diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/writev.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/writev.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/writev.c b/nptl/sysdeps/unix/sysv/linux/writev.c new file mode 100644 index 0000000000..d32a1749b1 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/writev.c @@ -0,0 +1,58 @@ +/* writev supports all Linux kernels >= 2.0. + Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <stddef.h> +#include <sys/param.h> +#include <sys/uio.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> +#include <nptl/pthreadP.h> +#include <tls.h> + +extern ssize_t __syscall_writev (int, const struct iovec *__unbounded, int); + + +ssize_t +__libc_writev (fd, vector, count) + int fd; + const struct iovec *vector; + int count; +{ +#ifndef NOT_IN_libc + if (__builtin_expect (THREAD_GETMEM (THREAD_SELF, + header.data.multiple_threads) == 0, 1)) + return INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count); + + int oldtype = LIBC_CANCEL_ASYNC (); +#endif + + ssize_t result = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), + count); + +#ifndef NOT_IN_libc + LIBC_CANCEL_RESET (oldtype); +#endif + + return result; +} +strong_alias (__libc_writev, __writev) +weak_alias (__libc_writev, writev) |