/* $NetBSD: t_extent.c,v 1.5 2017/01/13 21:30:41 christos 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 __COPYRIGHT("@(#) Copyright (c) 2008\ The NetBSD Foundation, inc. All rights reserved."); __RCSID("$NetBSD: t_extent.c,v 1.5 2017/01/13 21:30:41 christos Exp $"); #include #include #include #include #include #include #include #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(); }