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* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Fail in case of

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invalid configuration. 
	* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Updated
	comments.
	* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Be more strict
	on the loop stop conditions. Stop if we passed the limit, even if
	the limit itself was never noticed.
This commit is contained in:
nekral-guest
2011-07-22 21:53:01 +00:00
parent a210d898b6
commit 275ffe2e01
3 changed files with 33 additions and 17 deletions
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21
libmisc/find_new_gid.c
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@@ -1,6 +1,6 @@
/*
* Copyright (c) 1991 - 1994, Julianne Frances Haugh
* Copyright (c) 2008 - 2009, Nicolas François
* Copyright (c) 2008 - 2011, Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -65,6 +65,7 @@ int find_new_gid (bool sys_group,
(void) fprintf (stderr,
_("%s: Invalid configuration: GID_MIN (%lu), GID_MAX (%lu)\n"),
Prog, (unsigned long) gid_min, (unsigned long) gid_max);
return -1;
}
} else {
gid_min = (gid_t) getdef_ulong ("SYS_GID_MIN", 101UL);
@@ -74,6 +75,7 @@ int find_new_gid (bool sys_group,
(void) fprintf (stderr,
_("%s: Invalid configuration: SYS_GID_MIN (%lu), GID_MIN (%lu), SYS_GID_MAX (%lu)\n"),
Prog, (unsigned long) gid_min, getdef_ulong ("GID_MIN", 1000UL), (unsigned long) gid_max);
return -1;
}
}
used_gids = malloc (sizeof (bool) * (gid_max +1));
@@ -159,18 +161,19 @@ int find_new_gid (bool sys_group,
}
/*
* 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
* free GID starting with GID_MIN.
* If a group (resp. system group) with GID equal to GID_MAX (resp.
* GID_MIN) exists, the above algorithm will give us GID_MAX+1
* (resp. GID_MIN-1) even if not unique. Search for the first free
* GID starting with GID_MIN (resp. GID_MAX).
*/
if (sys_group) {
if (group_id == gid_min - 1) {
if (group_id < gid_min) {
for (group_id = gid_max; group_id >= gid_min; group_id--) {
if (false == used_gids[group_id]) {
break;
}
}
if ( group_id < gid_min ) {
if (group_id < gid_min) {
fprintf (stderr,
_("%s: Can't get unique system GID (no more available GIDs)\n"),
Prog);
@@ -180,13 +183,13 @@ int find_new_gid (bool sys_group,
}
}
} else {
if (group_id == gid_max + 1) {
for (group_id = gid_min; group_id < gid_max; group_id++) {
if (group_id > gid_max) {
for (group_id = gid_min; group_id <= gid_max; group_id++) {
if (false == used_gids[group_id]) {
break;
}
}
if (group_id == gid_max) {
if (group_id > gid_max) {
fprintf (stderr,
_("%s: Can't get unique GID (no more available GIDs)\n"),
Prog);