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so the label is not considered unused. * sysdeps/mach/hurd/pwrite64.c: New file. * sysdeps/mach/hurd/pread64.c: New file. * sysdeps/mach/hurd/pread.c (__libc_pread): Define this name, with __pread as an alias. * sysdeps/mach/hurd/pwrite.c (__libc_pwrite): Define this name, with __pwrite as an alias. Implement POSIX "shared memory objects" as regular files residing in the /var/run/shm/ directory. This works on any system that supports _POSIX_MAPPED_FILES, to make it also support _POSIX_SHARED_MEMORY_OBJECTS. * sysdeps/posix/shm_open.c: New file. * sysdeps/posix/shm_unlink.c: New file. * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_SHARED_MEMORY_OBJECTS): Define it. * rt/aio_notify.c (__aio_notify_only) [! _POSIX_REALTIME_SIGNALS]: Use raise instead of __aio_sigqueue.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Read block from given position in file without changing file pointer.
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Hurd version.
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Copyright (C) 1999,2001 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <unistd.h>
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#include <hurd/fd.h>
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ssize_t
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__libc_pread (int fd, void *buf, size_t nbytes, off_t offset)
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{
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error_t err;
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if (offset < 0)
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err = EINVAL;
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else
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err = HURD_FD_USE (fd, _hurd_fd_read (descriptor, buf, &nbytes, offset));
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return err ? __hurd_dfail (fd, err) : nbytes;
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}
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#ifndef __libc_pread
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strong_alias (__libc_pread, __pread)
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weak_alias (__libc_pread, pread)
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#endif
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