cregit-Linux how code gets into the kernel

Release 4.10 fs/sysfs/mount.c

Directory: fs/sysfs
 * fs/sysfs/symlink.c - operations for initializing and mounting sysfs
 * Copyright (c) 2001-3 Patrick Mochel
 * Copyright (c) 2007 SUSE Linux Products GmbH
 * Copyright (c) 2007 Tejun Heo <>
 * This file is released under the GPLv2.
 * Please see Documentation/filesystems/sysfs.txt for more information.

#define DEBUG

#include <linux/fs.h>
#include <linux/magic.h>
#include <linux/mount.h>
#include <linux/init.h>
#include <linux/user_namespace.h>

#include "sysfs.h"

static struct kernfs_root *sysfs_root;

struct kernfs_node *sysfs_root_kn;

static struct dentry *sysfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { struct dentry *root; void *ns; bool new_sb; if (!(flags & MS_KERNMOUNT)) { if (!kobj_ns_current_may_mount(KOBJ_NS_TYPE_NET)) return ERR_PTR(-EPERM); } ns = kobj_ns_grab_current(KOBJ_NS_TYPE_NET); root = kernfs_mount_ns(fs_type, flags, sysfs_root, SYSFS_MAGIC, &new_sb, ns); if (IS_ERR(root) || !new_sb) kobj_ns_drop(KOBJ_NS_TYPE_NET, ns); else if (new_sb) root->d_sb->s_iflags |= SB_I_USERNS_VISIBLE; return root; }


eric w. biedermaneric w. biederman4335.54%541.67%
tejun heotejun heo4335.54%216.67%
patrick mochelpatrick mochel1915.70%18.33%
li zefanli zefan97.44%18.33%
al viroal viro43.31%18.33%
jianyu zhanjianyu zhan21.65%18.33%
andries brouwerandries brouwer10.83%18.33%

static void sysfs_kill_sb(struct super_block *sb) { void *ns = (void *)kernfs_super_ns(sb); kernfs_kill_sb(sb); kobj_ns_drop(KOBJ_NS_TYPE_NET, ns); }


tejun heotejun heo2672.22%266.67%
eric w. biedermaneric w. biederman1027.78%133.33%

static struct file_system_type sysfs_fs_type = { .name = "sysfs", .mount = sysfs_mount, .kill_sb = sysfs_kill_sb, .fs_flags = FS_USERNS_MOUNT, };
int __init sysfs_init(void) { int err; sysfs_root = kernfs_create_root(NULL, KERNFS_ROOT_EXTRA_OPEN_PERM_CHECK, NULL); if (IS_ERR(sysfs_root)) return PTR_ERR(sysfs_root); sysfs_root_kn = sysfs_root->kn; err = register_filesystem(&sysfs_fs_type); if (err) { kernfs_destroy_root(sysfs_root); return err; } return 0; }


tejun heotejun heo5278.79%777.78%
patrick mochelpatrick mochel1116.67%111.11%
peter zijlstrapeter zijlstra34.55%111.11%

Overall Contributors

tejun heotejun heo13045.94%1142.31%
eric w. biedermaneric w. biederman6221.91%623.08%
patrick mochelpatrick mochel6121.55%27.69%
li zefanli zefan93.18%13.85%
al viroal viro62.12%13.85%
jianyu zhanjianyu zhan51.77%13.85%
andrew mortonandrew morton31.06%13.85%
peter zijlstrapeter zijlstra31.06%13.85%
david s. millerdavid s. miller31.06%13.85%
andries brouwerandries brouwer10.35%13.85%
Directory: fs/sysfs
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.