FROMLIST: Add flags option to get xattr method paired to __vfs_getxattr
Add a flag option to get xattr method that could have a bit flag of
XATTR_NOSECURITY passed to it. XATTR_NOSECURITY is generally then
set in the __vfs_getxattr path when called by security
infrastructure.
This handles the case of a union filesystem driver that is being
requested by the security layer to report back the xattr data.
For the use case where access is to be blocked by the security layer.
The path then could be security(dentry) ->
__vfs_getxattr(dentry...XATTR_NOSECURITY) ->
handler->get(dentry...XATTR_NOSECURITY) ->
__vfs_getxattr(lower_dentry...XATTR_NOSECURITY) ->
lower_handler->get(lower_dentry...XATTR_NOSECURITY)
which would report back through the chain data and success as
expected, the logging security layer at the top would have the
data to determine the access permissions and report back the target
context that was blocked.
Without the get handler flag, the path on a union filesystem would be
the errant security(dentry) -> __vfs_getxattr(dentry) ->
handler->get(dentry) -> vfs_getxattr(lower_dentry) -> nested ->
security(lower_dentry, log off) -> lower_handler->get(lower_dentry)
which would report back through the chain no data, and -EACCES.
For selinux for both cases, this would translate to a correctly
determined blocked access. In the first case with this change a correct avc
log would be reported, in the second legacy case an incorrect avc log
would be reported against an uninitialized u:object_r:unlabeled:s0
context making the logs cosmetically useless for audit2allow.
This patch series is inert and is the wide-spread addition of the
flags option for xattr functions, and a replacement of __vfs_getxattr
with __vfs_getxattr(...XATTR_NOSECURITY).
Bug: 204981027
Link: https://lore.kernel.org/lkml/20211117015806.2192263-2-dvander@google.com
Change-Id: Id2c6fa6eeb2b5cca5a11e0cd02a3fbf2a5fcbef4
Signed-off-by: David Anderson <dvander@google.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index c381499..7522938 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -217,7 +217,8 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep,
static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
struct v9fs_session_info *v9ses;
struct posix_acl *acl;
diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
index ee33184..57f88b9 100644
--- a/fs/9p/xattr.c
+++ b/fs/9p/xattr.c
@@ -149,7 +149,8 @@ ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
static int v9fs_xattr_handler_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
const char *full_name = xattr_full_name(handler, name);
diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index 7751b0b..172013d 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -36,7 +36,7 @@ static const struct afs_operation_ops afs_fetch_acl_operation = {
static int afs_xattr_get_acl(const struct xattr_handler *handler,
struct dentry *dentry,
struct inode *inode, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
@@ -138,7 +138,7 @@ static const struct afs_operation_ops yfs_fetch_opaque_acl_operation = {
static int afs_xattr_get_yfs(const struct xattr_handler *handler,
struct dentry *dentry,
struct inode *inode, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
@@ -268,7 +268,7 @@ static const struct xattr_handler afs_xattr_yfs_handler = {
static int afs_xattr_get_cell(const struct xattr_handler *handler,
struct dentry *dentry,
struct inode *inode, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
struct afs_vnode *vnode = AFS_FS_I(inode);
struct afs_cell *cell = vnode->volume->cell;
@@ -295,7 +295,7 @@ static const struct xattr_handler afs_xattr_afs_cell_handler = {
static int afs_xattr_get_fid(const struct xattr_handler *handler,
struct dentry *dentry,
struct inode *inode, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
struct afs_vnode *vnode = AFS_FS_I(inode);
char text[16 + 1 + 24 + 1 + 8 + 1];
@@ -333,7 +333,7 @@ static const struct xattr_handler afs_xattr_afs_fid_handler = {
static int afs_xattr_get_volume(const struct xattr_handler *handler,
struct dentry *dentry,
struct inode *inode, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
struct afs_vnode *vnode = AFS_FS_I(inode);
const char *volname = vnode->volume->name;
diff --git a/fs/attr.c b/fs/attr.c
index 473d21b..caa6662 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -342,7 +342,7 @@ int notify_change(struct user_namespace *mnt_userns, struct dentry *dentry,
attr->ia_mtime = timestamp_truncate(attr->ia_mtime, inode);
if (ia_valid & ATTR_KILL_PRIV) {
- error = security_inode_need_killpriv(dentry);
+ error = security_inode_need_killpriv(mnt_userns, dentry);
if (error < 0)
return error;
if (error == 0)
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 8a45142..ee68273 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -378,7 +378,8 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
static int btrfs_xattr_handler_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
name = xattr_full_name(handler, name);
return btrfs_getxattr(inode, name, buffer, size);
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 159a1ff..8e72ed8 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -1256,7 +1256,8 @@ int __ceph_setxattr(struct inode *inode, const char *name,
static int ceph_get_xattr_handler(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size,
+ int flags)
{
if (!ceph_is_valid_xattr(name))
return -EOPNOTSUPP;
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 7d8b72d..e55bb39 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -279,7 +279,7 @@ static int cifs_creation_time_get(struct dentry *dentry, struct inode *inode,
static int cifs_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
ssize_t rc = -EOPNOTSUPP;
unsigned int xid;
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 16d50df..f3a20a1 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -1050,7 +1050,8 @@ ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,
goto out;
}
inode_lock(lower_inode);
- rc = __vfs_getxattr(lower_dentry, lower_inode, name, value, size);
+ rc = __vfs_getxattr(&init_user_ns, lower_dentry, lower_inode, name,
+ value, size, XATTR_NOSECURITY);
inode_unlock(lower_inode);
out:
return rc;
@@ -1156,7 +1157,8 @@ const struct inode_operations ecryptfs_main_iops = {
static int ecryptfs_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return ecryptfs_getxattr(dentry, inode, name, buffer, size);
}
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 7d85e64..8635390 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -422,8 +422,9 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *ecryptfs_inode)
goto out;
}
inode_lock(lower_inode);
- size = __vfs_getxattr(lower_dentry, lower_inode, ECRYPTFS_XATTR_NAME,
- xattr_virt, PAGE_SIZE);
+ size = __vfs_getxattr(&init_user_ns, lower_dentry, lower_inode,
+ ECRYPTFS_XATTR_NAME, xattr_virt, PAGE_SIZE,
+ XATTR_NOSECURITY);
if (size < 0)
size = 8;
put_unaligned_be64(i_size_read(ecryptfs_inode), xattr_virt);
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index 778f2c5..e728123 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -470,7 +470,8 @@ int erofs_getxattr(struct inode *inode, int index,
static int erofs_xattr_generic_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index ebade1f..91c716e 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -11,7 +11,7 @@
static int
ext2_xattr_security_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
buffer, size);
diff --git a/fs/ext2/xattr_trusted.c b/fs/ext2/xattr_trusted.c
index 18a87d5..362f83e 100644
--- a/fs/ext2/xattr_trusted.c
+++ b/fs/ext2/xattr_trusted.c
@@ -18,7 +18,7 @@ ext2_xattr_trusted_list(struct dentry *dentry)
static int
ext2_xattr_trusted_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
buffer, size);
diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c
index 5809244..37936d5 100644
--- a/fs/ext2/xattr_user.c
+++ b/fs/ext2/xattr_user.c
@@ -20,7 +20,7 @@ ext2_xattr_user_list(struct dentry *dentry)
static int
ext2_xattr_user_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
if (!test_opt(inode->i_sb, XATTR_USER))
return -EOPNOTSUPP;
diff --git a/fs/ext4/xattr_hurd.c b/fs/ext4/xattr_hurd.c
index c78df57..7cce47e 100644
--- a/fs/ext4/xattr_hurd.c
+++ b/fs/ext4/xattr_hurd.c
@@ -21,7 +21,7 @@ ext4_xattr_hurd_list(struct dentry *dentry)
static int
ext4_xattr_hurd_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
if (!test_opt(inode->i_sb, XATTR_USER))
return -EOPNOTSUPP;
diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c
index 8213f66..f85699f 100644
--- a/fs/ext4/xattr_security.c
+++ b/fs/ext4/xattr_security.c
@@ -15,7 +15,7 @@
static int
ext4_xattr_security_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,
name, buffer, size);
diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c
index 7c21ffb..9b550a8 100644
--- a/fs/ext4/xattr_trusted.c
+++ b/fs/ext4/xattr_trusted.c
@@ -22,7 +22,7 @@ ext4_xattr_trusted_list(struct dentry *dentry)
static int
ext4_xattr_trusted_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED,
name, buffer, size);
diff --git a/fs/ext4/xattr_user.c b/fs/ext4/xattr_user.c
index 2fe7ff0..5483b15 100644
--- a/fs/ext4/xattr_user.c
+++ b/fs/ext4/xattr_user.c
@@ -21,7 +21,7 @@ ext4_xattr_user_list(struct dentry *dentry)
static int
ext4_xattr_user_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
if (!test_opt(inode->i_sb, XATTR_USER))
return -EOPNOTSUPP;
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 1d2d29d..6386f09 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -45,7 +45,7 @@ static void xattr_free(struct f2fs_sb_info *sbi, void *xattr_addr,
static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
@@ -101,7 +101,7 @@ static bool f2fs_xattr_trusted_list(struct dentry *dentry)
static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
if (buffer)
*((char *)buffer) = F2FS_I(inode)->i_advise;
diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c
index 61dfaf7..876b21a 100644
--- a/fs/fuse/xattr.c
+++ b/fs/fuse/xattr.c
@@ -182,7 +182,7 @@ int fuse_removexattr(struct inode *inode, const char *name)
static int fuse_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
if (fuse_is_bad(inode))
return -EIO;
@@ -212,7 +212,7 @@ static bool no_xattr_list(struct dentry *dentry)
static int no_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
return -EOPNOTSUPP;
}
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index 0c5650f..d4e8fb1 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -602,7 +602,8 @@ static int __gfs2_xattr_get(struct inode *inode, const char *name,
static int gfs2_xattr_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh;
diff --git a/fs/hfs/attr.c b/fs/hfs/attr.c
index 2bd54ef..c42385c3 100644
--- a/fs/hfs/attr.c
+++ b/fs/hfs/attr.c
@@ -115,7 +115,7 @@ static ssize_t __hfs_getxattr(struct inode *inode, enum hfs_xattr_type type,
static int hfs_xattr_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
return __hfs_getxattr(inode, handler->flags, value, size);
}
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
index e2855ce..65e625a 100644
--- a/fs/hfsplus/xattr.c
+++ b/fs/hfsplus/xattr.c
@@ -838,7 +838,8 @@ static int hfsplus_removexattr(struct inode *inode, const char *name)
static int hfsplus_osx_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
/*
* Don't allow retrieving properly prefixed attributes
diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
index c1c7a16c..1b28b83 100644
--- a/fs/hfsplus/xattr_security.c
+++ b/fs/hfsplus/xattr_security.c
@@ -15,7 +15,8 @@
static int hfsplus_security_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer,
+ size_t size, int flags)
{
return hfsplus_getxattr(inode, name, buffer, size,
XATTR_SECURITY_PREFIX,
diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c
index e150372..7caeff6 100644
--- a/fs/hfsplus/xattr_trusted.c
+++ b/fs/hfsplus/xattr_trusted.c
@@ -14,7 +14,8 @@
static int hfsplus_trusted_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer,
+ size_t size, int flags)
{
return hfsplus_getxattr(inode, name, buffer, size,
XATTR_TRUSTED_PREFIX,
diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
index a6b60b1..ca74443 100644
--- a/fs/hfsplus/xattr_user.c
+++ b/fs/hfsplus/xattr_user.c
@@ -14,7 +14,8 @@
static int hfsplus_user_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return hfsplus_getxattr(inode, name, buffer, size,
diff --git a/fs/incfs/vfs.c b/fs/incfs/vfs.c
index 282f457..44c4be4 100644
--- a/fs/incfs/vfs.c
+++ b/fs/incfs/vfs.c
@@ -163,7 +163,7 @@ const struct inode_operations incfs_file_inode_ops = {
static int incfs_handler_getxattr(const struct xattr_handler *xh,
struct dentry *d, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return incfs_getxattr(d, name, buffer, size);
}
diff --git a/fs/inode.c b/fs/inode.c
index ed0cab8..cf77eda 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1898,7 +1898,8 @@ EXPORT_SYMBOL(should_remove_suid);
* response to write or truncate. Return 0 if nothing has to be changed.
* Negative value on error (change should be denied).
*/
-int dentry_needs_remove_privs(struct dentry *dentry)
+int dentry_needs_remove_privs(struct user_namespace *mnt_userns,
+ struct dentry *dentry)
{
struct inode *inode = d_inode(dentry);
int mask = 0;
@@ -1908,7 +1909,7 @@ int dentry_needs_remove_privs(struct dentry *dentry)
return 0;
mask = should_remove_suid(dentry);
- ret = security_inode_need_killpriv(dentry);
+ ret = security_inode_need_killpriv(mnt_userns, dentry);
if (ret < 0)
return ret;
if (ret)
@@ -1949,7 +1950,7 @@ int file_remove_privs(struct file *file)
if (IS_NOSEC(inode) || !S_ISREG(inode->i_mode))
return 0;
- kill = dentry_needs_remove_privs(dentry);
+ kill = dentry_needs_remove_privs(file_mnt_user_ns(file), dentry);
if (kill < 0)
return kill;
if (kill)
diff --git a/fs/internal.h b/fs/internal.h
index 3cd065c..6eba409 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -150,7 +150,8 @@ extern int vfs_open(const struct path *, struct file *);
*/
extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
extern void inode_add_lru(struct inode *inode);
-extern int dentry_needs_remove_privs(struct dentry *dentry);
+extern int dentry_needs_remove_privs(struct user_namespace *mnt_userns,
+ struct dentry *dentry);
/*
* fs-writeback.c
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index aef5522..c443c4e 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -50,7 +50,8 @@ int jffs2_init_security(struct inode *inode, struct inode *dir,
/* ---- XATTR Handler for "security.*" ----------------- */
static int jffs2_security_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY,
name, buffer, size);
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
index cc3f248..95ed9ce 100644
--- a/fs/jffs2/xattr_trusted.c
+++ b/fs/jffs2/xattr_trusted.c
@@ -18,7 +18,8 @@
static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
name, buffer, size);
diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c
index fb94597..418bb8d 100644
--- a/fs/jffs2/xattr_user.c
+++ b/fs/jffs2/xattr_user.c
@@ -18,7 +18,8 @@
static int jffs2_user_getxattr(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER,
name, buffer, size);
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index f9273f6..8728df3 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -925,7 +925,7 @@ static int __jfs_xattr_set(struct inode *inode, const char *name,
static int jfs_xattr_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
name = xattr_full_name(handler, name);
return __jfs_getxattr(inode, name, value, size);
@@ -943,7 +943,8 @@ static int jfs_xattr_set(const struct xattr_handler *handler,
static int jfs_xattr_get_os2(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size,
+ int flags)
{
if (is_known_namespace(name))
return -EOPNOTSUPP;
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index c0eae17..d56210c 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -313,7 +313,8 @@ int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
static int kernfs_vfs_xattr_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *suffix, void *value, size_t size)
+ const char *suffix, void *value, size_t size,
+ int flags)
{
const char *name = xattr_full_name(handler, suffix);
struct kernfs_node *kn = inode->i_private;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e1214bb..de9b824 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7607,7 +7607,8 @@ static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *key, void *buf, size_t buflen)
+ const char *key, void *buf, size_t buflen,
+ int flags)
{
return nfs4_proc_get_acl(inode, buf, buflen);
}
@@ -7633,7 +7634,8 @@ static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *key, void *buf, size_t buflen)
+ const char *key, void *buf, size_t buflen,
+ int flags)
{
if (security_ismaclabel(key))
return nfs4_get_security_label(inode, buf, buflen);
@@ -7711,7 +7713,8 @@ static int nfs4_xattr_set_nfs4_user(const struct xattr_handler *handler,
static int nfs4_xattr_get_nfs4_user(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *key, void *buf, size_t buflen)
+ const char *key, void *buf, size_t buflen,
+ int flags)
{
struct nfs_access_entry cache;
ssize_t ret;
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index afd0dda..fdc54f7 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -710,7 +710,7 @@ ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de,
struct inode *inode, const char *name, void *buffer,
- size_t size)
+ size_t size, int flags)
{
int err;
struct ntfs_inode *ni = ntfs_i(inode);
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index dd784eb..bd019ed 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7240,7 +7240,8 @@ int ocfs2_init_security_and_acl(struct inode *dir,
*/
static int ocfs2_xattr_security_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY,
name, buffer, size);
@@ -7313,7 +7314,8 @@ const struct xattr_handler ocfs2_xattr_security_handler = {
*/
static int ocfs2_xattr_trusted_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_TRUSTED,
name, buffer, size);
@@ -7340,7 +7342,8 @@ const struct xattr_handler ocfs2_xattr_trusted_handler = {
*/
static int ocfs2_xattr_user_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
diff --git a/fs/open.c b/fs/open.c
index 5ffb516..684a19c 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -54,7 +54,7 @@ int do_truncate(struct user_namespace *mnt_userns, struct dentry *dentry,
}
/* Remove suid, sgid, and file capabilities on truncate too */
- ret = dentry_needs_remove_privs(dentry);
+ ret = dentry_needs_remove_privs(mnt_userns, dentry);
if (ret < 0)
return ret;
if (ret)
diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
index 9a5b757..2cc3bc6 100644
--- a/fs/orangefs/xattr.c
+++ b/fs/orangefs/xattr.c
@@ -542,7 +542,8 @@ static int orangefs_xattr_get_default(const struct xattr_handler *handler,
struct inode *inode,
const char *name,
void *buffer,
- size_t size)
+ size_t size,
+ int flags)
{
return orangefs_inode_getxattr(inode, name, buffer, size);
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 178daa5..04be6c7 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1000,7 +1000,7 @@ static unsigned int ovl_split_lowerdirs(char *str)
static int __maybe_unused
ovl_posix_acl_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size, int flags)
{
return ovl_xattr_get(dentry, inode, handler->name, buffer, size);
}
@@ -1063,7 +1063,8 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
static int ovl_own_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return -EOPNOTSUPP;
}
@@ -1079,7 +1080,8 @@ static int ovl_own_xattr_set(const struct xattr_handler *handler,
static int ovl_other_xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
return ovl_xattr_get(dentry, inode, name, buffer, size);
}
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index f5c25f5..da83a9b 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -888,7 +888,7 @@ EXPORT_SYMBOL (posix_acl_to_xattr);
static int
posix_acl_xattr_get(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
- const char *name, void *value, size_t size)
+ const char *name, void *value, size_t size, int flags)
{
struct posix_acl *acl;
int error;
diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c
index 8965c8e..1fd1359 100644
--- a/fs/reiserfs/xattr_security.c
+++ b/fs/reiserfs/xattr_security.c
@@ -11,7 +11,8 @@
static int
security_get(const struct xattr_handler *handler, struct dentry *unused,
- struct inode *inode, const char *name, void *buffer, size_t size)
+ struct inode *inode, const char *name, void *buffer, size_t size,
+ int flags)
{
if (IS_PRIVATE(inode))
return -EPERM;
diff --git a/fs/reiserfs/xattr_trusted.c b/fs/reiserfs/xattr_trusted.c
index d853cea..f54b848 100644
--- a/fs/reiserfs/xattr_trusted.c
+++ b/fs/reiserfs/xattr_trusted.c
@@ -10,7 +10,8 @@
static int
trusted_get(const struct xattr_handler *handler, struct dentry *unused,
- struct inode *inode, const char *name, void *buffer, size_t size)
+ struct inode *inode, const char *name, void *buffer, size_t size,
+ int flags)
{
if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
return -EPERM;
diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c
index 65d9cd1..ddd98cd 100644
--- a/fs/reiserfs/xattr_user.c
+++ b/fs/reiserfs/xattr_user.c
@@ -9,7 +9,8 @@
static int
user_get(const struct xattr_handler *handler, struct dentry *unused,
- struct inode *inode, const char *name, void *buffer, size_t size)
+ struct inode *inode, const char *name, void *buffer, size_t size,
+ int flags)
{
if (!reiserfs_xattrs_user(inode->i_sb))
return -EOPNOTSUPP;
diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
index e1e3f3d..d8d58c9 100644
--- a/fs/squashfs/xattr.c
+++ b/fs/squashfs/xattr.c
@@ -204,7 +204,7 @@ static int squashfs_xattr_handler_get(const struct xattr_handler *handler,
struct dentry *unused,
struct inode *inode,
const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size, int flags)
{
return squashfs_xattr_get(inode, handler->flags, name,
buffer, size);
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index e4f193e..681663f 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -689,7 +689,8 @@ int ubifs_init_security(struct inode *dentry, struct inode *inode,
static int xattr_get(const struct xattr_handler *handler,
struct dentry *dentry, struct inode *inode,
- const char *name, void *buffer, size_t size)
+ const char *name, void *buffer, size_t size,
+ int flags)
{
dbg_gen("xattr '%s', ino %lu ('%pd'), buf size %zd", name,
inode->i_ino, dentry, size);
diff --git a/fs/xattr.c b/fs/xattr.c
index 5c8c517..4c36ddd 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -369,7 +369,7 @@ vfs_getxattr_alloc(struct user_namespace *mnt_userns, struct dentry *dentry,
return PTR_ERR(handler);
if (!handler->get)
return -EOPNOTSUPP;
- error = handler->get(handler, dentry, inode, name, NULL, 0);
+ error = handler->get(handler, dentry, inode, name, NULL, 0, 0);
if (error < 0)
return error;
@@ -380,33 +380,22 @@ vfs_getxattr_alloc(struct user_namespace *mnt_userns, struct dentry *dentry,
memset(value, 0, error + 1);
}
- error = handler->get(handler, dentry, inode, name, value, error);
+ error = handler->get(handler, dentry, inode, name, value, error, 0);
*xattr_value = value;
return error;
}
ssize_t
-__vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
- void *value, size_t size)
+__vfs_getxattr(struct user_namespace *mnt_userns, struct dentry *dentry,
+ struct inode *inode, const char *name, void *value,
+ size_t size, int flags)
{
const struct xattr_handler *handler;
-
- handler = xattr_resolve_name(inode, &name);
- if (IS_ERR(handler))
- return PTR_ERR(handler);
- if (!handler->get)
- return -EOPNOTSUPP;
- return handler->get(handler, dentry, inode, name, value, size);
-}
-EXPORT_SYMBOL(__vfs_getxattr);
-
-ssize_t
-vfs_getxattr(struct user_namespace *mnt_userns, struct dentry *dentry,
- const char *name, void *value, size_t size)
-{
- struct inode *inode = dentry->d_inode;
int error;
+ if (flags & XATTR_NOSECURITY)
+ goto nolsm;
+
error = xattr_permission(mnt_userns, inode, name, MAY_READ);
if (error)
return error;
@@ -429,7 +418,20 @@ vfs_getxattr(struct user_namespace *mnt_userns, struct dentry *dentry,
return ret;
}
nolsm:
- return __vfs_getxattr(dentry, inode, name, value, size);
+ handler = xattr_resolve_name(inode, &name);
+ if (IS_ERR(handler))
+ return PTR_ERR(handler);
+ if (!handler->get)
+ return -EOPNOTSUPP;
+ return handler->get(handler, dentry, inode, name, value, size, flags);
+}
+EXPORT_SYMBOL(__vfs_getxattr);
+
+ssize_t
+vfs_getxattr(struct user_namespace *mnt_userns, struct dentry *dentry,
+ const char *name, void *value, size_t size)
+{
+ return __vfs_getxattr(mnt_userns, dentry, dentry->d_inode, name, value, size, 0);
}
EXPORT_SYMBOL_GPL(vfs_getxattr);
diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 0d050f8..296b494 100644
--- a/fs/xfs/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c
@@ -21,7 +21,8 @@
static int
xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
- struct inode *inode, const char *name, void *value, size_t size)
+ struct inode *inode, const char *name, void *value, size_t size,
+ int flags)
{
struct xfs_da_args args = {
.dp = XFS_I(inode),