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From 169e74d772eac561a24f461ac65118d3d83a5980 Mon Sep 17 00:00:00 2001
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From: Ivan Shapovalov <intelfx100@gmail.com>
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Date: Sat, 7 Mar 2015 18:11:32 +0300
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Subject: [PATCH] sysusers: do not reject users with already present
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/etc/shadow entries
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This is needed to interoperate firstboot and sysusers. The former one is started
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first, and it writes only /etc/shadow when it is told to set the root password.
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It's better to relax checks here than to duplicate functionality in firstboot.
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(cherry picked from commit c5abf22514b3925aa6f0d4a3f36f76799bf1911b)
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---
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src/sysusers/sysusers.c | 23 +++++++++--------------
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1 file changed, 9 insertions(+), 14 deletions(-)
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diff --git a/src/sysusers/sysusers.c b/src/sysusers/sysusers.c
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index e47bcb4..76b5962 100644
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--- a/src/sysusers/sysusers.c
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+++ b/src/sysusers/sysusers.c
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@@ -605,6 +605,8 @@ static int write_files(void) {
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if (r < 0)
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goto finish;
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+ lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
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+
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original = fopen(shadow_path, "re");
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if (original) {
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struct spwd *sp;
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@@ -618,8 +620,13 @@ static int write_files(void) {
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i = hashmap_get(users, sp->sp_namp);
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if (i && i->todo_user) {
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- r = -EEXIST;
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- goto finish;
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+ /* we will update the existing entry */
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+ sp->sp_lstchg = lstchg;
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+
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+ /* only the /etc/shadow stage is left, so we can
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+ * safely remove the item from the todo set */
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+ i->todo_user = false;
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+ hashmap_remove(todo_uids, UID_TO_PTR(i->uid));
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}
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errno = 0;
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@@ -642,7 +649,6 @@ static int write_files(void) {
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goto finish;
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}
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- lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
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HASHMAP_FOREACH(i, todo_uids, iterator) {
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struct spwd n = {
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.sp_namp = i->name,
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@@ -879,7 +885,6 @@ static int add_user(Item *i) {
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if (!arg_root) {
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struct passwd *p;
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- struct spwd *sp;
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/* Also check NSS */
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errno = 0;
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@@ -895,16 +900,6 @@ static int add_user(Item *i) {
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}
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if (!IN_SET(errno, 0, ENOENT))
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return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name);
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-
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- /* And shadow too, just to be sure */
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- errno = 0;
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- sp = getspnam(i->name);
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- if (sp) {
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- log_error("User %s already exists in shadow database, but not in user database.", i->name);
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- return -EBADMSG;
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- }
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- if (!IN_SET(errno, 0, ENOENT))
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- return log_error_errno(errno, "Failed to check if user %s already exists in shadow database: %m", i->name);
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}
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/* Try to use the suggested numeric uid */
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