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freebsd-skq/sys/fs/ext2fs/ext2_extern.h

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/* -> /*- for copyright notices, minor format tweaks as necessary
2005-01-06 18:27:30 +00:00
/*-
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
* modified for EXT2FS support in Lites 1.1
*
* Aug 1995, Godmar Back (gback@cs.utah.edu)
* University of Utah, Department of Computer Science
*/
/*-
sys: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
2017-11-20 19:43:44 +00:00
* SPDX-License-Identifier: BSD-3-Clause
*
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
ext2fs: renumber the license clauses to avoid skipping #3. This is to keep consistency with other files, and help license-checking utilities determine the number of clauses that apply. No functional change.
2016-12-02 19:47:23 +00:00
* 3. Neither the name of the University nor the names of its contributors
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ffs_extern.h 8.3 (Berkeley) 4/16/94
Support filesystems with the not-so-new "sparse_superblocks" feature. When this feature is enabled, mke2fs doesn't necessarily allocate a super block and its associated descriptor blocks for every group. The (non-)allocations are reflected in the block bitmap. Since the filesystem code doesn't write to these blocks except for the first superblock, all it has to do to support them is to not count them in ext2_statfs() and not attempt to check them at mount time in ext2_check_blocks_bitmap() (the check has never been enabled in FreeBSD anyway).
2000-11-03 16:41:48 +00:00
* $FreeBSD$
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
*/
Bring in the ext2fs work done by Aditya Sarawgi during and after Google Summer of Code 2009: - BSDL block and inode allocation policies for ext2fs. This involves the use FFS1 style block and inode allocation for ext2fs. Preallocation was removed since it was GPL'd. - Make ext2fs MPSAFE by introducing locks to per-mount datastructures. - Fixes for kern/122047 PR. - Various small bugfixes. - Move out of gnu/ directory. Sponsored by: Google Inc. Submitted by: Aditya Sarawgi <sarawgi.aditya AT SPAMFREE gmail DOT com>
2010-01-14 14:30:54 +00:00
#ifndef _FS_EXT2FS_EXT2_EXTERN_H_
#define _FS_EXT2FS_EXT2_EXTERN_H_
Removed bogus _BEGIN_DECLS/_END_DECLS. Removed unused struct tag declarations in cloned code. Added or cleaned up idempotency ifdefs.
1996-05-01 02:16:17 +00:00
Bring in the ext2fs work done by Aditya Sarawgi during and after Google Summer of Code 2009: - BSDL block and inode allocation policies for ext2fs. This involves the use FFS1 style block and inode allocation for ext2fs. Preallocation was removed since it was GPL'd. - Make ext2fs MPSAFE by introducing locks to per-mount datastructures. - Fixes for kern/122047 PR. - Various small bugfixes. - Move out of gnu/ directory. Sponsored by: Google Inc. Submitted by: Aditya Sarawgi <sarawgi.aditya AT SPAMFREE gmail DOT com>
2010-01-14 14:30:54 +00:00
struct ext2fs_dinode;
ext2fs: Bring back the htree dir_index implementation. The htree dir_index is perhaps one of the most characteristic features of the linux ext3 implementation. It was removed in r281670, due to repeated bug reports. Damjan Jovanic detected and fixed three bugs and did some stress testing by building Apache OpenOffice on top of it so it is now in good shape to bring back. Differential Revision: https://reviews.freebsd.org/D5007 Submitted by: Damjan Jovanovic Reviewed by: pfg Tested by: pho Relnotes: Yes MFC after: 2 months (only 10.x)
2016-01-21 14:50:28 +00:00
struct ext2fs_direct_2;
struct ext2fs_searchslot;
Complete the separation of ext2fs from ufs by copying the remaining shared code and converting all ufs references. Originally it may have made sense to share common features between the two filesystems, but recently it has only caused problems, the UFS2 work being the final straw. All UFS_* indirect calls are now direct calls to ext2_* functions, and ext2fs-specific mount and inode structures have been introduced.
2002-05-16 19:08:03 +00:00
struct indir;
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
struct inode;
struct mount;
Add function prototypes for most of the new Lite2 functions. Also made a few of the miscfs routines static to be consistent. Some modules simply required some additional #includes to remove -Wall warnings.
1997-02-12 06:52:51 +00:00
struct vfsconf;
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
struct vnode;
ext2fs: Bring back the htree dir_index implementation. The htree dir_index is perhaps one of the most characteristic features of the linux ext3 implementation. It was removed in r281670, due to repeated bug reports. Damjan Jovanic detected and fixed three bugs and did some stress testing by building Apache OpenOffice on top of it so it is now in good shape to bring back. Differential Revision: https://reviews.freebsd.org/D5007 Submitted by: Damjan Jovanovic Reviewed by: pfg Tested by: pho Relnotes: Yes MFC after: 2 months (only 10.x)
2016-01-21 14:50:28 +00:00
int ext2_add_entry(struct vnode *, struct ext2fs_direct_2 *);
Define ext2fs local types and use them. Add definitions for e2fs_daddr_t, e4fs_daddr_t in addition to the already existing e2fs_lbn_t and adjust them for ext4. Other than making the code more readable these changes should fix problems related to big filesystems. Setting the proper types can be tricky so the process was helped by looking at UFS. In our implementation, logical block numbers can be negative and the code depends on it. In ext2, block numbers are unsigned so it is convenient to keep e2fs_daddr_t unsigned and use the complete 32 bits. In the case of e4fs_daddr_t, while the value should be unsigned, for ext4 we only need to support 48 bits so preserving an extra bit from the sign is not an issue. While here also drop the ext2_setblock() prototype that was never used. Discussed with: mckusick, bde MFC after: 3 weeks
2013-08-13 15:40:43 +00:00
int ext2_alloc(struct inode *, daddr_t, e4fs_daddr_t, int,
struct ucred *, e4fs_daddr_t *);
Fix physical block number overflow in different places. Approved by: pfg (mentor) MFC after: 6 months
2017-10-24 20:10:08 +00:00
e4fs_daddr_t ext2_alloc_meta(struct inode *ip);
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_balloc(struct inode *,
Define and use e2fs_lbn_t in ext2fs. In line to what is done in UFS, define an internal type e2fs_lbn_t for the logical block numbers. This change is basically a no-op as the new type is unchanged (int32_t) but it may be useful as bumping this may be required for ext4fs. Also, as pointed out by Bruce Evans: -Use daddr_t for daddr in ext2_bmaparray(). This seems to improve reliability with the reallocblks option. - Add a cast to the fsbtodb() macro as in UFS. Reviewed by: bde MFC after: 3 days
2013-06-23 02:44:42 +00:00
e2fs_lbn_t, int, struct ucred *, struct buf **, int);
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_blkatoff(struct vnode *, off_t, char **, struct buf **);
Define ext2fs local types and use them. Add definitions for e2fs_daddr_t, e4fs_daddr_t in addition to the already existing e2fs_lbn_t and adjust them for ext4. Other than making the code more readable these changes should fix problems related to big filesystems. Setting the proper types can be tricky so the process was helped by looking at UFS. In our implementation, logical block numbers can be negative and the code depends on it. In ext2, block numbers are unsigned so it is convenient to keep e2fs_daddr_t unsigned and use the complete 32 bits. In the case of e4fs_daddr_t, while the value should be unsigned, for ext4 we only need to support 48 bits so preserving an extra bit from the sign is not an issue. While here also drop the ext2_setblock() prototype that was never used. Discussed with: mckusick, bde MFC after: 3 weeks
2013-08-13 15:40:43 +00:00
void ext2_blkfree(struct inode *, e4fs_daddr_t, long);
e4fs_daddr_t ext2_blkpref(struct inode *, e2fs_lbn_t, int, e2fs_daddr_t *,
e2fs_daddr_t);
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_bmap(struct vop_bmap_args *);
Define ext2fs local types and use them. Add definitions for e2fs_daddr_t, e4fs_daddr_t in addition to the already existing e2fs_lbn_t and adjust them for ext4. Other than making the code more readable these changes should fix problems related to big filesystems. Setting the proper types can be tricky so the process was helped by looking at UFS. In our implementation, logical block numbers can be negative and the code depends on it. In ext2, block numbers are unsigned so it is convenient to keep e2fs_daddr_t unsigned and use the complete 32 bits. In the case of e4fs_daddr_t, while the value should be unsigned, for ext4 we only need to support 48 bits so preserving an extra bit from the sign is not an issue. While here also drop the ext2_setblock() prototype that was never used. Discussed with: mckusick, bde MFC after: 3 weeks
2013-08-13 15:40:43 +00:00
int ext2_bmaparray(struct vnode *, daddr_t, daddr_t *, int *, int *);
Add inital extents read-write support. Approved by: pfg (mentor) MFC after: 6 months RelNotes: Yes Differential Revision: https://reviews.freebsd.org/D12087
2017-10-17 20:45:44 +00:00
int ext4_bmapext(struct vnode *, int32_t, int64_t *, int *, int *);
Fix physical block number overflow in different places. Approved by: pfg (mentor) MFC after: 6 months
2017-10-24 20:10:08 +00:00
void ext2_clusteracct(struct m_ext2fs *, char *, int, e4fs_daddr_t, int);
Complete the separation of ext2fs from ufs by copying the remaining shared code and converting all ufs references. Originally it may have made sense to share common features between the two filesystems, but recently it has only caused problems, the UFS2 work being the final straw. All UFS_* indirect calls are now direct calls to ext2_* functions, and ext2fs-specific mount and inode structures have been introduced.
2002-05-16 19:08:03 +00:00
void ext2_dirbad(struct inode *ip, doff_t offset, char *how);
Add check to avoid raw inode iblocks fields overflow in case of huge_file feature. Use the Linux logic for now. Reviewed by: pfg (mentor) Approved by: pfg (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D12131
2017-09-27 16:12:13 +00:00
void ext2_fserr(struct m_ext2fs *, uid_t, char *);
Add metadata_csum feature support. Reviewed by: pfg (mentor) Approved by: pfg (mentor) MFC after: 6 months Differential Revision: https://reviews.freebsd.org/D13810
2018-01-14 20:46:39 +00:00
int ext2_ei2i(struct ext2fs_dinode *, struct inode *);
Define ext2fs local types and use them. Add definitions for e2fs_daddr_t, e4fs_daddr_t in addition to the already existing e2fs_lbn_t and adjust them for ext4. Other than making the code more readable these changes should fix problems related to big filesystems. Setting the proper types can be tricky so the process was helped by looking at UFS. In our implementation, logical block numbers can be negative and the code depends on it. In ext2, block numbers are unsigned so it is convenient to keep e2fs_daddr_t unsigned and use the complete 32 bits. In the case of e4fs_daddr_t, while the value should be unsigned, for ext4 we only need to support 48 bits so preserving an extra bit from the sign is not an issue. While here also drop the ext2_setblock() prototype that was never used. Discussed with: mckusick, bde MFC after: 3 weeks
2013-08-13 15:40:43 +00:00
int ext2_getlbns(struct vnode *, daddr_t, struct indir *, int *);
Add check to avoid raw inode iblocks fields overflow in case of huge_file feature. Use the Linux logic for now. Reviewed by: pfg (mentor) Approved by: pfg (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D12131
2017-09-27 16:12:13 +00:00
int ext2_i2ei(struct inode *, struct ext2fs_dinode *);
Complete the separation of ext2fs from ufs by copying the remaining shared code and converting all ufs references. Originally it may have made sense to share common features between the two filesystems, but recently it has only caused problems, the UFS2 work being the final straw. All UFS_* indirect calls are now direct calls to ext2_* functions, and ext2fs-specific mount and inode structures have been introduced.
2002-05-16 19:08:03 +00:00
void ext2_itimes(struct vnode *vp);
Minor sorting. MFC after: 3 days
2013-06-26 19:43:22 +00:00
int ext2_reallocblks(struct vop_reallocblks_args *);
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_reclaim(struct vop_reclaim_args *);
int ext2_truncate(struct vnode *, off_t, int, struct ucred *, struct thread *);
int ext2_update(struct vnode *, int);
int ext2_valloc(struct vnode *, int, struct ucred *, struct vnode **);
int ext2_vfree(struct vnode *, ino_t, int);
Back when VOP_* was introduced, we did not have new-style struct initializations but we did have lofty goals and big ideals. Adjust to more contemporary circumstances and gain type checking. Replace the entire vop_t frobbing thing with properly typed structures. The only casualty is that we can not add a new VOP_ method with a loadable module. History has not given us reason to belive this would ever be feasible in the the first place. Eliminate in toto VOCALL(), vop_t, VNODEOP_SET() etc. Give coda correct prototypes and function definitions for all vop_()s. Generate a bit more data from the vnode_if.src file: a struct vop_vector and protype typedefs for all vop methods. Add a new vop_bypass() and make vop_default be a pointer to another struct vop_vector. Remove a lot of vfs_init since vop_vector is ready to use from the compiler. Cast various vop_mumble() to void * with uppercase name, for instance VOP_PANIC, VOP_NULL etc. Implement VCALL() by making vdesc_offset the offsetof() the relevant function pointer in vop_vector. This is disgusting but since the code is generated by a script comparatively safe. The alternative for nullfs etc. would be much worse. Fix up all vnode method vectors to remove casts so they become typesafe. (The bulk of this is generated by scripts)
2004-12-01 23:16:38 +00:00
int ext2_vinit(struct mount *, struct vop_vector *, struct vnode **vpp);
ext2fs: use of tab vs spaces. Consistently use a single tab after a #define as mentioned in style(9). Use tabs instead of space for indenting. Fix a typo: "hash_vesion". No functional change. MFC after: 3 days
2014-02-28 21:25:32 +00:00
int ext2_lookup(struct vop_cachedlookup_args *);
int ext2_readdir(struct vop_readdir_args *);
ifdef ext2_print_inode which is not really used. ext2_print_inode is not really used but it was nice to have for initial development work. #ifdef it under a new EXT2FS_DEBUG knob so that we don't spend time compiling it. MFC after: 3 days
2014-11-12 16:23:56 +00:00
#ifdef EXT2FS_DEBUG
Remove __P.
2002-03-19 22:40:48 +00:00
void ext2_print_inode(struct inode *);
ifdef ext2_print_inode which is not really used. ext2_print_inode is not really used but it was nice to have for initial development work. #ifdef it under a new EXT2FS_DEBUG knob so that we don't spend time compiling it. MFC after: 3 days
2014-11-12 16:23:56 +00:00
#endif
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_direnter(struct inode *,
struct vnode *, struct componentname *);
int ext2_dirremove(struct vnode *, struct componentname *);
int ext2_dirrewrite(struct inode *,
struct inode *, struct componentname *);
int ext2_dirempty(struct inode *, ino_t, struct ucred *);
int ext2_checkpath(struct inode *, struct inode *, struct ucred *);
ext2fs: Add uninit_bg feature support. From the linux tune2fs(8) manpage: "Allow the kernel to initialize bitmaps and inode tables and keep a high watermark for the unused inodes in a filesystem, to reduce e2fsck(8) time. This first e2fsck run after enabling this feature will take the full time, but subsequent e2fsck runs will take only a fraction of the original time, depending on how full the file system is." Submitted by: Fedor Uporov Differential Revision: https://reviews.freebsd.org/D11211
2017-06-20 14:28:51 +00:00
int ext2_cg_has_sb(struct m_ext2fs *fs, int cg);
Remove __P.
2002-03-19 22:40:48 +00:00
int ext2_inactive(struct vop_inactive_args *);
ext2fs: Bring back the htree dir_index implementation. The htree dir_index is perhaps one of the most characteristic features of the linux ext3 implementation. It was removed in r281670, due to repeated bug reports. Damjan Jovanic detected and fixed three bugs and did some stress testing by building Apache OpenOffice on top of it so it is now in good shape to bring back. Differential Revision: https://reviews.freebsd.org/D5007 Submitted by: Damjan Jovanovic Reviewed by: pfg Tested by: pho Relnotes: Yes MFC after: 2 months (only 10.x)
2016-01-21 14:50:28 +00:00
int ext2_htree_add_entry(struct vnode *, struct ext2fs_direct_2 *,
struct componentname *);
int ext2_htree_create_index(struct vnode *, struct componentname *,
struct ext2fs_direct_2 *);
int ext2_htree_has_idx(struct inode *);
int ext2_htree_hash(const char *, int, uint32_t *, int, uint32_t *,
uint32_t *);
int ext2_htree_lookup(struct inode *, const char *, int, struct buf **,
int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
int ext2_search_dirblock(struct inode *, void *, int *, const char *, int,
int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
Add 64bit feature support. Reviewed by: kevlo, pfg (mentor) Approved by: pfg (mentor) MFC after: 6 months Differential Revision: https://reviews.freebsd.org/D11530
2018-01-05 10:04:01 +00:00
uint32_t e2fs_gd_get_ndirs(struct ext2_gd *gd);
Add metadata_csum feature support. Reviewed by: pfg (mentor) Approved by: pfg (mentor) MFC after: 6 months Differential Revision: https://reviews.freebsd.org/D13810
2018-01-14 20:46:39 +00:00
uint64_t e2fs_gd_get_i_tables(struct ext2_gd *);
void ext2_sb_csum_set_seed(struct m_ext2fs *);
int ext2_sb_csum_verify(struct m_ext2fs *);
void ext2_sb_csum_set(struct m_ext2fs *);
int ext2_extattr_blk_csum_verify(struct inode *, struct buf *);
void ext2_extattr_blk_csum_set(struct inode *, struct buf *);
int ext2_dir_blk_csum_verify(struct inode *, struct buf *);
void ext2_dir_blk_csum_set(struct inode *, struct buf *);
void ext2_dir_blk_csum_set_mem(struct inode *, char *, int);
int ext2_extent_blk_csum_verify(struct inode *, void *);
void ext2_extent_blk_csum_set(struct inode *, void *);
int ext2_gd_i_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
void ext2_gd_i_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
int ext2_gd_b_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
void ext2_gd_b_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
int ext2_ei_csum_verify(struct inode *, struct ext2fs_dinode *);
void ext2_ei_csum_set(struct inode *, struct ext2fs_dinode *);
int ext2_gd_csum_verify(struct m_ext2fs *, struct cdev *);
void ext2_gd_csum_set(struct m_ext2fs *);
ext2fs: Bring back the htree dir_index implementation. The htree dir_index is perhaps one of the most characteristic features of the linux ext3 implementation. It was removed in r281670, due to repeated bug reports. Damjan Jovanic detected and fixed three bugs and did some stress testing by building Apache OpenOffice on top of it so it is now in good shape to bring back. Differential Revision: https://reviews.freebsd.org/D5007 Submitted by: Damjan Jovanovic Reviewed by: pfg Tested by: pho Relnotes: Yes MFC after: 2 months (only 10.x)
2016-01-21 14:50:28 +00:00
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
Sync with several changes in UFS/FFS: - 77115: Implement support for O_DIRECT. - 98425: Fix a performance issue introduced in 70131 that was causing reads before writes even when writing full blocks. - 98658: Rename the BALLOC flags from B_* to BA_* to avoid confusion with the struct buf B_ flags. - 100344: Merge the BA_ and IO_ flags so so that they may both be used in the same flags word. This merger is possible by assigning the IO_ flags to the low sixteen bits and the BA_ flags the high sixteen bits. - 105422: Fix a file-rewrite performance case. - 129545: Implement IO_INVAL in VOP_WRITE() by marking the buffer as "no cache". - Readd the DOINGASYNC() macro and use it to control asynchronous writes. Change i-node updates to honor DOINGASYNC() instead of always being synchronous. - Use a PRIV_VFS_RETAINSUGID check instead of checking cr_uid against 0 directly when deciding whether or not to clear suid and sgid bits. Submitted by: Pedro F. Giffuni giffunip at yahoo
2011-04-28 14:27:17 +00:00
/* Flags to low-level allocation routines.
* The low 16-bits are reserved for IO_ flags from vnode.h.
*/
#define BA_CLRBUF 0x00010000 /* Clear invalid areas of buffer. */
#define BA_SEQMASK 0x7F000000 /* Bits holding seq heuristic. */
#define BA_SEQSHIFT 24
#define BA_SEQMAX 0x7F
Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO file for GPL restrictions. This code was ported to the BSD platform by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD by John Dyson. This code is still green and should be used with caution. Additional changes to UFS necessary to make this code work will be commited seperately. Submitted by: Godmar Back <gback@facility.cs.utah.edu> Obtained from: Lites/Mach4
1995-11-05 23:25:12 +00:00
Back when VOP_* was introduced, we did not have new-style struct initializations but we did have lofty goals and big ideals. Adjust to more contemporary circumstances and gain type checking. Replace the entire vop_t frobbing thing with properly typed structures. The only casualty is that we can not add a new VOP_ method with a loadable module. History has not given us reason to belive this would ever be feasible in the the first place. Eliminate in toto VOCALL(), vop_t, VNODEOP_SET() etc. Give coda correct prototypes and function definitions for all vop_()s. Generate a bit more data from the vnode_if.src file: a struct vop_vector and protype typedefs for all vop methods. Add a new vop_bypass() and make vop_default be a pointer to another struct vop_vector. Remove a lot of vfs_init since vop_vector is ready to use from the compiler. Cast various vop_mumble() to void * with uppercase name, for instance VOP_PANIC, VOP_NULL etc. Implement VCALL() by making vdesc_offset the offsetof() the relevant function pointer in vop_vector. This is disgusting but since the code is generated by a script comparatively safe. The alternative for nullfs etc. would be much worse. Fix up all vnode method vectors to remove casts so they become typesafe. (The bulk of this is generated by scripts)
2004-12-01 23:16:38 +00:00
extern struct vop_vector ext2_vnodeops;
extern struct vop_vector ext2_fifoops;
Removed bogus _BEGIN_DECLS/_END_DECLS. Removed unused struct tag declarations in cloned code. Added or cleaned up idempotency ifdefs.
1996-05-01 02:16:17 +00:00
style(9) cleanups. Just to reduce some of the issues found with indent(1). MFC after: 1 week
2016-12-28 15:43:17 +00:00
#endif /* !_FS_EXT2FS_EXT2_EXTERN_H_ */
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