[lxc-devel] [PATCH 4/6] lxc-unshare: Move functions to determine clone flags from command line options to namespace.c

[Christian Seiler]

In order to be able to reuse code in lxc-attach, the functions
lxc_namespace_2_cloneflag and lxc_fill_namespace_flags are moved from
lxc_unshare.c to namespace.c.

Signed-off-by: Christian Seiler <christian at iwakd.de>
Cc: Daniel Lezcano <daniel.lezcano at free.fr>
Cc: Serge Hallyn <serge.hallyn at canonical.com>
---
 src/lxc/lxc_unshare.c |   45 ---------------------------------------------
 src/lxc/namespace.c   |   45 +++++++++++++++++++++++++++++++++++++++++++++
 src/lxc/namespace.h   |    3 +++
 3 files changed, 48 insertions(+), 45 deletions(-)

diff --git a/src/lxc/lxc_unshare.c b/src/lxc/lxc_unshare.c
index 498d6e0..3a848b2 100644
--- a/src/lxc/lxc_unshare.c
+++ b/src/lxc/lxc_unshare.c
@@ -84,51 +84,6 @@ static uid_t lookup_user(const char *optarg)
 	return uid;
 }
 
-static char *namespaces_list[] = {
-	"MOUNT", "PID", "UTSNAME", "IPC",
-	"USER", "NETWORK"
-};
-static int cloneflags_list[] = {
-	CLONE_NEWNS, CLONE_NEWPID, CLONE_NEWUTS, CLONE_NEWIPC,
-	CLONE_NEWUSER, CLONE_NEWNET
-};
-
-static int lxc_namespace_2_cloneflag(char *namespace)
-{
-	int i, len;
-	len = sizeof(namespaces_list)/sizeof(namespaces_list[0]);
-	for (i = 0; i < len; i++)
-		if (!strcmp(namespaces_list[i], namespace))
-			return cloneflags_list[i];
-
-	ERROR("invalid namespace name %s", namespace);
-	return -1;
-}
-
-static int lxc_fill_namespace_flags(char *flaglist, int *flags)
-{
-	char *token, *saveptr = NULL;
-	int aflag;
-
-	if (!flaglist) {
-		ERROR("need at least one namespace to unshare");
-		return -1;
-	}
-
-	token = strtok_r(flaglist, "|", &saveptr);
-	while (token) {
-
-		aflag = lxc_namespace_2_cloneflag(token);
-		if (aflag < 0)
-			return -1;
-
-		*flags |= aflag;
-
-		token = strtok_r(NULL, "|", &saveptr);
-	}
-	return 0;
-}
-
 
 struct start_arg {
 	char ***args;
diff --git a/src/lxc/namespace.c b/src/lxc/namespace.c
index 3e6fc3a..3fa027b 100644
--- a/src/lxc/namespace.c
+++ b/src/lxc/namespace.c
@@ -69,3 +69,48 @@ pid_t lxc_clone(int (*fn)(void *), void *arg, int flags)
 
 	return ret;
 }
+
+static char *namespaces_list[] = {
+	"MOUNT", "PID", "UTSNAME", "IPC",
+	"USER", "NETWORK"
+};
+static int cloneflags_list[] = {
+	CLONE_NEWNS, CLONE_NEWPID, CLONE_NEWUTS, CLONE_NEWIPC,
+	CLONE_NEWUSER, CLONE_NEWNET
+};
+
+int lxc_namespace_2_cloneflag(char *namespace)
+{
+	int i, len;
+	len = sizeof(namespaces_list)/sizeof(namespaces_list[0]);
+	for (i = 0; i < len; i++)
+		if (!strcmp(namespaces_list[i], namespace))
+			return cloneflags_list[i];
+
+	ERROR("invalid namespace name %s", namespace);
+	return -1;
+}
+
+int lxc_fill_namespace_flags(char *flaglist, int *flags)
+{
+	char *token, *saveptr = NULL;
+	int aflag;
+
+	if (!flaglist) {
+		ERROR("need at least one namespace to unshare");
+		return -1;
+	}
+
+	token = strtok_r(flaglist, "|", &saveptr);
+	while (token) {
+
+		aflag = lxc_namespace_2_cloneflag(token);
+		if (aflag < 0)
+			return -1;
+
+		*flags |= aflag;
+
+		token = strtok_r(NULL, "|", &saveptr);
+	}
+	return 0;
+}
diff --git a/src/lxc/namespace.h b/src/lxc/namespace.h
index 5442dd3..04e81bb 100644
--- a/src/lxc/namespace.h
+++ b/src/lxc/namespace.h
@@ -50,4 +50,7 @@
 
 extern pid_t lxc_clone(int (*fn)(void *), void *arg, int flags);
 
+extern int lxc_namespace_2_cloneflag(char *namespace);
+extern int lxc_fill_namespace_flags(char *flaglist, int *flags);
+
 #endif
-- 
1.7.8.6