[PATCH iproute2] Add support for rt_tables.d

[David Ahern]

Add support for reading table id/name mappings from rt_tables.d
directory.

Signed-off-by: David Ahern <d...@cumulusnetworks.com>
---
 lib/rt_names.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/rt_names.c b/lib/rt_names.c
index e87c65dad39e..d835ff9c7ee0 100644
--- a/lib/rt_names.c
+++ b/lib/rt_names.c
@@ -17,6 +17,7 @@
 #include <string.h>
 #include <sys/time.h>
 #include <sys/socket.h>
+#include <dirent.h>
 
 #include <asm/types.h>
 #include <linux/rtnetlink.h>
@@ -339,6 +340,8 @@ static int rtnl_rttable_init;
 
 static void rtnl_rttable_initialize(void)
 {
+       struct dirent *de;
+       DIR *d;
        int i;
 
        rtnl_rttable_init = 1;
@@ -348,6 +351,21 @@ static void rtnl_rttable_initialize(void)
        }
        rtnl_hash_initialize(CONFDIR "/rt_tables",
                             rtnl_rttable_hash, 256);
+
+       d = opendir(CONFDIR "/rt_tables.d");
+       if (!d)
+               return;
+
+       while ((de = readdir(d)) != NULL) {
+               char path[PATH_MAX];
+
+               if (*de->d_name == '.')
+                       continue;
+
+               snprintf(path, sizeof(path), CONFDIR "/rt_tables.d/%s", 
de->d_name);
+               rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
+       }
+       closedir(d);
 }
 
 const char * rtnl_rttable_n2a(__u32 id, char *buf, int len)
-- 
1.9.1

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