146111Sbostic /*-
2*61180Sbostic * Copyright (c) 1990, 1993
3*61180Sbostic * The Regents of the University of California. All rights reserved.
446111Sbostic *
546111Sbostic * This code is derived from software contributed to Berkeley by
646111Sbostic * Chris Torek.
746111Sbostic *
846111Sbostic * %sccs.include.redist.c%
946111Sbostic */
1046111Sbostic
1146111Sbostic #if defined(LIBC_SCCS) && !defined(lint)
12*61180Sbostic static char sccsid[] = "@(#)tmpfile.c 8.1 (Berkeley) 06/04/93";
1346111Sbostic #endif /* LIBC_SCCS and not lint */
1446111Sbostic
1546559Sbostic #include <sys/types.h>
1646559Sbostic #include <signal.h>
1746611Sbostic #include <unistd.h>
1846559Sbostic #include <errno.h>
1946111Sbostic #include <stdio.h>
2046559Sbostic #include <paths.h>
2146111Sbostic
2246111Sbostic FILE *
tmpfile()2346111Sbostic tmpfile()
2446111Sbostic {
2546559Sbostic sigset_t set, oset;
2646111Sbostic FILE *fp;
2746559Sbostic int fd, sverrno;
2846559Sbostic #define TRAILER "tmp.XXXXXX"
2946559Sbostic char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
3046111Sbostic
3158451Storek (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
3258451Storek (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
3346559Sbostic
3449892Sbostic sigfillset(&set);
3546559Sbostic (void)sigprocmask(SIG_BLOCK, &set, &oset);
3646559Sbostic
3746559Sbostic fd = mkstemp(buf);
3846559Sbostic if (fd != -1)
3946559Sbostic (void)unlink(buf);
4046559Sbostic
4149892Sbostic (void)sigprocmask(SIG_SETMASK, &oset, NULL);
4246559Sbostic
4346559Sbostic if (fd == -1)
4449892Sbostic return (NULL);
4546559Sbostic
4658451Storek if ((fp = fdopen(fd, "w+")) == NULL) {
4746559Sbostic sverrno = errno;
4846559Sbostic (void)close(fd);
4946559Sbostic errno = sverrno;
5049892Sbostic return (NULL);
5146559Sbostic }
5249892Sbostic return (fp);
5346111Sbostic }
54