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hc
2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b 
 kernel/include/linux/socket.h
....@@ -10,8 +10,10 @@
1010 #include <linux/compiler.h>		/* __user			*/
1111 #include <uapi/linux/socket.h>
1212 
13
+struct file;
1314 struct pid;
1415 struct cred;
16
+struct socket;
1517 
1618 #define __sockaddr_check_size(size)	\
1719 	BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
....@@ -49,7 +51,17 @@
4951 	void		*msg_name;	/* ptr to socket address structure */
5052 	int		msg_namelen;	/* size of socket address structure */
5153 	struct iov_iter	msg_iter;	/* data */
52
-	void		*msg_control;	/* ancillary data */
54
+
55
+	/*
56
+	 * Ancillary data. msg_control_user is the user buffer used for the
57
+	 * recv* side when msg_control_is_user is set, msg_control is the kernel
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+	 * buffer used for all other cases.
59
+	 */
60
+	union {
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+		void		*msg_control;
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+		void __user	*msg_control_user;
63
+	};
64
+	bool		msg_control_is_user : 1;
5365 	__kernel_size_t	msg_controllen;	/* ancillary data buffer length */
5466 	unsigned int	msg_flags;	/* flags on received message */
5567 	struct kiocb	*msg_iocb;	/* ptr to iocb for async requests */
....@@ -93,7 +105,10 @@
93105 
94106 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
95107 
96
-#define CMSG_DATA(cmsg)	((void *)((char *)(cmsg) + sizeof(struct cmsghdr)))
108
+#define CMSG_DATA(cmsg) \
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+	((void *)(cmsg) + sizeof(struct cmsghdr))
110
+#define CMSG_USER_DATA(cmsg) \
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+	((void __user *)(cmsg) + sizeof(struct cmsghdr))
97112 #define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len))
98113 #define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len))
99114 
....@@ -262,7 +277,7 @@
262277 #define PF_MAX		AF_MAX
263278 
264279 /* Maximum queue length specifiable by listen.  */
265
-#define SOMAXCONN	128
280
+#define SOMAXCONN	4096
266281 
267282 /* Flags we can use with send/ and recv.
268283    Added those for 1003.1g not all are supported yet
....@@ -286,10 +301,14 @@
286301 #define MSG_NOSIGNAL	0x4000	/* Do not generate SIGPIPE */
287302 #define MSG_MORE	0x8000	/* Sender will send more */
288303 #define MSG_WAITFORONE	0x10000	/* recvmmsg(): block until 1+ packets avail */
304
+#define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
289305 #define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
290306 #define MSG_BATCH	0x40000 /* sendmmsg(): more messages coming */
291307 #define MSG_EOF         MSG_FIN
292308 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
309
+#define MSG_SENDPAGE_DECRYPTED	0x100000 /* sendpage() internal : page may carry
310
+					  * plain text and require encryption
311
+					  */
293312 
294313 #define MSG_ZEROCOPY	0x4000000	/* Use user data in kernel path */
295314 #define MSG_FASTOPEN	0x20000000	/* Send data in TCP SYN */
....@@ -348,7 +367,16 @@
348367 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
349368 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
350369 
351
-struct timespec;
370
+struct timespec64;
371
+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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+};
377
+
378
+extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss);
379
+extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss);
352380 
353381 /* The __sys_...msg variants allow MSG_CMSG_COMPAT iff
354382  * forbid_cmsg_compat==false
....@@ -357,11 +385,30 @@
357385 			  unsigned int flags, bool forbid_cmsg_compat);
358386 extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
359387 			  unsigned int flags, bool forbid_cmsg_compat);
360
-extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
361
-			  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);
362392 extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
363393 			  unsigned int vlen, unsigned int flags,
364394 			  bool forbid_cmsg_compat);
395
+extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
396
+			       unsigned int flags);
397
+extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg,
398
+			       struct user_msghdr __user *umsg,
399
+			       struct sockaddr __user *uaddr,
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+			       unsigned int flags);
401
+extern int sendmsg_copy_msghdr(struct msghdr *msg,
402
+			       struct user_msghdr __user *umsg, unsigned flags,
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+			       struct iovec **iov);
404
+extern int recvmsg_copy_msghdr(struct msghdr *msg,
405
+			       struct user_msghdr __user *umsg, unsigned flags,
406
+			       struct sockaddr __user **uaddr,
407
+			       struct iovec **iov);
408
+extern int __copy_msghdr_from_user(struct msghdr *kmsg,
409
+				   struct user_msghdr __user *umsg,
410
+				   struct sockaddr __user **save_addr,
411
+				   struct iovec __user **uiov, size_t *nsegs);
365412 
366413 /* helpers which do the actual work for syscalls */
367414 extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
....@@ -370,10 +417,19 @@
370417 extern int __sys_sendto(int fd, void __user *buff, size_t len,
371418 			unsigned int flags, struct sockaddr __user *addr,
372419 			int addr_len);
420
+extern int __sys_accept4_file(struct file *file, unsigned file_flags,
421
+			struct sockaddr __user *upeer_sockaddr,
422
+			 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,
426
+			      int __user *upeer_addrlen, int flags);
373427 extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
374428 			 int __user *upeer_addrlen, int flags);
375429 extern int __sys_socket(int family, int type, int protocol);
376430 extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
431
+extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
432
+			      int addrlen, int file_flags);
377433 extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
378434 			 int addrlen);
379435 extern int __sys_listen(int fd, int backlog);
....@@ -383,5 +439,6 @@
383439 			     int __user *usockaddr_len);
384440 extern int __sys_socketpair(int family, int type, int protocol,
385441 			    int __user *usockvec);
442
+extern int __sys_shutdown_sock(struct socket *sock, int how);
386443 extern int __sys_shutdown(int fd, int how);
387444 #endif /* _LINUX_SOCKET_H */