t_pr.c revision 314817 
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
22ATF_TC(multilayer);
23ATF_TC_HEAD(multilayer, tc)
24{
25	atf_tc_set_md_var(tc, "descr", "mount_union -b twice");
26}
27
28ATF_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
56ATF_TC(devnull1);
57ATF_TC_HEAD(devnull1, tc)
58{
59	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
60	    "'echo x > /un/null'");
61}
62
63ATF_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
90ATF_TC(devnull2);
91ATF_TC_HEAD(devnull2, tc)
92{
93	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
94	    "'echo x >> /un/null'");
95}
96
97ATF_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
123ATF_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