File openssh-7.9p1-keygen-preserve-perms.patch of Package openssh-testuser.32839

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File openssh-7.9p1-keygen-preserve-perms.patch of Package openssh-testuser.32839

From 1409e3f8e1a7435390edbaba533391989553969a Mon Sep 17 00:00:00 2001
From: Hans Petter Jansson <hpj@suse.com>
Date: Wed, 26 Oct 2022 10:00:50 +0200
Subject: [PATCH] openssh-7.9p1-keygen-preserve-perms

commit 07ffb49749c310b82e44278ae05e081d6f4a82bf
Author: Hans Petter Jansson <hpj@cl.no>
Date:   Fri Sep 27 01:57:16 2019 +0200

ssh-keygen: Preserve known_hosts permissions on rewrite

Transfer the permissions of the old known_hosts file instead of
    just going with what mkstemp() gives us. This is useful in corner
    cases where known_hosts is shared between users.
---
 ssh-keygen.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ssh-keygen.c b/ssh-keygen.c
index fc252d74..53186982 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -1274,6 +1274,11 @@ do_known_hosts(struct passwd *pw, const char *name)
 		if (inplace)
 			unlink(tmp);
 	} else if (inplace) {
+		struct stat st;
+
+		/* Get metadata for existing file */
+		r = stat(identity_file, &st);
+
 		/* Backup existing file */
 		if (unlink(old) == -1 && errno != ENOENT)
 			fatal("unlink %.100s: %s", old, strerror(errno));
@@ -1288,6 +1293,12 @@ do_known_hosts(struct passwd *pw, const char *name)
 			unlink(old);
 			exit(1);
 		}
+		/* Preserve permissions; non-critical */
+		if (r != -1)
+			r = chown(identity_file, st.st_uid, st.st_gid);
+		if (r != -1)
+			chmod(identity_file,
+			      st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));
 
 		printf("%s updated.\n", identity_file);
 		printf("Original contents retained as %s\n", old);
-- 
2.38.0

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File openssh-7.9p1-keygen-preserve-perms.patch of Package openssh-testuser.32839

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