summaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/qgroup.c2
-rw-r--r--fs/btrfs/super.c3
-rw-r--r--fs/char_dev.c2
-rw-r--r--fs/dlm/plock.c3
-rw-r--r--fs/dlm/user.c9
-rw-r--r--fs/ecryptfs/mmap.c2
-rw-r--r--fs/exec.c10
-rw-r--r--fs/freevxfs/vxfs_lookup.c2
-rw-r--r--fs/fs-writeback.c22
-rw-r--r--fs/libfs.c2
-rw-r--r--fs/namespace.c33
-rw-r--r--fs/nsfs.c10
-rw-r--r--fs/ntfs/super.c2
-rw-r--r--fs/ocfs2/ocfs2_fs.h4
-rw-r--r--fs/ocfs2/stack_user.c9
-rw-r--r--fs/open.c2
-rw-r--r--fs/proc/root.c2
-rw-r--r--fs/sysfs/mount.c4
18 files changed, 77 insertions, 46 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 8a8202956576..d904ee1c5349 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -376,7 +376,7 @@ int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info)
qgroup = find_qgroup_rb(fs_info, found_key.offset);
if ((qgroup && found_key.type == BTRFS_QGROUP_INFO_KEY) ||
(!qgroup && found_key.type == BTRFS_QGROUP_LIMIT_KEY)) {
- btrfs_err(fs_info, "inconsitent qgroup config");
+ btrfs_err(fs_info, "inconsistent qgroup config");
flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
}
if (!qgroup) {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index cd7ef34d2dce..6bad63379a4c 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2163,8 +2163,7 @@ static int btrfs_interface_init(void)
static void btrfs_interface_exit(void)
{
- if (misc_deregister(&btrfs_misc) < 0)
- printk(KERN_INFO "BTRFS: misc_deregister failed for control device\n");
+ misc_deregister(&btrfs_misc);
}
static void btrfs_print_info(void)
diff --git a/fs/char_dev.c b/fs/char_dev.c
index ea06a3d0364c..24b142569ca9 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -274,7 +274,7 @@ out2:
}
/**
- * unregister_chrdev_region() - return a range of device numbers
+ * unregister_chrdev_region() - unregister a range of device numbers
* @from: the first in the range of numbers to unregister
* @count: the number of device numbers to unregister
*
diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c
index e0ab3a93eeff..5532f097f6da 100644
--- a/fs/dlm/plock.c
+++ b/fs/dlm/plock.c
@@ -509,7 +509,6 @@ int dlm_plock_init(void)
void dlm_plock_exit(void)
{
- if (misc_deregister(&plock_dev_misc) < 0)
- log_print("dlm_plock_exit: misc_deregister failed");
+ misc_deregister(&plock_dev_misc);
}
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index fb85f32e9eca..75ecc0d3bc85 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -362,18 +362,15 @@ fail:
int dlm_device_deregister(struct dlm_ls *ls)
{
- int error;
-
/* The device is not registered. This happens when the lockspace
was never used from userspace, or when device_create_lockspace()
calls dlm_release_lockspace() after the register fails. */
if (!ls->ls_device.name)
return 0;
- error = misc_deregister(&ls->ls_device);
- if (!error)
- kfree(ls->ls_device.name);
- return error;
+ misc_deregister(&ls->ls_device);
+ kfree(ls->ls_device.name);
+ return 0;
}
static int device_user_purge(struct dlm_user_proc *proc,
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index cf208522998e..caba848ac763 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -299,7 +299,7 @@ static int ecryptfs_write_begin(struct file *file,
rc = ecryptfs_read_lower_page_segment(
page, index, 0, PAGE_CACHE_SIZE, mapping->host);
if (rc) {
- printk(KERN_ERR "%s: Error attemping to read "
+ printk(KERN_ERR "%s: Error attempting to read "
"lower page segment; rc = [%d]\n",
__func__, rc);
ClearPageUptodate(page);
diff --git a/fs/exec.c b/fs/exec.c
index 1977c2a553ac..b06623a9347f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -98,6 +98,12 @@ static inline void put_binfmt(struct linux_binfmt * fmt)
module_put(fmt->module);
}
+bool path_noexec(const struct path *path)
+{
+ return (path->mnt->mnt_flags & MNT_NOEXEC) ||
+ (path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC);
+}
+
#ifdef CONFIG_USELIB
/*
* Note that a shared library must be both readable and executable due to
@@ -132,7 +138,7 @@ SYSCALL_DEFINE1(uselib, const char __user *, library)
goto exit;
error = -EACCES;
- if (file->f_path.mnt->mnt_flags & MNT_NOEXEC)
+ if (path_noexec(&file->f_path))
goto exit;
fsnotify_open(file);
@@ -777,7 +783,7 @@ static struct file *do_open_execat(int fd, struct filename *name, int flags)
if (!S_ISREG(file_inode(file)->i_mode))
goto exit;
- if (file->f_path.mnt->mnt_flags & MNT_NOEXEC)
+ if (path_noexec(&file->f_path))
goto exit;
err = deny_write_access(file);
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
index 484b32d3234a..1cff72df0389 100644
--- a/fs/freevxfs/vxfs_lookup.c
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -192,7 +192,7 @@ vxfs_inode_by_name(struct inode *dip, struct dentry *dp)
* by @dp in @dip.
*
* Returns:
- * A NULL-pointer on success, else an negative error code encoded
+ * A NULL-pointer on success, else a negative error code encoded
* in the return pointer.
*/
static struct dentry *
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 518c6294bf6c..5fa588e933d5 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -844,14 +844,15 @@ static void bdi_split_work_to_wbs(struct backing_dev_info *bdi,
struct wb_iter iter;
might_sleep();
-
- if (!bdi_has_dirty_io(bdi))
- return;
restart:
rcu_read_lock();
bdi_for_each_wb(wb, bdi, &iter, next_blkcg_id) {
- if (!wb_has_dirty_io(wb) ||
- (skip_if_busy && writeback_in_progress(wb)))
+ /* SYNC_ALL writes out I_DIRTY_TIME too */
+ if (!wb_has_dirty_io(wb) &&
+ (base_work->sync_mode == WB_SYNC_NONE ||
+ list_empty(&wb->b_dirty_time)))
+ continue;
+ if (skip_if_busy && writeback_in_progress(wb))
continue;
base_work->nr_pages = wb_split_bdi_pages(wb, nr_pages);
@@ -899,8 +900,7 @@ static void bdi_split_work_to_wbs(struct backing_dev_info *bdi,
{
might_sleep();
- if (bdi_has_dirty_io(bdi) &&
- (!skip_if_busy || !writeback_in_progress(&bdi->wb))) {
+ if (!skip_if_busy || !writeback_in_progress(&bdi->wb)) {
base_work->auto_free = 0;
base_work->single_wait = 0;
base_work->single_done = 0;
@@ -2275,8 +2275,12 @@ void sync_inodes_sb(struct super_block *sb)
};
struct backing_dev_info *bdi = sb->s_bdi;
- /* Nothing to do? */
- if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
+ /*
+ * Can't skip on !bdi_has_dirty() because we should wait for !dirty
+ * inodes under writeback and I_DIRTY_TIME inodes ignored by
+ * bdi_has_dirty() need to be written out too.
+ */
+ if (bdi == &noop_backing_dev_info)
return;
WARN_ON(!rwsem_is_locked(&sb->s_umount));
diff --git a/fs/libfs.c b/fs/libfs.c
index 102edfd39000..c7cbfb092e94 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1185,7 +1185,7 @@ void make_empty_dir_inode(struct inode *inode)
inode->i_uid = GLOBAL_ROOT_UID;
inode->i_gid = GLOBAL_ROOT_GID;
inode->i_rdev = 0;
- inode->i_size = 2;
+ inode->i_size = 0;
inode->i_blkbits = PAGE_SHIFT;
inode->i_blocks = 0;
diff --git a/fs/namespace.c b/fs/namespace.c
index 2b8aa15fd6df..0570729c87fd 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -3218,6 +3218,8 @@ static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags)
down_read(&namespace_sem);
list_for_each_entry(mnt, &ns->list, mnt_list) {
struct mount *child;
+ int mnt_flags;
+
if (mnt->mnt.mnt_sb->s_type != type)
continue;
@@ -3227,17 +3229,30 @@ static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags)
if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
continue;
+ /* Read the mount flags and filter out flags that
+ * may safely be ignored.
+ */
+ mnt_flags = mnt->mnt.mnt_flags;
+ if (mnt->mnt.mnt_sb->s_iflags & SB_I_NOEXEC)
+ mnt_flags &= ~(MNT_LOCK_NOSUID | MNT_LOCK_NOEXEC);
+
/* Verify the mount flags are equal to or more permissive
* than the proposed new mount.
*/
- if ((mnt->mnt.mnt_flags & MNT_LOCK_READONLY) &&
+ if ((mnt_flags & MNT_LOCK_READONLY) &&
!(new_flags & MNT_READONLY))
continue;
- if ((mnt->mnt.mnt_flags & MNT_LOCK_NODEV) &&
+ if ((mnt_flags & MNT_LOCK_NODEV) &&
!(new_flags & MNT_NODEV))
continue;
- if ((mnt->mnt.mnt_flags & MNT_LOCK_ATIME) &&
- ((mnt->mnt.mnt_flags & MNT_ATIME_MASK) != (new_flags & MNT_ATIME_MASK)))
+ if ((mnt_flags & MNT_LOCK_NOSUID) &&
+ !(new_flags & MNT_NOSUID))
+ continue;
+ if ((mnt_flags & MNT_LOCK_NOEXEC) &&
+ !(new_flags & MNT_NOEXEC))
+ continue;
+ if ((mnt_flags & MNT_LOCK_ATIME) &&
+ ((mnt_flags & MNT_ATIME_MASK) != (new_flags & MNT_ATIME_MASK)))
continue;
/* This mount is not fully visible if there are any
@@ -3247,16 +3262,18 @@ static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags)
list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
struct inode *inode = child->mnt_mountpoint->d_inode;
/* Only worry about locked mounts */
- if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
+ if (!(mnt_flags & MNT_LOCKED))
continue;
/* Is the directory permanetly empty? */
if (!is_empty_dir_inode(inode))
goto next;
}
/* Preserve the locked attributes */
- *new_mnt_flags |= mnt->mnt.mnt_flags & (MNT_LOCK_READONLY | \
- MNT_LOCK_NODEV | \
- MNT_LOCK_ATIME);
+ *new_mnt_flags |= mnt_flags & (MNT_LOCK_READONLY | \
+ MNT_LOCK_NODEV | \
+ MNT_LOCK_NOSUID | \
+ MNT_LOCK_NOEXEC | \
+ MNT_LOCK_ATIME);
visible = true;
goto found;
next: ;
diff --git a/fs/nsfs.c b/fs/nsfs.c
index 99521e7c492b..e4905fbf3396 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -4,6 +4,7 @@
#include <linux/proc_ns.h>
#include <linux/magic.h>
#include <linux/ktime.h>
+#include <linux/seq_file.h>
static struct vfsmount *nsfs_mnt;
@@ -136,9 +137,18 @@ out_invalid:
return ERR_PTR(-EINVAL);
}
+static int nsfs_show_path(struct seq_file *seq, struct dentry *dentry)
+{
+ struct inode *inode = d_inode(dentry);
+ const struct proc_ns_operations *ns_ops = dentry->d_fsdata;
+
+ return seq_printf(seq, "%s:[%lu]", ns_ops->name, inode->i_ino);
+}
+
static const struct super_operations nsfs_ops = {
.statfs = simple_statfs,
.evict_inode = nsfs_evict,
+ .show_path = nsfs_show_path,
};
static struct dentry *nsfs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 9e1e112074fb..c1128bcbeb5e 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -543,7 +543,7 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
return -EROFS;
}
if (!ntfs_stamp_usnjrnl(vol)) {
- ntfs_error(sb, "Failed to stamp transation log "
+ ntfs_error(sb, "Failed to stamp transaction log "
"($UsnJrnl)%s", es);
NVolSetErrors(vol);
return -EROFS;
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index db64ce2d4667..540ab5b75dbb 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -168,7 +168,7 @@
/* Refcount tree support */
#define OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE 0x1000
-/* Discontigous block groups */
+/* Discontiguous block groups */
#define OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG 0x2000
/*
@@ -939,7 +939,7 @@ struct ocfs2_group_desc
/*
* Block groups may be discontiguous when
* OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG is set.
- * The extents of a discontigous block group are
+ * The extents of a discontiguous block group are
* stored in bg_list. It is a flat list.
* l_tree_depth must always be zero. A
* discontiguous group is signified by a non-zero
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 2768eb1da2b8..ced70c8139f7 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -655,14 +655,7 @@ static int ocfs2_control_init(void)
static void ocfs2_control_exit(void)
{
- int rc;
-
- rc = misc_deregister(&ocfs2_control_device);
- if (rc)
- printk(KERN_ERR
- "ocfs2: Unable to deregister ocfs2_control device "
- "(errno %d)\n",
- -rc);
+ misc_deregister(&ocfs2_control_device);
}
static void fsdlm_lock_ast_wrapper(void *astarg)
diff --git a/fs/open.c b/fs/open.c
index e33dab287fa0..b6f1e96a7c0b 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -377,7 +377,7 @@ retry:
* with the "noexec" flag.
*/
res = -EACCES;
- if (path.mnt->mnt_flags & MNT_NOEXEC)
+ if (path_noexec(&path))
goto out_path_release;
}
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 68feb0f70e63..361ab4ee42fc 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -134,6 +134,8 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
}
sb->s_flags |= MS_ACTIVE;
+ /* User space would break if executables appear on proc */
+ sb->s_iflags |= SB_I_NOEXEC;
}
return dget(sb->s_root);
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 1c6ac6fcee9f..f3db82071cfb 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -40,6 +40,10 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
SYSFS_MAGIC, &new_sb, ns);
if (IS_ERR(root) || !new_sb)
kobj_ns_drop(KOBJ_NS_TYPE_NET, ns);
+ else if (new_sb)
+ /* Userspace would break if executables appear on sysfs */
+ root->d_sb->s_iflags |= SB_I_NOEXEC;
+
return root;
}