From 731ba056be6f4fe0787e11c7733ef7d3ac9f43a6 Mon Sep 17 00:00:00 2001
From: Sapan Bhatia <sapanb@cs.princeton.edu>
Date: Mon, 6 Oct 2008 22:56:07 +0000
Subject: [PATCH] use util-vserver's style of config, not sapan's funky style.

---
 src/namespaces.c | 102 -----------------------------------------------
 src/netns.c      |  38 ++++++++++++++++++
 2 files changed, 38 insertions(+), 102 deletions(-)
 delete mode 100644 src/namespaces.c
 create mode 100644 src/netns.c

diff --git a/src/namespaces.c b/src/namespaces.c
deleted file mode 100644
index 9f89bcd..0000000
--- a/src/namespaces.c
+++ /dev/null
@@ -1,102 +0,0 @@
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include "vserver.h"
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <pwd.h>
-
-#ifdef CLONE_NEWNET
-#  define DECLARE_NS(X,Y) { #X, CLONE_NEW##X }
-#else
-#  warning CLONE_NEWNET not defined, using memorized value
-#  define DECLARE_NS(X,Y) { #X, Y }
-#endif
-
-#define     SPACE_DIR       "pl_spaces"
-
-static struct {
-    const char * const		id;
-    unsigned char		bit;
-} const NS2BIT[] = {
-    DECLARE_NS(NET,             32)
-
-    /* All entries between FIRST_NS and the last defined namespace
-     * must be filled in */
-    #define     FIRST_NS        32
-};
-
-int
-text2ns(const char *str)
-{
-  size_t	i;
-  for (i=0; i<sizeof(NS2BIT)/sizeof(NS2BIT[0]); ++i)
-    if (strcmp(NS2BIT[i].id, str)==0) return NS2BIT[i].bit;
-
-  return -1;
-}
-
-const char *
-ns2text(unsigned int bit)
-{
-  if ((size_t)bit>=sizeof(NS2BIT)/sizeof(NS2BIT[0])) return 0;
-  return NS2BIT[bit - FIRST_NS].id;
-}
-
-#define VSERVERCONF "/etc/vservers/"
-
-uint32_t
-get_space_flag(xid_t xid) {
-    char *ctx_space_dir, *space_name;
-    struct passwd *slice_user;
-    FILE *fp_in;
-    unsigned int bit;
-
-    slice_user = get_pwuid(xid);
-
-    if (!slice_user)
-        goto out_err1;
-
-    ctx_space_dir=(char *) malloc(sizeof(VSERVERCONF "/" SPACE_DIR "Z")+strlen(slice_user->pw_name));
-    if (!ctx_space_dir)
-        goto out_err1;
-
-    sprintf(ctx_space_dir,VSERVERCONF "%s/" SPACE_DIR, slice_user->pw_name);
-
-    fp_in = fopen(ctx_space_dir,"r");
-
-    if (!fp_in)
-        goto out_dontcare;
-
-    space_name=(char *) malloc(sizeof("GOBBLEDYGOOKZ"));
-
-    if (!space_name) {
-        goto out_err2;
-    }
-
-    fgets(space_name,sizeof("GOBBLEDYGOOKZ"),fp_in);
-
-    bit = text2ns(space_name);
-
-    free(space_name);
-    free(ctx_space_dir);
-    close(fp_in);
-
-    return ((1<<bit)>>1);
-
-out_err2:
-    free(ctx_space_dir);
-    close(fp_in);
-
-out_err1:
-    return 0;
-
-out_dontcare:
-    free(ctx_space_dir);
-    return 0;
-
-}
diff --git a/src/netns.c b/src/netns.c
new file mode 100644
index 0000000..eea16f9
--- /dev/null
+++ b/src/netns.c
@@ -0,0 +1,38 @@
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "vserver.h"
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <pwd.h>
+
+#define     SPACE_FILE      "/spaces/net"
+#define     VSERVERCONF     "/etc/vservers/"
+
+uint32_t
+get_space_flag(xid_t xid) {
+    char *ctx_space_file, *space_name;
+    struct passwd *slice_user;
+    uint32_t space_flag = 0;
+
+    slice_user = get_pwuid(xid);
+
+    if (!slice_user)
+        return 0;
+
+    ctx_space_file=(char *) malloc(sizeof(VSERVERCONF SPACE_FILE "Z")+strlen(slice_user->pw_name));
+    if (!ctx_space_file)
+        return 0;
+
+    sprintf(ctx_space_file,VSERVERCONF SPACE_FILE "%s", slice_user->pw_name);
+
+    if (access(ctx_space_file, F_OK)==0)
+        space_flag |= CLONE_NEWNET;
+
+    free(ctx_space_dir);
+    return space_flag;
+}
-- 
2.43.0