| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 1 Aug 2011 11:04:25 -0700
From: Joe Damato <joe@...ndary.com>
To: zbr@...emap.net
Cc: netdev@...r.kernel.org, Joe Damato <joe@...ndary.com>
Subject: [PATCH 2/2] Create a new connector proc_event for successful calls to accept.
Signed-off-by: Joe Damato <joe@...ndary.com>
---
drivers/connector/cn_proc.c | 36 ++++++++++++++++++++++++++++++++++++
include/linux/cn_proc.h | 19 ++++++++++++++++++-
net/socket.c | 3 +++
3 files changed, 57 insertions(+), 1 deletions(-)
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 3e88d07..1106014 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -85,6 +85,42 @@ void proc_connect_connector(struct task_struct *task, struct socket *sock,
cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL);
}
+void proc_accept_connector(struct task_struct *task, struct socket *sock,
+ struct sockaddr *addr, int addrlen)
+{
+ struct cn_msg *msg;
+ struct proc_event *ev;
+ __u8 buffer[CN_PROC_MSG_SIZE];
+ struct timespec ts;
+
+ if (atomic_read(&proc_event_num_listeners) < 1)
+ return;
+
+ msg = (struct cn_msg*)buffer;
+ ev = (struct proc_event*)msg->data;
+ get_seq(&msg->seq, &ev->cpu);
+ ktime_get_ts(&ts); /* get high res monotonic timestamp */
+ put_unaligned(timespec_to_ns(&ts), (__u64 *)&ev->timestamp_ns);
+ ev->what = PROC_EVENT_ACCEPT;
+ ev->event_data.accept.process_pid = task->pid;
+ ev->event_data.accept.process_tgid = task->tgid;
+ ev->event_data.accept.protocol = sock->sk->sk_protocol;
+ ev->event_data.accept.address_len = addrlen;
+ memcpy(&ev->event_data.accept.address, addr, addrlen);
+
+ ev->event_data.accept.local_address_len = sizeof(struct __kernel_sockaddr_storage);
+ kernel_getsockname(sock, (struct sockaddr *) &ev->event_data.accept.local_address,
+ &ev->event_data.accept.local_address_len);
+
+ memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id));
+ msg->ack = 0; /* not used */
+ msg->len = sizeof(*ev);
+ /* If cn_netlink_send() failed, the data is not sent */
+ cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL);
+
+ return;
+}
+
void proc_fork_connector(struct task_struct *task)
{
struct cn_msg *msg;
diff --git a/include/linux/cn_proc.h b/include/linux/cn_proc.h
index a49ed22..d68a3de 100644
--- a/include/linux/cn_proc.h
+++ b/include/linux/cn_proc.h
@@ -56,7 +56,8 @@ struct proc_event {
PROC_EVENT_SID = 0x00000080,
PROC_EVENT_PTRACE = 0x00000100,
PROC_EVENT_CONNECT = 0x00000400,
- /* "next" should be 0x00000800 */
+ PROC_EVENT_ACCEPT = 0x00000800,
+ /* "next" should be 0x00001000 */
/* "last" is the last process event: exit */
PROC_EVENT_EXIT = 0x80000000
} what;
@@ -90,6 +91,16 @@ struct proc_event {
int protocol;
} connect;
+ struct accept_proc_event {
+ __kernel_pid_t process_pid;
+ __kernel_pid_t process_tgid;
+ struct sockaddr_storage address;
+ int address_len;
+ struct __kernel_sockaddr_storage local_address;
+ int local_address_len;
+ int protocol;
+ } accept;
+
struct id_proc_event {
__kernel_pid_t process_pid;
__kernel_pid_t process_tgid;
@@ -133,6 +144,8 @@ void proc_ptrace_connector(struct task_struct *task, int which_id);
void proc_exit_connector(struct task_struct *task);
void proc_connect_connector(struct task_struct *task, struct socket *sock,
struct sockaddr *addr, int addrlen);
+void proc_accept_connector(struct task_struct *task, struct socket *sock,
+ struct sockaddr *addr, int addrlen);
#else
static inline void proc_fork_connector(struct task_struct *task)
{}
@@ -159,6 +172,10 @@ static inline void proc_connect_connector(struct task_struct *task,
struct sockaddr *addr, int addrlen)
{}
+static inline void proc_accept_connector(struct task_struct *task,
+ struct socket *sock,
+ struct sockaddr *addr, int addrlen)
+{}
#endif /* CONFIG_PROC_EVENTS */
#endif /* __KERNEL__ */
#endif /* CN_PROC_H */
diff --git a/net/socket.c b/net/socket.c
index b4f9a6c..d21a266 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1544,6 +1544,9 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
goto out_fd;
}
+ proc_accept_connector(current, newsock,
+ (struct sockaddr *)&address, len);
+
/* File flags are not inherited via accept() unlike another OSes. */
fd_install(newfd, newfile);
--
1.7.4.1
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists