projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3e519038 TH |
1 | struct sysfs_elem_dir { |
| 2 | struct kobject * kobj; | |
| 3 | }; | |
| 4 | ||
| 5 | struct sysfs_elem_symlink { | |
| 2b29ac25 | 6 | struct sysfs_dirent * target_sd; |
| 3e519038 TH |
7 | }; |
| 8 | ||
| 9 | struct sysfs_elem_attr { | |
| 10 | struct attribute * attr; | |
| 11 | }; | |
| 12 | ||
| 13 | struct sysfs_elem_bin_attr { | |
| 14 | struct bin_attribute * bin_attr; | |
| 15 | }; | |
| 16 | ||
| 0ab66088 TH |
17 | /* |
| 18 | * As long as s_count reference is held, the sysfs_dirent itself is | |
| 19 | * accessible. Dereferencing s_elem or any other outer entity | |
| 20 | * requires s_active reference. | |
| 21 | */ | |
| d56c3eae AR |
22 | struct sysfs_dirent { |
| 23 | atomic_t s_count; | |
| 8619f979 | 24 | atomic_t s_active; |
| 13b3086d | 25 | struct sysfs_dirent * s_parent; |
| 0c73f18b TH |
26 | struct sysfs_dirent * s_sibling; |
| 27 | struct sysfs_dirent * s_children; | |
| 0c096b50 | 28 | const char * s_name; |
| 3e519038 TH |
29 | |
| 30 | union { | |
| 31 | struct sysfs_elem_dir dir; | |
| 32 | struct sysfs_elem_symlink symlink; | |
| 33 | struct sysfs_elem_attr attr; | |
| 34 | struct sysfs_elem_bin_attr bin_attr; | |
| 35 | } s_elem; | |
| 36 | ||
| b402d72c | 37 | unsigned int s_flags; |
| d56c3eae | 38 | umode_t s_mode; |
| dc351252 | 39 | ino_t s_ino; |
| d56c3eae AR |
40 | struct dentry * s_dentry; |
| 41 | struct iattr * s_iattr; | |
| 42 | atomic_t s_event; | |
| 43 | }; | |
| 1da177e4 | 44 | |
| 8619f979 | 45 | #define SD_DEACTIVATED_BIAS INT_MIN |
| 0ab66088 | 46 | |
| fb6896da TH |
47 | struct sysfs_addrm_cxt { |
| 48 | struct sysfs_dirent *parent_sd; | |
| 49 | struct inode *parent_inode; | |
| 50 | struct sysfs_dirent *removed; | |
| 51 | int cnt; | |
| 52 | }; | |
| 53 | ||
| 1da177e4 | 54 | extern struct vfsmount * sysfs_mount; |
| 51225039 | 55 | extern struct sysfs_dirent sysfs_root; |
| e18b890b | 56 | extern struct kmem_cache *sysfs_dir_cachep; |
| 1da177e4 | 57 | |
| 53e0ae92 | 58 | extern struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd); |
| fb6896da TH |
59 | extern void sysfs_link_sibling(struct sysfs_dirent *sd); |
| 60 | extern void sysfs_unlink_sibling(struct sysfs_dirent *sd); | |
| b6b4a439 TH |
61 | extern struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd); |
| 62 | extern void sysfs_put_active(struct sysfs_dirent *sd); | |
| 63 | extern struct sysfs_dirent *sysfs_get_active_two(struct sysfs_dirent *sd); | |
| 64 | extern void sysfs_put_active_two(struct sysfs_dirent *sd); | |
| fb6896da TH |
65 | extern void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt, |
| 66 | struct sysfs_dirent *parent_sd); | |
| 67 | extern void sysfs_add_one(struct sysfs_addrm_cxt *acxt, | |
| 68 | struct sysfs_dirent *sd); | |
| 69 | extern void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, | |
| 70 | struct sysfs_dirent *sd); | |
| 71 | extern int sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt); | |
| b6b4a439 | 72 | |
| b592fcfe | 73 | extern void sysfs_delete_inode(struct inode *inode); |
| fc9f54b9 | 74 | extern void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode); |
| 8312a8d7 | 75 | extern struct inode * sysfs_get_inode(struct sysfs_dirent *sd); |
| fc9f54b9 | 76 | extern void sysfs_instantiate(struct dentry *dentry, struct inode *inode); |
| 1da177e4 | 77 | |
| fa7f912a | 78 | extern void release_sysfs_dirent(struct sysfs_dirent * sd); |
| f0b0af47 TH |
79 | extern struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, |
| 80 | const unsigned char *name); | |
| 81 | extern struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, | |
| 82 | const unsigned char *name); | |
| 3e519038 TH |
83 | extern struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, |
| 84 | int type); | |
| 1da177e4 | 85 | |
| 608e266a TH |
86 | extern int sysfs_add_file(struct sysfs_dirent *dir_sd, |
| 87 | const struct attribute *attr, int type); | |
| 88 | extern int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name); | |
| 4508a7a7 | 89 | extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name); |
| 1da177e4 | 90 | |
| 608e266a TH |
91 | extern int sysfs_create_subdir(struct kobject *kobj, const char *name, |
| 92 | struct sysfs_dirent **p_sd); | |
| 93 | extern void sysfs_remove_subdir(struct sysfs_dirent *sd); | |
| 1da177e4 | 94 | |
| 988d186d | 95 | extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); |
| 1da177e4 | 96 | |
| 5f995323 | 97 | extern spinlock_t sysfs_assoc_lock; |
| 3007e997 | 98 | extern struct mutex sysfs_mutex; |
| 1da177e4 | 99 | extern struct super_block * sysfs_sb; |
| 4b6f5d20 AV |
100 | extern const struct file_operations sysfs_dir_operations; |
| 101 | extern const struct file_operations sysfs_file_operations; | |
| 102 | extern const struct file_operations bin_fops; | |
| c5ef1c42 AV |
103 | extern const struct inode_operations sysfs_dir_inode_operations; |
| 104 | extern const struct inode_operations sysfs_symlink_inode_operations; | |
| 1da177e4 | 105 | |
| b402d72c TH |
106 | static inline unsigned int sysfs_type(struct sysfs_dirent *sd) |
| 107 | { | |
| 108 | return sd->s_flags & SYSFS_TYPE_MASK; | |
| 109 | } | |
| 110 | ||
| 0ab66088 | 111 | static inline struct sysfs_dirent * sysfs_get(struct sysfs_dirent * sd) |
| 1da177e4 | 112 | { |
| 0ab66088 TH |
113 | if (sd) { |
| 114 | WARN_ON(!atomic_read(&sd->s_count)); | |
| 115 | atomic_inc(&sd->s_count); | |
| 116 | } | |
| 117 | return sd; | |
| 1da177e4 LT |
118 | } |
| 119 | ||
| 0ab66088 | 120 | static inline void sysfs_put(struct sysfs_dirent * sd) |
| 1da177e4 | 121 | { |
| 0ab66088 TH |
122 | if (sd && atomic_dec_and_test(&sd->s_count)) |
| 123 | release_sysfs_dirent(sd); | |
| 124 | } | |
| 2b29ac25 | 125 | |
| b592fcfe EB |
126 | static inline int sysfs_is_shadowed_inode(struct inode *inode) |
| 127 | { | |
| 128 | return S_ISDIR(inode->i_mode) && inode->i_op->follow_link; | |
| 129 | } |