1 /* $NetBSD: t_modautoload.c,v 1.6 2017/01/13 21:30:42 christos 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);
ATF_TC_HEAD(modautoload,tc)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
mountkernfs(void)34 mountkernfs(void)
35 {
36 bool old_autoload, new_autoload;
37 size_t old_len, new_len;
38 int error;
39
40 if (!rump_nativeabi_p())
41 atf_tc_skip("host kernel modules not supported");
42
43 rump_init();
44
45 if (rump_sys_mkdir("/kern", 0777) == -1)
46 atf_tc_fail_errno("mkdir /kern");
47
48 new_autoload = true;
49 old_len = sizeof(old_autoload);
50 new_len = sizeof(new_autoload);
51 error = sysctlbyname("kern.module.autoload",
52 &old_autoload, &old_len,
53 &new_autoload, new_len);
54 if (error != 0)
55 atf_tc_fail_errno("could not enable module autoload");
56
57 if (rump_sys_mount(MOUNT_KERNFS, "/kern", 0, NULL, 0) == -1)
58 atf_tc_fail_errno("could not mount kernfs");
59 }
60
61 /*
62 * Why use kernfs here? It talks to plenty of other parts with the
63 * kernel (e.g. vfs_attach() in modcmd), but is still easy to verify
64 * it's working correctly.
65 */
66
67 #define MAGICNUM 1323
ATF_TC_BODY(modautoload,tc)68 ATF_TC_BODY(modautoload, tc)
69 {
70 extern int rumpns_hz;
71 char buf[64];
72 int fd;
73
74 mountkernfs();
75 rumpns_hz = MAGICNUM;
76 if ((fd = rump_sys_open("/kern/hz", O_RDONLY)) == -1)
77 atf_tc_fail_errno("open /kern/hz");
78 if (rump_sys_read(fd, buf, sizeof(buf)) <= 0)
79 atf_tc_fail_errno("read");
80 ATF_REQUIRE(atoi(buf) == MAGICNUM);
81 }
82
ATF_TP_ADD_TCS(tp)83 ATF_TP_ADD_TCS(tp)
84 {
85 ATF_TP_ADD_TC(tp, modautoload);
86
87 return atf_no_error();
88 }
89