scc

simple c99 compiler
git clone git://git.simple-cc.org/scc
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tmpnam.c (353B)

      1 #include <sys.h>
      2 
      3 #include <stdio.h>
      4 #include <string.h>
      5 
      6 #include "../syscall.h"
      7 
      8 #undef tmpnam
      9 
     10 char *
     11 tmpnam(char *s)
     12 {
     13 	static char tmpl[] = _TMPNAME;
     14 	char *p;
     15 
     16 	for (;;) {
     17 		for (p = tmpl; *p && *p != '9'; ++p)
     18 			;
     19 		if (*p == '\0')
     20 			return NULL;
     21 		++*p;
     22 
     23 		if (_access(tmpl, F_OK) != 0)
     24 			break;
     25 	}
     26 	if (s)
     27 		strcpy(s, tmpl);
     28 	return tmpl;
     29 }