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tests for i/o-after-unlink

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This commit is contained in:
pooka 2013-08-04 11:02:02 +00:00
parent 2077b57a6f
commit 40df3663d1
1 changed files with 59 additions and 1 deletions
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60
tests/fs/vfs/t_io.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_io.c,v 1.11 2013/06/12 12:08:08 pooka Exp $ */ /* $NetBSD: t_io.c,v 1.12 2013/08/04 11:02:02 pooka Exp $ */
/*- /*-
* Copyright (c) 2010 The NetBSD Foundation, Inc. * Copyright (c) 2010 The NetBSD Foundation, Inc.
@ -168,6 +168,60 @@ shrinkfile(const atf_tc_t *tc, const char *mp)
FSTEST_EXIT(); FSTEST_EXIT();
} }
#define TBSIZE 9000
static void
read_after_unlink(const atf_tc_t *tc, const char *mp)
{
char buf[TBSIZE], buf2[TBSIZE];
int fd;
FSTEST_ENTER();
/* create file and put some content into it */
RL(fd = rump_sys_open("file", O_RDWR|O_CREAT, 0666));
memset(buf, 'D', TBSIZE);
ATF_REQUIRE_EQ(rump_sys_write(fd, buf, TBSIZE), TBSIZE);
rump_sys_close(fd);
/* flush buffers from UBC to file system */
ATF_REQUIRE_ERRNO(EBUSY, rump_sys_unmount(mp, 0) == -1);
RL(fd = rump_sys_open("file", O_RDWR));
RL(rump_sys_unlink("file"));
ATF_REQUIRE_EQ(rump_sys_read(fd, buf2, TBSIZE), TBSIZE);
ATF_REQUIRE_EQ(memcmp(buf, buf2, TBSIZE), 0);
rump_sys_close(fd);
FSTEST_EXIT();
}
static void
wrrd_after_unlink(const atf_tc_t *tc, const char *mp)
{
int value = 0x11;
int v2;
int fd;
FSTEST_ENTER();
RL(fd = rump_sys_open("file", O_RDWR|O_CREAT, 0666));
RL(rump_sys_unlink("file"));
RL(rump_sys_pwrite(fd, &value, sizeof(value), 654321));
/*
* We can't easily invalidate the buffer since we hold a
* reference, but try to get them to flush anyway.
*/
RL(rump_sys_fsync(fd));
RL(rump_sys_pread(fd, &v2, sizeof(v2), 654321));
rump_sys_close(fd);
ATF_REQUIRE_EQ(value, v2);
FSTEST_EXIT();
}
ATF_TC_FSAPPLY(holywrite, "create a sparse file and fill hole"); ATF_TC_FSAPPLY(holywrite, "create a sparse file and fill hole");
ATF_TC_FSAPPLY(extendfile, "check that extending a file works"); ATF_TC_FSAPPLY(extendfile, "check that extending a file works");
ATF_TC_FSAPPLY(extendfile_append, "check that extending a file works " ATF_TC_FSAPPLY(extendfile_append, "check that extending a file works "
@ -176,6 +230,8 @@ ATF_TC_FSAPPLY(overwrite512, "write a 512 byte file twice");
ATF_TC_FSAPPLY(overwrite64k, "write a 64k byte file twice"); ATF_TC_FSAPPLY(overwrite64k, "write a 64k byte file twice");
ATF_TC_FSAPPLY(overwrite_trunc, "write 64k + truncate + rewrite"); ATF_TC_FSAPPLY(overwrite_trunc, "write 64k + truncate + rewrite");
ATF_TC_FSAPPLY(shrinkfile, "shrink file"); ATF_TC_FSAPPLY(shrinkfile, "shrink file");
ATF_TC_FSAPPLY(read_after_unlink, "contents can be read off disk after unlink");
ATF_TC_FSAPPLY(wrrd_after_unlink, "file can be written and read after unlink");
ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TCS(tp)
{ {
@ -187,6 +243,8 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_FSAPPLY(overwrite64k); ATF_TP_FSAPPLY(overwrite64k);
ATF_TP_FSAPPLY(overwrite_trunc); ATF_TP_FSAPPLY(overwrite_trunc);
ATF_TP_FSAPPLY(shrinkfile); ATF_TP_FSAPPLY(shrinkfile);
ATF_TP_FSAPPLY(read_after_unlink);
ATF_TP_FSAPPLY(wrrd_after_unlink);
return atf_no_error(); return atf_no_error();
} }