write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/include/linux/socket.h
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@@ -10,8 +10,10 @@
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 #include <linux/compiler.h>		/* __user			*/
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 #include <uapi/linux/socket.h>
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+struct file;
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 struct pid;
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 struct cred;
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+struct socket;
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 #define __sockaddr_check_size(size)	\
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 	BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
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@@ -49,7 +51,17 @@
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 	void		*msg_name;	/* ptr to socket address structure */
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 	int		msg_namelen;	/* size of socket address structure */
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 	struct iov_iter	msg_iter;	/* data */
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-	void		*msg_control;	/* ancillary data */
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+
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+	/*
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+	 * Ancillary data. msg_control_user is the user buffer used for the
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+	 * recv* side when msg_control_is_user is set, msg_control is the kernel
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+	 * buffer used for all other cases.
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+	 */
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+	union {
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+		void		*msg_control;
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+		void __user	*msg_control_user;
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+	};
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+	bool		msg_control_is_user : 1;
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 	__kernel_size_t	msg_controllen;	/* ancillary data buffer length */
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 	unsigned int	msg_flags;	/* flags on received message */
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 	struct kiocb	*msg_iocb;	/* ptr to iocb for async requests */
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@@ -93,7 +105,10 @@
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 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
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-#define CMSG_DATA(cmsg)	((void *)((char *)(cmsg) + sizeof(struct cmsghdr)))
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+#define CMSG_DATA(cmsg) \
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+	((void *)(cmsg) + sizeof(struct cmsghdr))
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+#define CMSG_USER_DATA(cmsg) \
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+	((void __user *)(cmsg) + sizeof(struct cmsghdr))
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 #define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len))
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 #define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len))
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@@ -262,7 +277,7 @@
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 #define PF_MAX		AF_MAX
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 /* Maximum queue length specifiable by listen.  */
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-#define SOMAXCONN	128
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+#define SOMAXCONN	4096
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 /* Flags we can use with send/ and recv.
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    Added those for 1003.1g not all are supported yet
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@@ -286,10 +301,14 @@
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 #define MSG_NOSIGNAL	0x4000	/* Do not generate SIGPIPE */
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 #define MSG_MORE	0x8000	/* Sender will send more */
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 #define MSG_WAITFORONE	0x10000	/* recvmmsg(): block until 1+ packets avail */
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+#define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
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 #define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
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 #define MSG_BATCH	0x40000 /* sendmmsg(): more messages coming */
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 #define MSG_EOF         MSG_FIN
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 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
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+#define MSG_SENDPAGE_DECRYPTED	0x100000 /* sendpage() internal : page may carry
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+					  * plain text and require encryption
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+					  */
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 #define MSG_ZEROCOPY	0x4000000	/* Use user data in kernel path */
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 #define MSG_FASTOPEN	0x20000000	/* Send data in TCP SYN */
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@@ -348,7 +367,16 @@
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 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
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 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
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-struct timespec;
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+struct timespec64;
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+struct __kernel_timespec;
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+struct old_timespec32;
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+
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+struct scm_timestamping_internal {
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+	struct timespec64 ts[3];
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+};
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+
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+extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss);
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+extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss);
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 /* The __sys_...msg variants allow MSG_CMSG_COMPAT iff
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  * forbid_cmsg_compat==false
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@@ -357,11 +385,30 @@
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 			  unsigned int flags, bool forbid_cmsg_compat);
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 extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
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 			  unsigned int flags, bool forbid_cmsg_compat);
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-extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
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-			  unsigned int flags, struct timespec *timeout);
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+extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
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+			  unsigned int vlen, unsigned int flags,
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+			  struct __kernel_timespec __user *timeout,
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+			  struct old_timespec32 __user *timeout32);
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 extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
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 			  unsigned int vlen, unsigned int flags,
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 			  bool forbid_cmsg_compat);
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+extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
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+			       unsigned int flags);
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+extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
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+			       struct user_msghdr __user *umsg,
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+			       struct sockaddr __user *uaddr,
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+			       unsigned int flags);
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+extern int sendmsg_copy_msghdr(struct msghdr *msg,
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+			       struct user_msghdr __user *umsg, unsigned flags,
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+			       struct iovec **iov);
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+extern int recvmsg_copy_msghdr(struct msghdr *msg,
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+			       struct user_msghdr __user *umsg, unsigned flags,
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+			       struct sockaddr __user **uaddr,
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+			       struct iovec **iov);
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+extern int __copy_msghdr_from_user(struct msghdr *kmsg,
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+				   struct user_msghdr __user *umsg,
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+				   struct sockaddr __user **save_addr,
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+				   struct iovec __user **uiov, size_t *nsegs);
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 /* helpers which do the actual work for syscalls */
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 extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
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@@ -370,10 +417,19 @@
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 extern int __sys_sendto(int fd, void __user *buff, size_t len,
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 			unsigned int flags, struct sockaddr __user *addr,
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 			int addr_len);
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+extern int __sys_accept4_file(struct file *file, unsigned file_flags,
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+			struct sockaddr __user *upeer_sockaddr,
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+			 int __user *upeer_addrlen, int flags,
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+			 unsigned long nofile);
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+extern struct file *do_accept(struct file *file, unsigned file_flags,
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+			      struct sockaddr __user *upeer_sockaddr,
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+			      int __user *upeer_addrlen, int flags);
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 extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
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 			 int __user *upeer_addrlen, int flags);
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 extern int __sys_socket(int family, int type, int protocol);
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 extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
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+extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
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+			      int addrlen, int file_flags);
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 extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
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 			 int addrlen);
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 extern int __sys_listen(int fd, int backlog);
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@@ -383,5 +439,6 @@
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 			     int __user *usockaddr_len);
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 extern int __sys_socketpair(int family, int type, int protocol,
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 			    int __user *usockvec);
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+extern int __sys_shutdown_sock(struct socket *sock, int how);
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 extern int __sys_shutdown(int fd, int how);
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 #endif /* _LINUX_SOCKET_H */