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authorJeremy Allison <jra@samba.org>2008-11-06 20:48:13 -0800
committerJeremy Allison <jra@samba.org>2008-11-06 20:48:13 -0800
commit8962be69c700224983af4effd2cd086f7f5800b0 (patch)
treead2149c31ca5102a213a13a75cd511b11c64d812
parent7ae625345536572aa946f0715542a5cf2dbc2169 (diff)
downloadsamba-8962be69c700224983af4effd2cd086f7f5800b0.tar.gz
samba-8962be69c700224983af4effd2cd086f7f5800b0.tar.xz
samba-8962be69c700224983af4effd2cd086f7f5800b0.zip
Make us clean under valgrind --leak-check=full by using talloc_autofree_context() instead of NULL.
Remove the code in memcache that does a TALLOC_FREE on stored pointers. That's a disaster waiting to happen. If you're storing talloc'ed pointers, you can't know their lifecycle and they should be deleted when their parent context is deleted, so freeing them at some arbitrary point later will be a double-free. Jeremy.
Diffstat
-rw-r--r--source3/auth/token_util.c2
-rw-r--r--source3/lib/memcache.c26
-rw-r--r--source3/lib/util.c6
-rw-r--r--source3/lib/util_pw.c2
-rw-r--r--source3/param/loadparm.c8
-rw-r--r--source3/passdb/passdb.c2
-rw-r--r--source3/passdb/pdb_interface.c4
-rw-r--r--source3/passdb/util_unixsids.c2
-rw-r--r--source3/smbd/server.c6
-rw-r--r--source3/smbd/uid.c2
-rw-r--r--source3/utils/net_sam.c2
-rw-r--r--source3/utils/pdbedit.c4
-rw-r--r--source3/utils/smbpasswd.c4
-rw-r--r--source3/web/cgi.c4
14 files changed, 24 insertions, 50 deletions
diff --git a/source3/auth/token_util.c b/source3/auth/token_util.c
index e739fdaabe9..6c00aa0943c 100644
--- a/source3/auth/token_util.c
+++ b/source3/auth/token_util.c
@@ -102,7 +102,7 @@ NT_USER_TOKEN *get_root_nt_token( void )
uid_to_sid(&u_sid, pw->pw_uid);
gid_to_sid(&g_sid, pw->pw_gid);
- token = create_local_nt_token(NULL, &u_sid, False,
+ token = create_local_nt_token(talloc_autofree_context(), &u_sid, False,
1, &global_sid_Builtin_Administrators);
token->privileges = se_disk_operators;
diff --git a/source3/lib/memcache.c b/source3/lib/memcache.c
index 9c892fedfac..d586f707fad 100644
--- a/source3/lib/memcache.c
+++ b/source3/lib/memcache.c
@@ -40,37 +40,11 @@ struct memcache {
static void memcache_element_parse(struct memcache_element *e,
DATA_BLOB *key, DATA_BLOB *value);
-static bool memcache_is_talloc(enum memcache_number n)
-{
- bool result;
-
- switch (n) {
- case GETPWNAM_CACHE:
- case PDB_GETPWSID_CACHE:
- case SINGLETON_CACHE_TALLOC:
- result = true;
- break;
- default:
- result = false;
- break;
- }
-
- return result;
-}
-
static int memcache_destructor(struct memcache *cache) {
struct memcache_element *e, *next;
for (e = cache->mru; e != NULL; e = next) {
next = e->next;
- if (memcache_is_talloc((enum memcache_number)e->n)
- && (e->valuelength == sizeof(void *))) {
- DATA_BLOB key, value;
- void *ptr;
- memcache_element_parse(e, &key, &value);
- memcpy(&ptr, value.data, sizeof(ptr));
- TALLOC_FREE(ptr);
- }
SAFE_FREE(e);
}
return 0;
diff --git a/source3/lib/util.c b/source3/lib/util.c
index 820cf376beb..5007fb72ef8 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -1497,7 +1497,7 @@ uid_t nametouid(const char *name)
char *p;
uid_t u;
- pass = getpwnam_alloc(NULL, name);
+ pass = getpwnam_alloc(talloc_autofree_context(), name);
if (pass) {
u = pass->pw_uid;
TALLOC_FREE(pass);
@@ -2255,8 +2255,8 @@ char *myhostname(void)
static char *ret;
if (ret == NULL) {
/* This is cached forever so
- * use NULL talloc ctx. */
- ret = talloc_get_myname(NULL);
+ * use talloc_autofree_context() ctx. */
+ ret = talloc_get_myname(talloc_autofree_context());
}
return ret;
}
diff --git a/source3/lib/util_pw.c b/source3/lib/util_pw.c
index c0d37f1094b..e0dbc97f005 100644
--- a/source3/lib/util_pw.c
+++ b/source3/lib/util_pw.c
@@ -57,7 +57,7 @@ struct passwd *getpwnam_alloc(TALLOC_CTX *mem_ctx, const char *name)
return NULL;
}
- cached = tcopy_passwd(NULL, temp);
+ cached = tcopy_passwd(talloc_autofree_context(), temp);
if (cached == NULL) {
/*
* Just don't add this into the cache, ignore the failure
diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c
index fae6cb38dce..217957ab37d 100644
--- a/source3/param/loadparm.c
+++ b/source3/param/loadparm.c
@@ -4899,7 +4899,7 @@ static void init_globals(bool first_time_only)
Globals.bWinbindTrustedDomainsOnly = False;
Globals.bWinbindNestedGroups = True;
Globals.winbind_expand_groups = 1;
- Globals.szWinbindNssInfo = str_list_make_v3(NULL, "template", NULL);
+ Globals.szWinbindNssInfo = str_list_make_v3(talloc_autofree_context(), "template", NULL);
Globals.bWinbindRefreshTickets = False;
Globals.bWinbindOfflineLogon = False;
@@ -5615,7 +5615,7 @@ const char **lp_parm_string_list(int snum, const char *type, const char *option,
return (const char **)def;
if (data->list==NULL) {
- data->list = str_list_make_v3(NULL, data->value, NULL);
+ data->list = str_list_make_v3(talloc_autofree_context(), data->value, NULL);
}
return (const char **)data->list;
@@ -6859,7 +6859,7 @@ static bool handle_netbios_scope(int snum, const char *pszParmValue, char **ptr)
static bool handle_netbios_aliases(int snum, const char *pszParmValue, char **ptr)
{
TALLOC_FREE(Globals.szNetbiosAliases);
- Globals.szNetbiosAliases = str_list_make_v3(NULL, pszParmValue, NULL);
+ Globals.szNetbiosAliases = str_list_make_v3(talloc_autofree_context(), pszParmValue, NULL);
return set_netbios_aliases((const char **)Globals.szNetbiosAliases);
}
@@ -7262,7 +7262,7 @@ bool lp_do_parameter(int snum, const char *pszParmName, const char *pszParmValue
case P_LIST:
TALLOC_FREE(*((char ***)parm_ptr));
*(char ***)parm_ptr = str_list_make_v3(
- NULL, pszParmValue, NULL);
+ talloc_autofree_context(), pszParmValue, NULL);
break;
case P_STRING:
diff --git a/source3/passdb/passdb.c b/source3/passdb/passdb.c
index 60699615f0e..8367d6a9ad8 100644
--- a/source3/passdb/passdb.c
+++ b/source3/passdb/passdb.c
@@ -665,7 +665,7 @@ NTSTATUS local_password_change(const char *user_name,
DEBUGLEVEL = 1;
}
- if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
+ if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), user_name)) ) {
return NT_STATUS_NO_SUCH_USER;
}
diff --git a/source3/passdb/pdb_interface.c b/source3/passdb/pdb_interface.c
index fcb38b464b3..6fe105854f1 100644
--- a/source3/passdb/pdb_interface.c
+++ b/source3/passdb/pdb_interface.c
@@ -242,7 +242,7 @@ bool guest_user_info( struct samu *user )
NTSTATUS result;
const char *guestname = lp_guestaccount();
- if ( !(pwd = getpwnam_alloc( NULL, guestname ) ) ) {
+ if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), guestname ) ) ) {
DEBUG(0,("guest_user_info: Unable to locate guest account [%s]!\n",
guestname));
return False;
@@ -2016,7 +2016,7 @@ NTSTATUS make_pdb_method( struct pdb_methods **methods )
{
/* allocate memory for the structure as its own talloc CTX */
- if ( !(*methods = TALLOC_ZERO_P(NULL, struct pdb_methods) ) ) {
+ if ( !(*methods = TALLOC_ZERO_P(talloc_autofree_context(), struct pdb_methods) ) ) {
return NT_STATUS_NO_MEMORY;
}
diff --git a/source3/passdb/util_unixsids.c b/source3/passdb/util_unixsids.c
index 1b674d02a2d..ad4e70256dd 100644
--- a/source3/passdb/util_unixsids.c
+++ b/source3/passdb/util_unixsids.c
@@ -56,7 +56,7 @@ bool lookup_unix_user_name(const char *name, DOM_SID *sid)
{
struct passwd *pwd;
- pwd = getpwnam_alloc(NULL, name);
+ pwd = getpwnam_alloc(talloc_autofree_context(), name);
if (pwd == NULL) {
return False;
}
diff --git a/source3/smbd/server.c b/source3/smbd/server.c
index 7583da65a52..fff05a3aac7 100644
--- a/source3/smbd/server.c
+++ b/source3/smbd/server.c
@@ -80,7 +80,7 @@ struct event_context *smbd_event_context(void)
{
static struct event_context *ctx;
- if (!ctx && !(ctx = event_context_init(NULL))) {
+ if (!ctx && !(ctx = event_context_init(talloc_autofree_context()))) {
smb_panic("Could not init smbd event context");
}
return ctx;
@@ -91,7 +91,7 @@ struct messaging_context *smbd_messaging_context(void)
static struct messaging_context *ctx;
if (ctx == NULL) {
- ctx = messaging_init(NULL, server_id_self(),
+ ctx = messaging_init(talloc_autofree_context(), server_id_self(),
smbd_event_context());
}
if (ctx == NULL) {
@@ -105,7 +105,7 @@ struct memcache *smbd_memcache(void)
static struct memcache *cache;
if (!cache
- && !(cache = memcache_init(NULL,
+ && !(cache = memcache_init(talloc_autofree_context(),
lp_max_stat_cache_size()*1024))) {
smb_panic("Could not init smbd memcache");
diff --git a/source3/smbd/uid.c b/source3/smbd/uid.c
index 8998f6a371b..045de6f2d32 100644
--- a/source3/smbd/uid.c
+++ b/source3/smbd/uid.c
@@ -32,7 +32,7 @@ bool change_to_guest(void)
if (!pass) {
/* Don't need to free() this as its stored in a static */
- pass = getpwnam_alloc(NULL, lp_guestaccount());
+ pass = getpwnam_alloc(talloc_autofree_context(), lp_guestaccount());
if (!pass)
return(False);
}
diff --git a/source3/utils/net_sam.c b/source3/utils/net_sam.c
index ce132131f73..e8ebb602057 100644
--- a/source3/utils/net_sam.c
+++ b/source3/utils/net_sam.c
@@ -1735,7 +1735,7 @@ doma_done:
d_printf("Checking Guest's group.\n");
- pwd = getpwnam_alloc(NULL, lp_guestaccount());
+ pwd = getpwnam_alloc(talloc_autofree_context(), lp_guestaccount());
if (!pwd) {
d_fprintf(stderr, "Failed to find just created Guest account!\n"
" Is nss properly configured?!\n");
diff --git a/source3/utils/pdbedit.c b/source3/utils/pdbedit.c
index fe99b6fc9e5..50cbc43d6de 100644
--- a/source3/utils/pdbedit.c
+++ b/source3/utils/pdbedit.c
@@ -571,7 +571,7 @@ static int new_user (struct pdb_methods *in, const char *username,
get_global_sam_sid();
- if ( !(pwd = getpwnam_alloc( NULL, username )) ) {
+ if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), username )) ) {
DEBUG(0,("Cannot locate Unix account for %s\n", username));
return -1;
}
@@ -675,7 +675,7 @@ static int new_machine (struct pdb_methods *in, const char *machine_in)
fstrcpy(machineaccount, machinename);
fstrcat(machineaccount, "$");
- if ( !(pwd = getpwnam_alloc( NULL, machineaccount )) ) {
+ if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), machineaccount )) ) {
DEBUG(0,("Cannot locate Unix account for %s\n", machineaccount));
return -1;
}
diff --git a/source3/utils/smbpasswd.c b/source3/utils/smbpasswd.c
index 600fe52f0d7..d2652ad95a5 100644
--- a/source3/utils/smbpasswd.c
+++ b/source3/utils/smbpasswd.c
@@ -337,7 +337,7 @@ static int process_root(int local_flags)
load_interfaces();
}
- if (!user_name[0] && (pwd = getpwuid_alloc(NULL, geteuid()))) {
+ if (!user_name[0] && (pwd = getpwuid_alloc(talloc_autofree_context(), geteuid()))) {
fstrcpy(user_name, pwd->pw_name);
TALLOC_FREE(pwd);
}
@@ -498,7 +498,7 @@ static int process_nonroot(int local_flags)
}
if (!user_name[0]) {
- pwd = getpwuid_alloc(NULL, getuid());
+ pwd = getpwuid_alloc(talloc_autofree_context(), getuid());
if (pwd) {
fstrcpy(user_name,pwd->pw_name);
TALLOC_FREE(pwd);
diff --git a/source3/web/cgi.c b/source3/web/cgi.c
index ce36bd93101..49e83717c3d 100644
--- a/source3/web/cgi.c
+++ b/source3/web/cgi.c
@@ -314,7 +314,7 @@ static void cgi_web_auth(void)
exit(0);
}
- pwd = getpwnam_alloc(NULL, user);
+ pwd = getpwnam_alloc(talloc_autofree_context(), user);
if (!pwd) {
printf("%sCannot find user %s<br>%s\n", head, user, tail);
exit(0);
@@ -367,7 +367,7 @@ static bool cgi_handle_authorization(char *line)
* Try and get the user from the UNIX password file.
*/
- pass = getpwnam_alloc(NULL, user);
+ pass = getpwnam_alloc(talloc_autofree_context(), user);
/*
* Validate the password they have given.
generated by cgit (git 2.34.1) at 2025-05-02 22:28:51 +0000