netns: Rename & move get_netns_fd to lib

Renamed get_netns_fd -> netns_get_fd and moved to
lib/namespace.c
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

include/namespace.h

@@ -42,5 +42,6 @@ static int setns(int fd, int nstype)
 #endif /* HAVE_SETNS */
 
 extern int netns_switch(char *netns);
+extern int netns_get_fd(const char *netns);
 
 #endif /* __NAMESPACE_H__ */

ip/ip_common.h

@@ -87,7 +87,6 @@ struct link_util
 
 struct link_util *get_link_kind(const char *kind);
 struct link_util *get_link_slave_kind(const char *slave_kind);
-int get_netns_fd(const char *name);
 
 #ifndef	INFINITY_LIFE_TIME
 #define     INFINITY_LIFE_TIME      0xFFFFFFFFU

ip/iplink.c

@@ -32,6 +32,7 @@
 #include "rt_names.h"
 #include "utils.h"
 #include "ip_common.h"
+#include "namespace.h"
 
 #define IPLINK_IOCTL_COMPAT	1
 #ifndef LIBDIR
@@ -440,7 +441,7 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req,
 			NEXT_ARG();
 			if (netns != -1)
 				duparg("netns", *argv);
-			if ((netns = get_netns_fd(*argv)) >= 0)
+			if ((netns = netns_get_fd(*argv)) >= 0)
 				addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4);
 			else if (get_integer(&netns, *argv, 0) == 0)
 				addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4);

ip/ipnetns.c

@@ -31,21 +31,6 @@ static int usage(void)
 	exit(-1);
 }
 
-int get_netns_fd(const char *name)
-{
-	char pathbuf[MAXPATHLEN];
-	const char *path, *ptr;
-
-	path = name;
-	ptr = strchr(name, '/');
-	if (!ptr) {
-		snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
-			NETNS_RUN_DIR, name );
-		path = pathbuf;
-	}
-	return open(path, O_RDONLY);
-}
-
 static int netns_list(int argc, char **argv)
 {
 	struct dirent *entry;

lib/namespace.c

@@ -84,3 +84,18 @@ int netns_switch(char *name)
 	bind_etc(name);
 	return 0;
 }
+
+int netns_get_fd(const char *name)
+{
+	char pathbuf[MAXPATHLEN];
+	const char *path, *ptr;
+
+	path = name;
+	ptr = strchr(name, '/');
+	if (!ptr) {
+		snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
+			NETNS_RUN_DIR, name );
+		path = pathbuf;
+	}
+	return open(path, O_RDONLY);
+}