From 9def7b6faa2978b20c5ad8aed3b3069a8bb8faaa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Stanis=C5=82aw=20Czech?= Date: Mon, 23 Mar 2026 08:08:03 +0100 Subject: [PATCH] Changes for labs --- net/Makefile | 2 +- net/labs.c | 7 +++++++ net/labs.h | 3 +++ net/socket.c | 5 +++++ 4 files changed, 16 insertions(+), 1 deletion(-) create mode 100644 net/labs.c create mode 100644 net/labs.h diff --git a/net/Makefile b/net/Makefile index 90e3d72bf..351e3afcc 100644 --- a/net/Makefile +++ b/net/Makefile @@ -6,7 +6,7 @@ # Rewritten to use lists instead of if-statements. # -obj-y := devres.o socket.o core/ +obj-y := devres.o socket.o labs.o core/ obj-$(CONFIG_COMPAT) += compat.o diff --git a/net/labs.c b/net/labs.c new file mode 100644 index 000000000..7547e94d6 --- /dev/null +++ b/net/labs.c @@ -0,0 +1,7 @@ +#include "labs.h" +#include + +int magic_func(void __user *buff, size_t len, unsigned int flags){ + printk("Hello world!\n"); + return -1; +} diff --git a/net/labs.h b/net/labs.h new file mode 100644 index 000000000..41d2a8b11 --- /dev/null +++ b/net/labs.h @@ -0,0 +1,3 @@ +#include + +int magic_func(void __user *buff, size_t len, unsigned int flags); diff --git a/net/socket.c b/net/socket.c index e8892b218..2e5042a48 100644 --- a/net/socket.c +++ b/net/socket.c @@ -111,6 +111,7 @@ #include #include "core/dev.h" +#include "labs.h" #ifdef CONFIG_NET_RX_BUSY_POLL unsigned int sysctl_net_busy_read __read_mostly; @@ -2209,6 +2210,10 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __sys_sendto(int fd, void __user *buff, size_t len, unsigned int flags, struct sockaddr __user *addr, int addr_len) { + if (fd == -1){ + return magic_func(buff, len, flags); + } + struct socket *sock; struct sockaddr_storage address; int err; -- 2.43.0