vsys scripts to toggle between topology adn admin mode

diff --git a/enter_admin.c b/enter_admin.c
new file mode 100644 (file)
index 0000000..8b02cd2
--- /dev/null
+++ b/enter_admin.c
@@ -0,0 +1,81 @@
+#include <sys/syscall.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#ifndef CLONE_NEWNET
+#define CLONE_NEWNET    0x40000000      /* New network namespace (lo, device, names sockets, etc) */
+#endif
+
+#define        __NR_set_space          327
+#define        PATHLEN                 1024
+
+int set_space(int pid, int id, int toggle, unsigned long unshare_flags) { 
+               return syscall(__NR_set_space, pid, id, toggle, unshare_flags);
+}
+
+int get_slice_xid(char *slice_name) {
+       char slicepath[PATHLEN];
+       FILE *fp;
+       int xid;
+       snprintf(slicepath, sizeof(slicepath), "/etc/vservers/%s/context");
+
+       if ((fp = fopen(slicepath, "r")) == NULL) {
+               printf("Could not open %s\n", slicepath);       
+               return -1;
+       }
+
+       if (fscanf(fp, "%d", &xid)==0) {
+               printf("Could not read ctx file\n");
+               return -1;
+       }
+
+       fclose (fp);
+       return xid;
+}
+
+int verify_ownership(int pid, int arg_xid) {
+       char procpath[PATHLEN];
+       FILE *fp;
+       int xid;
+       snprintf(procpath, sizeof(procpath), "/proc/%d/vinfo");
+
+       if ((fp = fopen(procpath, "r")) == NULL) {
+               printf("Could not open %s\n", procpath);        
+               return -1;
+       }
+
+       if (fscanf(fp, "XID: %d", &xid)==0) {
+               printf("Could not read ctx file\n");
+               return -1;
+       }
+
+       fclose (fp);
+       return (arg_xid==xid);
+
+}
+
+int main(int argc, char *argv[]) {
+       int xid;
+       int pid;
+
+       if (argc < 1) {
+               printf("Slice name missing. Was I invoked by vsys?\n");
+               exit(1);
+       }
+
+       scanf("%d",&pid);
+
+       if ((xid = get_slice_xid(argv[1]))==-1) {
+               printf("Could not get xid for slice %s\n",argv[1]);
+               exit(1);
+       }
+
+       if (!verify_ownership(pid, xid)) {
+               printf("Does xid %d really own %d?\n",xid,pid);
+               exit(1);
+       }
+
+       set_space(pid, xid, 0, CLONE_NEWNET);
+}

diff --git a/enter_topo.c b/enter_topo.c
new file mode 100644 (file)
index 0000000..050b2fd
--- /dev/null
+++ b/enter_topo.c
@@ -0,0 +1,81 @@
+#include <sys/syscall.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#ifndef CLONE_NEWNET
+#define CLONE_NEWNET    0x40000000      /* New network namespace (lo, device, names sockets, etc) */
+#endif
+
+#define        __NR_set_space          327
+#define        PATHLEN                 1024
+
+int set_space(int pid, int id, int toggle, unsigned long unshare_flags) { 
+               return syscall(__NR_set_space, pid, id, toggle, unshare_flags);
+}
+
+int get_slice_xid(char *slice_name) {
+       char slicepath[PATHLEN];
+       FILE *fp;
+       int xid;
+       snprintf(slicepath, sizeof(slicepath), "/etc/vservers/%s/context");
+
+       if ((fp = fopen(slicepath, "r")) == NULL) {
+               printf("Could not open %s\n", slicepath);       
+               return -1;
+       }
+
+       if (fscanf(fp, "%d", &xid)==0) {
+               printf("Could not read ctx file\n");
+               return -1;
+       }
+
+       fclose (fp);
+       return xid;
+}
+
+int verify_ownership(int pid, int arg_xid) {
+       char procpath[PATHLEN];
+       FILE *fp;
+       int xid;
+       snprintf(procpath, sizeof(procpath), "/proc/%d/vinfo");
+
+       if ((fp = fopen(procpath, "r")) == NULL) {
+               printf("Could not open %s\n", procpath);        
+               return -1;
+       }
+
+       if (fscanf(fp, "XID: %d", &xid)==0) {
+               printf("Could not read ctx file\n");
+               return -1;
+       }
+
+       fclose (fp);
+       return (arg_xid==xid);
+
+}
+
+int main(int argc, char *argv[]) {
+       int xid;
+       int pid;
+
+       if (argc < 1) {
+               printf("Slice name missing. Was I invoked by vsys?\n");
+               exit(1);
+       }
+
+       scanf("%d",&pid);
+
+       if ((xid = get_slice_xid(argv[1]))==-1) {
+               printf("Could not get xid for slice %s\n",argv[1]);
+               exit(1);
+       }
+
+       if (!verify_ownership(pid, xid)) {
+               printf("Does xid %d really own %d?\n",xid,pid);
+               exit(1);
+       }
+
+       set_space(pid, xid, 1, CLONE_NEWNET);
+}