Initial import

libc/sock/recv.c

@@ -0,0 +1,36 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program 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; version 2 of the License.                      │
+│                                                                              │
+│ This program 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 this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/sock/sock.h"
+
+/**
+ * Receives data from network socket.
+ *
+ * @param fd is the file descriptor returned by socket()
+ * @param buf is where received network data gets copied
+ * @param size is the byte capacity of buf
+ * @param flags can have MSG_{WAITALL,PEEK,OOB}, etc.
+ * @return number of bytes received, 0 on remote close, or -1 w/ errno
+ * @error EINTR, EHOSTUNREACH, ECONNRESET (UDP ICMP Port Unreachable),
+ *     EPIPE (if MSG_NOSIGNAL), EMSGSIZE, ENOTSOCK, EFAULT, etc.
+ * @asyncsignalsafe
+ */
+ssize_t recv(int fd, void *buf, size_t size, int flags) {
+  return recvfrom(fd, buf, size, flags, NULL, 0);
+}