Annotation of prex-old/usr/lib/libc/stdio/tmpfile.c, Revision 1.1
1.1 ! nbrk 1: /*-
! 2: * Copyright (c) 1990, 1993
! 3: * The Regents of the University of California. All rights reserved.
! 4: *
! 5: * This code is derived from software contributed to Berkeley by
! 6: * Chris Torek.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: */
! 32:
! 33: #include <sys/types.h>
! 34: #include <signal.h>
! 35: #include <unistd.h>
! 36: #include <errno.h>
! 37: #include <stdio.h>
! 38: #include <string.h>
! 39: #include <paths.h>
! 40:
! 41: FILE *
! 42: tmpfile()
! 43: {
! 44: sigset_t set, oset;
! 45: FILE *fp;
! 46: int fd, sverrno;
! 47: #define TRAILER "tmp.XXXXXX"
! 48: char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
! 49:
! 50: (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
! 51: (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
! 52:
! 53: sigfillset(&set);
! 54: (void)sigprocmask(SIG_BLOCK, &set, &oset);
! 55:
! 56: fd = mkstemp(buf);
! 57: if (fd != -1)
! 58: (void)unlink(buf);
! 59:
! 60: (void)sigprocmask(SIG_SETMASK, &oset, NULL);
! 61:
! 62: if (fd == -1)
! 63: return (NULL);
! 64:
! 65: if ((fp = fdopen(fd, "w+")) == NULL) {
! 66: sverrno = errno;
! 67: (void)close(fd);
! 68: errno = sverrno;
! 69: return (NULL);
! 70: }
! 71: return (fp);
! 72: }
CVSweb