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Fix sync_file_range on ppc/ppc64.

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I've noticed that sync_file_range is a stub on ppc/ppc64.
The kernel on these arches provides sync_file_range2 syscall with swapped
parameters.
The following completely untested patch ought to fix this.
This commit is contained in:
Jakub Jelinek 2009-11-17 18:04:51 -08:00 committed by Ulrich Drepper
parent f8c10bb45b
commit 8ad81b316b
3 changed files with 61 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2009-11-16 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sync_file_range.c (sync_file_range):
Implement using sync_file_range2 syscall if __NR_sync_file_range2
is defined.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sync_file_range.c: New
file.
2009-11-17 Paolo Bonzini <bonzini@gnu.org>
* posix/bug-regex30.c: New file.

44
sysdeps/unix/sysv/linux/powerpc/powerpc64/sync_file_range.c Normal file
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@ -0,0 +1,44 @@
/* Selective file content synch'ing.
Copyright (C) 2006, 2007, 2009 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 <fcntl.h>
#include <sys/types.h>
#include <sysdep.h>
#include <sys/syscall.h>
#if defined __NR_sync_file_range2
int
sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
{
return INLINE_SYSCALL (sync_file_range2, 4, fd, flags, from, to);
}
#else
int
sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
{
__set_errno (ENOSYS);
return -1;
}
stub_warning (sync_file_range)
# include <stub-tag.h>
#endif

10
sysdeps/unix/sysv/linux/sync_file_range.c
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@ -1,5 +1,5 @@
/* Selective file content synch'ing.
Copyright (C) 2006, 2007 Free Software Foundation, Inc.
Copyright (C) 2006, 2007, 2009 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
@ -34,6 +34,14 @@ sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
__LONG_LONG_PAIR ((long) (to >> 32), (long) to),
flags);
}
#elif defined __NR_sync_file_range2
int
sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
{
return INLINE_SYSCALL (sync_file_range2, 6, fd, flags,
__LONG_LONG_PAIR ((long) (from >> 32), (long) from),
__LONG_LONG_PAIR ((long) (to >> 32), (long) to));
}
#else
int
sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)