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Resolves: #2077431 - Read-only files that have changed xattrs fail to allow xattr changes

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This commit is contained in:
Michal Ruprich 2022-04-22 15:20:56 +02:00
parent 0d92d49c8d
commit ec38219bd3
2 changed files with 44 additions and 1 deletions
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38
rsync-3.2.3-xattr.patch Normal file
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@ -0,0 +1,38 @@
diff --git a/xattrs.c b/xattrs.c
index 508649c0..3c549192 100644
--- a/xattrs.c
+++ b/xattrs.c
@@ -1055,7 +1055,7 @@ int set_xattr(const char *fname, const struct file_struct *file, const char *fna
{
rsync_xa_list *glst = rsync_xal_l.items;
item_list *lst;
- int ndx;
+ int ndx, added_write_perm = 0;
if (dry_run)
return 1; /* FIXME: --dry-run needs to compute this value */
@@ -1084,10 +1084,23 @@ int set_xattr(const char *fname, const struct file_struct *file, const char *fna
}
#endif
+ /* If the target file lacks write permission, we try to add it
+ * temporarily so we can change the extended attributes. */
+ if (!am_root
+#ifdef SUPPORT_LINKS
+ && !S_ISLNK(sxp->st.st_mode)
+#endif
+ && access(fname, W_OK) < 0
+ && do_chmod(fname, (sxp->st.st_mode & CHMOD_BITS) | S_IWUSR) == 0)
+ added_write_perm = 1;
+
ndx = F_XATTR(file);
glst += ndx;
lst = &glst->xa_items;
- return rsync_xal_set(fname, lst, fnamecmp, sxp);
+ int return_value = rsync_xal_set(fname, lst, fnamecmp, sxp);
+ if (added_write_perm) /* remove the temporary write permission */
+ do_chmod(fname, sxp->st.st_mode);
+ return return_value;
}
#ifdef SUPPORT_ACLS

7
rsync.spec
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@ -10,7 +10,7 @@
Summary: A program for synchronizing files over a network
Name: rsync
Version: 3.2.3
Release: 9%{?dist}
Release: 10%{?dist}
URL: https://rsync.samba.org/
Source0: https://download.samba.org/pub/rsync/src/rsync-%{version}%{?prerelease}.tar.gz
@ -35,6 +35,7 @@ Patch0: rsync-3.2.2-ssl-verify-hostname.patch
Patch1: rsync-3.2.2-runtests.patch
Patch2: rsync-3.2.3-lchmod.patch
Patch3: rsync-3.2.3-append-mode.patch
Patch4: rsync-3.2.3-xattr.patch
%description
Rsync uses a reliable algorithm to bring remote and host files into
@ -72,6 +73,7 @@ patch -p1 -i patches/copy-devices.diff
%patch1 -p1 -b .runtests
%patch2 -p1 -b .lchmod
%patch3 -p1 -b .append-mode
%patch4 -p1 -b .xattr
%build
%configure --disable-xxhash
@ -118,6 +120,9 @@ install -D -m644 %{SOURCE6} $RPM_BUILD_ROOT/%{_unitdir}/rsyncd@.service
%systemd_postun_with_restart rsyncd.service
%changelog
* Fri Apr 22 2022 Michal Ruprich <mruprich@redhat.com> - 3.2.3-10
- Resolves: #2077431 - Read-only files that have changed xattrs fail to allow xattr changes
* Tue Aug 10 2021 Mohan Boddu <mboddu@redhat.com> - 3.2.3-9
- Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
Related: rhbz#1991688