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223 lines
8.3 KiB
223 lines
8.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* The proc filesystem constants/structures |
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*/ |
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#ifndef _LINUX_PROC_FS_H |
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#define _LINUX_PROC_FS_H |
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#include <linux/compiler.h> |
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#include <linux/types.h> |
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#include <linux/fs.h> |
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struct proc_dir_entry; |
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struct seq_file; |
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struct seq_operations; |
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enum { |
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/* |
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* All /proc entries using this ->proc_ops instance are never removed. |
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* |
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* If in doubt, ignore this flag. |
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*/ |
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#ifdef MODULE |
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PROC_ENTRY_PERMANENT = 0U, |
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#else |
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PROC_ENTRY_PERMANENT = 1U << 0, |
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#endif |
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}; |
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struct proc_ops { |
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unsigned int proc_flags; |
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int (*proc_open)(struct inode *, struct file *); |
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ssize_t (*proc_read)(struct file *, char __user *, size_t, loff_t *); |
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ssize_t (*proc_read_iter)(struct kiocb *, struct iov_iter *); |
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ssize_t (*proc_write)(struct file *, const char __user *, size_t, loff_t *); |
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loff_t (*proc_lseek)(struct file *, loff_t, int); |
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int (*proc_release)(struct inode *, struct file *); |
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__poll_t (*proc_poll)(struct file *, struct poll_table_struct *); |
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long (*proc_ioctl)(struct file *, unsigned int, unsigned long); |
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#ifdef CONFIG_COMPAT |
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long (*proc_compat_ioctl)(struct file *, unsigned int, unsigned long); |
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#endif |
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int (*proc_mmap)(struct file *, struct vm_area_struct *); |
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unsigned long (*proc_get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); |
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} __randomize_layout; |
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/* definitions for hide_pid field */ |
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enum proc_hidepid { |
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HIDEPID_OFF = 0, |
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HIDEPID_NO_ACCESS = 1, |
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HIDEPID_INVISIBLE = 2, |
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HIDEPID_NOT_PTRACEABLE = 4, /* Limit pids to only ptraceable pids */ |
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}; |
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/* definitions for proc mount option pidonly */ |
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enum proc_pidonly { |
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PROC_PIDONLY_OFF = 0, |
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PROC_PIDONLY_ON = 1, |
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}; |
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struct proc_fs_info { |
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struct pid_namespace *pid_ns; |
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struct dentry *proc_self; /* For /proc/self */ |
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struct dentry *proc_thread_self; /* For /proc/thread-self */ |
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kgid_t pid_gid; |
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enum proc_hidepid hide_pid; |
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enum proc_pidonly pidonly; |
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}; |
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static inline struct proc_fs_info *proc_sb_info(struct super_block *sb) |
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{ |
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return sb->s_fs_info; |
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} |
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#ifdef CONFIG_PROC_FS |
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typedef int (*proc_write_t)(struct file *, char *, size_t); |
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extern void proc_root_init(void); |
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extern void proc_flush_pid(struct pid *); |
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extern struct proc_dir_entry *proc_symlink(const char *, |
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struct proc_dir_entry *, const char *); |
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struct proc_dir_entry *_proc_mkdir(const char *, umode_t, struct proc_dir_entry *, void *, bool); |
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extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *); |
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extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t, |
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struct proc_dir_entry *, void *); |
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extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t, |
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struct proc_dir_entry *); |
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struct proc_dir_entry *proc_create_mount_point(const char *name); |
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struct proc_dir_entry *proc_create_seq_private(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, const struct seq_operations *ops, |
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unsigned int state_size, void *data); |
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#define proc_create_seq_data(name, mode, parent, ops, data) \ |
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proc_create_seq_private(name, mode, parent, ops, 0, data) |
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#define proc_create_seq(name, mode, parent, ops) \ |
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proc_create_seq_private(name, mode, parent, ops, 0, NULL) |
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struct proc_dir_entry *proc_create_single_data(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, |
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int (*show)(struct seq_file *, void *), void *data); |
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#define proc_create_single(name, mode, parent, show) \ |
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proc_create_single_data(name, mode, parent, show, NULL) |
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extern struct proc_dir_entry *proc_create_data(const char *, umode_t, |
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struct proc_dir_entry *, |
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const struct proc_ops *, |
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void *); |
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struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops); |
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extern void proc_set_size(struct proc_dir_entry *, loff_t); |
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extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t); |
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extern void *PDE_DATA(const struct inode *); |
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extern void *proc_get_parent_data(const struct inode *); |
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extern void proc_remove(struct proc_dir_entry *); |
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extern void remove_proc_entry(const char *, struct proc_dir_entry *); |
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extern int remove_proc_subtree(const char *, struct proc_dir_entry *); |
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struct proc_dir_entry *proc_create_net_data(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, const struct seq_operations *ops, |
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unsigned int state_size, void *data); |
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#define proc_create_net(name, mode, parent, ops, state_size) \ |
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proc_create_net_data(name, mode, parent, ops, state_size, NULL) |
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struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, |
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int (*show)(struct seq_file *, void *), void *data); |
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struct proc_dir_entry *proc_create_net_data_write(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, |
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const struct seq_operations *ops, |
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proc_write_t write, |
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unsigned int state_size, void *data); |
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struct proc_dir_entry *proc_create_net_single_write(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, |
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int (*show)(struct seq_file *, void *), |
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proc_write_t write, |
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void *data); |
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extern struct pid *tgid_pidfd_to_pid(const struct file *file); |
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struct bpf_iter_aux_info; |
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extern int bpf_iter_init_seq_net(void *priv_data, struct bpf_iter_aux_info *aux); |
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extern void bpf_iter_fini_seq_net(void *priv_data); |
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#ifdef CONFIG_PROC_PID_ARCH_STATUS |
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/* |
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* The architecture which selects CONFIG_PROC_PID_ARCH_STATUS must |
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* provide proc_pid_arch_status() definition. |
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*/ |
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int proc_pid_arch_status(struct seq_file *m, struct pid_namespace *ns, |
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struct pid *pid, struct task_struct *task); |
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#endif /* CONFIG_PROC_PID_ARCH_STATUS */ |
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#else /* CONFIG_PROC_FS */ |
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static inline void proc_root_init(void) |
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{ |
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} |
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static inline void proc_flush_pid(struct pid *pid) |
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{ |
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} |
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static inline struct proc_dir_entry *proc_symlink(const char *name, |
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struct proc_dir_entry *parent,const char *dest) { return NULL;} |
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static inline struct proc_dir_entry *proc_mkdir(const char *name, |
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struct proc_dir_entry *parent) {return NULL;} |
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static inline struct proc_dir_entry *proc_create_mount_point(const char *name) { return NULL; } |
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static inline struct proc_dir_entry *_proc_mkdir(const char *name, umode_t mode, |
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struct proc_dir_entry *parent, void *data, bool force_lookup) |
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{ |
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return NULL; |
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} |
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static inline struct proc_dir_entry *proc_mkdir_data(const char *name, |
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umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; } |
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static inline struct proc_dir_entry *proc_mkdir_mode(const char *name, |
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umode_t mode, struct proc_dir_entry *parent) { return NULL; } |
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#define proc_create_seq_private(name, mode, parent, ops, size, data) ({NULL;}) |
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#define proc_create_seq_data(name, mode, parent, ops, data) ({NULL;}) |
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#define proc_create_seq(name, mode, parent, ops) ({NULL;}) |
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#define proc_create_single(name, mode, parent, show) ({NULL;}) |
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#define proc_create_single_data(name, mode, parent, show, data) ({NULL;}) |
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#define proc_create(name, mode, parent, proc_ops) ({NULL;}) |
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#define proc_create_data(name, mode, parent, proc_ops, data) ({NULL;}) |
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static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {} |
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static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {} |
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static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;} |
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static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; } |
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static inline void proc_remove(struct proc_dir_entry *de) {} |
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#define remove_proc_entry(name, parent) do {} while (0) |
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static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; } |
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#define proc_create_net_data(name, mode, parent, ops, state_size, data) ({NULL;}) |
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#define proc_create_net(name, mode, parent, state_size, ops) ({NULL;}) |
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#define proc_create_net_single(name, mode, parent, show, data) ({NULL;}) |
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static inline struct pid *tgid_pidfd_to_pid(const struct file *file) |
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{ |
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return ERR_PTR(-EBADF); |
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} |
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#endif /* CONFIG_PROC_FS */ |
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struct net; |
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static inline struct proc_dir_entry *proc_net_mkdir( |
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struct net *net, const char *name, struct proc_dir_entry *parent) |
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{ |
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return _proc_mkdir(name, 0, parent, net, true); |
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} |
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struct ns_common; |
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int open_related_ns(struct ns_common *ns, |
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struct ns_common *(*get_ns)(struct ns_common *ns)); |
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/* get the associated pid namespace for a file in procfs */ |
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static inline struct pid_namespace *proc_pid_ns(struct super_block *sb) |
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{ |
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return proc_sb_info(sb)->pid_ns; |
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} |
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bool proc_ns_file(const struct file *file); |
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#endif /* _LINUX_PROC_FS_H */
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