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Diffstat (limited to 'glibc-compat/nss_files/files-XXX.c')
-rw-r--r--glibc-compat/nss_files/files-XXX.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/glibc-compat/nss_files/files-XXX.c b/glibc-compat/nss_files/files-XXX.c
deleted file mode 100644
index fde75a87b4..0000000000
--- a/glibc-compat/nss_files/files-XXX.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/* Common code for file-based databases in nss_files module.
- Copyright (C) 1996, 1997, 1998 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 <stdio.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <assert.h>
-#include <errno.h>
-#include <bits/libc-lock.h>
-#include "nsswitch.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 -- string of the database file's name ("hosts", "passwd").
-
- NEED_H_ERRNO - defined iff an arg `int *herrnop' is used.
-
- Also see files-parse.c.
-*/
-
-#define ENTNAME_r CONCAT(ENTNAME,_r)
-
-#define DATAFILE "/etc/" DATABASE
-
-#ifdef NEED_H_ERRNO
-# include <glibc-compat/include/netdb.h>
-# 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 stream open on the database file. */
-
-static FILE *stream;
-static fpos_t position;
-static enum { none, getent, getby } last_use;
-static int keep_stream;
-
-/* Open database file if not already opened. */
-static enum nss_status
-internal_setent (int stayopen)
-{
- enum nss_status status = NSS_STATUS_SUCCESS;
-
- if (stream == NULL)
- {
- stream = fopen (DATAFILE, "r");
-
- if (stream == NULL)
- status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
- else
- {
- /* We have to make sure the file is `closed on exec'. */
- int result, flags;
-
- result = flags = fcntl (fileno (stream), F_GETFD, 0);
- if (result >= 0)
- {
- flags |= FD_CLOEXEC;
- result = fcntl (fileno (stream), F_SETFD, flags);
- }
- if (result < 0)
- {
- /* Something went wrong. Close the stream and return a
- failure. */
- fclose (stream);
- stream = NULL;
- status = NSS_STATUS_UNAVAIL;
- }
- }
- }
- else
- rewind (stream);
-
- /* Remember STAYOPEN flag. */
- if (stream != NULL)
- keep_stream |= stayopen;
-
- return status;
-}
-
-
-/* Thread-safe, exported version of that. */
-enum nss_status
-CONCAT(_nss_files_set,ENTNAME) (int stayopen)
-{
- enum nss_status status;
-
- __libc_lock_lock (lock);
-
- status = internal_setent (stayopen);
-
- if (status == NSS_STATUS_SUCCESS && fgetpos (stream, &position) < 0)
- {
- fclose (stream);
- stream = NULL;
- status = NSS_STATUS_UNAVAIL;
- }
-
- last_use = getent;
-
- __libc_lock_unlock (lock);
-
- return status;
-}
-
-
-/* Close the database file. */
-static void
-internal_endent (void)
-{
- if (stream != NULL)
- {
- fclose (stream);
- stream = NULL;
- }
-}
-
-
-/* Thread-safe, exported version of that. */
-enum nss_status
-CONCAT(_nss_files_end,ENTNAME) (void)
-{
- __libc_lock_lock (lock);
-
- internal_endent ();
-
- /* Reset STAYOPEN flag. */
- keep_stream = 0;
-
- __libc_lock_unlock (lock);
-
- return NSS_STATUS_SUCCESS;
-}
-
-/* Parsing the database file into `struct STRUCTURE' data structures. */
-
-static enum nss_status
-internal_getent (struct STRUCTURE *result,
- char *buffer, int buflen H_ERRNO_PROTO)
-{
- char *p;
- struct parser_data *data = (void *) buffer;
- int linebuflen = buffer + buflen - data->linebuffer;
- int parse_result;
-
- if (buflen < (int) sizeof *data + 1)
- {
- __set_errno (ERANGE);
- H_ERRNO_SET (NETDB_INTERNAL);
- return NSS_STATUS_TRYAGAIN;
- }
-
- do
- {
- /* Terminate the line so that we can test for overflow. */
- data->linebuffer[linebuflen - 1] = '\xff';
-
- p = fgets (data->linebuffer, linebuflen, stream);
- if (p == NULL && feof (stream))
- {
- /* End of file or read error. */
- __set_errno (ENOENT);
- H_ERRNO_SET (HOST_NOT_FOUND);
- return NSS_STATUS_NOTFOUND;
- }
- else if (p == NULL || data->linebuffer[linebuflen - 1] != '\xff')
- {
- /* The line is too long. Give the user the opportunity to
- enlarge the buffer. */
- __set_errno (ERANGE);
- H_ERRNO_SET (NETDB_INTERNAL);
- return NSS_STATUS_TRYAGAIN;
- }
-
- /* Skip leading blanks. */
- while (isspace (*p))
- ++p;
- }
- while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */
- /* Parse the line. If it is invalid, loop to get the next
- line of the file to parse. */
- || ! (parse_result = parse_line (p, result, data, buflen)));
-
- /* Filled in RESULT with the next entry from the database file. */
- return parse_result == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_SUCCESS;
-}
-
-
-/* Return the next entry from the database file, doing locking. */
-enum nss_status
-CONCAT(_nss_files_get,ENTNAME_r) (struct STRUCTURE *result,
- char *buffer, size_t buflen H_ERRNO_PROTO)
-{
- /* Return next entry in host file. */
- enum nss_status status = NSS_STATUS_SUCCESS;
-
- __libc_lock_lock (lock);
-
- /* Be prepared that the set*ent function was not called before. */
- if (stream == NULL)
- {
- status = internal_setent (0);
-
- if (status == NSS_STATUS_SUCCESS && fgetpos (stream, &position) < 0)
- {
- fclose (stream);
- stream = NULL;
- status = NSS_STATUS_UNAVAIL;
- }
- }
-
- if (status == NSS_STATUS_SUCCESS)
- {
- /* If the last use was not by the getent function we need the
- position the stream. */
- if (last_use != getent)
- {
- if (fsetpos (stream, &position) < 0)
- status = NSS_STATUS_UNAVAIL;
- else
- last_use = getent;
- }
-
- if (status == NSS_STATUS_SUCCESS)
- {
- status = internal_getent (result, buffer, buflen H_ERRNO_ARG);
-
- /* Remember this position if we were successful. If the
- operation failed we give the user a chance to repeat the
- operation (perhaps the buffer was too small). */
- if (status == NSS_STATUS_SUCCESS)
- fgetpos (stream, &position);
- else
- /* We must make sure we reposition the stream the next call. */
- last_use = none;
- }
- }
-
- __libc_lock_unlock (lock);
-
- return status;
-}
-
-/* Macro for defining lookup functions for this file-based database.
-
- NAME is the name of the lookup; e.g. `hostbyname'.
-
- KEYSIZE and KEYPATTERN are ignored here but used by ../nss_db/db-XXX.c.
-
- PROTO describes the arguments for the lookup key;
- e.g. `const char *hostname'.
-
- BREAK_IF_MATCH is a block of code which compares `struct STRUCTURE *result'
- to the lookup key arguments and does `break;' if they match. */
-
-#define DB_LOOKUP(name, keysize, keypattern, break_if_match, proto...) \
-enum nss_status \
-_nss_files_get##name##_r (proto, \
- struct STRUCTURE *result, \
- char *buffer, size_t buflen H_ERRNO_PROTO) \
-{ \
- enum nss_status status; \
- \
- __libc_lock_lock (lock); \
- \
- /* Reset file pointer to beginning or open file. */ \
- status = internal_setent (keep_stream); \
- \
- if (status == NSS_STATUS_SUCCESS) \
- { \
- /* Tell getent function that we have repositioned the file pointer. */ \
- last_use = getby; \
- \
- while ((status = internal_getent (result, buffer, buflen H_ERRNO_ARG)) \
- == NSS_STATUS_SUCCESS) \
- { break_if_match } \
- \
- if (! keep_stream) \
- internal_endent (); \
- } \
- \
- __libc_lock_unlock (lock); \
- \
- return status; \
-}
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