diff options
Diffstat (limited to 'glibc-compat/nss_db/db-XXX.c')
| -rw-r--r-- | glibc-compat/nss_db/db-XXX.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/glibc-compat/nss_db/db-XXX.c b/glibc-compat/nss_db/db-XXX.c deleted file mode 100644 index 8c05829656..0000000000 --- a/glibc-compat/nss_db/db-XXX.c +++ /dev/null @@ -1,257 +0,0 @@ -/* Common code for DB-based databases in nss_db module. - Copyright (C) 1996, 1997, 1998, 1999, 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 <dlfcn.h> -#include <fcntl.h> -#include <bits/libc-lock.h> -#include "nsswitch.h" -#include "nss_db.h" - -/* These symbols are defined by the including source file: - - ENTNAME -- database name of the structure and functions (hostent, pwent). - STRUCTURE -- struct name, define only if not ENTNAME (passwd, group). - DATABASE -- database file name, ("hosts", "passwd") - - NEED_H_ERRNO - defined iff an arg `int *herrnop' is used. -*/ - -#define ENTNAME_r CONCAT(ENTNAME,_r) - -#include <paths.h> -#define DBFILE _PATH_VARDB DATABASE ".db" - -#ifdef NEED_H_ERRNO -#define H_ERRNO_PROTO , int *herrnop -#define H_ERRNO_ARG , herrnop -#define H_ERRNO_SET(val) (*herrnop = (val)) -#else -#define H_ERRNO_PROTO -#define H_ERRNO_ARG -#define H_ERRNO_SET(val) ((void) 0) -#endif - -/* Locks the static variables in this file. */ -__libc_lock_define_initialized (static, lock) - -/* Maintenance of the shared handle open on the database. */ - -static NSS_DB *db; -static int keep_db; -static int entidx; - - -/* Open the database. */ -enum nss_status -CONCAT(_nss_db_set,ENTNAME) (int stayopen) -{ - enum nss_status status; - - __libc_lock_lock (lock); - - status = internal_setent (DBFILE, &db); - - /* Remember STAYOPEN flag. */ - if (db != NULL) - keep_db |= stayopen; - /* Reset the sequential index. */ - entidx = 0; - - __libc_lock_unlock (lock); - - return status; -} - - -/* Close it again. */ -enum nss_status -CONCAT(_nss_db_end,ENTNAME) (void) -{ - __libc_lock_lock (lock); - - internal_endent (&db); - - /* Reset STAYOPEN flag. */ - keep_db = 0; - - __libc_lock_unlock (lock); - - return NSS_STATUS_SUCCESS; -} - -/* Do a database lookup for KEY. */ -static enum nss_status -lookup (DBT *key, struct STRUCTURE *result, - void *buffer, int buflen H_ERRNO_PROTO) -{ - char *p; - enum nss_status status; - int err; - DBT value; - - /* Open the database. */ - if (db == NULL) - { - status = internal_setent (DBFILE, &db); - if (status != NSS_STATUS_SUCCESS) - { - H_ERRNO_SET (NETDB_INTERNAL); - return status; - } - } - - /* Succeed iff it matches a value that parses correctly. */ - value.flags = 0; - err = DL_CALL_FCT (db->get, (db->db, NULL, key, &value, 0)); - if (err != 0) - { - if (err == db_notfound) - { - H_ERRNO_SET (HOST_NOT_FOUND); - status = NSS_STATUS_NOTFOUND; - } - else - { - H_ERRNO_SET (NETDB_INTERNAL); - status = NSS_STATUS_UNAVAIL; - } - } - else if (buflen < value.size) - { - /* No room to copy the data to. */ - __set_errno (ERANGE); - H_ERRNO_SET (NETDB_INTERNAL); - status = NSS_STATUS_TRYAGAIN; - } - else - { - /* Copy the result to a safe place. */ - p = (char *) memcpy (buffer, value.data, value.size); - - /* Skip leading blanks. */ - while (isspace (*p)) - ++p; - - err = parse_line (p, result, buffer, buflen); - - if (err == 0) - { - /* If the key begins with '0' we are trying to get the next - entry. We want to ignore unparsable lines in this case. */ - if (((char *) key->data)[0] == '0') - { - /* Super magical return value. We need to tell our caller - that it should continue looping. This value cannot - happen in other cases. */ - status = NSS_STATUS_RETURN; - } - else - { - H_ERRNO_SET (HOST_NOT_FOUND); - status = NSS_STATUS_NOTFOUND; - } - } - else if (err < 0) - { - H_ERRNO_SET (NETDB_INTERNAL); - status = NSS_STATUS_TRYAGAIN; - } - else - status = NSS_STATUS_SUCCESS; - } - - if (! keep_db) - internal_endent (&db); - - return status; -} - - -/* Macro for defining lookup functions for this DB-based database. - - NAME is the name of the lookup; e.g. `pwnam'. - - KEYPATTERN gives `printf' args to construct a key string; - e.g. `(".%s", name)'. - - KEYSIZE gives the allocation size of a buffer to construct it in; - e.g. `1 + strlen (name)'. - - PROTO describes the arguments for the lookup key; - e.g. `const char *name'. - - BREAK_IF_MATCH is ignored, but used by ../nss_files/files-XXX.c. */ - -#define DB_LOOKUP(name, keysize, keypattern, break_if_match, proto...) \ -enum nss_status \ -_nss_db_get##name##_r (proto, \ - struct STRUCTURE *result, \ - char *buffer, size_t buflen H_ERRNO_PROTO)\ -{ \ - DBT key; \ - enum nss_status status; \ - const size_t size = (keysize) + 1; \ - key.data = __alloca (size); \ - key.size = KEYPRINTF keypattern; \ - key.flags = 0; \ - __libc_lock_lock (lock); \ - status = lookup (&key, result, buffer, buflen H_ERRNO_ARG); \ - __libc_lock_unlock (lock); \ - return status; \ -} - -#define KEYPRINTF(pattern, args...) snprintf (key.data, size, pattern ,##args) - - - - -/* Return the next entry from the database file, doing locking. */ -enum nss_status -CONCAT(_nss_db_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer, - size_t buflen H_ERRNO_PROTO) -{ - /* Return next entry in host file. */ - enum nss_status status; - char buf[20]; - DBT key; - - __libc_lock_lock (lock); - - /* Loop until we find a valid entry or hit EOF. See above for the - special meaning of the status value. */ - do - { - key.size = snprintf (key.data = buf, sizeof buf, "0%u", entidx++); - key.flags = 0; - status = lookup (&key, result, buffer, buflen H_ERRNO_ARG); - if (status == NSS_STATUS_TRYAGAIN -#ifdef NEED_H_ERRNO - && *herrnop == NETDB_INTERNAL -#endif - && errno == ERANGE) - /* Give the user a chance to get the same entry with a larger - buffer. */ - --entidx; - } - while (status == NSS_STATUS_RETURN); - - __libc_lock_unlock (lock); - - return status; -} |