+++ /dev/null
-/* $XConsortium: AuLock.c,v 1.15 94/04/17 20:15:43 rws Exp $ */
-/* $XFree86: xc/lib/Xau/AuLock.c,v 3.0 1994/10/20 06:04:31 dawes Exp $ */
-
-/*
-
-Copyright (c) 1988 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from the X Consortium.
-
-*/
-
-#include <X11/Xauth.h>
-#include <X11/Xos.h>
-#include <sys/stat.h>
-#include <errno.h>
-#if defined(X_NOT_STDC_ENV)
-extern int errno;
-#define Time_t long
-extern Time_t time ();
-#else
-#include <time.h>
-#define Time_t time_t
-#endif
-#ifndef X_NOT_POSIX
-#include <unistd.h>
-#else
-#ifndef WIN32
-extern unsigned sleep ();
-#else
-#define link rename
-#endif
-#endif
-#ifdef __EMX__
-#define link rename
-#endif
-
-#if NeedFunctionPrototypes
-int
-XauLockAuth (
-_Xconst char *file_name,
-int retries,
-int timeout,
-long dead)
-#else
-int
-XauLockAuth (file_name, retries, timeout, dead)
-char *file_name;
-int retries;
-int timeout;
-long dead;
-#endif
-{
- char creat_name[1025], link_name[1025];
- struct stat statb;
- Time_t now;
- int creat_fd = -1;
-
- if (strlen (file_name) > 1022)
- return LOCK_ERROR;
- (void) strcpy (creat_name, file_name);
- (void) strcat (creat_name, "-c");
- (void) strcpy (link_name, file_name);
- (void) strcat (link_name, "-l");
- if (stat (creat_name, &statb) != -1) {
- now = time ((Time_t *) 0);
- /*
- * NFS may cause ctime to be before now, special
- * case a 0 deadtime to force lock removal
- */
- if (dead == 0 || now - statb.st_ctime > dead) {
- (void) unlink (creat_name);
- (void) unlink (link_name);
- }
- }
-
- while (retries > 0) {
- if (creat_fd == -1) {
- creat_fd = creat (creat_name, 0666);
- if (creat_fd == -1) {
- if (errno != EACCES)
- return LOCK_ERROR;
- } else
- (void) close (creat_fd);
- }
- if (creat_fd != -1) {
- if (link (creat_name, link_name) != -1)
- return LOCK_SUCCESS;
- if (errno == ENOENT) {
- creat_fd = -1; /* force re-creat next time around */
- continue;
- }
- if (errno != EEXIST)
- return LOCK_ERROR;
- }
- (void) sleep ((unsigned) timeout);
- --retries;
- }
- return LOCK_TIMEOUT;
-}