tests/fs/umapfs/t_basic.c

   1 /*      $NetBSD: t_basic.c,v 1.4 2010/07/19 15:35:39 pooka 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 0; /*XXX?*/
 145 }