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-rw-r--r--linuxthreads/wrapsyscall.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/linuxthreads/wrapsyscall.c b/linuxthreads/wrapsyscall.c
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+/* 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))