| /* |
| * Check decoding of kexec_load syscall. |
| * |
| * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com> |
| * Copyright (c) 2016-2018 The strace developers. |
| * 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "tests.h" |
| |
| #include <asm/unistd.h> |
| |
| #ifdef __NR_kexec_load |
| |
| # include <stdio.h> |
| # include <unistd.h> |
| |
| struct strval { |
| kernel_ulong_t val; |
| const char *str64; |
| const char *str32; |
| const char *str; |
| }; |
| |
| struct segm { |
| void *buf; |
| size_t bufsz; |
| void *mem; |
| size_t memsz; |
| }; |
| |
| int |
| main(void) |
| { |
| enum { |
| NUM_SEGMS = 17, |
| NUM_SEGMS_UNCUT = 5, |
| NUM_SEGMS_UNCUT_MAX = 9, |
| NUM_SEGMS_CUT = 12, |
| SEGMS_ARRAY_SIZE = sizeof(struct segm) * NUM_SEGMS, |
| }; |
| |
| static const kernel_ulong_t bogus_zero = |
| sizeof(long) < sizeof(kernel_long_t) ? F8ILL_KULONG_MASK : 0; |
| static const kernel_ulong_t bogus_entry = |
| (kernel_ulong_t) 0xdeadca57badda7a1ULL; |
| static const kernel_ulong_t bogus_nsegs = |
| (kernel_ulong_t) 0xdec0ded1defaced2ULL; |
| |
| static const struct strval flags[] = { |
| { (kernel_ulong_t) 0xbadc0dedda7a1054ULL, |
| "0xda7a0000 /* KEXEC_ARCH_??? */|0xbadc0ded0000", |
| "0xda7a0000 /* KEXEC_ARCH_??? */|0x", |
| "1054 /* KEXEC_??? */" }, |
| { 0, "", "", "KEXEC_ARCH_DEFAULT" }, |
| { 0x2a0003, "", "", |
| "KEXEC_ARCH_SH|KEXEC_ON_CRASH|KEXEC_PRESERVE_CONTEXT" }, |
| { 0xdead0000, "", "", "0xdead0000 /* KEXEC_ARCH_??? */" }, |
| }; |
| |
| const char *errstr; |
| long rc; |
| struct segm *segms = tail_alloc(SEGMS_ARRAY_SIZE); |
| unsigned int i; |
| |
| fill_memory(segms, SEGMS_ARRAY_SIZE); |
| segms[0].buf = segms[0].mem = NULL; |
| |
| rc = syscall(__NR_kexec_load, bogus_zero, bogus_zero, bogus_zero, |
| flags[0].val); |
| printf("kexec_load(NULL, 0, NULL, %s%s) = %s\n", |
| sizeof(long) == 8 ? flags[0].str64 : flags[0].str32, |
| flags[0].str, sprintrc(rc)); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, bogus_nsegs, |
| segms + SEGMS_ARRAY_SIZE, flags[1].val); |
| printf("kexec_load(%#lx, %lu, %p, %s) = %s\n", |
| (unsigned long) bogus_entry, (unsigned long) bogus_nsegs, |
| segms + SEGMS_ARRAY_SIZE, flags[1].str, sprintrc(rc)); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, NUM_SEGMS, |
| segms, flags[2].val); |
| printf("kexec_load(%#lx, %lu, %p, %s) = %s\n", |
| (unsigned long) bogus_entry, (unsigned long) NUM_SEGMS, |
| segms, flags[2].str, sprintrc(rc)); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, NUM_SEGMS_CUT, |
| segms, flags[3].val); |
| errstr = sprintrc(rc); |
| printf("kexec_load(%#lx, %lu, [{buf=NULL, bufsz=%zu, mem=NULL, " |
| "memsz=%zu}, ", |
| (unsigned long) bogus_entry, (unsigned long) NUM_SEGMS_CUT, |
| segms[0].bufsz, segms[0].memsz); |
| for (i = 1; i < NUM_SEGMS_UNCUT_MAX; i++) |
| printf("{buf=%p, bufsz=%zu, mem=%p, memsz=%zu}, ", |
| segms[i].buf, segms[i].bufsz, |
| segms[i].mem, segms[i].memsz); |
| printf("...], %s) = %s\n", flags[3].str, errstr); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, NUM_SEGMS_CUT, |
| segms + (NUM_SEGMS - NUM_SEGMS_UNCUT_MAX), |
| flags[0].val); |
| errstr = sprintrc(rc); |
| printf("kexec_load(%#lx, %lu, [", |
| (unsigned long) bogus_entry, (unsigned long) NUM_SEGMS_CUT); |
| for (i = NUM_SEGMS - NUM_SEGMS_UNCUT_MAX; i < NUM_SEGMS; i++) |
| printf("{buf=%p, bufsz=%zu, mem=%p, memsz=%zu}, ", |
| segms[i].buf, segms[i].bufsz, |
| segms[i].mem, segms[i].memsz); |
| printf("... /* %p */], %s%s) = %s\n", |
| segms + NUM_SEGMS, |
| sizeof(long) == 8 ? flags[0].str64 : flags[0].str32, |
| flags[0].str, errstr); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, NUM_SEGMS_UNCUT, |
| segms + (NUM_SEGMS - NUM_SEGMS_UNCUT), |
| flags[1].val); |
| errstr = sprintrc(rc); |
| printf("kexec_load(%#lx, %lu, [", |
| (unsigned long) bogus_entry, (unsigned long) NUM_SEGMS_UNCUT); |
| for (i = NUM_SEGMS - NUM_SEGMS_UNCUT; i < NUM_SEGMS; i++) |
| printf("{buf=%p, bufsz=%zu, mem=%p, memsz=%zu}%s", |
| segms[i].buf, segms[i].bufsz, |
| segms[i].mem, segms[i].memsz, |
| (i == NUM_SEGMS - 1) ? "" : ", "); |
| printf("], %s) = %s\n", flags[1].str, errstr); |
| |
| rc = syscall(__NR_kexec_load, bogus_entry, NUM_SEGMS_CUT, |
| segms + 1, flags[2].val); |
| errstr = sprintrc(rc); |
| printf("kexec_load(%#lx, %lu, [", |
| (unsigned long) bogus_entry, (unsigned long) NUM_SEGMS_CUT); |
| for (i = 1; i < NUM_SEGMS_UNCUT_MAX + 1; i++) |
| printf("{buf=%p, bufsz=%zu, mem=%p, memsz=%zu}, ", |
| segms[i].buf, segms[i].bufsz, |
| segms[i].mem, segms[i].memsz); |
| printf("...], %s) = %s\n", flags[2].str, errstr); |
| |
| puts("+++ exited with 0 +++"); |
| |
| return 0; |
| } |
| |
| #else |
| |
| SKIP_MAIN_UNDEFINED("__NR_kexec_load"); |
| |
| #endif |