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Introduce path_put() 

* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Blunck 2008-02-14 19:34:35 -08:00 committed by Linus Torvalds
parent 4ac9137858
commit 1d957f9bf8
41 changed files with 125 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/kernel/osf_sys.c
View File

@ -260,7 +260,7 @@ osf_statfs(char __user *path, struct osf_statfs __user *buffer, unsigned long bu
retval = user_path_walk(path, &nd);
if (!retval) {
retval = do_osf_statfs(nd.path.dentry, buffer, bufsiz);
path_release(&nd);
path_put(&nd.path);
}
return retval;
}

6
arch/mips/kernel/sysirix.c
View File

@ -711,7 +711,7 @@ asmlinkage int irix_statfs(const char __user *path,
}
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -1385,7 +1385,7 @@ asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
error |= __put_user(0, &buf->f_fstr[i]);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -1636,7 +1636,7 @@ asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *
error |= __put_user(0, &buf->f_fstr[i]);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}

2
arch/parisc/hpux/sys_hpux.c
View File

@ -222,7 +222,7 @@ asmlinkage long hpux_statfs(const char __user *path,
error = vfs_statfs_hpux(nd.path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
path_put(&nd.path);
}
return error;
}

2
arch/powerpc/platforms/cell/spufs/syscalls.c
View File

@ -73,7 +73,7 @@ static long do_spu_create(const char __user *pathname, unsigned int flags,
LOOKUP_OPEN|LOOKUP_CREATE, &nd);
if (!ret) {
ret = spufs_create(&nd, flags, mode, neighbor);
path_release(&nd);
path_put(&nd.path);
}
putname(tmp);
}

4
arch/sparc64/solaris/fs.c
View File

@ -436,7 +436,7 @@ asmlinkage int solaris_statvfs(u32 path, u32 buf)
if (!error) {
struct inode *inode = nd.path.dentry->d_inode;
error = report_statvfs(nd.path.mnt, inode, buf);
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -466,7 +466,7 @@ asmlinkage int solaris_statvfs64(u32 path, u32 buf)
if (!error) {
struct inode *inode = nd.path.dentry->d_inode;
error = report_statvfs64(nd.path.mnt, inode, buf);
path_release(&nd);
path_put(&nd.path);
}
unlock_kernel();
return error;

2
drivers/md/dm-table.c
View File

@ -375,7 +375,7 @@ static int lookup_device(const char *path, dev_t *dev)
*dev = inode->i_rdev;
out:
path_release(&nd);
path_put(&nd.path);
return r;
}

4
drivers/mtd/mtdsuper.c
View File

@ -203,7 +203,7 @@ int get_sb_mtd(struct file_system_type *fs_type, int flags,
goto not_an_MTD_device;
mtdnr = iminor(nd.path.dentry->d_inode);
path_release(&nd);
path_put(&nd.path);
return get_sb_mtd_nr(fs_type, flags, dev_name, data, mtdnr, fill_super,
mnt);
@ -214,7 +214,7 @@ int get_sb_mtd(struct file_system_type *fs_type, int flags,
"MTD: Attempt to mount non-MTD device \"%s\"\n",
dev_name);
out:
path_release(&nd);
path_put(&nd.path);
return ret;
}

2
fs/afs/mntpt.c
View File

@ -227,7 +227,7 @@ static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
newmnt = afs_mntpt_do_automount(nd->path.dentry);
if (IS_ERR(newmnt)) {
path_release(nd);
path_put(&nd->path);
return (void *)newmnt;
}

2
fs/autofs4/root.c
View File

@ -383,7 +383,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
return NULL;
out_error:
path_release(nd);
path_put(&nd->path);
return ERR_PTR(status);
}

2
fs/block_dev.c
View File

@ -1409,7 +1409,7 @@ struct block_device *lookup_bdev(const char *path)
if (!bdev)
goto fail;
out:
path_release(&nd);
path_put(&nd.path);
return bdev;
fail:
bdev = ERR_PTR(error);

2
fs/cifs/cifs_dfs_ref.c
View File

@ -368,7 +368,7 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
cFYI(1, ("leaving %s" , __FUNCTION__));
return ERR_PTR(rc);
out_err:
path_release(nd);
path_put(&nd->path);
goto out;
}

4
fs/coda/pioctl.c
View File

@ -80,7 +80,7 @@ static int coda_pioctl(struct inode * inode, struct file * filp,
/* return if it is not a Coda inode */
if ( target_inode->i_sb != inode->i_sb ) {
path_release(&nd);
path_put(&nd.path);
return -EINVAL;
}
@ -89,7 +89,7 @@ static int coda_pioctl(struct inode * inode, struct file * filp,
error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
path_release(&nd);
path_put(&nd.path);
return error;
}

4
fs/compat.c
View File

@ -244,7 +244,7 @@ asmlinkage long compat_sys_statfs(const char __user *path, struct compat_statfs
error = vfs_statfs(nd.path.dentry, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -312,7 +312,7 @@ asmlinkage long compat_sys_statfs64(const char __user *path, compat_size_t sz, s
error = vfs_statfs(nd.path.dentry, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
path_release(&nd);
path_put(&nd.path);
}
return error;
}

4
fs/configfs/symlink.c
View File

@ -103,7 +103,7 @@ static int get_target(const char *symname, struct nameidata *nd,
*target = configfs_get_config_item(nd->path.dentry);
if (!*target) {
ret = -ENOENT;
path_release(nd);
path_put(&nd->path);
}
} else
ret = -EPERM;
@ -141,7 +141,7 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna
ret = create_link(parent_item, target_item, dentry);
config_item_put(target_item);
path_release(&nd);
path_put(&nd.path);
out_put:
config_item_put(parent_item);

2
fs/dquot.c
View File

@ -1643,7 +1643,7 @@ int vfs_quota_on(struct super_block *sb, int type, int format_id, char *path)
error = vfs_quota_on_inode(nd.path.dentry->d_inode, type,
format_id);
out_path:
path_release(&nd);
path_put(&nd.path);
return error;
}

2
fs/ecryptfs/main.c
View File

@ -526,7 +526,7 @@ static int ecryptfs_read_super(struct super_block *sb, const char *dev_name)
rc = 0;
goto out;
out_free:
path_release(&nd);
path_put(&nd.path);
out:
return rc;
}

4
fs/exec.c
View File

@ -148,7 +148,7 @@ asmlinkage long sys_uselib(const char __user * library)
return error;
exit:
release_open_intent(&nd);
path_release(&nd);
path_put(&nd.path);
goto out;
}
@ -672,7 +672,7 @@ struct file *open_exec(const char *name)
}
}
release_open_intent(&nd);
path_release(&nd);
path_put(&nd.path);
}
goto out;
}

4
fs/ext3/super.c
View File

@ -2759,7 +2759,7 @@ static int ext3_quota_on(struct super_block *sb, int type, int format_id,
return err;
/* Quotafile not on the same filesystem? */
if (nd.path.mnt->mnt_sb != sb) {
path_release(&nd);
path_put(&nd.path);
return -EXDEV;
}
/* Quotafile not of fs root? */
@ -2767,7 +2767,7 @@ static int ext3_quota_on(struct super_block *sb, int type, int format_id,
printk(KERN_WARNING
"EXT3-fs: Quota file not on filesystem root. "
"Journalled quota will not work.\n");
path_release(&nd);
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path);
}

4
fs/ext4/super.c
View File

@ -3159,7 +3159,7 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
return err;
/* Quotafile not on the same filesystem? */
if (nd.path.mnt->mnt_sb != sb) {
path_release(&nd);
path_put(&nd.path);
return -EXDEV;
}
/* Quotafile not of fs root? */
@ -3167,7 +3167,7 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
printk(KERN_WARNING
"EXT4-fs: Quota file not on filesystem root. "
"Journalled quota will not work.\n");
path_release(&nd);
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path);
}

2
fs/gfs2/ops_fstype.c
View File

@ -900,7 +900,7 @@ static struct super_block* get_gfs2_sb(const char *dev_name)
"mount point %s\n", dev_name);
free_nd:
path_release(&nd);
path_put(&nd.path);
out:
return sb;
}

4
fs/inotify_user.c
View File

@ -367,7 +367,7 @@ static int find_inode(const char __user *dirname, struct nameidata *nd,
/* you can only watch an inode if you have read permissions on it */
error = vfs_permission(nd, MAY_READ);
if (error)
path_release(nd);
path_put(&nd->path);
return error;
}
@ -676,7 +676,7 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
ret = create_watch(dev, inode, mask);
mutex_unlock(&dev->up_mutex);
path_release(&nd);
path_put(&nd.path);
fput_and_out:
fput_light(filp, fput_needed);
return ret;

56
fs/namei.c
View File

@ -362,11 +362,18 @@ int deny_write_access(struct file * file)
return 0;
}
void path_release(struct nameidata *nd)
/**
* path_put - put a reference to a path
* @path: path to put the reference to
*
* Given a path decrement the reference count to the dentry and the vfsmount.
*/
void path_put(struct path *path)
{
dput(nd->path.dentry);
mntput(nd->path.mnt);
dput(path->dentry);
mntput(path->mnt);
}
EXPORT_SYMBOL(path_put);
/**
* release_open_intent - free up open intent resources
@ -551,7 +558,7 @@ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *l
goto fail;
if (*link == '/') {
path_release(nd);
path_put(&nd->path);
if (!walk_init_root(link, nd))
/* weird __emul_prefix() stuff did it */
goto out;
@ -567,18 +574,18 @@ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *l
*/
name = __getname();
if (unlikely(!name)) {
path_release(nd);
path_put(&nd->path);
return -ENOMEM;
}
strcpy(name, nd->last.name);
nd->last.name = name;
return 0;
fail:
path_release(nd);
path_put(&nd->path);
return PTR_ERR(link);
}
static inline void dput_path(struct path *path, struct nameidata *nd)
static void path_put_conditional(struct path *path, struct nameidata *nd)
{
dput(path->dentry);
if (path->mnt != nd->path.mnt)
@ -651,8 +658,8 @@ static inline int do_follow_link(struct path *path, struct nameidata *nd)
nd->depth--;
return err;
loop:
dput_path(path, nd);
path_release(nd);
path_put_conditional(path, nd);
path_put(&nd->path);
return err;
}
@ -993,10 +1000,10 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
return_base:
return 0;
out_dput:
dput_path(&next, nd);
path_put_conditional(&next, nd);
break;
}
path_release(nd);
path_put(&nd->path);
return_err:
return err;
}
@ -1070,7 +1077,7 @@ static int __emul_lookup_dentry(const char *name, struct nameidata *nd)
mntput(old_mnt);
return 1;
}
path_release(nd);
path_put(&nd->path);
}
nd->path.dentry = old_dentry;
nd->path.mnt = old_mnt;
@ -1230,7 +1237,7 @@ static int __path_lookup_intent_open(int dfd, const char *name,
if (IS_ERR(nd->intent.open.file)) {
if (err == 0) {
err = PTR_ERR(nd->intent.open.file);
path_release(nd);
path_put(&nd->path);
}
} else if (err != 0)
release_open_intent(nd);
@ -1806,11 +1813,11 @@ int open_namei(int dfd, const char *pathname, int flag,
return 0;
exit_dput:
dput_path(&path, nd);
path_put_conditional(&path, nd);
exit:
if (!IS_ERR(nd->intent.open.file))
release_open_intent(nd);
path_release(nd);
path_put(&nd->path);
return error;
do_link:
@ -1979,7 +1986,7 @@ asmlinkage long sys_mknodat(int dfd, const char __user *filename, int mode,
dput(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_release(&nd);
path_put(&nd.path);
out:
putname(tmp);
@ -2039,7 +2046,7 @@ asmlinkage long sys_mkdirat(int dfd, const char __user *pathname, int mode)
dput(dentry);
out_unlock:
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_release(&nd);
path_put(&nd.path);
out:
putname(tmp);
out_err:
@ -2147,7 +2154,7 @@ static long do_rmdir(int dfd, const char __user *pathname)
exit2:
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
exit1:
path_release(&nd);
path_put(&nd.path);
exit:
putname(name);
return error;
@ -2231,7 +2238,7 @@ static long do_unlinkat(int dfd, const char __user *pathname)
if (inode)
iput(inode); /* truncate the inode here */
exit1:
path_release(&nd);
path_put(&nd.path);
exit:
putname(name);
return error;
@ -2308,7 +2315,7 @@ asmlinkage long sys_symlinkat(const char __user *oldname,
dput(dentry);
out_unlock:
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_release(&nd);
path_put(&nd.path);
out:
putname(to);
out_putname:
@ -2404,9 +2411,9 @@ asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
out_unlock:
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
out_release:
path_release(&nd);
path_put(&nd.path);
out:
path_release(&old_nd);
path_put(&old_nd.path);
exit:
putname(to);
@ -2634,9 +2641,9 @@ static int do_rename(int olddfd, const char *oldname,
exit3:
unlock_rename(new_dir, old_dir);
exit2:
path_release(&newnd);
path_put(&newnd.path);
exit1:
path_release(&oldnd);
path_put(&oldnd.path);
exit:
return error;
}
@ -2810,7 +2817,6 @@ EXPORT_SYMBOL(page_symlink);
EXPORT_SYMBOL(page_symlink_inode_operations);
EXPORT_SYMBOL(path_lookup);
EXPORT_SYMBOL(vfs_path_lookup);
EXPORT_SYMBOL(path_release);
EXPORT_SYMBOL(permission);
EXPORT_SYMBOL(vfs_permission);
EXPORT_SYMBOL(file_permission);

20
fs/namespace.c
View File

@ -1007,7 +1007,7 @@ static noinline int do_loopback(struct nameidata *nd, char *old_name,
out:
up_write(&namespace_sem);
path_release(&old_nd);
path_put(&old_nd.path);
return err;
}
@ -1126,8 +1126,8 @@ static noinline int do_move_mount(struct nameidata *nd, char *old_name)
out:
up_write(&namespace_sem);
if (!err)
path_release(&parent_nd);
path_release(&old_nd);
path_put(&parent_nd.path);
path_put(&old_nd.path);
return err;
}
@ -1512,7 +1512,7 @@ long do_mount(char *dev_name, char *dir_name, char *type_page,
retval = do_new_mount(&nd, type_page, flags, mnt_flags,
dev_name, data_page);
dput_out:
path_release(&nd);
path_put(&nd.path);
return retval;
}
@ -1768,7 +1768,7 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
error = security_sb_pivotroot(&old_nd, &new_nd);
if (error) {
path_release(&old_nd);
path_put(&old_nd.path);
goto out1;
}
@ -1831,15 +1831,15 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
chroot_fs_refs(&user_nd, &new_nd);
security_sb_post_pivotroot(&user_nd, &new_nd);
error = 0;
path_release(&root_parent);
path_release(&parent_nd);
path_put(&root_parent.path);
path_put(&parent_nd.path);
out2:
mutex_unlock(&old_nd.path.dentry->d_inode->i_mutex);
up_write(&namespace_sem);
path_release(&user_nd);
path_release(&old_nd);
path_put(&user_nd.path);
path_put(&old_nd.path);
out1:
path_release(&new_nd);
path_put(&new_nd.path);
out0:
unlock_kernel();
return error;

2
fs/nfs/namespace.c
View File

@ -148,7 +148,7 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
dprintk("<-- nfs_follow_mountpoint() = %d\n", err);
return ERR_PTR(err);
out_err:
path_release(nd);
path_put(&nd->path);
goto out;
out_follow:
while (d_mountpoint(nd->path.dentry) &&

2
fs/nfsctl.c
View File

@ -43,7 +43,7 @@ static struct file *do_open(char *name, int flags)
if (!error)
return dentry_open(nd.path.dentry, nd.path.mnt, flags);
path_release(&nd);
path_put(&nd.path);
return ERR_PTR(error);
}

10
fs/nfsd/export.c
View File

@ -177,7 +177,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
cache_put(&ek->h, &svc_expkey_cache);
else
err = -ENOMEM;
path_release(&nd);
path_put(&nd.path);
}
cache_flush();
out:
@ -630,7 +630,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
kfree(exp.ex_uuid);
kfree(exp.ex_path);
if (nd.path.dentry)
path_release(&nd);
path_put(&nd.path);
out_no_path:
if (dom)
auth_domain_put(dom);
@ -1098,7 +1098,7 @@ exp_export(struct nfsctl_export *nxp)
cache_put(&fsid_key->h, &svc_expkey_cache);
if (clp)
auth_domain_put(clp);
path_release(&nd);
path_put(&nd.path);
out_unlock:
exp_writeunlock();
out:
@ -1150,7 +1150,7 @@ exp_unexport(struct nfsctl_export *nxp)
err = -EINVAL;
exp = exp_get_by_name(dom, nd.path.mnt, nd.path.dentry, NULL);
path_release(&nd);
path_put(&nd.path);
if (IS_ERR(exp))
goto out_domain;
@ -1209,7 +1209,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
fh_put(&fh);
exp_put(exp);
out:
path_release(&nd);
path_put(&nd.path);
return err;
}

2
fs/nfsd/nfs4recover.c
View File

@ -415,5 +415,5 @@ nfsd4_shutdown_recdir(void)
if (!rec_dir_init)
return;
rec_dir_init = 0;
path_release(&rec_dir);
path_put(&rec_dir.path);
}

2
fs/nfsd/nfs4state.c
View File

@ -3265,7 +3265,7 @@ nfs4_reset_recoverydir(char *recdir)
nfs4_set_recdir(recdir);
status = 0;
}
path_release(&nd);
path_put(&nd.path);
return status;
}

22
fs/open.c
View File

@ -130,7 +130,7 @@ asmlinkage long sys_statfs(const char __user * path, struct statfs __user * buf)
error = vfs_statfs_native(nd.path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -149,7 +149,7 @@ asmlinkage long sys_statfs64(const char __user *path, size_t sz, struct statfs64
error = vfs_statfs64(nd.path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -277,7 +277,7 @@ static long do_sys_truncate(const char __user * path, loff_t length)
put_write_and_out:
put_write_access(inode);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -462,7 +462,7 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
res = -EROFS;
out_path_release:
path_release(&nd);
path_put(&nd.path);
out:
current->fsuid = old_fsuid;
current->fsgid = old_fsgid;
@ -493,7 +493,7 @@ asmlinkage long sys_chdir(const char __user * filename)
set_fs_pwd(current->fs, nd.path.mnt, nd.path.dentry);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -549,7 +549,7 @@ asmlinkage long sys_chroot(const char __user * filename)
set_fs_altroot();
error = 0;
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -621,7 +621,7 @@ asmlinkage long sys_fchmodat(int dfd, const char __user *filename,
mutex_unlock(&inode->i_mutex);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -676,7 +676,7 @@ asmlinkage long sys_chown(const char __user * filename, uid_t user, gid_t group)
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -696,7 +696,7 @@ asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -710,7 +710,7 @@ asmlinkage long sys_lchown(const char __user * filename, uid_t user, gid_t group
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@ -894,7 +894,7 @@ struct file *nameidata_to_filp(struct nameidata *nd, int flags)
filp = __dentry_open(nd->path.dentry, nd->path.mnt, flags, filp,
NULL);
else
path_release(nd);
path_put(&nd->path);
return filp;
}

2
fs/proc/base.c
View File

@ -1164,7 +1164,7 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
int error = -EACCES;
/* We don't need a base pointer in the /proc filesystem */
path_release(nd);
path_put(&nd->path);
/* Are we allowed to snoop on the tasks file descriptors? */
if (!proc_fd_access_allowed(inode))

8
fs/reiserfs/super.c
View File

@ -2027,20 +2027,20 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
return err;
/* Quotafile not on the same filesystem? */
if (nd.path.mnt->mnt_sb != sb) {
path_release(&nd);
path_put(&nd.path);
return -EXDEV;
}
/* We must not pack tails for quota files on reiserfs for quota IO to work */
if (!REISERFS_I(nd.path.dentry->d_inode)->i_flags & i_nopack_mask) {
reiserfs_warning(sb,
"reiserfs: Quota file must have tail packing disabled.");
path_release(&nd);
path_put(&nd.path);
return -EINVAL;
}
/* Not journalling quota? No more tests needed... */
if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
!REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
path_release(&nd);
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path);
}
/* Quotafile not of fs root? */
@ -2048,7 +2048,7 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
reiserfs_warning(sb,
"reiserfs: Quota file not on filesystem root. "
"Journalled quota will not work.");
path_release(&nd);
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path);
}

6
fs/stat.c
View File

@ -63,7 +63,7 @@ int vfs_stat_fd(int dfd, char __user *name, struct kstat *stat)
error = __user_walk_fd(dfd, name, LOOKUP_FOLLOW, &nd);
if (!error) {
error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -83,7 +83,7 @@ int vfs_lstat_fd(int dfd, char __user *name, struct kstat *stat)
error = __user_walk_fd(dfd, name, 0, &nd);
if (!error) {
error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@ -313,7 +313,7 @@ asmlinkage long sys_readlinkat(int dfd, const char __user *path,
buf, bufsiz);
}
}
path_release(&nd);
path_put(&nd.path);
}
return error;
}

2
fs/utimes.c
View File

@ -138,7 +138,7 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
if (f)
fput(f);
else
path_release(&nd);
path_put(&nd.path);
out:
return error;
}

16
fs/xattr.c
View File

@ -263,7 +263,7 @@ sys_setxattr(char __user *path, char __user *name, void __user *value,
if (error)
return error;
error = setxattr(nd.path.dentry, name, value, size, flags);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -278,7 +278,7 @@ sys_lsetxattr(char __user *path, char __user *name, void __user *value,
if (error)
return error;
error = setxattr(nd.path.dentry, name, value, size, flags);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -348,7 +348,7 @@ sys_getxattr(char __user *path, char __user *name, void __user *value,
if (error)
return error;
error = getxattr(nd.path.dentry, name, value, size);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -363,7 +363,7 @@ sys_lgetxattr(char __user *path, char __user *name, void __user *value,
if (error)
return error;
error = getxattr(nd.path.dentry, name, value, size);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -422,7 +422,7 @@ sys_listxattr(char __user *path, char __user *list, size_t size)
if (error)
return error;
error = listxattr(nd.path.dentry, list, size);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -436,7 +436,7 @@ sys_llistxattr(char __user *path, char __user *list, size_t size)
if (error)
return error;
error = listxattr(nd.path.dentry, list, size);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -483,7 +483,7 @@ sys_removexattr(char __user *path, char __user *name)
if (error)
return error;
error = removexattr(nd.path.dentry, name);
path_release(&nd);
path_put(&nd.path);
return error;
}
@ -497,7 +497,7 @@ sys_lremovexattr(char __user *path, char __user *name)
if (error)
return error;
error = removexattr(nd.path.dentry, name);
path_release(&nd);
path_put(&nd.path);
return error;
}

2
fs/xfs/linux-2.6/xfs_ioctl.c
View File

@ -94,7 +94,7 @@ xfs_find_handle(
ASSERT(nd.path.dentry);
ASSERT(nd.path.dentry->d_inode);
inode = igrab(nd.path.dentry->d_inode);
path_release(&nd);
path_put(&nd.path);
break;
}

1
include/linux/namei.h
View File

@ -66,7 +66,6 @@ extern int __user_walk_fd(int dfd, const char __user *, unsigned, struct nameida
extern int path_lookup(const char *, unsigned, struct nameidata *);
extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
const char *, unsigned int, struct nameidata *);
extern void path_release(struct nameidata *);
extern int __user_path_lookup_open(const char __user *, unsigned lookup_flags, struct nameidata *nd, int open_flags);
extern int path_lookup_open(int dfd, const char *name, unsigned lookup_flags, struct nameidata *, int open_flags);

2
include/linux/path.h
View File

@ -9,4 +9,6 @@ struct path {
struct dentry *dentry;
};
extern void path_put(struct path *);
#endif /* _LINUX_PATH_H */

12
kernel/audit_tree.c
View File

@ -550,7 +550,7 @@ void audit_trim_trees(void)
goto skip_it;
root_mnt = collect_mounts(nd.path.mnt, nd.path.dentry);
path_release(&nd);
path_put(&nd.path);
if (!root_mnt)
goto skip_it;
@ -642,7 +642,7 @@ int audit_add_tree_rule(struct audit_krule *rule)
if (err)
goto Err;
mnt = collect_mounts(nd.path.mnt, nd.path.dentry);
path_release(&nd);
path_put(&nd.path);
if (!mnt) {
err = -ENOMEM;
goto Err;
@ -702,7 +702,7 @@ int audit_tag_tree(char *old, char *new)
if (err)
return err;
tagged = collect_mounts(nd.path.mnt, nd.path.dentry);
path_release(&nd);
path_put(&nd.path);
if (!tagged)
return -ENOMEM;
@ -713,7 +713,7 @@ int audit_tag_tree(char *old, char *new)
}
mnt = mntget(nd.path.mnt);
dentry = dget(nd.path.dentry);
path_release(&nd);
path_put(&nd.path);
if (dentry == tagged->mnt_root && dentry == mnt->mnt_root)
follow_up(&mnt, &dentry);
@ -744,13 +744,13 @@ int audit_tag_tree(char *old, char *new)
spin_lock(&vfsmount_lock);
if (!is_under(mnt, dentry, &nd)) {
spin_unlock(&vfsmount_lock);
path_release(&nd);
path_put(&nd.path);
put_tree(tree);
mutex_lock(&audit_filter_mutex);
continue;
}
spin_unlock(&vfsmount_lock);
path_release(&nd);
path_put(&nd.path);
list_for_each_entry(p, &list, mnt_list) {
failed = tag_chunk(p->mnt_root->d_inode, tree);

4
kernel/auditfilter.c
View File

@ -1161,11 +1161,11 @@ static int audit_get_nd(char *path, struct nameidata **ndp,
static void audit_put_nd(struct nameidata *ndp, struct nameidata *ndw)
{
if (ndp) {
path_release(ndp);
path_put(&ndp->path);
kfree(ndp);
}
if (ndw) {
path_release(ndw);
path_put(&ndw->path);
kfree(ndw);
}
}

2
net/sunrpc/rpc_pipe.c
View File

@ -495,7 +495,7 @@ rpc_lookup_parent(char *path, struct nameidata *nd)
static void
rpc_release_path(struct nameidata *nd)
{
path_release(nd);
path_put(&nd->path);
rpc_put_mount();
}

6
net/unix/af_unix.c
View File

@ -727,7 +727,7 @@ static struct sock *unix_find_other(struct net *net,
if (u->sk_type == type)
touch_atime(nd.path.mnt, nd.path.dentry);
path_release(&nd);
path_put(&nd.path);
err=-EPROTOTYPE;
if (u->sk_type != type) {
@ -748,7 +748,7 @@ static struct sock *unix_find_other(struct net *net,
return u;
put_fail:
path_release(&nd);
path_put(&nd.path);
fail:
*error=err;
return NULL;
@ -862,7 +862,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
dput(dentry);
out_mknod_unlock:
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_release(&nd);
path_put(&nd.path);
out_mknod_parent:
if (err==-EEXIST)
err=-EADDRINUSE;