diff options
Diffstat (limited to 'contrib/netbsd-tests/kernel/t_extent.c')
| -rw-r--r-- | contrib/netbsd-tests/kernel/t_extent.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/kernel/t_extent.c b/contrib/netbsd-tests/kernel/t_extent.c new file mode 100644 index 0000000..faefafa --- /dev/null +++ b/contrib/netbsd-tests/kernel/t_extent.c @@ -0,0 +1,385 @@ +/* $NetBSD: t_extent.c,v 1.4 2012/01/27 18:53:10 para Exp $ */ + +/*- + * Copyright (c) 2008 The NetBSD Foundation, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__COPYRIGHT("@(#) Copyright (c) 2008\ + The NetBSD Foundation, inc. All rights reserved."); +__RCSID("$NetBSD: t_extent.c,v 1.4 2012/01/27 18:53:10 para Exp $"); + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/extent.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <atf-c.h> + +#include "../h_macros.h" + +static int ret; +static struct extent *ex; + +#define h_create(name, start, end, flags) \ + ATF_REQUIRE((ex = extent_create(name, \ + start, end, 0, 0, flags)) != NULL); + +#define h_alloc_region(start, size) \ + ATF_REQUIRE_EQ_MSG(ret = extent_alloc_region(ex, \ + start, size, 0), 0, "%s", strerror(ret)); + +#define h_free(start, size) \ + ATF_REQUIRE_EQ_MSG(ret = extent_free(ex, \ + start, size, 0), 0, "%s", strerror(ret)); + +static void +h_alloc_subregion(u_long substart, u_long subend, u_long size, + u_long alignment, u_long boundary, int expret, u_long expres) +{ + u_long result; + +#define FAIL(fmt, ...) \ + atf_tc_fail("extent_alloc_subregion1(ex, %#lx, %#lx, %#lx, %#lx, 0, " \ + "%#lx, 0, &result): " fmt, substart, subend, size, alignment, \ + boundary, ##__VA_ARGS__) + + ret = extent_alloc_subregion1(ex, substart, subend, size, + alignment, 0, boundary, 0, &result); + + if (ret != expret) + FAIL("%s", strerror(errno)); + + if (expret == 0 && result != expres) + FAIL("result should be: %#lx, got: %#lx", expres, result); +#undef FAIL +} + +static void +h_require(const char *name, u_long start, + u_long end, int flags, const char *exp) +{ + char buf[4096]; + struct extent_region *rp; + int n = 0; + + ATF_REQUIRE_STREQ_MSG(ex->ex_name, name, + "expected: \"%s\", got: \"%s\"", name, ex->ex_name); + ATF_REQUIRE_EQ_MSG(ex->ex_start, start, + "expected: %#lx, got: %#lx", start, ex->ex_start); + ATF_REQUIRE_EQ_MSG(ex->ex_end, end, + "expected: %#lx, got: %#lx", end, ex->ex_end); + ATF_REQUIRE_EQ_MSG(ex->ex_flags, flags, + "expected: %#x, got: %#x", flags, ex->ex_flags); + + (void)memset(buf, 0, sizeof(buf)); + LIST_FOREACH(rp, &ex->ex_regions, er_link) + n += snprintf(buf + n, sizeof(buf) - n, + "0x%lx - 0x%lx\n", rp->er_start, rp->er_end); + + if (strcmp(buf, exp) == 0) + return; + + printf("Incorrect extent map\n"); + printf("Expected:\n%s\n", exp); + printf("Got:\n%s\n", buf); + atf_tc_fail("incorrect extent map"); +} + +ATF_TC(coalesce); +ATF_TC_HEAD(coalesce, tc) +{ + atf_tc_set_md_var(tc, "descr", "Checks coalescing of regions"); +} +ATF_TC_BODY(coalesce, tc) +{ + h_create("test1", 0, 0x4f, 0); + + h_alloc_region(0x00, 0x10); + h_alloc_region(0x20, 0x10); + h_alloc_region(0x40, 0x10); + h_alloc_region(0x10, 0x10); + h_alloc_subregion(0, 0x4f, 0x10, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x30); + + h_require("test1", 0x00, 0x4f, 0x00, + "0x0 - 0x4f\n"); + + extent_destroy(ex); +} + +ATF_TC(subregion1); +ATF_TC_HEAD(subregion1, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks that subregions work (PR kern/7539)"); +} +ATF_TC_BODY(subregion1, tc) +{ + h_create("test2", 0, 0x2f, EX_NOCOALESCE); + + h_alloc_region(0x00, 0x10); + h_alloc_subregion(0x20, 0x30, 0x10, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x20); + + h_require("test2", 0x00, 0x2f, 0x2, + "0x0 - 0xf\n" + "0x20 - 0x2f\n"); + + extent_destroy(ex); +} + +ATF_TC(subregion2); +ATF_TC_HEAD(subregion2, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks that subregion allocations don't overlap with existing " + "ones (fixed in 1.25)"); +} +ATF_TC_BODY(subregion2, tc) +{ + h_create("test3", 0, 0x3f, EX_NOCOALESCE); + + h_alloc_region(0x00, 0x20); + h_alloc_region(0x30, 0x10); + h_alloc_subregion(0x10, 0x3f, 0x10, + EX_NOALIGN, EX_NOBOUNDARY, 0, 0x20); + + h_require("test3", 0x00, 0x3f, 0x2, + "0x0 - 0x1f\n" + "0x20 - 0x2f\n" + "0x30 - 0x3f\n"); + + extent_destroy(ex); +} + +ATF_TC(bound1); +ATF_TC_HEAD(bound1, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks for overflow in boundary check, before an allocated region " + "(fixed in 1.32)"); +} +ATF_TC_BODY(bound1, tc) +{ + h_create("test4", 0xf0000000, 0xffffffff, 0); + + h_alloc_region(0xf1000000, 0x1); + h_alloc_subregion(0xf0000000, 0xffffffff, 0x1, + EX_NOALIGN, 0x20000000, 0, 0xf0000000); + + h_require("test4", 0xf0000000, 0xffffffff, 0x0, + "0xf0000000 - 0xf0000000\n" + "0xf1000000 - 0xf1000000\n"); + + extent_destroy(ex); +} + +ATF_TC(bound2); +ATF_TC_HEAD(bound2, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks for overflow in boundary checks, before the subregion end " + "(fixed in 1.32)"); +} +ATF_TC_BODY(bound2, tc) +{ + h_create("test5", 0xf0000000, 0xffffffff, 0); + + h_alloc_subregion(0xf0000000, 0xffffffff, 0x1, + EX_NOALIGN, 0x20000000, 0, 0xf0000000); + + h_require("test5", 0xf0000000, 0xffffffff, 0x0, + "0xf0000000 - 0xf0000000\n"); + + extent_destroy(ex); +} + +ATF_TC(bound3); +ATF_TC_HEAD(bound3, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks allocation beyond last boundary line: last two " + "allocations should succeed without boundary \"fixups\""); +} +ATF_TC_BODY(bound3, tc) +{ + h_create("test6", 0, 11, 0); + + h_alloc_subregion(0, 11, 8, EX_NOALIGN, 8, 0, 0); + h_alloc_subregion(0, 11, 2, EX_NOALIGN, 8, 0, 0x8); + h_alloc_subregion(0, 11, 2, EX_NOALIGN, 8, 0, 0xa); + + h_require("test6", 0x0, 0xb, 0x0, "0x0 - 0xb\n"); + + extent_destroy(ex); +} + +ATF_TC(bound4); +ATF_TC_HEAD(bound4, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks allocation beyond last boundary line: last allocation " + "should be bumped to the next boundary and exactly fit the " + "remaining space"); +} +ATF_TC_BODY(bound4, tc) +{ + h_create("test7", 0, 11, 0); + + h_alloc_subregion(0, 11, 7, EX_NOALIGN, 8, 0, 0); + h_alloc_subregion(0, 11, 4, EX_NOALIGN, 8, 0, 8); + + h_require("test7", 0x0, 0xb, 0x0, + "0x0 - 0x6\n" + "0x8 - 0xb\n"); + + extent_destroy(ex); +} + +ATF_TC(subregion3); +ATF_TC_HEAD(subregion3, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks that we don't allocate a region pasts the end of " + "subregion (i.e., the second alloc_subregion should fail). " + "subr_extent.c prior to rev. 1.43 allocated region starting " + "from 0x10"); +} +ATF_TC_BODY(subregion3, tc) +{ + h_create("test8", 0, 0x4f, EX_NOCOALESCE); + + h_alloc_region(0x30, 0x10); + h_alloc_subregion(0, 0xf, 0x10, EX_NOALIGN, EX_NOBOUNDARY, 0, 0); + h_alloc_subregion(0, 0xf, 0x10, EX_NOALIGN, EX_NOBOUNDARY, EAGAIN, 0); + + h_require("test8", 0x0, 0x4f, 0x2, + "0x0 - 0xf\n" + "0x30 - 0x3f\n"); + + extent_destroy(ex); +} + +ATF_TC(bound5); +ATF_TC_HEAD(bound5, tc) +{ + atf_tc_set_md_var(tc, "descr", + "When allocating a region with a boundary constraint, checks " + "proper detection of overflaps once the candidate region has " + "been aligned. subr_extent.c prior 1.45 could corrupt the extent " + "map in this situation"); +} +ATF_TC_BODY(bound5, tc) +{ + h_create("test9", 0, 0x4f, 0); + + h_alloc_subregion(0, 0x10, 4, EX_NOALIGN, 0, 0, 0); + h_alloc_subregion(0xd, 0x20, 2, EX_NOALIGN, 0, 0, 0xd); + h_alloc_subregion(0, 0x4f, 8, EX_NOALIGN, 8, 0, 0x10); + + h_require("test9", 0x0, 0x4f, 0x0, + "0x0 - 0x3\n" + "0xd - 0xe\n" + "0x10 - 0x17\n"); + + extent_destroy(ex); +} + +ATF_TC(free); +ATF_TC_HEAD(free, tc) +{ + atf_tc_set_md_var(tc, "descr", "Checks extent_free()"); +} +ATF_TC_BODY(free, tc) +{ + h_create("test10", 0xc0002000, 0xffffe000, EX_BOUNDZERO); + + h_alloc_subregion(0xc0002000, 0xffffe000, 0x2000, + 0x10000, 0x10000, 0, 0xc0010000); + h_alloc_subregion(0xc0002000, 0xffffe000, 0x2000, + 0x10000, 0x10000, 0, 0xc0020000); + + h_require("test10", 0xc0002000, 0xffffe000, 0x0, + "0xc0010000 - 0xc0011fff\n" + "0xc0020000 - 0xc0021fff\n"); + + h_free(0xc0020000, 0x2000); + h_require("test10", 0xc0002000, 0xffffe000, 0x0, + "0xc0010000 - 0xc0011fff\n"); + + h_alloc_subregion(0xc0002000, 0xffffe000, 0x10000, + 0x10000, 0x10000, 0, 0xc0022000); + + h_require("test10", 0xc0002000, 0xffffe000, 0x0, + "0xc0010000 - 0xc0011fff\n" + "0xc0022000 - 0xc0031fff\n"); + + extent_destroy(ex); +} + +ATF_TC(subregion4); +ATF_TC_HEAD(subregion4, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks for off-by-one bug which would cause a region at the end " + "of the extent to be allocated multiple times (fixed in 1.51)"); +} +ATF_TC_BODY(subregion4, tc) +{ + h_create("test11", 0x10, 0x20, EX_NOCOALESCE); + + h_alloc_subregion(0x10, 0x13, 0x4, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x10); + h_alloc_subregion(0x1e, 0x1f, 0x2, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x1e); + h_alloc_subregion(0x20, 0x20, 0x1, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x20); + h_alloc_subregion(0x20, 0x20, 0x1, EX_NOALIGN, EX_NOBOUNDARY, EAGAIN, 0); + h_alloc_subregion(0x10, 0x20, 0x1, EX_NOALIGN, EX_NOBOUNDARY, 0, 0x14); + + h_require("test11", 0x10, 0x20, 0x2, + "0x10 - 0x13\n" + "0x14 - 0x14\n" + "0x1e - 0x1f\n" + "0x20 - 0x20\n"); + + extent_destroy(ex); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, coalesce); + ATF_TP_ADD_TC(tp, subregion1); + ATF_TP_ADD_TC(tp, subregion2); + ATF_TP_ADD_TC(tp, bound1); + ATF_TP_ADD_TC(tp, bound2); + ATF_TP_ADD_TC(tp, bound3); + ATF_TP_ADD_TC(tp, bound4); + ATF_TP_ADD_TC(tp, subregion3); + ATF_TP_ADD_TC(tp, bound5); + ATF_TP_ADD_TC(tp, free); + ATF_TP_ADD_TC(tp, subregion4); + + return atf_no_error(); +} |
