diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/dup2.c (renamed from sysdeps/unix/sysv/linux/generic/dup2.c) | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/generic/dup2.c b/sysdeps/unix/sysv/linux/dup2.c index 0dc45e9..1182780 100644 --- a/sysdeps/unix/sysv/linux/generic/dup2.c +++ b/sysdeps/unix/sysv/linux/dup2.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2011-2022 Free Software Foundation, Inc. +/* Duplicate a file descriptor. Linux version. + Copyright (C) 2011-2022 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -24,12 +25,16 @@ int __dup2 (int fd, int fd2) { +#ifdef __NR_dup2 + return INLINE_SYSCALL_CALL (dup2, fd, fd2); +#else /* For the degenerate case, check if the fd is valid (by trying to get the file status flags) and return it, or else return EBADF. */ if (fd == fd2) return __libc_fcntl (fd, F_GETFL, 0) < 0 ? -1 : fd; - return INLINE_SYSCALL (dup3, 3, fd, fd2, 0); + return INLINE_SYSCALL_CALL (dup3, fd, fd2, 0); +#endif } libc_hidden_def (__dup2) weak_alias (__dup2, dup2) |