[Buildroot] [git commit branch/2020.02.x] package/libssh: add patch to fix regression
Peter Korsgaard
peter at korsgaard.com
Wed May 6 05:03:34 UTC 2020
commit: https://git.buildroot.net/buildroot/commit/?id=1d177afefce7b655f7a240c7c85cbccddab6d0df
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2020.02.x
The libssh server is used by libnetconf2. With libssh version 0.9.4 a
regression was introduced that wrongly leads to session closed after the
poll timeout.
The patch comes from upstrem:
https://git.libssh.org/projects/libssh.git/commit/?id=6417f5a3cac8537ac6f6ff7fc1642dfaa0917fb4
Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
(cherry picked from commit 39099153d9404cd6f107f0fd92ce8686bbd1beb2)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
...oid-returning-SSH_AGAIN-from-ssh_channel_.patch | 45 ++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/package/libssh/0002-channels-Avoid-returning-SSH_AGAIN-from-ssh_channel_.patch b/package/libssh/0002-channels-Avoid-returning-SSH_AGAIN-from-ssh_channel_.patch
new file mode 100644
index 0000000000..9cc9389479
--- /dev/null
+++ b/package/libssh/0002-channels-Avoid-returning-SSH_AGAIN-from-ssh_channel_.patch
@@ -0,0 +1,45 @@
+From 6417f5a3cac8537ac6f6ff7fc1642dfaa0917fb4 Mon Sep 17 00:00:00 2001
+From: Jakub Jelen <jjelen at redhat.com>
+Date: Thu, 16 Apr 2020 11:13:34 +0200
+Subject: [PATCH] channels: Avoid returning SSH_AGAIN from
+ ssh_channel_poll_timeout()
+
+This addresses a regression introduced in 3bad0607, partially fixed in 022409e9,
+but the function was still able to return SSH_AGAIN, which was not expected by
+callers.
+
+Based on discussion in [1] and [2]
+
+[1] https://gitlab.com/libssh/libssh-mirror/-/merge_requests/101
+[2] https://www.libssh.org/archive/libssh/2020-03/0000029.html
+
+Signed-off-by: Jakub Jelen <jjelen at redhat.com>
+Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki at redhat.com>
+
+[Backport from upstream commit:
+6417f5a3cac8537ac6f6ff7fc1642dfaa0917fb4]
+Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>
+---
+ src/channels.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/src/channels.c b/src/channels.c
+index bcc1c207..9fe309d0 100644
+--- a/src/channels.c
++++ b/src/channels.c
+@@ -3116,6 +3116,12 @@ int ssh_channel_poll_timeout(ssh_channel channel, int timeout, int is_stderr)
+ session->session_state == SSH_SESSION_STATE_ERROR) {
+ rc = SSH_ERROR;
+ goto out;
++ } else if (rc == SSH_AGAIN) {
++ /* If the above timeout expired, it is ok and we do not need to
++ * attempt to check the read buffer. The calling functions do not
++ * expect us to return SSH_AGAIN either here. */
++ rc = SSH_OK;
++ goto out;
+ }
+ len = ssh_buffer_get_len(stdbuf);
+ if (len > 0) {
+--
+2.20.1
+
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