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/*
* Check decoding of UBI ioctl commands.
*
* Copyright (c) 2016-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <mtd/ubi-user.h>
static const unsigned long long llmagic = 0xdeadbeefbadc0dedULL;
static const unsigned long lmagic = (unsigned long) 0xdeadbeefbadc0dedULL;
static const unsigned int imagic = 0xdeadbeef;
static const char *errstr;
static int
do_ioctl(kernel_ulong_t cmd, kernel_ulong_t arg)
{
int rc = ioctl(-1, cmd, arg);
errstr = sprintrc(rc);
#ifdef INJECT_RETVAL
if (rc != INJECT_RETVAL)
error_msg_and_fail("Return value [%d] does not match"
" expectations [%d]", rc, INJECT_RETVAL);
static char inj_errstr[4096];
snprintf(inj_errstr, sizeof(inj_errstr), "%s (INJECTED)", errstr);
errstr = inj_errstr;
#endif
return rc;
}
static int
do_ioctl_ptr(kernel_ulong_t cmd, const void *arg)
{
return do_ioctl(cmd, (uintptr_t) arg);
}
#ifdef INJECT_RETVAL
static void
skip_ioctls(int argc, const char *argv[])
{
if (argc < 2)
error_msg_and_fail("Usage: %s NUM_SKIP", argv[0]);
unsigned long num_skip = strtoul(argv[1], NULL, 0);
for (size_t i = 0; i < num_skip; ++i) {
int rc = ioctl(-1, UBI_IOCATT, 0);
printf("ioctl(-1, UBI_IOCATT, NULL) = %s%s\n", sprintrc(rc),
rc == INJECT_RETVAL ? " (INJECTED)" : "");
if (rc == INJECT_RETVAL)
return;
}
error_msg_and_fail("Issued %lu ioctl syscalls but failed"
" to detect an injected return code %d",
num_skip, INJECT_RETVAL);
}
#endif /* INJECT_RETVAL */
int
main(int argc, const char *argv[])
{
#ifdef INJECT_RETVAL
skip_ioctls(argc, argv);
#endif
static const struct {
unsigned int cmd;
const char *str;
}
noarg_cmds[] = {
{ ARG_STR(UBI_IOCVOLCRBLK) },
{ ARG_STR(UBI_IOCVOLRMBLK) },
},
pint_cmds[] = {
{ ARG_STR(UBI_IOCDET) },
{ ARG_STR(UBI_IOCEBER) },
{ ARG_STR(UBI_IOCEBISMAP) },
{ ARG_STR(UBI_IOCEBUNMAP) },
{ ARG_STR(UBI_IOCRMVOL) },
{ ARG_STR(UBI_IOCRPEB) },
{ ARG_STR(UBI_IOCSPEB) },
}, pint64_cmds[] = {
{ ARG_STR(UBI_IOCVOLUP) },
}, ptr_cmds[] = {
{ ARG_STR(UBI_IOCATT) },
{ ARG_STR(UBI_IOCEBCH) },
{ ARG_STR(UBI_IOCEBMAP) },
{ ARG_STR(UBI_IOCMKVOL) },
{ ARG_STR(UBI_IOCRNVOL) },
{ ARG_STR(UBI_IOCRSVOL) },
{ ARG_STR(UBI_IOCSETVOLPROP) },
}, attach_cmds[] = {
{ ARG_STR(UBI_IOCATT) },
}, leb_cmds[] = {
{ ARG_STR(UBI_IOCEBCH) },
}, map_cmds[] = {
{ ARG_STR(UBI_IOCEBMAP) },
}, mkvol_cmds[] = {
{ ARG_STR(UBI_IOCMKVOL) },
}, rnvol_cmds[] = {
{ ARG_STR(UBI_IOCRNVOL) },
}, rsvol_cmds[] = {
{ ARG_STR(UBI_IOCRSVOL) },
}, prop_cmds[] = {
{ ARG_STR(UBI_IOCSETVOLPROP) },
};
for (size_t i = 0; i < ARRAY_SIZE(noarg_cmds); ++i) {
do_ioctl(noarg_cmds[i].cmd, lmagic);
printf("ioctl(-1, %s) = %s\n",
noarg_cmds[i].str, errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(int, pint);
*pint = imagic;
for (size_t i = 0; i < ARRAY_SIZE(pint_cmds); ++i) {
do_ioctl_ptr(pint_cmds[i].cmd, pint);
printf("ioctl(-1, %s, [%d]) = %s\n",
pint_cmds[i].str, *pint, errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(int64_t, pint64);
*pint64 = (int64_t) llmagic;
for (size_t i = 0; i < ARRAY_SIZE(pint64_cmds); ++i) {
do_ioctl_ptr(pint64_cmds[i].cmd, pint64);
printf("ioctl(-1, %s, [%jd]) = %s\n",
pint64_cmds[i].str, (intmax_t) *pint64, errstr);
}
void *const efault = tail_alloc(1);
for (size_t i = 0; i < ARRAY_SIZE(ptr_cmds); ++i) {
do_ioctl(ptr_cmds[i].cmd, 0);
printf("ioctl(-1, %s, NULL) = %s\n",
ptr_cmds[i].str, errstr);
do_ioctl_ptr(ptr_cmds[i].cmd, efault);
printf("ioctl(-1, %s, %p) = %s\n",
ptr_cmds[i].str, efault, errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_attach_req, attach);
fill_memory(attach, sizeof(*attach));
for (size_t i = 0; i < ARRAY_SIZE(attach_cmds); ++i) {
int rc = do_ioctl_ptr(attach_cmds[i].cmd, attach);
printf("ioctl(-1, %s, {ubi_num=%d, mtd_num=%d"
", vid_hdr_offset=%d, max_beb_per1024=%hd"
", disable_fm=%hhd, need_resv_pool=%hhd}",
attach_cmds[i].str, attach->ubi_num,
attach->mtd_num, attach->vid_hdr_offset,
attach->max_beb_per1024, attach->disable_fm,
attach->need_resv_pool);
if (rc >= 0)
printf(" => [%d]", attach->ubi_num);
printf(") = %s\n", errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_leb_change_req, leb);
fill_memory(leb, sizeof(*leb));
leb->dtype = 3;
for (size_t i = 0; i < ARRAY_SIZE(leb_cmds); ++i) {
do_ioctl_ptr(leb_cmds[i].cmd, leb);
printf("ioctl(-1, %s, {lnum=%d, bytes=%d, dtype=%s}) = %s\n",
leb_cmds[i].str, leb->lnum, leb->bytes, "UBI_UNKNOWN",
errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_map_req, map);
fill_memory(map, sizeof(*map));
map->dtype = 3;
for (size_t i = 0; i < ARRAY_SIZE(map_cmds); ++i) {
do_ioctl_ptr(map_cmds[i].cmd, map);
printf("ioctl(-1, %s, {lnum=%d, dtype=%s}) = %s\n",
map_cmds[i].str, map->lnum, "UBI_UNKNOWN", errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_mkvol_req, mkvol);
fill_memory(mkvol, sizeof(*mkvol));
mkvol->vol_type = 4;
mkvol->flags = 1;
fill_memory_ex(mkvol->name, sizeof(mkvol->name), '0', 10);
for (size_t i = 0; i < ARRAY_SIZE(mkvol_cmds); ++i) {
static const int lens[] = {
-1, 0, 1, UBI_MAX_VOLUME_NAME,
UBI_MAX_VOLUME_NAME + 1
};
for (size_t j = 0; j < ARRAY_SIZE(lens); ++j) {
mkvol->name_len = lens[j];
int len = CLAMP(mkvol->name_len, 0,
UBI_MAX_VOLUME_NAME);
int rc = do_ioctl_ptr(mkvol_cmds[i].cmd, mkvol);
printf("ioctl(-1, %s, {vol_id=%d, alignment=%d"
", bytes=%jd, vol_type=%s, flags=%s"
", name_len=%hd, name=\"%.*s\"...}",
mkvol_cmds[i].str, mkvol->vol_id,
mkvol->alignment, (intmax_t) mkvol->bytes,
"UBI_STATIC_VOLUME",
"UBI_VOL_SKIP_CRC_CHECK_FLG",
mkvol->name_len, len, mkvol->name);
if (rc >= 0)
printf(" => [%d]", mkvol->vol_id);
printf(") = %s\n", errstr);
}
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_rnvol_req, rnvol);
for (size_t i = 0; i < ARRAY_SIZE(rnvol_cmds); ++i) {
fill_memory(rnvol, sizeof(*rnvol));
do_ioctl_ptr(rnvol_cmds[i].cmd, rnvol);
printf("ioctl(-1, %s, {count=%d, ents=[]}) = %s\n",
rnvol_cmds[i].str, rnvol->count, errstr);
rnvol->count = 1;
do_ioctl_ptr(rnvol_cmds[i].cmd, rnvol);
printf("ioctl(-1, %s, {count=%d, ents=[{vol_id=%d"
", name_len=%hd, name=\"\"...}]}) = %s\n",
rnvol_cmds[i].str, rnvol->count,
rnvol->ents[0].vol_id, rnvol->ents[0].name_len, errstr);
rnvol->count = UBI_MAX_RNVOL + 1;
for (size_t j = 0; j < UBI_MAX_RNVOL; ++j) {
fill_memory_ex(rnvol->ents[j].name,
sizeof(rnvol->ents[j].name), '0', 10);
}
rnvol->ents[0].name_len = 0;
rnvol->ents[1].name_len = 1;
rnvol->ents[2].name_len = 1;
rnvol->ents[2].name[1] = '\0';
rnvol->ents[3].name_len = 2;
rnvol->ents[3].name[1] = '\0';
rnvol->ents[4].name_len = UBI_MAX_VOLUME_NAME;
rnvol->ents[5].name_len = UBI_MAX_VOLUME_NAME;
rnvol->ents[5].name[UBI_MAX_VOLUME_NAME] = '\0';
rnvol->ents[6].name_len = UBI_MAX_VOLUME_NAME;
rnvol->ents[6].name[UBI_MAX_VOLUME_NAME - 1] = '\0';
rnvol->ents[7].name_len = UBI_MAX_VOLUME_NAME + 1;
rnvol->ents[8].name_len = UBI_MAX_VOLUME_NAME + 1;
rnvol->ents[8].name[UBI_MAX_VOLUME_NAME] = '\0';
do_ioctl_ptr(rnvol_cmds[i].cmd, rnvol);
printf("ioctl(-1, %s, {count=%d, ents=[",
rnvol_cmds[i].str, rnvol->count);
for (size_t j = 0; j < UBI_MAX_RNVOL; ++j) {
int len = CLAMP(rnvol->ents[j].name_len, 0,
UBI_MAX_VOLUME_NAME);
bool dots = rnvol->ents[j].name[len] &&
(len <= 0 || rnvol->ents[j].name[len - 1]);
printf("%s{vol_id=%d, name_len=%hd, name=\"%.*s\"%s}",
j ? ", " : "",
rnvol->ents[j].vol_id,
rnvol->ents[j].name_len,
len, rnvol->ents[j].name,
dots ? "..." : "");
}
printf("]}) = %s\n", errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_rsvol_req, rsvol);
fill_memory(rsvol, sizeof(*rsvol));
for (size_t i = 0; i < ARRAY_SIZE(rsvol_cmds); ++i) {
do_ioctl_ptr(rsvol_cmds[i].cmd, rsvol);
printf("ioctl(-1, %s, {bytes=%jd, vol_id=%d}) = %s\n",
rsvol_cmds[i].str, (intmax_t) rsvol->bytes,
rsvol->vol_id, errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct ubi_set_vol_prop_req, prop);
fill_memory(prop, sizeof(*prop));
prop->property = UBI_VOL_PROP_DIRECT_WRITE;
for (size_t i = 0; i < ARRAY_SIZE(prop_cmds); ++i) {
do_ioctl_ptr(prop_cmds[i].cmd, prop);
printf("ioctl(-1, %s, {property=%s, value=%#jx}) = %s\n",
prop_cmds[i].str, "UBI_VOL_PROP_DIRECT_WRITE",
(uintmax_t) prop->value, errstr);
}
do_ioctl(_IO(0x6f, 0x35), lmagic);
printf("ioctl(-1, %s, %#lx) = %s\n", "NET_REMOVE_IF", lmagic, errstr);
puts("+++ exited with 0 +++");
return 0;
}
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