summaryrefslogtreecommitdiffstats
path: root/lib/tevent/tevent_util.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/tevent/tevent_util.c')
-rw-r--r--lib/tevent/tevent_util.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/tevent/tevent_util.c b/lib/tevent/tevent_util.c
new file mode 100644
index 0000000..7519e11
--- /dev/null
+++ b/lib/tevent/tevent_util.c
@@ -0,0 +1,77 @@
+/*
+ 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>
+
+/**
+ 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;
+}