vbatts/shadow-utils-newxidmap
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This commit is contained in:
Peter Vrabec 2008-04-05 13:17:48 +00:00
parent 34e80945bb
commit 0217abaa49
17 changed files with 901 additions and 1739 deletions
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94
shadow-4.1.1-sysAccountDownhill.patch Normal file
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@ -0,0 +1,94 @@
diff -up shadow-4.1.1/libmisc/find_new_ids.c.sysAccountDownhill shadow-4.1.1/libmisc/find_new_ids.c
--- shadow-4.1.1/libmisc/find_new_ids.c.sysAccountDownhill 2008-04-04 21:46:08.000000000 +0200
+++ shadow-4.1.1/libmisc/find_new_ids.c 2008-04-04 21:50:04.000000000 +0200
@@ -22,6 +22,7 @@ int find_new_uid (int sys_user, uid_t *u
{
const struct passwd *pwd;
uid_t uid_min, uid_max, user_id;
+ char * index;
assert (uid != NULL);
@@ -32,6 +33,8 @@ int find_new_uid (int sys_user, uid_t *u
uid_min = getdef_unum ("SYS_UID_MIN", 1);
uid_max = getdef_unum ("UID_MIN", 500) - 1;
uid_max = getdef_unum ("SYS_UID_MAX", uid_max);
+ index = alloca (sizeof (char) * uid_max +1);
+ memset (index, 0, sizeof (char) * uid_max + 1);
}
if ( (NULL != preferred_uid)
@@ -61,8 +64,24 @@ int find_new_uid (int sys_user, uid_t *u
pw_rewind ();
while ( ((pwd = getpwent ()) != NULL)
|| ((pwd = pw_next ()) != NULL)) {
- if ((pwd->pw_uid >= user_id) && (pwd->pw_uid <= uid_max)) {
- user_id = pwd->pw_uid + 1;
+ if (sys_user == 0) {
+ if ((pwd->pw_uid >= user_id) && (pwd->pw_uid <= uid_max)) {
+ user_id = pwd->pw_uid + 1;
+ }
+ }
+ else {
+ /* create index of occupied system accounts UIDs */
+ if (pwd->pw_uid <= uid_max)
+ index[pwd->pw_uid] = 1;
+ }
+ }
+
+ /* find free system account */
+ if(sys_user) {
+ for( user_id = uid_max; (user_id >= uid_min) && index[user_id]; user_id--);
+ if ( user_id < uid_min ) {
+ fputs (_("Can't get unique UID (no more available UIDs)\n"), stderr);
+ return -1;
}
}
@@ -104,6 +123,7 @@ int find_new_gid (int sys_group, gid_t *
{
const struct group *grp;
gid_t gid_min, gid_max, group_id;
+ char * index;
assert (gid != NULL);
@@ -114,6 +134,8 @@ int find_new_gid (int sys_group, gid_t *
gid_min = getdef_unum ("SYS_GID_MIN", 1);
gid_max = getdef_unum ("GID_MIN", 500) - 1;
gid_max = getdef_unum ("SYS_GID_MAX", gid_max);
+ index = alloca (sizeof (char) * gid_max +1);
+ memset (index, 0, sizeof (char) * gid_max + 1);
}
if ( (NULL != preferred_gid)
@@ -142,11 +164,27 @@ int find_new_gid (int sys_group, gid_t *
gr_rewind ();
while ( ((grp = getgrent ()) != NULL)
|| ((grp = gr_next ()) != NULL)) {
- if ((grp->gr_gid >= group_id) && (grp->gr_gid <= gid_max)) {
- group_id = grp->gr_gid + 1;
+ if (sys_group == 0) {
+ if ((grp->gr_gid >= group_id) && (grp->gr_gid <= gid_max)) {
+ group_id = grp->gr_gid + 1;
+ }
+ }
+ else {
+ /* create index of occupied system accounts GIDs */
+ if (grp->gr_gid <= gid_max)
+ index[grp->gr_gid] = 1;
}
}
+ /* find free system account */
+ if(sys_group) {
+ for( group_id = gid_max; (group_id >= gid_min) && index[group_id]; group_id--);
+ if ( group_id < gid_min ) {
+ fputs (_("Can't get unique GID (no more available GIDs)\n"), stderr);
+ 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