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sysusers: do not reject users with already present /etc/shadow entries

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This is needed to interoperate firstboot and sysusers. The former one is started
first, and it writes only /etc/shadow when it is told to set the root password.
It's better to relax checks here than to duplicate functionality in firstboot.
This commit is contained in:
Ivan Shapovalov 2015-03-07 18:11:32 +03:00 committed by Zbigniew Jędrzejewski-Szmek
parent ad525df851
commit c5abf22514
Notes: Lennart Poettering 2015-05-21 17:51:26 +02:00 
Backport: bugfix
1 changed files with 9 additions and 14 deletions
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23
src/sysusers/sysusers.c
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@ -603,6 +603,8 @@ static int write_files(void) {
if (r < 0)
goto finish;
lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
original = fopen(shadow_path, "re");
if (original) {
struct spwd *sp;
@ -616,8 +618,13 @@ static int write_files(void) {
i = hashmap_get(users, sp->sp_namp);
if (i && i->todo_user) {
r = -EEXIST;
goto finish;
/* we will update the existing entry */
sp->sp_lstchg = lstchg;
/* only the /etc/shadow stage is left, so we can
* safely remove the item from the todo set */
i->todo_user = false;
hashmap_remove(todo_uids, UID_TO_PTR(i->uid));
}
errno = 0;
@ -640,7 +647,6 @@ static int write_files(void) {
goto finish;
}
lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
HASHMAP_FOREACH(i, todo_uids, iterator) {
struct spwd n = {
.sp_namp = i->name,
@ -877,7 +883,6 @@ static int add_user(Item *i) {
if (!arg_root) {
struct passwd *p;
struct spwd *sp;
/* Also check NSS */
errno = 0;
@ -893,16 +898,6 @@ static int add_user(Item *i) {
}
if (!IN_SET(errno, 0, ENOENT))
return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name);
/* And shadow too, just to be sure */
errno = 0;
sp = getspnam(i->name);
if (sp) {
log_error("User %s already exists in shadow database, but not in user database.", i->name);
return -EBADMSG;
}
if (!IN_SET(errno, 0, ENOENT))
return log_error_errno(errno, "Failed to check if user %s already exists in shadow database: %m", i->name);
}
/* Try to use the suggested numeric uid */