userspace/libc: add <sys/socket.h> for socket programming support

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/libc/include/sys/socket.h

@@ -0,0 +1,156 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SYS_SOCKET_H
+#define _SYS_SOCKET_H
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+
+typedef uint32_t socklen_t;
+typedef unsigned int sa_family_t;
+
+struct sockaddr
+{
+	sa_family_t sa_family;
+	char sa_data[14];
+};
+
+#define _SS_MAXSIZE 128
+#define _SS_ALIGNSIZE (sizeof(int64_t))
+#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(sa_family_t))
+#define _SS_PAD2SIZE (_SS_MAXSIZE - (sizeof(sa_family_t) + _SS_PAD1SIZE + _SS_ALIGNSIZE))
+
+struct sockaddr_storage
+{
+	sa_family_t ss_family;
+	char _ss_pad1[_SS_PAD1SIZE];
+	int64_t _ss_align;
+	char _ss_pad2[_SS_PAD2SIZE];
+};
+
+struct msghdr
+{
+	void *msg_name;
+	socklen_t msg_namelen;
+	struct iovec *msg_iov;
+	int msg_iovlen;
+	void *msg_control;
+	socklen_t msg_controllen;
+	int msg_flags;
+};
+
+struct cmsghdr
+{
+	socklen_t cmsg_len;
+	int cmsg_level;
+	int cmsg_type;
+};
+
+struct linger
+{
+	int l_onoff;
+	int l_linger;
+};
+
+#define SOCK_DGRAM 1
+#define SOCK_RAW 2
+#define SOCK_SEQPACKET 3
+#define SOCK_STREAM 4
+#define SOCK_NONBLOCK 0x800
+#define SOCK_CLOEXEC 0x80000
+#define SOCK_CLOFORK 0x100000
+
+#define SOL_SOCKET 1
+
+#define SO_ACCEPTCONN 1
+#define SO_BROADCAST 2
+#define SO_DEBUG 3
+#define SO_DOMAIN 4
+#define SO_DONTROUTE 5
+#define SO_ERROR 6
+#define SO_KEEPALIVE 7
+#define SO_LINGER 8
+#define SO_OOBINLINE 9
+#define SO_PROTOCOL 10
+#define SO_RCVBUF 11
+#define SO_RCVLOWAT 12
+#define SO_RCVTIMEO 13
+#define SO_REUSEADDR 14
+#define SO_SNDBUF 15
+#define SO_SNDLOWAT 16
+#define SO_SNDTIMEO 17
+#define SO_TYPE 18
+
+#define SOMAXCONN 128
+
+#define MSG_CMSG_CLOEXEC 0x01
+#define MSG_CMSG_CLOFORK 0x02
+#define MSG_CTRUNC 0x08
+#define MSG_DONTROUTE 0x04
+#define MSG_EOR 0x80
+#define MSG_OOB 0x01
+#define MSG_NOSIGNAL 0x4000
+#define MSG_PEEK 0x02
+#define MSG_TRUNC 0x20
+#define MSG_WAITALL 0x100
+
+#define AF_INET 2
+#define AF_INET6 10
+#define AF_UNIX 1
+#define AF_UNSPEC 0
+
+#define SHUT_RD 0
+#define SHUT_RDWR 2
+#define SHUT_WR 1
+
+#define SCM_RIGHTS 0x01
+
+#define CMSG_DATA(cmsg) ((unsigned char *)((struct cmsghdr *)(cmsg) + 1))
+#define CMSG_NXTHDR(mhdr, cmsg)                                                \
+	(((char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len) + sizeof(struct cmsghdr) > \
+	  (char *)((mhdr)->msg_control) + (mhdr)->msg_controllen)                  \
+		 ? (struct cmsghdr *)NULL                                              \
+		 : (struct cmsghdr *)((char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len)))
+#define CMSG_FIRSTHDR(mhdr) \
+	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? (struct cmsghdr *)((mhdr)->msg_control) : (struct cmsghdr *)NULL)
+#define CMSG_ALIGN(len) (((len) + sizeof(long) - 1) & ~(sizeof(long) - 1))
+#define CMSG_SPACE(len) (CMSG_ALIGN(len) + CMSG_ALIGN(sizeof(struct cmsghdr)))
+#define CMSG_LEN(len) (CMSG_ALIGN(len) + sizeof(struct cmsghdr))
+
+int accept(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);
+int accept4(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len, int flag);
+int bind(int socket, const struct sockaddr *address, socklen_t address_len);
+int connect(int socket, const struct sockaddr *address, socklen_t address_len);
+int getpeername(int, struct sockaddr *restrict, socklen_t *restrict);
+int getsockname(int, struct sockaddr *restrict, socklen_t *restrict);
+int getsockopt(int, int, int, void *restrict, socklen_t *restrict);
+int listen(int socket, int backlog);
+ssize_t recv(int, void *, size_t, int);
+ssize_t recvfrom(int, void *restrict, size_t, int, struct sockaddr *restrict, socklen_t *restrict);
+ssize_t recvmsg(int, struct msghdr *, int);
+ssize_t send(int, const void *, size_t, int);
+ssize_t sendmsg(int, const struct msghdr *, int);
+ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *, socklen_t);
+int setsockopt(int, int, int, const void *, socklen_t);
+int shutdown(int, int);
+int sockatmark(int);
+int socket(int domain, int type, int protocol);
+int socketpair(int, int, int, int[2]);
+
+#endif // _SYS_SOCKET_H

Userspace/libc/src/std/sys/socket.c

@@ -0,0 +1,63 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <sys/socket.h>
+#include <errno.h>
+#include <fennix/syscalls.h>
+
+export int accept(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len)
+{
+	return __check_errno(call_accept(socket, address, address_len), -1);
+}
+
+export int accept4(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len, int flag);
+
+export int bind(int socket, const struct sockaddr *address, socklen_t address_len)
+{
+	return __check_errno(call_bind(socket, address, address_len), -1);
+}
+
+export int connect(int socket, const struct sockaddr *address, socklen_t address_len)
+{
+	return __check_errno(call_connect(socket, address, address_len), -1);
+}
+
+export int getpeername(int, struct sockaddr *restrict, socklen_t *restrict);
+export int getsockname(int, struct sockaddr *restrict, socklen_t *restrict);
+export int getsockopt(int, int, int, void *restrict, socklen_t *restrict);
+
+export int listen(int socket, int backlog)
+{
+	return __check_errno(call_listen(socket, backlog), -1);
+}
+
+export ssize_t recv(int, void *, size_t, int);
+export ssize_t recvfrom(int, void *restrict, size_t, int, struct sockaddr *restrict, socklen_t *restrict);
+export ssize_t recvmsg(int, struct msghdr *, int);
+export ssize_t send(int, const void *, size_t, int);
+export ssize_t sendmsg(int, const struct msghdr *, int);
+export ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *, socklen_t);
+export int setsockopt(int, int, int, const void *, socklen_t);
+export int shutdown(int, int);
+export int sockatmark(int);
+
+export int socket(int domain, int type, int protocol)
+{
+	return __check_errno(call_socket(domain, type, protocol), -1);
+}
+
+export int socketpair(int, int, int, int[2]);