compositor: work around missing SOCK_CLOEXEC
Android does not have SOCK_CLOEXEC, so implement a wrapper that falls
back.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
diff --git a/shared/os-compatibility.c b/shared/os-compatibility.c
new file mode 100644
index 0000000..b79aa1f
--- /dev/null
+++ b/shared/os-compatibility.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright © 2012 Collabora, Ltd.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "os-compatibility.h"
+
+static int
+set_cloexec_or_close(int fd)
+{
+ long flags;
+
+ if (fd == -1)
+ return -1;
+
+ flags = fcntl(fd, F_GETFD);
+ if (flags == -1)
+ goto err;
+
+ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
+ goto err;
+
+ return fd;
+
+err:
+ close(fd);
+ return -1;
+}
+
+int
+os_socketpair_cloexec(int domain, int type, int protocol, int *sv)
+{
+ int ret;
+
+#ifdef SOCK_CLOEXEC
+ ret = socketpair(domain, type | SOCK_CLOEXEC, protocol, sv);
+ if (ret == 0 || errno != EINVAL)
+ return ret;
+#endif
+
+ ret = socketpair(domain, type, protocol, sv);
+ if (ret < 0)
+ return ret;
+
+ sv[0] = set_cloexec_or_close(sv[0]);
+ sv[1] = set_cloexec_or_close(sv[1]);
+
+ if (sv[0] != -1 && sv[1] != -1)
+ return 0;
+
+ close(sv[0]);
+ close(sv[1]);
+ return -1;
+}
+