diff options
Diffstat (limited to 'fs/sysfs/mount.c')
| -rw-r--r-- | fs/sysfs/mount.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index f2af22574c50..266895783b47 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c | |||
| @@ -23,7 +23,7 @@ | |||
| 23 | #include "sysfs.h" | 23 | #include "sysfs.h" |
| 24 | 24 | ||
| 25 | 25 | ||
| 26 | static struct vfsmount *sysfs_mount; | 26 | static struct vfsmount *sysfs_mnt; |
| 27 | struct kmem_cache *sysfs_dir_cachep; | 27 | struct kmem_cache *sysfs_dir_cachep; |
| 28 | 28 | ||
| 29 | static const struct super_operations sysfs_ops = { | 29 | static const struct super_operations sysfs_ops = { |
| @@ -95,18 +95,17 @@ static int sysfs_set_super(struct super_block *sb, void *data) | |||
| 95 | return error; | 95 | return error; |
| 96 | } | 96 | } |
| 97 | 97 | ||
| 98 | static int sysfs_get_sb(struct file_system_type *fs_type, | 98 | static struct dentry *sysfs_mount(struct file_system_type *fs_type, |
| 99 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | 99 | int flags, const char *dev_name, void *data) |
| 100 | { | 100 | { |
| 101 | struct sysfs_super_info *info; | 101 | struct sysfs_super_info *info; |
| 102 | enum kobj_ns_type type; | 102 | enum kobj_ns_type type; |
| 103 | struct super_block *sb; | 103 | struct super_block *sb; |
| 104 | int error; | 104 | int error; |
| 105 | 105 | ||
| 106 | error = -ENOMEM; | ||
| 107 | info = kzalloc(sizeof(*info), GFP_KERNEL); | 106 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 108 | if (!info) | 107 | if (!info) |
| 109 | goto out; | 108 | return ERR_PTR(-ENOMEM); |
| 110 | 109 | ||
| 111 | for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) | 110 | for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) |
| 112 | info->ns[type] = kobj_ns_current(type); | 111 | info->ns[type] = kobj_ns_current(type); |
| @@ -114,24 +113,19 @@ static int sysfs_get_sb(struct file_system_type *fs_type, | |||
| 114 | sb = sget(fs_type, sysfs_test_super, sysfs_set_super, info); | 113 | sb = sget(fs_type, sysfs_test_super, sysfs_set_super, info); |
| 115 | if (IS_ERR(sb) || sb->s_fs_info != info) | 114 | if (IS_ERR(sb) || sb->s_fs_info != info) |
| 116 | kfree(info); | 115 | kfree(info); |
| 117 | if (IS_ERR(sb)) { | 116 | if (IS_ERR(sb)) |
| 118 | error = PTR_ERR(sb); | 117 | return ERR_CAST(sb); |
| 119 | goto out; | ||
| 120 | } | ||
| 121 | if (!sb->s_root) { | 118 | if (!sb->s_root) { |
| 122 | sb->s_flags = flags; | 119 | sb->s_flags = flags; |
| 123 | error = sysfs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0); | 120 | error = sysfs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0); |
| 124 | if (error) { | 121 | if (error) { |
| 125 | deactivate_locked_super(sb); | 122 | deactivate_locked_super(sb); |
| 126 | goto out; | 123 | return ERR_PTR(error); |
| 127 | } | 124 | } |
| 128 | sb->s_flags |= MS_ACTIVE; | 125 | sb->s_flags |= MS_ACTIVE; |
| 129 | } | 126 | } |
| 130 | 127 | ||
| 131 | simple_set_mnt(mnt, sb); | 128 | return dget(sb->s_root); |
| 132 | error = 0; | ||
| 133 | out: | ||
| 134 | return error; | ||
| 135 | } | 129 | } |
| 136 | 130 | ||
| 137 | static void sysfs_kill_sb(struct super_block *sb) | 131 | static void sysfs_kill_sb(struct super_block *sb) |
| @@ -147,7 +141,7 @@ static void sysfs_kill_sb(struct super_block *sb) | |||
| 147 | 141 | ||
| 148 | static struct file_system_type sysfs_fs_type = { | 142 | static struct file_system_type sysfs_fs_type = { |
| 149 | .name = "sysfs", | 143 | .name = "sysfs", |
| 150 | .get_sb = sysfs_get_sb, | 144 | .mount = sysfs_mount, |
| 151 | .kill_sb = sysfs_kill_sb, | 145 | .kill_sb = sysfs_kill_sb, |
| 152 | }; | 146 | }; |
| 153 | 147 | ||
| @@ -189,11 +183,11 @@ int __init sysfs_init(void) | |||
| 189 | 183 | ||
| 190 | err = register_filesystem(&sysfs_fs_type); | 184 | err = register_filesystem(&sysfs_fs_type); |
| 191 | if (!err) { | 185 | if (!err) { |
| 192 | sysfs_mount = kern_mount(&sysfs_fs_type); | 186 | sysfs_mnt = kern_mount(&sysfs_fs_type); |
| 193 | if (IS_ERR(sysfs_mount)) { | 187 | if (IS_ERR(sysfs_mnt)) { |
| 194 | printk(KERN_ERR "sysfs: could not mount!\n"); | 188 | printk(KERN_ERR "sysfs: could not mount!\n"); |
| 195 | err = PTR_ERR(sysfs_mount); | 189 | err = PTR_ERR(sysfs_mnt); |
| 196 | sysfs_mount = NULL; | 190 | sysfs_mnt = NULL; |
| 197 | unregister_filesystem(&sysfs_fs_type); | 191 | unregister_filesystem(&sysfs_fs_type); |
| 198 | goto out_err; | 192 | goto out_err; |
| 199 | } | 193 | } |
