From ef65e97083363ffaeeb5fcf3a37d074b74eafb0d Mon Sep 17 00:00:00 2001 From: Carmelo Amoroso Date: Wed, 30 Jun 2010 08:32:15 +0200 Subject: libc: Handle cancellation in non multiplexed socket calls For those archs that provide non multiplexed socket calls it possible to implement the lib C wrappers without calling the multi-purpose __socketcall. For a subset of these functions that are cancellation point, it needs to correctly handle cancellation. Signed-off-by: Francesco Rundo Signed-off-by: Carmelo Amoroso --- libc/inet/socketcalls.c | 139 ++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 122 insertions(+), 17 deletions(-) (limited to 'libc/inet') diff --git a/libc/inet/socketcalls.c b/libc/inet/socketcalls.c index e4bdbcb59..42a5a563f 100644 --- a/libc/inet/socketcalls.c +++ b/libc/inet/socketcalls.c @@ -43,8 +43,21 @@ extern int __socketcall(int call, unsigned long *args) attribute_hidden; #ifdef L_accept extern __typeof(accept) __libc_accept; #ifdef __NR_accept -#define __NR___libc_accept __NR_accept -_syscall3(int, __libc_accept, int, call, struct sockaddr *, addr, socklen_t *,addrlen) +#define __NR___sys_accept __NR_accept +static +_syscall3(int, __sys_accept, int, call, struct sockaddr *, addr, socklen_t *,addrlen) +int __libc_accept(int s, struct sockaddr *addr, socklen_t * addrlen) +{ + if (SINGLE_THREAD_P) + return __sys_accept(s, addr, addrlen); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_accept(s, addr, addrlen); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) int __libc_accept(int s, struct sockaddr *addr, socklen_t * addrlen) { @@ -63,7 +76,6 @@ int __libc_accept(int s, struct sockaddr *addr, socklen_t * addrlen) LIBC_CANCEL_RESET (oldtype); return result; #endif - } #endif weak_alias(__libc_accept,accept) @@ -90,8 +102,21 @@ libc_hidden_def(bind) #ifdef L_connect extern __typeof(connect) __libc_connect; #ifdef __NR_connect -#define __NR___libc_connect __NR_connect -_syscall3(int, __libc_connect, int, sockfd, const struct sockaddr *, saddr, socklen_t, addrlen) +#define __NR___sys_connect __NR_connect +static +_syscall3(int, __sys_connect, int, sockfd, const struct sockaddr *, saddr, socklen_t, addrlen) +int __libc_connect(int sockfd, const struct sockaddr *saddr, socklen_t addrlen) +{ + if (SINGLE_THREAD_P) + return __sys_connect(sockfd, saddr, addrlen); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_connect(sockfd, saddr, addrlen); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) int __libc_connect(int sockfd, const struct sockaddr *saddr, socklen_t addrlen) { @@ -187,9 +212,22 @@ libc_hidden_def(listen) #ifdef L_recv extern __typeof(recv) __libc_recv; #ifdef __NR_recv -#define __NR___libc_recv __NR_recv -_syscall4(ssize_t, __libc_recv, int, sockfd, __ptr_t, buffer, size_t, len, +#define __NR___sys_recv __NR_recv +static +_syscall4(ssize_t, __sys_recv, int, sockfd, __ptr_t, buffer, size_t, len, int, flags) +ssize_t __libc_recv(int sockfd, __ptr_t buffer, size_t len, int flags) +{ + if (SINGLE_THREAD_P) + return __sys_recv(sockfd, buffer, len, flags); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_recv(sockfd, buffer, len, flags); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) /* recv, recvfrom added by bir7@leland.stanford.edu */ ssize_t __libc_recv(int sockfd, __ptr_t buffer, size_t len, int flags) @@ -224,9 +262,23 @@ libc_hidden_weak(recv) #ifdef L_recvfrom extern __typeof(recvfrom) __libc_recvfrom; #ifdef __NR_recvfrom -#define __NR___libc_recvfrom __NR_recvfrom -_syscall6(ssize_t, __libc_recvfrom, int, sockfd, __ptr_t, buffer, size_t, len, +#define __NR___sys_recvfrom __NR_recvfrom +static +_syscall6(ssize_t, __sys_recvfrom, int, sockfd, __ptr_t, buffer, size_t, len, int, flags, struct sockaddr *, to, socklen_t *, tolen) +ssize_t __libc_recvfrom(int sockfd, __ptr_t buffer, size_t len, int flags, + struct sockaddr *to, socklen_t * tolen) +{ + if (SINGLE_THREAD_P) + return __sys_recvfrom(sockfd, buffer, len, flags, to, tolen); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_recvfrom(sockfd, buffer, len, flags, to, tolen); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) /* recv, recvfrom added by bir7@leland.stanford.edu */ ssize_t __libc_recvfrom(int sockfd, __ptr_t buffer, size_t len, int flags, @@ -259,8 +311,21 @@ libc_hidden_weak(recvfrom) #ifdef L_recvmsg extern __typeof(recvmsg) __libc_recvmsg; #ifdef __NR_recvmsg -#define __NR___libc_recvmsg __NR_recvmsg -_syscall3(ssize_t, __libc_recvmsg, int, sockfd, struct msghdr *, msg, int, flags) +#define __NR___sys_recvmsg __NR_recvmsg +static +_syscall3(ssize_t, __sys_recvmsg, int, sockfd, struct msghdr *, msg, int, flags) +ssize_t __libc_recvmsg(int sockfd, struct msghdr *msg, int flags) +{ + if (SINGLE_THREAD_P) + return __sys_recvmsg(sockfd, msg, flags); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_recvmsg(sockfd, msg, flags); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) ssize_t __libc_recvmsg(int sockfd, struct msghdr *msg, int flags) { @@ -288,8 +353,21 @@ libc_hidden_weak(recvmsg) #ifdef L_send extern __typeof(send) __libc_send; #ifdef __NR_send -#define __NR___libc_send __NR_send -_syscall4(ssize_t, __libc_send, int, sockfd, const void *, buffer, size_t, len, int, flags) +#define __NR___sys_send __NR_send +static +_syscall4(ssize_t, __sys_send, int, sockfd, const void *, buffer, size_t, len, int, flags) +ssize_t __libc_send(int sockfd, const void *buffer, size_t len, int flags) +{ + if (SINGLE_THREAD_P) + return __sys_send(sockfd, buffer, len, flags); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_send(sockfd, buffer, len, flags); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) /* send, sendto added by bir7@leland.stanford.edu */ ssize_t __libc_send(int sockfd, const void *buffer, size_t len, int flags) @@ -311,6 +389,7 @@ ssize_t __libc_send(int sockfd, const void *buffer, size_t len, int flags) return result; #endif } + #elif defined(__NR_sendto) ssize_t __libc_send(int sockfd, const void *buffer, size_t len, int flags) { @@ -324,8 +403,21 @@ libc_hidden_weak(send) #ifdef L_sendmsg extern __typeof(sendmsg) __libc_sendmsg; #ifdef __NR_sendmsg -#define __NR___libc_sendmsg __NR_sendmsg -_syscall3(ssize_t, __libc_sendmsg, int, sockfd, const struct msghdr *, msg, int, flags) +#define __NR___sys_sendmsg __NR_sendmsg +static +_syscall3(ssize_t, __sys_sendmsg, int, sockfd, const struct msghdr *, msg, int, flags) +ssize_t __libc_sendmsg(int sockfd, const struct msghdr *msg, int flags) +{ + if (SINGLE_THREAD_P) + return __sys_sendmsg(sockfd, msg, flags); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_sendmsg(sockfd, msg, flags); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) ssize_t __libc_sendmsg(int sockfd, const struct msghdr *msg, int flags) { @@ -353,9 +445,22 @@ libc_hidden_weak(sendmsg) #ifdef L_sendto extern __typeof(sendto) __libc_sendto; #ifdef __NR_sendto -#define __NR___libc_sendto __NR_sendto -_syscall6(ssize_t, __libc_sendto, int, sockfd, const void *, buffer, +#define __NR___sys_sendto __NR_sendto +static +_syscall6(ssize_t, __sys_sendto, int, sockfd, const void *, buffer, size_t, len, int, flags, const struct sockaddr *, to, socklen_t, tolen) +ssize_t __libc_sendto(int sockfd, const void *buffer, size_t len, int flags,const struct sockaddr *to, socklen_t tolen) +{ + if (SINGLE_THREAD_P) + return __sys_sendto(sockfd, buffer, len, flags, to, tolen); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __sys_sendto(sockfd, buffer, len, flags, to, tolen); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #elif defined(__NR_socketcall) /* send, sendto added by bir7@leland.stanford.edu */ ssize_t __libc_sendto(int sockfd, const void *buffer, size_t len, int flags, -- cgit v1.2.3