korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 21:38:32 +08:00
Code Issues Packages Projects Releases Wiki Activity

[GFS2] Clean up inode number handling

Browse Source 
This patch cleans up the inode number handling code. The main difference
is that instead of looking up the inodes using a struct gfs2_inum_host
we now use just the no_addr member of this structure. The tests relating
to no_formal_ino can then be done by the calling code. This has
advantages in that we want to do different things in different code
paths if the no_formal_ino doesn't match. In the NFS patch we want to
return -ESTALE, but in the ->lookup() path, its a bug in the fs if the
no_formal_ino doesn't match and thus we can withdraw in this case.

In order to later fix bz #201012, we need to be able to look up an inode
without knowing no_formal_ino, as the only information that is known to
us is the on-disk location of the inode in question.

This patch will also help us to fix bz #236099 at a later date by
cleaning up a lot of the code in that area.

There are no user visible changes as a result of this patch and there
are no changes to the on-disk format either.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2007-05-15 15:37:50 +01:00
parent 41d7db0ab4
commit dbb7cae2a3
19 changed files with 162 additions and 170 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/gfs2/bmap.c
View File

@ -1040,7 +1040,7 @@ static int trunc_end(struct gfs2_inode *ip)
ip->i_di.di_height = 0;
ip->i_di.di_goal_meta =
ip->i_di.di_goal_data =
ip->i_num.no_addr;
ip->i_no_addr;
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
}
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;

56
fs/gfs2/dir.c
View File

@ -1456,7 +1456,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
if (dip->i_di.di_entries != g.offset) {
fs_warn(sdp, "Number of entries corrupt in dir %llu, "
"ip->i_di.di_entries (%u) != g.offset (%u)\n",
(unsigned long long)dip->i_num.no_addr,
(unsigned long long)dip->i_no_addr,
dip->i_di.di_entries,
g.offset);
error = -EIO;
@ -1488,24 +1488,54 @@ out:
* Returns: errno
*/
int gfs2_dir_search(struct inode *dir, const struct qstr *name,
struct gfs2_inum_host *inum, unsigned int *type)
struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name)
{
struct buffer_head *bh;
struct gfs2_dirent *dent;
struct inode *inode;
dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh);
if (dent) {
if (IS_ERR(dent))
return ERR_PTR(PTR_ERR(dent));
inode = gfs2_inode_lookup(dir->i_sb,
be64_to_cpu(dent->de_inum.no_addr),
be16_to_cpu(dent->de_type));
brelse(bh);
return inode;
}
return ERR_PTR(-ENOENT);
}
int gfs2_dir_check(struct inode *dir, const struct qstr *name,
const struct gfs2_inode *ip)
{
struct buffer_head *bh;
struct gfs2_dirent *dent;
int ret = -ENOENT;
dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh);
if (dent) {
if (IS_ERR(dent))
return PTR_ERR(dent);
if (inum)
gfs2_inum_in(inum, (char *)&dent->de_inum);
if (type)
*type = be16_to_cpu(dent->de_type);
if (ip) {
if (be64_to_cpu(dent->de_inum.no_addr) != ip->i_no_addr)
goto out;
if (be64_to_cpu(dent->de_inum.no_formal_ino) !=
ip->i_no_formal_ino)
goto out;
if (unlikely(IF2DT(ip->i_inode.i_mode) !=
be16_to_cpu(dent->de_type))) {
gfs2_consist_inode(GFS2_I(dir));
ret = -EIO;
goto out;
}
}
ret = 0;
out:
brelse(bh);
return 0;
}
return -ENOENT;
return ret;
}
static int dir_new_leaf(struct inode *inode, const struct qstr *name)
@ -1565,7 +1595,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
*/
int gfs2_dir_add(struct inode *inode, const struct qstr *name,
const struct gfs2_inum_host *inum, unsigned type)
const struct gfs2_inode *nip, unsigned type)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct buffer_head *bh;
@ -1580,7 +1610,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
if (IS_ERR(dent))
return PTR_ERR(dent);
dent = gfs2_init_dirent(inode, dent, name, bh);
gfs2_inum_out(inum, (char *)&dent->de_inum);
gfs2_inum_out(nip, dent);
dent->de_type = cpu_to_be16(type);
if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
leaf = (struct gfs2_leaf *)bh->b_data;
@ -1700,7 +1730,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
*/
int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
struct gfs2_inum_host *inum, unsigned int new_type)
const struct gfs2_inode *nip, unsigned int new_type)
{
struct buffer_head *bh;
struct gfs2_dirent *dent;
@ -1715,7 +1745,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
return PTR_ERR(dent);
gfs2_trans_add_bh(dip->i_gl, bh, 1);
gfs2_inum_out(inum, (char *)&dent->de_inum);
gfs2_inum_out(nip, dent);
dent->de_type = cpu_to_be16(new_type);
if (dip->i_di.di_flags & GFS2_DIF_EXHASH) {

9
fs/gfs2/dir.h
View File

@ -16,15 +16,16 @@ struct inode;
struct gfs2_inode;
struct gfs2_inum;
int gfs2_dir_search(struct inode *dir, const struct qstr *filename,
struct gfs2_inum_host *inum, unsigned int *type);
struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *filename);
int gfs2_dir_check(struct inode *dir, const struct qstr *filename,
const struct gfs2_inode *ip);
int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
const struct gfs2_inum_host *inum, unsigned int type);
const struct gfs2_inode *ip, unsigned int type);
int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
filldir_t filldir);
int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
struct gfs2_inum_host *new_inum, unsigned int new_type);
const struct gfs2_inode *nip, unsigned int new_type);
int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip);

4
fs/gfs2/glock.c
View File

@ -1823,8 +1823,8 @@ static int dump_inode(struct glock_iter *gi, struct gfs2_inode *ip)
print_dbg(gi, " Inode:\n");
print_dbg(gi, " num = %llu/%llu\n",
(unsigned long long)ip->i_num.no_formal_ino,
(unsigned long long)ip->i_num.no_addr);
(unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr);
print_dbg(gi, " type = %u\n", IF2DT(ip->i_inode.i_mode));
print_dbg(gi, " i_flags =");
for (x = 0; x < 32; x++)

4
fs/gfs2/incore.h
View File

@ -213,8 +213,8 @@ enum {
struct gfs2_inode {
struct inode i_inode;
struct gfs2_inum_host i_num;
u64 i_no_addr;
u64 i_no_formal_ino;
unsigned long i_flags; /* GIF_... */
struct gfs2_dinode_host i_di; /* To be replaced by ref to block */

80
fs/gfs2/inode.c
View File

@ -41,9 +41,9 @@
static int iget_test(struct inode *inode, void *opaque)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_inum_host *inum = opaque;
u64 *no_addr = opaque;
if (ip->i_num.no_addr == inum->no_addr &&
if (ip->i_no_addr == *no_addr &&
inode->i_private != NULL)
return 1;
@ -53,37 +53,37 @@ static int iget_test(struct inode *inode, void *opaque)
static int iget_set(struct inode *inode, void *opaque)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_inum_host *inum = opaque;
u64 *no_addr = opaque;
ip->i_num = *inum;
inode->i_ino = inum->no_addr;
inode->i_ino = (unsigned long)*no_addr;
ip->i_no_addr = *no_addr;
return 0;
}
struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum)
struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
{
return ilookup5(sb, (unsigned long)inum->no_addr,
iget_test, inum);
unsigned long hash = (unsigned long)no_addr;
return ilookup5(sb, hash, iget_test, &no_addr);
}
static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum_host *inum)
static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
{
return iget5_locked(sb, (unsigned long)inum->no_addr,
iget_test, iget_set, inum);
unsigned long hash = (unsigned long)no_addr;
return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
}
/**
* gfs2_inode_lookup - Lookup an inode
* @sb: The super block
* @inum: The inode number
* @no_addr: The inode number
* @type: The type of the inode
*
* Returns: A VFS inode, or an error
*/
struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned int type)
struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned int type)
{
struct inode *inode = gfs2_iget(sb, inum);
struct inode *inode = gfs2_iget(sb, no_addr);
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_glock *io_gl;
int error;
@ -110,12 +110,12 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *i
inode->i_op = &gfs2_dev_iops;
}
error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
if (unlikely(error))
goto fail;
ip->i_gl->gl_object = ip;
error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
if (unlikely(error))
goto fail_put;
@ -144,14 +144,12 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
struct gfs2_dinode_host *di = &ip->i_di;
const struct gfs2_dinode *str = buf;
if (ip->i_num.no_addr != be64_to_cpu(str->di_num.no_addr)) {
if (ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)) {
if (gfs2_consist_inode(ip))
gfs2_dinode_print(ip);
return -EIO;
}
if (ip->i_num.no_formal_ino != be64_to_cpu(str->di_num.no_formal_ino))
return -ESTALE;
ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
ip->i_inode.i_rdev = 0;
switch (ip->i_inode.i_mode & S_IFMT) {
@ -247,7 +245,7 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
if (error)
goto out_qs;
rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
if (!rgd) {
gfs2_consist_inode(ip);
error = -EIO;
@ -366,8 +364,6 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
struct super_block *sb = dir->i_sb;
struct gfs2_inode *dip = GFS2_I(dir);
struct gfs2_holder d_gh;
struct gfs2_inum_host inum;
unsigned int type;
int error;
struct inode *inode = NULL;
int unlock = 0;
@ -395,12 +391,9 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
goto out;
}
error = gfs2_dir_search(dir, name, &inum, &type);
if (error)
goto out;
inode = gfs2_inode_lookup(sb, &inum, type);
inode = gfs2_dir_search(dir, name);
if (IS_ERR(inode))
error = PTR_ERR(inode);
out:
if (unlock)
gfs2_glock_dq_uninit(&d_gh);
@ -548,7 +541,7 @@ static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
if (!dip->i_inode.i_nlink)
return -EPERM;
error = gfs2_dir_search(&dip->i_inode, name, NULL, NULL);
error = gfs2_dir_check(&dip->i_inode, name, NULL);
switch (error) {
case -ENOENT:
error = 0;
@ -588,8 +581,7 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
*gid = current->fsgid;
}
static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum_host *inum,
u64 *generation)
static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
int error;
@ -605,7 +597,7 @@ static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum_host *inum,
if (error)
goto out_ipreserv;
inum->no_addr = gfs2_alloc_di(dip, generation);
*no_addr = gfs2_alloc_di(dip, generation);
gfs2_trans_end(sdp);
@ -760,7 +752,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
goto fail_quota_locks;
}
error = gfs2_dir_add(&dip->i_inode, name, &ip->i_num, IF2DT(ip->i_inode.i_mode));
error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
if (error)
goto fail_end_trans;
@ -844,7 +836,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
struct gfs2_inode *dip = ghs->gh_gl->gl_object;
struct inode *dir = &dip->i_inode;
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_inum_host inum;
struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
int error;
u64 generation;
@ -864,7 +856,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
if (error)
goto fail_gunlock;
error = alloc_dinode(dip, &inum, &generation);
error = alloc_dinode(dip, &inum.no_addr, &generation);
if (error)
goto fail_gunlock;
@ -877,7 +869,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
if (error)
goto fail_gunlock2;
inode = gfs2_inode_lookup(dir->i_sb, &inum, IF2DT(mode));
inode = gfs2_inode_lookup(dir->i_sb, inum.no_addr, IF2DT(mode));
if (IS_ERR(inode))
goto fail_gunlock2;
@ -976,10 +968,8 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
*/
int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip)
const struct gfs2_inode *ip)
{
struct gfs2_inum_host inum;
unsigned int type;
int error;
if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
@ -997,18 +987,10 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
if (error)
return error;
error = gfs2_dir_search(&dip->i_inode, name, &inum, &type);
error = gfs2_dir_check(&dip->i_inode, name, ip);
if (error)
return error;
if (!gfs2_inum_equal(&inum, &ip->i_num))
return -ENOENT;
if (IF2DT(ip->i_inode.i_mode) != type) {
gfs2_consist_inode(dip);
return -EIO;
}
return 0;
}

18
fs/gfs2/inode.h
View File

@ -10,17 +10,17 @@
#ifndef __INODE_DOT_H__
#define __INODE_DOT_H__
static inline int gfs2_is_stuffed(struct gfs2_inode *ip)
static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
{
return !ip->i_di.di_height;
}
static inline int gfs2_is_jdata(struct gfs2_inode *ip)
static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
{
return ip->i_di.di_flags & GFS2_DIF_JDATA;
}
static inline int gfs2_is_dir(struct gfs2_inode *ip)
static inline int gfs2_is_dir(const struct gfs2_inode *ip)
{
return S_ISDIR(ip->i_inode.i_mode);
}
@ -32,9 +32,15 @@ static inline void gfs2_set_inode_blocks(struct inode *inode)
(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
}
static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
u64 no_formal_ino)
{
return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
}
void gfs2_inode_attr_in(struct gfs2_inode *ip);
struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type);
struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum);
struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned type);
struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
int gfs2_inode_refresh(struct gfs2_inode *ip);
@ -47,7 +53,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip);
int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip);
const struct gfs2_inode *ip);
int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to);
int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
int gfs2_glock_nq_atime(struct gfs2_holder *gh);

2
fs/gfs2/meta_io.h
View File

@ -63,7 +63,7 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
struct buffer_head **bhp)
{
return gfs2_meta_indirect_buffer(ip, 0, ip->i_num.no_addr, 0, bhp);
return gfs2_meta_indirect_buffer(ip, 0, ip->i_no_addr, 0, bhp);
}
struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);

37
fs/gfs2/ondisk.c
View File

@ -33,26 +33,10 @@
* first arg: the cpu-order structure
*/
void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf)
void gfs2_inum_out(const struct gfs2_inode *ip, struct gfs2_dirent *dent)
{
const struct gfs2_inum *str = buf;
no->no_formal_ino = be64_to_cpu(str->no_formal_ino);
no->no_addr = be64_to_cpu(str->no_addr);
}
void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf)
{
struct gfs2_inum *str = buf;
str->no_formal_ino = cpu_to_be64(no->no_formal_ino);
str->no_addr = cpu_to_be64(no->no_addr);
}
static void gfs2_inum_print(const struct gfs2_inum_host *no)
{
printk(KERN_INFO " no_formal_ino = %llu\n", (unsigned long long)no->no_formal_ino);
printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)no->no_addr);
dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
}
static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf)
@ -74,9 +58,10 @@ void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)
sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
sb->sb_bsize = be32_to_cpu(str->sb_bsize);
sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
gfs2_inum_in(&sb->sb_master_dir, (char *)&str->sb_master_dir);
gfs2_inum_in(&sb->sb_root_dir, (char *)&str->sb_root_dir);
sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
@ -146,9 +131,8 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
str->di_header.__pad0 = 0;
str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
str->di_header.__pad1 = 0;
gfs2_inum_out(&ip->i_num, &str->di_num);
str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
@ -178,7 +162,8 @@ void gfs2_dinode_print(const struct gfs2_inode *ip)
{
const struct gfs2_dinode_host *di = &ip->i_di;
gfs2_inum_print(&ip->i_num);
printk(KERN_INFO " no_formal_ino = %llu\n", (unsigned long long)ip->i_no_formal_ino);
printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)ip->i_no_addr);
printk(KERN_INFO " di_size = %llu\n", (unsigned long long)di->di_size);
printk(KERN_INFO " di_blocks = %llu\n", (unsigned long long)di->di_blocks);

4
fs/gfs2/ops_address.c
View File

@ -757,8 +757,8 @@ static unsigned limit = 0;
return;
fs_warn(sdp, "ip = %llu %llu\n",
(unsigned long long)ip->i_num.no_formal_ino,
(unsigned long long)ip->i_num.no_addr);
(unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr);
for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
fs_warn(sdp, "ip->i_cache[%u] = %s\n",

24
fs/gfs2/ops_dentry.c
View File

@ -21,6 +21,7 @@
#include "glock.h"
#include "ops_dentry.h"
#include "util.h"
#include "inode.h"
/**
* gfs2_drevalidate - Check directory lookup consistency
@ -40,14 +41,15 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
struct gfs2_inode *dip = GFS2_I(parent->d_inode);
struct inode *inode = dentry->d_inode;
struct gfs2_holder d_gh;
struct gfs2_inode *ip;
struct gfs2_inum_host inum;
unsigned int type;
struct gfs2_inode *ip = NULL;
int error;
int had_lock=0;
if (inode && is_bad_inode(inode))
goto invalid;
if (inode) {
if (is_bad_inode(inode))
goto invalid;
ip = GFS2_I(inode);
}
if (sdp->sd_args.ar_localcaching)
goto valid;
@ -59,7 +61,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
goto fail;
}
error = gfs2_dir_search(parent->d_inode, &dentry->d_name, &inum, &type);
error = gfs2_dir_check(parent->d_inode, &dentry->d_name, ip);
switch (error) {
case 0:
if (!inode)
@ -73,16 +75,6 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
goto fail_gunlock;
}
ip = GFS2_I(inode);
if (!gfs2_inum_equal(&ip->i_num, &inum))
goto invalid_gunlock;
if (IF2DT(ip->i_inode.i_mode) != type) {
gfs2_consist_inode(dip);
goto fail_gunlock;
}
valid_gunlock:
if (!had_lock)
gfs2_glock_dq_uninit(&d_gh);

29
fs/gfs2/ops_export.c
View File

@ -75,10 +75,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
(connectable && *len < GFS2_LARGE_FH_SIZE))
return 255;
fh[0] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
fh[1] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
fh[2] = cpu_to_be32(ip->i_num.no_addr >> 32);
fh[3] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
fh[1] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
fh[2] = cpu_to_be32(ip->i_no_addr >> 32);
fh[3] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
*len = GFS2_SMALL_FH_SIZE;
if (!connectable || inode == sb->s_root->d_inode)
@ -90,10 +90,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
igrab(inode);
spin_unlock(&dentry->d_lock);
fh[4] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
fh[5] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
fh[6] = cpu_to_be32(ip->i_num.no_addr >> 32);
fh[7] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
fh[4] = cpu_to_be32(ip->i_no_formal_ino >> 32);
fh[5] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
fh[6] = cpu_to_be32(ip->i_no_addr >> 32);
fh[7] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
fh[8] = cpu_to_be32(inode->i_mode);
fh[9] = 0; /* pad to double word */
@ -144,7 +144,8 @@ static int gfs2_get_name(struct dentry *parent, char *name,
ip = GFS2_I(inode);
*name = 0;
gnfd.inum = ip->i_num;
gnfd.inum.no_addr = ip->i_no_addr;
gnfd.inum.no_formal_ino = ip->i_no_formal_ino;
gnfd.name = name;
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &gh);
@ -202,9 +203,9 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
/* System files? */
inode = gfs2_ilookup(sb, inum);
inode = gfs2_ilookup(sb, inum->no_addr);
if (inode) {
if (GFS2_I(inode)->i_num.no_formal_ino != inum->no_formal_ino) {
if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
iput(inode);
return ERR_PTR(-ESTALE);
}
@ -236,7 +237,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
gfs2_glock_dq_uninit(&rgd_gh);
gfs2_glock_dq_uninit(&ri_gh);
inode = gfs2_inode_lookup(sb, inum, fh_obj->imode);
inode = gfs2_inode_lookup(sb, inum->no_addr, fh_obj->imode);
if (!inode)
goto fail;
if (IS_ERR(inode)) {
@ -249,6 +250,10 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
iput(inode);
goto fail;
}
if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
iput(inode);
goto fail;
}
error = -EIO;
if (GFS2_I(inode)->i_di.di_flags & GFS2_DIF_SYSTEM) {

4
fs/gfs2/ops_file.c
View File

@ -502,7 +502,7 @@ static int gfs2_lock(struct file *file, int cmd, struct file_lock *fl)
struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
struct gfs2_sbd *sdp = GFS2_SB(file->f_mapping->host);
struct lm_lockname name =
{ .ln_number = ip->i_num.no_addr,
{ .ln_number = ip->i_no_addr,
.ln_type = LM_TYPE_PLOCK };
if (!(fl->fl_flags & FL_POSIX))
@ -557,7 +557,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
gfs2_glock_dq_uninit(fl_gh);
} else {
error = gfs2_glock_get(GFS2_SB(&ip->i_inode),
ip->i_num.no_addr, &gfs2_flock_glops,
ip->i_no_addr, &gfs2_flock_glops,
CREATE, &gl);
if (error)
goto out;

16
fs/gfs2/ops_fstype.c
View File

@ -236,17 +236,17 @@ fail:
return error;
}
static struct inode *gfs2_lookup_root(struct super_block *sb,
struct gfs2_inum_host *inum)
static inline struct inode *gfs2_lookup_root(struct super_block *sb,
u64 no_addr)
{
return gfs2_inode_lookup(sb, inum, DT_DIR);
return gfs2_inode_lookup(sb, no_addr, DT_DIR);
}
static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
{
struct super_block *sb = sdp->sd_vfs;
struct gfs2_holder sb_gh;
struct gfs2_inum_host *inum;
u64 no_addr;
struct inode *inode;
int error = 0;
@ -289,10 +289,10 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
/* Get the root inode */
inum = &sdp->sd_sb.sb_root_dir;
no_addr = sdp->sd_sb.sb_root_dir.no_addr;
if (sb->s_type == &gfs2meta_fs_type)
inum = &sdp->sd_sb.sb_master_dir;
inode = gfs2_lookup_root(sb, inum);
no_addr = sdp->sd_sb.sb_master_dir.no_addr;
inode = gfs2_lookup_root(sb, no_addr);
if (IS_ERR(inode)) {
error = PTR_ERR(inode);
fs_err(sdp, "can't read in root inode: %d\n", error);
@ -449,7 +449,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
if (undo)
goto fail_qinode;
inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir);
inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr);
if (IS_ERR(inode)) {
error = PTR_ERR(inode);
fs_err(sdp, "can't read in master directory: %d\n", error);

20
fs/gfs2/ops_inode.c
View File

@ -157,7 +157,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
if (error)
goto out_gunlock;
error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
error = gfs2_dir_check(dir, &dentry->d_name, NULL);
switch (error) {
case -ENOENT:
break;
@ -217,8 +217,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
goto out_ipres;
}
error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
IF2DT(inode->i_mode));
error = gfs2_dir_add(dir, &dentry->d_name, ip, IF2DT(inode->i_mode));
if (error)
goto out_end_trans;
@ -275,7 +274,7 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
@ -420,7 +419,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
gfs2_inum_out(&dip->i_num, &dent->de_inum);
gfs2_inum_out(dip, dent);
dent->de_type = cpu_to_be16(DT_DIR);
gfs2_dinode_out(ip, di);
@ -472,7 +471,7 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
error = gfs2_glock_nq_m(3, ghs);
@ -614,7 +613,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
* this is the case of the target file already existing
* so we unlink before doing the rename
*/
nrgd = gfs2_blk2rgrpd(sdp, nip->i_num.no_addr);
nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr);
if (nrgd)
gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
}
@ -653,7 +652,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_gunlock;
error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
switch (error) {
case -ENOENT:
error = 0;
@ -750,7 +749,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_end_trans;
error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
error = gfs2_dir_mvino(ip, &name, nip, DT_DIR);
if (error)
goto out_end_trans;
} else {
@ -768,8 +767,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_end_trans;
error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
IF2DT(ip->i_inode.i_mode));
error = gfs2_dir_add(ndir, &ndentry->d_name, ip, IF2DT(ip->i_inode.i_mode));
if (error)
goto out_end_trans;

6
fs/gfs2/rgrp.c
View File

@ -1470,7 +1470,7 @@ void gfs2_unlink_di(struct inode *inode)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_rgrpd *rgd;
u64 blkno = ip->i_num.no_addr;
u64 blkno = ip->i_no_addr;
rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
if (!rgd)
@ -1505,9 +1505,9 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
{
gfs2_free_uninit_di(rgd, ip->i_num.no_addr);
gfs2_free_uninit_di(rgd, ip->i_no_addr);
gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, ip->i_num.no_addr, 1);
gfs2_meta_wipe(ip, ip->i_no_addr, 1);
}
/**

2
fs/gfs2/super.c
View File

@ -360,7 +360,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
name.len = sprintf(buf, "journal%u", sdp->sd_journals);
name.hash = gfs2_disk_hash(name.name, name.len);
error = gfs2_dir_search(sdp->sd_jindex, &name, NULL, NULL);
error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
if (error == -ENOENT) {
error = 0;
break;

4
fs/gfs2/util.c
View File

@ -115,8 +115,8 @@ int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
"GFS2: fsid=%s: inode = %llu %llu\n"
"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
sdp->sd_fsname,
sdp->sd_fsname, (unsigned long long)ip->i_num.no_formal_ino,
(unsigned long long)ip->i_num.no_addr,
sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr,
sdp->sd_fsname, function, file, line);
return rv;
}

11
include/linux/gfs2_ondisk.h
View File

@ -59,13 +59,6 @@ struct gfs2_inum_host {
__u64 no_addr;
};
static inline int gfs2_inum_equal(const struct gfs2_inum_host *ino1,
const struct gfs2_inum_host *ino2)
{
return ino1->no_formal_ino == ino2->no_formal_ino &&
ino1->no_addr == ino2->no_addr;
}
/*
* Generic metadata head structure
* Every inplace buffer logged in the journal must start with this.
@ -509,9 +502,9 @@ struct gfs2_quota_change_host {
#ifdef __KERNEL__
/* Translation functions */
struct gfs2_inode;
extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf);
extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf);
extern void gfs2_inum_out(const struct gfs2_inode *ip, struct gfs2_dirent *dent);
extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf);
extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf);
extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf);