diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/Makefile | 2 | ||||
| -rw-r--r-- | fs/init.c | 25 | ||||
| -rw-r--r-- | fs/internal.h | 4 | ||||
| -rw-r--r-- | fs/namespace.c | 2 |
4 files changed, 31 insertions, 2 deletions
diff --git a/fs/Makefile b/fs/Makefile index 2ce5112b02c8..1c7b0e3f6daa 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -13,7 +13,7 @@ obj-y := open.o read_write.o file_table.o super.o \ seq_file.o xattr.o libfs.o fs-writeback.o \ pnode.o splice.o sync.o utimes.o d_path.o \ stack.o fs_struct.o statfs.o fs_pin.o nsfs.o \ - fs_types.o fs_context.o fs_parser.o fsopen.o + fs_types.o fs_context.o fs_parser.o fsopen.o init.o ifeq ($(CONFIG_BLOCK),y) obj-y += buffer.o block_dev.o direct-io.o mpage.o diff --git a/fs/init.c b/fs/init.c new file mode 100644 index 000000000000..c6eb724e1c7b --- /dev/null +++ b/fs/init.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Routines that mimic syscalls, but don't use the user address space or file + * descriptors. Only for init/ and related early init code. + */ +#include <linux/init.h> +#include <linux/mount.h> +#include <linux/namei.h> +#include <linux/fs.h> +#include <linux/init_syscalls.h> +#include "internal.h" + +int __init init_mount(const char *dev_name, const char *dir_name, + const char *type_page, unsigned long flags, void *data_page) +{ + struct path path; + int ret; + + ret = kern_path(dir_name, LOOKUP_FOLLOW, &path); + if (ret) + return ret; + ret = path_mount(dev_name, &path, type_page, flags, data_page); + path_put(&path); + return ret; +} diff --git a/fs/internal.h b/fs/internal.h index e903d5aae139..72ea0b6f7435 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -89,6 +89,10 @@ extern int __mnt_want_write_file(struct file *); extern void __mnt_drop_write_file(struct file *); extern void dissolve_on_fput(struct vfsmount *); + +int path_mount(const char *dev_name, struct path *path, + const char *type_page, unsigned long flags, void *data_page); + /* * fs_struct.c */ diff --git a/fs/namespace.c b/fs/namespace.c index 43834b59eff6..2c4d75920974 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3111,7 +3111,7 @@ char *copy_mount_string(const void __user *data) * Therefore, if this magic number is present, it carries no information * and must be discarded. */ -static int path_mount(const char *dev_name, struct path *path, +int path_mount(const char *dev_name, struct path *path, const char *type_page, unsigned long flags, void *data_page) { unsigned int mnt_flags = 0, sb_flags; |