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Diffstat (limited to 'libbb')
-rw-r--r--libbb/xfuncs.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index c496f9a..1dcdbc0 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)
{