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authorMax Kellermann <max@duempel.org>2009-11-08 22:11:35 +0100
committerMax Kellermann <max@duempel.org>2009-11-08 22:11:35 +0100
commitf66edccffdc4a9276ae9dced69fa6fb74ee1f97e (patch)
tree3350b0852762cb393c12054e28c999532b4fd027 /src/fd_util.c
parentb043ade456818a414c726c8525bb8ec63658edc8 (diff)
downloadmpd-f66edccffdc4a9276ae9dced69fa6fb74ee1f97e.tar.gz
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fd_util: added O_NONBLOCK functions
Changed the wrappers for pipe(), socket(), accept(). On WIN32, this does not work for pipe().
Diffstat (limited to 'src/fd_util.c')
-rw-r--r--src/fd_util.c45
1 files changed, 38 insertions, 7 deletions
diff --git a/src/fd_util.c b/src/fd_util.c
index a8be69be7..2350596c4 100644
--- a/src/fd_util.c
+++ b/src/fd_util.c
@@ -68,6 +68,29 @@ fd_set_cloexec(int fd, bool enable)
#endif
}
+/**
+ * Enables non-blocking mode for the specified file descriptor. On
+ * WIN32, this function only works for sockets.
+ */
+static int
+fd_set_nonblock(int fd)
+{
+#ifdef WIN32
+ u_long val = 1;
+ return ioctlsocket(fd, FIONBIO, &val);
+#else
+ int flags;
+
+ assert(fd >= 0);
+
+ flags = fcntl(fd, F_GETFL);
+ if (flags < 0)
+ return flags;
+
+ return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+#endif
+}
+
int
open_cloexec(const char *path_fs, int flags)
{
@@ -108,7 +131,7 @@ creat_cloexec(const char *path_fs, int mode)
}
int
-pipe_cloexec(int fd[2])
+pipe_cloexec_nonblock(int fd[2])
{
#ifdef WIN32
return _pipe(event_pipe, 512, _O_BINARY);
@@ -116,7 +139,7 @@ pipe_cloexec(int fd[2])
int ret;
#ifdef HAVE_PIPE2
- ret = pipe2(fd, O_CLOEXEC);
+ ret = pipe2(fd, O_CLOEXEC|O_NONBLOCK);
if (ret >= 0 || errno != ENOSYS)
return ret;
#endif
@@ -125,6 +148,11 @@ pipe_cloexec(int fd[2])
if (ret >= 0) {
fd_set_cloexec(fd[0], true);
fd_set_cloexec(fd[1], true);
+
+#ifndef WIN32
+ fd_set_nonblock(fd[0]);
+ fd_set_nonblock(fd[1]);
+#endif
}
return ret;
@@ -132,12 +160,12 @@ pipe_cloexec(int fd[2])
}
int
-socket_cloexec(int domain, int type, int protocol)
+socket_cloexec_nonblock(int domain, int type, int protocol)
{
int fd;
-#ifdef SOCK_CLOEXEC
- fd = socket(domain, type | SOCK_CLOEXEC, protocol);
+#if defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK)
+ fd = socket(domain, type | SOCK_CLOEXEC | SOCK_NONBLOCK, protocol);
if (fd >= 0 || errno != EINVAL)
return fd;
#endif
@@ -150,13 +178,15 @@ socket_cloexec(int domain, int type, int protocol)
}
int
-accept_cloexec(int fd, struct sockaddr *address, size_t *address_length_r)
+accept_cloexec_nonblock(int fd, struct sockaddr *address,
+ size_t *address_length_r)
{
int ret;
socklen_t address_length = *address_length_r;
#ifdef HAVE_ACCEPT4
- ret = accept4(fd, address, &address_length, SOCK_CLOEXEC);
+ ret = accept4(fd, address, &address_length,
+ SOCK_CLOEXEC|SOCK_NONBLOCK);
if (ret >= 0 || errno != ENOSYS) {
if (ret >= 0)
*address_length_r = address_length;
@@ -168,6 +198,7 @@ accept_cloexec(int fd, struct sockaddr *address, size_t *address_length_r)
ret = accept(fd, address, &address_length);
if (ret >= 0) {
fd_set_cloexec(ret, true);
+ fd_set_nonblock(ret);
*address_length_r = address_length;
}