summaryrefslogtreecommitdiff
path: root/fs/ext2
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/ext2.h9
-rw-r--r--fs/ext2/ialloc.c6
-rw-r--r--fs/ext2/inode.c2
-rw-r--r--fs/ext2/super.c83
-rw-r--r--fs/ext2/symlink.c4
-rw-r--r--fs/ext2/xattr.c2
-rw-r--r--fs/ext2/xattr.h8
-rw-r--r--fs/ext2/xattr_security.c22
-rw-r--r--fs/ext2/xip.c81
9 files changed, 170 insertions, 47 deletions
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index eed521d22cf0..e977f8566d14 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -2,6 +2,15 @@
#include <linux/ext2_fs.h>
/*
+ * ext2 mount options
+ */
+struct ext2_mount_options {
+ unsigned long s_mount_opt;
+ uid_t s_resuid;
+ gid_t s_resgid;
+};
+
+/*
* second extended file system inode data in memory
*/
struct ext2_inode_info {
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 77e059149212..c8d07030c897 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -612,6 +612,12 @@ got:
err = ext2_init_acl(inode, dir);
if (err) {
DQUOT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
+ goto fail2;
+ }
+ err = ext2_init_security(inode,dir);
+ if (err) {
+ DQUOT_FREE_INODE(inode);
goto fail2;
}
mark_inode_dirty(inode);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 53dceb0c6593..fdba4d1d3c60 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -71,6 +71,8 @@ void ext2_put_inode(struct inode *inode)
*/
void ext2_delete_inode (struct inode * inode)
{
+ truncate_inode_pages(&inode->i_data, 0);
+
if (is_bad_inode(inode))
goto no_delete;
EXT2_I(inode)->i_dtime = get_seconds();
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 876e391f2871..3c0c7c6a5b44 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -19,6 +19,7 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/string.h>
+#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/blkdev.h>
@@ -27,6 +28,8 @@
#include <linux/buffer_head.h>
#include <linux/smp_lock.h>
#include <linux/vfs.h>
+#include <linux/seq_file.h>
+#include <linux/mount.h>
#include <asm/uaccess.h>
#include "ext2.h"
#include "xattr.h"
@@ -201,6 +204,26 @@ static void ext2_clear_inode(struct inode *inode)
#endif
}
+static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
+{
+ struct ext2_sb_info *sbi = EXT2_SB(vfs->mnt_sb);
+
+ if (sbi->s_mount_opt & EXT2_MOUNT_GRPID)
+ seq_puts(seq, ",grpid");
+ else
+ seq_puts(seq, ",nogrpid");
+
+#if defined(CONFIG_QUOTA)
+ if (sbi->s_mount_opt & EXT2_MOUNT_USRQUOTA)
+ seq_puts(seq, ",usrquota");
+
+ if (sbi->s_mount_opt & EXT2_MOUNT_GRPQUOTA)
+ seq_puts(seq, ",grpquota");
+#endif
+
+ return 0;
+}
+
#ifdef CONFIG_QUOTA
static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data, size_t len, loff_t off);
static ssize_t ext2_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off);
@@ -218,6 +241,7 @@ static struct super_operations ext2_sops = {
.statfs = ext2_statfs,
.remount_fs = ext2_remount,
.clear_inode = ext2_clear_inode,
+ .show_options = ext2_show_options,
#ifdef CONFIG_QUOTA
.quota_read = ext2_quota_read,
.quota_write = ext2_quota_write,
@@ -256,10 +280,11 @@ static unsigned long get_sb_block(void **data)
enum {
Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
- Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
- Opt_nouid32, Opt_check, Opt_nocheck, Opt_debug, Opt_oldalloc, Opt_orlov, Opt_nobh,
- Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl, Opt_xip,
- Opt_ignore, Opt_err,
+ Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic,
+ Opt_err_ro, Opt_nouid32, Opt_check, Opt_nocheck, Opt_debug,
+ Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
+ Opt_acl, Opt_noacl, Opt_xip, Opt_ignore, Opt_err, Opt_quota,
+ Opt_usrquota, Opt_grpquota
};
static match_table_t tokens = {
@@ -288,10 +313,10 @@ static match_table_t tokens = {
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_xip, "xip"},
- {Opt_ignore, "grpquota"},
+ {Opt_grpquota, "grpquota"},
{Opt_ignore, "noquota"},
- {Opt_ignore, "quota"},
- {Opt_ignore, "usrquota"},
+ {Opt_quota, "quota"},
+ {Opt_usrquota, "usrquota"},
{Opt_err, NULL}
};
@@ -406,6 +431,26 @@ static int parse_options (char * options,
printk("EXT2 xip option not supported\n");
#endif
break;
+
+#if defined(CONFIG_QUOTA)
+ case Opt_quota:
+ case Opt_usrquota:
+ set_opt(sbi->s_mount_opt, USRQUOTA);
+ break;
+
+ case Opt_grpquota:
+ set_opt(sbi->s_mount_opt, GRPQUOTA);
+ break;
+#else
+ case Opt_quota:
+ case Opt_usrquota:
+ case Opt_grpquota:
+ printk(KERN_ERR
+ "EXT2-fs: quota operations not supported.\n");
+
+ break;
+#endif
+
case Opt_ignore:
break;
default:
@@ -936,12 +981,23 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
struct ext2_sb_info * sbi = EXT2_SB(sb);
struct ext2_super_block * es;
unsigned long old_mount_opt = sbi->s_mount_opt;
+ struct ext2_mount_options old_opts;
+ unsigned long old_sb_flags;
+ int err;
+
+ /* Store the old options */
+ old_sb_flags = sb->s_flags;
+ old_opts.s_mount_opt = sbi->s_mount_opt;
+ old_opts.s_resuid = sbi->s_resuid;
+ old_opts.s_resgid = sbi->s_resgid;
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options (data, sbi))
- return -EINVAL;
+ if (!parse_options (data, sbi)) {
+ err = -EINVAL;
+ goto restore_opts;
+ }
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
@@ -971,7 +1027,8 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
printk("EXT2-fs: %s: couldn't remount RDWR because of "
"unsupported optional features (%x).\n",
sb->s_id, le32_to_cpu(ret));
- return -EROFS;
+ err = -EROFS;
+ goto restore_opts;
}
/*
* Mounting a RDONLY partition read-write, so reread and
@@ -984,6 +1041,12 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
}
ext2_sync_super(sb, es);
return 0;
+restore_opts:
+ sbi->s_mount_opt = old_opts.s_mount_opt;
+ sbi->s_resuid = old_opts.s_resuid;
+ sbi->s_resgid = old_opts.s_resgid;
+ sb->s_flags = old_sb_flags;
+ return err;
}
static int ext2_statfs (struct super_block * sb, struct kstatfs * buf)
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 9f7bac01d557..1e67d87cfa91 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -21,11 +21,11 @@
#include "xattr.h"
#include <linux/namei.h>
-static int ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct ext2_inode_info *ei = EXT2_I(dentry->d_inode);
nd_set_link(nd, (char *)ei->i_data);
- return 0;
+ return NULL;
}
struct inode_operations ext2_symlink_inode_operations = {
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 27982b500e84..0099462d4271 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -823,7 +823,7 @@ cleanup:
void
ext2_xattr_put_super(struct super_block *sb)
{
- mb_cache_shrink(ext2_xattr_cache, sb->s_bdev);
+ mb_cache_shrink(sb->s_bdev);
}
diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h
index 5f3bfde3b810..67cfeb66e897 100644
--- a/fs/ext2/xattr.h
+++ b/fs/ext2/xattr.h
@@ -116,3 +116,11 @@ exit_ext2_xattr(void)
# endif /* CONFIG_EXT2_FS_XATTR */
+#ifdef CONFIG_EXT2_FS_SECURITY
+extern int ext2_init_security(struct inode *inode, struct inode *dir);
+#else
+static inline int ext2_init_security(struct inode *inode, struct inode *dir)
+{
+ return 0;
+}
+#endif
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index 6a6c59fbe599..a26612798471 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -8,6 +8,7 @@
#include <linux/fs.h>
#include <linux/smp_lock.h>
#include <linux/ext2_fs.h>
+#include <linux/security.h>
#include "xattr.h"
static size_t
@@ -45,6 +46,27 @@ ext2_xattr_security_set(struct inode *inode, const char *name,
value, size, flags);
}
+int
+ext2_init_security(struct inode *inode, struct inode *dir)
+{
+ int err;
+ size_t len;
+ void *value;
+ char *name;
+
+ err = security_inode_init_security(inode, dir, &name, &value, &len);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
+ name, value, len, 0);
+ kfree(name);
+ kfree(value);
+ return err;
+}
+
struct xattr_handler ext2_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = ext2_xattr_security_list,
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index d44431d1a338..ca7f00312388 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -15,66 +15,79 @@
#include "xip.h"
static inline int
-__inode_direct_access(struct inode *inode, sector_t sector, unsigned long *data) {
+__inode_direct_access(struct inode *inode, sector_t sector,
+ unsigned long *data)
+{
BUG_ON(!inode->i_sb->s_bdev->bd_disk->fops->direct_access);
return inode->i_sb->s_bdev->bd_disk->fops
->direct_access(inode->i_sb->s_bdev,sector,data);
}
+static inline int
+__ext2_get_sector(struct inode *inode, sector_t offset, int create,
+ sector_t *result)
+{
+ struct buffer_head tmp;
+ int rc;
+
+ memset(&tmp, 0, sizeof(struct buffer_head));
+ rc = ext2_get_block(inode, offset/ (PAGE_SIZE/512), &tmp,
+ create);
+ *result = tmp.b_blocknr;
+
+ /* did we get a sparse block (hole in the file)? */
+ if (!tmp.b_blocknr && !rc) {
+ BUG_ON(create);
+ rc = -ENODATA;
+ }
+
+ return rc;
+}
+
int
-ext2_clear_xip_target(struct inode *inode, int block) {
- sector_t sector = block*(PAGE_SIZE/512);
+ext2_clear_xip_target(struct inode *inode, int block)
+{
+ sector_t sector = block * (PAGE_SIZE/512);
unsigned long data;
int rc;
rc = __inode_direct_access(inode, sector, &data);
- if (rc)
- return rc;
- clear_page((void*)data);
- return 0;
+ if (!rc)
+ clear_page((void*)data);
+ return rc;
}
void ext2_xip_verify_sb(struct super_block *sb)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
- if ((sbi->s_mount_opt & EXT2_MOUNT_XIP)) {
- if ((sb->s_bdev == NULL) ||
- sb->s_bdev->bd_disk == NULL ||
- sb->s_bdev->bd_disk->fops == NULL ||
- sb->s_bdev->bd_disk->fops->direct_access == NULL) {
- sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
- ext2_warning(sb, __FUNCTION__,
- "ignoring xip option - not supported by bdev");
- }
+ if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) &&
+ !sb->s_bdev->bd_disk->fops->direct_access) {
+ sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
+ ext2_warning(sb, __FUNCTION__,
+ "ignoring xip option - not supported by bdev");
}
}
-struct page*
-ext2_get_xip_page(struct address_space *mapping, sector_t blockno,
+struct page *
+ext2_get_xip_page(struct address_space *mapping, sector_t offset,
int create)
{
int rc;
unsigned long data;
- struct buffer_head tmp;
+ sector_t sector;
- tmp.b_state = 0;
- tmp.b_blocknr = 0;
- rc = ext2_get_block(mapping->host, blockno/(PAGE_SIZE/512) , &tmp,
- create);
+ /* first, retrieve the sector number */
+ rc = __ext2_get_sector(mapping->host, offset, create, &sector);
if (rc)
- return ERR_PTR(rc);
- if (tmp.b_blocknr == 0) {
- /* SPARSE block */
- BUG_ON(create);
- return ERR_PTR(-ENODATA);
- }
+ goto error;
+ /* retrieve address of the target data */
rc = __inode_direct_access
- (mapping->host,tmp.b_blocknr*(PAGE_SIZE/512) ,&data);
- if (rc)
- return ERR_PTR(rc);
+ (mapping->host, sector * (PAGE_SIZE/512), &data);
+ if (!rc)
+ return virt_to_page(data);
- SetPageUptodate(virt_to_page(data));
- return virt_to_page(data);
+ error:
+ return ERR_PTR(rc);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-09 22:10:14 +0000