mirror of
https://github.com/fluencelabs/musl
synced 2025-05-23 20:51:32 +00:00
36 lines
727 B
C
36 lines
727 B
C
#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <time.h>
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#include <stdint.h>
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#include "libc.h"
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char *__mktemp(char *template)
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{
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struct timespec ts;
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size_t i, l = strlen(template);
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int retries = 10000;
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unsigned long r;
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if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
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errno = EINVAL;
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*template = 0;
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return template;
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}
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while (retries--) {
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clock_gettime(CLOCK_REALTIME, &ts);
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r = ts.tv_nsec + (uintptr_t)&ts / 16 + (uintptr_t)template;
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for (i=1; i<=6; i++, r>>=4)
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template[l-i] = 'A'+(r&15);
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if (access(template, F_OK) < 0) return template;
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}
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*template = 0;
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errno = EEXIST;
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return template;
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}
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weak_alias(__mktemp, mktemp);
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