From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:00 -0500
Subject: lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/mlibc/options/posix/include/sys/socket.h | 105 +++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 lib/mlibc/options/posix/include/sys/socket.h

(limited to 'lib/mlibc/options/posix/include/sys/socket.h')

diff --git a/lib/mlibc/options/posix/include/sys/socket.h b/lib/mlibc/options/posix/include/sys/socket.h
new file mode 100644
index 0000000..9552f93
--- /dev/null
+++ b/lib/mlibc/options/posix/include/sys/socket.h
@@ -0,0 +1,105 @@
+
+#ifndef _SOCKET_H
+#define _SOCKET_H
+
+#include <abi-bits/gid_t.h>
+#include <abi-bits/pid_t.h>
+#include <bits/size_t.h>
+#include <abi-bits/socklen_t.h>
+#include <bits/ssize_t.h>
+#include <abi-bits/uid_t.h>
+#include <bits/posix/iovec.h>
+#include <abi-bits/socket.h>
+#include <bits/ansi/time_t.h>
+#include <bits/ansi/timespec.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct sockaddr {
+	sa_family_t sa_family;
+	char sa_data[14];
+};
+
+// Control message format:
+// The offsets marked with ^ are aligned to alignof(size_t).
+//
+// |---HEADER---|---DATA---|---PADDING---|---HEADER---|...
+// ^            ^                        ^
+// |---------CMSG_LEN------|
+// |---------------CMSG_SPACE------------|
+
+// Auxiliary macro. While there is basically no reason for applications
+// to use this, it is exported by glibc.
+#define CMSG_ALIGN(s) (((s) + __alignof__(size_t) - 1) & \
+		~(__alignof__(size_t) - 1))
+
+// Basic macros to return content and padding size of a control message.
+#define CMSG_LEN(s) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (s))
+#define CMSG_SPACE(s) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(s))
+
+// Provides access to the data of a control message.
+#define CMSG_DATA(c) ((char *)(c) + CMSG_ALIGN(sizeof(struct cmsghdr)))
+
+#define __MLIBC_CMSG_NEXT(c) ((char *)(c) + CMSG_ALIGN((c)->cmsg_len))
+#define __MLIBC_MHDR_LIMIT(m) ((char *)(m)->msg_control + (m)->msg_controllen)
+
+// For parsing control messages only.
+// Returns a pointer to the first header or nullptr if there is none.
+#define CMSG_FIRSTHDR(m) ((size_t)(m)->msg_controllen <= sizeof(struct cmsghdr) \
+	? (struct cmsghdr *)0 : (struct cmsghdr *) (m)->msg_control)
+
+// For parsing control messages only.
+// Returns a pointer to the next header or nullptr if there is none.
+#define CMSG_NXTHDR(m, c) \
+	((c)->cmsg_len < sizeof(struct cmsghdr) || \
+		(ptrdiff_t)(sizeof(struct cmsghdr) + CMSG_ALIGN((c)->cmsg_len)) \
+			>= __MLIBC_MHDR_LIMIT(m) - (char *)(c) \
+	? (struct cmsghdr *)0 : (struct cmsghdr *)__MLIBC_CMSG_NEXT(c))
+
+struct linger{
+	int l_onoff;
+	int l_linger;
+};
+
+struct ucred {
+	pid_t pid;
+	uid_t uid;
+	gid_t gid;
+};
+
+#ifndef __MLIBC_ABI_ONLY
+
+int accept(int, struct sockaddr *__restrict, socklen_t *__restrict);
+int accept4(int, struct sockaddr *__restrict, socklen_t *__restrict, int);
+int bind(int, const struct sockaddr *, socklen_t);
+int connect(int, const struct sockaddr *, socklen_t);
+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, int);
+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 recvmmsg(int sockfd, struct mmsghdr *msgvec, unsigned int vlen, int flags, struct timespec *timeout);
+int sendmmsg(int sockfd, struct mmsghdr *msgvec, unsigned int vlen, int flags);
+int setsockopt(int, int, int, const void *, socklen_t);
+int shutdown(int, int);
+int sockatmark(int);
+int socket(int, int, int);
+int socketpair(int, int, int, int [2]);
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _UNISTD_H
+
-- 
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