diff options
Diffstat (limited to 'lib/libc/gen/dup3.c')
| -rw-r--r-- | lib/libc/gen/dup3.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/libc/gen/dup3.c b/lib/libc/gen/dup3.c index fca1e99fb47b..1401c1f5b607 100644 --- a/lib/libc/gen/dup3.c +++ b/lib/libc/gen/dup3.c @@ -39,21 +39,22 @@ int __dup3(int, int, int); int __dup3(int oldfd, int newfd, int flags) { - int how; + int fdflags; if (oldfd == newfd) { errno = EINVAL; return (-1); } - if (flags & ~O_CLOEXEC) { + if ((flags & ~(O_CLOEXEC | O_CLOFORK)) != 0) { errno = EINVAL; return (-1); } - how = (flags & O_CLOEXEC) ? F_DUP2FD_CLOEXEC : F_DUP2FD; + fdflags = ((flags & O_CLOEXEC) != 0 ? FD_CLOEXEC : 0) | + ((flags & O_CLOFORK) != 0 ? FD_CLOFORK : 0); - return (_fcntl(oldfd, how, newfd)); + return (_fcntl(oldfd, F_DUP3FD | (fdflags << F_DUP3FD_SHIFT), newfd)); } __weak_reference(__dup3, dup3); |