svn commit: samba r22020 - in branches/SAMBA_3_0/source: auth
include lib smbd
abartlet at samba.org
abartlet at samba.org
Mon Apr 2 03:46:14 GMT 2007
Author: abartlet
Date: 2007-04-02 03:46:13 +0000 (Mon, 02 Apr 2007)
New Revision: 22020
WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=22020
Log:
Make it more clear that both the vuser struct and it's contents are
talloc_free()'ed at the end of a session.
Rework the passwd cache code to use talloc_unlink and
talloc_reference, to more carefully manage the cache.
Andrew Bartlett
Modified:
branches/SAMBA_3_0/source/auth/auth_sam.c
branches/SAMBA_3_0/source/auth/auth_util.c
branches/SAMBA_3_0/source/include/smb.h
branches/SAMBA_3_0/source/lib/util_pw.c
branches/SAMBA_3_0/source/smbd/password.c
branches/SAMBA_3_0/source/smbd/session.c
Changeset:
Modified: branches/SAMBA_3_0/source/auth/auth_sam.c
===================================================================
--- branches/SAMBA_3_0/source/auth/auth_sam.c 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/auth/auth_sam.c 2007-04-02 03:46:13 UTC (rev 22020)
@@ -266,7 +266,7 @@
/* Can't use the talloc version here, because the returned struct gets
kept on the server_info */
- if ( !(sampass = samu_new( NULL )) ) {
+ if ( !(sampass = samu_new( mem_ctx )) ) {
return NT_STATUS_NO_MEMORY;
}
Modified: branches/SAMBA_3_0/source/auth/auth_util.c
===================================================================
--- branches/SAMBA_3_0/source/auth/auth_util.c 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/auth/auth_util.c 2007-04-02 03:46:13 UTC (rev 22020)
@@ -561,19 +561,23 @@
DOM_SID unix_group_sid;
- if ( !(pwd = getpwnam_alloc(NULL, pdb_get_username(sampass))) ) {
+ if ( !(result = make_server_info(NULL)) ) {
+ TALLOC_FREE(pwd);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if ( !(pwd = getpwnam_alloc(result, pdb_get_username(sampass))) ) {
DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
pdb_get_username(sampass)));
return NT_STATUS_NO_SUCH_USER;
}
- if ( !(result = make_server_info(NULL)) ) {
- TALLOC_FREE(pwd);
- return NT_STATUS_NO_MEMORY;
- }
-
result->sam_account = sampass;
- result->unix_name = talloc_strdup(result, pwd->pw_name);
+ /* Ensure thaat the sampass will be freed with the result */
+ talloc_steal(result, sampass);
+ result->unix_name = pwd->pw_name;
+ /* Ensure that we keep pwd->pw_name, because we will free pwd below */
+ talloc_steal(result, pwd->pw_name);
result->gid = pwd->pw_gid;
result->uid = pwd->pw_uid;
Modified: branches/SAMBA_3_0/source/include/smb.h
===================================================================
--- branches/SAMBA_3_0/source/include/smb.h 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/include/smb.h 2007-04-02 03:46:13 UTC (rev 22020)
@@ -1737,9 +1737,9 @@
gid_t gid; /* gid of a validated user */
userdom_struct user;
- char *homedir;
- char *unix_homedir;
- char *logon_script;
+ const char *homedir;
+ const char *unix_homedir;
+ const char *logon_script;
BOOL guest;
Modified: branches/SAMBA_3_0/source/lib/util_pw.c
===================================================================
--- branches/SAMBA_3_0/source/lib/util_pw.c 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/lib/util_pw.c 2007-04-02 03:46:13 UTC (rev 22020)
@@ -98,15 +98,15 @@
i = rand() % PWNAMCACHE_SIZE;
if (pwnam_cache[i] != NULL) {
- TALLOC_FREE(pwnam_cache[i]);
+ /* Remove this old cache entry, from the cache. We
+ * use talloc_unlink here because we want to be very
+ * clear which referece we are removing */
+ talloc_unlink(pwnam_cache, pwnam_cache[i]);
}
pwnam_cache[i] = tcopy_passwd(pwnam_cache, temp);
- if (pwnam_cache[i]!= NULL && mem_ctx != NULL) {
- return (struct passwd *)talloc_reference(mem_ctx, pwnam_cache[i]);
- }
-
- return tcopy_passwd(NULL, pwnam_cache[i]);
+ /* while keeping this in the cache, reference a copy for the caller */
+ return (struct passwd *)talloc_reference(mem_ctx, pwnam_cache[i]);
}
struct passwd *getpwuid_alloc(TALLOC_CTX *mem_ctx, uid_t uid)
Modified: branches/SAMBA_3_0/source/smbd/password.c
===================================================================
--- branches/SAMBA_3_0/source/smbd/password.c 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/smbd/password.c 2007-04-02 03:46:13 UTC (rev 22020)
@@ -92,15 +92,8 @@
if (vuser == NULL)
return;
- SAFE_FREE(vuser->homedir);
- SAFE_FREE(vuser->unix_homedir);
- SAFE_FREE(vuser->logon_script);
-
session_yield(vuser);
- SAFE_FREE(vuser->session_keystr);
- TALLOC_FREE(vuser->server_info);
-
data_blob_free(&vuser->session_key);
DLIST_REMOVE(validated_users, vuser);
@@ -109,10 +102,7 @@
from the vuid 'owner' of connections */
conn_clear_vuid_cache(vuid);
- SAFE_FREE(vuser->groups);
- TALLOC_FREE(vuser->nt_user_token);
-
- SAFE_FREE(vuser);
+ TALLOC_FREE(vuser);
num_validated_vuids--;
}
@@ -153,7 +143,7 @@
DATA_BLOB session_key, DATA_BLOB response_blob,
const char *smb_name)
{
- user_struct *vuser = NULL;
+ user_struct *vuser;
/* Paranoia check. */
if(lp_security() == SEC_SHARE) {
@@ -166,14 +156,12 @@
return UID_FIELD_INVALID;
}
- if((vuser = SMB_MALLOC_P(user_struct)) == NULL) {
- DEBUG(0,("Failed to malloc users struct!\n"));
+ if((vuser = talloc_zero(NULL, user_struct)) == NULL) {
+ DEBUG(0,("Failed to talloc users struct!\n"));
data_blob_free(&session_key);
return UID_FIELD_INVALID;
}
- ZERO_STRUCTP(vuser);
-
/* Allocate a free vuid. Yes this is a linear search... :-) */
while( get_valid_user_struct(next_vuid) != NULL ) {
next_vuid++;
@@ -203,6 +191,11 @@
return vuser->vuid;
}
+ /* use this to keep tabs on all our info from the authentication */
+ vuser->server_info = server_info;
+ /* Ensure that the server_info will dissapear with the vuser it is now attached to */
+ talloc_steal(vuser, vuser->server_info);
+
/* the next functions should be done by a SID mapping system (SMS) as
* the new real sam db won't have reference to unix uids or gids
*/
@@ -212,14 +205,13 @@
vuser->n_groups = server_info->n_groups;
if (vuser->n_groups) {
- if (!(vuser->groups = (gid_t *)memdup(server_info->groups,
- sizeof(gid_t) *
- vuser->n_groups))) {
- DEBUG(0,("register_vuid: failed to memdup "
+ if (!(vuser->groups = (gid_t *)talloc_memdup(vuser, server_info->groups,
+ sizeof(gid_t) *
+ vuser->n_groups))) {
+ DEBUG(0,("register_vuid: failed to talloc_memdup "
"vuser->groups\n"));
data_blob_free(&session_key);
- free(vuser);
- TALLOC_FREE(server_info);
+ TALLOC_FREE(vuser);
return UID_FIELD_INVALID;
}
}
@@ -247,24 +239,26 @@
const char *unix_homedir =
pdb_get_unix_homedir(server_info->sam_account);
if (unix_homedir) {
- vuser->unix_homedir =
- smb_xstrdup(unix_homedir);
+ vuser->unix_homedir = unix_homedir;
}
} else {
struct passwd *passwd =
- getpwnam_alloc(NULL, vuser->user.unix_name);
+ getpwnam_alloc(vuser, vuser->user.unix_name);
if (passwd) {
- vuser->unix_homedir =
- smb_xstrdup(passwd->pw_dir);
+ vuser->unix_homedir = passwd->pw_dir;
+ /* Ensure that the unix_homedir now
+ * belongs to vuser, so it goes away
+ * with it, not with passwd below: */
+ talloc_steal(vuser, vuser->unix_homedir);
TALLOC_FREE(passwd);
}
}
if (homedir) {
- vuser->homedir = smb_xstrdup(homedir);
+ vuser->homedir = homedir;
}
if (logon_script) {
- vuser->logon_script = smb_xstrdup(logon_script);
+ vuser->logon_script = logon_script;
}
}
@@ -280,23 +274,15 @@
vuser->user.full_name));
if (server_info->ptok) {
- vuser->nt_user_token = dup_nt_token(NULL, server_info->ptok);
+ vuser->nt_user_token = dup_nt_token(vuser, server_info->ptok);
} else {
DEBUG(1, ("server_info does not contain a user_token - "
"cannot continue\n"));
- TALLOC_FREE(server_info);
+ TALLOC_FREE(vuser);
data_blob_free(&session_key);
- SAFE_FREE(vuser->homedir);
- SAFE_FREE(vuser->unix_homedir);
- SAFE_FREE(vuser->logon_script);
-
- SAFE_FREE(vuser);
return UID_FIELD_INVALID;
}
- /* use this to keep tabs on all our info from the authentication */
- vuser->server_info = server_info;
-
DEBUG(3,("UNIX uid %d is UNIX user %s, and will be vuid %u\n",
(int)vuser->uid,vuser->user.unix_name, vuser->vuid));
Modified: branches/SAMBA_3_0/source/smbd/session.c
===================================================================
--- branches/SAMBA_3_0/source/smbd/session.c 2007-04-01 13:50:02 UTC (rev 22019)
+++ branches/SAMBA_3_0/source/smbd/session.c 2007-04-02 03:46:13 UTC (rev 22020)
@@ -153,9 +153,9 @@
sessionid.id_str, sessionid.id_num);
}
- vuser->session_keystr = SMB_STRDUP(keystr);
+ vuser->session_keystr = talloc_strdup(vuser, keystr);
if (!vuser->session_keystr) {
- DEBUG(0, ("session_claim: strdup() failed for session_keystr\n"));
+ DEBUG(0, ("session_claim: talloc_strdup() failed for session_keystr\n"));
return False;
}
return True;
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