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13c51549e2
The recvmsg handling is more complicated because it requires check the returned kernel control message and make some convertions. For !__ASSUME_TIME64_SYSCALLS it converts the first 32-bit time SO_TIMESTAMP or SO_TIMESTAMPNS and appends it to the control buffer if has extra space or returns MSG_CTRUNC otherwise. The 32-bit time field is kept as-is. Calls with __TIMESIZE=32 will see the converted 64-bit time control messages as spurious control message of unknown type. Calls with __TIMESIZE=64 running on pre-time64 kernels will see the original message as a spurious control ones of unknown typ while running on kernel with native 64-bit time support will only see the time64 version of the control message. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
174 lines
7.1 KiB
C
174 lines
7.1 KiB
C
#ifndef _SYS_SOCKET_H
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#include <socket/sys/socket.h>
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#ifndef _ISOMAC
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/* Now define the internal interfaces. */
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/* Create a new socket of type TYPE in domain DOMAIN, using
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protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically.
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Returns a file descriptor for the new socket, or -1 for errors. */
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extern int __socket (int __domain, int __type,
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int __protocol);
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libc_hidden_proto (__socket)
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/* Create two new sockets, of type TYPE in domain DOMAIN and using
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protocol PROTOCOL, which are connected to each other, and put file
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descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
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one will be chosen automatically. Returns 0 on success, -1 for errors. */
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extern int __socketpair (int __domain, int __type, int __protocol,
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int __fds[2]) attribute_hidden;
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/* Return a socket of any type. The socket can be used in subsequent
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ioctl calls to talk to the kernel. */
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extern int __opensock (void) attribute_hidden;
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/* Put the address of the peer connected to socket FD into *ADDR
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(which is *LEN bytes long), and its actual length into *LEN. */
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extern int __getpeername (int __fd, __SOCKADDR_ARG __addr,
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socklen_t *__len) attribute_hidden;
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/* Send N bytes of BUF to socket FD. Returns the number sent or -1. */
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extern ssize_t __libc_send (int __fd, const void *__buf, size_t __n,
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int __flags);
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extern ssize_t __send (int __fd, const void *__buf, size_t __n, int __flags);
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libc_hidden_proto (__send)
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/* Read N bytes into BUF from socket FD.
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Returns the number read or -1 for errors. */
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extern ssize_t __libc_recv (int __fd, void *__buf, size_t __n, int __flags);
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/* Send N bytes of BUF on socket FD to peer at address ADDR (which is
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ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */
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extern ssize_t __libc_sendto (int __fd, const void *__buf, size_t __n,
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int __flags, __CONST_SOCKADDR_ARG __addr,
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socklen_t __addr_len);
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/* Read N bytes into BUF through socket FD.
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If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
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the sender, and store the actual size of the address in *ADDR_LEN.
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Returns the number of bytes read or -1 for errors. */
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extern ssize_t __libc_recvfrom (int __fd, void *__restrict __buf, size_t __n,
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int __flags, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len);
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/* Open a connection on socket FD to peer at ADDR (which LEN bytes long).
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For connectionless socket types, just set the default address to send to
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and the only address from which to accept transmissions.
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Return 0 on success, -1 for errors. */
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extern int __libc_connect (int __fd, __CONST_SOCKADDR_ARG __addr,
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socklen_t __len);
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extern int __connect (int __fd, __CONST_SOCKADDR_ARG __addr, socklen_t __len);
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libc_hidden_proto (__connect)
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/* Read N bytes into BUF from socket FD.
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Returns the number read or -1 for errors.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern ssize_t __recv (int __fd, void *__buf, size_t __n, int __flags);
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libc_hidden_proto (__recv)
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/* Send N bytes of BUF on socket FD to peer at address ADDR (which is
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ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */
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extern ssize_t __libc_sendto (int __fd, const void *__buf, size_t __n,
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int __flags, __CONST_SOCKADDR_ARG __addr,
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socklen_t __addr_len);
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extern ssize_t __sendto (int __fd, const void *__buf, size_t __n,
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int __flags, __CONST_SOCKADDR_ARG __addr,
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socklen_t __addr_len) attribute_hidden;
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/* Read N bytes into BUF through socket FD.
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If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
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the sender, and store the actual size of the address in *ADDR_LEN.
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Returns the number of bytes read or -1 for errors. */
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extern ssize_t __recvfrom (int __fd, void *__restrict __buf, size_t __n,
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int __flags, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len) attribute_hidden;
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/* Send a message described MESSAGE on socket FD.
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Returns the number of bytes sent, or -1 for errors. */
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extern ssize_t __libc_sendmsg (int __fd, const struct msghdr *__message,
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int __flags);
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extern ssize_t __sendmsg (int __fd, const struct msghdr *__message,
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int __flags) attribute_hidden;
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#ifdef __USE_GNU
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extern int __sendmmsg (int __fd, struct mmsghdr *__vmessages,
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unsigned int __vlen, int __flags);
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libc_hidden_proto (__sendmmsg)
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#endif
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/* Receive a message as described by MESSAGE from socket FD.
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Returns the number of bytes read or -1 for errors. */
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extern ssize_t __libc_recvmsg (int __fd, struct msghdr *__message,
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int __flags);
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extern ssize_t __recvmsg (int __fd, struct msghdr *__message,
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int __flags) attribute_hidden;
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#if __TIMESIZE == 64
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# define __recvmmsg64 __recvmmsg
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#else
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extern int __recvmmsg64 (int __fd, struct mmsghdr *vmessages,
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unsigned int vlen, int flags,
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struct __timespec64 *timeout);
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libc_hidden_proto (__recvmmsg64)
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#endif
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/* Set socket FD's option OPTNAME at protocol level LEVEL
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to *OPTVAL (which is OPTLEN bytes long).
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Returns 0 on success, -1 for errors. */
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extern int __setsockopt (int __fd, int __level, int __optname,
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const void *__optval,
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socklen_t __optlen) attribute_hidden;
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/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL
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into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's
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actual length. Returns 0 on success, -1 for errors. */
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extern int __getsockopt (int __fd, int __level, int __optname,
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void *__restrict __optval,
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socklen_t *__restrict __optlen) attribute_hidden;
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/* Put the local address of FD into *ADDR and its length in *LEN. */
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extern int __getsockname (int __fd, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __len) attribute_hidden;
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/* Give the socket FD the local address ADDR (which is LEN bytes long). */
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extern int __bind (int __fd, __CONST_SOCKADDR_ARG __addr,
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socklen_t __len) attribute_hidden;
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/* Prepare to accept connections on socket FD.
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N connection requests will be queued before further requests are refused.
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Returns 0 on success, -1 for errors. */
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extern int __listen (int __fd, int __n) attribute_hidden;
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/* Await a connection on socket FD.
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When a connection arrives, open a new socket to communicate with it,
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set *ADDR (which is *ADDR_LEN bytes long) to the address of the connecting
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peer and *ADDR_LEN to the address's actual length, and return the
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new socket's descriptor, or -1 for errors. */
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extern int __libc_accept (int __fd, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len)
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__THROW attribute_hidden;
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libc_hidden_proto (accept)
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extern int __libc_accept4 (int __fd, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len, int __flags)
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__THROW attribute_hidden;
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/* Return the length of a `sockaddr' structure. */
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#ifdef _HAVE_SA_LEN
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# define SA_LEN(_x) (_x)->sa_len
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#else
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extern int __libc_sa_len (sa_family_t __af);
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libc_hidden_proto (__libc_sa_len)
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# define SA_LEN(_x) __libc_sa_len((_x)->sa_family)
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#endif
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libc_hidden_proto (__cmsg_nxthdr)
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#ifndef __ASSUME_TIME64_SYSCALLS
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extern void __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize)
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attribute_hidden;
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#endif
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#endif
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#endif
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