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Use NSTask to run as daemon

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@20672 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-Macdonald 2005-02-08 11:54:25 +00:00
parent df49274a8d
commit 38df9be337
2 changed files with 41 additions and 96 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2005-02-08 Richard Frith-Macdonald <rfm@gnu.org>
* Tools/gpbs.m: Use NSTask to re-execute as daemon.
2005-02-05 00:44 Alexander Malmberg <alexander@malmberg.org>
* Source/art/path.m (-_clip_add_svp:): Handle the case where

133
Tools/gpbs.m
View file

@ -43,7 +43,7 @@
#define NSIG 32
#endif
static int is_daemon = 0; /* Currently running as daemon. */
static BOOL is_daemon = NO; /* Currently running as daemon. */
static char ebuf[2048];
#ifdef HAVE_SYSLOG
@ -1125,11 +1125,14 @@ ihandler(int sig)
static void
init(int argc, char** argv, char **env)
{
NSUserDefaults *defs;
NSArray *args = [[NSProcessInfo processInfo] arguments];
unsigned count, c;
BOOL shouldFork = YES;
NSUserDefaults *defs;
NSProcessInfo *pInfo;
NSMutableArray *args;
unsigned count;
BOOL shouldFork = YES;
pInfo = [NSProcessInfo processInfo];
args = AUTORELEASE([[pInfo arguments] mutableCopy]);
for (count = 1; count < [args count]; count++)
{
NSString *a = [args objectAtIndex: count];
@ -1143,6 +1146,11 @@ init(int argc, char** argv, char **env)
printf("--verbose\tMore verbose debug output\n");
exit(EXIT_SUCCESS);
}
else if ([a isEqualToString: @"--daemon"] == YES)
{
is_daemon = YES;
shouldFork = NO;
}
else if ([a isEqualToString: @"--no-fork"] == YES)
{
shouldFork = NO;
@ -1184,105 +1192,38 @@ init(int argc, char** argv, char **env)
if (shouldFork == YES)
{
char **a = malloc((argc+2) * sizeof(char*));
NSFileHandle *null;
NSTask *t;
memcpy(a, argv, argc*sizeof(char*));
a[argc] = "--no-fork";
a[argc+1] = 0;
/*
* Now fork off child process to run in background.
*/
#ifdef __MINGW__
if (_spawnv(_P_NOWAIT, argv[0], a) == -1)
t = [NSTask new];
NS_DURING
{
fprintf(stderr, "gpbs - spawn failed - bye.\n");
exit(EXIT_FAILURE);
[args addObject: @"--daemon"];
[t setLaunchPath: [[NSBundle mainBundle] executablePath]];
[t setArguments: args];
[t setEnvironment: [pInfo environment]];
null = [NSFileHandle fileHandleWithNullDevice];
[t setStandardInput: null];
[t setStandardOutput: null];
[t setStandardError: null];
[t launch];
DESTROY(t);
}
exit(EXIT_SUCCESS);
#else
is_daemon = 1;
switch (fork())
NS_HANDLER
{
case -1:
NSLog(@"gpbs - fork failed - bye.\n");
exit(1);
case 0:
/*
* Try to run in background.
*/
#ifdef NeXT
setpgrp(0, getpid());
#else
setsid();
#endif
break;
default:
if (verbose)
{
NSLog(@"Process backgrounded (running as daemon)\r\n");
}
exit(EXIT_SUCCESS);
}
/*
* Ensure we don't have any open file descriptors which may refer
* to sockets bound to ports we may try to use.
*
* Use '/dev/null' for stdin and stdout.
*/
for (c = 0; c < FD_SETSIZE; c++)
{
if (is_daemon || (c != 2))
{
(void)close(c);
}
}
if (open("/dev/null", O_RDONLY) != 0)
{
sprintf(ebuf, "failed to open stdin from /dev/null (%s)\n",
strerror(errno));
gpbs_log(LOG_CRIT);
exit(EXIT_FAILURE);
DESTROY(t);
}
if (open("/dev/null", O_WRONLY) != 1)
{
sprintf(ebuf, "failed to open stdout from /dev/null (%s)\n",
strerror(errno));
gpbs_log(LOG_CRIT);
exit(EXIT_FAILURE);
}
if (is_daemon && open("/dev/null", O_WRONLY) != 2)
{
sprintf(ebuf, "failed to open stderr from /dev/null (%s)\n",
strerror(errno));
gpbs_log(LOG_CRIT);
exit(EXIT_FAILURE);
}
/*
* Try to re-execute the program in case we are running using the
* pth library (which would be messed up by having closed descriptors).
*/
if ([[NSBundle mainBundle] executablePath] != nil)
{
execve([[[NSBundle mainBundle] executablePath] cString], a, env);
sprintf(ebuf, "failed to exec to '%s' (%s)\n",
argv[0], strerror(errno));
gpbs_log(LOG_CRIT);
exit(EXIT_FAILURE);
}
#endif
NS_ENDHANDLER
exit(EXIT_FAILURE);
}
/*
* Make gpbs logging go to syslog unless overridden by user.
*/
defs = [NSUserDefaults standardUserDefaults];
[defs registerDefaults: [NSDictionary dictionaryWithObjectsAndKeys:
@"YES", @"GSLogSyslog", nil]];
/*
* Make gpbs logging go to syslog unless overridden by user.
*/
defs = [NSUserDefaults standardUserDefaults];
[defs registerDefaults: [NSDictionary dictionaryWithObjectsAndKeys:
@"YES", @"GSLogSyslog", nil]];
}