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avoid limited space of random temp file names if clock resolution is low

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this is not an issue that was actually hit, but I noticed it during
previous changes to __randname: if the resolution of tv_nsec is too
low, the space of temp file names obtainable by a thread could
plausibly be exhausted. mixing in tv_sec avoids this.
This commit is contained in:
Rich Felker 2022-06-23 11:53:28 -04:00
parent 4100279825
commit a23a3da29b
1 changed files with 1 additions and 1 deletions
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2
src/temp/__randname.c
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@ -11,7 +11,7 @@ char *__randname(char *template)
unsigned long r;
__clock_gettime(CLOCK_REALTIME, &ts);
r = ts.tv_nsec + __pthread_self()->tid * 65537UL;
r = ts.tv_sec + ts.tv_nsec + __pthread_self()->tid * 65537UL;
for (i=0; i<6; i++, r>>=5)
template[i] = 'A'+(r&15)+(r&16)*2;