diff options
Diffstat (limited to 'zebra/zebra_netns_id.c')
| -rw-r--r-- | zebra/zebra_netns_id.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/zebra/zebra_netns_id.c b/zebra/zebra_netns_id.c index c5e792bd77..966d6ed0d2 100644 --- a/zebra/zebra_netns_id.c +++ b/zebra/zebra_netns_id.c @@ -20,6 +20,7 @@ #include <zebra.h> #include "ns.h" +#include "vrf.h" #include "log.h" #if defined(HAVE_NETLINK) @@ -35,6 +36,9 @@ #include "zebra_netns_id.h" +/* default NS ID value used when VRF backend is not NETNS */ +#define NS_DEFAULT_INTERNAL 0 + /* in case NEWNSID not available, the NSID will be locally obtained */ #define NS_BASE_NSID 0 @@ -312,3 +316,40 @@ ns_id_t zebra_ns_id_get(const char *netnspath) return zebra_ns_id_get_fallback(netnspath); } #endif /* ! defined(HAVE_NETLINK) */ + +#ifdef HAVE_NETNS +static void zebra_ns_create_netns_directory(void) +{ + /* check that /var/run/netns is created */ + /* S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH */ + if (mkdir(NS_RUN_DIR, 0755)) { + if (errno != EEXIST) { + zlog_warn("NS check: failed to access %s", NS_RUN_DIR); + return; + } + } +} +#endif + +ns_id_t zebra_ns_id_get_default(void) +{ +#ifdef HAVE_NETNS + int fd; +#endif /* !HAVE_NETNS */ + +#ifdef HAVE_NETNS + if (vrf_is_backend_netns()) + zebra_ns_create_netns_directory(); + fd = open(NS_DEFAULT_NAME, O_RDONLY); + + if (fd == -1) + return NS_DEFAULT_INTERNAL; + if (!vrf_is_backend_netns()) + return NS_DEFAULT_INTERNAL; + close(fd); + return zebra_ns_id_get((char *)NS_DEFAULT_NAME); +#else /* HAVE_NETNS */ + return NS_DEFAULT_INTERNAL; +#endif /* !HAVE_NETNS */ +} + |