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59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
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/* writev supports all Linux kernels >= 2.0.
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Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <stddef.h>
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#include <sys/param.h>
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#include <sys/uio.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <bp-checks.h>
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#include <nptl/pthreadP.h>
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#include <tls.h>
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extern ssize_t __syscall_writev (int, const struct iovec *__unbounded, int);
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ssize_t
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__libc_writev (fd, vector, count)
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int fd;
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const struct iovec *vector;
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int count;
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{
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#ifndef NOT_IN_libc
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if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
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header.data.multiple_threads) == 0, 1))
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return INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
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int oldtype = LIBC_CANCEL_ASYNC ();
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#endif
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ssize_t result = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count),
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count);
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#ifndef NOT_IN_libc
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LIBC_CANCEL_RESET (oldtype);
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#endif
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return result;
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}
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strong_alias (__libc_writev, __writev)
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weak_alias (__libc_writev, writev)
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