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* libmisc/find_new_gid.c, libmisc/find_new_uid.c: For system

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accounts, return the first unused ID, starting from the max value.
	This could be useful later to increase the static IDs range.
This commit is contained in:
nekral-guest 2009-04-11 16:00:45 +00:00
parent 8d136297c4
commit ca1bb50c24
4 changed files with 46 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2009-04-11 Peter Vrabec <pvrabec@redhat.com>
* libmisc/find_new_gid.c, libmisc/find_new_uid.c: For system
accounts, return the first unused ID, starting from the max value.
This could be useful later to increase the static IDs range.
2009-04-11 Peter Vrabec <pvrabec@redhat.com>
* NEWS, src/useradd.c, man/useradd.8.xml: add -Z option to map

6
NEWS
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@ -56,6 +56,8 @@ shadow-4.1.2.2 -> shadow-4.1.3 UNRELEASED
* error handling improvement (see above).
* Speedup (see "addition of users or groups" above).
* do not create groups with GID set to (gid_t)-1.
* Allocate system group GIDs in reverse order. This could be useful
later to increase the static IDs range.
- groupdel
* audit logging improvements.
* error handling improvement (see above).
@ -82,6 +84,8 @@ shadow-4.1.2.2 -> shadow-4.1.3 UNRELEASED
* Speedup (see "addition of users or groups" above).
* do not create users with UID set to (gid_t)-1.
* do not create groups with GID set to (gid_t)-1.
* Allocate system account UIDs/GIDs in reverse order. This could be useful
later to increase the static IDs range.
- passwd
* For compatibility with other passwd version, the --lock an --unlock
options do not lock or unlock the user account anymore. They only
@ -98,6 +102,8 @@ shadow-4.1.2.2 -> shadow-4.1.3 UNRELEASED
* New -M/--no-create-home option to disable CREATE_HOME.
* do not create users with UID set to (gid_t)-1.
* Added -Z option to map SELinux user for user's login.
* Allocate system user UIDs in reverse order. This could be useful
later to increase the static IDs range.
- userdel
* audit logging improvements.
* Do not fail if the removed user is not in the shadow database.

17
libmisc/find_new_gid.c
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@ -110,6 +110,23 @@ int find_new_gid (bool sys_group, gid_t *gid, gid_t const *preferred_gid)
}
}
/* find free system account in reverse order */
if (sys_group) {
for (group_id = gid_max; group_id >= gid_min; group_id--) {
if (0 == used_gids[group_id]) {
break;
}
}
if ( group_id < gid_min ) {
fprintf (stderr,
_("%s: Can't get unique GID (no more available GIDs)\n"),
Prog);
SYSLOG ((LOG_WARN,
"no more available GID on the system"));
return -1;
}
}
/*
* If a group with GID equal to GID_MAX exists, the above algorithm
* will give us GID_MAX+1 even if not unique. Search for the first

17
libmisc/find_new_uid.c
View File

@ -111,6 +111,23 @@ int find_new_uid (bool sys_user, uid_t *uid, uid_t const *preferred_uid)
}
}
/* find free system account in reverse order */
if (sys_user) {
for (user_id = uid_max; user_id >= uid_min; user_id--) {
if (0 == used_uids[user_id]) {
break;
}
}
if (user_id < uid_min ) {
fprintf (stderr,
_("%s: Can't get unique system UID (no more available UIDs)\n"),
Prog);
SYSLOG ((LOG_WARN,
"no more available UID on the system"));
return -1;
}
}
/*
* If a user with UID equal to UID_MAX exists, the above algorithm
* will give us UID_MAX+1 even if not unique. Search for the first