diff options
Diffstat (limited to 'libbb/xfuncs.c')
| -rw-r--r-- | libbb/xfuncs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c index c496f9a22..1dcdbc065 100644 --- a/libbb/xfuncs.c +++ b/libbb/xfuncs.c @@ -133,6 +133,16 @@ int ndelay_off(int fd) return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) & ~O_NONBLOCK); } +// "Renumber" opened fd +void xmove_fd(int from, int to) +{ + if (from == to) + return; + if (dup2(from, to) != to) + bb_perror_msg_and_die("cannot duplicate file descriptor"); + close(from); +} + // Die with an error message if we can't write the entire buffer. void xwrite(int fd, const void *buf, size_t count) { |