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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
commit6a8ccc95528f5e86a8770ed15ce89609b5b3dee9 (patch)
treebbd4df35b4d4a6a8b00d7a5e61fb2668b850ad62 /libpthread/linuxthreads/wrapsyscall.c
parent398a27a5b323956344b4f831d892fed3bd9813c7 (diff)
remove linuxthreads.new, rename linuxthreads.old
Linuxthreads.new isn't really useful with the existence of NPTL/TLS for well supported architectures. There is no reason to use LT.new for ARM/MIPS or other architectures supporting NPTL/TLS. It is not available for noMMU architectures like Blackfin or FR-V. To simplify the live of the few uClibc-ng developers, LT.new is removed and LT.old is renamed to LT. LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS
Diffstat (limited to 'libpthread/linuxthreads/wrapsyscall.c')
-rw-r--r--libpthread/linuxthreads/wrapsyscall.c246
1 files changed, 246 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/wrapsyscall.c b/libpthread/linuxthreads/wrapsyscall.c
new file mode 100644
index 000000000..668b3911c
--- /dev/null
+++ b/libpthread/linuxthreads/wrapsyscall.c
@@ -0,0 +1,246 @@
+/* Wrapper around system calls to provide cancellation points.
+ Copyright (C) 1996,1997,1998,1999,2000,2001 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,
+ see <http://www.gnu.org/licenses/>. */
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <sys/epoll.h>
+#include <sys/resource.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <sys/syscall.h>
+
+
+#ifndef __PIC__
+/* We need a hook to force this file to be linked in when static
+ libpthread is used. */
+const char __pthread_provide_wrappers = 0;
+#endif
+
+/* Using private interface to libc (__libc_foo) to implement
+ * cancellable versions of some libc functions */
+#define CANCELABLE_SYSCALL(res_type, name, param_list, params) \
+res_type __libc_##name param_list; \
+res_type \
+__attribute__ ((weak)) \
+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 \
+__attribute__ ((weak)) \
+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))
+
+
+/* fcntl(2). */
+CANCELABLE_SYSCALL_VA (int, fcntl, (int fd, int cmd, ...),
+ (fd, cmd, va_arg (ap, long int)), cmd)
+
+#if defined __UCLIBC_HAS_LFS__ && __WORDSIZE == 32
+/* fcntl64(2). */
+CANCELABLE_SYSCALL_VA (int, fcntl64, (int fd, int cmd, ...),
+ (fd, cmd, va_arg (ap, long int)), cmd)
+#endif
+
+
+/* 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))
+
+#ifdef __UCLIBC_HAS_LFS__
+/* lseek64(2). */
+CANCELABLE_SYSCALL (off64_t, lseek64, (int fd, off64_t offset, int whence),
+ (fd, offset, whence))
+#endif
+
+#if defined(__NR_msync) && defined(__ARCH_USE_MMU__)
+
+/* msync(2). */
+CANCELABLE_SYSCALL (int, msync, (void *addr, size_t length, int flags),
+ (addr, length, flags))
+#endif
+
+
+/* nanosleep(2). */
+libpthread_hidden_proto(nanosleep)
+CANCELABLE_SYSCALL (int, nanosleep, (const struct timespec *requested_time,
+ struct timespec *remaining),
+ (requested_time, remaining))
+libpthread_hidden_def(nanosleep)
+
+
+/* open(2). */
+CANCELABLE_SYSCALL_VA (int, open, (const char *pathname, int flags, ...),
+ (pathname, flags, va_arg (ap, mode_t)), flags)
+
+
+#ifdef __UCLIBC_HAS_LFS__
+/* open64(3). */
+CANCELABLE_SYSCALL_VA (int, open64, (const char *pathname, int flags, ...),
+ (pathname, flags, va_arg (ap, mode_t)), flags)
+#endif
+
+/* pause(2). */
+CANCELABLE_SYSCALL (int, pause, (void), ())
+
+
+/* Enable this if enabling these in syscalls.c */
+/* pread(3). */
+CANCELABLE_SYSCALL (ssize_t, pread, (int fd, void *buf, size_t count,
+ off_t offset),
+ (fd, buf, count, offset))
+
+
+#if defined __UCLIBC_HAS_LFS__ && defined __NR_pread64
+/* pread64(3). */
+CANCELABLE_SYSCALL (ssize_t, pread64, (int fd, void *buf, size_t count,
+ off64_t offset),
+ (fd, buf, count, offset))
+#endif
+
+/* pwrite(3). */
+CANCELABLE_SYSCALL (ssize_t, pwrite, (int fd, const void *buf, size_t n,
+ off_t offset),
+ (fd, buf, n, offset))
+
+
+#if defined __UCLIBC_HAS_LFS__ && defined __NR_pwrited64
+/* pwrite64(3). */
+CANCELABLE_SYSCALL (ssize_t, pwrite64, (int fd, const void *buf, size_t n,
+ off64_t offset),
+ (fd, buf, n, offset))
+#endif
+
+/* read(2). */
+CANCELABLE_SYSCALL (ssize_t, read, (int fd, void *buf, size_t count),
+ (fd, buf, count))
+
+
+/* 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))
+
+
+/* waitpid(2). */
+libpthread_hidden_proto(waitpid)
+CANCELABLE_SYSCALL (__pid_t, waitpid, (__pid_t pid, int *stat_loc,
+ int options),
+ (pid, stat_loc, options))
+libpthread_hidden_def(waitpid)
+
+
+/* write(2). */
+CANCELABLE_SYSCALL (ssize_t, write, (int fd, const void *buf, size_t n),
+ (fd, buf, n))
+
+#if defined __UCLIBC_HAS_SOCKET__
+/* 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))
+
+/* recv(2). */
+CANCELABLE_SYSCALL (ssize_t, recv, (int fd, __ptr_t buf, size_t n, int flags),
+ (fd, buf, n, flags))
+
+/* recvfrom(2). */
+CANCELABLE_SYSCALL (ssize_t, 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 (ssize_t, recvmsg, (int fd, struct msghdr *message, int flags),
+ (fd, message, flags))
+
+/* send(2). */
+CANCELABLE_SYSCALL (ssize_t, send, (int fd, const __ptr_t buf, size_t n,
+ int flags),
+ (fd, buf, n, flags))
+
+/* sendmsg(2). */
+CANCELABLE_SYSCALL (ssize_t, sendmsg, (int fd, const struct msghdr *message,
+ int flags),
+ (fd, message, flags))
+
+/* sendto(2). */
+CANCELABLE_SYSCALL (ssize_t, 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))
+#endif /* __UCLIBC_HAS_SOCKET__ */
+
+#ifdef __UCLIBC_HAS_EPOLL__
+# include <sys/epoll.h>
+# ifdef __NR_epoll_wait
+CANCELABLE_SYSCALL (int, epoll_wait, (int epfd, struct epoll_event *events, int maxevents, int timeout),
+ (epfd, events, maxevents, timeout))
+# endif
+# ifdef __NR_epoll_pwait
+CANCELABLE_SYSCALL (int, epoll_pwait, (int epfd, struct epoll_event *events, int maxevents, int timeout,
+ const sigset_t *set),
+ (epfd, events, maxevents, timeout, set))
+# endif
+#endif