1 /* $NetBSD: t_pr.c,v 1.9 2017/01/13 21:30:40 christos Exp $ */ 2 3 #include <sys/types.h> 4 #include <sys/mount.h> 5 6 #include <atf-c.h> 7 #include <err.h> 8 #include <errno.h> 9 #include <fcntl.h> 10 #include <stdio.h> 11 #include <unistd.h> 12 #include <string.h> 13 #include <stdlib.h> 14 15 #include <rump/rump.h> 16 #include <rump/rump_syscalls.h> 17 18 #include <miscfs/union/union.h> 19 20 #include "h_macros.h" 21 22 ATF_TC(multilayer); 23 ATF_TC_HEAD(multilayer, tc) 24 { 25 atf_tc_set_md_var(tc, "descr", "mount_union -b twice"); 26 } 27 28 ATF_TC_BODY(multilayer, tc) 29 { 30 struct union_args unionargs; 31 32 rump_init(); 33 34 if (rump_sys_mkdir("/Tunion", 0777) == -1) 35 atf_tc_fail_errno("mkdir mp1"); 36 if (rump_sys_mkdir("/Tunion2", 0777) == -1) 37 atf_tc_fail_errno("mkdir mp2"); 38 if (rump_sys_mkdir("/Tunion2/A", 0777) == -1) 39 atf_tc_fail_errno("mkdir A"); 40 if (rump_sys_mkdir("/Tunion2/B", 0777) == -1) 41 atf_tc_fail_errno("mkdir B"); 42 43 unionargs.target = __UNCONST("/Tunion2/A"); 44 unionargs.mntflags = UNMNT_BELOW; 45 46 if (rump_sys_mount(MOUNT_UNION, "/Tunion", 0, 47 &unionargs, sizeof(unionargs)) == -1) 48 atf_tc_fail_errno("union mount"); 49 50 unionargs.target = __UNCONST("/Tunion2/B"); 51 unionargs.mntflags = UNMNT_BELOW; 52 53 rump_sys_mount(MOUNT_UNION, "/Tunion", 0,&unionargs,sizeof(unionargs)); 54 } 55 56 ATF_TC(devnull1); 57 ATF_TC_HEAD(devnull1, tc) 58 { 59 atf_tc_set_md_var(tc, "descr", "mount_union -b and " 60 "'echo x > /un/null'"); 61 } 62 63 ATF_TC_BODY(devnull1, tc) 64 { 65 struct union_args unionargs; 66 int fd, res; 67 68 rump_init(); 69 70 if (rump_sys_mkdir("/mp", 0777) == -1) 71 atf_tc_fail_errno("mkdir mp"); 72 73 unionargs.target = __UNCONST("/dev"); 74 unionargs.mntflags = UNMNT_BELOW; 75 76 if (rump_sys_mount(MOUNT_UNION, "/mp", 0, 77 &unionargs, sizeof(unionargs)) == -1) 78 atf_tc_fail_errno("union mount"); 79 80 fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_TRUNC); 81 82 if (fd == -1) 83 atf_tc_fail_errno("open"); 84 85 res = rump_sys_write(fd, &fd, sizeof(fd)); 86 if (res != sizeof(fd)) 87 atf_tc_fail("write"); 88 } 89 90 ATF_TC(devnull2); 91 ATF_TC_HEAD(devnull2, tc) 92 { 93 atf_tc_set_md_var(tc, "descr", "mount_union -b and " 94 "'echo x >> /un/null'"); 95 } 96 97 ATF_TC_BODY(devnull2, tc) 98 { 99 struct union_args unionargs; 100 int fd, res; 101 102 rump_init(); 103 104 if (rump_sys_mkdir("/mp", 0777) == -1) 105 atf_tc_fail_errno("mkdir mp"); 106 107 unionargs.target = __UNCONST("/dev"); 108 unionargs.mntflags = UNMNT_BELOW; 109 110 if (rump_sys_mount(MOUNT_UNION, "/mp", 0, 111 &unionargs, sizeof(unionargs)) == -1) 112 atf_tc_fail_errno("union mount"); 113 114 fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_APPEND); 115 if (fd == -1) 116 atf_tc_fail_errno("open"); 117 118 res = rump_sys_write(fd, &fd, sizeof(fd)); 119 if (res != sizeof(fd)) 120 atf_tc_fail("write"); 121 } 122 123 ATF_TP_ADD_TCS(tp) 124 { 125 ATF_TP_ADD_TC(tp, multilayer); 126 ATF_TP_ADD_TC(tp, devnull1); 127 ATF_TP_ADD_TC(tp, devnull2); 128 129 return atf_no_error(); 130 } 131