1 /* Version 3 of vsh. Basically a wrapper around 'lxcsu -n -m <slicename>' - Sapan */
12 #define VSH_PATH "/usr/sbin/vsh"
17 #define LXCSU_PATH "/usr/sbin/lxcsu"
19 char* get_current_username (unsigned int uid)
21 struct passwd *passwd_entry;
22 if ((passwd_entry = getpwuid(uid)) == NULL) {
23 fprintf(stderr, "Could not look up user record for %d\n", uid);
27 return (strdup(passwd_entry->pw_name));
30 char **extend_argv(int argc, char **argv, int num_extra_args) {
34 argc2 = argc + num_extra_args;
35 argv2 = (char **) malloc((argc2 + 1) * sizeof(char *));
38 return (char **) NULL;
40 for (i=0; i<argc; i++) {
41 argv2[i+num_extra_args]=strdup(argv[i]);
48 #define NUM_LXCSU_EXEC_ARGS 1
50 int main(int argc, char **argv, char **envp)
55 char slice_id_str[256];
56 unsigned int slice_xid;
59 slice_name = get_current_username(slice_xid);
61 fprintf(stderr,"Could not look up slice name\n");
65 argv2 = extend_argv(argc, argv, NUM_LXCSU_EXEC_ARGS);
66 if (!argv2) goto out_exception;
70 snprintf(slice_id_str, 255, "%u", slice_xid);
71 argv2[0] = strdup(LXCSU_PATH);
72 argv2[1] = strdup(slice_name);
74 if (setuid(geteuid())) goto out_exception;
76 execve(LXCSU_PATH, argv2, envp);
79 printf("%s\n", strerror(errno));