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Backport of:
From ce0eb088a68171eed3ac217cb92a72e36eb57d1b Mon Sep 17 00:00:00 2001
From: Philip Withnall <pwithnall@endlessos.org>
Date: Wed, 10 Mar 2021 16:05:55 +0000
Subject: [PATCH 3/5] glocalfileoutputstream: Factor out a flag check
This clarifies the code a little. It introduces no functional changes.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
CVE: CVE-2021-28153
Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
---
gio/glocalfileoutputstream.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/gio/glocalfileoutputstream.c
+++ b/gio/glocalfileoutputstream.c
@@ -847,6 +847,7 @@ handle_overwrite_open (const char *fi
int res;
int mode;
int errsv;
+ gboolean replace_destination_set = (flags & G_FILE_CREATE_REPLACE_DESTINATION);
mode = mode_from_flags_or_info (flags, reference_info);
@@ -954,7 +955,7 @@ handle_overwrite_open (const char *fi
* to a backup file and rewrite the contents of the file.
*/
- if ((flags & G_FILE_CREATE_REPLACE_DESTINATION) ||
+ if (replace_destination_set ||
(!(original_stat.st_nlink > 1) && !is_symlink))
{
char *dirname, *tmp_filename;
@@ -973,7 +974,7 @@ handle_overwrite_open (const char *fi
/* try to keep permissions (unless replacing) */
- if ( ! (flags & G_FILE_CREATE_REPLACE_DESTINATION) &&
+ if (!replace_destination_set &&
(
#ifdef HAVE_FCHOWN
fchown (tmpfd, original_stat.st_uid, original_stat.st_gid) == -1 ||
@@ -1112,7 +1113,7 @@ handle_overwrite_open (const char *fi
}
}
- if (flags & G_FILE_CREATE_REPLACE_DESTINATION)
+ if (replace_destination_set)
{
g_close (fd, NULL);
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