summaryrefslogtreecommitdiff
path: root/include/linux/socket.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/socket.h')
-rw-r--r--include/linux/socket.h56
1 files changed, 38 insertions, 18 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 13c3a237b9c9..ec715ad4bf25 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -16,6 +16,7 @@ struct cred;
struct socket;
struct sock;
struct sk_buff;
+struct proto_accept_arg;
#define __sockaddr_check_size(size) \
BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
@@ -31,12 +32,27 @@ typedef __kernel_sa_family_t sa_family_t;
* 1003.1g requires sa_family_t and that sa_data is char.
*/
+/* Deprecated for in-kernel use. Use struct sockaddr_unsized instead. */
struct sockaddr {
sa_family_t sa_family; /* address family, AF_xxx */
- union {
- char sa_data_min[14]; /* Minimum 14 bytes of protocol address */
- DECLARE_FLEX_ARRAY(char, sa_data);
- };
+ char sa_data[14]; /* 14 bytes of protocol address */
+};
+
+/**
+ * struct sockaddr_unsized - Unspecified size sockaddr for callbacks
+ * @sa_family: Address family (AF_UNIX, AF_INET, AF_INET6, etc.)
+ * @sa_data: Flexible array for address data
+ *
+ * This structure is designed for callback interfaces where the
+ * total size is known via the sockaddr_len parameter. Unlike struct
+ * sockaddr which has a fixed 14-byte sa_data limit or struct
+ * sockaddr_storage which has a fixed 128-byte sa_data limit, this
+ * structure can accommodate addresses of any size, but must be used
+ * carefully.
+ */
+struct sockaddr_unsized {
+ __kernel_sa_family_t sa_family; /* address family, AF_xxx */
+ char sa_data[]; /* flexible address data */
};
struct linger {
@@ -75,7 +91,7 @@ struct msghdr {
__kernel_size_t msg_controllen; /* ancillary data buffer length */
struct kiocb *msg_iocb; /* ptr to iocb for async requests */
struct ubuf_info *msg_ubuf;
- int (*sg_from_iter)(struct sock *sk, struct sk_buff *skb,
+ int (*sg_from_iter)(struct sk_buff *skb,
struct iov_iter *from, size_t length);
};
@@ -167,7 +183,7 @@ static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr
return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
}
-static inline size_t msg_data_left(struct msghdr *msg)
+static inline size_t msg_data_left(const struct msghdr *msg)
{
return iov_iter_count(&msg->msg_iter);
}
@@ -177,6 +193,7 @@ static inline size_t msg_data_left(struct msghdr *msg)
#define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
#define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
#define SCM_SECURITY 0x03 /* rw: security label */
+#define SCM_PIDFD 0x04 /* ro: pidfd (int) */
struct ucred {
__u32 pid;
@@ -318,7 +335,6 @@ struct ucred {
#define MSG_MORE 0x8000 /* Sender will send more */
#define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */
#define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
-#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
#define MSG_BATCH 0x40000 /* sendmmsg(): more messages coming */
#define MSG_EOF MSG_FIN
#define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
@@ -326,7 +342,9 @@ struct ucred {
* plain text and require encryption
*/
+#define MSG_SOCK_DEVMEM 0x2000000 /* Receive devmem skbs as cmsg */
#define MSG_ZEROCOPY 0x4000000 /* Use user data in kernel path */
+#define MSG_SPLICE_PAGES 0x8000000 /* Splice the pages from the iterator in sendmsg() */
#define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */
#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exec for file
descriptor received through
@@ -337,6 +355,9 @@ struct ucred {
#define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */
#endif
+/* Flags to be cleared on entry by sendmsg and sendmmsg syscalls */
+#define MSG_INTERNAL_SENDMSG_FLAGS \
+ (MSG_SPLICE_PAGES | MSG_SENDPAGE_NOPOLICY | MSG_SENDPAGE_DECRYPTED)
/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
#define SOL_IP 0
@@ -379,12 +400,15 @@ struct ucred {
#define SOL_MPTCP 284
#define SOL_MCTP 285
#define SOL_SMC 286
+#define SOL_VSOCK 287
/* IPX options */
#define IPX_TYPE 1
extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
+extern int put_cmsg_notrunc(struct msghdr *msg, int level, int type, int len,
+ void *data);
struct timespec64;
struct __kernel_timespec;
@@ -417,13 +441,6 @@ extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
struct user_msghdr __user *umsg,
struct sockaddr __user *uaddr,
unsigned int flags);
-extern int sendmsg_copy_msghdr(struct msghdr *msg,
- struct user_msghdr __user *umsg, unsigned flags,
- struct iovec **iov);
-extern int recvmsg_copy_msghdr(struct msghdr *msg,
- struct user_msghdr __user *umsg, unsigned flags,
- struct sockaddr __user **uaddr,
- struct iovec **iov);
extern int __copy_msghdr(struct msghdr *kmsg,
struct user_msghdr *umsg,
struct sockaddr __user **save_addr);
@@ -435,7 +452,7 @@ extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
extern int __sys_sendto(int fd, void __user *buff, size_t len,
unsigned int flags, struct sockaddr __user *addr,
int addr_len);
-extern struct file *do_accept(struct file *file, unsigned file_flags,
+extern struct file *do_accept(struct file *file, struct proto_accept_arg *arg,
struct sockaddr __user *upeer_sockaddr,
int __user *upeer_addrlen, int flags);
extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
@@ -443,15 +460,18 @@ extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
extern int __sys_socket(int family, int type, int protocol);
extern struct file *__sys_socket_file(int family, int type, int protocol);
extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
+extern int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address,
+ int addrlen);
extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
int addrlen, int file_flags);
extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
int addrlen);
extern int __sys_listen(int fd, int backlog);
+extern int __sys_listen_socket(struct socket *sock, int backlog);
+extern int do_getsockname(struct socket *sock, int peer,
+ struct sockaddr __user *usockaddr, int __user *usockaddr_len);
extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
- int __user *usockaddr_len);
-extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
- int __user *usockaddr_len);
+ int __user *usockaddr_len, int peer);
extern int __sys_socketpair(int family, int type, int protocol,
int __user *usockvec);
extern int __sys_shutdown_sock(struct socket *sock, int how);
generated by cgit (git 2.34.1) at 2025-12-21 18:27:46 +0000