diff options
| -rw-r--r-- | fs/exec.c | 10 | ||||
| -rw-r--r-- | fs/namei.c | 64 | ||||
| -rw-r--r-- | fs/open.c | 10 |
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); |