mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 12:14:18 +00:00
25 lines
595 B
C
25 lines
595 B
C
#define _GNU_SOURCE
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include "syscall.h"
|
|
|
|
int __dup3(int old, int new, int flags)
|
|
{
|
|
int r;
|
|
#ifdef SYS_dup2
|
|
if (old==new) return __syscall_ret(-EINVAL);
|
|
if (flags & O_CLOEXEC) {
|
|
while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
|
|
if (r!=-ENOSYS) return __syscall_ret(r);
|
|
}
|
|
while ((r=__syscall(SYS_dup2, old, new))==-EBUSY);
|
|
if (flags & O_CLOEXEC) __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
|
|
#else
|
|
while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
|
|
#endif
|
|
return __syscall_ret(r);
|
|
}
|
|
|
|
weak_alias(__dup3, dup3);
|