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fix r2417 bug that caused transmission-daemon to not daemonize

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This commit is contained in:
Charles Kerr 2007-07-27 02:25:28 +00:00
parent 9e266f6cbc
commit 44282a7be8
1 changed files with 48 additions and 23 deletions
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71
daemon/misc.c
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@ -28,6 +28,7 @@
#include <errno.h> #include <errno.h>
#include <fcntl.h> #include <fcntl.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdio.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
@ -208,32 +209,56 @@ readfile( const char * name, size_t * len )
int int
daemon( int nochdir, int noclose ) daemon( int nochdir, int noclose )
{ {
pid_t child; switch( fork( ) ) {
int null; case 0:
break;
child = fork(); case -1:
if( 0 > child ) fprintf( stderr, "Error daemonizing (fork)! %d - %s\n", errno, strerror(errno) );
return -1;
else if( 0 != child )
exit( 0 );
if( 0 > setsid() )
return -1;
if( !nochdir && 0 > chdir( "/" ) )
return -1;
if( !noclose )
{
null = open( "/dev/null", O_RDWR );
if( 0 > null )
return -1; return -1;
if( 0 > dup2( null, 0 ) || 0 > dup2( null, 1 ) || 0 > dup2( null, 2 ) ) default:
return -1; _exit(0);
close( null );
} }
return -1; if( setsid() < 0 ) {
fprintf( stderr, "Error daemonizing (setsid)! %d - %s\n", errno, strerror(errno) );
return -1;
}
switch( fork( ) ) {
case 0:
break;
case -1:
fprintf( stderr, "Error daemonizing (fork2)! %d - %s\n", errno, strerror(errno) );
return -1;
default:
_exit(0);
}
if( !nochdir && 0 > chdir( "/" ) ) {
fprintf( stderr, "Error daemonizing (chdir)! %d - %s\n", errno, strerror(errno) );
return -1;
}
if( !noclose ) {
int fd;
fd = open("/dev/null", O_RDONLY);
if( fd != 0 ) {
dup2( fd, 0 );
close( fd );
}
fd = open("/dev/null", O_WRONLY);
if( fd != 1 ) {
dup2( fd, 1 );
close( fd );
}
fd = open("/dev/null", O_WRONLY);
if( fd != 2 ) {
dup2( fd, 2 );
close( fd );
}
}
return 0;
} }
#endif #endif