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nsswitch: use new internal API (core)

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Core changes to switch the NSS internals to use the new API.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
DJ Delorie
2020-11-09 22:06:57 -05:00
parent fa78feca47
commit f8847d83e1
8 changed files with 169 additions and 846 deletions
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64
nss/nss_module.c
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@ -16,7 +16,9 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <nss_module.h>
#include <nsswitch.h>
#include <nscd/nscd.h>
#include <nscd/nscd_proto.h>
#include <array_length.h>
#include <assert.h>
@ -287,6 +289,66 @@ __nss_module_get_function (struct nss_module *module, const char *name)
return fptr;
}
#if defined SHARED && defined USE_NSCD
/* Load all libraries for the service. */
static void
nss_load_all_libraries (const char *service, const char *def)
{
nss_action_list ni = NULL;
if (__nss_database_lookup2 (service, NULL, def, &ni) == 0)
while (ni->module != NULL)
{
__nss_module_load (ni->module);
++ni;
}
}
define_traced_file (pwd, _PATH_NSSWITCH_CONF);
define_traced_file (grp, _PATH_NSSWITCH_CONF);
define_traced_file (hst, _PATH_NSSWITCH_CONF);
define_traced_file (serv, _PATH_NSSWITCH_CONF);
define_traced_file (netgr, _PATH_NSSWITCH_CONF);
/* Called by nscd and nscd alone. */
void
__nss_disable_nscd (void (*cb) (size_t, struct traced_file *))
{
void (*cb1) (size_t, struct traced_file *);
cb1 = cb;
# ifdef PTR_MANGLE
PTR_MANGLE (cb);
# endif
nscd_init_cb = cb;
is_nscd = true;
/* Find all the relevant modules so that the init functions are called. */
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);
/* Make sure NSCD purges its cache if nsswitch.conf changes. */
init_traced_file (&pwd_traced_file.file, _PATH_NSSWITCH_CONF, 0);
cb1 (pwddb, &pwd_traced_file.file);
init_traced_file (&grp_traced_file.file, _PATH_NSSWITCH_CONF, 0);
cb1 (grpdb, &grp_traced_file.file);
init_traced_file (&hst_traced_file.file, _PATH_NSSWITCH_CONF, 0);
cb1 (hstdb, &hst_traced_file.file);
init_traced_file (&serv_traced_file.file, _PATH_NSSWITCH_CONF, 0);
cb1 (servdb, &serv_traced_file.file);
init_traced_file (&netgr_traced_file.file, _PATH_NSSWITCH_CONF, 0);
cb1 (netgrdb, &netgr_traced_file.file);
/* Disable all uses of NSCD. */
__nss_not_use_nscd_passwd = -1;
__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
void __libc_freeres_fn_section
__nss_module_freeres (void)
{