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author | Robert de Bath <rdebath@poboxes.com> | 1998-02-01 11:26:21 +0100 |
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committer | Lubomir Rintel <lkundrak@v3.sk> | 2013-10-23 23:40:14 +0200 |
commit | 48f0b3eb836162d41622cedc1eb5f5168168fb8e (patch) | |
tree | c53156383d4682a0a296f6611575dbc1d64d1881 /libc/misc/tmpnam.c | |
parent | 48798bf2eb93ec3b99720ac2e16093441156653d (diff) | |
download | dev86-48f0b3eb836162d41622cedc1eb5f5168168fb8e.tar.gz |
Import Dev86src-0.13.5.tar.gzv0.13.5
Diffstat (limited to 'libc/misc/tmpnam.c')
-rw-r--r-- | libc/misc/tmpnam.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/libc/misc/tmpnam.c b/libc/misc/tmpnam.c new file mode 100644 index 0000000..5bb72c5 --- /dev/null +++ b/libc/misc/tmpnam.c @@ -0,0 +1,50 @@ +/* + * (C) Shane Kerr <kerr@wizard.net> under terms of LGPL + */ + +#include <unistd.h> +#include <sys/stat.h> +#include <errno.h> + +#ifndef P_tmpdir +#define P_tmpdir "/tmp" +#endif + +#ifndef L_tmpnam +#define L_tmpnam 20 +#endif + +char *tmpnam(s) +char *s; +{ + static char ret_val[L_tmpnam]; + static char c1 = 0; + static char c2 = 0; + static char c3 = 0; + static char uniq_ch[] = + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; + struct stat stbuf; + + do { + sprintf(ret_val, "%s/%05d%c%c%c", P_tmpdir, getpid(), + uniq_ch[c1], uniq_ch[c2], uniq_ch[c3]); + if (++c1 >= 62) { + c1 = 0; + if (++c2 >= 62) { + c2 = 0; + if (++c3 >= 62) { + errno = EEXIST; + return 0; + } + } + } + } while (stat(ret_val, &stbuf) == 0); + + if (s != 0) { + strcpy(s, ret_val); + return s; + } else { + return ret_val; + } +} + |