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glibc-compatibility: Add accept4() from musl 1.2.1.

This commit is contained in:
Vitaly Baranov 2020-11-14 08:20:39 +03:00
parent fc67aaec20
commit a61359c224
2 changed files with 25 additions and 0 deletions
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19
base/glibc-compatibility/musl/accept4.c Normal file
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@ -0,0 +1,19 @@
#define _GNU_SOURCE
#include <sys/socket.h>
#include <errno.h>
#include <fcntl.h>
#include "syscall.h"
int accept4(int fd, struct sockaddr *restrict addr, socklen_t *restrict len, int flg)
{
if (!flg) return accept(fd, addr, len);
int ret = socketcall_cp(accept4, fd, addr, len, flg, 0, 0);
if (ret>=0 || (errno != ENOSYS && errno != EINVAL)) return ret;
ret = accept(fd, addr, len);
if (ret<0) return ret;
if (flg & SOCK_CLOEXEC)
__syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
if (flg & SOCK_NONBLOCK)
__syscall(SYS_fcntl, ret, F_SETFL, O_NONBLOCK);
return ret;
}

6
base/glibc-compatibility/musl/syscall.h
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@ -15,3 +15,9 @@ __attribute__((visibility("hidden")))
void *__vdsosym(const char *, const char *);
#define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
#define socketcall(...) __syscall_ret(__socketcall(__VA_ARGS__))
#define __socketcall(nm,a,b,c,d,e,f) __syscall(SYS_##nm, a, b, c, d, e, f)
#define socketcall_cp socketcall