svn commit: r192206 - in head/sys: amd64/linux32 compat/linux
i386/linux
Dmitry Chagin
dchagin at FreeBSD.org
Sat May 16 18:48:43 UTC 2009
Author: dchagin
Date: Sat May 16 18:48:41 2009
New Revision: 192206
URL: http://svn.freebsd.org/changeset/base/192206
Log:
Somewhere between 2.6.23 and 2.6.27, Linux added SOCK_CLOEXEC and
SOCK_NONBLOCK flags, that allow to save fcntl() calls.
Implement a variation of the socket() syscall which takes a flags
in addition to the type argument.
Approved by: kib (mentor)
MFC after: 1 month
Modified:
head/sys/amd64/linux32/linux.h
head/sys/compat/linux/linux_socket.c
head/sys/compat/linux/linux_socket.h
head/sys/i386/linux/linux.h
Modified: head/sys/amd64/linux32/linux.h
==============================================================================
--- head/sys/amd64/linux32/linux.h Sat May 16 18:46:51 2009 (r192205)
+++ head/sys/amd64/linux32/linux.h Sat May 16 18:48:41 2009 (r192206)
@@ -571,6 +571,7 @@ int linux_ioctl_unregister_handler(struc
#define LINUX_O_DIRECTORY 00200000 /* Must be a directory */
#define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */
#define LINUX_O_NOATIME 01000000
+#define LINUX_O_CLOEXEC 02000000
#define LINUX_F_DUPFD 0
#define LINUX_F_GETFD 1
Modified: head/sys/compat/linux/linux_socket.c
==============================================================================
--- head/sys/compat/linux/linux_socket.c Sat May 16 18:46:51 2009 (r192205)
+++ head/sys/compat/linux/linux_socket.c Sat May 16 18:48:41 2009 (r192206)
@@ -593,10 +593,13 @@ linux_socket(struct thread *td, struct l
int type;
int protocol;
} */ bsd_args;
- int retval_socket;
+ int retval_socket, socket_flags;
bsd_args.protocol = args->protocol;
- bsd_args.type = args->type;
+ socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK;
+ if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK))
+ return (EINVAL);
+ bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK;
if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX)
return (EINVAL);
bsd_args.domain = linux_to_bsd_domain(args->domain);
@@ -607,6 +610,23 @@ linux_socket(struct thread *td, struct l
if (retval_socket)
return (retval_socket);
+ if (socket_flags & LINUX_SOCK_NONBLOCK) {
+ retval_socket = kern_fcntl(td, td->td_retval[0],
+ F_SETFL, O_NONBLOCK);
+ if (retval_socket) {
+ (void)kern_close(td, td->td_retval[0]);
+ goto out;
+ }
+ }
+ if (socket_flags & LINUX_SOCK_CLOEXEC) {
+ retval_socket = kern_fcntl(td, td->td_retval[0],
+ F_SETFD, FD_CLOEXEC);
+ if (retval_socket) {
+ (void)kern_close(td, td->td_retval[0]);
+ goto out;
+ }
+ }
+
if (bsd_args.type == SOCK_RAW
&& (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0)
&& bsd_args.domain == PF_INET) {
@@ -642,6 +662,7 @@ linux_socket(struct thread *td, struct l
}
#endif
+out:
return (retval_socket);
}
Modified: head/sys/compat/linux/linux_socket.h
==============================================================================
--- head/sys/compat/linux/linux_socket.h Sat May 16 18:46:51 2009 (r192205)
+++ head/sys/compat/linux/linux_socket.h Sat May 16 18:48:41 2009 (r192206)
@@ -100,6 +100,13 @@
#define LINUX_SOCK_MAX LINUX_SOCK_SEQPACKET
+#define LINUX_SOCK_TYPE_MASK 0xf
+
+/* Flags for socket, socketpair, accept4 */
+
+#define LINUX_SOCK_CLOEXEC LINUX_O_CLOEXEC
+#define LINUX_SOCK_NONBLOCK LINUX_O_NONBLOCK
+
struct l_ucred {
uint32_t pid;
uint32_t uid;
Modified: head/sys/i386/linux/linux.h
==============================================================================
--- head/sys/i386/linux/linux.h Sat May 16 18:46:51 2009 (r192205)
+++ head/sys/i386/linux/linux.h Sat May 16 18:48:41 2009 (r192206)
@@ -547,6 +547,7 @@ int linux_ioctl_unregister_handler(struc
#define LINUX_O_DIRECTORY 00200000 /* Must be a directory */
#define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */
#define LINUX_O_NOATIME 01000000
+#define LINUX_O_CLOEXEC 02000000
#define LINUX_F_DUPFD 0
#define LINUX_F_GETFD 1
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