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authorUlrich Drepper <drepper@redhat.com>2000-12-08 22:39:54 +0000
committerUlrich Drepper <drepper@redhat.com>2000-12-08 22:39:54 +0000
commit8b80182964bde1fa84333674e454d41e1fa0c8ca (patch)
treedfdb69a6a515ee5b4152036e710c3ea1fb0f96ec /nss/getnssent_r.c
parent55f44129526d6bae0595300c03fcd681f83ededb (diff)
downloadglibc-8b80182964bde1fa84333674e454d41e1fa0c8ca.tar.gz
Update.
2000-12-05 H.J. Lu <hjl@gnu.org> * nss/Makefile (routines): Add getnssent and getnssent_r. * nss/nsswitch.h (__nss_setent): New internal NSS function. (__nss_endent): Likewise. (__nss_getent_r): Likewise. (__nss_getent): Likewise. * nss/getnssent_r.c: New file. * nss/getnssent.c: New file. * nss/getXXent.c (H_ERRNO_VAR): Updated. (GETFUNC_NAME): Updated to call __nss_getent (). * nss/getXXent_r.c (H_ERRNO_VAR_P): New. (STAYOPEN_TMPVAR): Updated. (STAYOPEN_VAR): Updated. (SETFUNC_NAME): Updated to call __nss_setent (). (ENDFUNC_NAME): Updated to call __nss_endent (). (INTERNAL (REENTRANT_GETNAME)): Updated to call __nss_getent_r ().
Diffstat (limited to 'nss/getnssent_r.c')
-rw-r--r--nss/getnssent_r.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/nss/getnssent_r.c b/nss/getnssent_r.c
new file mode 100644
index 0000000000..fd8c81f201
--- /dev/null
+++ b/nss/getnssent_r.c
@@ -0,0 +1,201 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <netdb.h>
+#include "nsswitch.h"
+
+/* Set up NIP to run through the services. If ALL is zero, use NIP's
+ current location if it's not nil. Return nonzero if there are no
+ services (left). */
+static int
+setup (const char *func_name, db_lookup_function lookup_fct,
+ void **fctp, service_user **nip, service_user **startp, int all)
+{
+ int no_more;
+ if (*startp == NULL)
+ {
+ no_more = lookup_fct (nip, func_name, fctp);
+ *startp = no_more ? (service_user *) -1l : *nip;
+ }
+ else if (*startp == (service_user *) -1l)
+ /* No services at all. */
+ return 1;
+ else
+ {
+ if (all || !*nip)
+ /* Reset to the beginning of the service list. */
+ *nip = *startp;
+ /* Look up the first function. */
+ no_more = __nss_lookup (nip, func_name, fctp);
+ }
+ return no_more;
+}
+
+void
+__nss_setent (const char *func_name, db_lookup_function lookup_fct,
+ service_user **nip, service_user **startp,
+ service_user **last_nip, int stayopen, int *stayopen_tmp,
+ int res)
+{
+ setent_function fct;
+ int no_more;
+
+ if (res && (_res.options & RES_INIT) == 0
+ && __res_ninit (&_res) == -1)
+ {
+ __set_h_errno (NETDB_INTERNAL);
+ return;
+ }
+
+ /* Cycle through the services and run their `setXXent' functions until
+ we find an available service. */
+ no_more = setup (func_name, lookup_fct, (void **) &fct, nip,
+ startp, 1);
+ while (! no_more)
+ {
+ int is_last_nip = *nip == *last_nip;
+ enum nss_status status;
+
+ if (stayopen_tmp)
+ status = DL_CALL_FCT (fct, (*stayopen_tmp));
+ else
+ status = DL_CALL_FCT (fct, (0));
+
+ no_more = __nss_next (nip, func_name, (void **) &fct,
+ status, 0);
+ if (is_last_nip)
+ *last_nip = *nip;
+ }
+
+ if (stayopen_tmp)
+ *stayopen_tmp = stayopen;
+}
+
+
+void
+__nss_endent (const char *func_name, db_lookup_function lookup_fct,
+ service_user **nip, service_user **startp,
+ service_user **last_nip, int res)
+{
+ endent_function fct;
+ int no_more;
+
+ if (res && (_res.options & RES_INIT) == 0
+ && __res_ninit (&_res) == -1)
+ {
+ __set_h_errno (NETDB_INTERNAL);
+ return;
+ }
+
+ /* Cycle through all the services and run their endXXent functions. */
+ no_more = setup (func_name, lookup_fct, (void **) &fct, nip, startp, 1);
+ while (! no_more)
+ {
+ /* Ignore status, we force check in __NSS_NEXT. */
+ DL_CALL_FCT (fct, ());
+
+ if (*nip == *last_nip)
+ /* We have processed all services which were used. */
+ break;
+
+ no_more = __nss_next (nip, func_name, (void **) &fct, 0, 1);
+ }
+ *last_nip = *nip = NULL;
+}
+
+
+int
+__nss_getent_r (const char *getent_func_name,
+ const char *setent_func_name,
+ db_lookup_function lookup_fct,
+ service_user **nip, service_user **startp,
+ service_user **last_nip, int *stayopen_tmp, int res,
+ void *resbuf, char *buffer, size_t buflen,
+ void **result, int *h_errnop)
+{
+ getent_function fct;
+ int no_more;
+ enum nss_status status;
+
+ if (res && (_res.options & RES_INIT) == 0
+ && __res_ninit (&_res) == -1)
+ {
+ __set_h_errno (NETDB_INTERNAL);
+ *result = NULL;
+ return errno;
+ }
+
+ /* Initialize status to return if no more functions are found. */
+ status = NSS_STATUS_NOTFOUND;
+
+ /* Run through available functions, starting with the same function last
+ run. We will repeat each function as long as it succeeds, and then go
+ on to the next service action. */
+ no_more = setup (getent_func_name, lookup_fct, (void **) &fct, nip,
+ startp, 0);
+ while (! no_more)
+ {
+ int is_last_nip = *nip == *last_nip;
+
+ status = DL_CALL_FCT (fct,
+ (resbuf, buffer, buflen, &errno, &h_errno));
+
+ /* The the status is NSS_STATUS_TRYAGAIN and errno is ERANGE the
+ provided buffer is too small. In this case we should give
+ the user the possibility to enlarge the buffer and we should
+ not simply go on with the next service (even if the TRYAGAIN
+ action tells us so). */
+ if (status == NSS_STATUS_TRYAGAIN
+ && (h_errnop == NULL || *h_errnop == NETDB_INTERNAL)
+ && errno == ERANGE)
+ break;
+
+ do
+ {
+ no_more = __nss_next (nip, getent_func_name, (void **) &fct,
+ status, 0);
+
+ if (is_last_nip)
+ *last_nip = *nip;
+
+ if (! no_more)
+ {
+ /* Call the `setXXent' function. This wasn't done before. */
+ setent_function sfct;
+
+ no_more = __nss_lookup (nip, setent_func_name,
+ (void **) &sfct);
+
+ if (! no_more)
+ {
+ if (stayopen_tmp)
+ status = DL_CALL_FCT (sfct, (*stayopen_tmp));
+ else
+ status = DL_CALL_FCT (sfct, (0));
+ }
+ else
+ status = NSS_STATUS_NOTFOUND;
+ }
+ }
+ while (! no_more && status != NSS_STATUS_SUCCESS);
+ }
+
+ *result = status == NSS_STATUS_SUCCESS ? resbuf : NULL;
+ return status == NSS_STATUS_SUCCESS ? 0 : errno;
+}