| Index: fusl/src/unistd/dup3.c
|
| diff --git a/fusl/src/unistd/dup3.c b/fusl/src/unistd/dup3.c
|
| index 0eb6caf59e6e1b0015b231632b6c20f879c5ad95..1a694a701b0ab3d841eb8c7c8d05476207e13f40 100644
|
| --- a/fusl/src/unistd/dup3.c
|
| +++ b/fusl/src/unistd/dup3.c
|
| @@ -5,21 +5,26 @@
|
| #include "syscall.h"
|
| #include "libc.h"
|
|
|
| -int __dup3(int old, int new, int flags)
|
| -{
|
| - int r;
|
| +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);
|
| + 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);
|
| + while ((r = __syscall(SYS_dup3, old, new, flags)) == -EBUSY)
|
| + ;
|
| #endif
|
| - return __syscall_ret(r);
|
| + return __syscall_ret(r);
|
| }
|
|
|
| weak_alias(__dup3, dup3);
|
|
|