| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | 
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| 2 | #ifndef _LINUX_SOCKET_H | 
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| 3 | #define _LINUX_SOCKET_H | 
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| 4 |  | 
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| 5 |  | 
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| 6 | #include <asm/socket.h>			/* arch-dependent defines	*/ | 
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| 7 | #include <linux/sockios.h>		/* the SIOCxxx I/O controls	*/ | 
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| 8 | #include <linux/uio.h>			/* iovec support		*/ | 
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| 9 | #include <linux/types.h>		/* pid_t			*/ | 
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| 10 | #include <linux/compiler.h>		/* __user			*/ | 
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| 11 | #include <uapi/linux/socket.h> | 
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| 12 |  | 
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| 13 | struct file; | 
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| 14 | struct pid; | 
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| 15 | struct cred; | 
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| 16 | struct socket; | 
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| 17 | struct sock; | 
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| 18 | struct sk_buff; | 
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| 19 | struct proto_accept_arg; | 
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| 20 |  | 
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| 21 | #define __sockaddr_check_size(size)	\ | 
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| 22 | BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) | 
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| 23 |  | 
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| 24 | #ifdef CONFIG_PROC_FS | 
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| 25 | struct seq_file; | 
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| 26 | extern void socket_seq_show(struct seq_file *seq); | 
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| 27 | #endif | 
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| 28 |  | 
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| 29 | typedef __kernel_sa_family_t	sa_family_t; | 
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| 30 |  | 
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| 31 | /* | 
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| 32 | *	1003.1g requires sa_family_t and that sa_data is char. | 
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| 33 | */ | 
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| 34 |  | 
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| 35 | struct sockaddr { | 
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| 36 | sa_family_t	sa_family;	/* address family, AF_xxx	*/ | 
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| 37 | union { | 
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| 38 | char sa_data_min[14];		/* Minimum 14 bytes of protocol address	*/ | 
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| 39 | DECLARE_FLEX_ARRAY(char, sa_data); | 
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| 40 | }; | 
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| 41 | }; | 
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| 42 |  | 
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| 43 | struct linger { | 
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| 44 | int		l_onoff;	/* Linger active		*/ | 
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| 45 | int		l_linger;	/* How long to linger for	*/ | 
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| 46 | }; | 
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| 47 |  | 
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| 48 | #define sockaddr_storage __kernel_sockaddr_storage | 
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| 49 |  | 
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| 50 | /* | 
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| 51 | *	As we do 4.4BSD message passing we use a 4.4BSD message passing | 
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| 52 | *	system, not 4.3. Thus msg_accrights(len) are now missing. They | 
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| 53 | *	belong in an obscure libc emulation or the bin. | 
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| 54 | */ | 
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| 55 |  | 
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| 56 | struct msghdr { | 
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| 57 | void		*msg_name;	/* ptr to socket address structure */ | 
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| 58 | int		msg_namelen;	/* size of socket address structure */ | 
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| 59 |  | 
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| 60 | int		msg_inq;	/* output, data left in socket */ | 
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| 61 |  | 
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| 62 | struct iov_iter	msg_iter;	/* data */ | 
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| 63 |  | 
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| 64 | /* | 
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| 65 | * Ancillary data. msg_control_user is the user buffer used for the | 
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| 66 | * recv* side when msg_control_is_user is set, msg_control is the kernel | 
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| 67 | * buffer used for all other cases. | 
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| 68 | */ | 
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| 69 | union { | 
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| 70 | void		*msg_control; | 
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| 71 | void __user	*msg_control_user; | 
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| 72 | }; | 
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| 73 | bool		msg_control_is_user : 1; | 
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| 74 | bool		msg_get_inq : 1;/* return INQ after receive */ | 
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| 75 | unsigned int	msg_flags;	/* flags on received message */ | 
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| 76 | __kernel_size_t	msg_controllen;	/* ancillary data buffer length */ | 
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| 77 | struct kiocb	*msg_iocb;	/* ptr to iocb for async requests */ | 
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| 78 | struct ubuf_info *msg_ubuf; | 
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| 79 | int (*sg_from_iter)(struct sk_buff *skb, | 
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| 80 | struct iov_iter *from, size_t length); | 
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| 81 | }; | 
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| 82 |  | 
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| 83 | struct user_msghdr { | 
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| 84 | void		__user *msg_name;	/* ptr to socket address structure */ | 
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| 85 | int		msg_namelen;		/* size of socket address structure */ | 
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| 86 | struct iovec	__user *msg_iov;	/* scatter/gather array */ | 
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| 87 | __kernel_size_t	msg_iovlen;		/* # elements in msg_iov */ | 
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| 88 | void		__user *msg_control;	/* ancillary data */ | 
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| 89 | __kernel_size_t	msg_controllen;		/* ancillary data buffer length */ | 
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| 90 | unsigned int	msg_flags;		/* flags on received message */ | 
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| 91 | }; | 
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| 92 |  | 
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| 93 | /* For recvmmsg/sendmmsg */ | 
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| 94 | struct mmsghdr { | 
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| 95 | struct user_msghdr  msg_hdr; | 
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| 96 | unsigned int        msg_len; | 
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| 97 | }; | 
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| 98 |  | 
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| 99 | /* | 
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| 100 | *	POSIX 1003.1g - ancillary data object information | 
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| 101 | *	Ancillary data consists of a sequence of pairs of | 
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| 102 | *	(cmsghdr, cmsg_data[]) | 
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| 103 | */ | 
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| 104 |  | 
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| 105 | struct cmsghdr { | 
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| 106 | __kernel_size_t	cmsg_len;	/* data byte count, including hdr */ | 
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| 107 | int		cmsg_level;	/* originating protocol */ | 
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| 108 | int		cmsg_type;	/* protocol-specific type */ | 
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| 109 | }; | 
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| 110 |  | 
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| 111 | /* | 
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| 112 | *	Ancillary data object information MACROS | 
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| 113 | *	Table 5-14 of POSIX 1003.1g | 
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| 114 | */ | 
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| 115 |  | 
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| 116 | #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) | 
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| 117 | #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) | 
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| 118 |  | 
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| 119 | #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) | 
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| 120 |  | 
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| 121 | #define CMSG_DATA(cmsg) \ | 
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| 122 | ((void *)(cmsg) + sizeof(struct cmsghdr)) | 
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| 123 | #define CMSG_USER_DATA(cmsg) \ | 
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| 124 | ((void __user *)(cmsg) + sizeof(struct cmsghdr)) | 
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| 125 | #define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len)) | 
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| 126 | #define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len)) | 
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| 127 |  | 
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| 128 | #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ | 
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| 129 | (struct cmsghdr *)(ctl) : \ | 
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| 130 | (struct cmsghdr *)NULL) | 
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| 131 | #define CMSG_FIRSTHDR(msg)	__CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) | 
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| 132 | #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ | 
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| 133 | (cmsg)->cmsg_len <= (unsigned long) \ | 
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| 134 | ((mhdr)->msg_controllen - \ | 
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| 135 | ((char *)(cmsg) - (char *)(mhdr)->msg_control))) | 
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| 136 | #define for_each_cmsghdr(cmsg, msg) \ | 
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| 137 | for (cmsg = CMSG_FIRSTHDR(msg); \ | 
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| 138 | cmsg; \ | 
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| 139 | cmsg = CMSG_NXTHDR(msg, cmsg)) | 
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| 140 |  | 
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| 141 | /* | 
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| 142 | *	Get the next cmsg header | 
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| 143 | * | 
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| 144 | *	PLEASE, do not touch this function. If you think, that it is | 
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| 145 | *	incorrect, grep kernel sources and think about consequences | 
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| 146 | *	before trying to improve it. | 
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| 147 | * | 
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| 148 | *	Now it always returns valid, not truncated ancillary object | 
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| 149 | *	HEADER. But caller still MUST check, that cmsg->cmsg_len is | 
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| 150 | *	inside range, given by msg->msg_controllen before using | 
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| 151 | *	ancillary object DATA.				--ANK (980731) | 
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| 152 | */ | 
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| 153 |  | 
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| 154 | static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, | 
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| 155 | struct cmsghdr *__cmsg) | 
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| 156 | { | 
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| 157 | struct cmsghdr * __ptr; | 
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| 158 |  | 
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| 159 | __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) +  CMSG_ALIGN(__cmsg->cmsg_len)); | 
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| 160 | if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) | 
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| 161 | return (struct cmsghdr *)0; | 
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| 162 |  | 
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| 163 | return __ptr; | 
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| 164 | } | 
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| 165 |  | 
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| 166 | static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) | 
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| 167 | { | 
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| 168 | return __cmsg_nxthdr(ctl: __msg->msg_control, size: __msg->msg_controllen, __cmsg); | 
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| 169 | } | 
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| 170 |  | 
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| 171 | static inline size_t msg_data_left(const struct msghdr *msg) | 
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| 172 | { | 
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| 173 | return iov_iter_count(i: &msg->msg_iter); | 
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| 174 | } | 
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| 175 |  | 
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| 176 | /* "Socket"-level control message types: */ | 
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| 177 |  | 
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| 178 | #define	SCM_RIGHTS	0x01		/* rw: access rights (array of int) */ | 
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| 179 | #define SCM_CREDENTIALS 0x02		/* rw: struct ucred		*/ | 
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| 180 | #define SCM_SECURITY	0x03		/* rw: security label		*/ | 
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| 181 | #define SCM_PIDFD	0x04		/* ro: pidfd (int)		*/ | 
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| 182 |  | 
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| 183 | struct ucred { | 
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| 184 | __u32	pid; | 
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| 185 | __u32	uid; | 
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| 186 | __u32	gid; | 
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| 187 | }; | 
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| 188 |  | 
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| 189 | /* Supported address families. */ | 
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| 190 | #define AF_UNSPEC	0 | 
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| 191 | #define AF_UNIX		1	/* Unix domain sockets 		*/ | 
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| 192 | #define AF_LOCAL	1	/* POSIX name for AF_UNIX	*/ | 
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| 193 | #define AF_INET		2	/* Internet IP Protocol 	*/ | 
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| 194 | #define AF_AX25		3	/* Amateur Radio AX.25 		*/ | 
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| 195 | #define AF_IPX		4	/* Novell IPX 			*/ | 
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| 196 | #define AF_APPLETALK	5	/* AppleTalk DDP 		*/ | 
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| 197 | #define AF_NETROM	6	/* Amateur Radio NET/ROM 	*/ | 
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| 198 | #define AF_BRIDGE	7	/* Multiprotocol bridge 	*/ | 
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| 199 | #define AF_ATMPVC	8	/* ATM PVCs			*/ | 
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| 200 | #define AF_X25		9	/* Reserved for X.25 project 	*/ | 
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| 201 | #define AF_INET6	10	/* IP version 6			*/ | 
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| 202 | #define AF_ROSE		11	/* Amateur Radio X.25 PLP	*/ | 
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| 203 | #define AF_DECnet	12	/* Reserved for DECnet project	*/ | 
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| 204 | #define AF_NETBEUI	13	/* Reserved for 802.2LLC project*/ | 
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| 205 | #define AF_SECURITY	14	/* Security callback pseudo AF */ | 
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| 206 | #define AF_KEY		15      /* PF_KEY key management API */ | 
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| 207 | #define AF_NETLINK	16 | 
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| 208 | #define AF_ROUTE	AF_NETLINK /* Alias to emulate 4.4BSD */ | 
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| 209 | #define AF_PACKET	17	/* Packet family		*/ | 
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| 210 | #define AF_ASH		18	/* Ash				*/ | 
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| 211 | #define AF_ECONET	19	/* Acorn Econet			*/ | 
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| 212 | #define AF_ATMSVC	20	/* ATM SVCs			*/ | 
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| 213 | #define AF_RDS		21	/* RDS sockets 			*/ | 
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| 214 | #define AF_SNA		22	/* Linux SNA Project (nutters!) */ | 
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| 215 | #define AF_IRDA		23	/* IRDA sockets			*/ | 
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| 216 | #define AF_PPPOX	24	/* PPPoX sockets		*/ | 
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| 217 | #define AF_WANPIPE	25	/* Wanpipe API Sockets */ | 
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| 218 | #define AF_LLC		26	/* Linux LLC			*/ | 
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| 219 | #define AF_IB		27	/* Native InfiniBand address	*/ | 
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| 220 | #define AF_MPLS		28	/* MPLS */ | 
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| 221 | #define AF_CAN		29	/* Controller Area Network      */ | 
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| 222 | #define AF_TIPC		30	/* TIPC sockets			*/ | 
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| 223 | #define AF_BLUETOOTH	31	/* Bluetooth sockets 		*/ | 
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| 224 | #define AF_IUCV		32	/* IUCV sockets			*/ | 
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| 225 | #define AF_RXRPC	33	/* RxRPC sockets 		*/ | 
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| 226 | #define AF_ISDN		34	/* mISDN sockets 		*/ | 
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| 227 | #define AF_PHONET	35	/* Phonet sockets		*/ | 
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| 228 | #define AF_IEEE802154	36	/* IEEE802154 sockets		*/ | 
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| 229 | #define AF_CAIF		37	/* CAIF sockets			*/ | 
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| 230 | #define AF_ALG		38	/* Algorithm sockets		*/ | 
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| 231 | #define AF_NFC		39	/* NFC sockets			*/ | 
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| 232 | #define AF_VSOCK	40	/* vSockets			*/ | 
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| 233 | #define AF_KCM		41	/* Kernel Connection Multiplexor*/ | 
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| 234 | #define AF_QIPCRTR	42	/* Qualcomm IPC Router          */ | 
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| 235 | #define AF_SMC		43	/* smc sockets: reserve number for | 
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| 236 | * PF_SMC protocol family that | 
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| 237 | * reuses AF_INET address family | 
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| 238 | */ | 
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| 239 | #define AF_XDP		44	/* XDP sockets			*/ | 
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| 240 | #define AF_MCTP		45	/* Management component | 
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| 241 | * transport protocol | 
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| 242 | */ | 
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| 243 |  | 
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| 244 | #define AF_MAX		46	/* For now.. */ | 
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| 245 |  | 
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| 246 | /* Protocol families, same as address families. */ | 
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| 247 | #define PF_UNSPEC	AF_UNSPEC | 
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| 248 | #define PF_UNIX		AF_UNIX | 
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| 249 | #define PF_LOCAL	AF_LOCAL | 
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| 250 | #define PF_INET		AF_INET | 
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| 251 | #define PF_AX25		AF_AX25 | 
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| 252 | #define PF_IPX		AF_IPX | 
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| 253 | #define PF_APPLETALK	AF_APPLETALK | 
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| 254 | #define	PF_NETROM	AF_NETROM | 
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| 255 | #define PF_BRIDGE	AF_BRIDGE | 
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| 256 | #define PF_ATMPVC	AF_ATMPVC | 
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| 257 | #define PF_X25		AF_X25 | 
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| 258 | #define PF_INET6	AF_INET6 | 
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| 259 | #define PF_ROSE		AF_ROSE | 
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| 260 | #define PF_DECnet	AF_DECnet | 
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| 261 | #define PF_NETBEUI	AF_NETBEUI | 
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| 262 | #define PF_SECURITY	AF_SECURITY | 
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| 263 | #define PF_KEY		AF_KEY | 
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| 264 | #define PF_NETLINK	AF_NETLINK | 
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| 265 | #define PF_ROUTE	AF_ROUTE | 
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| 266 | #define PF_PACKET	AF_PACKET | 
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| 267 | #define PF_ASH		AF_ASH | 
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| 268 | #define PF_ECONET	AF_ECONET | 
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| 269 | #define PF_ATMSVC	AF_ATMSVC | 
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| 270 | #define PF_RDS		AF_RDS | 
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| 271 | #define PF_SNA		AF_SNA | 
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| 272 | #define PF_IRDA		AF_IRDA | 
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| 273 | #define PF_PPPOX	AF_PPPOX | 
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| 274 | #define PF_WANPIPE	AF_WANPIPE | 
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| 275 | #define PF_LLC		AF_LLC | 
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| 276 | #define PF_IB		AF_IB | 
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| 277 | #define PF_MPLS		AF_MPLS | 
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| 278 | #define PF_CAN		AF_CAN | 
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| 279 | #define PF_TIPC		AF_TIPC | 
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| 280 | #define PF_BLUETOOTH	AF_BLUETOOTH | 
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| 281 | #define PF_IUCV		AF_IUCV | 
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| 282 | #define PF_RXRPC	AF_RXRPC | 
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| 283 | #define PF_ISDN		AF_ISDN | 
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| 284 | #define PF_PHONET	AF_PHONET | 
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| 285 | #define PF_IEEE802154	AF_IEEE802154 | 
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| 286 | #define PF_CAIF		AF_CAIF | 
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| 287 | #define PF_ALG		AF_ALG | 
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| 288 | #define PF_NFC		AF_NFC | 
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| 289 | #define PF_VSOCK	AF_VSOCK | 
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| 290 | #define PF_KCM		AF_KCM | 
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| 291 | #define PF_QIPCRTR	AF_QIPCRTR | 
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| 292 | #define PF_SMC		AF_SMC | 
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| 293 | #define PF_XDP		AF_XDP | 
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| 294 | #define PF_MCTP		AF_MCTP | 
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| 295 | #define PF_MAX		AF_MAX | 
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| 296 |  | 
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| 297 | /* Maximum queue length specifiable by listen.  */ | 
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| 298 | #define SOMAXCONN	4096 | 
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| 299 |  | 
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| 300 | /* Flags we can use with send/ and recv. | 
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| 301 | Added those for 1003.1g not all are supported yet | 
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| 302 | */ | 
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| 303 |  | 
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| 304 | #define MSG_OOB		1 | 
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| 305 | #define MSG_PEEK	2 | 
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| 306 | #define MSG_DONTROUTE	4 | 
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| 307 | #define MSG_TRYHARD     4       /* Synonym for MSG_DONTROUTE for DECnet */ | 
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| 308 | #define MSG_CTRUNC	8 | 
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| 309 | #define MSG_PROBE	0x10	/* Do not send. Only probe path f.e. for MTU */ | 
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| 310 | #define MSG_TRUNC	0x20 | 
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| 311 | #define MSG_DONTWAIT	0x40	/* Nonblocking io		 */ | 
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| 312 | #define MSG_EOR         0x80	/* End of record */ | 
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| 313 | #define MSG_WAITALL	0x100	/* Wait for a full request */ | 
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| 314 | #define MSG_FIN         0x200 | 
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| 315 | #define MSG_SYN		0x400 | 
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| 316 | #define MSG_CONFIRM	0x800	/* Confirm path validity */ | 
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| 317 | #define MSG_RST		0x1000 | 
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| 318 | #define MSG_ERRQUEUE	0x2000	/* Fetch message from error queue */ | 
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| 319 | #define MSG_NOSIGNAL	0x4000	/* Do not generate SIGPIPE */ | 
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| 320 | #define MSG_MORE	0x8000	/* Sender will send more */ | 
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| 321 | #define MSG_WAITFORONE	0x10000	/* recvmmsg(): block until 1+ packets avail */ | 
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| 322 | #define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */ | 
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| 323 | #define MSG_BATCH	0x40000 /* sendmmsg(): more messages coming */ | 
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| 324 | #define MSG_EOF         MSG_FIN | 
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| 325 | #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */ | 
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| 326 | #define MSG_SENDPAGE_DECRYPTED	0x100000 /* sendpage() internal : page may carry | 
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| 327 | * plain text and require encryption | 
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| 328 | */ | 
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| 329 |  | 
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| 330 | #define MSG_SOCK_DEVMEM 0x2000000	/* Receive devmem skbs as cmsg */ | 
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| 331 | #define MSG_ZEROCOPY	0x4000000	/* Use user data in kernel path */ | 
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| 332 | #define MSG_SPLICE_PAGES 0x8000000	/* Splice the pages from the iterator in sendmsg() */ | 
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| 333 | #define MSG_FASTOPEN	0x20000000	/* Send data in TCP SYN */ | 
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| 334 | #define MSG_CMSG_CLOEXEC 0x40000000	/* Set close_on_exec for file | 
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| 335 | descriptor received through | 
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| 336 | SCM_RIGHTS */ | 
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| 337 | #if defined(CONFIG_COMPAT) | 
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| 338 | #define MSG_CMSG_COMPAT	0x80000000	/* This message needs 32 bit fixups */ | 
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| 339 | #else | 
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| 340 | #define MSG_CMSG_COMPAT	0		/* We never have 32 bit fixups */ | 
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| 341 | #endif | 
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| 342 |  | 
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| 343 | /* Flags to be cleared on entry by sendmsg and sendmmsg syscalls */ | 
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| 344 | #define MSG_INTERNAL_SENDMSG_FLAGS \ | 
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| 345 | (MSG_SPLICE_PAGES | MSG_SENDPAGE_NOPOLICY | MSG_SENDPAGE_DECRYPTED) | 
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| 346 |  | 
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| 347 | /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ | 
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| 348 | #define SOL_IP		0 | 
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| 349 | /* #define SOL_ICMP	1	No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ | 
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| 350 | #define SOL_TCP		6 | 
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| 351 | #define SOL_UDP		17 | 
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| 352 | #define SOL_IPV6	41 | 
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| 353 | #define SOL_ICMPV6	58 | 
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| 354 | #define SOL_SCTP	132 | 
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| 355 | #define SOL_UDPLITE	136     /* UDP-Lite (RFC 3828) */ | 
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| 356 | #define SOL_RAW		255 | 
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| 357 | #define SOL_IPX		256 | 
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| 358 | #define SOL_AX25	257 | 
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| 359 | #define SOL_ATALK	258 | 
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| 360 | #define SOL_NETROM	259 | 
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| 361 | #define SOL_ROSE	260 | 
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| 362 | #define SOL_DECNET	261 | 
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| 363 | #define	SOL_X25		262 | 
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| 364 | #define SOL_PACKET	263 | 
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| 365 | #define SOL_ATM		264	/* ATM layer (cell level) */ | 
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| 366 | #define SOL_AAL		265	/* ATM Adaption Layer (packet level) */ | 
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| 367 | #define SOL_IRDA        266 | 
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| 368 | #define SOL_NETBEUI	267 | 
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| 369 | #define SOL_LLC		268 | 
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| 370 | #define SOL_DCCP	269 | 
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| 371 | #define SOL_NETLINK	270 | 
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| 372 | #define SOL_TIPC	271 | 
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| 373 | #define SOL_RXRPC	272 | 
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| 374 | #define SOL_PPPOL2TP	273 | 
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| 375 | #define SOL_BLUETOOTH	274 | 
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| 376 | #define SOL_PNPIPE	275 | 
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| 377 | #define SOL_RDS		276 | 
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| 378 | #define SOL_IUCV	277 | 
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| 379 | #define SOL_CAIF	278 | 
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| 380 | #define SOL_ALG		279 | 
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| 381 | #define SOL_NFC		280 | 
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| 382 | #define SOL_KCM		281 | 
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| 383 | #define SOL_TLS		282 | 
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| 384 | #define SOL_XDP		283 | 
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| 385 | #define SOL_MPTCP	284 | 
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| 386 | #define SOL_MCTP	285 | 
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| 387 | #define SOL_SMC		286 | 
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| 388 | #define SOL_VSOCK	287 | 
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| 389 |  | 
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| 390 | /* IPX options */ | 
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| 391 | #define IPX_TYPE	1 | 
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| 392 |  | 
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| 393 | extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr); | 
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| 394 | extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); | 
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| 395 | extern int put_cmsg_notrunc(struct msghdr *msg, int level, int type, int len, | 
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| 396 | void *data); | 
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| 397 |  | 
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| 398 | struct timespec64; | 
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| 399 | struct __kernel_timespec; | 
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| 400 | struct old_timespec32; | 
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| 401 |  | 
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| 402 | struct scm_timestamping_internal { | 
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| 403 | struct timespec64 ts[3]; | 
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| 404 | }; | 
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| 405 |  | 
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| 406 | extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss); | 
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| 407 | extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss); | 
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| 408 |  | 
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| 409 | /* The __sys_...msg variants allow MSG_CMSG_COMPAT iff | 
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| 410 | * forbid_cmsg_compat==false | 
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| 411 | */ | 
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| 412 | extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, | 
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| 413 | unsigned int flags, bool forbid_cmsg_compat); | 
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| 414 | extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, | 
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| 415 | unsigned int flags, bool forbid_cmsg_compat); | 
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| 416 | extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, | 
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| 417 | unsigned int vlen, unsigned int flags, | 
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| 418 | struct __kernel_timespec __user *timeout, | 
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| 419 | struct old_timespec32 __user *timeout32); | 
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| 420 | extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, | 
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| 421 | unsigned int vlen, unsigned int flags, | 
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| 422 | bool forbid_cmsg_compat); | 
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| 423 | extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg, | 
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| 424 | unsigned int flags); | 
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| 425 | extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg, | 
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| 426 | struct user_msghdr __user *umsg, | 
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| 427 | struct sockaddr __user *uaddr, | 
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| 428 | unsigned int flags); | 
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| 429 | extern int __copy_msghdr(struct msghdr *kmsg, | 
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| 430 | struct user_msghdr *umsg, | 
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| 431 | struct sockaddr __user **save_addr); | 
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| 432 |  | 
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| 433 | /* helpers which do the actual work for syscalls */ | 
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| 434 | extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size, | 
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| 435 | unsigned int flags, struct sockaddr __user *addr, | 
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| 436 | int __user *addr_len); | 
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| 437 | extern int __sys_sendto(int fd, void __user *buff, size_t len, | 
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| 438 | unsigned int flags, struct sockaddr __user *addr, | 
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| 439 | int addr_len); | 
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| 440 | extern struct file *do_accept(struct file *file, struct proto_accept_arg *arg, | 
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| 441 | struct sockaddr __user *upeer_sockaddr, | 
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| 442 | int __user *upeer_addrlen, int flags); | 
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| 443 | extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, | 
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| 444 | int __user *upeer_addrlen, int flags); | 
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| 445 | extern int __sys_socket(int family, int type, int protocol); | 
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| 446 | extern struct file *__sys_socket_file(int family, int type, int protocol); | 
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| 447 | extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); | 
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| 448 | extern int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address, | 
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| 449 | int addrlen); | 
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| 450 | extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr, | 
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| 451 | int addrlen, int file_flags); | 
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| 452 | extern int __sys_connect(int fd, struct sockaddr __user *uservaddr, | 
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| 453 | int addrlen); | 
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| 454 | extern int __sys_listen(int fd, int backlog); | 
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| 455 | extern int __sys_listen_socket(struct socket *sock, int backlog); | 
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| 456 | extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, | 
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| 457 | int __user *usockaddr_len); | 
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| 458 | extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, | 
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| 459 | int __user *usockaddr_len); | 
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| 460 | extern int __sys_socketpair(int family, int type, int protocol, | 
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| 461 | int __user *usockvec); | 
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| 462 | extern int __sys_shutdown_sock(struct socket *sock, int how); | 
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| 463 | extern int __sys_shutdown(int fd, int how); | 
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| 464 | #endif /* _LINUX_SOCKET_H */ | 
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| 465 |  | 
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