-/* Copyright (c) 1998-2001, 2003-2009, 2011 Free Software Foundation, Inc.
+/* Copyright (c) 1998-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#ifndef _NSCD_H
#define _NSCD_H 1
grpdb,
hstdb,
servdb,
+ netgrdb,
lastdb
} dbtype;
80% of the thread stack size. */
#define MAX_STACK_USE ((8 * NSCD_THREAD_STACKSIZE) / 10)
+/* Records the file registered per database that when changed
+ or modified requires invalidating the database. */
+struct traced_file
+{
+ /* Tracks the last modified time of the traced file. */
+ time_t mtime;
+ /* Support multiple registered files per database. */
+ struct traced_file *next;
+ int call_res_init;
+ /* Requires Inotify support to do anything useful. */
+#define TRACED_FILE 0
+#define TRACED_DIR 1
+ int inotify_descr[2];
+# ifndef PATH_MAX
+# define PATH_MAX 1024
+# endif
+ /* The parent directory is used to scan for creation/deletion. */
+ char dname[PATH_MAX];
+ /* Just the name of the file with no directory component. */
+ char *sfname;
+ /* The full-path name of the registered file. */
+ char fname[];
+};
+
+/* Initialize a `struct traced_file`. As input we need the name
+ of the file, and if invalidation requires calling res_init.
+ If CRINIT is 1 then res_init will be called after invalidation
+ or if the traced file is changed in any way, otherwise it will
+ not. */
+static inline void
+init_traced_file(struct traced_file *file, const char *fname, int crinit)
+{
+ char *dname;
+ file->mtime = 0;
+ file->inotify_descr[TRACED_FILE] = -1;
+ file->inotify_descr[TRACED_DIR] = -1;
+ strcpy (file->fname, fname);
+ /* Compute the parent directory name and store a copy. The copy makes
+ it much faster to add/remove watches while nscd is running instead
+ of computing this over and over again in a temp buffer. */
+ file->dname[0] = '\0';
+ dname = strrchr (fname, '/');
+ if (dname != NULL)
+ {
+ size_t len = (size_t)(dname - fname);
+ if (len > sizeof (file->dname))
+ abort ();
+ strncpy (file->dname, file->fname, len);
+ file->dname[len] = '\0';
+ }
+ /* The basename is the name just after the last forward slash. */
+ file->sfname = &dname[1];
+ file->call_res_init = crinit;
+}
+
+#define define_traced_file(id, filename) \
+static union \
+{ \
+ struct traced_file file; \
+ char buf[sizeof (struct traced_file) + sizeof (filename)]; \
+} id##_traced_file;
/* Structure describing dynamic part of one database. */
struct database_dyn
int enabled;
int check_file;
- int inotify_descr;
int clear_cache;
int persistent;
int shared;
int propagate;
- int reset_res;
- const char filename[16];
+ struct traced_file *traced_files;
const char *db_filename;
- time_t file_mtime;
size_t suggested_module;
size_t max_db_size;
#define _PATH_NSCD_GROUP_DB "/var/db/nscd/group"
#define _PATH_NSCD_HOSTS_DB "/var/db/nscd/hosts"
#define _PATH_NSCD_SERVICES_DB "/var/db/nscd/services"
+#define _PATH_NSCD_NETGROUP_DB "/var/db/nscd/netgroup"
/* Path used when not using persistent storage. */
#define _PATH_NSCD_XYZ_DB_TMP "/var/run/nscd/dbXXXXXX"
extern const struct iovec grp_iov_disabled;
extern const struct iovec hst_iov_disabled;
extern const struct iovec serv_iov_disabled;
+extern const struct iovec netgroup_iov_disabled;
/* Initial number of threads to run. */
/* Maximum number of threads to use. */
extern int max_nthreads;
+/* Inotify descriptor. */
+extern int inotify_fd;
+
/* User name to run server processes as. */
extern const char *server_user;
/* Prototypes for global functions. */
+/* Wrapper functions with error checking for standard functions. */
+#include <programs/xmalloc.h>
+
/* nscd.c */
extern void termination_handler (int signum) __attribute__ ((__noreturn__));
extern int nscd_open_socket (void);
+void notify_parent (int child_ret);
+void do_exit (int child_ret, int errnum, const char *format, ...);
/* connections.c */
extern void nscd_init (void);
+extern void register_traced_file (size_t dbidx, struct traced_file *finfo);
+#ifdef HAVE_INOTIFY
+extern void install_watches (struct traced_file *finfo);
+#endif
extern void close_sockets (void);
extern void start_threads (void) __attribute__ ((__noreturn__));
extern int receive_print_stats (void) __attribute__ ((__noreturn__));
/* cache.c */
-extern struct datahead *cache_search (request_type, void *key, size_t len,
- struct database_dyn *table,
+extern struct datahead *cache_search (request_type, const void *key,
+ size_t len, struct database_dyn *table,
uid_t owner);
extern int cache_add (int type, const void *key, size_t len,
struct datahead *packet, bool first,
extern time_t readdservbyport (struct database_dyn *db, struct hashentry *he,
struct datahead *dh);
+/* netgroupcache.c */
+extern void addinnetgr (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern time_t readdinnetgr (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern void addgetnetgrent (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+extern time_t readdgetnetgrent (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
/* mem.c */
extern void *mempool_alloc (struct database_dyn *db, size_t len,
int data_alloc);
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