Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexei Starovoitov |
127 |
38.48% |
1 |
5.00% |
| Taehee Yoo |
114 |
34.55% |
3 |
15.00% |
| Linus Torvalds (pre-git) |
32 |
9.70% |
3 |
15.00% |
| Eric W. Biedermann |
25 |
7.58% |
2 |
10.00% |
| Kazunori Miyazawa |
10 |
3.03% |
1 |
5.00% |
| Dmitry Mishin |
8 |
2.42% |
1 |
5.00% |
| Christoph Hellwig |
6 |
1.82% |
2 |
10.00% |
| Daniel Baluta |
2 |
0.61% |
1 |
5.00% |
| Konstantin Khlebnikov |
1 |
0.30% |
1 |
5.00% |
| Wei Yongjun |
1 |
0.30% |
1 |
5.00% |
| Jarkko Sakkinen |
1 |
0.30% |
1 |
5.00% |
| David S. Miller |
1 |
0.30% |
1 |
5.00% |
| Greg Kroah-Hartman |
1 |
0.30% |
1 |
5.00% |
| Paul Gortmaker |
1 |
0.30% |
1 |
5.00% |
| Total |
330 |
|
20 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/bpfilter.h>
#include <uapi/linux/bpf.h>
#include <linux/wait.h>
#include <linux/kmod.h>
#include <linux/fs.h>
#include <linux/file.h>
struct bpfilter_umh_ops bpfilter_ops;
EXPORT_SYMBOL_GPL(bpfilter_ops);
static int bpfilter_mbox_request(struct sock *sk, int optname, sockptr_t optval,
unsigned int optlen, bool is_set)
{
int err;
mutex_lock(&bpfilter_ops.lock);
if (!bpfilter_ops.sockopt) {
mutex_unlock(&bpfilter_ops.lock);
request_module("bpfilter");
mutex_lock(&bpfilter_ops.lock);
if (!bpfilter_ops.sockopt) {
err = -ENOPROTOOPT;
goto out;
}
}
if (bpfilter_ops.info.tgid &&
thread_group_exited(bpfilter_ops.info.tgid))
umd_cleanup_helper(&bpfilter_ops.info);
if (!bpfilter_ops.info.tgid) {
err = bpfilter_ops.start();
if (err)
goto out;
}
err = bpfilter_ops.sockopt(sk, optname, optval, optlen, is_set);
out:
mutex_unlock(&bpfilter_ops.lock);
return err;
}
int bpfilter_ip_set_sockopt(struct sock *sk, int optname, sockptr_t optval,
unsigned int optlen)
{
return bpfilter_mbox_request(sk, optname, optval, optlen, true);
}
int bpfilter_ip_get_sockopt(struct sock *sk, int optname, char __user *optval,
int __user *optlen)
{
int len;
if (get_user(len, optlen))
return -EFAULT;
return bpfilter_mbox_request(sk, optname, USER_SOCKPTR(optval), len,
false);
}
static int __init bpfilter_sockopt_init(void)
{
mutex_init(&bpfilter_ops.lock);
bpfilter_ops.info.tgid = NULL;
bpfilter_ops.info.driver_name = "bpfilter_umh";
return 0;
}
device_initcall(bpfilter_sockopt_init);