diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/bits/fcntl.h | 33 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sync_file_range.S | 72 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 4 |
3 files changed, 106 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/bits/fcntl.h b/sysdeps/unix/sysv/linux/i386/bits/fcntl.h index 9065825b98..a375888106 100644 --- a/sysdeps/unix/sysv/linux/i386/bits/fcntl.h +++ b/sysdeps/unix/sysv/linux/i386/bits/fcntl.h @@ -1,5 +1,5 @@ /* O_*, F_*, FD_* bit values for Linux. - Copyright (C) 1995, 1996, 1997, 1998, 2000, 2004 + Copyright (C) 1995, 1996, 1997, 1998, 2000, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -180,10 +180,41 @@ struct flock64 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ #endif + +#ifdef __USE_GNU +# define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages + in the range before performing the + write. */ +# define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those + dirty pages in the range which are + not presently under writeback. */ +# define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in + the range after performing the + write. */ +#endif + __BEGIN_DECLS +#ifdef __USE_GNU + /* Provide kernel hint to read ahead. */ extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) __THROW; + +/* Selective file content synch'ing. */ +extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, + unsigned int __flags); + + +/* Splice two files together. */ +extern int splice (int __fdin, int __fdout, size_t __len, unsigned int __flags) + __THROW; + +/* In-kernel implementation of tee for pipe buffers. */ +extern int tee (int __fdin, int __fdout, size_t __len, unsigned int __flags) + __THROW; + +#endif + __END_DECLS diff --git a/sysdeps/unix/sysv/linux/i386/sync_file_range.S b/sysdeps/unix/sysv/linux/i386/sync_file_range.S new file mode 100644 index 0000000000..f39e8a00d7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/sync_file_range.S @@ -0,0 +1,72 @@ +/* Selective file content synch'ing. + Copyright (C) 2006 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 <sysdep.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + + + .text +ENTRY (sync_file_range) +#ifdef __NR_sync_file_range + pushl %ebx + cfi_adjust_cfa_offset (4) + pushl %esi + cfi_adjust_cfa_offset (4) + pushl %edi + cfi_adjust_cfa_offset (4) + pushl %ebp + cfi_adjust_cfa_offset (4) + + movl 20(%esp), %ebx + cfi_rel_offset (ebx, 12) + movl 24(%esp), %ecx + movl 28(%esp), %edx + movl 32(%esp), %esi + cfi_rel_offset (esi, 8) + movl 36(%esp), %edi + cfi_rel_offset (edi, 4) + movl 40(%esp), %ebp + cfi_rel_offset (ebp, 0) + + movl $SYS_ify(sync_file_range), %eax + ENTER_KERNEL + + popl %ebp + cfi_adjust_cfa_offset (-4) + cfi_restore (ebp) + popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) + popl %esi + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) + popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) + + cmpl $-4095, %eax + jae SYSCALL_ERROR_LABEL +L(pseudo_end): + ret +#else + movl $-ENOSYS, %eax + jmp SYSCALL_ERROR_LABEL +#endif +PSEUDO_END (sync_file_range) diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index cb5767955c..90423d8434 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1992,1993,1995,1996,1997,1998,1999,2000,2002,2003,2004,2005 +/* Copyright (C) 1992,1993,1995-2000,2002-2005,2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995. @@ -447,7 +447,7 @@ asm (".L__X'%ebx = 1\n\t" #define LOADARGS_0 #ifdef __PIC__ -# if defined I386_USE_SYSENTER +# if defined I386_USE_SYSENTER && defined SHARED # define LOADARGS_1 \ "bpushl .L__X'%k3, %k3\n\t" # define LOADARGS_5 \ |