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Add support for rt_tables.d

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

Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
This commit is contained in:
David Ahern 2015-11-24 13:20:01 -08:00 committed by Stephen Hemminger
parent 906ac5437a
commit 13ada95da4
2 changed files with 29 additions and 0 deletions
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3
etc/iproute2/rt_tables.d/README Normal file
View File

@ -0,0 +1,3 @@
Each file in this directory is an rt_tables configuration file. iproute2
commands scan this directory processing all files that end in '.conf'.

26
lib/rt_names.c
View File

@ -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 +351,29 @@ 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];
size_t len;
if (*de->d_name == '.')
continue;
/* only consider filenames ending in '.conf' */
len = strlen(de->d_name);
if (len <= 5)
continue;
if (strcmp(de->d_name + len - 5, ".conf"))
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)