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-rw-r--r--arch/s390/hypfs/inode.c2
-rw-r--r--drivers/infiniband/hw/qib/qib_fs.c2
-rw-r--r--fs/coda/pioctl.c7
-rw-r--r--fs/devpts/inode.c2
-rw-r--r--fs/namei.c64
-rw-r--r--fs/namespace.c10
-rw-r--r--fs/nfs/nfstrace.h2
-rw-r--r--fs/xfs/xfs_ioctl.c2
-rw-r--r--include/linux/audit.h21
-rw-r--r--include/linux/namei.h63
10 files changed, 64 insertions, 111 deletions
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index ccad1398abd4..a4418fc425b8 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -76,7 +76,7 @@ static void hypfs_remove(struct dentry *dentry)
else
simple_unlink(d_inode(parent), dentry);
}
- d_delete(dentry);
+ d_drop(dentry);
dput(dentry);
inode_unlock(d_inode(parent));
}
diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c
index 41a569558a15..e336d778e076 100644
--- a/drivers/infiniband/hw/qib/qib_fs.c
+++ b/drivers/infiniband/hw/qib/qib_fs.c
@@ -493,7 +493,7 @@ static int remove_device_files(struct super_block *sb,
remove_file(dir, "flash");
inode_unlock(d_inode(dir));
ret = simple_rmdir(d_inode(root), dir);
- d_delete(dir);
+ d_drop(dir);
dput(dir);
bail:
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 644d48c12ce8..3aec27e5eb82 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -63,11 +63,8 @@ static long coda_pioctl(struct file *filp, unsigned int cmd,
* Look up the pathname. Note that the pathname is in
* user memory, and namei takes care of this
*/
- if (data.follow)
- error = user_path(data.path, &path);
- else
- error = user_lpath(data.path, &path);
-
+ error = user_path_at(AT_FDCWD, data.path,
+ data.follow ? LOOKUP_FOLLOW : 0, &path);
if (error)
return error;
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index beeadca23b05..42e5a766d33c 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -622,7 +622,7 @@ void devpts_pty_kill(struct dentry *dentry)
dentry->d_fsdata = NULL;
drop_nlink(dentry->d_inode);
fsnotify_unlink(d_inode(dentry->d_parent), dentry);
- d_delete(dentry);
+ d_drop(dentry);
dput(dentry); /* d_alloc_name() in devpts_pty_new() */
}
diff --git a/fs/namei.c b/fs/namei.c
index 209c51a5226c..671c3c1a3425 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -596,14 +596,12 @@ static void terminate_walk(struct nameidata *nd)
path_put(&nd->path);
for (i = 0; i < nd->depth; i++)
path_put(&nd->stack[i].link);
- if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT)) {
+ if (nd->flags & LOOKUP_ROOT_GRABBED) {
path_put(&nd->root);
- nd->root.mnt = NULL;
+ nd->flags &= ~LOOKUP_ROOT_GRABBED;
}
} else {
nd->flags &= ~LOOKUP_RCU;
- if (!(nd->flags & LOOKUP_ROOT))
- nd->root.mnt = NULL;
rcu_read_unlock();
}
nd->depth = 0;
@@ -641,6 +639,14 @@ static bool legitimize_links(struct nameidata *nd)
return true;
}
+static bool legitimize_root(struct nameidata *nd)
+{
+ if (!nd->root.mnt || (nd->flags & LOOKUP_ROOT))
+ return true;
+ nd->flags |= LOOKUP_ROOT_GRABBED;
+ return legitimize_path(nd, &nd->root, nd->root_seq);
+}
+
/*
* Path walking has 2 modes, rcu-walk and ref-walk (see
* Documentation/filesystems/path-lookup.txt). In situations when we can't
@@ -671,23 +677,18 @@ static int unlazy_walk(struct nameidata *nd)
nd->flags &= ~LOOKUP_RCU;
if (unlikely(!legitimize_links(nd)))
- goto out2;
- if (unlikely(!legitimize_path(nd, &nd->path, nd->seq)))
goto out1;
- if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT)) {
- if (unlikely(!legitimize_path(nd, &nd->root, nd->root_seq)))
- goto out;
- }
+ if (unlikely(!legitimize_path(nd, &nd->path, nd->seq)))
+ goto out;
+ if (unlikely(!legitimize_root(nd)))
+ goto out;
rcu_read_unlock();
BUG_ON(nd->inode != parent->d_inode);
return 0;
-out2:
+out1:
nd->path.mnt = NULL;
nd->path.dentry = NULL;
-out1:
- if (!(nd->flags & LOOKUP_ROOT))
- nd->root.mnt = NULL;
out:
rcu_read_unlock();
return -ECHILD;
@@ -727,23 +728,14 @@ static int unlazy_child(struct nameidata *nd, struct dentry *dentry, unsigned se
*/
if (unlikely(!lockref_get_not_dead(&dentry->d_lockref)))
goto out;
- if (unlikely(read_seqcount_retry(&dentry->d_seq, seq))) {
- rcu_read_unlock();
- dput(dentry);
- goto drop_root_mnt;
- }
+ if (unlikely(read_seqcount_retry(&dentry->d_seq, seq)))
+ goto out_dput;
/*
* Sequence counts matched. Now make sure that the root is
* still valid and get it if required.
*/
- if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT)) {
- if (unlikely(!legitimize_path(nd, &nd->root, nd->root_seq))) {
- rcu_read_unlock();
- dput(dentry);
- return -ECHILD;
- }
- }
-
+ if (unlikely(!legitimize_root(nd)))
+ goto out_dput;
rcu_read_unlock();
return 0;
@@ -753,9 +745,10 @@ out1:
nd->path.dentry = NULL;
out:
rcu_read_unlock();
-drop_root_mnt:
- if (!(nd->flags & LOOKUP_ROOT))
- nd->root.mnt = NULL;
+ return -ECHILD;
+out_dput:
+ rcu_read_unlock();
+ dput(dentry);
return -ECHILD;
}
@@ -819,6 +812,7 @@ static void set_root(struct nameidata *nd)
} while (read_seqcount_retry(&fs->seq, seq));
} else {
get_fs_root(fs, &nd->root);
+ nd->flags |= LOOKUP_ROOT_GRABBED;
}
}
@@ -1735,8 +1729,6 @@ static int pick_link(struct nameidata *nd, struct path *link,
nd->flags &= ~LOOKUP_RCU;
nd->path.mnt = NULL;
nd->path.dentry = NULL;
- if (!(nd->flags & LOOKUP_ROOT))
- nd->root.mnt = NULL;
rcu_read_unlock();
} else if (likely(unlazy_walk(nd)) == 0)
error = nd_alloc_stack(nd);
@@ -2350,7 +2342,7 @@ int filename_lookup(int dfd, struct filename *name, unsigned flags,
retval = path_lookupat(&nd, flags | LOOKUP_REVAL, path);
if (likely(!retval))
- audit_inode(name, path->dentry, flags & LOOKUP_PARENT);
+ audit_inode(name, path->dentry, 0);
restore_nameidata();
putname(name);
return retval;
@@ -2391,7 +2383,7 @@ static struct filename *filename_parentat(int dfd, struct filename *name,
if (likely(!retval)) {
*last = nd.last;
*type = nd.last_type;
- audit_inode(name, parent->dentry, LOOKUP_PARENT);
+ audit_inode(name, parent->dentry, AUDIT_INODE_PARENT);
} else {
putname(name);
name = ERR_PTR(retval);
@@ -2718,7 +2710,7 @@ filename_mountpoint(int dfd, struct filename *name, struct path *path,
if (unlikely(error == -ESTALE))
error = path_mountpoint(&nd, flags | LOOKUP_REVAL, path);
if (likely(!error))
- audit_inode(name, path->dentry, flags & LOOKUP_NO_EVAL);
+ audit_inode(name, path->dentry, AUDIT_INODE_NOEVAL);
restore_nameidata();
putname(name);
return error;
@@ -3299,7 +3291,7 @@ static int do_last(struct nameidata *nd,
if (error)
return error;
- audit_inode(nd->name, dir, LOOKUP_PARENT);
+ audit_inode(nd->name, dir, AUDIT_INODE_PARENT);
/* trailing slashes? */
if (unlikely(nd->last.name[nd->last.len]))
return -EISDIR;
diff --git a/fs/namespace.c b/fs/namespace.c
index d28d30b13043..81edb7e7ddfd 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1675,8 +1675,6 @@ int ksys_umount(char __user *name, int flags)
if (!(flags & UMOUNT_NOFOLLOW))
lookup_flags |= LOOKUP_FOLLOW;
- lookup_flags |= LOOKUP_NO_EVAL;
-
retval = user_path_mountpoint_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
@@ -3046,7 +3044,7 @@ long do_mount(const char *dev_name, const char __user *dir_name,
return -EINVAL;
/* ... and get the mountpoint */
- retval = user_path(dir_name, &path);
+ retval = user_path_at(AT_FDCWD, dir_name, LOOKUP_FOLLOW, &path);
if (retval)
return retval;
@@ -3593,11 +3591,13 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
if (!may_mount())
return -EPERM;
- error = user_path_dir(new_root, &new);
+ error = user_path_at(AT_FDCWD, new_root,
+ LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &new);
if (error)
goto out0;
- error = user_path_dir(put_old, &old);
+ error = user_path_at(AT_FDCWD, put_old,
+ LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &old);
if (error)
goto out1;
diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h
index 976d4089e267..361cc10d6f95 100644
--- a/fs/nfs/nfstrace.h
+++ b/fs/nfs/nfstrace.h
@@ -207,7 +207,6 @@ TRACE_DEFINE_ENUM(LOOKUP_PARENT);
TRACE_DEFINE_ENUM(LOOKUP_REVAL);
TRACE_DEFINE_ENUM(LOOKUP_RCU);
TRACE_DEFINE_ENUM(LOOKUP_NO_REVAL);
-TRACE_DEFINE_ENUM(LOOKUP_NO_EVAL);
TRACE_DEFINE_ENUM(LOOKUP_OPEN);
TRACE_DEFINE_ENUM(LOOKUP_CREATE);
TRACE_DEFINE_ENUM(LOOKUP_EXCL);
@@ -226,7 +225,6 @@ TRACE_DEFINE_ENUM(LOOKUP_DOWN);
{ LOOKUP_REVAL, "REVAL" }, \
{ LOOKUP_RCU, "RCU" }, \
{ LOOKUP_NO_REVAL, "NO_REVAL" }, \
- { LOOKUP_NO_EVAL, "NO_EVAL" }, \
{ LOOKUP_OPEN, "OPEN" }, \
{ LOOKUP_CREATE, "CREATE" }, \
{ LOOKUP_EXCL, "EXCL" }, \
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 6f7848cd5527..affa557c2337 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -67,7 +67,7 @@ xfs_find_handle(
return -EBADF;
inode = file_inode(f.file);
} else {
- error = user_lpath((const char __user *)hreq->path, &path);
+ error = user_path_at(AT_FDCWD, hreq->path, 0, &path);
if (error)
return error;
inode = d_inode(path.dentry);
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 97d0925454df..aee3dc9eb378 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -11,7 +11,6 @@
#include <linux/sched.h>
#include <linux/ptrace.h>
-#include <linux/namei.h> /* LOOKUP_* */
#include <uapi/linux/audit.h>
#define AUDIT_INO_UNSET ((unsigned long)-1)
@@ -252,6 +251,10 @@ static inline int audit_signal_info(int sig, struct task_struct *t)
#define audit_is_compat(arch) false
#endif
+#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
+#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
+#define AUDIT_INODE_NOEVAL 4 /* audit record incomplete */
+
#ifdef CONFIG_AUDITSYSCALL
#include <asm/syscall.h> /* for syscall_get_arch() */
@@ -265,9 +268,6 @@ extern void __audit_syscall_exit(int ret_success, long ret_value);
extern struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
-#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
-#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
-#define AUDIT_INODE_NOEVAL 4 /* audit record incomplete */
extern void __audit_inode(struct filename *name, const struct dentry *dentry,
unsigned int flags);
extern void __audit_file(const struct file *);
@@ -328,16 +328,9 @@ static inline void audit_getname(struct filename *name)
}
static inline void audit_inode(struct filename *name,
const struct dentry *dentry,
- unsigned int flags) {
- if (unlikely(!audit_dummy_context())) {
- unsigned int aflags = 0;
-
- if (flags & LOOKUP_PARENT)
- aflags |= AUDIT_INODE_PARENT;
- if (flags & LOOKUP_NO_EVAL)
- aflags |= AUDIT_INODE_NOEVAL;
+ unsigned int aflags) {
+ if (unlikely(!audit_dummy_context()))
__audit_inode(name, dentry, aflags);
- }
}
static inline void audit_file(struct file *file)
{
@@ -561,7 +554,7 @@ static inline void __audit_inode_child(struct inode *parent,
{ }
static inline void audit_inode(struct filename *name,
const struct dentry *dentry,
- unsigned int parent)
+ unsigned int aflags)
{ }
static inline void audit_file(struct file *file)
{
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 9138b4471dbf..397a08ade6a2 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -16,39 +16,28 @@ enum { MAX_NESTED_LINKS = 8 };
*/
enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
-/*
- * The bitmask for a lookup event:
- * - follow links at the end
- * - require a directory
- * - ending slashes ok even for nonexistent files
- * - internal "there are more path components" flag
- * - dentry cache is untrusted; force a real lookup
- * - suppress terminal automount
- * - skip revalidation
- * - don't fetch xattrs on audit_inode
- */
-#define LOOKUP_FOLLOW 0x0001
-#define LOOKUP_DIRECTORY 0x0002
-#define LOOKUP_AUTOMOUNT 0x0004
-
+/* pathwalk mode */
+#define LOOKUP_FOLLOW 0x0001 /* follow links at the end */
+#define LOOKUP_DIRECTORY 0x0002 /* require a directory */
+#define LOOKUP_AUTOMOUNT 0x0004 /* force terminal automount */
+#define LOOKUP_EMPTY 0x4000 /* accept empty path [user_... only] */
+#define LOOKUP_DOWN 0x8000 /* follow mounts in the starting point */
+
+#define LOOKUP_REVAL 0x0020 /* tell ->d_revalidate() to trust no cache */
+#define LOOKUP_RCU 0x0040 /* RCU pathwalk mode; semi-internal */
+
+/* These tell filesystem methods that we are dealing with the final component... */
+#define LOOKUP_OPEN 0x0100 /* ... in open */
+#define LOOKUP_CREATE 0x0200 /* ... in object creation */
+#define LOOKUP_EXCL 0x0400 /* ... in exclusive creation */
+#define LOOKUP_RENAME_TARGET 0x0800 /* ... in destination of rename() */
+
+/* internal use only */
#define LOOKUP_PARENT 0x0010
-#define LOOKUP_REVAL 0x0020
-#define LOOKUP_RCU 0x0040
#define LOOKUP_NO_REVAL 0x0080
-#define LOOKUP_NO_EVAL 0x0100
-
-/*
- * Intent data
- */
-#define LOOKUP_OPEN 0x0100
-#define LOOKUP_CREATE 0x0200
-#define LOOKUP_EXCL 0x0400
-#define LOOKUP_RENAME_TARGET 0x0800
-
#define LOOKUP_JUMPED 0x1000
#define LOOKUP_ROOT 0x2000
-#define LOOKUP_EMPTY 0x4000
-#define LOOKUP_DOWN 0x8000
+#define LOOKUP_ROOT_GRABBED 0x0008
extern int path_pts(struct path *path);
@@ -60,22 +49,6 @@ static inline int user_path_at(int dfd, const char __user *name, unsigned flags,
return user_path_at_empty(dfd, name, flags, path, NULL);
}
-static inline int user_path(const char __user *name, struct path *path)
-{
- return user_path_at_empty(AT_FDCWD, name, LOOKUP_FOLLOW, path, NULL);
-}
-
-static inline int user_lpath(const char __user *name, struct path *path)
-{
- return user_path_at_empty(AT_FDCWD, name, 0, path, NULL);
-}
-
-static inline int user_path_dir(const char __user *name, struct path *path)
-{
- return user_path_at_empty(AT_FDCWD, name,
- LOOKUP_FOLLOW | LOOKUP_DIRECTORY, path, NULL);
-}
-
extern int kern_path(const char *, unsigned, struct path *);
extern struct dentry *kern_path_create(int, const char *, struct path *, unsigned int);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 04:53:22 +0000