1 #include <linux/file.h>
3 #include <linux/fsnotify_backend.h>
5 #include <linux/init.h>
6 #include <linux/inotify.h>
7 #include <linux/fanotify.h>
8 #include <linux/kernel.h>
9 #include <linux/namei.h>
10 #include <linux/sched.h>
11 #include <linux/types.h>
12 #include <linux/seq_file.h>
13 #include <linux/proc_fs.h>
14 #include <linux/exportfs.h>
16 #include "inotify/inotify.h"
17 #include "../fs/mount.h"
19 #if defined(CONFIG_PROC_FS)
21 #if defined(CONFIG_INOTIFY_USER) || defined(CONFIG_FANOTIFY)
23 static void show_fdinfo(struct seq_file *m, struct file *f,
24 void (*show)(struct seq_file *m,
25 struct fsnotify_mark *mark))
27 struct fsnotify_group *group = f->private_data;
28 struct fsnotify_mark *mark;
30 mutex_lock(&group->mark_mutex);
31 list_for_each_entry(mark, &group->marks_list, g_list) {
33 if (seq_has_overflowed(m))
36 mutex_unlock(&group->mark_mutex);
39 #if defined(CONFIG_EXPORTFS)
40 static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
43 struct file_handle handle;
44 u8 pad[MAX_HANDLE_SZ];
48 f.handle.handle_bytes = sizeof(f.pad);
49 size = f.handle.handle_bytes >> 2;
51 ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, 0);
52 if ((ret == FILEID_INVALID) || (ret < 0)) {
53 WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
57 f.handle.handle_type = ret;
58 f.handle.handle_bytes = size * sizeof(u32);
60 seq_printf(m, "fhandle-bytes:%x fhandle-type:%x f_handle:",
61 f.handle.handle_bytes, f.handle.handle_type);
63 for (i = 0; i < f.handle.handle_bytes; i++)
64 seq_printf(m, "%02x", (int)f.handle.f_handle[i]);
67 static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
72 #ifdef CONFIG_INOTIFY_USER
74 static void inotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
76 struct inotify_inode_mark *inode_mark;
79 if (!(mark->flags & (FSNOTIFY_MARK_FLAG_ALIVE | FSNOTIFY_MARK_FLAG_INODE)))
82 inode_mark = container_of(mark, struct inotify_inode_mark, fsn_mark);
83 inode = igrab(mark->inode);
85 seq_printf(m, "inotify wd:%x ino:%lx sdev:%x mask:%x ignored_mask:%x ",
86 inode_mark->wd, inode->i_ino, inode->i_sb->s_dev,
87 mark->mask, mark->ignored_mask);
88 show_mark_fhandle(m, inode);
94 void inotify_show_fdinfo(struct seq_file *m, struct file *f)
96 show_fdinfo(m, f, inotify_fdinfo);
99 #endif /* CONFIG_INOTIFY_USER */
101 #ifdef CONFIG_FANOTIFY
103 static void fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
105 unsigned int mflags = 0;
108 if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE))
111 if (mark->flags & FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY)
112 mflags |= FAN_MARK_IGNORED_SURV_MODIFY;
114 if (mark->flags & FSNOTIFY_MARK_FLAG_INODE) {
115 inode = igrab(mark->inode);
118 seq_printf(m, "fanotify ino:%lx sdev:%x mflags:%x mask:%x ignored_mask:%x ",
119 inode->i_ino, inode->i_sb->s_dev,
120 mflags, mark->mask, mark->ignored_mask);
121 show_mark_fhandle(m, inode);
124 } else if (mark->flags & FSNOTIFY_MARK_FLAG_VFSMOUNT) {
125 struct mount *mnt = real_mount(mark->mnt);
127 seq_printf(m, "fanotify mnt_id:%x mflags:%x mask:%x ignored_mask:%x\n",
128 mnt->mnt_id, mflags, mark->mask, mark->ignored_mask);
132 void fanotify_show_fdinfo(struct seq_file *m, struct file *f)
134 struct fsnotify_group *group = f->private_data;
135 unsigned int flags = 0;
137 switch (group->priority) {
139 flags |= FAN_CLASS_NOTIF;
142 flags |= FAN_CLASS_CONTENT;
145 flags |= FAN_CLASS_PRE_CONTENT;
149 if (group->max_events == UINT_MAX)
150 flags |= FAN_UNLIMITED_QUEUE;
152 if (group->fanotify_data.max_marks == UINT_MAX)
153 flags |= FAN_UNLIMITED_MARKS;
155 seq_printf(m, "fanotify flags:%x event-flags:%x\n",
156 flags, group->fanotify_data.f_flags);
158 show_fdinfo(m, f, fanotify_fdinfo);
161 #endif /* CONFIG_FANOTIFY */
163 #endif /* CONFIG_INOTIFY_USER || CONFIG_FANOTIFY */
165 #endif /* CONFIG_PROC_FS */