Add SCML for accept and accept4

book/src/kernel/linux-compatibility/README.md

@@ -63,7 +63,7 @@ which are summarized in the table below.
 | 40      | sendfile               | ✅             | 💯 |
 | 41      | socket                 | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#socket) |
 | 42      | connect                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#connect) |
-| 43      | accept                 | ✅             | ❓ |
+| 43      | accept                 | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#accept-and-accept4) |
 | 44      | sendto                 | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#sendto-sendmsg-and-sendmmsg) |
 | 45      | recvfrom               | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#recvfrom-and-recvmsg) |
 | 46      | sendmsg                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#sendto-sendmsg-and-sendmmsg) |
@@ -308,7 +308,7 @@ which are summarized in the table below.
 | 285     | fallocate              | ✅             | ❓ |
 | 286     | timerfd_settime        | ✅             | [⚠️](syscall-flag-coverage/signals-and-timers/#timerfd_settime) |
 | 287     | timerfd_gettime        | ✅             | 💯 |
-| 288     | accept4                | ✅             | ❓ |
+| 288     | accept4                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#accept-and-accept4) |
 | 289     | signalfd4              | ✅             | 💯 |
 | 290     | eventfd2               | ✅             | [⚠️](syscall-flag-coverage/file-descriptor-and-io-control/#eventfd-and-eventfd2) |
 | 291     | epoll_create1          | ✅             | 💯 |

book/src/kernel/linux-compatibility/syscall-flag-coverage/networking-and-sockets/README.md

@@ -57,6 +57,17 @@ Supported functionality in SCML:
 For more information,
 see [the man page](https://man7.org/linux/man-pages/man2/connect.2.html).
 
+### `accept` and `accept4`
+
+Supported functionality in SCML:
+
+```c
+{{#include accept_and_accept4.scml}}
+```
+
+For more information,
+see [the man page](https://man7.org/linux/man-pages/man2/accept.2.html).
+
 ## Socket Communication
 
 ### `sendto`, `sendmsg` and `sendmmsg`

book/src/kernel/linux-compatibility/syscall-flag-coverage/networking-and-sockets/accept_and_accept4.scml

@@ -0,0 +1,15 @@
+struct sockaddr = {
+    sa_family = AF_INET | AF_UNIX | AF_VSOCK,
+    ..
+};
+
+// Accept an incoming connection
+accept(
+    sockfd, addr = <sockaddr>, addrlen
+);
+
+// Accept an incoming connection and set flags for the new socket
+accept4(
+    sockfd, addr = <sockaddr>, addrlen,
+    flags = SOCK_NONBLOCK | SOCK_CLOEXEC
+);