[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/nscd/nscd.h b/ap/libc/glibc/glibc-2.23/nscd/nscd.h
new file mode 100644
index 0000000..ddc780f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/nscd/nscd.h
@@ -0,0 +1,377 @@
+/* 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.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _NSCD_H
+#define _NSCD_H 1
+
+#include <pthread.h>
+#include <stdbool.h>
+#include <time.h>
+#include <sys/uio.h>
+
+/* The declarations for the request and response types are in the file
+ "nscd-client.h", which should contain everything needed by client
+ functions. */
+#include "nscd-client.h"
+
+
+/* Handle databases. */
+typedef enum
+{
+ pwddb,
+ grpdb,
+ hstdb,
+ servdb,
+ netgrdb,
+ lastdb
+} dbtype;
+
+
+/* Default limit on the number of times a value gets reloaded without
+ being used in the meantime. NSCD does not throw a value out as
+ soon as it times out. It tries to reload the value from the
+ server. Only if the value has not been used for so many rounds it
+ is removed. */
+#define DEFAULT_RELOAD_LIMIT 5
+
+
+/* Time before restarting the process in paranoia mode. */
+#define RESTART_INTERVAL (60 * 60)
+
+
+/* Stack size for worker threads. */
+#define NSCD_THREAD_STACKSIZE 1024 * 1024 * (sizeof (void *) / 4)
+
+/* Maximum size of stack frames we allow the thread to use. We use
+ 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
+{
+ pthread_rwlock_t lock;
+ pthread_cond_t prune_cond;
+ pthread_mutex_t prune_lock;
+ pthread_mutex_t prune_run_lock;
+ time_t wakeup_time;
+
+ int enabled;
+ int check_file;
+ int clear_cache;
+ int persistent;
+ int shared;
+ int propagate;
+ struct traced_file *traced_files;
+ const char *db_filename;
+ size_t suggested_module;
+ size_t max_db_size;
+
+ unsigned long int postimeout; /* In seconds. */
+ unsigned long int negtimeout; /* In seconds. */
+
+ int wr_fd; /* Writable file descriptor. */
+ int ro_fd; /* Unwritable file descriptor. */
+
+ const struct iovec *disabled_iov;
+
+ struct database_pers_head *head;
+ char *data;
+ size_t memsize;
+ pthread_mutex_t memlock;
+ bool mmap_used;
+ bool last_alloc_failed;
+};
+
+
+/* Paths of the file for the persistent storage. */
+#define _PATH_NSCD_PASSWD_DB "/var/db/nscd/passwd"
+#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"
+
+/* Maximum alignment requirement we will encounter. */
+#define BLOCK_ALIGN_LOG 3
+#define BLOCK_ALIGN (1 << BLOCK_ALIGN_LOG)
+#define BLOCK_ALIGN_M1 (BLOCK_ALIGN - 1)
+
+/* Default value for the maximum size of the database files. */
+#define DEFAULT_MAX_DB_SIZE (32 * 1024 * 1024)
+
+/* Number of bytes of data we initially reserve for each hash table bucket. */
+#define DEFAULT_DATASIZE_PER_BUCKET 1024
+
+/* Default module of hash table. */
+#define DEFAULT_SUGGESTED_MODULE 211
+
+
+/* Number of seconds between two cache pruning runs if we do not have
+ better information when it is really needed. */
+#define CACHE_PRUNE_INTERVAL 15
+
+
+/* Global variables. */
+extern struct database_dyn dbs[lastdb] attribute_hidden;
+extern const char *const dbnames[lastdb];
+extern const char *const serv2str[LASTREQ];
+
+extern const struct iovec pwd_iov_disabled;
+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. */
+extern int nthreads;
+/* 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;
+
+/* Name and UID of user who is allowed to request statistics. */
+extern const char *stat_user;
+extern uid_t stat_uid;
+
+/* Time the server was started. */
+extern time_t start_time;
+
+/* Number of times clients had to wait. */
+extern unsigned long int client_queued;
+
+/* Maximum needed alignment. */
+extern const size_t block_align;
+
+/* Number of times a value is reloaded without being used. UINT_MAX
+ means unlimited. */
+extern unsigned int reload_count;
+
+/* Pagesize minus one. */
+extern uintptr_t pagesize_m1;
+
+/* Nonzero if paranoia mode is enabled. */
+extern int paranoia;
+/* Time after which the process restarts. */
+extern time_t restart_time;
+/* How much time between restarts. */
+extern time_t restart_interval;
+/* Old current working directory. */
+extern const char *oldcwd;
+/* Old user and group ID. */
+extern uid_t old_uid;
+extern gid_t old_gid;
+
+
+/* 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__));
+
+/* nscd_conf.c */
+extern int nscd_parse_file (const char *fname,
+ struct database_dyn dbs[lastdb]);
+
+/* nscd_stat.c */
+extern void send_stats (int fd, struct database_dyn dbs[lastdb]);
+extern int receive_print_stats (void) __attribute__ ((__noreturn__));
+
+/* cache.c */
+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,
+ struct database_dyn *table, uid_t owner,
+ bool prune_wakeup);
+extern time_t prune_cache (struct database_dyn *table, time_t now, int fd);
+
+/* pwdcache.c */
+extern void addpwbyname (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern void addpwbyuid (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern time_t readdpwbyname (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern time_t readdpwbyuid (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
+/* grpcache.c */
+extern void addgrbyname (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern void addgrbygid (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern time_t readdgrbyname (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern time_t readdgrbygid (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
+/* hstcache.c */
+extern void addhstbyname (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern void addhstbyaddr (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern void addhstbynamev6 (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+extern void addhstbyaddrv6 (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+extern time_t readdhstbyname (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern time_t readdhstbyaddr (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern time_t readdhstbynamev6 (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern time_t readdhstbyaddrv6 (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
+/* aicache.c */
+extern void addhstai (struct database_dyn *db, int fd, request_header *req,
+ void *key, uid_t uid);
+extern time_t readdhstai (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
+
+/* initgrcache.c */
+extern void addinitgroups (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+extern time_t readdinitgroups (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+
+/* servicecache.c */
+extern void addservbyname (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+extern time_t readdservbyname (struct database_dyn *db, struct hashentry *he,
+ struct datahead *dh);
+extern void addservbyport (struct database_dyn *db, int fd,
+ request_header *req, void *key, uid_t uid);
+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);
+extern void gc (struct database_dyn *db);
+
+
+/* nscd_setup_thread.c */
+extern int setup_thread (struct database_dyn *db);
+
+
+/* Special version of TEMP_FAILURE_RETRY for functions returning error
+ values. */
+#define TEMP_FAILURE_RETRY_VAL(expression) \
+ (__extension__ \
+ ({ long int __result; \
+ do __result = (long int) (expression); \
+ while (__result == EINTR); \
+ __result; }))
+
+#endif /* nscd.h */