-/* Copyright (C) 1996-1999,2001-2007,2009,2010,2011
- Free Software Foundation, Inc.
+/* Copyright (C) 1996-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include <ctype.h>
#include <dlfcn.h>
#include <errno.h>
#include <netdb.h>
-#include <bits/libc-lock.h>
+#include <libc-lock.h>
#include <search.h>
#include <stdio.h>
#include <stdio_ext.h>
#include "nsswitch.h"
#include "../nscd/nscd_proto.h"
#include <sysdep.h>
+#include <config.h>
+
+#ifdef LINK_OBSOLETE_NSL
+# define DEFAULT_CONFIG "compat [NOTFOUND=return] files"
+# define DEFAULT_DEFCONFIG "nis [NOTFOUND=return] files"
+#else
+# define DEFAULT_CONFIG "files"
+# define DEFAULT_DEFCONFIG "files"
+#endif
/* Prototypes for the local functions. */
-static name_database *nss_parse_file (const char *fname) internal_function;
-static name_database_entry *nss_getline (char *line) internal_function;
-static service_user *nss_parse_service_list (const char *line)
- internal_function;
+static name_database *nss_parse_file (const char *fname);
+static name_database_entry *nss_getline (char *line);
+static service_user *nss_parse_service_list (const char *line);
+#if !defined DO_STATIC_NSS || defined SHARED
static service_library *nss_new_service (name_database *database,
- const char *name) internal_function;
+ const char *name);
+#endif
/* Declare external database variables. */
#define DEFINE_DATABASE(name) \
- extern service_user *__nss_##name##_database attribute_hidden; \
+ service_user *__nss_##name##_database attribute_hidden; \
weak_extern (__nss_##name##_database)
#include "databases.def"
#undef DEFINE_DATABASE
};
#define ndatabases (sizeof (databases) / sizeof (databases[0]))
+#ifdef USE_NSCD
/* Flags whether custom rules for database is set. */
bool __nss_database_custom[NSS_DBSIDX_max];
+#endif
__libc_lock_define_initialized (static, lock)
/* The root of the whole data base. */
static name_database *service_table;
+/* List of default service lists that were generated by glibc because
+ /etc/nsswitch.conf did not provide a value.
+ The list is only maintained so we can free such service lists in
+ __libc_freeres. */
+static name_database_entry *defconfig_entries;
+
+#if defined USE_NSCD && (!defined DO_STATIC_NSS || defined SHARED)
/* Nonzero if this is the nscd process. */
static bool is_nscd;
/* The callback passed to the init functions when nscd is used. */
static void (*nscd_init_cb) (size_t, struct traced_file *);
+#endif
/* -1 == database not found
DEFCONFIG specifies the default service list for this database,
or null to use the most common default. */
if (*ni == NULL)
- *ni = nss_parse_service_list (defconfig
- ?: "nis [NOTFOUND=return] files");
+ {
+ *ni = nss_parse_service_list (defconfig ?: DEFAULT_DEFCONFIG);
+ if (*ni != NULL)
+ {
+ /* Record the memory we've just allocated in defconfig_entries list,
+ so we can free it later. */
+ name_database_entry *entry;
+
+ /* Allocate ENTRY plus size of name (1 here). */
+ entry = (name_database_entry *) malloc (sizeof (*entry) + 1);
+
+ if (entry != NULL)
+ {
+ entry->next = defconfig_entries;
+ entry->service = *ni;
+ entry->name[0] = '\0';
+ defconfig_entries = entry;
+ }
+ }
+ }
__libc_lock_unlock (lock);
return *fctp != NULL ? 0 : (*ni)->next == NULL ? 1 : -1;
}
+libc_hidden_def (__nss_lookup)
/* -1 == not found
/* Install new rules. */
*databases[cnt].dbp = new_db;
+#ifdef USE_NSCD
__nss_database_custom[cnt] = true;
+#endif
__libc_lock_unlock (lock);
if (ni->library->lib_handle == NULL)
{
/* Load the shared library. */
- size_t shlen = (7 + strlen (ni->library->name) + 3
+ size_t shlen = (7 + strlen (ni->name) + 3
+ strlen (__nss_shlib_revision) + 1);
int saved_errno = errno;
char shlib_name[shlen];
/* Construct shared object name. */
__stpcpy (__stpcpy (__stpcpy (__stpcpy (shlib_name,
"libnss_"),
- ni->library->name),
+ ni->name),
".so"),
__nss_shlib_revision);
ni->library->lib_handle = (void *) -1l;
__set_errno (saved_errno);
}
+# ifdef USE_NSCD
else if (is_nscd)
{
/* Call the init function when nscd is used. */
- size_t initlen = (5 + strlen (ni->library->name)
+ size_t initlen = (5 + strlen (ni->name)
+ strlen ("_init") + 1);
char init_name[initlen];
/* Construct the init function name. */
__stpcpy (__stpcpy (__stpcpy (init_name,
"_nss_"),
- ni->library->name),
+ ni->name),
"_init");
/* Find the optional init function. */
if (ifct != NULL)
{
void (*cb) (size_t, struct traced_file *) = nscd_init_cb;
-# ifdef PTR_DEMANGLE
+# ifdef PTR_DEMANGLE
PTR_DEMANGLE (cb);
-# endif
+# endif
ifct (cb);
}
}
+# endif
}
return 0;
{
/* The search found an existing structure in the tree. */
result = ((known_function *) *found)->fct_ptr;
+#ifdef PTR_DEMANGLE
PTR_DEMANGLE (result);
+#endif
}
else
{
known_function *known = malloc (sizeof *known);
if (! known)
{
+#if !defined DO_STATIC_NSS || defined SHARED
remove_from_tree:
+#endif
/* Oops. We can't instantiate this node properly.
Remove it from the tree. */
__tdelete (&fct_name, &ni->known, &known_compare);
+ free (known);
result = NULL;
}
else
#if !defined DO_STATIC_NSS || defined SHARED
/* Load the appropriate library. */
if (nss_load_library (ni) != 0)
- {
- /* This only happens when out of memory. */
- free (known);
- goto remove_from_tree;
- }
+ /* This only happens when out of memory. */
+ goto remove_from_tree;
if (ni->library->lib_handle == (void *) -1l)
/* Library not found => function not found. */
else
{
/* Get the desired function. */
- size_t namlen = (5 + strlen (ni->library->name) + 1
+ size_t namlen = (5 + strlen (ni->name) + 1
+ strlen (fct_name) + 1);
char name[namlen];
/* Construct the function name. */
__stpcpy (__stpcpy (__stpcpy (__stpcpy (name, "_nss_"),
- ni->library->name),
+ ni->name),
"_"),
fct_name);
# include "function.def"
{ NULL, NULL }
};
- size_t namlen = (5 + strlen (ni->library->name) + 1
+ size_t namlen = (5 + strlen (ni->name) + 1
+ strlen (fct_name) + 1);
char name[namlen];
/* Construct the function name. */
- __stpcpy (__stpcpy (__stpcpy (name, ni->library->name),
+ __stpcpy (__stpcpy (__stpcpy (name, ni->name),
"_"),
fct_name);
/* Remember function pointer for later calls. Even if null, we
record it so a second try needn't search the library again. */
known->fct_ptr = result;
+#ifdef PTR_MANGLE
PTR_MANGLE (known->fct_ptr);
+#endif
}
}
static name_database *
-internal_function
nss_parse_file (const char *fname)
{
FILE *fp;
size_t len;
/* Open the configuration file. */
- fp = fopen (fname, "rc");
+ fp = fopen (fname, "rce");
if (fp == NULL)
return NULL;
last = this;
}
}
- while (!feof_unlocked (fp));
+ while (!__feof_unlocked (fp));
/* Free the buffer. */
free (line);
`( <source> ( "[" "!"? (<status> "=" <action> )+ "]" )? )*'
*/
static service_user *
-internal_function
nss_parse_service_list (const char *line)
{
service_user *result = NULL, **nextp = &result;
else if (__strncasecmp (name, "UNAVAIL", 7) == 0)
status = NSS_STATUS_UNAVAIL;
else
- return result;
+ goto finish;
}
else if (line - name == 8)
{
else if (__strncasecmp (name, "TRYAGAIN", 8) == 0)
status = NSS_STATUS_TRYAGAIN;
else
- return result;
+ goto finish;
}
else
- return result;
+ goto finish;
while (isspace (line[0]))
++line;
if (line[0] != '=')
- return result;
+ goto finish;
do
++line;
while (isspace (line[0]));
else if (line - name == 8
&& __strncasecmp (name, "CONTINUE", 8) == 0)
action = NSS_ACTION_CONTINUE;
+ else if (line - name == 5
+ && __strncasecmp (name, "MERGE", 5) == 0)
+ action = NSS_ACTION_MERGE;
else
- return result;
+ goto finish;
if (not)
{
*nextp = new_service;
nextp = &new_service->next;
+ continue;
+
+ finish:
+ free (new_service);
+ return result;
}
}
static name_database_entry *
-internal_function
nss_getline (char *line)
{
const char *name;
}
+#if !defined DO_STATIC_NSS || defined SHARED
static service_library *
-internal_function
nss_new_service (name_database *database, const char *name)
{
service_library **currentp = &database->library;
return *currentp;
}
+#endif
-#ifdef SHARED
+#if defined SHARED && defined USE_NSCD
/* Load all libraries for the service. */
static void
nss_load_all_libraries (const char *service, const char *def)
is_nscd = true;
/* Find all the relevant modules so that the init functions are called. */
- nss_load_all_libraries ("passwd", "compat [NOTFOUND=return] files");
- nss_load_all_libraries ("group", "compat [NOTFOUND=return] files");
+ nss_load_all_libraries ("passwd", DEFAULT_CONFIG);
+ nss_load_all_libraries ("group", DEFAULT_CONFIG);
nss_load_all_libraries ("hosts", "dns [!UNAVAIL=return] files");
nss_load_all_libraries ("services", NULL);
__nss_not_use_nscd_group = -1;
__nss_not_use_nscd_hosts = -1;
__nss_not_use_nscd_services = -1;
+ __nss_not_use_nscd_netgroup = -1;
}
#endif
-
-/* Free all resources if necessary. */
-libc_freeres_fn (free_mem)
+static void
+free_database_entries (name_database_entry *entry)
{
- name_database *top = service_table;
- name_database_entry *entry;
- service_library *library;
-
- if (top == NULL)
- /* Maybe we have not read the nsswitch.conf file. */
- return;
-
- /* Don't disturb ongoing other threads (if there are any). */
- service_table = NULL;
-
- entry = top->entry;
while (entry != NULL)
{
name_database_entry *olde = entry;
entry = entry->next;
free (olde);
}
+}
+
+/* Free all resources if necessary. */
+libc_freeres_fn (free_defconfig)
+{
+ name_database_entry *entry = defconfig_entries;
+
+ if (entry == NULL)
+ /* defconfig was not used. */
+ return;
+
+ /* Don't disturb ongoing other threads (if there are any). */
+ defconfig_entries = NULL;
+
+ free_database_entries (entry);
+}
+
+libc_freeres_fn (free_mem)
+{
+ name_database *top = service_table;
+ service_library *library;
+
+ if (top == NULL)
+ /* Maybe we have not read the nsswitch.conf file. */
+ return;
+
+ /* Don't disturb ongoing other threads (if there are any). */
+ service_table = NULL;
+
+ free_database_entries (top->entry);
library = top->library;
while (library != NULL)
projects / thirdparty / glibc.git / blobdiff