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Subject[AppArmor 27/44] Add a struct vfsmount parameter to vfs_removexattr()
The vfsmount will be passed down to the LSM hook so that LSMs can compute
pathnames.

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: John Johansen <jjohansen@suse.de>

---
fs/nfsd/vfs.c | 7 ++++---
fs/xattr.c | 12 ++++++------
include/linux/xattr.h | 2 +-
3 files changed, 11 insertions(+), 10 deletions(-)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1957,6 +1957,7 @@ nfsd_get_posix_acl(struct svc_fh *fhp, i
int
nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl)
{
+ struct vfsmount *mnt;
struct inode *inode = fhp->fh_dentry->d_inode;
char *name;
void *value = NULL;
@@ -1989,14 +1990,14 @@ nfsd_set_posix_acl(struct svc_fh *fhp, i
} else
size = 0;

+ mnt = fhp->fh_export->ex_mnt;
if (size)
- error = vfs_setxattr(fhp->fh_dentry, fhp->fh_export->ex_mnt,
- name, value, size,0);
+ error = vfs_setxattr(fhp->fh_dentry, mnt, name, value, size,0);
else {
if (!S_ISDIR(inode->i_mode) && type == ACL_TYPE_DEFAULT)
error = 0;
else {
- error = vfs_removexattr(fhp->fh_dentry, name);
+ error = vfs_removexattr(fhp->fh_dentry, mnt, name);
if (error == -ENODATA)
error = 0;
}
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -165,7 +165,7 @@ vfs_listxattr(struct dentry *dentry, str
EXPORT_SYMBOL_GPL(vfs_listxattr);

int
-vfs_removexattr(struct dentry *dentry, char *name)
+vfs_removexattr(struct dentry *dentry, struct vfsmount *mnt, char *name)
{
struct inode *inode = dentry->d_inode;
int error;
@@ -438,7 +438,7 @@ sys_flistxattr(int fd, char __user *list
* Extended attribute REMOVE operations
*/
static long
-removexattr(struct dentry *d, char __user *name)
+removexattr(struct dentry *dentry, struct vfsmount *mnt, char __user *name)
{
int error;
char kname[XATTR_NAME_MAX + 1];
@@ -449,7 +449,7 @@ removexattr(struct dentry *d, char __use
if (error < 0)
return error;

- return vfs_removexattr(d, kname);
+ return vfs_removexattr(dentry, mnt, kname);
}

asmlinkage long
@@ -461,7 +461,7 @@ sys_removexattr(char __user *path, char
error = user_path_walk(path, &nd);
if (error)
return error;
- error = removexattr(nd.dentry, name);
+ error = removexattr(nd.dentry, nd.mnt, name);
path_release(&nd);
return error;
}
@@ -475,7 +475,7 @@ sys_lremovexattr(char __user *path, char
error = user_path_walk_link(path, &nd);
if (error)
return error;
- error = removexattr(nd.dentry, name);
+ error = removexattr(nd.dentry, nd.mnt, name);
path_release(&nd);
return error;
}
@@ -492,7 +492,7 @@ sys_fremovexattr(int fd, char __user *na
return error;
dentry = f->f_path.dentry;
audit_inode(NULL, dentry->d_inode);
- error = removexattr(dentry, name);
+ error = removexattr(dentry, f->f_path.mnt, name);
fput(f);
return error;
}
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -52,7 +52,7 @@ ssize_t vfs_listxattr(struct dentry *d,
size_t size);
int vfs_setxattr(struct dentry *, struct vfsmount *, char *, void *, size_t,
int);
-int vfs_removexattr(struct dentry *, char *);
+int vfs_removexattr(struct dentry *, struct vfsmount *, char *);

ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
--
-
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