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| | #include <stdio.h>
#include <fcntl.h>
#include "stdio_impl.h"
#include "pthread_impl.h"
#define MAXTRIES 100
char *__randname(char *);
FILE *tmpfile(void)
{
#ifdef O_TMPFILE
int fd;
FILE *f = 0;
fd = sys_open("/tmp", O_RDWR|O_TMPFILE);
if (fd >= 0) {
f = __fdopen(fd, "w+");
if (!f) __syscall(SYS_close, fd);
}
return f;
#else
char s[] = "/tmp/tmpfile_XXXXXX";
FILE *f = 0;
int fd;
int try;
sigset_t saved_mask;
pthread_sigmask(SIG_SETMASK, SIGALL_SET, &saved_mask);
for (try=0; try<MAXTRIES; try++) {
__randname(s+13);
fd = sys_open(s, O_RDWR|O_CREAT|O_EXCL, 0600);
if (fd >= 0) {
#ifdef SYS_unlink
__syscall(SYS_unlink, s);
#else
__syscall(SYS_unlinkat, AT_FDCWD, s, 0);
#endif
pthread_sigmask(SIG_SETMASK, &saved_mask, 0);
f = __fdopen(fd, "w+");
if (!f) __syscall(SYS_close, fd);
return f;
}
}
pthread_sigmask(SIG_SETMASK, &saved_mask, 0);
return 0;
#endif /*O_TMPFILE*/
}
LFS64(tmpfile);
|