Author: araujo
Date: Wed Apr 13 03:36:34 2016
New Revision: 297907
URL: https://svnweb.freebsd.org/changeset/base/297907

Log:
  Convert ypldap_addr list to a tailq(queue(3)).
  
  Obtained from:        OpenBSD r1.11, r1.17 and r1.36

Modified:
  head/usr.sbin/ypldap/ldapclient.c
  head/usr.sbin/ypldap/ypldap.h
  head/usr.sbin/ypldap/ypldap_dns.c

Modified: head/usr.sbin/ypldap/ldapclient.c
==============================================================================
--- head/usr.sbin/ypldap/ldapclient.c   Wed Apr 13 02:04:09 2016        
(r297906)
+++ head/usr.sbin/ypldap/ldapclient.c   Wed Apr 13 03:36:34 2016        
(r297907)
@@ -57,18 +57,18 @@ int client_try_idm(struct env *, struct 
 int    client_addr_init(struct idm *);
 int    client_addr_free(struct idm *);
 
-struct aldap   *client_aldap_open(struct ypldap_addr *);
+struct aldap   *client_aldap_open(struct ypldap_addr_list *);
 
 /*
  * dummy wrapper to provide aldap_init with its fd's.
  */
 struct aldap *
-client_aldap_open(struct ypldap_addr *addr)
+client_aldap_open(struct ypldap_addr_list *addr)
 {
        int                      fd = -1;
        struct ypldap_addr       *p;
 
-       for (p = addr; p != NULL; p = p->next) {
+       TAILQ_FOREACH(p, addr, next) {
                char                     hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
                struct sockaddr         *sa = (struct sockaddr *)&p->ss;
 
@@ -99,7 +99,7 @@ client_addr_init(struct idm *idm)
         struct sockaddr_in6     *sa_in6;
         struct ypldap_addr         *h;
 
-        for (h = idm->idm_addr; h != NULL; h = h->next) {
+       TAILQ_FOREACH(h, &idm->idm_addr, next) {
                 switch (h->ss.ss_family) {
                 case AF_INET:
                         sa_in = (struct sockaddr_in *)&h->ss;
@@ -125,18 +125,14 @@ client_addr_init(struct idm *idm)
 int
 client_addr_free(struct idm *idm)
 {
-        struct ypldap_addr         *h, *p;
-
-       if (idm->idm_addr == NULL)
-               return (-1);
+        struct ypldap_addr         *h;
 
-       for (h = idm->idm_addr; h != NULL; h = p) {
-               p = h->next;
+       while (!TAILQ_EMPTY(&idm->idm_addr)) {
+               h = TAILQ_FIRST(&idm->idm_addr);
+               TAILQ_REMOVE(&idm->idm_addr, h, next);
                free(h);
        }
 
-       idm->idm_addr = NULL;
-
        return (0);
 }
 
@@ -200,8 +196,8 @@ client_dispatch_dns(int fd, short events
                                log_warnx("IMSG_HOST_DNS with invalid peerID");
                                break;
                        }
-                       if (idm->idm_addr != NULL) {
-                               log_warnx("IMSG_HOST_DNS but addr != NULL!");
+                       if (!TAILQ_EMPTY(&idm->idm_addr)) {
+                               log_warnx("IMSG_HOST_DNS but addrs set!");
                                break;
                        }
 
@@ -213,17 +209,10 @@ client_dispatch_dns(int fd, short events
 
                        data = (u_char *)imsg.data;
                        while (dlen >= sizeof(struct sockaddr_storage)) {
-                               if ((h = calloc(1, sizeof(struct ypldap_addr))) 
==
-                                   NULL)
+                               if ((h = calloc(1, sizeof(*h))) == NULL)
                                        fatal(NULL);
                                memcpy(&h->ss, data, sizeof(h->ss));
-
-                               if (idm->idm_addr == NULL)
-                                       h->next = NULL;
-                               else
-                                       h->next = idm->idm_addr;
-
-                               idm->idm_addr = h;
+                               TAILQ_INSERT_HEAD(&idm->idm_addr, h, next);
 
                                data += sizeof(h->ss);
                                dlen -= sizeof(h->ss);
@@ -588,7 +577,7 @@ client_try_idm(struct env *env, struct i
        struct aldap            *al;
 
        where = "connect";
-       if ((al = client_aldap_open(idm->idm_addr)) == NULL)
+       if ((al = client_aldap_open(&idm->idm_addr)) == NULL)
                return (-1);
 
        if (idm->idm_flags & F_NEEDAUTH) {

Modified: head/usr.sbin/ypldap/ypldap.h
==============================================================================
--- head/usr.sbin/ypldap/ypldap.h       Wed Apr 13 02:04:09 2016        
(r297906)
+++ head/usr.sbin/ypldap/ypldap.h       Wed Apr 13 03:36:34 2016        
(r297907)
@@ -42,9 +42,10 @@ enum imsg_type {
 };
 
 struct ypldap_addr {
-       struct ypldap_addr              *next;
-       struct sockaddr_storage          ss;
+       TAILQ_ENTRY(ypldap_addr)        next;
+       struct sockaddr_storage         ss;
 };
+TAILQ_HEAD(ypldap_addr_list, ypldap_addr);
 
 enum {
        PROC_MAIN,
@@ -91,7 +92,7 @@ struct idm {
        enum client_state                idm_state;
        u_int32_t                        idm_flags; /* lower 20 reserved */
        u_int32_t                        idm_list;
-       struct ypldap_addr              *idm_addr;
+       struct ypldap_addr_list          idm_addr;
        in_port_t                        idm_port;
        char                             idm_binddn[LINE_WIDTH];
        char                             idm_bindcred[LINE_WIDTH];

Modified: head/usr.sbin/ypldap/ypldap_dns.c
==============================================================================
--- head/usr.sbin/ypldap/ypldap_dns.c   Wed Apr 13 02:04:09 2016        
(r297906)
+++ head/usr.sbin/ypldap/ypldap_dns.c   Wed Apr 13 03:36:34 2016        
(r297907)
@@ -48,7 +48,7 @@ struct imsgev         *iev_dns;
 void   dns_dispatch_imsg(int, short, void *);
 void   dns_sig_handler(int, short, void *);
 void   dns_shutdown(void);
-int    host_dns(const char *s, struct ypldap_addr **hn);
+int    host_dns(const char *, struct ypldap_addr_list *);
 
 void
 dns_sig_handler(int sig, short event, void *p)
@@ -129,7 +129,8 @@ dns_dispatch_imsg(int fd, short events, 
        struct imsg              imsg;
        int                      n, cnt;
        char                    *name;
-       struct ypldap_addr      *h, *hn;
+       struct ypldap_addr_list hn = TAILQ_HEAD_INITIALIZER(hn);
+       struct ypldap_addr      *h;
        struct ibuf             *buf;
        struct env              *env = p;
        struct imsgev           *iev = env->sc_iev;
@@ -176,12 +177,11 @@ dns_dispatch_imsg(int fd, short events, 
                        if (buf == NULL)
                                break;
                        if (cnt > 0) {
-                               h = hn;
-                               while (h != NULL) {
+                               while(!TAILQ_EMPTY(&hn)) {
+                                       h = TAILQ_FIRST(&hn);
+                                       TAILQ_REMOVE(&hn, h, next);
                                        imsg_add(buf, &h->ss, sizeof(h->ss));
-                                       hn = h->next;
                                        free(h);
-                                       h = hn;
                                }
                        }
 
@@ -204,13 +204,13 @@ done:
 }
 
 int
-host_dns(const char *s, struct ypldap_addr **hn)
+host_dns(const char *s, struct ypldap_addr_list *hn)
 {
        struct addrinfo          hints, *res0, *res;
        int                      error, cnt = 0;
        struct sockaddr_in      *sa_in;
        struct sockaddr_in6     *sa_in6;
-       struct ypldap_addr      *h, *hh = NULL;
+       struct ypldap_addr      *h;
 
        bzero(&hints, sizeof(hints));
        hints.ai_family = PF_UNSPEC;
@@ -243,12 +243,9 @@ host_dns(const char *s, struct ypldap_ad
                            res->ai_addr)->sin6_addr, sizeof(struct in6_addr));
                }
 
-               h->next = hh;
-               hh = h;
+               TAILQ_INSERT_HEAD(hn, h, next);
                cnt++;
        }
        freeaddrinfo(res0);
-
-       *hn = hh;
        return (cnt);
 }
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