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t_pr.c revision 1.6 
      1 /*	$NetBSD: t_pr.c,v 1.6 2010/07/03 12:23:04 pooka 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 	/* atf_tc_expect_signal(-1, "PR kern/23986"); */
     54 	rump_sys_mount(MOUNT_UNION, "/Tunion", 0,&unionargs,sizeof(unionargs));
     55 }
     56 
     57 ATF_TC(devnull1);
     58 ATF_TC_HEAD(devnull1, tc)
     59 {
     60 	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
     61 	    "'echo x > /un/null'");
     62 }
     63 
     64 ATF_TC_BODY(devnull1, tc)
     65 {
     66 	struct union_args unionargs;
     67 	int fd;
     68 
     69 	rump_init();
     70 
     71 	if (rump_sys_mkdir("/mp", 0777) == -1)
     72 		atf_tc_fail_errno("mkdir mp");
     73 
     74 	unionargs.target = __UNCONST("/dev");
     75 	unionargs.mntflags = UNMNT_BELOW;
     76 
     77 	if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
     78 	    &unionargs, sizeof(unionargs)) == -1)
     79 		atf_tc_fail_errno("union mount");
     80 
     81 	fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_TRUNC);
     82 
     83 	atf_tc_expect_fail("PR kern/43560");
     84 	if (fd == -1 && errno == EROFS)
     85 		atf_tc_fail("open returned EROFS");
     86 	else if (fd == -1)
     87 		atf_tc_fail_errno("open fail");
     88 
     89 	atf_tc_expect_pass();
     90 }
     91 
     92 ATF_TC(devnull2);
     93 ATF_TC_HEAD(devnull2, tc)
     94 {
     95 	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
     96 	    "'echo x >> /un/null'");
     97 }
     98 
     99 ATF_TC_BODY(devnull2, tc)
    100 {
    101 	struct union_args unionargs;
    102 	int fd;
    103 
    104 	rump_init();
    105 
    106 	if (rump_sys_mkdir("/mp", 0777) == -1)
    107 		atf_tc_fail_errno("mkdir mp");
    108 
    109 	unionargs.target = __UNCONST("/dev");
    110 	unionargs.mntflags = UNMNT_BELOW;
    111 
    112 	if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
    113 	    &unionargs, sizeof(unionargs)) == -1)
    114 		atf_tc_fail_errno("union mount");
    115 
    116 	fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_APPEND);
    117 	if (fd == -1)
    118 		atf_tc_fail_errno("open");
    119 
    120 	atf_tc_expect_signal(-1, "PR kern/43560");
    121 	rump_sys_write(fd, &fd, sizeof(fd));
    122 }
    123 
    124 ATF_TP_ADD_TCS(tp)
    125 {
    126 	ATF_TP_ADD_TC(tp, multilayer);
    127 	ATF_TP_ADD_TC(tp, devnull1);
    128 	ATF_TP_ADD_TC(tp, devnull2);
    129 
    130 	return atf_no_error();
    131 }
    132