diff options
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 54a815e48ead..6464ea4acba9 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -29,6 +29,7 @@ #include <linux/sched/task.h> #include <uapi/linux/mount.h> #include <linux/fs_context.h> +#include <linux/shmem_fs.h> #include "pnode.h" #include "internal.h" @@ -2784,6 +2785,8 @@ static int do_new_mount(struct path *path, const char *fstype, int sb_flags, err = vfs_parse_fs_string(fc, "source", name, strlen(name)); if (!err) err = parse_monolithic_mount_data(fc, data); + if (!err && !mount_capable(fc)) + err = -EPERM; if (!err) err = vfs_get_tree(fc); if (!err) @@ -3291,8 +3294,8 @@ struct dentry *mount_subtree(struct vfsmount *m, const char *name) } EXPORT_SYMBOL(mount_subtree); -int ksys_mount(char __user *dev_name, char __user *dir_name, char __user *type, - unsigned long flags, void __user *data) +int ksys_mount(const char __user *dev_name, const char __user *dir_name, + const char __user *type, unsigned long flags, void __user *data) { int ret; char *kernel_type; @@ -3682,13 +3685,8 @@ static void __init init_mount_tree(void) struct mount *m; struct mnt_namespace *ns; struct path root; - struct file_system_type *type; - type = get_fs_type("rootfs"); - if (!type) - panic("Can't find rootfs type"); - mnt = vfs_kern_mount(type, 0, "rootfs", NULL); - put_filesystem(type); + mnt = vfs_kern_mount(&rootfs_fs_type, 0, "rootfs", NULL); if (IS_ERR(mnt)) panic("Can't create rootfs"); @@ -3741,6 +3739,7 @@ void __init mnt_init(void) fs_kobj = kobject_create_and_add("fs", NULL); if (!fs_kobj) printk(KERN_WARNING "%s: kobj create error\n", __func__); + shmem_init(); init_rootfs(); init_mount_tree(); } |