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passwd: Also clone subuid/subgid files

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These were added to shadow-utils in recent times (Fedora 25 e.g.)  and
like the other passwd files, shadow-utils opens them with `O_TRUNC`.

(At some point we should patch it to do create-new-then-replace internally)

Closes: https://github.com/projectatomic/rpm-ostree/issues/458

Closes: #459
Approved by: jlebon
This commit is contained in:
Colin Walters 2016-09-12 16:34:55 -04:00 committed by Atomic Bot
parent 037a310964
commit 0fd83d47b7
1 changed files with 16 additions and 2 deletions
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18
src/libpriv/rpmostree-passwd-util.c
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@ -1158,8 +1158,10 @@ rpmostree_generate_passwd_from_previous (OstreeRepo *repo,
static const char *usrlib_pwgrp_files[] = { "passwd", "group" };
/* Lock/backup files that should not be in the base commit (TODO fix) */
static const char *pwgrp_lock_and_backup_files[] = { ".pwd.lock", "passwd-", "group-",
"shadow-", "gshadow-" };
static const char *pwgrp_shadow_files[] = { "shadow", "gshadow" };
"shadow-", "gshadow-",
"subuid-", "subgid-" };
static const char *pwgrp_shadow_files[] = { "shadow", "gshadow",
"subuid", "subgid"};
static gboolean
rootfs_has_usrlib_passwd (int rootfs_dfd,
@ -1245,9 +1247,21 @@ rpmostree_passwd_prepare_rpm_layering (int rootfs_dfd,
*/
for (guint i = 0; i < G_N_ELEMENTS (pwgrp_shadow_files); i++)
{
struct stat stbuf;
const char *file = pwgrp_shadow_files[i];
const char *src = glnx_strjoina ("usr/etc/", file);
const char *tmp = glnx_strjoina ("usr/etc/", file, ".tmp");
if (fstatat (rootfs_dfd, src, &stbuf, AT_SYMLINK_NOFOLLOW) < 0)
{
if (errno != ENOENT)
{
glnx_set_error_from_errno (error);
return FALSE;
}
continue;
}
if (!glnx_file_copy_at (rootfs_dfd, src, NULL,
rootfs_dfd, tmp, GLNX_FILE_COPY_OVERWRITE,
cancellable, error))