149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/file.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/fsnotify_backend.h>
|
|
#include <linux/idr.h>
|
|
#include <linux/init.h>
|
|
#include <linux/inotify.h>
|
|
#include <linux/fanotify.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/namei.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/types.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/exportfs.h>
|
|
|
|
#include "inotify/inotify.h"
|
|
#include "fanotify/fanotify.h"
|
|
#include "fdinfo.h"
|
|
#include "fsnotify.h"
|
|
|
|
#if defined(CONFIG_PROC_FS)
|
|
|
|
#if defined(CONFIG_INOTIFY_USER) || defined(CONFIG_FANOTIFY)
|
|
|
|
static void show_fdinfo(struct seq_file *m, struct file *f,
|
|
void (*show)(struct seq_file *m,
|
|
struct fsnotify_mark *mark))
|
|
{
|
|
struct fsnotify_group *group = f->private_data;
|
|
struct fsnotify_mark *mark;
|
|
|
|
fsnotify_group_lock(group);
|
|
list_for_each_entry(mark, &group->marks_list, g_list) {
|
|
show(m, mark);
|
|
if (seq_has_overflowed(m))
|
|
break;
|
|
}
|
|
fsnotify_group_unlock(group);
|
|
}
|
|
|
|
#if defined(CONFIG_EXPORTFS)
|
|
static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
|
|
{
|
|
struct {
|
|
struct file_handle handle;
|
|
u8 pad[MAX_HANDLE_SZ];
|
|
} f;
|
|
int size, ret, i;
|
|
|
|
f.handle.handle_bytes = sizeof(f.pad);
|
|
size = f.handle.handle_bytes >> 2;
|
|
|
|
ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, NULL);
|
|
if ((ret == FILEID_INVALID) || (ret < 0)) {
|
|
WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
|
|
return;
|
|
}
|
|
|
|
f.handle.handle_type = ret;
|
|
f.handle.handle_bytes = size * sizeof(u32);
|
|
|
|
seq_printf(m, "fhandle-bytes:%x fhandle-type:%x f_handle:",
|
|
f.handle.handle_bytes, f.handle.handle_type);
|
|
|
|
for (i = 0; i < f.handle.handle_bytes; i++)
|
|
seq_printf(m, "%02x", (int)f.handle.f_handle[i]);
|
|
}
|
|
#else
|
|
static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_INOTIFY_USER
|
|
|
|
static void inotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
|
|
{
|
|
struct inotify_inode_mark *inode_mark;
|
|
struct inode *inode;
|
|
|
|
if (mark->connector->type != FSNOTIFY_OBJ_TYPE_INODE)
|
|
return;
|
|
|
|
inode_mark = container_of(mark, struct inotify_inode_mark, fsn_mark);
|
|
inode = igrab(fsnotify_conn_inode(mark->connector));
|
|
if (inode) {
|
|
seq_printf(m, "inotify wd:%x ino:%lx sdev:%x mask:%x ignored_mask:0 ",
|
|
inode_mark->wd, inode->i_ino, inode->i_sb->s_dev,
|
|
inotify_mark_user_mask(mark));
|
|
show_mark_fhandle(m, inode);
|
|
seq_putc(m, '\n');
|
|
iput(inode);
|
|
}
|
|
}
|
|
|
|
void inotify_show_fdinfo(struct seq_file *m, struct file *f)
|
|
{
|
|
show_fdinfo(m, f, inotify_fdinfo);
|
|
}
|
|
|
|
#endif /* CONFIG_INOTIFY_USER */
|
|
|
|
#ifdef CONFIG_FANOTIFY
|
|
|
|
static void fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
|
|
{
|
|
unsigned int mflags = fanotify_mark_user_flags(mark);
|
|
struct inode *inode;
|
|
|
|
if (mark->connector->type == FSNOTIFY_OBJ_TYPE_INODE) {
|
|
inode = igrab(fsnotify_conn_inode(mark->connector));
|
|
if (!inode)
|
|
return;
|
|
seq_printf(m, "fanotify ino:%lx sdev:%x mflags:%x mask:%x ignored_mask:%x ",
|
|
inode->i_ino, inode->i_sb->s_dev,
|
|
mflags, mark->mask, mark->ignore_mask);
|
|
show_mark_fhandle(m, inode);
|
|
seq_putc(m, '\n');
|
|
iput(inode);
|
|
} else if (mark->connector->type == FSNOTIFY_OBJ_TYPE_VFSMOUNT) {
|
|
struct mount *mnt = fsnotify_conn_mount(mark->connector);
|
|
|
|
seq_printf(m, "fanotify mnt_id:%x mflags:%x mask:%x ignored_mask:%x\n",
|
|
mnt->mnt_id, mflags, mark->mask, mark->ignore_mask);
|
|
} else if (mark->connector->type == FSNOTIFY_OBJ_TYPE_SB) {
|
|
struct super_block *sb = fsnotify_conn_sb(mark->connector);
|
|
|
|
seq_printf(m, "fanotify sdev:%x mflags:%x mask:%x ignored_mask:%x\n",
|
|
sb->s_dev, mflags, mark->mask, mark->ignore_mask);
|
|
}
|
|
}
|
|
|
|
void fanotify_show_fdinfo(struct seq_file *m, struct file *f)
|
|
{
|
|
struct fsnotify_group *group = f->private_data;
|
|
|
|
seq_printf(m, "fanotify flags:%x event-flags:%x\n",
|
|
group->fanotify_data.flags & FANOTIFY_INIT_FLAGS,
|
|
group->fanotify_data.f_flags);
|
|
|
|
show_fdinfo(m, f, fanotify_fdinfo);
|
|
}
|
|
|
|
#endif /* CONFIG_FANOTIFY */
|
|
|
|
#endif /* CONFIG_INOTIFY_USER || CONFIG_FANOTIFY */
|
|
|
|
#endif /* CONFIG_PROC_FS */
|