1 /* Wrapper arpund system calls to provide cancelation points.
2 Copyright (C) 1996-1999,2000-2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
29 #include <sys/resource.h>
31 #include <sys/socket.h>
35 /* We need a hook to force this file to be linked in when static
36 libpthread is used. */
37 const int __pthread_provide_wrappers
= 0;
41 #define CANCELABLE_SYSCALL(res_type, name, param_list, params) \
42 res_type __libc_##name param_list; \
44 __attribute__ ((weak)) \
49 pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
50 result = __libc_##name params; \
51 pthread_setcanceltype (oldtype, NULL); \
55 #define CANCELABLE_SYSCALL_VA(res_type, name, param_list, params, last_arg) \
56 res_type __libc_##name param_list; \
58 __attribute__ ((weak)) \
64 pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
65 va_start (ap, last_arg); \
66 result = __libc_##name params; \
68 pthread_setcanceltype (oldtype, NULL); \
72 #define PROMOTE_INTEGRAL_TYPE(type) __typeof__ ((type) 0 + 0)
76 CANCELABLE_SYSCALL (int, close
, (int fd
), (fd
))
77 strong_alias (close
, __close
)
81 CANCELABLE_SYSCALL_VA (int, fcntl
, (int fd
, int cmd
, ...),
82 (fd
, cmd
, va_arg (ap
, long int)), cmd
)
83 strong_alias (fcntl
, __fcntl
)
87 CANCELABLE_SYSCALL (int, fsync
, (int fd
), (fd
))
91 CANCELABLE_SYSCALL (off_t
, lseek
, (int fd
, off_t offset
, int whence
),
93 strong_alias (lseek
, __lseek
)
97 CANCELABLE_SYSCALL (off64_t
, lseek64
, (int fd
, off64_t offset
, int whence
),
102 CANCELABLE_SYSCALL (int, msync
, (__ptr_t addr
, size_t length
, int flags
),
103 (addr
, length
, flags
))
107 CANCELABLE_SYSCALL (int, nanosleep
, (const struct timespec
*requested_time
,
108 struct timespec
*remaining
),
109 (requested_time
, remaining
))
110 strong_alias (nanosleep
, __nanosleep
)
114 CANCELABLE_SYSCALL_VA (int, open
, (const char *pathname
, int flags
, ...),
116 va_arg (ap
, PROMOTE_INTEGRAL_TYPE (mode_t
))),
118 strong_alias (open
, __open
)
122 CANCELABLE_SYSCALL_VA (int, open64
, (const char *pathname
, int flags
, ...),
124 va_arg (ap
, PROMOTE_INTEGRAL_TYPE (mode_t
))),
126 strong_alias (open64
, __open64
)
130 CANCELABLE_SYSCALL (int, pause
, (void), ())
134 CANCELABLE_SYSCALL (ssize_t
, pread
, (int fd
, void *buf
, size_t count
,
136 (fd
, buf
, count
, offset
))
140 CANCELABLE_SYSCALL (ssize_t
, pread64
, (int fd
, void *buf
, size_t count
,
142 (fd
, buf
, count
, offset
))
143 strong_alias (pread64
, __pread64
)
147 CANCELABLE_SYSCALL (ssize_t
, pwrite
, (int fd
, const void *buf
, size_t n
,
149 (fd
, buf
, n
, offset
))
153 CANCELABLE_SYSCALL (ssize_t
, pwrite64
, (int fd
, const void *buf
, size_t n
,
155 (fd
, buf
, n
, offset
))
156 strong_alias (pwrite64
, __pwrite64
)
160 CANCELABLE_SYSCALL (ssize_t
, read
, (int fd
, void *buf
, size_t count
),
162 strong_alias (read
, __read
)
166 CANCELABLE_SYSCALL (int, system
, (const char *line
), (line
))
170 CANCELABLE_SYSCALL (int, tcdrain
, (int fd
), (fd
))
174 CANCELABLE_SYSCALL (__pid_t
, wait
, (__WAIT_STATUS_DEFN stat_loc
), (stat_loc
))
175 strong_alias (wait
, __wait
)
179 CANCELABLE_SYSCALL (__pid_t
, waitpid
, (__pid_t pid
, int *stat_loc
,
181 (pid
, stat_loc
, options
))
185 CANCELABLE_SYSCALL (ssize_t
, write
, (int fd
, const void *buf
, size_t n
),
187 strong_alias (write
, __write
)
190 /* The following system calls are thread cancellation points specified
194 CANCELABLE_SYSCALL (int, accept
, (int fd
, __SOCKADDR_ARG addr
,
195 socklen_t
*addr_len
),
196 (fd
, addr
, addr_len
))
199 CANCELABLE_SYSCALL (int, connect
, (int fd
, __CONST_SOCKADDR_ARG addr
,
202 strong_alias (connect
, __connect
)
205 CANCELABLE_SYSCALL (ssize_t
, recv
, (int fd
, __ptr_t buf
, size_t n
, int flags
),
209 CANCELABLE_SYSCALL (ssize_t
, recvfrom
, (int fd
, __ptr_t buf
, size_t n
, int flags
,
210 __SOCKADDR_ARG addr
, socklen_t
*addr_len
),
211 (fd
, buf
, n
, flags
, addr
, addr_len
))
214 CANCELABLE_SYSCALL (ssize_t
, recvmsg
, (int fd
, struct msghdr
*message
, int flags
),
215 (fd
, message
, flags
))
218 CANCELABLE_SYSCALL (ssize_t
, send
, (int fd
, const __ptr_t buf
, size_t n
,
221 strong_alias (send
, __send
)
224 CANCELABLE_SYSCALL (ssize_t
, sendmsg
, (int fd
, const struct msghdr
*message
,
226 (fd
, message
, flags
))
229 CANCELABLE_SYSCALL (ssize_t
, sendto
, (int fd
, const __ptr_t buf
, size_t n
,
230 int flags
, __CONST_SOCKADDR_ARG addr
,
232 (fd
, buf
, n
, flags
, addr
, addr_len
))