1*c9945492SAndroid Build Coastguard Worker #define _GNU_SOURCE
2*c9945492SAndroid Build Coastguard Worker #include <unistd.h>
3*c9945492SAndroid Build Coastguard Worker #include <errno.h>
4*c9945492SAndroid Build Coastguard Worker #include <fcntl.h>
5*c9945492SAndroid Build Coastguard Worker #include "syscall.h"
6*c9945492SAndroid Build Coastguard Worker
__dup3(int old,int new,int flags)7*c9945492SAndroid Build Coastguard Worker int __dup3(int old, int new, int flags)
8*c9945492SAndroid Build Coastguard Worker {
9*c9945492SAndroid Build Coastguard Worker int r;
10*c9945492SAndroid Build Coastguard Worker #ifdef SYS_dup2
11*c9945492SAndroid Build Coastguard Worker if (old==new) return __syscall_ret(-EINVAL);
12*c9945492SAndroid Build Coastguard Worker if (flags) {
13*c9945492SAndroid Build Coastguard Worker while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
14*c9945492SAndroid Build Coastguard Worker if (r!=-ENOSYS) return __syscall_ret(r);
15*c9945492SAndroid Build Coastguard Worker if (flags & ~O_CLOEXEC) return __syscall_ret(-EINVAL);
16*c9945492SAndroid Build Coastguard Worker }
17*c9945492SAndroid Build Coastguard Worker while ((r=__syscall(SYS_dup2, old, new))==-EBUSY);
18*c9945492SAndroid Build Coastguard Worker if (r >= 0 && (flags & O_CLOEXEC))
19*c9945492SAndroid Build Coastguard Worker __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
20*c9945492SAndroid Build Coastguard Worker #else
21*c9945492SAndroid Build Coastguard Worker while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
22*c9945492SAndroid Build Coastguard Worker #endif
23*c9945492SAndroid Build Coastguard Worker return __syscall_ret(r);
24*c9945492SAndroid Build Coastguard Worker }
25*c9945492SAndroid Build Coastguard Worker
26*c9945492SAndroid Build Coastguard Worker weak_alias(__dup3, dup3);
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