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| author | Rich Felker <dalias@aerifal.cx> | 2011-07-28 21:48:53 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-07-28 21:48:53 -0400 |
| commit | bbdcc403cae440c5f965f0f4c0de1f2d7fd256a7 (patch) | |
| tree | eea39bdf70f56aee26ee0c730b1d4d1122e5deab /src | |
| parent | 649af9f73a84aa45742324d44384a873c8709915 (diff) | |
| download | musl-bbdcc403cae440c5f965f0f4c0de1f2d7fd256a7.tar.gz | |
eliminate mk*temp dependency on snprintf
this helps some tiny programs be even more tiny, and barly increases
code size even if both are used.
Diffstat (limited to 'src')
| -rw-r--r-- | src/temp/mktemp.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/temp/mktemp.c b/src/temp/mktemp.c index 654a2794..b04f5dee 100644 --- a/src/temp/mktemp.c +++ b/src/temp/mktemp.c @@ -11,9 +11,9 @@ char *__mktemp(char *template) { struct timespec ts; - size_t l = strlen(template); + size_t i, l = strlen(template); int retries = 10000; - unsigned long r; + unsigned long r, t; if (l < 6 || strcmp(template+l-6, "XXXXXX")) { errno = EINVAL; @@ -23,7 +23,8 @@ char *__mktemp(char *template) clock_gettime(CLOCK_REALTIME, &ts); r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template; while (retries--) { - snprintf(template+l-6, 7, "%06lX", r & 0xffffff); + for (t=r, i=1; i<=6; i++, t>>=4) + template[l-i] = 'A'+(t&15); if (access(template, F_OK) < 0) return template; r = r * 1103515245 + 12345; } |