1 #include <stdio.h>
2 #include <fcntl.h>
3 #include <errno.h>
4 #include <sys/stat.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <unsupported_api.h>
8 #include "syscall.h"
9 
10 #define MAXTRIES 100
11 
tmpnam(char *buf)12 char *tmpnam(char *buf)
13 {
14 	static char internal[L_tmpnam];
15 	char s[] = "/tmp/tmpnam_XXXXXX";
16 	int try;
17 	int r;
18 	UNSUPPORTED_API_VOID(LITEOS_A);
19 	for (try=0; try<MAXTRIES; try++) {
20 		__randname(s+12);
21 #ifdef SYS_readlink
22 		r = __syscall(SYS_readlink, s, (char[1]){0}, 1);
23 #else
24 		r = __syscall(SYS_readlinkat, AT_FDCWD, s, (char[1]){0}, 1);
25 #endif
26 		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
27 	}
28 	return 0;
29 }
30