob Landley <rob@landley.net> |
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10 */ |
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11 |
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12 #include "toys.h" |
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13 |
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14 // Strcpy with size checking: exit if there's not enough space for the string. |
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15 void xstrcpy(char *dest, char *src, size_t size) |
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16 { |
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17 if (strlen(src)+1 > size) error_exit("xstrcpy"); |
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18 strcpy(dest, src); |
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19 } |
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20 |
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21 void verror_msg(char *msg, int err, va_list va) |
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22 { |
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23 char *s = ": %s"; |
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24 |
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25 fprintf(stderr, "%s: ", toys.which->name); |
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26 if (msg) vfprintf(stderr, msg, va); |
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27 else s+=2; |
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28 if (err) fprintf(stderr, s, strerror(err)); |
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29 putc('\n', stderr); |
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30 } |
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31 |
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32 void error_msg(char *msg, ...) |
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33 { |
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34 va_list va; |
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35 |
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36 va_start(va, msg); |
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37 verror_msg(msg, 0, va); |
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38 va_end(va); |
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39 } |
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40 |
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41 void perror_msg(char *msg, ...) |
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42 { |
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43 va_list va; |
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44 |
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45 va_start(va, msg); |
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46 verror_msg(msg, errno, va); |
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47 va_end(va); |
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48 } |
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49 |
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50 // Die with an error message. |
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51 void error_exit(char *msg, ...) |
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52 { |
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53 va_list va; |
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54 |
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55 if (CFG_HELP && toys.exithelp) { |
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56 *toys.optargs=*toys.argv; |
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57 USE_HELP(help_main();) // dear gcc: shut up. |
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58 fprintf(stderr,"\n"); |
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59 } |
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60 |
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61 va_start(va, msg); |
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62 verror_msg(msg, 0, va); |
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63 va_end(va); |
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64 |
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65 exit(!toys.exitval ? 1 : toys.exitval); |
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66 } |
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67 |
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68 |
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69 // Die with an error message and strerror(errno) |
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70 void perror_exit(char *msg, ...) |
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71 { |
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72 va_list va; |
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73 |
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74 va_start(va, msg); |
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75 verror_msg(msg, errno, va); |
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76 va_end(va); |
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77 |
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78 exit(!toys.exitval ? 1 : toys.exitval); |
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79 } |
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80 |
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81 // Die unless we can allocate memory. |
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82 void *xmalloc(size_t size) |
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83 { |
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84 void *ret = malloc(size); |
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85 if (!ret) error_exit("xmalloc"); |
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86 |
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87 return ret; |
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88 } |
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89 |
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90 // Die unless we can allocate prezeroed memory. |
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91 void *xzalloc(size_t size) |
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92 { |
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93 void *ret = xmalloc(size); |
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94 memset(ret, 0, size); |
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95 return ret; |
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96 } |
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97 |
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98 // Die unless we can change the size of an existing allocation, possibly |
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99 // moving it. (Notice different arguments from libc function.) |
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100 void *xrealloc(void *ptr, size_t size) |
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101 { |
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102 ptr = realloc(ptr, size); |
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103 if (!ptr) error_exit("xrealloc"); |
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104 |
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105 return ptr; |
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106 } |
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107 |
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108 // Die unless we can allocate a copy of this many bytes of string. |
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109 char *xstrndup(char *s, size_t n) |
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110 { |
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111 char *ret = xmalloc(++n); |
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112 strncpy(ret, s, n); |
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113 ret[--n]=0; |
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114 |
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115 return ret; |
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116 } |
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117 |
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118 // Die unless we can allocate a copy of this string. |
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119 char *xstrdup(char *s) |
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120 { |
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121 return xstrndup(s, strlen(s)); |
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|
122 } |
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Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
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|
123 |
4
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Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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124 // Die unless we can allocate enough space to sprintf() into. |
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|
125 char *xmsprintf(char *format, ...) |
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|
126 { |
126
7b22987a7b47
Vladimir Oleynik pointed out that va_start() twice in the same function
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|
127 va_list va, va2; |
4
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|
128 int len; |
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|
129 char *ret; |
156
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Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
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|
130 |
126
7b22987a7b47
Vladimir Oleynik pointed out that va_start() twice in the same function
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|
131 va_start(va, format); |
7b22987a7b47
Vladimir Oleynik pointed out that va_start() twice in the same function
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|
132 va_copy(va2, va); |
4
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|
133 |
126
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Vladimir Oleynik pointed out that va_start() twice in the same function
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124
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|
134 // How long is it? |
4
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|
135 len = vsnprintf(0, 0, format, va); |
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|
136 len++; |
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|
137 va_end(va); |
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|
138 |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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|
139 // Allocate and do the sprintf() |
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|
140 ret = xmalloc(len); |
156
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Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
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diff
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|
141 vsnprintf(ret, len, format, va2); |
126
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Vladimir Oleynik pointed out that va_start() twice in the same function
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|
142 va_end(va2); |
4
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|
143 |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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|
144 return ret; |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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|
145 } |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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|
146 |
70
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
147 void xprintf(char *format, ...) |
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|
148 { |
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Add "echo". Has -n and -e (but not \0123 yet).
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|
149 va_list va; |
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|
150 va_start(va, format); |
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|
151 |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
152 vprintf(format, va); |
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|
153 if (ferror(stdout)) perror_exit("write"); |
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|
154 } |
a1b464bbef08
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|
155 |
128
0a90a5fbc1bf
Add xputs() to detect EOF on writes.
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|
156 void xputs(char *s) |
0a90a5fbc1bf
Add xputs() to detect EOF on writes.
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126
diff
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|
157 { |
0a90a5fbc1bf
Add xputs() to detect EOF on writes.
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diff
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|
158 if (EOF == puts(s)) perror_exit("write"); |
0a90a5fbc1bf
Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
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diff
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|
159 } |
0a90a5fbc1bf
Add xputs() to detect EOF on writes.
Rob Landley <rob@landley.net>
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diff
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|
160 |
70
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
161 void xputc(char c) |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
162 { |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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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>
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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>
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diff
changeset
|
167 { |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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parents:
63
diff
changeset
|
168 if (fflush(stdout)) perror_exit("write");; |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
169 } |
a1b464bbef08
Add "echo". Has -n and -e (but not \0123 yet).
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|
170 |
3
266a462ed18c
Next drop of toysh, plus more infratructure.
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diff
changeset
|
171 // Die unless we can exec argv[] (or run builtin command). Note that anything |
266a462ed18c
Next drop of toysh, plus more infratructure.
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|
172 // with a path isn't a builtin, so /bin/sh won't match the builtin sh. |
7
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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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.
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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.
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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 | 181 void xaccess(char *path, int flags) |
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 | 184 } |
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.
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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 { |
592
be4b2d3796eb
Feeding -1 to xdup() isn't an error.
Rob Landley <rob@landley.net>
parents:
590
diff
changeset
|
213 if (fd != -1) { |
be4b2d3796eb
Feeding -1 to xdup() isn't an error.
Rob Landley <rob@landley.net>
parents:
590
diff
changeset
|
214 fd = dup(fd); |
be4b2d3796eb
Feeding -1 to xdup() isn't an error.
Rob Landley <rob@landley.net>
parents:
590
diff
changeset
|
215 if (fd == -1) perror_exit("xdup"); |
be4b2d3796eb
Feeding -1 to xdup() isn't an error.
Rob Landley <rob@landley.net>
parents:
590
diff
changeset
|
216 } |
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
|
217 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
|
218 } |
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
|
219 |
2
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff
changeset
|
220 // 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
|
221 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
|
222 { |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff
changeset
|
223 FILE *f = fopen(path, mode); |
251
d9ddba2c7acf
Remove extra newlines on error_paths
Charlie Shepherd <masterdriverz@gentoo.org>
parents:
250
diff
changeset
|
224 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
|
225 return f; |
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff
changeset
|
226 } |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents:
3
diff
changeset
|
227 |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents:
53
diff
changeset
|
228 // 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
|
229 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
|
230 { |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents:
53
diff
changeset
|
231 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
|
232 |
63
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents:
53
diff
changeset
|
233 while (count<len) { |
69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
Rob Landley <rob@landley.net>
parents:
53
diff
changeset
|
234 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
|
235 if (!i) break; |
8
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents:
7
diff
changeset
|
236 if (i<0) return i; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents:
7
diff
changeset
|
237 count += i; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents:
7
diff
changeset
|
238 } |
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 return count; |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents:
7
diff
changeset
|
241 } |
04f66da2bdbf
Add reread(), readall(), and xread() on the bus ride in to work...
landley@driftwood
parents:
7
diff
changeset
|
242 |
50
63c168b65fa6
Add rewrite(), writeall(),and xwrite() to match the read versions.
Rob Landley <rob@landley.net>
parents:
49
diff
changeset
|
243 // 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
|
244 ssize_t writeall(int fd, void *buf, size_t len) |
50
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245 { |
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246 size_t count = 0; |
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247 while (count<len) { |
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248 int i = write(fd, buf+count, len-count); |
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249 if (i<1) return i; |
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250 count += i; |
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251 } |
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252 |
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253 return count; |
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254 } |
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255 |
53
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256 // Die if there's an error other than EOF. |
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257 size_t xread(int fd, void *buf, size_t len) |
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258 { |
399
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259 ssize_t ret = read(fd, buf, len); |
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260 if (ret < 0) perror_exit("xread"); |
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261 |
399
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262 return ret; |
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263 } |
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264 |
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265 void xreadall(int fd, void *buf, size_t len) |
53
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266 { |
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267 if (len != readall(fd, buf, len)) perror_exit("xreadall"); |
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268 } |
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269 |
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270 // There's no xwriteall(), just xwrite(). When we read, there may or may not |
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271 // be more data waiting. When we write, there is data and it had better go |
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272 // somewhere. |
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273 |
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274 void xwrite(int fd, void *buf, size_t len) |
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275 { |
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276 if (len != writeall(fd, buf, len)) perror_exit("xwrite"); |
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277 } |
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278 |
340 | 279 // Die if lseek fails, probably due to being called on a pipe. |
280 | |
281 off_t xlseek(int fd, off_t offset, int whence) | |
282 { | |
283 offset = lseek(fd, offset, whence); | |
284 if (offset<0) perror_exit("lseek"); | |
285 | |
286 return offset; | |
287 } | |
288 | |
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289 char *xgetcwd(void) |
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290 { |
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291 char *buf = getcwd(NULL, 0); |
70
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292 if (!buf) perror_exit("xgetcwd"); |
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293 |
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294 return buf; |
4
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295 } |
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296 |
95
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297 void xstat(char *path, struct stat *st) |
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298 { |
252
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299 if(stat(path, st)) perror_exit("Can't stat %s", path); |
95
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300 } |
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301 |
16
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302 // Cannonicalizes path by removing ".", "..", and "//" elements. This is not |
44 | 303 // the same as realpath(), where "dir/.." could wind up somewhere else by |
304 // following symlinks. | |
16
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305 char *xabspath(char *path) |
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306 { |
16
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307 char *from, *to; |
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308 |
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309 // If this isn't an absolute path, make it one with cwd. |
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310 if (path[0]!='/') { |
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311 char *cwd=xgetcwd(); |
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312 path = xmsprintf("%s/%s", cwd, path); |
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313 free(cwd); |
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314 } else path = xstrdup(path); |
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315 |
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316 // Loop through path elements |
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317 from = to = path; |
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318 while (*from) { |
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319 |
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320 // Continue any current path component. |
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321 if (*from!='/') { |
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322 *(to++) = *(from++); |
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323 continue; |
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324 } |
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325 |
16
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326 // Skip duplicate slashes. |
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327 while (*from=='/') from++; |
156
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328 |
16
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329 // Start of a new filename. Handle . and .. |
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330 while (*from=='.') { |
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331 // Skip . |
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332 if (from[1]=='/') from += 2; |
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333 else if (!from[1]) from++; |
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334 // Back up for .. |
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335 else if (from[1]=='.') { |
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336 if (from[2]=='/') from +=3; |
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337 else if(!from[2]) from+=2; |
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338 else break; |
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339 while (to>path && *(--to)!='/'); |
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340 } else break; |
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341 } |
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342 // Add directory separator slash. |
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343 *(to++) = '/'; |
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344 } |
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345 *to = 0; |
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346 |
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347 return path; |
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348 } |
4
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349 |
585
1dcd7994abea
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350 // Resolve all symlinks, returning malloc() memory. |
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351 char *xrealpath(char *path) |
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352 { |
1dcd7994abea
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353 char *new = realpath(path, NULL); |
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354 if (!new) perror_exit("realpath '%s'", path); |
1dcd7994abea
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355 return new; |
1dcd7994abea
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356 } |
1dcd7994abea
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357 |
292
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Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
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358 void xchdir(char *path) |
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359 { |
344 | 360 if (chdir(path)) error_exit("chdir '%s'", path); |
292
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361 } |
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362 |
216
5697a3f7c8cf
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363 // Ensure entire path exists. |
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364 // If mode != -1 set permissions on newly created dirs. |
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365 // Requires that path string be writable (for temporary null terminators). |
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366 void xmkpath(char *path, int mode) |
5697a3f7c8cf
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367 { |
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368 char *p, old; |
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369 mode_t mask; |
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370 int rc; |
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371 struct stat st; |
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372 |
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373 for (p = path; ; p++) { |
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374 if (!*p || *p == '/') { |
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375 old = *p; |
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376 *p = rc = 0; |
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377 if (stat(path, &st) || !S_ISDIR(st.st_mode)) { |
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378 if (mode != -1) { |
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379 mask=umask(0); |
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380 rc = mkdir(path, mode); |
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381 umask(mask); |
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382 } else rc = mkdir(path, 0777); |
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383 } |
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384 *p = old; |
252
8d751063a563
Add spaces after some commas (from Charlie Shepherd).
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385 if(rc) perror_exit("mkpath '%s'", path); |
216
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386 } |
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387 if (!*p) break; |
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388 } |
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389 } |
370 | 390 |
391 // setuid() can fail (for example, too many processes belonging to that user), | |
392 // which opens a security hole if the process continues as the original user. | |
393 | |
394 void xsetuid(uid_t uid) | |
395 { | |
396 if (setuid(uid)) perror_exit("xsetuid"); | |
397 } | |
398 | |
399 | |
20
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400 // Find all file in a colon-separated path with access type "type" (generally |
3981c96f9285
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401 // X_OK or R_OK). Returns a list of absolute paths to each file found, in |
3981c96f9285
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402 // order. |
16
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|
403 |
20
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404 struct string_list *find_in_path(char *path, char *filename) |
16
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405 { |
295
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Fix which (the meaning of -a was reversed, and it was finding the _last_ hit).
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406 struct string_list *rlist = NULL, **prlist=&rlist; |
20
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407 char *cwd = xgetcwd(); |
16
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|
408 |
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|
409 for (;;) { |
535
d51be130fda2
More stabs at getting #includes right, and moving off of deprecated functions.
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503
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410 char *next = path ? strchr(path, ':') : NULL; |
16
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411 int len = next ? next-path : strlen(path); |
20
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412 struct string_list *rnext; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
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|
413 struct stat st; |
16
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414 |
20
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415 rnext = xmalloc(sizeof(void *) + strlen(filename) |
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416 + (len ? len : strlen(cwd)) + 2); |
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417 if (!len) sprintf(rnext->str, "%s/%s", cwd, filename); |
16
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418 else { |
20
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419 char *res = rnext->str; |
16
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420 strncpy(res, path, len); |
20
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421 res += len; |
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422 *(res++) = '/'; |
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423 strcpy(res, filename); |
16
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424 } |
dd10785b6532
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425 |
20
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426 // Confirm it's not a directory. |
3981c96f9285
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427 if (!stat(rnext->str, &st) && S_ISREG(st.st_mode)) { |
295
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428 *prlist = rnext; |
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429 rnext->next = NULL; |
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430 prlist = &(rnext->next); |
20
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431 } else free(rnext); |
16
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|
432 |
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433 if (!next) break; |
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|
434 path += len; |
dd10785b6532
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8
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|
435 path++; |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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|
436 } |
732b055e17f7
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|
437 free(cwd); |
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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changeset
|
438 |
20
3981c96f9285
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changeset
|
439 return rlist; |
4
732b055e17f7
Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
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diff
changeset
|
440 } |
7
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
441 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
changeset
|
442 // 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.
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diff
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|
443 // 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.
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4
diff
changeset
|
444 // always null terminated (unless buflen is 0). |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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4
diff
changeset
|
445 void utoa_to_buf(unsigned n, char *buf, unsigned buflen) |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
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446 { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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4
diff
changeset
|
447 int i, out = 0; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
changeset
|
448 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
changeset
|
449 if (buflen) { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
450 for (i=1000000000; i; i/=10) { |
fc9c0503d5e2
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diff
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|
451 int res = n/i; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
changeset
|
452 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
changeset
|
453 if ((res || out || i == 1) && --buflen>0) { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
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|
454 out++; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
changeset
|
455 n -= res*i; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
456 *buf++ = '0' + res; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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4
diff
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|
457 } |
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
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4
diff
changeset
|
459 *buf = 0; |
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 } |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
462 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
changeset
|
463 // Convert signed integer to ascii, using utoa_to_buf() |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
changeset
|
464 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
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changeset
|
465 { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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4
diff
changeset
|
466 if (buflen && n<0) { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
467 n = -n; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
468 *buf++ = '-'; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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changeset
|
469 buflen--; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
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|
470 } |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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|
471 utoa_to_buf((unsigned)n, buf, buflen); |
fc9c0503d5e2
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|
472 } |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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4
diff
changeset
|
473 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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diff
changeset
|
474 // 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.
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|
475 // second time will overwrite the previous results. |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
476 // |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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4
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changeset
|
477 // 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.
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|
478 // 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.
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|
479 // http://www.unix.org/whitepapers/64bit.html for details. |
fc9c0503d5e2
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landley@driftwood
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diff
changeset
|
480 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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changeset
|
481 static char itoa_buf[12]; |
fc9c0503d5e2
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landley@driftwood
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|
482 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
483 // 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
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|
484 char *utoa(unsigned n) |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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|
485 { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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changeset
|
486 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
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4
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changeset
|
487 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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changeset
|
488 return itoa_buf; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
489 } |
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
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4
diff
changeset
|
491 char *itoa(int n) |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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diff
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|
492 { |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
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changeset
|
493 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
|
494 |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
495 return itoa_buf; |
fc9c0503d5e2
Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents:
4
diff
changeset
|
496 } |
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
|
497 |
102
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
498 // 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
|
499 // (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
|
500 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
|
501 { |
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
|
502 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
|
503 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
|
504 |
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
|
505 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
|
506 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
|
507 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
|
508 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
|
509 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
|
510 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
|
511 } |
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
|
512 } |
397
b7afbc6b753a
Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents:
379
diff
changeset
|
513 |
102
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
514 return val; |
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
515 } |
aa4fa2543a65
Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents:
97
diff
changeset
|
516 |
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
|
517 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
|
518 { |
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 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
|
520 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
|
521 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
|
522 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 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
|
525 } |
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
|
526 |
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
|
527 // 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
|
528 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
|
529 { |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
530 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
|
531 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
|
532 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
533 // 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
|
534 |
75
89ca591a9236
More random progress on mke2fs. Nothing to see yet.
Rob Landley <rob@landley.net>
parents:
70
diff
changeset
|
535 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
|
536 |
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 // 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
|
538 // 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
|
539 // 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
|
540 |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
541 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
|
542 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
|
543 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
|
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 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
|
546 |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
547 // 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
|
548 |
77
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
549 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
|
550 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
|
551 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
|
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 // 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
|
554 |
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 } 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
|
556 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
|
557 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
|
558 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
|
559 } 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
|
560 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
561 } 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
|
562 |
310
8b8116214b1c
Roberto Foglietta pointed out that readall() needs fdlength() to restore
Rob Landley <rob@landley.net>
parents:
309
diff
changeset
|
563 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
|
564 |
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
|
565 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
|
566 } |
41d55b5d49fd
Add start of mke2fs/gene2fs, and some other stuff I've been working on.
Rob Landley <rob@landley.net>
parents:
52
diff
changeset
|
567 |
115
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
568 // 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
|
569 // 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
|
570 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
|
571 { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
572 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
|
573 char *buf = 0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
574 |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
575 // 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
|
576 for(;;) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
577 size +=64; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
578 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
|
579 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
|
580 |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
581 if (len<0) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
582 free(buf); |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
583 return 0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
584 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
585 if (len<size) { |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
586 buf[len]=0; |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
587 return buf; |
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 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
590 } |
19b5567f0a1b
Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents:
102
diff
changeset
|
591 |
77
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
592 /* |
8018c40605d9
The fdlength() ioctl apparently doesn't work on files (and the lseek trick
Rob Landley <rob@landley.net>
parents:
75
diff
changeset
|
593 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
|
594 |
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
|
595 // 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
|
596 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
|
597 { |
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 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
|
599 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
|
600 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
|
601 |
156
1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
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602 fd = open(name, O_RDONLY); |
53
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603 if (fd == -1) return 0; |
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604 len = fdlength(fd); |
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605 buf = xmalloc(len+1); |
379
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606 buf[readall(fd, buf, len)] = 0; |
53
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607 |
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608 return buf; |
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609 } |
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610 |
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611 char *xreadfile(char *name) |
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612 { |
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|
613 char *buf = readfile(name); |
70
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Add "echo". Has -n and -e (but not \0123 yet).
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614 if (!buf) perror_exit("xreadfile %s", name); |
53
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615 return buf; |
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616 } |
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617 |
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618 */ |
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619 |
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620 // Open a /var/run/NAME.pid file, dying if we can't write it or if it currently |
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621 // exists and is this executable. |
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622 void xpidfile(char *name) |
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623 { |
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624 char pidfile[256], spid[32]; |
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625 int i, fd; |
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626 pid_t pid; |
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627 |
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628 sprintf(pidfile, "/var/run/%s.pid", name); |
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629 // Try three times to open the sucker. |
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630 for (i=0; i<3; i++) { |
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631 fd = open(pidfile, O_CREAT|O_EXCL, 0644); |
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632 if (fd != -1) break; |
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633 |
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634 // If it already existed, read it. Loop for race condition. |
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635 fd = open(pidfile, O_RDONLY); |
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636 if (fd == -1) continue; |
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637 |
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638 // Is the old program still there? |
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639 spid[xread(fd, spid, sizeof(spid)-1)] = 0; |
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640 close(fd); |
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641 pid = atoi(spid); |
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642 if (fd < 1 || kill(pid, 0) == ESRCH) unlink(pidfile); |
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643 |
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644 // An else with more sanity checking might be nice here. |
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645 } |
156
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646 |
53
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647 if (i == 3) error_exit("xpidfile %s", name); |
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648 |
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649 xwrite(fd, spid, sprintf(spid, "%ld\n", (long)getpid())); |
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650 close(fd); |
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651 } |
185
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652 |
308 | 653 // Iterate through an array of files, opening each one and calling a function |
654 // on that filehandle and name. The special filename "-" means stdin if | |
655 // flags is O_RDONLY, stdout otherwise. An empty argument list calls | |
656 // function() on just stdin/stdout. | |
657 // | |
658 // Note: read only filehandles are automatically closed when function() | |
659 // returns, but writeable filehandles must be close by function() | |
397
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660 void loopfiles_rw(char **argv, int flags, int permissions, int failok, |
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661 void (*function)(int fd, char *name)) |
185
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662 { |
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663 int fd; |
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664 |
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665 // If no arguments, read from stdin. |
308 | 666 if (!*argv) function(flags ? 1 : 0, "-"); |
185
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667 else do { |
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668 // Filename "-" means read from stdin. |
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669 // Inability to open a file prints a warning, but doesn't exit. |
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670 |
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671 if (!strcmp(*argv,"-")) fd=0; |
397
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672 else if (0>(fd = open(*argv, flags, permissions)) && !failok) { |
252
8d751063a563
Add spaces after some commas (from Charlie Shepherd).
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673 perror_msg("%s", *argv); |
185
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674 toys.exitval = 1; |
220
104792581cc9
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675 continue; |
185
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676 } |
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677 function(fd, *argv); |
308 | 678 if (!flags) close(fd); |
185
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679 } while (*++argv); |
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680 } |
201
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681 |
397
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682 // Call loopfiles_rw with O_RDONLY and !failok (common case). |
308 | 683 void loopfiles(char **argv, void (*function)(int fd, char *name)) |
684 { | |
397
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685 loopfiles_rw(argv, O_RDONLY, 0, 0, function); |
308 | 686 } |
687 | |
201
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688 // Slow, but small. |
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689 |
284
603275a05524
Teach get_rawline() to continue until a configurable char, and xstrndup()
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690 char *get_rawline(int fd, long *plen, char end) |
201
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691 { |
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692 char c, *buf = NULL; |
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693 long len = 0; |
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694 |
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695 for (;;) { |
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696 if (1>read(fd, &c, 1)) break; |
354
3c9f47f4fd33
Fix bug spotted by Jean-Christphe Dubois: reserve space for null terminator.
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697 if (!(len & 63)) buf=xrealloc(buf, len+65); |
284
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698 if ((buf[len++]=c) == end) break; |
201
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699 } |
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700 if (buf) buf[len]=0; |
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701 if (plen) *plen = len; |
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702 |
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703 return buf; |
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|
704 } |
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705 |
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706 char *get_line(int fd) |
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707 { |
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708 long len; |
284
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709 char *buf = get_rawline(fd, &len, '\n'); |
201
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710 |
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711 if (buf && buf[--len]=='\n') buf[len]=0; |
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712 |
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713 return buf; |
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714 } |
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715 |
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716 // Copy the rest of in to out and close both files. |
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717 |
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718 void xsendfile(int in, int out) |
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719 { |
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720 long len; |
209 | 721 char buf[4096]; |
201
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722 |
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723 if (in<0) return; |
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724 for (;;) { |
209 | 725 len = xread(in, buf, 4096); |
201
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726 if (len<1) break; |
209 | 727 xwrite(out, buf, len); |
201
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728 } |
209 | 729 } |
730 | |
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
|
731 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
|
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 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
|
734 |
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 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
|
736 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
|
737 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
|
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 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
|
740 } |
7becb497c3c4
Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents:
585
diff
changeset
|
741 |
209 | 742 // Open a temporary file to copy an existing file into. |
743 int copy_tempfile(int fdin, char *name, char **tempname) | |
744 { | |
745 struct stat statbuf; | |
746 int fd; | |
747 | |
748 *tempname = xstrndup(name, strlen(name)+6); | |
749 strcat(*tempname,"XXXXXX"); | |
750 if(-1 == (fd = mkstemp(*tempname))) error_exit("no temp file"); | |
751 | |
752 // Set permissions of output file | |
753 | |
754 fstat(fdin, &statbuf); | |
755 fchmod(fd, statbuf.st_mode); | |
756 | |
757 return fd; | |
201
5d523752715a
Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents:
197
diff
changeset
|
758 } |
209 | 759 |
760 // Abort the copy and delete the temporary file. | |
761 void delete_tempfile(int fdin, int fdout, char **tempname) | |
762 { | |
763 close(fdin); | |
764 close(fdout); | |
765 unlink(*tempname); | |
766 free(*tempname); | |
767 *tempname = NULL; | |
768 } | |
769 | |
770 // Copy the rest of the data and replace the original with the copy. | |
771 void replace_tempfile(int fdin, int fdout, char **tempname) | |
772 { | |
773 char *temp = xstrdup(*tempname); | |
774 | |
775 temp[strlen(temp)-6]=0; | |
776 if (fdin != -1) { | |
777 xsendfile(fdin, fdout); | |
778 xclose(fdin); | |
779 } | |
780 xclose(fdout); | |
781 rename(*tempname, temp); | |
782 free(*tempname); | |
783 free(temp); | |
784 *tempname = NULL; | |
785 } | |
334
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
786 |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
787 // 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
|
788 |
337
aaafa1ceaa91
Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents:
334
diff
changeset
|
789 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
|
790 { |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
791 unsigned int i; |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
792 |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
793 // Init the CRC32 table (big endian) |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
794 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
|
795 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
|
796 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
|
797 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
|
798 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
|
799 crc_table[i] = c; |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
800 } |
83c461db9df7
Check in crc_init needed by cksum. (Oops.)
Rob Landley <rob@landley.net>
parents:
311
diff
changeset
|
801 } |
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
|
802 |
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 // 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
|
804 // 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
|
805 // 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
|
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 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
|
808 { |
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 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
|
810 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
|
811 |
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 //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
|
813 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
|
814 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
|
815 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
|
816 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
|
817 } |
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 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
|
819 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
|
820 |
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 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
|
822 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
|
823 } |
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 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
|
825 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
|
826 |
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 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
|
828 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
|
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 } |
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
|
831 |
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 // 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
|
833 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
|
834 { |
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
|
835 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
|
836 int i; |
503
3b9dea897dc0
Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents:
498
diff
changeset
|
837 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
|
838 |
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
|
839 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
|
840 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
|
841 |
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
|
842 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
|
843 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
|
844 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
|
845 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
|
846 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
|
847 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
|
848 |
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
849 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
|
850 } |
550
b2194045c40e
Remove "feature test macros", replace non-portable fdprintf() with standard fprintf().
Rob Landley <rob@landley.net>
parents:
535
diff
changeset
|
851 |
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
|
852 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
|
853 } |
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
|
854 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
855 // 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
|
856 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
|
857 { |
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
|
858 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
|
859 struct dirent *entry; |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
860 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
|
861 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
|
862 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
863 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
|
864 |
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 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
|
866 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
|
867 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
868 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
|
869 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
870 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
|
871 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
|
872 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
873 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
|
874 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
|
875 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
876 close(fd); |
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
877 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
|
878 |
477
f0b07ce5f125
Cleanups to pidof (including some global infrastructure shared with killall).
Rob Landley <rob@landley.net>
parents:
475
diff
changeset
|
879 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
|
880 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
|
881 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
|
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 } |
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 |
1fb149e75ebf
Add killall by Andreas Heck, and factor out common pid code to lib.h.
Rob Landley <rob@landley.net>
parents:
443
diff
changeset
|
885 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
|
886 } |
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
|
887 |
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 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
|
889 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
|
890 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
|
891 }; |
c9aaceccd6bd
Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents:
480
diff
changeset
|
892 |
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 // 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
|
894 // 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
|
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 #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
|
897 |
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 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
|
899 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
|
900 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
|
901 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
|
902 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
|
903 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
|
904 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
|
905 }; |
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 |
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 // 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
|
908 // 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
|
909 |
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 // 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
|
911 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
|
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 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
|
914 |
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 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
|
916 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
|
917 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
|
918 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
|
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 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
|
921 } |
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 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
|
923 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
|
924 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
|
925 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
|
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 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
|
928 } |
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 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
|
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 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
|
933 |
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 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
|
935 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
|
936 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
|
937 } |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
938 |
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
939 |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
940 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
|
941 { |
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
|
942 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
|
943 char *s, *str = modestr; |
553 | 944 |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
945 // 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
|
946 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
|
947 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
|
948 if (*s || (mode & ~(07777))) goto barf; |
553 | 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 return mode; |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
951 } |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
952 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
953 // 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
|
954 for (;;) { |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
955 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
|
956 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
957 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
|
958 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
959 // 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
|
960 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
|
961 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
|
962 str++; |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
963 } |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
964 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
|
965 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
|
966 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
|
967 |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
968 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
|
969 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
|
970 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
|
971 str++; |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
972 } |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
973 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
974 // 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
|
975 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
|
976 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
977 // 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
|
978 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
|
979 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
|
980 str++; |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
981 } |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
982 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
983 // 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
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984 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
|
985 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
986 // 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
|
987 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
|
988 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
|
989 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
|
990 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
991 // 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
|
992 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
|
993 } 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
|
994 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
995 // 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
|
996 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
|
997 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
|
998 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
999 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
|
1000 mode &= ~where; |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1001 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
|
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 } |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1005 |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1006 if (!*str) break; |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1007 } |
578
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1008 return mode; |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1009 barf: |
5cc8a8fc08b4
First pass at a complete rewrite of string_to_mode(). (It compiled!)
Rob Landley <rob@landley.net>
parents:
565
diff
changeset
|
1010 error_exit("bad mode '%s'", modestr); |
551
2548e6e590b2
Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents:
550
diff
changeset
|
1011 } |