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authorRich Felker <dalias@aerifal.cx>2011-07-28 22:03:54 -0400
committerRich Felker <dalias@aerifal.cx>2011-07-28 22:03:54 -0400
commitaed707f679cce80afd929f0efaf080f1e8481330 (patch)
treeb537792bd4d0ce0ee3bb4a4adac32edce9268ee7 /src/temp
parentbbdcc403cae440c5f965f0f4c0de1f2d7fd256a7 (diff)
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remove ugly prng from mk*temp and just re-poll time on retry
Diffstat (limited to 'src/temp')
-rw-r--r--src/temp/mktemp.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/src/temp/mktemp.c b/src/temp/mktemp.c
index b04f5dee..c0e06f5e 100644
--- a/src/temp/mktemp.c
+++ b/src/temp/mktemp.c
@@ -13,20 +13,19 @@ char *__mktemp(char *template)
struct timespec ts;
size_t i, l = strlen(template);
int retries = 10000;
- unsigned long r, t;
+ unsigned long r;
if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
errno = EINVAL;
*template = 0;
return template;
}
- clock_gettime(CLOCK_REALTIME, &ts);
- r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template;
while (retries--) {
- for (t=r, i=1; i<=6; i++, t>>=4)
- template[l-i] = 'A'+(t&15);
+ clock_gettime(CLOCK_REALTIME, &ts);
+ r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template;
+ for (i=1; i<=6; i++, r>>=4)
+ template[l-i] = 'A'+(r&15);
if (access(template, F_OK) < 0) return template;
- r = r * 1103515245 + 12345;
}
*template = 0;
errno = EEXIST;