termux-packages/packages/openssh/hostfile.c.patch
Fredrik Fornwall 2b61e3a317 openssh: Replace some link(2) with rename(2)
OpenSSH uses a link to take a backup while replacing the known_hosts
file:

(1) link known_hosts to known_hosts.old
(2) move new file to known_hosts (overwriting the link there)

Since links are not allowed we replace link with rename:

(1) rename known_hosts to known_hosts.old
(2) move new file to known_hosts

This means that there is a window between (1) and (2) where the
known_hosts file is not available, but that is a really short window
and is hopefully acceptable here.

Fixes #2909.
2018-09-29 10:40:18 +02:00

16 lines
470 B
Diff

diff -u -r ../openssh-7.8p1/hostfile.c ./hostfile.c
--- ../openssh-7.8p1/hostfile.c 2018-08-23 05:41:42.000000000 +0000
+++ ./hostfile.c 2018-09-29 08:21:44.261152558 +0000
@@ -603,7 +603,11 @@
r = SSH_ERR_SYSTEM_ERROR;
goto fail;
}
+#ifdef __ANDROID__
+ if (rename(filename, back) == -1) {
+#else
if (link(filename, back) == -1) {
+#endif
oerrno = errno;
error("%s: link %.100s to %.100s: %s", __func__,
filename, back, strerror(errno));