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[Qemu-devel] [PATCH] linux-user: improve target_to_host_sock_type conver
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From: |
Petar Jovanovic |
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Subject: |
[Qemu-devel] [PATCH] linux-user: improve target_to_host_sock_type conversion for MIPS |
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Date: |
Mon, 18 Mar 2013 23:47:05 +0100 |
From: Petar Jovanovic <address@hidden>
Previous implementation has failed to take into account different value of
SOCK_NONBLOCK on target (MIPS) and host, and existence of SOCK_CLOEXEC.
The same conversion has to be applied both for do_socket and do_socketpair,
so the code has been isolated in a static inline function.
It is defined for MIPS target only.
enum sock_type in linux-user/socket.h has been extended to include
TARGET_SOCK_CLOEXEC and TARGET_SOCK_NONBLOCK, similar to definition in libc.
The patch also includes necessary code style changes (tab to spaces) in the
header file in the MIPS #ifdef block touched by the change.
Signed-off-by: Petar Jovanovic <address@hidden>
---
linux-user/socket.h | 172 ++++++++++++++++++++++++++------------------------
linux-user/syscall.c | 45 ++++++++-----
2 files changed, 119 insertions(+), 98 deletions(-)
diff --git a/linux-user/socket.h b/linux-user/socket.h
index 339cae5..e4dfe56 100644
--- a/linux-user/socket.h
+++ b/linux-user/socket.h
@@ -1,91 +1,101 @@
#if defined(TARGET_MIPS)
- // MIPS special values for constants
-
- /*
- * For setsockopt(2)
- *
- * This defines are ABI conformant as far as Linux supports these ...
- */
- #define TARGET_SOL_SOCKET 0xffff
-
- #define TARGET_SO_DEBUG 0x0001 /* Record debugging information.
*/
- #define TARGET_SO_REUSEADDR 0x0004 /* Allow reuse of local
addresses. */
- #define TARGET_SO_KEEPALIVE 0x0008 /* Keep connections alive and
send
- SIGPIPE when they die. */
- #define TARGET_SO_DONTROUTE 0x0010 /* Don't do local routing. */
- #define TARGET_SO_BROADCAST 0x0020 /* Allow transmission of
- broadcast messages. */
- #define TARGET_SO_LINGER 0x0080 /* Block on close of a reliable
- socket to transmit pending data. */
- #define TARGET_SO_OOBINLINE 0x0100 /* Receive out-of-band data
in-band. */
- #if 0
- To add: #define TARGET_SO_REUSEPORT 0x0200 /* Allow local address
and port reuse. */
- #endif
-
- #define TARGET_SO_TYPE 0x1008 /* Compatible name for SO_STYLE.
*/
- #define TARGET_SO_STYLE SO_TYPE /* Synonym */
- #define TARGET_SO_ERROR 0x1007 /* get error status and clear */
- #define TARGET_SO_SNDBUF 0x1001 /* Send buffer size. */
- #define TARGET_SO_RCVBUF 0x1002 /* Receive buffer. */
- #define TARGET_SO_SNDLOWAT 0x1003 /* send low-water mark */
- #define TARGET_SO_RCVLOWAT 0x1004 /* receive low-water mark */
- #define TARGET_SO_SNDTIMEO 0x1005 /* send timeout */
- #define TARGET_SO_RCVTIMEO 0x1006 /* receive timeout */
- #define TARGET_SO_ACCEPTCONN 0x1009
-
- /* linux-specific, might as well be the same as on i386 */
- #define TARGET_SO_NO_CHECK 11
- #define TARGET_SO_PRIORITY 12
- #define TARGET_SO_BSDCOMPAT 14
+ /* MIPS special values for constants */
+
+ /*
+ * For setsockopt(2)
+ *
+ * This defines are ABI conformant as far as Linux supports these ...
+ */
+ #define TARGET_SOL_SOCKET 0xffff
+
+ #define TARGET_SO_DEBUG 0x0001 /* Record debugging information. */
+ #define TARGET_SO_REUSEADDR 0x0004 /* Allow reuse of local addresses.
*/
+ #define TARGET_SO_KEEPALIVE 0x0008 /* Keep connections alive and send
+ SIGPIPE when they die. */
+ #define TARGET_SO_DONTROUTE 0x0010 /* Don't do local routing. */
+ #define TARGET_SO_BROADCAST 0x0020 /* Allow transmission of
+ broadcast messages. */
+ #define TARGET_SO_LINGER 0x0080 /* Block on close of a reliable
+ * socket to transmit pending data.
+ */
+ #define TARGET_SO_OOBINLINE 0x0100 /* Receive out-of-band data in-band.
+ */
+ #if 0
+ /* To add: Allow local address and port reuse. */
+ #define TARGET_SO_REUSEPORT 0x0200
+ #endif
+
+ #define TARGET_SO_TYPE 0x1008 /* Compatible name for SO_STYLE. */
+ #define TARGET_SO_STYLE SO_TYPE /* Synonym */
+ #define TARGET_SO_ERROR 0x1007 /* get error status and clear */
+ #define TARGET_SO_SNDBUF 0x1001 /* Send buffer size. */
+ #define TARGET_SO_RCVBUF 0x1002 /* Receive buffer. */
+ #define TARGET_SO_SNDLOWAT 0x1003 /* send low-water mark */
+ #define TARGET_SO_RCVLOWAT 0x1004 /* receive low-water mark */
+ #define TARGET_SO_SNDTIMEO 0x1005 /* send timeout */
+ #define TARGET_SO_RCVTIMEO 0x1006 /* receive timeout */
+ #define TARGET_SO_ACCEPTCONN 0x1009
- #define TARGET_SO_PASSCRED 17
- #define TARGET_SO_PEERCRED 18
+ /* linux-specific, might as well be the same as on i386 */
+ #define TARGET_SO_NO_CHECK 11
+ #define TARGET_SO_PRIORITY 12
+ #define TARGET_SO_BSDCOMPAT 14
- /* Security levels - as per NRL IPv6 - don't actually do anything */
- #define TARGET_SO_SECURITY_AUTHENTICATION 22
- #define TARGET_SO_SECURITY_ENCRYPTION_TRANSPORT 23
- #define TARGET_SO_SECURITY_ENCRYPTION_NETWORK 24
+ #define TARGET_SO_PASSCRED 17
+ #define TARGET_SO_PEERCRED 18
+
+ /* Security levels - as per NRL IPv6 - don't actually do anything */
+ #define TARGET_SO_SECURITY_AUTHENTICATION 22
+ #define TARGET_SO_SECURITY_ENCRYPTION_TRANSPORT 23
+ #define TARGET_SO_SECURITY_ENCRYPTION_NETWORK 24
- #define TARGET_SO_BINDTODEVICE 25
+ #define TARGET_SO_BINDTODEVICE 25
- /* Socket filtering */
- #define TARGET_SO_ATTACH_FILTER 26
- #define TARGET_SO_DETACH_FILTER 27
+ /* Socket filtering */
+ #define TARGET_SO_ATTACH_FILTER 26
+ #define TARGET_SO_DETACH_FILTER 27
- #define TARGET_SO_PEERNAME 28
- #define TARGET_SO_TIMESTAMP 29
- #define SCM_TIMESTAMP SO_TIMESTAMP
-
- #define TARGET_SO_PEERSEC 30
- #define TARGET_SO_SNDBUFFORCE 31
- #define TARGET_SO_RCVBUFFORCE 33
-
- /** sock_type - Socket types
- *
- * Please notice that for binary compat reasons MIPS has to
- * override the enum sock_type in include/linux/net.h, so
- * we define ARCH_HAS_SOCKET_TYPES here.
- *
- * @SOCK_DGRAM - datagram (conn.less) socket
- * @SOCK_STREAM - stream (connection) socket
- * @SOCK_RAW - raw socket
- * @SOCK_RDM - reliably-delivered message
- * @SOCK_SEQPACKET - sequential packet socket
- * @SOCK_PACKET - linux specific way of getting packets at the dev
level.
- * For writing rarp and other similar things on the user
level.
- */
- enum sock_type {
- TARGET_SOCK_DGRAM = 1,
- TARGET_SOCK_STREAM = 2,
- TARGET_SOCK_RAW = 3,
- TARGET_SOCK_RDM = 4,
- TARGET_SOCK_SEQPACKET = 5,
- TARGET_SOCK_DCCP = 6,
- TARGET_SOCK_PACKET = 10,
- };
-
- #define TARGET_SOCK_MAX (SOCK_PACKET + 1)
+ #define TARGET_SO_PEERNAME 28
+ #define TARGET_SO_TIMESTAMP 29
+ #define SCM_TIMESTAMP SO_TIMESTAMP
+
+ #define TARGET_SO_PEERSEC 30
+ #define TARGET_SO_SNDBUFFORCE 31
+ #define TARGET_SO_RCVBUFFORCE 33
+
+ /** sock_type - Socket types
+ *
+ * Please notice that for binary compat reasons MIPS has to
+ * override the enum sock_type in include/linux/net.h, so
+ * we define ARCH_HAS_SOCKET_TYPES here.
+ *
+ * @SOCK_DGRAM - datagram (conn.less) socket
+ * @SOCK_STREAM - stream (connection) socket
+ * @SOCK_RAW - raw socket
+ * @SOCK_RDM - reliably-delivered message
+ * @SOCK_SEQPACKET - sequential packet socket
+ * @SOCK_DCCP - Datagram Congestion Control Protocol socket
+ * @SOCK_PACKET - linux specific way of getting packets at the dev level.
+ * For writing rarp and other similar things on the user
+ * level.
+ * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
+ * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
+ */
+ enum sock_type {
+ TARGET_SOCK_DGRAM = 1,
+ TARGET_SOCK_STREAM = 2,
+ TARGET_SOCK_RAW = 3,
+ TARGET_SOCK_RDM = 4,
+ TARGET_SOCK_SEQPACKET = 5,
+ TARGET_SOCK_DCCP = 6,
+ TARGET_SOCK_PACKET = 10,
+ TARGET_SOCK_CLOEXEC = 02000000,
+ TARGET_SOCK_NONBLOCK = 0200,
+ };
+
+ #define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
+ #define TARGET_SOCK_TYPE_MASK 0xf /* Covers up to TARGET_SOCK_MAX-1. */
#elif defined(TARGET_ALPHA)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index ee82a2d..0a9e6db 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1859,30 +1859,38 @@ static void unlock_iovec(struct iovec *vec, abi_ulong
target_addr,
free(vec);
}
-/* do_socket() Must return target values and target errnos. */
-static abi_long do_socket(int domain, int type, int protocol)
-{
#if defined(TARGET_MIPS)
- switch(type) {
+static inline void target_to_host_sock_type(int *type)
+{
+ int host_type = 0;
+ int target_type = *type;
+
+ switch (target_type & TARGET_SOCK_TYPE_MASK) {
case TARGET_SOCK_DGRAM:
- type = SOCK_DGRAM;
+ host_type = SOCK_DGRAM;
break;
case TARGET_SOCK_STREAM:
- type = SOCK_STREAM;
+ host_type = SOCK_STREAM;
break;
- case TARGET_SOCK_RAW:
- type = SOCK_RAW;
- break;
- case TARGET_SOCK_RDM:
- type = SOCK_RDM;
- break;
- case TARGET_SOCK_SEQPACKET:
- type = SOCK_SEQPACKET;
- break;
- case TARGET_SOCK_PACKET:
- type = SOCK_PACKET;
+ default:
+ host_type = target_type & TARGET_SOCK_TYPE_MASK;
break;
}
+ if (target_type & TARGET_SOCK_CLOEXEC) {
+ host_type |= SOCK_CLOEXEC;
+ }
+ if (target_type & TARGET_SOCK_NONBLOCK) {
+ host_type |= SOCK_NONBLOCK;
+ }
+ *type = host_type;
+}
+#endif
+
+/* do_socket() Must return target values and target errnos. */
+static abi_long do_socket(int domain, int type, int protocol)
+{
+#if defined(TARGET_MIPS)
+ target_to_host_sock_type(&type);
#endif
if (domain == PF_NETLINK)
return -EAFNOSUPPORT; /* do not NETLINK socket connections possible */
@@ -2116,6 +2124,9 @@ static abi_long do_socketpair(int domain, int type, int
protocol,
int tab[2];
abi_long ret;
+#if defined(TARGET_MIPS)
+ target_to_host_sock_type(&type);
+#endif
ret = get_errno(socketpair(domain, type, protocol, tab));
if (!is_error(ret)) {
if (put_user_s32(tab[0], target_tab_addr)
--
1.7.9.5
- [Qemu-devel] [PATCH] linux-user: improve target_to_host_sock_type conversion for MIPS,
Petar Jovanovic <=