Date: Sun, 18 Apr 2010 04:07:33 +0000 (UTC) From: Hajimu UMEMOTO <ume@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r206784 - in stable/8: include lib/libc/net share/man/man5 Message-ID: <201004180407.o3I47XDC065411@svn.freebsd.org>
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Author: ume Date: Sun Apr 18 04:07:32 2010 New Revision: 206784 URL: http://svn.freebsd.org/changeset/base/206784 Log: MFC r206155, r206267: Add capability to use a db version of services. It is enabled by specifying `db' as source of services in /etc/nsswitch.conf. Modified: stable/8/include/netdb.h stable/8/include/nsswitch.h stable/8/lib/libc/net/getservent.c stable/8/lib/libc/net/nsdispatch.3 stable/8/share/man/man5/nsswitch.conf.5 stable/8/share/man/man5/services.5 Directory Properties: stable/8/include/ (props changed) stable/8/lib/libc/ (props changed) stable/8/lib/libc/stdtime/ (props changed) stable/8/share/man/man5/ (props changed) Modified: stable/8/include/netdb.h ============================================================================== --- stable/8/include/netdb.h Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/include/netdb.h Sun Apr 18 04:07:32 2010 (r206784) @@ -86,6 +86,7 @@ typedef __uint32_t uint32_t; #define _PATH_NETWORKS "/etc/networks" #define _PATH_PROTOCOLS "/etc/protocols" #define _PATH_SERVICES "/etc/services" +#define _PATH_SERVICES_DB "/var/db/services.db" #define h_errno (*__h_errno()) Modified: stable/8/include/nsswitch.h ============================================================================== --- stable/8/include/nsswitch.h Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/include/nsswitch.h Sun Apr 18 04:07:32 2010 (r206784) @@ -65,6 +65,7 @@ * currently implemented sources */ #define NSSRC_FILES "files" /* local files */ +#define NSSRC_DB "db" /* database */ #define NSSRC_DNS "dns" /* DNS; IN for hosts, HS for others */ #define NSSRC_NIS "nis" /* YP/NIS */ #define NSSRC_COMPAT "compat" /* passwd,group in YP compat mode */ Modified: stable/8/lib/libc/net/getservent.c ============================================================================== --- stable/8/lib/libc/net/getservent.c Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/lib/libc/net/getservent.c Sun Apr 18 04:07:32 2010 (r206784) @@ -37,7 +37,9 @@ __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <sys/socket.h> #include <arpa/inet.h> +#include <db.h> #include <errno.h> +#include <fcntl.h> #include <limits.h> #include <netdb.h> #include <nsswitch.h> @@ -94,6 +96,19 @@ NSS_TLS_HANDLING(files); static int files_servent(void *, void *, va_list); static int files_setservent(void *, void *, va_list); +/* db backend declarations */ +struct db_state +{ + DB *db; + int stayopen; + int keynum; +}; +static void db_endstate(void *); +NSS_TLS_HANDLING(db); + +static int db_servent(void *, void *, va_list); +static int db_setservent(void *, void *, va_list); + #ifdef YP /* nis backend declarations */ static int nis_servent(void *, void *, va_list); @@ -263,6 +278,8 @@ files_servent(void *retval, void *mdata, { NULL, 0 } }; ns_dtab compat_dtab[] = { + { NSSRC_DB, db_servent, + (void *)((struct servent_mdata *)mdata)->how }, #ifdef YP { NSSRC_NIS, nis_servent, (void *)((struct servent_mdata *)mdata)->how }, @@ -452,6 +469,183 @@ files_setservent(void *retval, void *mda return (NS_UNAVAIL); } +/* db backend implementation */ +static void +db_endstate(void *p) +{ + DB *db; + + if (p == NULL) + return; + + db = ((struct db_state *)p)->db; + if (db != NULL) + db->close(db); + + free(p); +} + +static int +db_servent(void *retval, void *mdata, va_list ap) +{ + char buf[BUFSIZ]; + DBT key, data, *result; + DB *db; + + struct db_state *st; + int rv; + int stayopen; + + enum nss_lookup_type how; + char *name; + char *proto; + int port; + + struct servent *serv; + char *buffer; + size_t bufsize; + int *errnop; + + name = NULL; + proto = NULL; + how = (enum nss_lookup_type)mdata; + switch (how) { + case nss_lt_name: + name = va_arg(ap, char *); + proto = va_arg(ap, char *); + break; + case nss_lt_id: + port = va_arg(ap, int); + proto = va_arg(ap, char *); + break; + case nss_lt_all: + break; + default: + return NS_NOTFOUND; + }; + + serv = va_arg(ap, struct servent *); + buffer = va_arg(ap, char *); + bufsize = va_arg(ap, size_t); + errnop = va_arg(ap,int *); + + *errnop = db_getstate(&st); + if (*errnop != 0) + return (NS_UNAVAIL); + + if (how == nss_lt_all && st->keynum < 0) + return (NS_NOTFOUND); + + if (st->db == NULL) { + st->db = dbopen(_PATH_SERVICES_DB, O_RDONLY, 0, DB_HASH, NULL); + if (st->db == NULL) { + *errnop = errno; + return (NS_UNAVAIL); + } + } + + stayopen = (how == nss_lt_all) ? 1 : st->stayopen; + db = st->db; + + do { + switch (how) { + case nss_lt_name: + key.data = buf; + if (proto == NULL) + key.size = snprintf(buf, sizeof(buf), + "\376%s", name); + else + key.size = snprintf(buf, sizeof(buf), + "\376%s/%s", name, proto); + key.size++; + if (db->get(db, &key, &data, 0) != 0 || + db->get(db, &data, &key, 0) != 0) { + rv = NS_NOTFOUND; + goto db_fin; + } + result = &key; + break; + case nss_lt_id: + key.data = buf; + port = htons(port); + if (proto == NULL) + key.size = snprintf(buf, sizeof(buf), + "\377%d", port); + else + key.size = snprintf(buf, sizeof(buf), + "\377%d/%s", port, proto); + key.size++; + if (db->get(db, &key, &data, 0) != 0 || + db->get(db, &data, &key, 0) != 0) { + rv = NS_NOTFOUND; + goto db_fin; + } + result = &key; + break; + case nss_lt_all: + key.data = buf; + key.size = snprintf(buf, sizeof(buf), "%d", + st->keynum++); + key.size++; + if (db->get(db, &key, &data, 0) != 0) { + st->keynum = -1; + rv = NS_NOTFOUND; + goto db_fin; + } + result = &data; + break; + } + + rv = parse_result(serv, buffer, bufsize, result->data, + result->size - 1, errnop); + + } while (!(rv & NS_TERMINATE) && how == nss_lt_all); + +db_fin: + if (!stayopen && st->db != NULL) { + db->close(db); + st->db = NULL; + } + + if (rv == NS_SUCCESS && retval != NULL) + *(struct servent **)retval = serv; + + return (rv); +} + +static int +db_setservent(void *retval, void *mdata, va_list ap) +{ + DB *db; + struct db_state *st; + int rv; + int f; + + rv = db_getstate(&st); + if (rv != 0) + return (NS_UNAVAIL); + + switch ((enum constants)mdata) { + case SETSERVENT: + f = va_arg(ap, int); + st->stayopen |= f; + st->keynum = 0; + break; + case ENDSERVENT: + db = st->db; + if (db != NULL) { + db->close(db); + st->db = NULL; + } + st->stayopen = 0; + break; + default: + break; + }; + + return (NS_UNAVAIL); +} + /* nis backend implementation */ #ifdef YP static void @@ -638,6 +832,7 @@ compat_setservent(void *retval, void *md { NULL, 0 } }; ns_dtab compat_dtab[] = { + { NSSRC_DB, db_setservent, mdata }, #ifdef YP { NSSRC_NIS, nis_setservent, mdata }, #endif @@ -924,6 +1119,7 @@ getservbyname_r(const char *name, const #endif /* NS_CACHING */ static const ns_dtab dtab[] = { { NSSRC_FILES, files_servent, (void *)&mdata }, + { NSSRC_DB, db_servent, (void *)nss_lt_name }, #ifdef YP { NSSRC_NIS, nis_servent, (void *)nss_lt_name }, #endif @@ -960,6 +1156,7 @@ getservbyport_r(int port, const char *pr #endif static const ns_dtab dtab[] = { { NSSRC_FILES, files_servent, (void *)&mdata }, + { NSSRC_DB, db_servent, (void *)nss_lt_id }, #ifdef YP { NSSRC_NIS, nis_servent, (void *)nss_lt_id }, #endif @@ -995,6 +1192,7 @@ getservent_r(struct servent *serv, char #endif static const ns_dtab dtab[] = { { NSSRC_FILES, files_servent, (void *)&mdata }, + { NSSRC_DB, db_servent, (void *)nss_lt_all }, #ifdef YP { NSSRC_NIS, nis_servent, (void *)nss_lt_all }, #endif @@ -1027,6 +1225,7 @@ setservent(int stayopen) #endif static const ns_dtab dtab[] = { { NSSRC_FILES, files_setservent, (void *)SETSERVENT }, + { NSSRC_DB, db_setservent, (void *)SETSERVENT }, #ifdef YP { NSSRC_NIS, nis_setservent, (void *)SETSERVENT }, #endif @@ -1051,6 +1250,7 @@ endservent() #endif static const ns_dtab dtab[] = { { NSSRC_FILES, files_setservent, (void *)ENDSERVENT }, + { NSSRC_DB, db_setservent, (void *)ENDSERVENT }, #ifdef YP { NSSRC_NIS, nis_setservent, (void *)ENDSERVENT }, #endif Modified: stable/8/lib/libc/net/nsdispatch.3 ============================================================================== --- stable/8/lib/libc/net/nsdispatch.3 Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/lib/libc/net/nsdispatch.3 Sun Apr 18 04:07:32 2010 (r206784) @@ -32,7 +32,7 @@ .\" .\" $FreeBSD$ .\" -.Dd January 22, 2007 +.Dd April 4, 2010 .Dt NSDISPATCH 3 .Os .Sh NAME @@ -176,6 +176,7 @@ While there is support for arbitrary sou .Bl -column NSSRC_COMPAT compat -offset indent .It Sy "#define value" .It Dv NSSRC_FILES Ta """files"" +.It Dv NSSRC_DB Ta """db"" .It Dv NSSRC_DNS Ta """dns"" .It Dv NSSRC_NIS Ta """nis"" .It Dv NSSRC_COMPAT Ta """compat"" Modified: stable/8/share/man/man5/nsswitch.conf.5 ============================================================================== --- stable/8/share/man/man5/nsswitch.conf.5 Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/share/man/man5/nsswitch.conf.5 Sun Apr 18 04:07:32 2010 (r206784) @@ -33,7 +33,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 23, 2008 +.Dd April 4, 2010 .Dt NSSWITCH.CONF 5 .Os .Sh NAME @@ -72,6 +72,8 @@ Local files, such as .Pa /etc/hosts , and .Pa /etc/passwd . +.It db +Local database. .It dns Internet Domain Name System. .Dq hosts Modified: stable/8/share/man/man5/services.5 ============================================================================== --- stable/8/share/man/man5/services.5 Sun Apr 18 03:52:41 2010 (r206783) +++ stable/8/share/man/man5/services.5 Sun Apr 18 04:07:32 2010 (r206784) @@ -32,7 +32,7 @@ .\" @(#)services.5 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd June 5, 1993 +.Dd April 4, 2010 .Dt SERVICES 5 .Os .Sh NAME @@ -65,6 +65,18 @@ not interpreted by the routines which se Service names may contain any printable character other than a field delimiter, newline, or comment character. +.Pp +If +.Dq db +is specified as source in the +.Xr nsswitch.conf 5 , +.Pa /var/db/services.db +is searched. +The database in +.Pa /var/db/services.db +needs to be updated with +.Xr services_mkdb 8 +after changes to the services file have been applied. .Sh NIS INTERACTION Access to the NIS .Pa services.byname @@ -84,6 +96,8 @@ file resides in .El .Sh SEE ALSO .Xr getservent 3 +.Xr nsswitch.conf 5 +.Xr services_mkdb 8 .Sh HISTORY The .Nm
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