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      1 /*	$NetBSD: t_basic.c,v 1.6 2019/07/09 16:24:01 maya 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 
     25 ATF_TC(basic);
     26 ATF_TC_HEAD(basic, tc)
     27 {
     28 	atf_tc_set_md_var(tc, "descr", "basic umapfs mapping");
     29 }
     30 
     31 static void
     32 xtouch(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 
     42 static void
     43 xchown(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 
     50 static void
     51 testuidgid(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 
     69 ATF_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 
    141 ATF_TP_ADD_TCS(tp)
    142 {
    143 	ATF_TP_ADD_TC(tp, basic);
    144 	return atf_no_error();
    145 }
    146