Files
little_penguin/09/rw.c

42 lines
850 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/nsproxy.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <../fs/mount.h>
int list_mounts(struct seq_file *m, void *v);
int list_mounts(struct seq_file *m, void *v)
{
struct rb_node *cur;
struct mount *mnt;
char *buf;
char *path;
cur = current->nsproxy->mnt_ns->mnt_first_node;
buf = kmalloc(sizeof(char) * PATH_MAX, GFP_KERNEL);
while (cur) {
mnt = rb_entry(cur, struct mount, mnt_node);
struct path p = {
.mnt = &mnt->mnt,
.dentry = mnt->mnt.mnt_root,
};
path = d_path(&p, buf, PATH_MAX);
if (IS_ERR(path))
path = 0;
seq_printf(m, "%-10s %s\n", mnt->mnt_devname, path);
cur = rb_next(cur);
}
kfree(buf);
return 0;
}