2003-05-02 07:59:23 +04:00
|
|
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
|
|
*
|
|
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
|
|
* the License. You may obtain a copy of the License at
|
|
|
|
* http://www.mozilla.org/MPL/
|
|
|
|
*
|
|
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
|
|
* for the specific language governing rights and limitations under the
|
|
|
|
* License.
|
|
|
|
*
|
|
|
|
* The Original Code is mozilla.org code.
|
|
|
|
*
|
|
|
|
* The Initial Developer of the Original Code is
|
|
|
|
* Netscape Communications Corporation.
|
|
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
|
|
* the Initial Developer. All Rights Reserved.
|
|
|
|
*
|
|
|
|
* Contributor(s):
|
|
|
|
* Conrad Carlen <ccarlen@netscape.com>
|
|
|
|
* Brendan Eich <brendan@mozilla.org>
|
|
|
|
* Colin Blake <colin@theblakes.com>
|
|
|
|
* Javier Pedemonte <pedemont@us.ibm.com>
|
|
|
|
*
|
|
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
|
|
* the provisions above, a recipient may use your version of this file under
|
|
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
|
|
*
|
|
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
2004-05-26 22:46:42 +04:00
|
|
|
#include "nsProfileStringTypes.h"
|
2003-05-02 07:59:23 +04:00
|
|
|
#include "nsProfileLock.h"
|
2004-11-12 22:26:37 +03:00
|
|
|
#include "nsCOMPtr.h"
|
2003-05-02 07:59:23 +04:00
|
|
|
|
|
|
|
#if defined(XP_MAC) || defined(XP_MACOSX)
|
|
|
|
#include <Processes.h>
|
|
|
|
#include <CFBundle.h>
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef XP_UNIX
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <signal.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "prnetdb.h"
|
|
|
|
#include "prsystem.h"
|
|
|
|
#include "prprf.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef VMS
|
|
|
|
#include <rmsdef.h>
|
|
|
|
#endif
|
|
|
|
|
|
|
|
// **********************************************************************
|
|
|
|
// class nsProfileLock
|
2003-06-04 01:14:16 +04:00
|
|
|
//
|
|
|
|
// This code was moved from profile/src/nsProfileAccess.
|
2003-05-02 07:59:23 +04:00
|
|
|
// **********************************************************************
|
|
|
|
|
|
|
|
nsProfileLock::nsProfileLock() :
|
|
|
|
mHaveLock(PR_FALSE)
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_WIN)
|
2003-05-02 07:59:23 +04:00
|
|
|
,mLockFileHandle(INVALID_HANDLE_VALUE)
|
|
|
|
#elif defined (XP_OS2)
|
|
|
|
,mLockFileHandle(-1)
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
,mPidLockFileName(nsnull)
|
|
|
|
,mLockFileDesc(-1)
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
#if defined (XP_UNIX)
|
|
|
|
next = prev = this;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nsProfileLock::nsProfileLock(nsProfileLock& src)
|
|
|
|
{
|
|
|
|
*this = src;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nsProfileLock& nsProfileLock::operator=(nsProfileLock& rhs)
|
|
|
|
{
|
|
|
|
Unlock();
|
|
|
|
|
|
|
|
mHaveLock = rhs.mHaveLock;
|
|
|
|
rhs.mHaveLock = PR_FALSE;
|
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_WIN)
|
2003-05-02 07:59:23 +04:00
|
|
|
mLockFileHandle = rhs.mLockFileHandle;
|
|
|
|
rhs.mLockFileHandle = INVALID_HANDLE_VALUE;
|
|
|
|
#elif defined (XP_OS2)
|
|
|
|
mLockFileHandle = rhs.mLockFileHandle;
|
|
|
|
rhs.mLockFileHandle = -1;
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
mLockFileDesc = rhs.mLockFileDesc;
|
|
|
|
rhs.mLockFileDesc = -1;
|
|
|
|
mPidLockFileName = rhs.mPidLockFileName;
|
|
|
|
rhs.mPidLockFileName = nsnull;
|
|
|
|
if (mPidLockFileName)
|
|
|
|
{
|
|
|
|
// rhs had a symlink lock, therefore it was on the list.
|
|
|
|
PR_REMOVE_LINK(&rhs);
|
|
|
|
PR_APPEND_LINK(this, &mPidLockList);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return *this;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nsProfileLock::~nsProfileLock()
|
|
|
|
{
|
|
|
|
Unlock();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#if defined (XP_UNIX)
|
|
|
|
|
|
|
|
static int setupPidLockCleanup;
|
|
|
|
|
|
|
|
PRCList nsProfileLock::mPidLockList =
|
|
|
|
PR_INIT_STATIC_CLIST(&nsProfileLock::mPidLockList);
|
|
|
|
|
|
|
|
void nsProfileLock::RemovePidLockFiles()
|
|
|
|
{
|
|
|
|
while (!PR_CLIST_IS_EMPTY(&mPidLockList))
|
|
|
|
{
|
|
|
|
nsProfileLock *lock = NS_STATIC_CAST(nsProfileLock*, mPidLockList.next);
|
|
|
|
lock->Unlock();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sigaction SIGHUP_oldact;
|
|
|
|
static struct sigaction SIGINT_oldact;
|
|
|
|
static struct sigaction SIGQUIT_oldact;
|
|
|
|
static struct sigaction SIGILL_oldact;
|
|
|
|
static struct sigaction SIGABRT_oldact;
|
|
|
|
static struct sigaction SIGSEGV_oldact;
|
|
|
|
static struct sigaction SIGTERM_oldact;
|
|
|
|
|
|
|
|
void nsProfileLock::FatalSignalHandler(int signo)
|
|
|
|
{
|
|
|
|
// Remove any locks still held.
|
|
|
|
RemovePidLockFiles();
|
|
|
|
|
|
|
|
// Chain to the old handler, which may exit.
|
|
|
|
struct sigaction *oldact = nsnull;
|
|
|
|
|
|
|
|
switch (signo) {
|
|
|
|
case SIGHUP:
|
|
|
|
oldact = &SIGHUP_oldact;
|
|
|
|
break;
|
|
|
|
case SIGINT:
|
|
|
|
oldact = &SIGINT_oldact;
|
|
|
|
break;
|
|
|
|
case SIGQUIT:
|
|
|
|
oldact = &SIGQUIT_oldact;
|
|
|
|
break;
|
|
|
|
case SIGILL:
|
|
|
|
oldact = &SIGILL_oldact;
|
|
|
|
break;
|
|
|
|
case SIGABRT:
|
|
|
|
oldact = &SIGABRT_oldact;
|
|
|
|
break;
|
|
|
|
case SIGSEGV:
|
|
|
|
oldact = &SIGSEGV_oldact;
|
|
|
|
break;
|
|
|
|
case SIGTERM:
|
|
|
|
oldact = &SIGTERM_oldact;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
NS_NOTREACHED("bad signo");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-01-09 02:02:21 +03:00
|
|
|
if (oldact) {
|
|
|
|
if (oldact->sa_handler == SIG_DFL) {
|
|
|
|
// Make sure the default sig handler is executed
|
|
|
|
// We need it to get Mozilla to dump core.
|
|
|
|
sigaction(signo,oldact,NULL);
|
|
|
|
|
|
|
|
// Now that we've restored the default handler, unmask the
|
|
|
|
// signal and invoke it.
|
|
|
|
|
|
|
|
sigset_t unblock_sigs;
|
|
|
|
sigemptyset(&unblock_sigs);
|
|
|
|
sigaddset(&unblock_sigs, signo);
|
|
|
|
|
|
|
|
sigprocmask(SIG_UNBLOCK, &unblock_sigs, NULL);
|
|
|
|
|
|
|
|
raise(signo);
|
|
|
|
}
|
|
|
|
else if (oldact->sa_handler && oldact->sa_handler != SIG_IGN)
|
|
|
|
{
|
|
|
|
oldact->sa_handler(signo);
|
|
|
|
}
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
// Backstop exit call, just in case.
|
|
|
|
_exit(signo);
|
|
|
|
}
|
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
nsresult nsProfileLock::LockWithFcntl(const nsACString& lockFilePath)
|
|
|
|
{
|
2004-10-21 05:55:36 +04:00
|
|
|
nsresult rv = NS_OK;
|
|
|
|
|
|
|
|
mLockFileDesc = open(PromiseFlatCString(lockFilePath).get(),
|
|
|
|
O_WRONLY | O_CREAT | O_TRUNC, 0666);
|
|
|
|
if (mLockFileDesc != -1)
|
|
|
|
{
|
|
|
|
struct flock lock;
|
|
|
|
lock.l_start = 0;
|
|
|
|
lock.l_len = 0; // len = 0 means entire file
|
|
|
|
lock.l_type = F_WRLCK;
|
|
|
|
lock.l_whence = SEEK_SET;
|
|
|
|
if (fcntl(mLockFileDesc, F_SETLK, &lock) == -1)
|
|
|
|
{
|
|
|
|
close(mLockFileDesc);
|
|
|
|
mLockFileDesc = -1;
|
|
|
|
|
|
|
|
// With OS X, on NFS, errno == ENOTSUP
|
|
|
|
// XXX Check for that and return specific rv for it?
|
2003-06-04 01:14:16 +04:00
|
|
|
#ifdef DEBUG
|
2004-10-21 05:55:36 +04:00
|
|
|
printf("fcntl(F_SETLK) failed. errno = %d\n", errno);
|
2003-06-04 01:14:16 +04:00
|
|
|
#endif
|
2004-10-21 05:55:36 +04:00
|
|
|
if (errno == EAGAIN || errno == EACCES)
|
|
|
|
rv = NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
else
|
|
|
|
rv = NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
mHaveLock = PR_TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
NS_ERROR("Failed to open lock file.");
|
|
|
|
rv = NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
nsresult nsProfileLock::LockWithSymlink(const nsACString& lockFilePath)
|
|
|
|
{
|
2004-10-21 05:55:36 +04:00
|
|
|
nsresult rv;
|
|
|
|
|
|
|
|
struct in_addr inaddr;
|
|
|
|
inaddr.s_addr = htonl(INADDR_LOOPBACK);
|
|
|
|
|
|
|
|
char hostname[256];
|
|
|
|
PRStatus status = PR_GetSystemInfo(PR_SI_HOSTNAME, hostname, sizeof hostname);
|
|
|
|
if (status == PR_SUCCESS)
|
|
|
|
{
|
|
|
|
char netdbbuf[PR_NETDB_BUF_SIZE];
|
|
|
|
PRHostEnt hostent;
|
|
|
|
status = PR_GetHostByName(hostname, netdbbuf, sizeof netdbbuf, &hostent);
|
|
|
|
if (status == PR_SUCCESS)
|
|
|
|
memcpy(&inaddr, hostent.h_addr, sizeof inaddr);
|
|
|
|
}
|
|
|
|
|
|
|
|
char *signature =
|
|
|
|
PR_smprintf("%s:%lu", inet_ntoa(inaddr), (unsigned long)getpid());
|
|
|
|
const nsPromiseFlatCString& flat = PromiseFlatCString(lockFilePath);
|
|
|
|
const char *fileName = flat.get();
|
|
|
|
int symlink_rv, symlink_errno, tries = 0;
|
|
|
|
|
|
|
|
// use ns4.x-compatible symlinks if the FS supports them
|
|
|
|
while ((symlink_rv = symlink(signature, fileName)) < 0)
|
|
|
|
{
|
|
|
|
symlink_errno = errno;
|
|
|
|
if (symlink_errno != EEXIST)
|
|
|
|
break;
|
|
|
|
|
|
|
|
// the link exists; see if it's from this machine, and if
|
|
|
|
// so if the process is still active
|
|
|
|
char buf[1024];
|
|
|
|
int len = readlink(fileName, buf, sizeof buf - 1);
|
|
|
|
if (len > 0)
|
|
|
|
{
|
|
|
|
buf[len] = '\0';
|
|
|
|
char *colon = strchr(buf, ':');
|
|
|
|
if (colon)
|
|
|
|
{
|
|
|
|
*colon++ = '\0';
|
|
|
|
unsigned long addr = inet_addr(buf);
|
|
|
|
if (addr != (unsigned long) -1)
|
|
|
|
{
|
|
|
|
char *after = nsnull;
|
|
|
|
pid_t pid = strtol(colon, &after, 0);
|
|
|
|
if (pid != 0 && *after == '\0')
|
|
|
|
{
|
|
|
|
if (addr != inaddr.s_addr)
|
|
|
|
{
|
|
|
|
// Remote lock: give up even if stuck.
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// kill(pid,0) is a neat trick to check if a
|
|
|
|
// process exists
|
|
|
|
if (kill(pid, 0) == 0 || errno != ESRCH)
|
|
|
|
{
|
|
|
|
// Local process appears to be alive, ass-u-me it
|
|
|
|
// is another Mozilla instance, or a compatible
|
|
|
|
// derivative, that's currently using the profile.
|
|
|
|
// XXX need an "are you Mozilla?" protocol
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Lock seems to be bogus: try to claim it. Give up after a large
|
|
|
|
// number of attempts (100 comes from the 4.x codebase).
|
|
|
|
(void) unlink(fileName);
|
|
|
|
if (++tries > 100)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
PR_smprintf_free(signature);
|
|
|
|
signature = nsnull;
|
|
|
|
|
|
|
|
if (symlink_rv == 0)
|
|
|
|
{
|
|
|
|
// We exclusively created the symlink: record its name for eventual
|
|
|
|
// unlock-via-unlink.
|
|
|
|
rv = NS_OK;
|
|
|
|
mHaveLock = PR_TRUE;
|
|
|
|
mPidLockFileName = strdup(fileName);
|
|
|
|
if (mPidLockFileName)
|
|
|
|
{
|
|
|
|
PR_APPEND_LINK(this, &mPidLockList);
|
|
|
|
if (!setupPidLockCleanup++)
|
|
|
|
{
|
|
|
|
// Clean up on normal termination.
|
|
|
|
atexit(RemovePidLockFiles);
|
|
|
|
|
|
|
|
// Clean up on abnormal termination, using POSIX sigaction.
|
|
|
|
// Don't arm a handler if the signal is being ignored, e.g.,
|
|
|
|
// because mozilla is run via nohup.
|
|
|
|
struct sigaction act, oldact;
|
|
|
|
act.sa_handler = FatalSignalHandler;
|
|
|
|
act.sa_flags = 0;
|
|
|
|
sigfillset(&act.sa_mask);
|
2003-06-04 01:14:16 +04:00
|
|
|
|
|
|
|
#define CATCH_SIGNAL(signame) \
|
|
|
|
PR_BEGIN_MACRO \
|
2004-10-21 05:55:36 +04:00
|
|
|
if (sigaction(signame, NULL, &oldact) == 0 && \
|
|
|
|
oldact.sa_handler != SIG_IGN) \
|
|
|
|
{ \
|
|
|
|
sigaction(signame, &act, &signame##_oldact); \
|
|
|
|
} \
|
|
|
|
PR_END_MACRO
|
|
|
|
|
|
|
|
CATCH_SIGNAL(SIGHUP);
|
|
|
|
CATCH_SIGNAL(SIGINT);
|
|
|
|
CATCH_SIGNAL(SIGQUIT);
|
|
|
|
CATCH_SIGNAL(SIGILL);
|
|
|
|
CATCH_SIGNAL(SIGABRT);
|
|
|
|
CATCH_SIGNAL(SIGSEGV);
|
|
|
|
CATCH_SIGNAL(SIGTERM);
|
2003-06-04 01:14:16 +04:00
|
|
|
|
|
|
|
#undef CATCH_SIGNAL
|
2004-10-21 05:55:36 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (symlink_errno == EEXIST)
|
|
|
|
rv = NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
else
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#ifdef DEBUG
|
2004-10-21 05:55:36 +04:00
|
|
|
printf("symlink() failed. errno = %d\n", errno);
|
2003-06-04 01:14:16 +04:00
|
|
|
#endif
|
2004-10-21 05:55:36 +04:00
|
|
|
rv = NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
}
|
2003-05-02 07:59:23 +04:00
|
|
|
#endif /* XP_UNIX */
|
|
|
|
|
|
|
|
nsresult nsProfileLock::Lock(nsILocalFile* aFile)
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_MACOSX)
|
2003-05-02 07:59:23 +04:00
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, ".parentlock");
|
|
|
|
NS_NAMED_LITERAL_STRING(OLD_LOCKFILE_NAME, "parent.lock");
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
NS_NAMED_LITERAL_STRING(OLD_LOCKFILE_NAME, "lock");
|
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, ".parentlock");
|
|
|
|
#else
|
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, "parent.lock");
|
|
|
|
#endif
|
|
|
|
|
|
|
|
nsresult rv;
|
|
|
|
NS_ENSURE_STATE(!mHaveLock);
|
|
|
|
|
|
|
|
PRBool isDir;
|
|
|
|
rv = aFile->IsDirectory(&isDir);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
if (!isDir)
|
|
|
|
return NS_ERROR_FILE_NOT_DIRECTORY;
|
|
|
|
|
|
|
|
nsCOMPtr<nsILocalFile> lockFile;
|
|
|
|
rv = aFile->Clone((nsIFile **)((void **)getter_AddRefs(lockFile)));
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
rv = lockFile->Append(LOCKFILE_NAME);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined(XP_MACOSX)
|
|
|
|
// First, try locking using fcntl. It is more reliable on
|
|
|
|
// a local machine, but may not be supported by an NFS server.
|
2003-05-02 07:59:23 +04:00
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
2004-10-21 05:55:36 +04:00
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = LockWithFcntl(filePath);
|
|
|
|
if (NS_FAILED(rv) && (rv != NS_ERROR_FILE_ACCESS_DENIED))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// If that failed for any reason other than NS_ERROR_FILE_ACCESS_DENIED,
|
|
|
|
// assume we tried an NFS that does not support it. Now, try with symlink.
|
|
|
|
rv = LockWithSymlink(filePath);
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
if (NS_SUCCEEDED(rv))
|
2004-10-21 05:55:36 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// Check for the old-style lock used by pre-mozilla 1.3 builds.
|
|
|
|
// Those builds used an earlier check to prevent the application
|
|
|
|
// from launching if another instance was already running. Because
|
|
|
|
// of that, we don't need to create an old-style lock as well.
|
|
|
|
struct LockProcessInfo
|
|
|
|
{
|
|
|
|
ProcessSerialNumber psn;
|
|
|
|
unsigned long launchDate;
|
|
|
|
};
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
PRFileDesc *fd = nsnull;
|
|
|
|
PRInt32 ioBytes;
|
|
|
|
ProcessInfoRec processInfo;
|
|
|
|
LockProcessInfo lockProcessInfo;
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = lockFile->SetLeafName(OLD_LOCKFILE_NAME);
|
2003-05-02 07:59:23 +04:00
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = lockFile->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
ioBytes = PR_Read(fd, &lockProcessInfo, sizeof(LockProcessInfo));
|
|
|
|
PR_Close(fd);
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
if (ioBytes == sizeof(LockProcessInfo))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
processInfo.processAppSpec = nsnull;
|
|
|
|
processInfo.processName = nsnull;
|
|
|
|
processInfo.processInfoLength = sizeof(ProcessInfoRec);
|
|
|
|
if (::GetProcessInformation(&lockProcessInfo.psn, &processInfo) == noErr &&
|
|
|
|
processInfo.processLaunchDate == lockProcessInfo.launchDate)
|
|
|
|
{
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
else
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
NS_WARNING("Could not read lock file - ignoring lock");
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = NS_OK; // Don't propagate error from OpenNSPRFileDesc.
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
#elif defined(XP_WIN)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
mLockFileHandle = CreateFile(filePath.get(),
|
|
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
|
|
0, // no sharing - of course
|
|
|
|
nsnull,
|
|
|
|
OPEN_ALWAYS,
|
|
|
|
FILE_FLAG_DELETE_ON_CLOSE,
|
|
|
|
nsnull);
|
|
|
|
if (mLockFileHandle == INVALID_HANDLE_VALUE)
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
#elif defined(XP_OS2)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
ULONG ulAction = 0;
|
|
|
|
APIRET rc;
|
|
|
|
rc = DosOpen(filePath.get(),
|
|
|
|
&mLockFileHandle,
|
|
|
|
&ulAction,
|
|
|
|
0,
|
|
|
|
FILE_NORMAL,
|
|
|
|
OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS,
|
|
|
|
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE | OPEN_FLAGS_NOINHERIT,
|
|
|
|
0 );
|
|
|
|
if (rc != NO_ERROR)
|
|
|
|
{
|
|
|
|
mLockFileHandle = -1;
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
|
|
|
#elif defined(VMS)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
mLockFileDesc = open_noshr(filePath.get(), O_CREAT, 0666);
|
|
|
|
if (mLockFileDesc == -1)
|
|
|
|
{
|
|
|
|
if ((errno == EVMSERR) && (vaxc$errno == RMS$_FLK))
|
|
|
|
{
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
NS_ERROR("Failed to open lock file.");
|
|
|
|
return NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#elif defined(XP_UNIX)
|
2003-06-04 01:14:16 +04:00
|
|
|
nsCOMPtr<nsIFile> oldLockFile;
|
|
|
|
rv = aFile->Clone(getter_AddRefs(oldLockFile));
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = oldLockFile->Append(OLD_LOCKFILE_NAME);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = oldLockFile->GetNativePath(filePath);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// First, try the 4.x-compatible symlink technique, which works
|
|
|
|
// with NFS without depending on (broken or missing, too often)
|
|
|
|
// lockd.
|
|
|
|
rv = LockWithSymlink(filePath);
|
|
|
|
if (NS_FAILED(rv) && rv != NS_ERROR_FILE_ACCESS_DENIED)
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// If that failed with an error other than
|
|
|
|
// NS_ERROR_FILE_ACCESS_DENIED, symlinks aren't
|
|
|
|
// supported (for example, on Win32 SAMBA servers).
|
|
|
|
// Try locking with fcntl.
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
|
|
|
rv = LockWithFcntl(filePath);
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
2003-05-02 07:59:23 +04:00
|
|
|
#endif /* XP_UNIX */
|
|
|
|
|
|
|
|
mHaveLock = PR_TRUE;
|
|
|
|
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nsresult nsProfileLock::Unlock()
|
|
|
|
{
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
|
|
|
|
if (mHaveLock)
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_WIN)
|
2003-05-02 07:59:23 +04:00
|
|
|
if (mLockFileHandle != INVALID_HANDLE_VALUE)
|
|
|
|
{
|
|
|
|
CloseHandle(mLockFileHandle);
|
|
|
|
mLockFileHandle = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
#elif defined (XP_OS2)
|
|
|
|
if (mLockFileHandle != -1)
|
|
|
|
{
|
|
|
|
DosClose(mLockFileHandle);
|
|
|
|
mLockFileHandle = -1;
|
|
|
|
}
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
if (mPidLockFileName)
|
|
|
|
{
|
|
|
|
PR_REMOVE_LINK(this);
|
|
|
|
(void) unlink(mPidLockFileName);
|
|
|
|
free(mPidLockFileName);
|
|
|
|
mPidLockFileName = nsnull;
|
|
|
|
}
|
|
|
|
else if (mLockFileDesc != -1)
|
|
|
|
{
|
|
|
|
close(mLockFileDesc);
|
|
|
|
mLockFileDesc = -1;
|
|
|
|
// Don't remove it
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
mHaveLock = PR_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return rv;
|
|
|
|
}
|