summaryrefslogtreecommitdiffstats
path: root/fs/ext3
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/acl.c223
-rw-r--r--fs/ext3/acl.h9
-rw-r--r--fs/ext3/file.c1
-rw-r--r--fs/ext3/inode.c2
-rw-r--r--fs/ext3/namei.c2
-rw-r--r--fs/ext3/xattr.c8
-rw-r--r--fs/ext3/xattr.h2
7 files changed, 39 insertions, 208 deletions
diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index 4f3d8fa0c0a3..8bbaf5bcf982 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -145,13 +145,6 @@ ext3_get_acl(struct inode *inode, int type)
struct posix_acl *acl;
int retval;
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return NULL;
-
- acl = get_cached_acl(inode, type);
- if (acl != ACL_NOT_CACHED)
- return acl;
-
switch (type) {
case ACL_TYPE_ACCESS:
name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
@@ -190,7 +183,7 @@ ext3_get_acl(struct inode *inode, int type)
* inode->i_mutex: down unless called from ext3_new_inode
*/
static int
-ext3_set_acl(handle_t *handle, struct inode *inode, int type,
+__ext3_set_acl(handle_t *handle, struct inode *inode, int type,
struct posix_acl *acl)
{
int name_index;
@@ -198,9 +191,6 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type,
size_t size = 0;
int error;
- if (S_ISLNK(inode->i_mode))
- return -EOPNOTSUPP;
-
switch(type) {
case ACL_TYPE_ACCESS:
name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
@@ -243,204 +233,49 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type,
return error;
}
-/*
- * Initialize the ACLs of a new inode. Called from ext3_new_inode.
- *
- * dir->i_mutex: down
- * inode->i_mutex: up (access to inode is still exclusive)
- */
int
-ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
+ext3_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
- struct posix_acl *acl = NULL;
- int error = 0;
-
- if (!S_ISLNK(inode->i_mode)) {
- if (test_opt(dir->i_sb, POSIX_ACL)) {
- acl = ext3_get_acl(dir, ACL_TYPE_DEFAULT);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- }
- if (!acl)
- inode->i_mode &= ~current_umask();
- }
- if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
- if (S_ISDIR(inode->i_mode)) {
- error = ext3_set_acl(handle, inode,
- ACL_TYPE_DEFAULT, acl);
- if (error)
- goto cleanup;
- }
- error = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
- if (error < 0)
- return error;
-
- if (error > 0) {
- /* This is an extended ACL */
- error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
- }
- }
-cleanup:
- posix_acl_release(acl);
- return error;
-}
-
-/*
- * Does chmod for an inode that may have an Access Control List. The
- * inode->i_mode field must be updated to the desired value by the caller
- * before calling this function.
- * Returns 0 on success, or a negative error number.
- *
- * We change the ACL rather than storing some ACL entries in the file
- * mode permission bits (which would be more efficient), because that
- * would break once additional permissions (like ACL_APPEND, ACL_DELETE
- * for directories) are added. There are no more bits available in the
- * file mode.
- *
- * inode->i_mutex: down
- */
-int
-ext3_acl_chmod(struct inode *inode)
-{
- struct posix_acl *acl;
handle_t *handle;
- int retries = 0;
- int error;
+ int error, retries = 0;
- if (S_ISLNK(inode->i_mode))
- return -EOPNOTSUPP;
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return 0;
- acl = ext3_get_acl(inode, ACL_TYPE_ACCESS);
- if (IS_ERR(acl) || !acl)
- return PTR_ERR(acl);
- error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
- if (error)
- return error;
retry:
- handle = ext3_journal_start(inode,
- EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
- if (IS_ERR(handle)) {
- error = PTR_ERR(handle);
- ext3_std_error(inode->i_sb, error);
- goto out;
- }
- error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
+ handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ error = __ext3_set_acl(handle, inode, type, acl);
ext3_journal_stop(handle);
- if (error == -ENOSPC &&
- ext3_should_retry_alloc(inode->i_sb, &retries))
+ if (error == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
goto retry;
-out:
- posix_acl_release(acl);
return error;
}
/*
- * Extended attribute handlers
+ * Initialize the ACLs of a new inode. Called from ext3_new_inode.
+ *
+ * dir->i_mutex: down
+ * inode->i_mutex: up (access to inode is still exclusive)
*/
-static size_t
-ext3_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_len,
- const char *name, size_t name_len, int type)
-{
- const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
-
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return 0;
- if (list && size <= list_len)
- memcpy(list, POSIX_ACL_XATTR_ACCESS, size);
- return size;
-}
-
-static size_t
-ext3_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_len,
- const char *name, size_t name_len, int type)
-{
- const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
-
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return 0;
- if (list && size <= list_len)
- memcpy(list, POSIX_ACL_XATTR_DEFAULT, size);
- return size;
-}
-
-static int
-ext3_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
- size_t size, int type)
+int
+ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
{
- struct posix_acl *acl;
+ struct posix_acl *default_acl, *acl;
int error;
- if (strcmp(name, "") != 0)
- return -EINVAL;
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return -EOPNOTSUPP;
-
- acl = ext3_get_acl(dentry->d_inode, type);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (acl == NULL)
- return -ENODATA;
- error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
- posix_acl_release(acl);
-
- return error;
-}
-
-static int
-ext3_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags, int type)
-{
- struct inode *inode = dentry->d_inode;
- handle_t *handle;
- struct posix_acl *acl;
- int error, retries = 0;
-
- if (strcmp(name, "") != 0)
- return -EINVAL;
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return -EOPNOTSUPP;
- if (!inode_owner_or_capable(inode))
- return -EPERM;
-
- if (value) {
- acl = posix_acl_from_xattr(&init_user_ns, value, size);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- else if (acl) {
- error = posix_acl_valid(acl);
- if (error)
- goto release_and_out;
- }
- } else
- acl = NULL;
-
-retry:
- handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb));
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- error = ext3_set_acl(handle, inode, type, acl);
- ext3_journal_stop(handle);
- if (error == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
- goto retry;
+ error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
+ if (error)
+ return error;
-release_and_out:
- posix_acl_release(acl);
+ if (default_acl) {
+ error = __ext3_set_acl(handle, inode, ACL_TYPE_DEFAULT,
+ default_acl);
+ posix_acl_release(default_acl);
+ }
+ if (acl) {
+ if (!error)
+ error = __ext3_set_acl(handle, inode, ACL_TYPE_ACCESS,
+ acl);
+ posix_acl_release(acl);
+ }
return error;
}
-
-const struct xattr_handler ext3_xattr_acl_access_handler = {
- .prefix = POSIX_ACL_XATTR_ACCESS,
- .flags = ACL_TYPE_ACCESS,
- .list = ext3_xattr_list_acl_access,
- .get = ext3_xattr_get_acl,
- .set = ext3_xattr_set_acl,
-};
-
-const struct xattr_handler ext3_xattr_acl_default_handler = {
- .prefix = POSIX_ACL_XATTR_DEFAULT,
- .flags = ACL_TYPE_DEFAULT,
- .list = ext3_xattr_list_acl_default,
- .get = ext3_xattr_get_acl,
- .set = ext3_xattr_set_acl,
-};
diff --git a/fs/ext3/acl.h b/fs/ext3/acl.h
index dbc921e458c5..ea1c69edab9e 100644
--- a/fs/ext3/acl.h
+++ b/fs/ext3/acl.h
@@ -55,18 +55,13 @@ static inline int ext3_acl_count(size_t size)
/* acl.c */
extern struct posix_acl *ext3_get_acl(struct inode *inode, int type);
-extern int ext3_acl_chmod (struct inode *);
+extern int ext3_set_acl(struct inode *inode, struct posix_acl *acl, int type);
extern int ext3_init_acl (handle_t *, struct inode *, struct inode *);
#else /* CONFIG_EXT3_FS_POSIX_ACL */
#include <linux/sched.h>
#define ext3_get_acl NULL
-
-static inline int
-ext3_acl_chmod(struct inode *inode)
-{
- return 0;
-}
+#define ext3_set_acl NULL
static inline int
ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 25cb413277e9..aad05311392a 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -75,6 +75,7 @@ const struct inode_operations ext3_file_inode_operations = {
.removexattr = generic_removexattr,
#endif
.get_acl = ext3_get_acl,
+ .set_acl = ext3_set_acl,
.fiemap = ext3_fiemap,
};
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 2bd85486b879..384b6ebb655f 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -3365,7 +3365,7 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
mark_inode_dirty(inode);
if (ia_valid & ATTR_MODE)
- rc = ext3_acl_chmod(inode);
+ rc = posix_acl_chmod(inode, inode->i_mode);
err_out:
ext3_std_error(inode->i_sb, error);
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index f8cde46de9cd..f197736dccfa 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -2569,6 +2569,7 @@ const struct inode_operations ext3_dir_inode_operations = {
.removexattr = generic_removexattr,
#endif
.get_acl = ext3_get_acl,
+ .set_acl = ext3_set_acl,
};
const struct inode_operations ext3_special_inode_operations = {
@@ -2580,4 +2581,5 @@ const struct inode_operations ext3_special_inode_operations = {
.removexattr = generic_removexattr,
#endif
.get_acl = ext3_get_acl,
+ .set_acl = ext3_set_acl,
};
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index b1fc96383e08..c6874be6d58b 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -102,8 +102,8 @@ static struct mb_cache *ext3_xattr_cache;
static const struct xattr_handler *ext3_xattr_handler_map[] = {
[EXT3_XATTR_INDEX_USER] = &ext3_xattr_user_handler,
#ifdef CONFIG_EXT3_FS_POSIX_ACL
- [EXT3_XATTR_INDEX_POSIX_ACL_ACCESS] = &ext3_xattr_acl_access_handler,
- [EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext3_xattr_acl_default_handler,
+ [EXT3_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler,
+ [EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler,
#endif
[EXT3_XATTR_INDEX_TRUSTED] = &ext3_xattr_trusted_handler,
#ifdef CONFIG_EXT3_FS_SECURITY
@@ -115,8 +115,8 @@ const struct xattr_handler *ext3_xattr_handlers[] = {
&ext3_xattr_user_handler,
&ext3_xattr_trusted_handler,
#ifdef CONFIG_EXT3_FS_POSIX_ACL
- &ext3_xattr_acl_access_handler,
- &ext3_xattr_acl_default_handler,
+ &posix_acl_access_xattr_handler,
+ &posix_acl_default_xattr_handler,
#endif
#ifdef CONFIG_EXT3_FS_SECURITY
&ext3_xattr_security_handler,
diff --git a/fs/ext3/xattr.h b/fs/ext3/xattr.h
index 2be4f69bfa64..32e93ebf8031 100644
--- a/fs/ext3/xattr.h
+++ b/fs/ext3/xattr.h
@@ -60,8 +60,6 @@ struct ext3_xattr_entry {
extern const struct xattr_handler ext3_xattr_user_handler;
extern const struct xattr_handler ext3_xattr_trusted_handler;
-extern const struct xattr_handler ext3_xattr_acl_access_handler;
-extern const struct xattr_handler ext3_xattr_acl_default_handler;
extern const struct xattr_handler ext3_xattr_security_handler;
extern ssize_t ext3_listxattr(struct dentry *, char *, size_t);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 02:27:21 +0100