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Diffstat (limited to 'fs/jfs/xattr.c')
-rw-r--r--fs/jfs/xattr.c94
1 files changed, 77 insertions, 17 deletions
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 554ec739e49..23aa5066b5a 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -21,6 +21,7 @@
#include <linux/xattr.h>
#include <linux/posix_acl_xattr.h>
#include <linux/quotaops.h>
+#include <linux/security.h>
#include "jfs_incore.h"
#include "jfs_superblock.h"
#include "jfs_dmap.h"
@@ -633,12 +634,12 @@ static void ea_release(struct inode *inode, struct ea_buffer *ea_buf)
}
}
-static int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
+static int ea_put(tid_t tid, struct inode *inode, struct ea_buffer *ea_buf,
+ int new_size)
{
struct jfs_inode_info *ji = JFS_IP(inode);
unsigned long old_blocks, new_blocks;
int rc = 0;
- tid_t tid;
if (new_size == 0) {
ea_release(inode, ea_buf);
@@ -664,9 +665,6 @@ static int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
if (rc)
return rc;
- tid = txBegin(inode->i_sb, 0);
- down(&ji->commit_sem);
-
old_blocks = new_blocks = 0;
if (ji->ea.flag & DXD_EXTENT) {
@@ -695,11 +693,8 @@ static int ea_put(struct inode *inode, struct ea_buffer *ea_buf, int new_size)
DQUOT_FREE_BLOCK(inode, old_blocks);
inode->i_ctime = CURRENT_TIME;
- rc = txCommit(tid, 1, &inode, 0);
- txEnd(tid);
- up(&ji->commit_sem);
- return rc;
+ return 0;
}
/*
@@ -810,8 +805,8 @@ static int can_set_xattr(struct inode *inode, const char *name,
return permission(inode, MAY_WRITE, NULL);
}
-int __jfs_setxattr(struct inode *inode, const char *name, const void *value,
- size_t value_len, int flags)
+int __jfs_setxattr(tid_t tid, struct inode *inode, const char *name,
+ const void *value, size_t value_len, int flags)
{
struct jfs_ea_list *ealist;
struct jfs_ea *ea, *old_ea = NULL, *next_ea = NULL;
@@ -825,9 +820,6 @@ int __jfs_setxattr(struct inode *inode, const char *name, const void *value,
int rc;
int length;
- if ((rc = can_set_xattr(inode, name, value, value_len)))
- return rc;
-
if (strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) {
os2name = kmalloc(namelen - XATTR_OS2_PREFIX_LEN + 1,
GFP_KERNEL);
@@ -939,7 +931,7 @@ int __jfs_setxattr(struct inode *inode, const char *name, const void *value,
ealist->size = cpu_to_le32(new_size);
- rc = ea_put(inode, &ea_buf, new_size);
+ rc = ea_put(tid, inode, &ea_buf, new_size);
goto out;
release:
@@ -955,12 +947,29 @@ int __jfs_setxattr(struct inode *inode, const char *name, const void *value,
int jfs_setxattr(struct dentry *dentry, const char *name, const void *value,
size_t value_len, int flags)
{
+ struct inode *inode = dentry->d_inode;
+ struct jfs_inode_info *ji = JFS_IP(inode);
+ int rc;
+ tid_t tid;
+
+ if ((rc = can_set_xattr(inode, name, value, value_len)))
+ return rc;
+
if (value == NULL) { /* empty EA, do not remove */
value = "";
value_len = 0;
}
- return __jfs_setxattr(dentry->d_inode, name, value, value_len, flags);
+ tid = txBegin(inode->i_sb, 0);
+ down(&ji->commit_sem);
+ rc = __jfs_setxattr(tid, dentry->d_inode, name, value, value_len,
+ flags);
+ if (!rc)
+ rc = txCommit(tid, 1, &inode, 0);
+ txEnd(tid);
+ up(&ji->commit_sem);
+
+ return rc;
}
static int can_get_xattr(struct inode *inode, const char *name)
@@ -1122,5 +1131,56 @@ ssize_t jfs_listxattr(struct dentry * dentry, char *data, size_t buf_size)
int jfs_removexattr(struct dentry *dentry, const char *name)
{
- return __jfs_setxattr(dentry->d_inode, name, NULL, 0, XATTR_REPLACE);
+ struct inode *inode = dentry->d_inode;
+ struct jfs_inode_info *ji = JFS_IP(inode);
+ int rc;
+ tid_t tid;
+
+ if ((rc = can_set_xattr(inode, name, NULL, 0)))
+ return rc;
+
+ tid = txBegin(inode->i_sb, 0);
+ down(&ji->commit_sem);
+ rc = __jfs_setxattr(tid, dentry->d_inode, name, NULL, 0, XATTR_REPLACE);
+ if (!rc)
+ rc = txCommit(tid, 1, &inode, 0);
+ txEnd(tid);
+ up(&ji->commit_sem);
+
+ return rc;
+}
+
+#ifdef CONFIG_JFS_SECURITY
+int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir)
+{
+ int rc;
+ size_t len;
+ void *value;
+ char *suffix;
+ char *name;
+
+ rc = security_inode_init_security(inode, dir, &suffix, &value, &len);
+ if (rc) {
+ if (rc == -EOPNOTSUPP)
+ return 0;
+ return rc;
+ }
+ name = kmalloc(XATTR_SECURITY_PREFIX_LEN + 1 + strlen(suffix),
+ GFP_NOFS);
+ if (!name) {
+ rc = -ENOMEM;
+ goto kmalloc_failed;
+ }
+ strcpy(name, XATTR_SECURITY_PREFIX);
+ strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
+
+ rc = __jfs_setxattr(tid, inode, name, value, len, 0);
+
+ kfree(name);
+kmalloc_failed:
+ kfree(suffix);
+ kfree(value);
+
+ return rc;
}
+#endif