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
|
-
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:
846 bytes
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Rev | Line | |
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[388] | 1 | #include <stdio.h>
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| 2 | #include <fcntl.h>
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| 3 | #include <errno.h>
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| 4 | #include <sys/stat.h>
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| 5 | #include <limits.h>
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| 6 | #include <string.h>
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| 7 | #include "syscall.h"
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| 8 |
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| 9 | #define MAXTRIES 100
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| 10 |
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| 11 | char *__randname(char *);
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| 12 |
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| 13 | char *tempnam(const char *dir, const char *pfx)
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| 14 | {
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| 15 | char s[PATH_MAX];
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| 16 | size_t l, dl, pl;
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| 17 | int try;
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| 18 | int r;
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| 19 |
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| 20 | if (!dir) dir = P_tmpdir;
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| 21 | if (!pfx) pfx = "temp";
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| 22 |
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| 23 | dl = strlen(dir);
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| 24 | pl = strlen(pfx);
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| 25 | l = dl + 1 + pl + 1 + 6;
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| 26 |
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| 27 | if (l >= PATH_MAX) {
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| 28 | errno = ENAMETOOLONG;
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| 29 | return 0;
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| 30 | }
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| 31 |
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| 32 | memcpy(s, dir, dl);
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| 33 | s[dl] = '/';
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| 34 | memcpy(s+dl+1, pfx, pl);
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| 35 | s[dl+1+pl] = '_';
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| 36 | s[l] = 0;
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| 37 |
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| 38 | for (try=0; try<MAXTRIES; try++) {
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| 39 | __randname(s+l-6);
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| 40 | #ifdef SYS_lstat
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| 41 | r = __syscall(SYS_lstat, s, &(struct stat){0});
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| 42 | #else
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| 43 | r = __syscall(SYS_fstatat, AT_FDCWD, s,
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| 44 | &(struct stat){0}, AT_SYMLINK_NOFOLLOW);
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| 45 | #endif
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| 46 | if (r == -ENOENT) return strdup(s);
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| 47 | }
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| 48 | return 0;
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| 49 | }
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