File boo1186786-0001-forkexec-handle-broken-close_range-backport-in-openS.patch of Package lxd.openSUSE_Leap_15.2_Update
From a0c04ef1b99c94edb50084825365c2bab8dadb7c Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Thu, 17 Jun 2021 12:45:25 +0200
Subject: [PATCH] forkexec: handle broken close_range() backport in openSUSE
Leap 15.3
Fixes: https://discuss.linuxcontainers.org/t/lxc-exec-results-in-error-failed-to-retrieve-pid-of-executing-child-process
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
lxd/main_forkexec.go | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lxd/main_forkexec.go b/lxd/main_forkexec.go
index 7cc5e8d7130c..574f25eeb988 100644
--- a/lxd/main_forkexec.go
+++ b/lxd/main_forkexec.go
@@ -292,7 +292,12 @@ __attribute__ ((noinline)) static int __forkexec(void)
ret = close_range(EXEC_PIPE_FD + 1, UINT_MAX, CLOSE_RANGE_UNSHARE);
if (ret) {
- if (errno == ENOSYS)
+ // Fallback to close_inherited() when the syscall is not
+ // available or when CLOSE_RANGE_UNSHARE isn't supported.
+ // On a regular kernel CLOSE_RANGE_UNSHARE should always be
+ // available but openSUSE Leap 15.3 seems to have a partial
+ // backport without CLOSE_RANGE_UNSHARE support.
+ if (errno == ENOSYS || errno == EINVAL)
ret = close_inherited(fds_to_ignore, ARRAY_SIZE(fds_to_ignore));
}
if (ret)
--
2.32.0
