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04e7e2658c
This is similar to other LFS consolidation, where the non-LFS is only built if __OFF_T_MATCHES_OFF64_T is not defined and the LFS version is aliased to non-LFS name if __OFF_T_MATCHES_OFF64_T is defined. For non-LFS variant, use sendfile syscall if defined, otherwise use sendfile64 plus the offset overflow check (as generic implementation). Checked on x86_64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* Transfer data between file descriptors. Linux version.
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Copyright (C) 2022 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, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/sendfile.h>
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#include <stddef.h>
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#include <errno.h>
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#include <sysdep.h>
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/* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
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descriptor OUT_FD. */
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ssize_t
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sendfile64 (int out_fd, int in_fd, off64_t *offset, size_t count)
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{
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#ifndef __NR_sendfile64
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# define __NR_sendfile64 __NR_sendfile
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#endif
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return INLINE_SYSCALL_CALL (sendfile64, out_fd, in_fd, offset, count);
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}
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#ifdef __OFF_T_MATCHES_OFF64_T
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strong_alias (sendfile64, sendfile)
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#endif
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