[Buildroot] [git commit branch/2020.02.x] package/libssh: add patch to fix regression
From: Peter Korsgaard <peter@korsgaard.com>
Date: 2020-05-06 05:03:34
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> (cherry picked from commit 39099153d9404cd6f107f0fd92ce8686bbd1beb2) Signed-off-by: Peter Korsgaard <peter@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@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@redhat.com> +Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com> + +[Backport from upstream commit: +6417f5a3cac8537ac6f6ff7fc1642dfaa0917fb4] +Signed-off-by: Heiko Thiery <heiko.thiery@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 +