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); 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 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 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 83 ATF_TP_ADD_TCS(tp) 84 { 85 ATF_TP_ADD_TC(tp, modautoload); 86 87 return atf_no_error(); 88 } 89