ifupdown: support post-up / pre-down hooks

function                                             old     new   delta
set_environ                                          330     371     +41
ifupdown_main                                       2156    2194     +38
iface_up                                              97     113     +16
iface_down                                            97     113     +16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 111/0)             Total: 111 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 382033038..abc6b5813 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -891,6 +891,8 @@ static struct interfaces_file_t *read_interfaces(const char *filename)
                                 if (strcmp(first_word, "up") != 0
                                  && strcmp(first_word, "down") != 0
                                  && strcmp(first_word, "pre-up") != 0
+                                 && strcmp(first_word, "pre-down") != 0
+                                 && strcmp(first_word, "post-up") != 0
                                  && strcmp(first_word, "post-down") != 0
                                 ) {
                                         int i;
@@ -987,6 +989,8 @@ static void set_environ(struct interface_defn_t *iface, const char *mode)
                 if (strcmp(iface->option[i].name, "up") == 0
                  || strcmp(iface->option[i].name, "down") == 0
                  || strcmp(iface->option[i].name, "pre-up") == 0
+                 || strcmp(iface->option[i].name, "pre-down") == 0
+                 || strcmp(iface->option[i].name, "post-up") == 0
                  || strcmp(iface->option[i].name, "post-down") == 0
                 ) {
                         continue;
@@ -1056,6 +1060,7 @@ static int iface_up(struct interface_defn_t *iface)
         if (!execute_all(iface, "pre-up")) return 0;
         if (!iface->method->up(iface, doit)) return 0;
         if (!execute_all(iface, "up")) return 0;
+        if (!execute_all(iface, "post-up")) return 0;
         return 1;
 }
 
@@ -1063,6 +1068,7 @@ 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, "pre-down")) return 0;
         if (!execute_all(iface, "down")) return 0;
         if (!iface->method->down(iface, doit)) return 0;
         if (!execute_all(iface, "post-down")) return 0;