masqmail

annotate src/dotlock.c @ 91:3e7136221104

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correct masqmail path in rmail script; remove docs on uninstall on install the correct path to the masqmail executable gets inserted into the rmail script now. now documentation, examples, and the templates are removed on uninstall. Empty directories are the only thing that may remain if one installs masqmail into an unusual path.
author meillo@marmaro.de
date Mon, 21 Jun 2010 09:40:16 +0200
parents 08114f7dcc23
children 41958685480d
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 2001 Oliver Kurth
meillo@0 3
meillo@0 4 This program is free software; you can redistribute it and/or modify
meillo@0 5 it under the terms of the GNU General Public License as published by
meillo@0 6 the Free Software Foundation; either version 2 of the License, or
meillo@0 7 (at your option) any later version.
meillo@0 8
meillo@0 9 This program is distributed in the hope that it will be useful,
meillo@0 10 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 12 GNU General Public License for more details.
meillo@0 13
meillo@0 14 You should have received a copy of the GNU General Public License
meillo@0 15 along with this program; if not, write to the Free Software
meillo@0 16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 17 */
meillo@0 18
meillo@0 19 #include <glib.h>
meillo@0 20 #include <unistd.h>
meillo@0 21 #include <fcntl.h>
meillo@0 22 #include <sys/stat.h>
meillo@0 23 #include <sys/types.h>
meillo@0 24 #include <syslog.h>
meillo@0 25 #include <errno.h>
meillo@0 26 #include <string.h>
meillo@0 27 #include <time.h>
meillo@0 28
meillo@0 29 #include "masqmail.h"
meillo@0 30 #include "dotlock.h"
meillo@0 31
meillo@10 32 gboolean
meillo@10 33 dot_lock(gchar * lock_name, gchar * hitch_name)
meillo@0 34 {
meillo@10 35 gboolean ok = FALSE;
meillo@10 36 int fd;
meillo@0 37
meillo@10 38 fd = open(hitch_name, O_WRONLY | O_CREAT | O_EXCL, 0);
meillo@10 39 if (fd != -1) {
meillo@10 40 struct stat stat_buf;
meillo@0 41
meillo@10 42 close(fd);
meillo@10 43 link(hitch_name, lock_name);
meillo@10 44 if (stat(hitch_name, &stat_buf) == 0) {
meillo@10 45 if (stat_buf.st_nlink == 2) {
meillo@10 46 unlink(hitch_name);
meillo@10 47 ok = TRUE;
meillo@10 48 } else {
meillo@10 49 if (stat(lock_name, &stat_buf) == 0) {
meillo@10 50 if ((time(NULL) - stat_buf.st_mtime) > MAX_LOCKAGE) {
meillo@10 51 /* remove lock if uncredibly old */
meillo@10 52 unlink(lock_name);
meillo@0 53
meillo@10 54 link(hitch_name, lock_name);
meillo@10 55 if (stat(hitch_name, &stat_buf) == 0) {
meillo@10 56 if (stat_buf.st_nlink == 2) {
meillo@10 57 unlink(hitch_name);
meillo@10 58 ok = TRUE;
meillo@10 59 }
meillo@10 60 }
meillo@10 61 }
meillo@10 62 }
meillo@10 63 }
meillo@10 64 }
meillo@10 65 if (!ok) {
meillo@10 66 unlink(hitch_name);
meillo@10 67 }
meillo@10 68 } else
meillo@10 69 logwrite(LOG_WARNING, "could not create lock file %s: %s\n", lock_name, strerror(errno));
meillo@0 70
meillo@10 71 return ok;
meillo@0 72 }
meillo@0 73
meillo@10 74 gboolean
meillo@10 75 dot_unlock(gchar * lock_name)
meillo@0 76 {
meillo@10 77 unlink(lock_name);
meillo@0 78
meillo@10 79 return TRUE;
meillo@0 80 }