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-rw-r--r--fs/exec.c10
-rw-r--r--fs/namei.c64
-rw-r--r--fs/open.c10
3 files changed, 64 insertions, 20 deletions
diff --git a/fs/exec.c b/fs/exec.c
index ad8798e26be9..c7f9b733406d 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -794,8 +794,14 @@ exit:
struct file *open_exec(const char *name)
{
- struct filename tmp = { .name = name };
- return do_open_execat(AT_FDCWD, &tmp, 0);
+ struct filename *filename = getname_kernel(name);
+ struct file *f = ERR_CAST(filename);
+
+ if (!IS_ERR(filename)) {
+ f = do_open_execat(AT_FDCWD, filename, 0);
+ putname(filename);
+ }
+ return f;
}
EXPORT_SYMBOL(open_exec);
diff --git a/fs/namei.c b/fs/namei.c
index 71dc1cc23b1a..0bc7742a591d 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2042,32 +2042,47 @@ static int filename_lookup(int dfd, struct filename *name,
static int do_path_lookup(int dfd, const char *name,
unsigned int flags, struct nameidata *nd)
{
- struct filename filename = { .name = name };
+ struct filename *filename = getname_kernel(name);
+ int retval = PTR_ERR(filename);
- return filename_lookup(dfd, &filename, flags, nd);
+ if (!IS_ERR(filename)) {
+ retval = filename_lookup(dfd, filename, flags, nd);
+ putname(filename);
+ }
+ return retval;
}
/* does lookup, returns the object with parent locked */
struct dentry *kern_path_locked(const char *name, struct path *path)
{
+ struct filename *filename = getname_kernel(name);
struct nameidata nd;
struct dentry *d;
- struct filename filename = {.name = name};
- int err = filename_lookup(AT_FDCWD, &filename, LOOKUP_PARENT, &nd);
- if (err)
- return ERR_PTR(err);
+ int err;
+
+ if (IS_ERR(filename))
+ return ERR_CAST(filename);
+
+ err = filename_lookup(AT_FDCWD, filename, LOOKUP_PARENT, &nd);
+ if (err) {
+ d = ERR_PTR(err);
+ goto out;
+ }
if (nd.last_type != LAST_NORM) {
path_put(&nd.path);
- return ERR_PTR(-EINVAL);
+ d = ERR_PTR(-EINVAL);
+ goto out;
}
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
d = __lookup_hash(&nd.last, nd.path.dentry, 0);
if (IS_ERR(d)) {
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
- return d;
+ goto out;
}
*path = nd.path;
+out:
+ putname(filename);
return d;
}
@@ -2399,8 +2414,14 @@ int
kern_path_mountpoint(int dfd, const char *name, struct path *path,
unsigned int flags)
{
- struct filename s = {.name = name};
- return filename_mountpoint(dfd, &s, path, flags);
+ struct filename *s = getname_kernel(name);
+ int retval = PTR_ERR(s);
+
+ if (!IS_ERR(s)) {
+ retval = filename_mountpoint(dfd, s, path, flags);
+ putname(s);
+ }
+ return retval;
}
EXPORT_SYMBOL(kern_path_mountpoint);
@@ -3280,7 +3301,7 @@ struct file *do_file_open_root(struct dentry *dentry, struct vfsmount *mnt,
{
struct nameidata nd;
struct file *file;
- struct filename filename = { .name = name };
+ struct filename *filename;
int flags = op->lookup_flags | LOOKUP_ROOT;
nd.root.mnt = mnt;
@@ -3289,11 +3310,16 @@ struct file *do_file_open_root(struct dentry *dentry, struct vfsmount *mnt,
if (d_is_symlink(dentry) && op->intent & LOOKUP_OPEN)
return ERR_PTR(-ELOOP);
- file = path_openat(-1, &filename, &nd, op, flags | LOOKUP_RCU);
+ filename = getname_kernel(name);
+ if (unlikely(IS_ERR(filename)))
+ return ERR_CAST(filename);
+
+ file = path_openat(-1, filename, &nd, op, flags | LOOKUP_RCU);
if (unlikely(file == ERR_PTR(-ECHILD)))
- file = path_openat(-1, &filename, &nd, op, flags);
+ file = path_openat(-1, filename, &nd, op, flags);
if (unlikely(file == ERR_PTR(-ESTALE)))
- file = path_openat(-1, &filename, &nd, op, flags | LOOKUP_REVAL);
+ file = path_openat(-1, filename, &nd, op, flags | LOOKUP_REVAL);
+ putname(filename);
return file;
}
@@ -3370,8 +3396,14 @@ out:
struct dentry *kern_path_create(int dfd, const char *pathname,
struct path *path, unsigned int lookup_flags)
{
- struct filename filename = {.name = pathname};
- return filename_create(dfd, &filename, path, lookup_flags);
+ struct filename *filename = getname_kernel(pathname);
+ struct dentry *res;
+
+ if (IS_ERR(filename))
+ return ERR_CAST(filename);
+ res = filename_create(dfd, filename, path, lookup_flags);
+ putname(filename);
+ return res;
}
EXPORT_SYMBOL(kern_path_create);
diff --git a/fs/open.c b/fs/open.c
index 813be037b412..d36c42ff019d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -971,8 +971,14 @@ struct file *file_open_name(struct filename *name, int flags, umode_t mode)
*/
struct file *filp_open(const char *filename, int flags, umode_t mode)
{
- struct filename name = {.name = filename};
- return file_open_name(&name, flags, mode);
+ struct filename *name = getname_kernel(filename);
+ struct file *file = ERR_CAST(name);
+
+ if (!IS_ERR(name)) {
+ file = file_open_name(name, flags, mode);
+ putname(name);
+ }
+ return file;
}
EXPORT_SYMBOL(filp_open);