This commit was manufactured by cvs2svn to create tagPRE_WDFCHANGES

'PRE_WDFCHANGES'.

svn path=/tags/PRE_WDFCHANGES/; revision=10430

1 files changed, 0 insertions, 329 deletions

diff --git a/camel/camel-lock-client.c b/camel/camel-lock-client.c
deleted file mode 100644
index d55bb5ff15..0000000000
--- a/camel/camel-lock-client.c
+++ /dev/null
@@ -1,329 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
- *
- * Copyright (C) 2001 Ximian Inc.
- *
- * Authors: Michael Zucchi <notzed@ximian.com>
- *
- * This program is free software; you can redistribute it and/or 
- * modify it under the terms of the GNU General Public License as 
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <errno.h>
-#include <string.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-#include <unistd.h>
-#include <fcntl.h>
-
-#ifdef ENABLE_THREADS
-#include <pthread.h>
-#endif
-
-#include "camel-exception.h"
-#include "camel-lock-helper.h"
-#include "camel-lock-client.h"
-
-#define d(x)
-
-/* dunno where this fucking thing is got from */
-/* see also camel-lock.c */
-#define _(x) (x)
-
-#ifdef ENABLE_THREADS
-static pthread_mutex_t lock_lock = PTHREAD_MUTEX_INITIALIZER;
-#define LOCK() pthread_mutex_lock(&lock_lock)
-#define UNLOCK() pthread_mutex_unlock(&lock_lock)
-#else
-#define LOCK()
-#define UNLOCK()
-#endif
-
-static int lock_sequence;
-static int lock_helper_pid = -1;
-static int lock_stdin_pipe[2], lock_stdout_pipe[2];
-
-static int read_n(int fd, void *buffer, int inlen)
-{
-	char *p = buffer;
-	int len, left = inlen;
-
-	do {
-		len = read(fd, p, left);
-		if (len == -1) {
-			if (errno != EINTR)
-				return -1;
-		} else {
-			left -= len;
-			p += len;
-		}
-	} while (left > 0 && len != 0);
-
-	return inlen - left;
-}
-
-static int write_n(int fd, void *buffer, int inlen)
-{
-	char *p = buffer;
-	int len, left = inlen;
-
-	do {
-		len = write(fd, p, left);
-		if (len == -1) {
-			if (errno != EINTR)
-				return -1;
-		} else {
-			left -= len;
-			p += len;
-		}
-	} while (left > 0);
-
-	return inlen;
-}
-
-static int camel_lock_helper_init(CamelException *ex)
-{
-	/* FIXME: check returns */
-	if (pipe(lock_stdin_pipe) == -1
-	    || pipe(lock_stdout_pipe) == -1) {
-		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
-				     _("Cannot build locking helper pipe: %s"),
-				     strerror(errno));
-	}
-
-	lock_helper_pid = fork();
-	switch(lock_helper_pid) {
-	case -1:
-		close(lock_stdin_pipe[0]);
-		close(lock_stdin_pipe[1]);
-		close(lock_stdout_pipe[0]);
-		close(lock_stdout_pipe[1]);
-		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
-				     _("Cannot fork locking helper: %s"),
-				     strerror(errno));
-		return -1;
-	case 0:
-		close(STDIN_FILENO);
-		dup(lock_stdin_pipe[0]);
-		close(STDOUT_FILENO);
-		dup(lock_stdout_pipe[1]);
-		close(lock_stdin_pipe[0]);
-		close(lock_stdin_pipe[1]);
-		close(lock_stdout_pipe[0]);
-		close(lock_stdout_pipe[1]);
-		execl(CAMEL_SBINDIR "/camel-lock-helper", "camel-lock-helper", NULL);
-		d(fprintf(stderr, "shit, couldn't exec lock helper!\n"));
-		/* it'll pick this up when it tries to use us */
-		exit(255);
-	default:
-		close(lock_stdin_pipe[0]);
-		close(lock_stdout_pipe[1]);
-
-		/* so the child knows when we vanish */
-		fcntl(lock_stdin_pipe[1], F_SETFD, FD_CLOEXEC);
-		fcntl(lock_stdout_pipe[0], F_SETFD, FD_CLOEXEC);
-	}
-
-	return 0;
-}
-
-int camel_lock_helper_lock(const char *path, CamelException *ex)
-{
-	struct _CamelLockHelperMsg *msg;
-	int len = strlen(path);
-	int res = -1;
-	int retry = 3;
-
-	LOCK();
-
-	if (lock_helper_pid == -1) {
-		if (camel_lock_helper_init(ex) == -1) {
-			UNLOCK();
-			return -1;
-		}
-	}
-
-	msg = alloca(len + sizeof(*msg));
-again:
-	msg->magic = CAMEL_LOCK_HELPER_MAGIC;
-	msg->seq = lock_sequence;
-	msg->id = CAMEL_LOCK_HELPER_LOCK;
-	msg->data = len;
-	memcpy(msg+1, path, len);
-
-	write_n(lock_stdin_pipe[1], msg, len+sizeof(*msg));
-
-	do {
-		/* should also have a timeout here?  cancellation? */
-		len = read_n(lock_stdout_pipe[0], msg, sizeof(*msg));
-		if (len == 0) {
-			/* child quit, do we try ressurect it? */
-			res = CAMEL_LOCK_HELPER_STATUS_PROTOCOL;
-			/* if the child exited, this should get it, waidpid returns 0 if the child hasn't */
-			if (waitpid(lock_helper_pid, NULL, WNOHANG) > 0) {
-				lock_helper_pid = -1;
-				close(lock_stdout_pipe[0]);
-				close(lock_stdin_pipe[1]);
-				lock_stdout_pipe[0] = -1;
-				lock_stdin_pipe[1] = -1;
-			}
-			goto fail;
-		}
-
-		if (msg->magic != CAMEL_LOCK_HELPER_RETURN_MAGIC
-		    || msg->seq > lock_sequence) {
-			res = CAMEL_LOCK_HELPER_STATUS_PROTOCOL;
-			d(printf("lock child protocol error\n"));
-			camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
-					     _("Could not lock '%s': protocol error with lock-helper"), path);
-			goto fail;
-		}
-	} while (msg->seq < lock_sequence);
-
-	if (msg->seq == lock_sequence) {
-		switch(msg->id) {
-		case CAMEL_LOCK_HELPER_STATUS_OK:
-			d(printf("lock child locked ok, id is %d\n", msg->data));
-			res = msg->data;
-			break;
-		default:
-			camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
-					     _("Could not lock '%s'"), path);
-			d(printf("locking failed ! status = %d\n", msg->id));
-			break;
-		}
-	} else if (retry > 0) {
-		d(printf("sequence failure, lost message? retry?\n"));
-		retry--;
-		goto again;
-	} else {
-		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
-				     _("Could not lock '%s': protocol error with lock-helper"), path);
-	}
-
-fail:
-	lock_sequence++;
-
-	UNLOCK();
-
-	return res;
-}
-
-int camel_lock_helper_unlock(int lockid)
-{
-	struct _CamelLockHelperMsg *msg;
-	int res = -1;
-	int retry = 3;
-	int len;
-
-	d(printf("unlocking lock id %d\n", lockid));
-
-	LOCK();
-
-	/* impossible to unlock if we haven't locked yet */
-	if (lock_helper_pid == -1) {
-		UNLOCK();
-		return -1;
-	}
-
-	msg = alloca(sizeof(*msg));
-again:
-	msg->magic = CAMEL_LOCK_HELPER_MAGIC;
-	msg->seq = lock_sequence;
-	msg->id = CAMEL_LOCK_HELPER_UNLOCK;
-	msg->data = lockid;
-
-	write_n(lock_stdin_pipe[1], msg, sizeof(*msg));
-
-	do {
-		/* should also have a timeout here?  cancellation? */
-		len = read_n(lock_stdout_pipe[0], msg, sizeof(*msg));
-		if (len == 0) {
-			/* child quit, do we try ressurect it? */
-			res = CAMEL_LOCK_HELPER_STATUS_PROTOCOL;
-			if (waitpid(lock_helper_pid, NULL, WNOHANG) > 0) {
-				lock_helper_pid = -1;
-				close(lock_stdout_pipe[0]);
-				close(lock_stdin_pipe[1]);
-				lock_stdout_pipe[0] = -1;
-				lock_stdin_pipe[1] = -1;
-			}
-			goto fail;
-		}
-
-		if (msg->magic != CAMEL_LOCK_HELPER_RETURN_MAGIC
-		    || msg->seq > lock_sequence) {
-			goto fail;
-		}
-	} while (msg->seq < lock_sequence);
-
-	if (msg->seq == lock_sequence) {
-		switch(msg->id) {
-		case CAMEL_LOCK_HELPER_STATUS_OK:
-			d(printf("lock child unlocked ok\n"));
-			res = 0;
-			break;
-		default:
-			d(printf("locking failed ! \n"));
-			break;
-		}
-	} else if (retry > 0) {
-		d(printf("sequence failure, lost message? retry?\n"));
-		lock_sequence++;
-		retry--;
-		goto again;
-	}
-
-fail:
-	lock_sequence++;
-
-	UNLOCK();
-
-	return res;
-}
-
-#if 0
-int main(int argc, char **argv)
-{
-	int id1, id2;
-
-	d(printf("locking started\n"));
-	camel_lock_helper_init();
-
-	id1 = camel_lock_helper_lock("1 path 1");
-	if (id1 != -1) {
-		d(printf("lock ok, unlock\n"));
-		camel_lock_helper_unlock(id1);
-	}
-
-	id1 = camel_lock_helper_lock("2 path 1");
-	id2 = camel_lock_helper_lock("2 path 2");
-	camel_lock_helper_unlock(id2);
-	camel_lock_helper_unlock(id1);
-
-	id1 = camel_lock_helper_lock("3 path 1");
-	id2 = camel_lock_helper_lock("3 path 2");
-	camel_lock_helper_unlock(id1);
-}
-#endif