Tejun Heo | 6d66f5c | 2007-09-20 17:31:38 +0900 | [diff] [blame] | 1 | /* |
| 2 | * fs/sysfs/sysfs.h - sysfs internal header file |
| 3 | * |
| 4 | * Copyright (c) 2001-3 Patrick Mochel |
| 5 | * Copyright (c) 2007 SUSE Linux Products GmbH |
| 6 | * Copyright (c) 2007 Tejun Heo <teheo@suse.de> |
| 7 | * |
| 8 | * This file is released under the GPLv2. |
| 9 | */ |
| 10 | |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 11 | #include <linux/lockdep.h> |
Alexey Dobriyan | 57cc721 | 2011-01-10 08:18:25 +0200 | [diff] [blame] | 12 | #include <linux/kobject_ns.h> |
David P. Quigley | ddd29ec | 2009-09-09 14:25:37 -0400 | [diff] [blame] | 13 | #include <linux/fs.h> |
Mikulas Patocka | 4f72c0c | 2011-07-25 17:55:57 -0400 | [diff] [blame] | 14 | #include <linux/rbtree.h> |
David P. Quigley | ddd29ec | 2009-09-09 14:25:37 -0400 | [diff] [blame] | 15 | |
Tejun Heo | 85a4ffa | 2007-09-20 16:05:12 +0900 | [diff] [blame] | 16 | struct sysfs_open_dirent; |
| 17 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 18 | /* type-specific structures for sysfs_dirent->s_* union members */ |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 19 | struct sysfs_elem_dir { |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 20 | struct kobject *kobj; |
Mikulas Patocka | 7f9838f | 2011-07-21 19:59:22 -0400 | [diff] [blame] | 21 | |
Greg Kroah-Hartman | 54d20f0 | 2012-03-08 13:03:10 -0800 | [diff] [blame] | 22 | unsigned long subdirs; |
Eric W. Biederman | 4e4d6d8 | 2011-12-18 20:05:43 -0800 | [diff] [blame] | 23 | /* children rbtree starts here and goes through sd->s_rb */ |
| 24 | struct rb_root children; |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 25 | }; |
| 26 | |
| 27 | struct sysfs_elem_symlink { |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 28 | struct sysfs_dirent *target_sd; |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 29 | }; |
| 30 | |
| 31 | struct sysfs_elem_attr { |
Tejun Heo | 56b3f3b | 2013-10-24 11:49:07 -0400 | [diff] [blame] | 32 | union { |
| 33 | struct attribute *attr; |
| 34 | struct bin_attribute *bin_attr; |
| 35 | }; |
Tejun Heo | 85a4ffa | 2007-09-20 16:05:12 +0900 | [diff] [blame] | 36 | struct sysfs_open_dirent *open; |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 37 | }; |
| 38 | |
David P. Quigley | ddd29ec | 2009-09-09 14:25:37 -0400 | [diff] [blame] | 39 | struct sysfs_inode_attrs { |
| 40 | struct iattr ia_iattr; |
| 41 | void *ia_secdata; |
| 42 | u32 ia_secdata_len; |
| 43 | }; |
| 44 | |
Tejun Heo | 0ab6608 | 2007-06-14 03:45:16 +0900 | [diff] [blame] | 45 | /* |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 46 | * sysfs_dirent - the building block of sysfs hierarchy. Each and |
| 47 | * every sysfs node is represented by single sysfs_dirent. |
| 48 | * |
Tejun Heo | 0ab6608 | 2007-06-14 03:45:16 +0900 | [diff] [blame] | 49 | * As long as s_count reference is held, the sysfs_dirent itself is |
| 50 | * accessible. Dereferencing s_elem or any other outer entity |
| 51 | * requires s_active reference. |
| 52 | */ |
Adam J. Richter | d56c3ea | 2007-02-16 21:35:25 +0800 | [diff] [blame] | 53 | struct sysfs_dirent { |
| 54 | atomic_t s_count; |
Tejun Heo | 8619f97 | 2007-06-14 03:45:18 +0900 | [diff] [blame] | 55 | atomic_t s_active; |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 56 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 57 | struct lockdep_map dep_map; |
| 58 | #endif |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 59 | struct sysfs_dirent *s_parent; |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 60 | const char *s_name; |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 61 | |
Eric W. Biederman | 4e4d6d8 | 2011-12-18 20:05:43 -0800 | [diff] [blame] | 62 | struct rb_node s_rb; |
Mikulas Patocka | 4f72c0c | 2011-07-25 17:55:57 -0400 | [diff] [blame] | 63 | |
Mikulas Patocka | 58f2a4c | 2011-07-21 20:01:12 -0400 | [diff] [blame] | 64 | union { |
| 65 | struct completion *completion; |
| 66 | struct sysfs_dirent *removed_list; |
| 67 | } u; |
| 68 | |
Serge E. Hallyn | be867b1 | 2010-05-03 16:23:15 -0500 | [diff] [blame] | 69 | const void *s_ns; /* namespace tag */ |
Eric W. Biederman | 4e4d6d8 | 2011-12-18 20:05:43 -0800 | [diff] [blame] | 70 | unsigned int s_hash; /* ns + name hash */ |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 71 | union { |
Tejun Heo | b1fc3d6 | 2007-09-20 16:05:11 +0900 | [diff] [blame] | 72 | struct sysfs_elem_dir s_dir; |
| 73 | struct sysfs_elem_symlink s_symlink; |
| 74 | struct sysfs_elem_attr s_attr; |
Tejun Heo | b1fc3d6 | 2007-09-20 16:05:11 +0900 | [diff] [blame] | 75 | }; |
Tejun Heo | 3e51903 | 2007-06-14 03:45:15 +0900 | [diff] [blame] | 76 | |
Eric W. Biederman | 15a3382 | 2011-12-18 20:07:23 -0800 | [diff] [blame] | 77 | unsigned short s_flags; |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 78 | umode_t s_mode; |
Eric W. Biederman | cafa6b5 | 2011-12-18 20:08:16 -0800 | [diff] [blame] | 79 | unsigned int s_ino; |
David P. Quigley | ddd29ec | 2009-09-09 14:25:37 -0400 | [diff] [blame] | 80 | struct sysfs_inode_attrs *s_iattr; |
Adam J. Richter | d56c3ea | 2007-02-16 21:35:25 +0800 | [diff] [blame] | 81 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 83 | #define SD_DEACTIVATED_BIAS INT_MIN |
Tejun Heo | 0ab6608 | 2007-06-14 03:45:16 +0900 | [diff] [blame] | 84 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 85 | #define SYSFS_TYPE_MASK 0x00ff |
Tejun Heo | dc2f75f | 2007-09-20 16:05:12 +0900 | [diff] [blame] | 86 | #define SYSFS_DIR 0x0001 |
| 87 | #define SYSFS_KOBJ_ATTR 0x0002 |
| 88 | #define SYSFS_KOBJ_BIN_ATTR 0x0004 |
| 89 | #define SYSFS_KOBJ_LINK 0x0008 |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 90 | #define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK) |
Eric W. Biederman | a2db684 | 2010-02-11 15:20:00 -0800 | [diff] [blame] | 91 | #define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR) |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 92 | |
Tejun Heo | cb26a31 | 2013-09-11 22:29:07 -0400 | [diff] [blame] | 93 | #define SYSFS_FLAG_MASK ~SYSFS_TYPE_MASK |
| 94 | #define SYSFS_FLAG_HAS_NS 0x01000 |
Eric W. Biederman | 15a3382 | 2011-12-18 20:07:23 -0800 | [diff] [blame] | 95 | #define SYSFS_FLAG_REMOVED 0x02000 |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 96 | |
| 97 | static inline unsigned int sysfs_type(struct sysfs_dirent *sd) |
| 98 | { |
| 99 | return sd->s_flags & SYSFS_TYPE_MASK; |
| 100 | } |
| 101 | |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 102 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
Tejun Heo | 785a162 | 2013-10-14 09:27:11 -0400 | [diff] [blame] | 103 | |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 104 | #define sysfs_dirent_init_lockdep(sd) \ |
| 105 | do { \ |
Eric W. Biederman | 6992f53 | 2010-02-11 15:21:53 -0800 | [diff] [blame] | 106 | struct attribute *attr = sd->s_attr.attr; \ |
| 107 | struct lock_class_key *key = attr->key; \ |
| 108 | if (!key) \ |
| 109 | key = &attr->skey; \ |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 110 | \ |
Eric W. Biederman | 6992f53 | 2010-02-11 15:21:53 -0800 | [diff] [blame] | 111 | lockdep_init_map(&sd->dep_map, "s_active", key, 0); \ |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 112 | } while (0) |
Tejun Heo | 785a162 | 2013-10-14 09:27:11 -0400 | [diff] [blame] | 113 | |
| 114 | /* Test for attributes that want to ignore lockdep for read-locking */ |
| 115 | static inline bool sysfs_ignore_lockdep(struct sysfs_dirent *sd) |
| 116 | { |
Tejun Heo | 672f76a | 2013-10-24 11:49:08 -0400 | [diff] [blame] | 117 | int type = sysfs_type(sd); |
| 118 | |
| 119 | return (type == SYSFS_KOBJ_ATTR || type == SYSFS_KOBJ_BIN_ATTR) && |
Tejun Heo | 785a162 | 2013-10-14 09:27:11 -0400 | [diff] [blame] | 120 | sd->s_attr.attr->ignore_lockdep; |
| 121 | } |
| 122 | |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 123 | #else |
Tejun Heo | 785a162 | 2013-10-14 09:27:11 -0400 | [diff] [blame] | 124 | |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 125 | #define sysfs_dirent_init_lockdep(sd) do {} while (0) |
Tejun Heo | 785a162 | 2013-10-14 09:27:11 -0400 | [diff] [blame] | 126 | |
| 127 | static inline bool sysfs_ignore_lockdep(struct sysfs_dirent *sd) |
| 128 | { |
| 129 | return true; |
| 130 | } |
| 131 | |
Eric W. Biederman | 846f997 | 2010-01-02 13:37:12 -0800 | [diff] [blame] | 132 | #endif |
| 133 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 134 | /* |
| 135 | * Context structure to be used while adding/removing nodes. |
| 136 | */ |
Tejun Heo | fb6896d | 2007-06-14 04:27:24 +0900 | [diff] [blame] | 137 | struct sysfs_addrm_cxt { |
Tejun Heo | fb6896d | 2007-06-14 04:27:24 +0900 | [diff] [blame] | 138 | struct sysfs_dirent *removed; |
Tejun Heo | fb6896d | 2007-06-14 04:27:24 +0900 | [diff] [blame] | 139 | }; |
| 140 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 141 | /* |
| 142 | * mount.c |
| 143 | */ |
Serge E. Hallyn | be867b1 | 2010-05-03 16:23:15 -0500 | [diff] [blame] | 144 | |
| 145 | /* |
Tejun Heo | cb26a31 | 2013-09-11 22:29:07 -0400 | [diff] [blame] | 146 | * Each sb is associated with one namespace tag, currently the network |
| 147 | * namespace of the task which mounted this sysfs instance. If multiple |
| 148 | * tags become necessary, make the following an array and compare |
| 149 | * sysfs_dirent tag against every entry. |
Serge E. Hallyn | be867b1 | 2010-05-03 16:23:15 -0500 | [diff] [blame] | 150 | */ |
Eric W. Biederman | 9e7fdd2 | 2010-03-30 11:31:24 -0700 | [diff] [blame] | 151 | struct sysfs_super_info { |
Tejun Heo | cb26a31 | 2013-09-11 22:29:07 -0400 | [diff] [blame] | 152 | void *ns; |
Eric W. Biederman | 9e7fdd2 | 2010-03-30 11:31:24 -0700 | [diff] [blame] | 153 | }; |
| 154 | #define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info)) |
Tejun Heo | 5122503 | 2007-06-14 04:27:25 +0900 | [diff] [blame] | 155 | extern struct sysfs_dirent sysfs_root; |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 156 | extern struct kmem_cache *sysfs_dir_cachep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 158 | /* |
| 159 | * dir.c |
| 160 | */ |
Tejun Heo | 3007e99 | 2007-06-14 04:27:23 +0900 | [diff] [blame] | 161 | extern struct mutex sysfs_mutex; |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 162 | extern spinlock_t sysfs_assoc_lock; |
Al Viro | 469796d | 2012-06-07 20:51:39 -0400 | [diff] [blame] | 163 | extern const struct dentry_operations sysfs_dentry_ops; |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 164 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 165 | extern const struct file_operations sysfs_dir_operations; |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 166 | extern const struct inode_operations sysfs_dir_inode_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
Eric W. Biederman | e72ceb8 | 2010-02-11 15:18:38 -0800 | [diff] [blame] | 168 | struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd); |
| 169 | void sysfs_put_active(struct sysfs_dirent *sd); |
Tejun Heo | d69ac5a | 2013-09-18 17:15:35 -0400 | [diff] [blame] | 170 | void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt); |
Tejun Heo | d1c1459 | 2013-10-24 11:49:11 -0400 | [diff] [blame^] | 171 | void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name); |
Tejun Heo | d69ac5a | 2013-09-18 17:15:35 -0400 | [diff] [blame] | 172 | int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, |
| 173 | struct sysfs_dirent *parent_sd); |
| 174 | int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, |
| 175 | struct sysfs_dirent *parent_sd); |
Tejun Heo | 250f7c3 | 2013-09-18 17:15:38 -0400 | [diff] [blame] | 176 | void sysfs_remove(struct sysfs_dirent *sd); |
Tejun Heo | 7eed6ec | 2013-10-24 11:49:10 -0400 | [diff] [blame] | 177 | int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name, |
| 178 | const void *ns); |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 179 | void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt); |
Tejun Heo | b402d72 | 2007-06-14 04:27:21 +0900 | [diff] [blame] | 180 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 181 | struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, |
Tejun Heo | cfec0bc | 2013-09-11 22:29:09 -0400 | [diff] [blame] | 182 | const unsigned char *name, |
| 183 | const void *ns); |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 184 | struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type); |
| 185 | |
| 186 | void release_sysfs_dirent(struct sysfs_dirent *sd); |
| 187 | |
| 188 | int sysfs_create_subdir(struct kobject *kobj, const char *name, |
| 189 | struct sysfs_dirent **p_sd); |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 190 | |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 191 | int sysfs_rename(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent_sd, |
Tejun Heo | cfec0bc | 2013-09-11 22:29:09 -0400 | [diff] [blame] | 192 | const char *new_name, const void *new_ns); |
Eric W. Biederman | ca1bab3 | 2009-11-20 16:08:57 -0800 | [diff] [blame] | 193 | |
Neil Brown | f1282c8 | 2008-07-16 08:58:04 +1000 | [diff] [blame] | 194 | static inline struct sysfs_dirent *__sysfs_get(struct sysfs_dirent *sd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | { |
| 196 | if (sd) { |
| 197 | WARN_ON(!atomic_read(&sd->s_count)); |
| 198 | atomic_inc(&sd->s_count); |
| 199 | } |
| 200 | return sd; |
| 201 | } |
Neil Brown | f1282c8 | 2008-07-16 08:58:04 +1000 | [diff] [blame] | 202 | #define sysfs_get(sd) __sysfs_get(sd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Neil Brown | f1282c8 | 2008-07-16 08:58:04 +1000 | [diff] [blame] | 204 | static inline void __sysfs_put(struct sysfs_dirent *sd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
Tejun Heo | 7a23ad4 | 2007-06-14 03:45:13 +0900 | [diff] [blame] | 206 | if (sd && atomic_dec_and_test(&sd->s_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | release_sysfs_dirent(sd); |
| 208 | } |
Neil Brown | f1282c8 | 2008-07-16 08:58:04 +1000 | [diff] [blame] | 209 | #define sysfs_put(sd) __sysfs_put(sd) |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 210 | |
| 211 | /* |
| 212 | * inode.c |
| 213 | */ |
Eric W. Biederman | fac2622 | 2010-02-12 19:22:27 -0800 | [diff] [blame] | 214 | struct inode *sysfs_get_inode(struct super_block *sb, struct sysfs_dirent *sd); |
Al Viro | 01cd9fe | 2010-06-04 22:21:54 -0400 | [diff] [blame] | 215 | void sysfs_evict_inode(struct inode *inode); |
Eric W. Biederman | 35df63c | 2009-11-20 16:08:50 -0800 | [diff] [blame] | 216 | int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr *iattr); |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 217 | int sysfs_permission(struct inode *inode, int mask); |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 218 | int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 219 | int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 220 | struct kstat *stat); |
David P. Quigley | ddd29ec | 2009-09-09 14:25:37 -0400 | [diff] [blame] | 221 | int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value, |
Greg Kroah-Hartman | 2c3a908 | 2013-08-21 16:40:05 -0700 | [diff] [blame] | 222 | size_t size, int flags); |
Peter Zijlstra | e0bf68d | 2007-10-16 23:25:46 -0700 | [diff] [blame] | 223 | int sysfs_inode_init(void); |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 224 | |
| 225 | /* |
| 226 | * file.c |
| 227 | */ |
| 228 | extern const struct file_operations sysfs_file_operations; |
Tejun Heo | f9b9a62 | 2013-10-01 17:42:05 -0400 | [diff] [blame] | 229 | extern const struct file_operations sysfs_bin_operations; |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 230 | |
| 231 | int sysfs_add_file(struct sysfs_dirent *dir_sd, |
| 232 | const struct attribute *attr, int type); |
| 233 | |
Tejun Heo | 58292cbe | 2013-09-11 22:29:04 -0400 | [diff] [blame] | 234 | int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, |
| 235 | const struct attribute *attr, int type, |
| 236 | umode_t amode, const void *ns); |
Tejun Heo | 73d9714 | 2013-10-01 17:42:07 -0400 | [diff] [blame] | 237 | void sysfs_unmap_bin_file(struct sysfs_dirent *sd); |
| 238 | |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 239 | /* |
Tejun Heo | 59f6901 | 2007-09-20 16:05:10 +0900 | [diff] [blame] | 240 | * symlink.c |
| 241 | */ |
| 242 | extern const struct inode_operations sysfs_symlink_inode_operations; |
Rafael J. Wysocki | 0bb8f3d | 2013-01-25 21:51:13 +0100 | [diff] [blame] | 243 | int sysfs_create_link_sd(struct sysfs_dirent *sd, struct kobject *target, |
| 244 | const char *name); |