32 lines
655 B
C
32 lines
655 B
C
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/*
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* tmpnam.c - create a unique filename
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*/
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/* $Header$ */
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#if defined(_POSIX_SOURCE)
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#include <sys/types.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include "loc_incl.h"
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pid_t _getpid(void);
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char *
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tmpnam(char *s) {
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static char name_buffer[L_tmpnam] = "/tmp/tmp.";
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static unsigned long count = 0;
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static char *name = NULL;
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if (!name) {
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name = name_buffer + strlen(name_buffer);
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name = _i_compute((unsigned long)_getpid(), 10, name, 5);
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*name++ = '.';
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*name = '\0';
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}
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if (++count > TMP_MAX) count = 1; /* wrap-around */
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*_i_compute(count, 10, name, 3) = '\0';
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if (s) return strcpy(s, name_buffer);
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else return name_buffer;
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}
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