t_basic.c revision 314817 
1/*	$NetBSD: t_basic.c,v 1.5 2017/01/13 21:30:40 christos Exp $	*/
2
3#include <sys/types.h>
4#include <sys/param.h>
5#include <sys/mount.h>
6
7#include <atf-c.h>
8#include <err.h>
9#include <errno.h>
10#include <fcntl.h>
11#include <stdio.h>
12#include <unistd.h>
13#include <string.h>
14#include <stdlib.h>
15
16#include <rump/rump.h>
17#include <rump/rump_syscalls.h>
18#include <rump/rumpvfs_if_pub.h>
19
20#include <fs/tmpfs/tmpfs_args.h>
21#include <miscfs/umapfs/umap.h>
22
23#include "h_macros.h"
24
25ATF_TC(basic);
26ATF_TC_HEAD(basic, tc)
27{
28	atf_tc_set_md_var(tc, "descr", "basic umapfs mapping");
29}
30
31static void
32xtouch(const char *path)
33{
34	int fd;
35
36	fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777);
37	if (fd == -1)
38		atf_tc_fail_errno("create %s", path);
39	rump_sys_close(fd);
40}
41
42static void
43xchown(const char *path, uid_t uid, gid_t gid)
44{
45
46	if (rump_sys_chown(path, uid, gid) == -1)
47		atf_tc_fail_errno("chown %s failed", path);
48}
49
50static void
51testuidgid(const char *path, uid_t uid, gid_t gid)
52{
53	struct stat sb;
54
55	if (rump_sys_stat(path, &sb) == -1)
56		atf_tc_fail_errno("stat %s", path);
57	if (uid != (uid_t)-1) {
58		if (sb.st_uid != uid)
59			atf_tc_fail("%s: expected uid %d, got %d",
60			    path, uid, sb.st_uid);
61	}
62	if (gid != (gid_t)-1) {
63		if (sb.st_gid != gid)
64			atf_tc_fail("%s: expected gid %d, got %d",
65			    path, gid, sb.st_gid);
66	}
67}
68
69ATF_TC_BODY(basic, tc)
70{
71	struct umap_args umargs;
72	struct tmpfs_args targs;
73	u_long umaps[2][2];
74	u_long gmaps[2][2];
75
76	rump_init();
77	if (rump_sys_mkdir("/td1", 0777) == -1)
78		atf_tc_fail_errno("mp1");
79	if (rump_sys_mkdir("/td2", 0777) == -1)
80		atf_tc_fail_errno("mp1");
81
82	/* use tmpfs because rumpfs doesn't support ownership */
83	memset(&targs, 0, sizeof(targs));
84	targs.ta_version = TMPFS_ARGS_VERSION;
85	targs.ta_root_mode = 0777;
86	if (rump_sys_mount(MOUNT_TMPFS, "/td1", 0, &targs, sizeof(targs)) == -1)
87		atf_tc_fail_errno("could not mount tmpfs td1");
88
89	memset(&umargs, 0, sizeof(umargs));
90
91	/*
92	 * Map td1 uid 555 to td2 uid 777 (yes, IMHO the umapfs
93	 * mapping format is counter-intuitive).
94	 */
95	umaps[0][0] = 777;
96	umaps[0][1] = 555;
97	umaps[1][0] = 0;
98	umaps[1][1] = 0;
99	gmaps[0][0] = 4321;
100	gmaps[0][1] = 1234;
101	gmaps[1][0] = 0;
102	gmaps[1][1] = 0;
103
104	umargs.umap_target = __UNCONST("/td1");
105	umargs.nentries = 2;
106	umargs.gnentries = 2;
107	umargs.mapdata = umaps;
108	umargs.gmapdata = gmaps;
109
110	if (rump_sys_mount(MOUNT_UMAP, "/td2", 0, &umargs,sizeof(umargs)) == -1)
111		atf_tc_fail_errno("could not mount umapfs");
112
113	xtouch("/td1/noch");
114	testuidgid("/td1/noch", 0, 0);
115	testuidgid("/td2/noch", 0, 0);
116
117	xtouch("/td1/nomap");
118	xchown("/td1/nomap", 1, 2);
119	testuidgid("/td1/nomap", 1, 2);
120	testuidgid("/td2/nomap", -1, -1);
121
122	xtouch("/td1/forwmap");
123	xchown("/td1/forwmap", 555, 1234);
124	testuidgid("/td1/forwmap", 555, 1234);
125	testuidgid("/td2/forwmap", 777, 4321);
126
127	/*
128	 * this *CANNOT* be correct???
129	 */
130	xtouch("/td1/revmap");
131	/*
132	 * should be 777 / 4321 (?), but makes first test fail since
133	 * it gets 777 / 4321, i.e. unmapped results.
134	 */
135	xchown("/td2/revmap", 555, 1234);
136	testuidgid("/td1/revmap", 555, 1234);
137	testuidgid("/td2/revmap", 777, 4321);
138
139}
140
141ATF_TP_ADD_TCS(tp)
142{
143	ATF_TP_ADD_TC(tp, basic);
144	return 0; /*XXX?*/
145}
146