diff options
Diffstat (limited to 'linuxthreads/wrapsyscall.c')
| -rw-r--r-- | linuxthreads/wrapsyscall.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/linuxthreads/wrapsyscall.c b/linuxthreads/wrapsyscall.c new file mode 100644 index 0000000000..4659692d56 --- /dev/null +++ b/linuxthreads/wrapsyscall.c @@ -0,0 +1,183 @@ +/* Wrapper arpund system calls to provide cancelation points. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <fcntl.h> +#include <pthread.h> +#include <unistd.h> +#include <stdarg.h> +#include <stddef.h> +#include <sys/resource.h> +#include <sys/wait.h> +#include <sys/socket.h> + + +#ifndef PIC +/* We need a hook to force this file to be linked in when static + libpthread is used. */ +const int __pthread_provide_wrappers = 0; +#endif + + +#define CANCELABLE_SYSCALL(res_type, name, param_list, params) \ +res_type __libc_##name param_list; \ +res_type \ +name param_list \ +{ \ + res_type result; \ + int oldtype; \ + pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \ + result = __libc_##name params; \ + pthread_setcanceltype (oldtype, NULL); \ + return result; \ +} + +#define CANCELABLE_SYSCALL_VA(res_type, name, param_list, params, last_arg) \ +res_type __libc_##name param_list; \ +res_type \ +name param_list \ +{ \ + res_type result; \ + int oldtype; \ + va_list ap; \ + pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \ + va_start (ap, last_arg); \ + result = __libc_##name params; \ + va_end (ap); \ + pthread_setcanceltype (oldtype, NULL); \ + return result; \ +} + + +/* close(2). */ +CANCELABLE_SYSCALL (int, close, (int fd), (fd)) +strong_alias (close, __close) + + +/* fcntl(2). */ +CANCELABLE_SYSCALL_VA (int, fcntl, (int fd, int cmd, ...), + (fd, cmd, va_arg (ap, long int)), cmd) +strong_alias (fcntl, __fcntl) + + +/* fsync(2). */ +CANCELABLE_SYSCALL (int, fsync, (int fd), (fd)) + + +/* lseek(2). */ +CANCELABLE_SYSCALL (off_t, lseek, (int fd, off_t offset, int whence), + (fd, offset, whence)) +strong_alias (lseek, __lseek) + + +/* msync(2). */ +CANCELABLE_SYSCALL (int, msync, (const void *start, size_t length, int flags), + (start, length, flags)) + + +/* nanosleep(2). */ +CANCELABLE_SYSCALL (int, nanosleep, (const struct timespec *requested_time, + struct timespec *remaining), + (requested_time, remaining)) + + +/* open(2). */ +CANCELABLE_SYSCALL_VA (int, open, (const char *pathname, int flags, ...), + (pathname, flags, va_arg (ap, mode_t)), flags) +strong_alias (open, __open) + + +/* pause(2). */ +CANCELABLE_SYSCALL (int, pause, (void), ()) + + +/* read(2). */ +CANCELABLE_SYSCALL (ssize_t, read, (int fd, void *buf, size_t count), + (fd, buf, count)) +strong_alias (read, __read) + + +/* system(3). */ +CANCELABLE_SYSCALL (int, system, (const char *line), (line)) + + +/* tcdrain(2). */ +CANCELABLE_SYSCALL (int, tcdrain, (int fd), (fd)) + + +/* wait(2). */ +CANCELABLE_SYSCALL (__pid_t, wait, (__WAIT_STATUS_DEFN stat_loc), (stat_loc)) +strong_alias (wait, __wait) + + +/* waitpid(2). */ +CANCELABLE_SYSCALL (__pid_t, waitpid, (__pid_t pid, int *stat_loc, + int options), + (pid, stat_loc, options)) + + +/* write(2). */ +CANCELABLE_SYSCALL (ssize_t, write, (int fd, const void *buf, size_t n), + (fd, buf, n)) +strong_alias (write, __write) + + +/* The following system calls are thread cancellation points specified + in XNS. */ + +/* accept(2). */ +CANCELABLE_SYSCALL (int, accept, (int fd, __SOCKADDR_ARG addr, + socklen_t *addr_len), + (fd, addr, addr_len)) + +/* connect(2). */ +CANCELABLE_SYSCALL (int, connect, (int fd, __CONST_SOCKADDR_ARG addr, + socklen_t len), + (fd, addr, len)) +strong_alias (connect, __connect) + +/* recv(2). */ +CANCELABLE_SYSCALL (int, recv, (int fd, __ptr_t buf, size_t n, int flags), + (fd, buf, n, flags)) + +/* recvfrom(2). */ +CANCELABLE_SYSCALL (int, recvfrom, (int fd, __ptr_t buf, size_t n, int flags, + __SOCKADDR_ARG addr, socklen_t *addr_len), + (fd, buf, n, flags, addr, addr_len)) + +/* recvmsg(2). */ +CANCELABLE_SYSCALL (int, recvmsg, (int fd, struct msghdr *message, int flags), + (fd, message, flags)) + +/* send(2). */ +CANCELABLE_SYSCALL (int, send, (int fd, const __ptr_t buf, size_t n, + int flags), + (fd, buf, n, flags)) +strong_alias (send, __send) + +/* sendmsg(2). */ +CANCELABLE_SYSCALL (int, sendmsg, (int fd, const struct msghdr *message, + int flags), + (fd, message, flags)) + +/* sendto(2). */ +CANCELABLE_SYSCALL (int, sendto, (int fd, const __ptr_t buf, size_t n, + int flags, __CONST_SOCKADDR_ARG addr, + socklen_t addr_len), + (fd, buf, n, flags, addr, addr_len)) |