- 0 files changed
+ fs/dcache.c | 19 ++
+ fs/exec.c | 17 +-
+ fs/namei.c | 333 ++++++++++++++++++++++++++++++++++++++--------
+ fs/namespace.c | 28 ++-
+ fs/open.c | 176 +++++++++++++++++-------
+ fs/proc/base.c | 3
+ fs/stat.c | 28 ++-
+ include/linux/dcache.h | 60 ++++++++
+ include/linux/fs.h | 32 ++++
+ include/linux/fs_struct.h | 4
+ kernel/exit.c | 3
+ kernel/fork.c | 3
+ kernel/ksyms.c | 1
+ 13 files changed, 578 insertions(+), 129 deletions(-)
---- linux-2.4.20/fs/dcache.c~vfs_intent-2.4.20-rh 2003-07-17 08:32:59.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/dcache.c 2003-07-17 08:35:22.000000000 -0700
+--- linux-2.4.20-rh-20.9/fs/dcache.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/dcache.c 2003-09-14 17:34:53.000000000 +0400
@@ -186,6 +186,13 @@ int d_invalidate(struct dentry * dentry)
spin_unlock(&dcache_lock);
return 0;
/*
* Check whether to do a partial shrink_dcache
* to get rid of unused child entries.
-@@ -839,13 +846,19 @@ void d_delete(struct dentry * dentry)
+@@ -841,13 +848,19 @@ void d_delete(struct dentry * dentry)
* Adds a dentry to the hash according to its name.
*/
}
#define do_switch(x,y) do { \
---- linux-2.4.20/fs/namei.c~vfs_intent-2.4.20-rh 2003-07-17 08:32:47.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/namei.c 2003-07-17 08:35:22.000000000 -0700
+--- linux-2.4.20-rh-20.9/fs/exec.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/exec.c 2003-09-14 17:34:53.000000000 +0400
+@@ -114,8 +114,10 @@ asmlinkage long sys_uselib(const char *
+ struct file * file;
+ struct nameidata nd;
+ int error;
++ struct lookup_intent it = { .it_op = IT_OPEN,
++ .it_flags = FMODE_READ|FMODE_EXEC };
+
+- error = user_path_walk(library, &nd);
++ error = user_path_walk_it(library, &nd, &it);
+ if (error)
+ goto out;
+
+@@ -127,7 +129,8 @@ asmlinkage long sys_uselib(const char *
+ if (error)
+ goto exit;
+
+- file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
++ file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
++ intent_release(&it);
+ error = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+@@ -382,8 +385,10 @@ struct file *open_exec(const char *name)
+ struct inode *inode;
+ struct file *file;
+ int err = 0;
++ struct lookup_intent it = { .it_op = IT_OPEN,
++ .it_flags = FMODE_READ|FMODE_EXEC };
+
+- err = path_lookup(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
++ err = path_lookup_it(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
+ file = ERR_PTR(err);
+ if (!err) {
+ inode = nd.dentry->d_inode;
+@@ -395,7 +400,8 @@ struct file *open_exec(const char *name)
+ err = -EACCES;
+ file = ERR_PTR(err);
+ if (!err) {
+- file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
++ file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
++ intent_release(&it);
+ if (!IS_ERR(file)) {
+ err = deny_write_access(file);
+ if (err) {
+@@ -407,6 +413,7 @@ out:
+ return file;
+ }
+ }
++ intent_release(&it);
+ path_release(&nd);
+ }
+ goto out;
+@@ -1296,7 +1303,7 @@ int do_coredump(long signr, int exit_cod
+ goto close_fail;
+ if (!file->f_op->write)
+ goto close_fail;
+- if (do_truncate(file->f_dentry, 0) != 0)
++ if (do_truncate(file->f_dentry, 0, 0) != 0)
+ goto close_fail;
+
+ retval = binfmt->core_dump(signr, regs, file);
+--- linux-2.4.20-rh-20.9/fs/namei.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:25.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/namei.c 2003-09-14 17:34:53.000000000 +0400
@@ -94,6 +94,13 @@
* XEmacs seems to be relying on it...
*/
if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
if (!dentry->d_op->d_revalidate(dentry, flags) && !d_invalidate(dentry)) {
dput(dentry);
-@@ -281,11 +297,14 @@ static struct dentry * cached_lookup(str
+@@ -281,11 +297,15 @@ static struct dentry * cached_lookup(str
* make sure that nobody added the entry to the dcache in the meantime..
* SMP-safe
*/
{
struct dentry * result;
struct inode *dir = parent->d_inode;
++ int counter = 0;
+again:
-+
++ counter++;
down(&dir->i_sem);
/*
* First re-do the cached lookup just in case it was created
-@@ -300,6 +319,9 @@ static struct dentry * real_lookup(struc
+@@ -300,6 +320,9 @@ static struct dentry * real_lookup(struc
result = ERR_PTR(-ENOMEM);
if (dentry) {
lock_kernel();
result = dir->i_op->lookup(dir, dentry);
unlock_kernel();
if (result)
-@@ -321,6 +343,12 @@ static struct dentry * real_lookup(struc
+@@ -321,6 +344,15 @@ static struct dentry * real_lookup(struc
dput(result);
result = ERR_PTR(-ENOENT);
}
+ if (!result->d_op->d_revalidate_it(result, flags, it) &&
+ !d_invalidate(result)) {
+ dput(result);
-+ goto again;
++ if (counter > 10)
++ result = ERR_PTR(-ESTALE);
++ if (!IS_ERR(result))
++ goto again;
+ }
}
return result;
}
-@@ -334,7 +362,8 @@ int max_recursive_link = 5;
+@@ -334,7 +366,8 @@ int max_recursive_link = 5;
* Without that kind of total limit, nasty chains of consecutive
* symlinks can cause almost arbitrarily long lookups.
*/
{
int err;
if (current->link_count >= max_recursive_link)
-@@ -348,10 +377,18 @@ static inline int do_follow_link(struct
+@@ -348,10 +381,18 @@ static inline int do_follow_link(struct
current->link_count++;
current->total_link_count++;
UPDATE_ATIME(dentry->d_inode);
-+ nd->it = it;
++ nd->intent = it;
err = dentry->d_inode->i_op->follow_link(dentry, nd);
-+ if (!err && it != NULL && !(it->it_int_flags & IT_FL_FOLLOWED)) {
++ if (!err && it != NULL && !(it->d.lustre.it_int_flags & IT_FL_FOLLOWED)) {
+ /* vfs_follow_link was never called */
+ intent_release(it);
+ path_release(nd);
path_release(nd);
return -ELOOP;
}
-@@ -381,15 +418,26 @@ int follow_up(struct vfsmount **mnt, str
+@@ -381,15 +422,26 @@ int follow_up(struct vfsmount **mnt, str
return __follow_up(mnt, dentry);
}
spin_unlock(&dcache_lock);
+ if (it) {
+ opc = it->it_op;
-+ mode = it->it_mode;
++ mode = it->it_create_mode;
+ }
+ intent_release(it);
+ if (it) {
+ it->it_op = opc;
-+ it->it_mode = mode;
++ it->it_create_mode = mode;
+ }
dput(*dentry);
mntput(mounted->mnt_parent);
*dentry = dget(mounted->mnt_root);
-@@ -401,7 +449,7 @@ static inline int __follow_down(struct v
+@@ -401,7 +453,7 @@ static inline int __follow_down(struct v
int follow_down(struct vfsmount **mnt, struct dentry **dentry)
{
}
static inline void follow_dotdot(struct nameidata *nd)
-@@ -437,7 +485,7 @@ static inline void follow_dotdot(struct
+@@ -437,7 +489,7 @@ static inline void follow_dotdot(struct
mntput(nd->mnt);
nd->mnt = parent;
}
;
}
-@@ -449,7 +497,8 @@ static inline void follow_dotdot(struct
+@@ -449,7 +501,8 @@ static inline void follow_dotdot(struct
*
* We expect 'base' to be positive and a directory.
*/
{
struct dentry *dentry;
struct inode *inode;
-@@ -526,19 +575,18 @@ int link_path_walk(const char * name, st
+@@ -526,19 +579,18 @@ int link_path_walk(const char * name, st
break;
}
/* This does the actual lookups.. */
err = -ENOENT;
inode = dentry->d_inode;
-@@ -549,7 +597,7 @@ int link_path_walk(const char * name, st
+@@ -549,7 +601,7 @@ int link_path_walk(const char * name, st
goto out_dput;
if (inode->i_op->follow_link) {
dput(dentry);
if (err)
goto return_err;
-@@ -565,7 +613,7 @@ int link_path_walk(const char * name, st
+@@ -565,7 +617,7 @@ int link_path_walk(const char * name, st
nd->dentry = dentry;
}
err = -ENOTDIR;
break;
continue;
/* here ends the main loop */
-@@ -592,22 +640,22 @@ last_component:
+@@ -592,22 +644,22 @@ last_component:
if (err < 0)
break;
}
dput(dentry);
if (err)
goto return_err;
-@@ -621,7 +669,8 @@ last_component:
+@@ -621,7 +673,8 @@ last_component:
goto no_inode;
if (lookup_flags & LOOKUP_DIRECTORY) {
err = -ENOTDIR;
break;
}
goto return_base;
-@@ -645,6 +694,23 @@ return_reval:
+@@ -645,6 +698,25 @@ return_reval:
* Check the cached dentry for staleness.
*/
dentry = nd->dentry;
-+ revalidate_again:
+ if (dentry && dentry->d_op && dentry->d_op->d_revalidate_it) {
+ err = -ESTALE;
+ if (!dentry->d_op->d_revalidate_it(dentry, 0, it)) {
+ &dentry->d_name, 0, NULL);
+ d_invalidate(dentry);
+ dput(dentry);
-+ dentry = new;
-+ goto revalidate_again;
++ if (IS_ERR(new)) {
++ err = PTR_ERR(new);
++ break;
++ }
++ nd->dentry = new;
+ }
+ } else
if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
err = -ESTALE;
if (!dentry->d_op->d_revalidate(dentry, 0)) {
-@@ -658,15 +724,28 @@ out_dput:
+@@ -658,15 +730,28 @@ out_dput:
dput(dentry);
break;
}
}
/* SMP-safe */
-@@ -751,6 +830,17 @@ walk_init_root(const char *name, struct
+@@ -751,6 +836,17 @@ walk_init_root(const char *name, struct
}
/* SMP-safe */
int path_lookup(const char *path, unsigned flags, struct nameidata *nd)
{
int error = 0;
-@@ -765,6 +855,7 @@ int path_init(const char *name, unsigned
+@@ -765,6 +861,7 @@ int path_init(const char *name, unsigned
{
nd->last_type = LAST_ROOT; /* if there are only slashes... */
nd->flags = flags;
-+ nd->it = NULL;
++ nd->intent = NULL;
if (*name=='/')
return walk_init_root(name,nd);
read_lock(¤t->fs->lock);
-@@ -779,7 +870,8 @@ int path_init(const char *name, unsigned
+@@ -779,7 +876,8 @@ int path_init(const char *name, unsigned
* needs parent already locked. Doesn't follow mounts.
* SMP-safe.
*/
{
struct dentry * dentry;
struct inode *inode;
-@@ -802,13 +894,16 @@ struct dentry * lookup_hash(struct qstr
+@@ -802,13 +900,16 @@ struct dentry * lookup_hash(struct qstr
goto out;
}
dentry = inode->i_op->lookup(inode, new);
unlock_kernel();
if (!dentry)
-@@ -820,6 +915,12 @@ out:
+@@ -820,6 +921,12 @@ out:
return dentry;
}
/* SMP-safe */
struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
{
-@@ -841,7 +942,7 @@ struct dentry * lookup_one_len(const cha
+@@ -841,7 +948,7 @@ struct dentry * lookup_one_len(const cha
}
this.hash = end_name_hash(hash);
access:
return ERR_PTR(-EACCES);
}
-@@ -872,6 +973,23 @@ int __user_walk(const char *name, unsign
+@@ -872,6 +979,23 @@ int __user_walk(const char *name, unsign
return err;
}
/*
* It's inline, so penalty for filesystems that don't use sticky bit is
* minimal.
-@@ -969,7 +1087,8 @@ static inline int lookup_flags(unsigned
+@@ -969,7 +1093,8 @@ static inline int lookup_flags(unsigned
return retval;
}
{
int error;
-@@ -982,12 +1101,15 @@ int vfs_create(struct inode *dir, struct
+@@ -982,12 +1107,15 @@ int vfs_create(struct inode *dir, struct
goto exit_lock;
error = -EACCES; /* shouldn't it be ENOSYS? */
unlock_kernel();
exit_lock:
up(&dir->i_zombie);
-@@ -996,6 +1118,11 @@ exit_lock:
+@@ -996,6 +1124,11 @@ exit_lock:
return error;
}
/*
* open_namei()
*
-@@ -1010,7 +1137,8 @@ exit_lock:
+@@ -1010,7 +1143,8 @@ exit_lock:
* for symlinks (where the permissions are checked later).
* SMP-safe
*/
{
int acc_mode, error = 0;
struct inode *inode;
-@@ -1024,7 +1152,7 @@ int open_namei(const char * pathname, in
+@@ -1020,11 +1154,14 @@ int open_namei(const char * pathname, in
+
+ acc_mode = ACC_MODE(flag);
+
++ if (it)
++ it->it_flags = flag;
++
+ /*
* The simplest case - just a plain lookup.
*/
if (!(flag & O_CREAT)) {
if (error)
return error;
dentry = nd->dentry;
-@@ -1034,6 +1162,10 @@ int open_namei(const char * pathname, in
+@@ -1034,6 +1171,10 @@ int open_namei(const char * pathname, in
/*
* Create - we need to know the parent.
*/
-+ if (it) {
-+ it->it_mode = mode;
-+ it->it_op |= IT_CREAT;
-+ }
++ if (it) {
++ it->it_create_mode = mode;
++ it->it_op |= IT_CREAT;
++ }
error = path_lookup(pathname, LOOKUP_PARENT, nd);
if (error)
return error;
-@@ -1049,7 +1181,7 @@ int open_namei(const char * pathname, in
+@@ -1049,7 +1190,7 @@ int open_namei(const char * pathname, in
dir = nd->dentry;
down(&dir->d_inode->i_sem);
do_last:
error = PTR_ERR(dentry);
-@@ -1058,10 +1190,11 @@ do_last:
+@@ -1058,10 +1199,11 @@ do_last:
goto exit;
}
-+ it->it_mode = mode;
++ it->it_create_mode = mode;
/* Negative dentry, just create the file */
if (!dentry->d_inode) {
- error = vfs_create(dir->d_inode, dentry,
up(&dir->d_inode->i_sem);
dput(nd->dentry);
nd->dentry = dentry;
-@@ -1086,7 +1219,7 @@ do_last:
+@@ -1086,7 +1228,7 @@ do_last:
error = -ELOOP;
if (flag & O_NOFOLLOW)
goto exit_dput;
}
error = -ENOENT;
if (!dentry->d_inode)
-@@ -1165,7 +1298,7 @@ ok:
+@@ -1165,7 +1307,7 @@ ok:
if (!error) {
DQUOT_INIT(inode);
}
put_write_access(inode);
if (error)
-@@ -1177,8 +1310,10 @@ ok:
+@@ -1177,8 +1319,10 @@ ok:
return 0;
exit_dput:
path_release(nd);
return error;
-@@ -1197,7 +1332,16 @@ do_link:
+@@ -1197,7 +1341,16 @@ do_link:
* are done. Procfs-like symlinks just set LAST_BIND.
*/
UPDATE_ATIME(dentry->d_inode);
-+ nd->it = it;
++ nd->intent = it;
error = dentry->d_inode->i_op->follow_link(dentry, nd);
+ if (error) {
+ intent_release(it);
-+ } else if (it != NULL && !(it->it_int_flags & IT_FL_FOLLOWED)) {
++ } else if (it != NULL && !(it->d.lustre.it_int_flags & IT_FL_FOLLOWED)) {
+ /* vfs_follow_link was never called */
+ intent_release(it);
+ path_release(nd);
dput(dentry);
if (error)
return error;
-@@ -1219,13 +1363,20 @@ do_link:
+@@ -1219,13 +1372,20 @@ do_link:
}
dir = nd->dentry;
down(&dir->d_inode->i_sem);
{
struct dentry *dentry;
-@@ -1233,7 +1384,7 @@ static struct dentry *lookup_create(stru
+@@ -1233,7 +1393,7 @@ static struct dentry *lookup_create(stru
dentry = ERR_PTR(-EEXIST);
if (nd->last_type != LAST_NORM)
goto fail;
if (IS_ERR(dentry))
goto fail;
if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode)
-@@ -1289,7 +1440,16 @@ asmlinkage long sys_mknod(const char * f
+@@ -1289,7 +1449,16 @@ asmlinkage long sys_mknod(const char * f
error = path_lookup(tmp, LOOKUP_PARENT, &nd);
if (error)
goto out;
error = PTR_ERR(dentry);
mode &= ~current->fs->umask;
-@@ -1310,6 +1470,7 @@ asmlinkage long sys_mknod(const char * f
+@@ -1310,6 +1479,7 @@ asmlinkage long sys_mknod(const char * f
dput(dentry);
}
up(&nd.dentry->d_inode->i_sem);
path_release(&nd);
out:
putname(tmp);
-@@ -1357,7 +1518,14 @@ asmlinkage long sys_mkdir(const char * p
+@@ -1357,7 +1527,14 @@ asmlinkage long sys_mkdir(const char * p
error = path_lookup(tmp, LOOKUP_PARENT, &nd);
if (error)
goto out;
- dentry = lookup_create(&nd, 1);
-+ if (nd.dentry->d_inode->i_op->mkdir_raw) {
-+ struct inode_operations *op = nd.dentry->d_inode->i_op;
-+ error = op->mkdir_raw(&nd, mode);
-+ /* the file system wants to use normal vfs path now */
-+ if (error != -EOPNOTSUPP)
-+ goto out2;
-+ }
++ if (nd.dentry->d_inode->i_op->mkdir_raw) {
++ struct inode_operations *op = nd.dentry->d_inode->i_op;
++ error = op->mkdir_raw(&nd, mode);
++ /* the file system wants to use normal vfs path now */
++ if (error != -EOPNOTSUPP)
++ goto out2;
++ }
+ dentry = lookup_create(&nd, 1, NULL);
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
error = vfs_mkdir(nd.dentry->d_inode, dentry,
-@@ -1365,6 +1533,7 @@ asmlinkage long sys_mkdir(const char * p
+@@ -1365,6 +1542,7 @@ asmlinkage long sys_mkdir(const char * p
dput(dentry);
}
up(&nd.dentry->d_inode->i_sem);
path_release(&nd);
out:
putname(tmp);
-@@ -1465,8 +1634,16 @@ asmlinkage long sys_rmdir(const char * p
+@@ -1465,8 +1643,16 @@ asmlinkage long sys_rmdir(const char * p
error = -EBUSY;
goto exit1;
}
-+ if (nd.dentry->d_inode->i_op->rmdir_raw) {
-+ struct inode_operations *op = nd.dentry->d_inode->i_op;
++ if (nd.dentry->d_inode->i_op->rmdir_raw) {
++ struct inode_operations *op = nd.dentry->d_inode->i_op;
+
-+ error = op->rmdir_raw(&nd);
-+ /* the file system wants to use normal vfs path now */
-+ if (error != -EOPNOTSUPP)
-+ goto exit1;
-+ }
++ error = op->rmdir_raw(&nd);
++ /* the file system wants to use normal vfs path now */
++ if (error != -EOPNOTSUPP)
++ goto exit1;
++ }
down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash_it(&nd.last, nd.dentry, NULL);
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
error = vfs_rmdir(nd.dentry->d_inode, dentry);
-@@ -1524,8 +1701,15 @@ asmlinkage long sys_unlink(const char *
+@@ -1524,8 +1710,15 @@ asmlinkage long sys_unlink(const char *
error = -EISDIR;
if (nd.last_type != LAST_NORM)
goto exit1;
-+ if (nd.dentry->d_inode->i_op->unlink_raw) {
-+ struct inode_operations *op = nd.dentry->d_inode->i_op;
-+ error = op->unlink_raw(&nd);
-+ /* the file system wants to use normal vfs path now */
-+ if (error != -EOPNOTSUPP)
-+ goto exit1;
-+ }
++ if (nd.dentry->d_inode->i_op->unlink_raw) {
++ struct inode_operations *op = nd.dentry->d_inode->i_op;
++ error = op->unlink_raw(&nd);
++ /* the file system wants to use normal vfs path now */
++ if (error != -EOPNOTSUPP)
++ goto exit1;
++ }
down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash_it(&nd.last, nd.dentry, NULL);
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
/* Why not before? Because we want correct error value */
-@@ -1592,15 +1776,23 @@ asmlinkage long sys_symlink(const char *
+@@ -1592,15 +1785,23 @@ asmlinkage long sys_symlink(const char *
error = path_lookup(to, LOOKUP_PARENT, &nd);
if (error)
goto out;
putname(to);
}
putname(from);
-@@ -1676,7 +1868,14 @@ asmlinkage long sys_link(const char * ol
+@@ -1676,7 +1877,14 @@ asmlinkage long sys_link(const char * ol
error = -EXDEV;
if (old_nd.mnt != nd.mnt)
goto out_release;
error = PTR_ERR(new_dentry);
if (!IS_ERR(new_dentry)) {
error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
-@@ -1720,7 +1919,7 @@ exit:
+@@ -1720,7 +1928,7 @@ exit:
* locking].
*/
int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
{
int error;
struct inode *target;
-@@ -1799,7 +1998,7 @@ out_unlock:
+@@ -1799,7 +2007,7 @@ out_unlock:
}
int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
{
int error;
-@@ -1887,9 +2086,18 @@ static inline int do_rename(const char *
+@@ -1887,9 +2095,18 @@ static inline int do_rename(const char *
if (newnd.last_type != LAST_NORM)
goto exit2;
-+ if (old_dir->d_inode->i_op->rename_raw) {
++ if (old_dir->d_inode->i_op->rename_raw) {
+ lock_kernel();
-+ error = old_dir->d_inode->i_op->rename_raw(&oldnd, &newnd);
++ error = old_dir->d_inode->i_op->rename_raw(&oldnd, &newnd);
+ unlock_kernel();
-+ /* the file system wants to use normal vfs path now */
-+ if (error != -EOPNOTSUPP)
-+ goto exit2;
-+ }
++ /* the file system wants to use normal vfs path now */
++ if (error != -EOPNOTSUPP)
++ goto exit2;
++ }
+
double_lock(new_dir, old_dir);
error = PTR_ERR(old_dentry);
if (IS_ERR(old_dentry))
goto exit3;
-@@ -1905,16 +2113,16 @@ static inline int do_rename(const char *
+@@ -1905,16 +2122,16 @@ static inline int do_rename(const char *
if (newnd.last.name[newnd.last.len])
goto exit4;
}
dput(new_dentry);
exit4:
dput(old_dentry);
-@@ -1965,20 +2173,28 @@ out:
+@@ -1965,20 +2182,28 @@ out:
}
static inline int
goto fail;
+ if (it == NULL)
-+ it = nd->it;
-+ else if (it != nd->it)
-+ printk("it != nd->it: tell phil@clusterfs.com\n");
++ it = nd->intent;
++ else if (it != nd->intent)
++ printk("it != nd->intent: tell phil@clusterfs.com\n");
+ if (it != NULL)
-+ it->it_int_flags |= IT_FL_FOLLOWED;
++ it->d.lustre.it_int_flags |= IT_FL_FOLLOWED;
+
if (*link == '/') {
path_release(nd);
out:
if (current->link_count || res || nd->last_type!=LAST_NORM)
return res;
-@@ -2002,7 +2218,13 @@ fail:
+@@ -2002,7 +2227,13 @@ fail:
int vfs_follow_link(struct nameidata *nd, const char *link)
{
}
/* get the link contents into pagecache */
-@@ -2044,7 +2266,7 @@ int page_follow_link(struct dentry *dent
+@@ -2044,7 +2275,7 @@ int page_follow_link(struct dentry *dent
{
struct page *page = NULL;
char *s = page_getlink(dentry, &page);
if (page) {
kunmap(page);
page_cache_release(page);
---- linux-2.4.20/fs/open.c~vfs_intent-2.4.20-rh 2003-07-17 08:32:45.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/open.c 2003-07-17 08:35:22.000000000 -0700
+--- linux-2.4.20-rh-20.9/fs/namespace.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/namespace.c 2003-09-14 17:34:53.000000000 +0400
+@@ -99,6 +99,7 @@ static void detach_mnt(struct vfsmount *
+ {
+ old_nd->dentry = mnt->mnt_mountpoint;
+ old_nd->mnt = mnt->mnt_parent;
++ UNPIN(old_nd->dentry, old_nd->mnt, 1);
+ mnt->mnt_parent = mnt;
+ mnt->mnt_mountpoint = mnt->mnt_root;
+ list_del_init(&mnt->mnt_child);
+@@ -110,6 +111,7 @@ static void attach_mnt(struct vfsmount *
+ {
+ mnt->mnt_parent = mntget(nd->mnt);
+ mnt->mnt_mountpoint = dget(nd->dentry);
++ PIN(nd->dentry, nd->mnt, 1);
+ list_add(&mnt->mnt_hash, mount_hashtable+hash(nd->mnt, nd->dentry));
+ list_add(&mnt->mnt_child, &nd->mnt->mnt_mounts);
+ nd->dentry->d_mounted++;
+@@ -485,14 +487,17 @@ static int do_loopback(struct nameidata
+ {
+ struct nameidata old_nd;
+ struct vfsmount *mnt = NULL;
++ struct lookup_intent it = { .it_op = IT_GETATTR };
+ int err = mount_is_safe(nd);
+ if (err)
+ return err;
+ if (!old_name || !*old_name)
+ return -EINVAL;
+- err = path_lookup(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd);
+- if (err)
++ err = path_lookup_it(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd, &it);
++ if (err) {
++ intent_release(&it);
+ return err;
++ }
+
+ down_write(¤t->namespace->sem);
+ err = -EINVAL;
+@@ -515,6 +520,7 @@ static int do_loopback(struct nameidata
+ }
+
+ up_write(¤t->namespace->sem);
++ intent_release(&it);
+ path_release(&old_nd);
+ return err;
+ }
+@@ -698,6 +704,7 @@ long do_mount(char * dev_name, char * di
+ unsigned long flags, void *data_page)
+ {
+ struct nameidata nd;
++ struct lookup_intent it = { .it_op = IT_GETATTR };
+ int retval = 0;
+ int mnt_flags = 0;
+
+@@ -722,10 +729,11 @@ long do_mount(char * dev_name, char * di
+ flags &= ~(MS_NOSUID|MS_NOEXEC|MS_NODEV);
+
+ /* ... and get the mountpoint */
+- retval = path_lookup(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
+- if (retval)
++ retval = path_lookup_it(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
++ if (retval) {
++ intent_release(&it);
+ return retval;
+-
++ }
+ if (flags & MS_REMOUNT)
+ retval = do_remount(&nd, flags & ~MS_REMOUNT, mnt_flags,
+ data_page);
+@@ -736,6 +744,8 @@ long do_mount(char * dev_name, char * di
+ else
+ retval = do_add_mount(&nd, type_page, flags, mnt_flags,
+ dev_name, data_page);
++
++ intent_release(&it);
+ path_release(&nd);
+ return retval;
+ }
+@@ -901,6 +911,8 @@ asmlinkage long sys_pivot_root(const cha
+ {
+ struct vfsmount *tmp;
+ struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
++ struct lookup_intent new_it = { .it_op = IT_GETATTR };
++ struct lookup_intent old_it = { .it_op = IT_GETATTR };
+ int error;
+
+ if (!capable(CAP_SYS_ADMIN))
+@@ -908,14 +920,14 @@ asmlinkage long sys_pivot_root(const cha
+
+ lock_kernel();
+
+- error = __user_walk(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd);
++ error = __user_walk_it(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd, &new_it);
+ if (error)
+ goto out0;
+ error = -EINVAL;
+ if (!check_mnt(new_nd.mnt))
+ goto out1;
+
+- error = __user_walk(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd);
++ error = __user_walk_it(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd, &old_it);
+ if (error)
+ goto out1;
+
+@@ -970,8 +982,10 @@ out2:
+ up(&old_nd.dentry->d_inode->i_zombie);
+ up_write(¤t->namespace->sem);
+ path_release(&user_nd);
++ intent_release(&old_it);
+ path_release(&old_nd);
+ out1:
++ intent_release(&new_it);
+ path_release(&new_nd);
+ out0:
+ unlock_kernel();
+--- linux-2.4.20-rh-20.9/fs/open.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:25.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/open.c 2003-09-14 17:34:53.000000000 +0400
@@ -19,6 +19,8 @@
#include <asm/uaccess.h>
{
int error;
struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
++ struct lookup_intent it = { .it_op = IT_GETATTR };
- error = __user_walk(filename,LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,&nd);
+ error = __user_walk_it(filename,LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,&nd, &it);
{
int error;
struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
++ struct lookup_intent it = { .it_op = IT_GETATTR };
- error = __user_walk(filename, LOOKUP_POSITIVE | LOOKUP_FOLLOW |
- LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
if (error)
goto out;
-@@ -454,6 +502,7 @@ asmlinkage long sys_chroot(const char *
+@@ -454,39 +502,56 @@ asmlinkage long sys_chroot(const char *
set_fs_altroot();
error = 0;
dput_and_out:
path_release(&nd);
out:
return error;
-@@ -508,6 +557,18 @@ asmlinkage long sys_chmod(const char * f
- if (IS_RDONLY(inode))
- goto dput_and_out;
+ }
+
+-asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
++int chmod_common(struct dentry *dentry, mode_t mode)
+ {
+- struct inode * inode;
+- struct dentry * dentry;
+- struct file * file;
+- int err = -EBADF;
++ struct inode *inode = dentry->d_inode;
+ struct iattr newattrs;
++ int err = -EROFS;
+- file = fget(fd);
+- if (!file)
++ if (IS_RDONLY(inode))
+ goto out;
+
+- dentry = file->f_dentry;
+- inode = dentry->d_inode;
+ if (inode->i_op->setattr_raw) {
-+ struct inode_operations *op = nd.dentry->d_inode->i_op;
-+
+ newattrs.ia_mode = mode;
+ newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
+ newattrs.ia_valid |= ATTR_RAW;
-+ error = op->setattr_raw(inode, &newattrs);
++ err = inode->i_op->setattr_raw(inode, &newattrs);
+ /* the file system wants to use normal vfs path now */
-+ if (error != -EOPNOTSUPP)
-+ goto dput_and_out;
++ if (err != -EOPNOTSUPP)
++ goto out;
+ }
-+
- error = -EPERM;
+
+- err = -EROFS;
+- if (IS_RDONLY(inode))
+- goto out_putf;
+ err = -EPERM;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- goto dput_and_out;
-@@ -538,6 +599,20 @@ static int chown_common(struct dentry *
+- goto out_putf;
++ goto out;
++
+ if (mode == (mode_t) -1)
+ mode = inode->i_mode;
+ newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
+ newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
+ err = notify_change(dentry, &newattrs);
+
+-out_putf:
++out:
++ return err;
++}
++
++asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
++{
++ struct file * file;
++ int err = -EBADF;
++
++ file = fget(fd);
++ if (!file)
++ goto out;
++
++ err = chmod_common(file->f_dentry, mode);
++
+ fput(file);
+ out:
+ return err;
+@@ -495,30 +560,14 @@ out:
+ asmlinkage long sys_chmod(const char * filename, mode_t mode)
+ {
+ struct nameidata nd;
+- struct inode * inode;
+ int error;
+- struct iattr newattrs;
+
+ error = user_path_walk(filename, &nd);
+ if (error)
+ goto out;
+- inode = nd.dentry->d_inode;
+-
+- error = -EROFS;
+- if (IS_RDONLY(inode))
+- goto dput_and_out;
+-
+- error = -EPERM;
+- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+- goto dput_and_out;
+
+- if (mode == (mode_t) -1)
+- mode = inode->i_mode;
+- newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
+- newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
+- error = notify_change(nd.dentry, &newattrs);
++ error = chmod_common(nd.dentry, mode);
+
+-dput_and_out:
+ path_release(&nd);
+ out:
+ return error;
+@@ -538,6 +587,20 @@ static int chown_common(struct dentry *
error = -EROFS;
if (IS_RDONLY(inode))
goto out;
error = -EPERM;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
goto out;
-@@ -642,8 +717,9 @@ struct file *filp_open(const char * file
+@@ -642,8 +705,9 @@ struct file *filp_open(const char * file
{
int namei_flags, error;
struct nameidata nd;
-
- flags &= ~O_DIRECT;
-+ struct lookup_intent it = { .it_op = IT_OPEN, .it_flags = flags };
++ struct lookup_intent it = { .it_op = IT_OPEN };
+
+ //flags &= ~O_DIRECT;
namei_flags = flags;
if ((namei_flags+1) & O_ACCMODE)
-@@ -651,14 +727,15 @@ struct file *filp_open(const char * file
+@@ -651,14 +715,15 @@ struct file *filp_open(const char * file
if (namei_flags & O_TRUNC)
namei_flags |= 2;
{
struct file * f;
struct inode *inode;
-@@ -695,12 +772,15 @@ struct file *dentry_open(struct dentry *
+@@ -695,12 +760,15 @@ struct file *dentry_open(struct dentry *
}
if (f->f_op && f->f_op->open) {
return f;
cleanup_all:
-@@ -715,11 +795,17 @@ cleanup_all:
+@@ -715,11 +783,17 @@ cleanup_all:
cleanup_file:
put_filp(f);
cleanup_dentry:
/*
* Find an empty file descriptor entry, and mark it busy.
*/
---- linux-2.4.20/fs/stat.c~vfs_intent-2.4.20-rh 2003-07-17 08:33:05.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/stat.c 2003-07-17 08:51:33.000000000 -0700
-@@ -17,10 +17,12 @@
+--- linux-2.4.20-rh-20.9/fs/proc/base.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/proc/base.c 2003-09-14 17:34:53.000000000 +0400
+@@ -494,6 +494,9 @@ static int proc_pid_follow_link(struct d
+
+ error = inode->u.proc_i.op.proc_get_link(inode, &nd->dentry, &nd->mnt);
+ nd->last_type = LAST_BIND;
++
++ if (nd->intent != NULL)
++ nd->intent->d.lustre.it_int_flags |= IT_FL_FOLLOWED;
+ out:
+ return error;
+ }
+--- linux-2.4.20-rh-20.9/fs/stat.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/fs/stat.c 2003-09-14 17:35:10.000000000 +0400
+@@ -17,10 +17,14 @@
* Revalidate the inode. This is required for proper NFS attribute caching.
*/
static __inline__ int
{
struct inode * inode = dentry->d_inode;
- if (inode->i_op && inode->i_op->revalidate)
++ if (!inode)
++ return -ENOENT;
+ if (inode->i_op && inode->i_op->revalidate_it)
+ return inode->i_op->revalidate_it(dentry, it);
+ else if (inode->i_op && inode->i_op->revalidate)
return inode->i_op->revalidate(dentry);
return 0;
}
-@@ -32,13 +34,13 @@ static inline nlink_t user_nlink(struct
+@@ -32,13 +36,13 @@ static inline nlink_t user_nlink(struct
return inode->i_nlink;
}
if (res)
return res;
-@@ -111,10 +113,12 @@ int vfs_stat(char *name, struct kstat *s
+@@ -111,10 +115,12 @@ int vfs_stat(char *name, struct kstat *s
{
struct nameidata nd;
int error;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
++ struct lookup_intent it = { .it_op = IT_GETATTR };
- error = user_path_walk(name, &nd);
+ error = user_path_walk_it(name, &nd, &it);
if (!error) {
- error = do_getattr(nd.mnt, nd.dentry, stat);
+ error = do_getattr(nd.mnt, nd.dentry, stat, &it);
-+ intent_release(&it);
++ intent_release(&it);
path_release(&nd);
}
return error;
-@@ -124,10 +128,12 @@ int vfs_lstat(char *name, struct kstat *
+@@ -124,10 +130,12 @@ int vfs_lstat(char *name, struct kstat *
{
struct nameidata nd;
int error;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
++ struct lookup_intent it = { .it_op = IT_GETATTR };
- error = user_path_walk_link(name, &nd);
+ error = user_path_walk_link_it(name, &nd, &it);
if (!error) {
- error = do_getattr(nd.mnt, nd.dentry, stat);
+ error = do_getattr(nd.mnt, nd.dentry, stat, &it);
-+ intent_release(&it);
++ intent_release(&it);
path_release(&nd);
}
return error;
-@@ -139,7 +145,7 @@ int vfs_fstat(unsigned int fd, struct ks
+@@ -139,7 +147,7 @@ int vfs_fstat(unsigned int fd, struct ks
int error = -EBADF;
if (f) {
fput(f);
}
return error;
-@@ -286,7 +292,7 @@ asmlinkage long sys_readlink(const char
+@@ -286,7 +294,7 @@ asmlinkage long sys_readlink(const char
error = -EINVAL;
if (inode->i_op && inode->i_op->readlink &&
UPDATE_ATIME(inode);
error = inode->i_op->readlink(nd.dentry, buf, bufsiz);
}
---- linux-2.4.20/include/linux/dcache.h~vfs_intent-2.4.20-rh 2003-07-17 08:32:48.000000000 -0700
-+++ linux-2.4.20-mmonroe/include/linux/dcache.h 2003-07-17 08:35:22.000000000 -0700
-@@ -6,6 +6,45 @@
+--- linux-2.4.20-rh-20.9/include/linux/dcache.h~vfs_intent-2.4.20-rh 2003-09-13 19:34:28.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/include/linux/dcache.h 2003-09-14 17:34:53.000000000 +0400
+@@ -6,6 +6,51 @@
#include <asm/atomic.h>
#include <linux/mount.h>
#include <linux/kernel.h>
+
+#define INTENT_MAGIC 0x19620323
+
-+struct lookup_intent {
-+ int it_op;
-+ void (*it_op_release)(struct lookup_intent *);
-+ int it_magic;
-+ int it_mode;
-+ int it_flags;
-+ int it_disposition;
-+ int it_status;
++
++struct lustre_intent_data {
++ int it_disposition;
++ int it_status;
++ __u64 it_lock_handle;
++ void *it_data;
++ int it_lock_mode;
+ int it_int_flags;
-+ __u64 it_lock_handle[2];
-+ int it_lock_mode;
-+ void *it_data;
++};
++struct lookup_intent {
++ int it_magic;
++ void (*it_op_release)(struct lookup_intent *);
++ int it_op;
++ int it_flags;
++ int it_create_mode;
++ union {
++ struct lustre_intent_data lustre;
++ } d;
+};
+
+static inline void intent_init(struct lookup_intent *it, int op, int flags)
/*
* linux/include/linux/dcache.h
-@@ -96,8 +135,22 @@ struct dentry_operations {
+@@ -96,8 +141,22 @@ struct dentry_operations {
int (*d_delete)(struct dentry *);
void (*d_release)(struct dentry *);
void (*d_iput)(struct dentry *, struct inode *);
+ void (*d_unpin)(struct dentry *, struct vfsmount *, int);
};
-+#define PIN(de,mnt,flag) if (de->d_op && de->d_op->d_pin) \
++#define PIN(de,mnt,flag) if (de && de->d_op && de->d_op->d_pin) \
+ de->d_op->d_pin(de, mnt, flag);
-+#define UNPIN(de,mnt,flag) if (de->d_op && de->d_op->d_unpin) \
++#define UNPIN(de,mnt,flag) if (de && de->d_op && de->d_op->d_unpin) \
+ de->d_op->d_unpin(de, mnt, flag);
+
+
/* the dentry parameter passed to d_hash and d_compare is the parent
* directory of the entries to be compared. It is used in case these
* functions need any directory specific information for determining
-@@ -129,6 +182,7 @@ d_iput: no no yes
+@@ -129,6 +188,7 @@ d_iput: no no yes
* s_nfsd_free_path semaphore will be down
*/
#define DCACHE_REFERENCED 0x0008 /* Recently used, don't discard. */
extern spinlock_t dcache_lock;
---- linux-2.4.20/include/linux/fs.h~vfs_intent-2.4.20-rh 2003-07-17 08:34:44.000000000 -0700
-+++ linux-2.4.20-mmonroe/include/linux/fs.h 2003-07-17 08:35:22.000000000 -0700
-@@ -337,6 +337,9 @@ extern void set_bh_page(struct buffer_he
+--- linux-2.4.20-rh-20.9/include/linux/fs.h~vfs_intent-2.4.20-rh 2003-09-14 17:34:50.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/include/linux/fs.h 2003-09-14 17:34:53.000000000 +0400
+@@ -73,6 +73,7 @@ extern int leases_enable, dir_notify_ena
+
+ #define FMODE_READ 1
+ #define FMODE_WRITE 2
++#define FMODE_EXEC 4
+
+ #define READ 0
+ #define WRITE 1
+@@ -338,6 +339,9 @@ extern void set_bh_page(struct buffer_he
#define ATTR_MTIME_SET 256
#define ATTR_FORCE 512 /* Not a change, but a change it */
#define ATTR_ATTR_FLAG 1024
/*
* This is the Inode Attributes structure, used for notify_change(). It
-@@ -574,6 +577,7 @@ struct file {
+@@ -473,6 +477,7 @@ struct inode {
+ struct pipe_inode_info *i_pipe;
+ struct block_device *i_bdev;
+ struct char_device *i_cdev;
++ void *i_filterdata;
+
+ unsigned long i_dnotify_mask; /* Directory notify events */
+ struct dnotify_struct *i_dnotify; /* for directory notifications */
+@@ -575,6 +580,7 @@ struct file {
/* needed for tty driver, and maybe others */
void *private_data;
/* preallocated helper kiobuf to speedup O_DIRECT */
struct kiobuf *f_iobuf;
-@@ -701,6 +705,7 @@ struct nameidata {
+@@ -702,6 +708,7 @@ struct nameidata {
struct qstr last;
unsigned int flags;
int last_type;
-+ struct lookup_intent *it;
++ struct lookup_intent *intent;
};
/*
-@@ -821,7 +826,8 @@ extern int vfs_symlink(struct inode *, s
+@@ -822,7 +829,8 @@ extern int vfs_symlink(struct inode *, s
extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
extern int vfs_rmdir(struct inode *, struct dentry *);
extern int vfs_unlink(struct inode *, struct dentry *);
/*
* File types
-@@ -881,21 +887,32 @@ struct file_operations {
+@@ -882,21 +890,32 @@ struct file_operations {
struct inode_operations {
int (*create) (struct inode *,struct dentry *,int);
int (*revalidate) (struct dentry *);
+ int (*revalidate_it) (struct dentry *, struct lookup_intent *);
int (*setattr) (struct dentry *, struct iattr *);
-+ int (*setattr_raw) (struct inode *, struct iattr *);
++ int (*setattr_raw) (struct inode *, struct iattr *);
int (*getattr) (struct dentry *, struct iattr *);
int (*setxattr) (struct dentry *, const char *, void *, size_t, int);
ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
-@@ -1091,10 +1108,14 @@ static inline int get_lease(struct inode
+@@ -1092,10 +1111,14 @@ static inline int get_lease(struct inode
asmlinkage long sys_open(const char *, int, int);
asmlinkage long sys_close(unsigned int); /* yes, it's really unsigned */
extern int filp_close(struct file *, fl_owner_t id);
extern char * getname(const char *);
-@@ -1385,6 +1406,7 @@ typedef int (*read_actor_t)(read_descrip
+@@ -1386,6 +1409,7 @@ typedef int (*read_actor_t)(read_descrip
extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
extern int FASTCALL(__user_walk(const char *, unsigned, struct nameidata *));
extern int FASTCALL(path_init(const char *, unsigned, struct nameidata *));
extern int FASTCALL(path_walk(const char *, struct nameidata *));
extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
-@@ -1396,6 +1418,8 @@ extern struct dentry * lookup_one_len(co
+@@ -1397,6 +1421,8 @@ extern struct dentry * lookup_one_len(co
extern struct dentry * lookup_hash(struct qstr *, struct dentry *);
#define user_path_walk(name,nd) __user_walk(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd)
#define user_path_walk_link(name,nd) __user_walk(name, LOOKUP_POSITIVE, nd)
extern void inode_init_once(struct inode *);
extern void iput(struct inode *);
-@@ -1497,6 +1521,8 @@ extern struct file_operations generic_ro
+@@ -1504,6 +1530,8 @@ extern struct file_operations generic_ro
extern int vfs_readlink(struct dentry *, char *, int, const char *);
extern int vfs_follow_link(struct nameidata *, const char *);
extern int page_readlink(struct dentry *, char *, int);
extern int page_follow_link(struct dentry *, struct nameidata *);
extern struct inode_operations page_symlink_inode_operations;
---- linux-2.4.20/kernel/ksyms.c~vfs_intent-2.4.20-rh 2003-07-17 08:34:45.000000000 -0700
-+++ linux-2.4.20-mmonroe/kernel/ksyms.c 2003-07-17 08:35:22.000000000 -0700
+--- linux-2.4.20-rh-20.9/include/linux/fs_struct.h~vfs_intent-2.4.20-rh 2003-09-13 19:34:19.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/include/linux/fs_struct.h 2003-09-14 17:34:53.000000000 +0400
+@@ -37,10 +37,12 @@ static inline void set_fs_root(struct fs
+ write_lock(&fs->lock);
+ old_root = fs->root;
+ old_rootmnt = fs->rootmnt;
++ PIN(dentry, mnt, 1);
+ fs->rootmnt = mntget(mnt);
+ fs->root = dget(dentry);
+ write_unlock(&fs->lock);
+ if (old_root) {
++ UNPIN(old_root, old_rootmnt, 1);
+ dput(old_root);
+ mntput(old_rootmnt);
+ }
+@@ -60,10 +62,12 @@ static inline void set_fs_pwd(struct fs_
+ write_lock(&fs->lock);
+ old_pwd = fs->pwd;
+ old_pwdmnt = fs->pwdmnt;
++ PIN(dentry, mnt, 0);
+ fs->pwdmnt = mntget(mnt);
+ fs->pwd = dget(dentry);
+ write_unlock(&fs->lock);
+ if (old_pwd) {
++ UNPIN(old_pwd, old_pwdmnt, 0);
+ dput(old_pwd);
+ mntput(old_pwdmnt);
+ }
+--- linux-2.4.20-rh-20.9/kernel/ksyms.c~vfs_intent-2.4.20-rh 2003-09-14 17:34:51.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/kernel/ksyms.c 2003-09-14 17:34:53.000000000 +0400
@@ -298,6 +298,7 @@ EXPORT_SYMBOL(read_cache_page);
EXPORT_SYMBOL(set_page_dirty);
EXPORT_SYMBOL(vfs_readlink);
EXPORT_SYMBOL(page_readlink);
EXPORT_SYMBOL(page_follow_link);
EXPORT_SYMBOL(page_symlink_inode_operations);
---- linux-2.4.20/fs/exec.c~vfs_intent-2.4.20-rh 2003-07-17 08:33:09.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/exec.c 2003-07-17 08:35:22.000000000 -0700
-@@ -114,8 +114,9 @@ asmlinkage long sys_uselib(const char *
- struct file * file;
- struct nameidata nd;
- int error;
-+ struct lookup_intent it = { .it_op = IT_OPEN, .it_flags = O_RDONLY };
-
-- error = user_path_walk(library, &nd);
-+ error = user_path_walk_it(library, &nd, &it);
- if (error)
- goto out;
-
-@@ -127,7 +128,8 @@ asmlinkage long sys_uselib(const char *
- if (error)
- goto exit;
-
-- file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
-+ file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
-+ intent_release(&it);
- error = PTR_ERR(file);
- if (IS_ERR(file))
- goto out;
-@@ -382,8 +384,9 @@ struct file *open_exec(const char *name)
- struct inode *inode;
- struct file *file;
- int err = 0;
-+ struct lookup_intent it = { .it_op = IT_OPEN, .it_flags = O_RDONLY };
-
-- err = path_lookup(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
-+ err = path_lookup_it(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
- file = ERR_PTR(err);
- if (!err) {
- inode = nd.dentry->d_inode;
-@@ -395,7 +398,8 @@ struct file *open_exec(const char *name)
- err = -EACCES;
- file = ERR_PTR(err);
- if (!err) {
-- file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
-+ file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
-+ intent_release(&it);
- if (!IS_ERR(file)) {
- err = deny_write_access(file);
- if (err) {
-@@ -407,6 +411,7 @@ out:
- return file;
- }
+--- linux-2.4.20-rh-20.9/kernel/fork.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/kernel/fork.c 2003-09-14 17:34:53.000000000 +0400
+@@ -440,10 +440,13 @@ static inline struct fs_struct *__copy_f
+ fs->umask = old->umask;
+ read_lock(&old->lock);
+ fs->rootmnt = mntget(old->rootmnt);
++ PIN(old->pwd, old->pwdmnt, 0);
++ PIN(old->root, old->rootmnt, 1);
+ fs->root = dget(old->root);
+ fs->pwdmnt = mntget(old->pwdmnt);
+ fs->pwd = dget(old->pwd);
+ if (old->altroot) {
++ PIN(old->altroot, old->altrootmnt, 1);
+ fs->altrootmnt = mntget(old->altrootmnt);
+ fs->altroot = dget(old->altroot);
+ } else {
+--- linux-2.4.20-rh-20.9/kernel/exit.c~vfs_intent-2.4.20-rh 2003-09-13 19:34:35.000000000 +0400
++++ linux-2.4.20-rh-20.9-alexey/kernel/exit.c 2003-09-14 17:34:53.000000000 +0400
+@@ -345,11 +345,14 @@ static inline void __put_fs_struct(struc
+ {
+ /* No need to hold fs->lock if we are killing it */
+ if (atomic_dec_and_test(&fs->count)) {
++ UNPIN(fs->pwd, fs->pwdmnt, 0);
++ UNPIN(fs->root, fs->rootmnt, 1);
+ dput(fs->root);
+ mntput(fs->rootmnt);
+ dput(fs->pwd);
+ mntput(fs->pwdmnt);
+ if (fs->altroot) {
++ UNPIN(fs->altroot, fs->altrootmnt, 1);
+ dput(fs->altroot);
+ mntput(fs->altrootmnt);
}
-+ intent_release(&it);
- path_release(&nd);
- }
- goto out;
-@@ -1283,7 +1288,7 @@ int do_coredump(long signr, int exit_cod
- goto close_fail;
- if (!file->f_op->write)
- goto close_fail;
-- if (do_truncate(file->f_dentry, 0) != 0)
-+ if (do_truncate(file->f_dentry, 0, 0) != 0)
- goto close_fail;
-
- retval = binfmt->core_dump(signr, regs, file);
---- linux-2.4.20/fs/proc/base.c~vfs_intent-2.4.20-rh 2003-07-17 08:33:05.000000000 -0700
-+++ linux-2.4.20-mmonroe/fs/proc/base.c 2003-07-17 08:35:22.000000000 -0700
-@@ -464,6 +464,9 @@ static int proc_pid_follow_link(struct d
-
- error = inode->u.proc_i.op.proc_get_link(inode, &nd->dentry, &nd->mnt);
- nd->last_type = LAST_BIND;
-+
-+ if (nd->it != NULL)
-+ nd->it->it_int_flags |= IT_FL_FOLLOWED;
- out:
- return error;
- }
_
git://git.whamcloud.com / fs / lustre-release.git / blobdiff