mirror of
https://github.com/samba-team/samba.git
synced 2024-12-23 17:34:34 +03:00
158b208dfd
If an application using libtevent starts a new process the epoll file descriptor is leaked to the new process if the event context is not freed explicitly. By setting FD_CLOEXEC this is not needed anymore. Signed-off-by: Simo Sorce <idra@samba.org>
108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
Copyright (C) Andrew Tridgell 2005
|
|
Copyright (C) Jelmer Vernooij 2005
|
|
|
|
** NOTE! The following LGPL license applies to the tevent
|
|
** library. This does NOT imply that all of Samba is released
|
|
** under the LGPL
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 3 of the License, or (at your option) any later version.
|
|
|
|
This library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "replace.h"
|
|
#include "talloc.h"
|
|
#include "tevent.h"
|
|
#include "tevent_internal.h"
|
|
#include "tevent_util.h"
|
|
#include <fcntl.h>
|
|
|
|
/**
|
|
return the number of elements in a string list
|
|
*/
|
|
size_t ev_str_list_length(const char **list)
|
|
{
|
|
size_t ret;
|
|
for (ret=0;list && list[ret];ret++) /* noop */ ;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
add an entry to a string list
|
|
*/
|
|
const char **ev_str_list_add(const char **list, const char *s)
|
|
{
|
|
size_t len = ev_str_list_length(list);
|
|
const char **ret;
|
|
|
|
ret = talloc_realloc(NULL, list, const char *, len+2);
|
|
if (ret == NULL) return NULL;
|
|
|
|
ret[len] = talloc_strdup(ret, s);
|
|
if (ret[len] == NULL) return NULL;
|
|
|
|
ret[len+1] = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/**
|
|
Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
|
|
else
|
|
if SYSV use O_NDELAY
|
|
if BSD use FNDELAY
|
|
**/
|
|
|
|
int ev_set_blocking(int fd, bool set)
|
|
{
|
|
int val;
|
|
#ifdef O_NONBLOCK
|
|
#define FLAG_TO_SET O_NONBLOCK
|
|
#else
|
|
#ifdef SYSV
|
|
#define FLAG_TO_SET O_NDELAY
|
|
#else /* BSD */
|
|
#define FLAG_TO_SET FNDELAY
|
|
#endif
|
|
#endif
|
|
|
|
if((val = fcntl(fd, F_GETFL, 0)) == -1)
|
|
return -1;
|
|
if(set) /* Turn blocking on - ie. clear nonblock flag */
|
|
val &= ~FLAG_TO_SET;
|
|
else
|
|
val |= FLAG_TO_SET;
|
|
return fcntl( fd, F_SETFL, val);
|
|
#undef FLAG_TO_SET
|
|
}
|
|
|
|
bool ev_set_close_on_exec(int fd)
|
|
{
|
|
#ifdef FD_CLOEXEC
|
|
int val;
|
|
|
|
val = fcntl(fd, F_GETFD, 0);
|
|
if (val >= 0) {
|
|
val |= FD_CLOEXEC;
|
|
val = fcntl(fd, F_SETFD, val);
|
|
if (val != -1) {
|
|
return true;
|
|
}
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|