Last change
on this file since 390 was 389, checked in by coas-nagasima, 5 years ago |
ビルドが通るよう更新
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-
Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
1.1 KB
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Rev | Line | |
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[388] | 1 | #include <stdlib.h>
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| 2 | #include <string.h>
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| 3 | #include <unistd.h>
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| 4 | #include <errno.h>
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| 5 | #include <limits.h>
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| 6 | #include "libc.h"
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| 7 |
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| 8 | extern char **__environ;
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| 9 |
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| 10 | int __execvpe(const char *file, char *const argv[], char *const envp[])
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| 11 | {
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| 12 | const char *p, *z, *path = getenv("PATH");
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| 13 | size_t l, k;
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| 14 | int seen_eacces = 0;
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| 15 |
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| 16 | errno = ENOENT;
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| 17 | if (!*file) return -1;
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| 18 |
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| 19 | if (strchr(file, '/'))
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| 20 | return execve(file, argv, envp);
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| 21 |
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| 22 | if (!path) path = "/usr/local/bin:/bin:/usr/bin";
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| 23 | k = strnlen(file, NAME_MAX+1);
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| 24 | if (k > NAME_MAX) {
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| 25 | errno = ENAMETOOLONG;
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| 26 | return -1;
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| 27 | }
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| 28 | l = strnlen(path, PATH_MAX-1)+1;
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| 29 |
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| 30 | for(p=path; ; p=z) {
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| 31 | char b[l+k+1];
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| 32 | z = strchr(p, ':');
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| 33 | if (!z) z = p+strlen(p);
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| 34 | if (z-p >= l) {
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| 35 | if (!*z++) break;
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| 36 | continue;
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| 37 | }
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| 38 | memcpy(b, p, z-p);
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| 39 | b[z-p] = '/';
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| 40 | memcpy(b+(z-p)+(z>p), file, k+1);
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| 41 | execve(b, argv, envp);
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| 42 | if (errno == EACCES) seen_eacces = 1;
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| 43 | else if (errno != ENOENT) return -1;
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| 44 | if (!*z++) break;
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| 45 | }
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| 46 | if (seen_eacces) errno = EACCES;
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| 47 | return -1;
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| 48 | }
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| 49 |
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| 50 | int execvp(const char *file, char *const argv[])
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| 51 | {
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| 52 | return __execvpe(file, argv, __environ);
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| 53 | }
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| 54 |
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| 55 | weak_alias(__execvpe, execvpe);
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