31 lines
512 B
C
31 lines
512 B
C
#define _GNU_SOURCE
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/stat.h>
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char *mktemp(char *template)
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{
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size_t l = strlen(template);
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int retries = 100;
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struct stat st;
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if (l < 6 || memcmp(template+l-6, "XXXXXX", 6)) {
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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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do {
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__randname(template+l-6);
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if (stat(template, &st)) {
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if (errno != ENOENT) *template = 0;
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return template;
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}
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} while (--retries);
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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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