tests/rump/modautoload/t_modautoload.c

   1 /*      $NetBSD: t_modautoload.c,v 1.2 2014/03/10 22:38:53 pooka Exp $  */
   2
   3 #include <sys/types.h>
   4 #include <sys/mount.h>
   5 #include <sys/module.h>
   6 #include <sys/dirent.h>
   7 #include <sys/sysctl.h>
   8
   9 #include <atf-c.h>
  10 #include <err.h>
  11 #include <errno.h>
  12 #include <fcntl.h>
  13 #include <stdio.h>
  14 #include <unistd.h>
  15 #include <string.h>
  16 #include <stdlib.h>
  17
  18 #include <rump/rump.h>
  19 #include <rump/rump_syscalls.h>
  20
  21 #include <miscfs/kernfs/kernfs.h>
  22
  23 #include "../../h_macros.h"
  24
  25 ATF_TC(modautoload);
  26 ATF_TC_HEAD(modautoload, tc)
  27 {
  28
  29         atf_tc_set_md_var(tc, "descr", "tests that kernel module "
  30             "autoload works in rump");
  31 }
  32
  33 static void
  34 mountkernfs(void)
  35 {
  36
  37         if (!rump_nativeabi_p())
  38                 atf_tc_skip("host kernel modules not supported");
  39
  40         rump_init();
  41
  42         if (rump_sys_mkdir("/kern", 0777) == -1)
  43                 atf_tc_fail_errno("mkdir /kern");
  44         if (rump_sys_mount(MOUNT_KERNFS, "/kern", 0, NULL, 0) == -1)
  45                 atf_tc_fail_errno("could not mount kernfs");
  46 }
  47
  48 /*
  49  * Why use kernfs here?  It talks to plenty of other parts with the
  50  * kernel (e.g. vfs_attach() in modcmd), but is still easy to verify
  51  * it's working correctly.
  52  */
  53
  54 #define MAGICNUM 1323
  55 ATF_TC_BODY(modautoload, tc)
  56 {
  57         extern int rumpns_hz;
  58         char buf[64];
  59         int fd;
  60
  61         mountkernfs();
  62         rumpns_hz = MAGICNUM;
  63         if ((fd = rump_sys_open("/kern/hz", O_RDONLY)) == -1)
  64                 atf_tc_fail_errno("open /kern/hz");
  65         if (rump_sys_read(fd, buf, sizeof(buf)) <= 0)
  66                 atf_tc_fail_errno("read");
  67         ATF_REQUIRE(atoi(buf) == MAGICNUM);
  68 }
  69
  70 ATF_TP_ADD_TCS(tp)
  71 {
  72         ATF_TP_ADD_TC(tp, modautoload);
  73
  74         return atf_no_error();
  75 }