The vfsmount will be passed down to the LSM hook so that LSMs can compute
pathnames.
Signed-off-by: Tony Jones <[email protected]>
Signed-off-by: Andreas Gruenbacher <[email protected]>
Signed-off-by: John Johansen <[email protected]>
---
fs/nfsd/nfs4xdr.c | 2 +-
fs/nfsd/vfs.c | 21 ++++++++++++---------
fs/unionfs/copyup.c | 2 +-
fs/unionfs/xattr.c | 4 +++-
fs/xattr.c | 14 ++++++++------
include/linux/nfsd/nfsd.h | 3 ++-
include/linux/xattr.h | 2 +-
7 files changed, 28 insertions(+), 20 deletions(-)
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1501,7 +1501,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, s
}
if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
| FATTR4_WORD0_SUPPORTED_ATTRS)) {
- err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
+ err = nfsd4_get_nfs4_acl(rqstp, dentry, exp->ex_path.mnt, &acl);
aclsupport = (err == 0);
if (bmval0 & FATTR4_WORD0_ACL) {
if (err == -EOPNOTSUPP)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -408,11 +408,12 @@ out_nfserr:
#if defined(CONFIG_NFSD_V2_ACL) || \
defined(CONFIG_NFSD_V3_ACL) || \
defined(CONFIG_NFSD_V4)
-static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf)
+static ssize_t nfsd_getxattr(struct dentry *dentry, struct vfsmount *mnt,
+ char *key, void **buf)
{
ssize_t buflen;
- buflen = vfs_getxattr(dentry, key, NULL, 0);
+ buflen = vfs_getxattr(dentry, mnt, key, NULL, 0);
if (buflen <= 0)
return buflen;
@@ -420,7 +421,7 @@ static ssize_t nfsd_getxattr(struct dent
if (!*buf)
return -ENOMEM;
- return vfs_getxattr(dentry, key, *buf, buflen);
+ return vfs_getxattr(dentry, mnt, key, *buf, buflen);
}
#endif
@@ -501,13 +502,13 @@ out_nfserr:
}
static struct posix_acl *
-_get_posix_acl(struct dentry *dentry, char *key)
+_get_posix_acl(struct dentry *dentry, struct vfsmount *mnt, char *key)
{
void *buf = NULL;
struct posix_acl *pacl = NULL;
int buflen;
- buflen = nfsd_getxattr(dentry, key, &buf);
+ buflen = nfsd_getxattr(dentry, mnt, key, &buf);
if (!buflen)
buflen = -ENODATA;
if (buflen <= 0)
@@ -519,14 +520,15 @@ _get_posix_acl(struct dentry *dentry, ch
}
int
-nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_acl **acl)
+nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
+ struct vfsmount *mnt, struct nfs4_acl **acl)
{
struct inode *inode = dentry->d_inode;
int error = 0;
struct posix_acl *pacl = NULL, *dpacl = NULL;
unsigned int flags = 0;
- pacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_ACCESS);
+ pacl = _get_posix_acl(dentry, mnt, POSIX_ACL_XATTR_ACCESS);
if (IS_ERR(pacl) && PTR_ERR(pacl) == -ENODATA)
pacl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
if (IS_ERR(pacl)) {
@@ -536,7 +538,7 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqst
}
if (S_ISDIR(inode->i_mode)) {
- dpacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_DEFAULT);
+ dpacl = _get_posix_acl(dentry, mnt, POSIX_ACL_XATTR_DEFAULT);
if (IS_ERR(dpacl) && PTR_ERR(dpacl) == -ENODATA)
dpacl = NULL;
else if (IS_ERR(dpacl)) {
@@ -2017,7 +2019,8 @@ nfsd_get_posix_acl(struct svc_fh *fhp, i
return ERR_PTR(-EOPNOTSUPP);
}
- size = nfsd_getxattr(fhp->fh_dentry, name, &value);
+ size = nfsd_getxattr(fhp->fh_dentry, fhp->fh_export->ex_path.mnt, name,
+ &value);
if (size < 0)
return ERR_PTR(size);
--- a/fs/unionfs/copyup.c
+++ b/fs/unionfs/copyup.c
@@ -72,7 +72,7 @@ static int copyup_xattrs(struct dentry *
/* Lock here since vfs_getxattr doesn't lock for us */
mutex_lock(&old_lower_dentry->d_inode->i_mutex);
- size = vfs_getxattr(old_lower_dentry, name_list,
+ size = vfs_getxattr(old_lower_dentry, old_lower_mnt, name_list,
attr_value, XATTR_SIZE_MAX);
mutex_unlock(&old_lower_dentry->d_inode->i_mutex);
if (size < 0) {
--- a/fs/unionfs/xattr.c
+++ b/fs/unionfs/xattr.c
@@ -43,6 +43,7 @@ ssize_t unionfs_getxattr(struct dentry *
size_t size)
{
struct dentry *lower_dentry = NULL;
+ struct vfsmount *lower_mnt;
int err = -EOPNOTSUPP;
unionfs_read_lock(dentry->d_sb);
@@ -54,8 +55,9 @@ ssize_t unionfs_getxattr(struct dentry *
}
lower_dentry = unionfs_lower_dentry(dentry);
+ lower_mnt = unionfs_lower_mnt(dentry);
- err = vfs_getxattr(lower_dentry, (char *) name, value, size);
+ err = vfs_getxattr(lower_dentry, lower_mnt, (char *) name, value, size);
out:
unionfs_check_dentry(dentry);
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -131,7 +131,8 @@ out_noalloc:
EXPORT_SYMBOL_GPL(xattr_getsecurity);
ssize_t
-vfs_getxattr(struct dentry *dentry, char *name, void *value, size_t size)
+vfs_getxattr(struct dentry *dentry, struct vfsmount *mnt, char *name,
+ void *value, size_t size)
{
struct inode *inode = dentry->d_inode;
int error;
@@ -316,7 +317,8 @@ out_fput:
* Extended attribute GET operations
*/
static ssize_t
-getxattr(struct dentry *d, char __user *name, void __user *value, size_t size)
+getxattr(struct dentry *dentry, struct vfsmount *mnt, char __user *name,
+ void __user *value, size_t size)
{
ssize_t error;
void *kvalue = NULL;
@@ -336,7 +338,7 @@ getxattr(struct dentry *d, char __user *
return -ENOMEM;
}
- error = vfs_getxattr(d, kname, kvalue, size);
+ error = vfs_getxattr(dentry, mnt, kname, kvalue, size);
if (error > 0) {
if (size && copy_to_user(value, kvalue, error))
error = -EFAULT;
@@ -359,7 +361,7 @@ sys_getxattr(char __user *path, char __u
error = user_path_walk(path, &nd);
if (error)
return error;
- error = getxattr(nd.path.dentry, name, value, size);
+ error = getxattr(nd.path.dentry, nd.path.mnt, name, value, size);
path_put(&nd.path);
return error;
}
@@ -374,7 +376,7 @@ sys_lgetxattr(char __user *path, char __
error = user_path_walk_link(path, &nd);
if (error)
return error;
- error = getxattr(nd.path.dentry, name, value, size);
+ error = getxattr(nd.path.dentry, nd.path.mnt, name, value, size);
path_put(&nd.path);
return error;
}
@@ -389,7 +391,7 @@ sys_fgetxattr(int fd, char __user *name,
if (!f)
return error;
audit_inode(NULL, f->f_path.dentry);
- error = getxattr(f->f_path.dentry, name, value, size);
+ error = getxattr(f->f_path.dentry, f->f_path.mnt, name, value, size);
fput(f);
return error;
}
--- a/include/linux/nfsd/nfsd.h
+++ b/include/linux/nfsd/nfsd.h
@@ -78,7 +78,8 @@ __be32 nfsd_setattr(struct svc_rqst *,
#ifdef CONFIG_NFSD_V4
__be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
struct nfs4_acl *);
-int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);
+int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *,
+ struct vfsmount *mnt, struct nfs4_acl **);
#endif /* CONFIG_NFSD_V4 */
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -47,7 +47,7 @@ struct xattr_handler {
};
ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
-ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t);
+ssize_t vfs_getxattr(struct dentry *, struct vfsmount *, char *, void *, size_t);
ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
int vfs_setxattr(struct dentry *, struct vfsmount *, char *, void *, size_t,
int);
--
--
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