Cleanup from Glenn McGrath.

git-svn-id: svn://busybox.net/trunk/busybox@14343 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 18 insertions, 46 deletions

diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index ad9b99b55..699fa7d06 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -53,13 +53,12 @@
 struct interface_defn_t;
 
 typedef int (execfn)(char *command);
-typedef int (command_set)(struct interface_defn_t *ifd, execfn *e);
 
 struct method_t
 {
         char *name;
-        command_set *up;
-        command_set *down;
+        int (*up)(struct interface_defn_t *ifd, execfn *e);
+        int (*down)(struct interface_defn_t *ifd, execfn *e);
 };
 
 struct address_family_t
@@ -92,15 +91,10 @@ struct variable_t
 
 struct interface_defn_t
 {
-        struct interface_defn_t *prev;
-        struct interface_defn_t *next;
-
-        char *iface;
         struct address_family_t *address_family;
         struct method_t *method;
 
-        int automatic;
-
+        char *iface;
         int max_options;
         int n_options;
         struct variable_t *option;
@@ -645,17 +639,6 @@ static struct method_t *get_method(struct address_family_t *af, char *name)
         return(NULL);
 }
 
-static int duplicate_if(struct interface_defn_t *ifa, struct interface_defn_t *ifb)
-{
-        if (strcmp(ifa->iface, ifb->iface) != 0) {
-                return(0);
-        }
-        if (ifa->address_family != ifb->address_family) {
-                return(0);
-        }
-        return(1);
-}
-
 static const llist_t *find_list_string(const llist_t *list, const char *string)
 {
         while (list) {
@@ -778,22 +761,19 @@ static struct interfaces_file_t *read_interfaces(const char *filename)
                                         return NULL;
                                 }
 
-                                currif->automatic = 1;
                                 currif->max_options = 0;
                                 currif->n_options = 0;
                                 currif->option = NULL;
 
                                 {
-                                        struct interface_defn_t *tmp;
                                         llist_t *iface_list;
-                                        iface_list = defn->ifaces;
-                                        while (iface_list) {
-                                                tmp = (struct interface_defn_t *) iface_list->data;
-                                                if (duplicate_if(tmp, currif)) {
+                                        for (iface_list = defn->ifaces; iface_list; iface_list = iface_list->link) {
+                                                struct interface_defn_t *tmp = (struct interface_defn_t *) iface_list->data;
+                                                if ((strcmp(tmp->iface, currif->iface) == 0) ||
+                                                        (tmp->address_family == currif->address_family)) {
                                                         bb_error_msg("duplicate interface \"%s\"", tmp->iface);
                                                         return NULL;
                                                 }
-                                                iface_list = iface_list->link;
                                         }
 
                                         defn->ifaces = llist_add_to_end(defn->ifaces, (char*)currif);
@@ -896,7 +876,7 @@ static struct interfaces_file_t *read_interfaces(const char *filename)
         return defn;
 }
 
-static char *setlocalenv(char *format, char *name, char *value)
+static char *setlocalenv(char *format, const char *name, const char *value)
 {
         char *result;
         char *here;
@@ -922,7 +902,7 @@ static char *setlocalenv(char *format, char *name, char *value)
         return result;
 }
 
-static void set_environ(struct interface_defn_t *iface, char *mode)
+static void set_environ(struct interface_defn_t *iface, const char *mode)
 {
         char **environend;
         int i;
@@ -989,20 +969,20 @@ static int doit(char *str)
         return (1);
 }
 
-static int execute_all(struct interface_defn_t *ifd, execfn *exec, const char *opt)
+static int execute_all(struct interface_defn_t *ifd, const char *opt)
 {
         int i;
         char *buf;
         for (i = 0; i < ifd->n_options; i++) {
                 if (strcmp(ifd->option[i].name, opt) == 0) {
-                        if (!(*exec) (ifd->option[i].value)) {
+                        if (!doit(ifd->option[i].value)) {
                                 return 0;
                         }
                 }
         }
 
         buf = bb_xasprintf("run-parts /etc/network/if-%s.d", opt);
-        if ((*exec)(buf) != 1) {
+        if (doit(buf) != 1) {
                 return 0;
         }
         return 1;
@@ -1016,9 +996,9 @@ static int iface_up(struct interface_defn_t *iface)
 {
         if (!iface->method->up(iface,check)) return -1;
         set_environ(iface, "start");
-        if (!execute_all(iface, doit, "pre-up")) return 0;
+        if (!execute_all(iface, "pre-up")) return 0;
         if (!iface->method->up(iface, doit)) return 0;
-        if (!execute_all(iface, doit, "up")) return 0;
+        if (!execute_all(iface, "up")) return 0;
         return 1;
 }
 
@@ -1026,9 +1006,9 @@ static int iface_down(struct interface_defn_t *iface)
 {
         if (!iface->method->down(iface,check)) return -1;
         set_environ(iface, "stop");
-        if (!execute_all(iface, doit, "down")) return 0;
+        if (!execute_all(iface, "down")) return 0;
         if (!iface->method->down(iface, doit)) return 0;
-        if (!execute_all(iface, doit, "post-down")) return 0;
+        if (!execute_all(iface, "post-down")) return 0;
         return 1;
 }
 
@@ -1373,7 +1353,7 @@ extern int ifupdown_main(int argc, char **argv)
                                         free(iface_state->data);
                                         iface_state->data = newiface;
                                 }
-                        } else if (cmds == iface_down) {
+                        } else {
                                 /* Remove an interface from the linked list */
                                 if (iface_state) {
                                         /* This needs to be done better */
@@ -1395,14 +1375,7 @@ extern int ifupdown_main(int argc, char **argv)
         if (!no_act) {
                 FILE *state_fp = NULL;
 
-                state_fp = bb_xfopen(statefile, "a+");
-
-                if (ftruncate(fileno(state_fp), 0) < 0) {
-                        bb_error_msg_and_die("failed to truncate statefile %s: %s", statefile, strerror(errno));
-                }
-
-                rewind(state_fp);
-
+                state_fp = bb_xfopen(statefile, "w");
                 while (state_list) {
                         if (state_list->data) {
                                 fputs(state_list->data, state_fp);
@@ -1410,7 +1383,6 @@ extern int ifupdown_main(int argc, char **argv)
                         }
                         state_list = state_list->link;
                 }
-                fflush(state_fp);
                 fclose(state_fp);
         }