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2004-10-29 Colin Walters <walters@redhat.com>

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* dbus/dbus-sysdeps.h (_dbus_become_daemon): Also take
	parameter for fd to write pid to.

	* dbus/dbus-sysdeps.c (_dbus_become_daemon): Implement it.

	* bus/bus.c (bus_context_new): Pass print_pid_fd
	to _dbus_become_daemon (bug #1720)
This commit is contained in:
Colin Walters 2004-10-29 19:59:15 +00:00
parent fbc29a8a78
commit e430788a6b
4 changed files with 52 additions and 1 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2004-10-29 Colin Walters <walters@redhat.com>
* dbus/dbus-sysdeps.h (_dbus_become_daemon): Also take
parameter for fd to write pid to.
* dbus/dbus-sysdeps.c (_dbus_become_daemon): Implement it.
* bus/bus.c (bus_context_new): Pass print_pid_fd
to _dbus_become_daemon (bug #1720)
2004-10-29 Colin Walters <walters@redhat.com>
Patch from Ed Catmur <ed@catmur.co.uk>

4
bus/bus.c
View file

@ -663,7 +663,9 @@ bus_context_new (const DBusString *config_file,
if (context->pidfile)
_dbus_string_init_const (&u, context->pidfile);
if (!_dbus_become_daemon (context->pidfile ? &u : NULL, error))
if (!_dbus_become_daemon (context->pidfile ? &u : NULL,
print_pid_fd,
error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
goto failed;

38
dbus/dbus-sysdeps.c
View file

@ -3131,11 +3131,13 @@ _dbus_print_backtrace (void)
* Does the chdir, fork, setsid, etc. to become a daemon process.
*
* @param pidfile #NULL, or pidfile to create
* @param print_pid_fd file descriptor to print pid to, or -1 for none
* @param error return location for errors
* @returns #FALSE on failure
*/
dbus_bool_t
_dbus_become_daemon (const DBusString *pidfile,
int print_pid_fd,
DBusError *error)
{
const char *s;
@ -3201,6 +3203,42 @@ _dbus_become_daemon (const DBusString *pidfile,
return FALSE;
}
}
/* Write PID if requested */
if (print_pid_fd >= 0)
{
DBusString pid;
int bytes;
if (!_dbus_string_init (&pid))
{
_DBUS_SET_OOM (error);
kill (child_pid, SIGTERM);
return FALSE;
}
if (!_dbus_string_append_int (&pid, _dbus_getpid ()) ||
!_dbus_string_append (&pid, "\n"))
{
_dbus_string_free (&pid);
_DBUS_SET_OOM (error);
kill (child_pid, SIGTERM);
return FALSE;
}
bytes = _dbus_string_get_length (&pid);
if (_dbus_write (print_pid_fd, &pid, 0, bytes) != bytes)
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"Printing message bus PID: %s\n",
_dbus_strerror (errno));
_dbus_string_free (&pid);
kill (child_pid, SIGTERM);
return FALSE;
}
_dbus_string_free (&pid);
}
_dbus_verbose ("parent exiting\n");
_exit (0);
break;

1
dbus/dbus-sysdeps.h
View file

@ -298,6 +298,7 @@ dbus_bool_t _dbus_close (int fd,
void _dbus_print_backtrace (void);
dbus_bool_t _dbus_become_daemon (const DBusString *pidfile,
int print_pid_fd,
DBusError *error);
dbus_bool_t _dbus_write_pid_file (const DBusString *filename,
unsigned long pid,