[BZ #5818]
* nscd/connections.c (dbs): Add initializers for .suggested_module. (verify_persistent_db): Remove one unnecessary test and add a new one for bad configuration. (nscd_init): Improve error reported when persistent database cannot be reused. * nscd/nscd.h (DEFAULT_SUGGESTED_MODULE): Define. * nscd/nscd_conf.c (nscd_parse_file): Provide default values for .suggested_module and .max_db_size and case config file says the values are zero. * nscd/nscd_helper.c (get_mapping): Fail if hash table module is zero.
This commit is contained in:
Ulrich Drepper
parent
0f749099e9
commit
27c377dd04
12
ChangeLog
12
ChangeLog
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@ -1,5 +1,17 @@
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2008-03-03 Ulrich Drepper <drepper@redhat.com>
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[BZ #5818]
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* nscd/connections.c (dbs): Add initializers for .suggested_module.
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(verify_persistent_db): Remove one unnecessary test and add a new one
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for bad configuration.
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(nscd_init): Improve error reported when persistent database cannot
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be reused.
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* nscd/nscd.h (DEFAULT_SUGGESTED_MODULE): Define.
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* nscd/nscd_conf.c (nscd_parse_file): Provide default values for
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.suggested_module and .max_db_size and case config file says the
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values are zero.
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* nscd/nscd_helper.c (get_mapping): Fail if hash table module is zero.
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[BZ #5854]
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* nis/ypclnt.c (yp_order): Fix handling of return value of
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do_ypcall_tr call.
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@ -1,6 +1,5 @@
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/* Inner loops of cache daemon.
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Copyright (C) 1998-2003, 2004, 2005, 2006, 2007, 2008
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Free Software Foundation, Inc.
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Copyright (C) 1998-2007, 2008 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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@ -112,7 +111,8 @@ struct database_dyn dbs[lastdb] =
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.propagate = 1,
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.shared = 0,
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.max_db_size = DEFAULT_MAX_DB_SIZE,
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.reset_res = 0,
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.suggested_module = DEFAULT_SUGGESTED_MODULE,
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.reset_res = 0,
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.filename = "/etc/passwd",
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.db_filename = _PATH_NSCD_PASSWD_DB,
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.disabled_iov = &pwd_iov_disabled,
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@ -131,6 +131,7 @@ struct database_dyn dbs[lastdb] =
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.propagate = 1,
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.shared = 0,
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.max_db_size = DEFAULT_MAX_DB_SIZE,
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.suggested_module = DEFAULT_SUGGESTED_MODULE,
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.reset_res = 0,
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.filename = "/etc/group",
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.db_filename = _PATH_NSCD_GROUP_DB,
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@ -150,6 +151,7 @@ struct database_dyn dbs[lastdb] =
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.propagate = 0, /* Not used. */
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.shared = 0,
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.max_db_size = DEFAULT_MAX_DB_SIZE,
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.suggested_module = DEFAULT_SUGGESTED_MODULE,
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.reset_res = 1,
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.filename = "/etc/hosts",
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.db_filename = _PATH_NSCD_HOSTS_DB,
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@ -169,6 +171,7 @@ struct database_dyn dbs[lastdb] =
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.propagate = 0, /* Not used. */
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.shared = 0,
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.max_db_size = DEFAULT_MAX_DB_SIZE,
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.suggested_module = DEFAULT_SUGGESTED_MODULE,
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.reset_res = 0,
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.filename = "/etc/services",
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.db_filename = _PATH_NSCD_SERVICES_DB,
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@ -346,7 +349,7 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr)
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struct database_pers_head head_copy = *head;
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/* Check that the header that was read matches the head in the database. */
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if (readhead != NULL && memcmp (head, readhead, sizeof (*head)) != 0)
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if (memcmp (head, readhead, sizeof (*head)) != 0)
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return 0;
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/* First some easy tests: make sure the database header is sane. */
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@ -356,6 +359,7 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr)
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This should cover daylight saving time changes. */
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|| head->timestamp > now + 60 * 60 + 60
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|| (head->gc_cycle & 1)
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|| head->module == 0
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|| (size_t) head->module > INT32_MAX / sizeof (ref_t)
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|| (size_t) head->data_size > INT32_MAX - head->module * sizeof (ref_t)
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|| head->first_free < 0
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@ -506,6 +510,7 @@ nscd_init (void)
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int fd = open (dbs[cnt].db_filename, O_RDWR | EXTRA_O_FLAGS);
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if (fd != -1)
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{
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char *msg = NULL;
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struct stat64 st;
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void *mem;
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size_t total;
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@ -514,23 +519,26 @@ nscd_init (void)
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sizeof (head)));
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if (n != sizeof (head) || fstat64 (fd, &st) != 0)
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{
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fail_db_errno:
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/* The code is single-threaded at this point so
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using strerror is just fine. */
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msg = strerror (errno);
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fail_db:
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dbg_log (_("invalid persistent database file \"%s\": %s"),
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dbs[cnt].db_filename, strerror (errno));
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dbs[cnt].db_filename, msg);
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unlink (dbs[cnt].db_filename);
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}
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else if (head.module == 0 && head.data_size == 0)
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{
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/* The file has been created, but the head has not been
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initialized yet. Remove the old file. */
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unlink (dbs[cnt].db_filename);
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/* The file has been created, but the head has not
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been initialized yet. */
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msg = _("uninitialized header");
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goto fail_db;
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}
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else if (head.header_size != (int) sizeof (head))
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{
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dbg_log (_("invalid persistent database file \"%s\": %s"),
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dbs[cnt].db_filename,
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_("header size does not match"));
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unlink (dbs[cnt].db_filename);
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msg = _("header size does not match");
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goto fail_db;
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}
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else if ((total = (sizeof (head)
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+ roundup (head.module * sizeof (ref_t),
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@ -539,10 +547,8 @@ nscd_init (void)
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> st.st_size
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|| total < sizeof (head))
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{
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dbg_log (_("invalid persistent database file \"%s\": %s"),
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dbs[cnt].db_filename,
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_("file size does not match"));
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unlink (dbs[cnt].db_filename);
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msg = _("file size does not match");
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goto fail_db;
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}
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/* Note we map with the maximum size allowed for the
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database. This is likely much larger than the
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@ -554,14 +560,12 @@ nscd_init (void)
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PROT_READ | PROT_WRITE,
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MAP_SHARED, fd, 0))
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== MAP_FAILED)
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goto fail_db;
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goto fail_db_errno;
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else if (!verify_persistent_db (mem, &head, cnt))
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{
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munmap (mem, total);
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dbg_log (_("invalid persistent database file \"%s\": %s"),
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dbs[cnt].db_filename,
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_("verification failed"));
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unlink (dbs[cnt].db_filename);
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msg = _("verification failed");
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goto fail_db;
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}
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else
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{
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@ -1,4 +1,4 @@
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/* Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007
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/* Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
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@ -120,6 +120,9 @@ struct database_dyn
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/* Number of bytes of data we initially reserve for each hash table bucket. */
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#define DEFAULT_DATASIZE_PER_BUCKET 1024
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/* Default module of hash table. */
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#define DEFAULT_SUGGESTED_MODULE 211
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/* Number of seconds between two cache pruning runs if we do not have
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better information when it is really needed. */
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@ -1,4 +1,4 @@
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/* Copyright (c) 1998, 2000, 2003-2006, 2007 Free Software Foundation, Inc.
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/* Copyright (c) 1998, 2000, 2003-2007, 2008 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
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@ -140,7 +140,8 @@ nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].suggested_module = atol (arg2);
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dbs[idx].suggested_module
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= atol (arg2) ?: DEFAULT_SUGGESTED_MODULE;
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}
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else if (strcmp (entry, "enable-cache") == 0)
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{
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@ -168,7 +169,7 @@ nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].max_db_size = atol (arg2);
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dbs[idx].max_db_size = atol (arg2) ?: DEFAULT_MAX_DB_SIZE;
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}
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else if (strcmp (entry, "logfile") == 0)
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set_logfile (arg1);
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@ -1,5 +1,4 @@
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/* Copyright (C) 1998-2002,2003,2004,2005,2006,2007
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Free Software Foundation, Inc.
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/* Copyright (C) 1998-2007, 2008 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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@ -339,6 +338,9 @@ get_mapping (request_type type, const char *key,
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if (__builtin_expect (head->version != DB_VERSION, 0)
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|| __builtin_expect (head->header_size != sizeof (*head), 0)
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/* Catch some misconfiguration. The server should catch
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them now but some older versions did not. */
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|| __builtin_expect (head->module == 0, 0)
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/* This really should not happen but who knows, maybe the update
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thread got stuck. */
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|| __builtin_expect (! head->nscd_certainly_running
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