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/*
* Check decoding of FS_IOC_FIEMAP ioctl command.
*
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/fiemap.h>
#include <linux/fs.h>
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, FS_IOC_FIEMAP, 0);
printf("ioctl(-1, %s, NULL) = %s%s\n",
XLAT_STR(FS_IOC_FIEMAP), 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
TAIL_ALLOC_OBJECT_VAR_PTR(struct fiemap, fiemap);
do_ioctl_ptr(FS_IOC_FIEMAP, (char *) fiemap + 1);
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FS_IOC_FIEMAP), (char *) fiemap + 1, errstr);
#define VALID_FM_FLAGS 0x7
#define INVALID_FM_FLAGS 0xfffffff8
fiemap->fm_start = (typeof(fiemap->fm_start)) 0xdeadbeefcafef00dULL;
fiemap->fm_length = (typeof(fiemap->fm_length)) 0xfacefeedbabec0deULL;
fiemap->fm_flags = VALID_FM_FLAGS;
fiemap->fm_mapped_extents = 0xbadc0ded;
fiemap->fm_extent_count = 0xdeadc0de;
int rc = do_ioctl_ptr(FS_IOC_FIEMAP, fiemap);
printf("ioctl(-1, %s, {fm_start=%ju, fm_length=%ju"
", fm_flags=%s, fm_extent_count=%u}",
XLAT_STR(FS_IOC_FIEMAP),
(uintmax_t) fiemap->fm_start, (uintmax_t) fiemap->fm_length,
XLAT_KNOWN(VALID_FM_FLAGS,
"FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR|"
"FIEMAP_FLAG_CACHE"),
fiemap->fm_extent_count);
if (rc < 0) {
printf(") = %s\n", errstr);
} else {
printf(" => {fm_flags=%s, fm_mapped_extents=%u, ",
XLAT_KNOWN(VALID_FM_FLAGS,
"FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR|"
"FIEMAP_FLAG_CACHE"),
fiemap->fm_mapped_extents);
#if VERBOSE
printf("fm_extents=%p", fiemap + 1);
#else
printf("...");
#endif
printf("}) = %s\n", errstr);
}
#define VALID_FE_FLAGS 0x3f8f
#define INVALID_FE_FLAGS 0xffffc070
fiemap = tail_alloc(sizeof(*fiemap) + 2 * sizeof(fiemap->fm_extents[0]));
fiemap->fm_start = (typeof(fiemap->fm_start)) 0xdeadbeefcafef00dULL;
fiemap->fm_length = (typeof(fiemap->fm_length)) 0xfacefeedbabec0deULL;
fiemap->fm_flags = ~VALID_FM_FLAGS;
fiemap->fm_mapped_extents = 2;
fiemap->fm_extent_count = 0xdeadc0de;
fiemap->fm_extents[0].fe_logical = 0xfacefed1deadbef1;
fiemap->fm_extents[0].fe_physical = 0xfacefed2deadbef2;
fiemap->fm_extents[0].fe_length = 0xfacefed3deadbef3;
fiemap->fm_extents[0].fe_flags = VALID_FE_FLAGS;
fiemap->fm_extents[1].fe_logical = 0xfacefed1deadbef4;
fiemap->fm_extents[1].fe_physical = 0xfacefed2deadbef5;
fiemap->fm_extents[1].fe_length = 0xfacefed3deadbef6;
fiemap->fm_extents[1].fe_flags = ~VALID_FE_FLAGS;
rc = do_ioctl_ptr(FS_IOC_FIEMAP, fiemap);
printf("ioctl(-1, %s, {fm_start=%ju, fm_length=%ju"
", fm_flags=%s, fm_extent_count=%u}",
XLAT_STR(FS_IOC_FIEMAP),
(uintmax_t) fiemap->fm_start, (uintmax_t) fiemap->fm_length,
XLAT_UNKNOWN(INVALID_FM_FLAGS, "FIEMAP_FLAG_???"),
fiemap->fm_extent_count);
if (rc < 0) {
printf(") = %s\n", errstr);
} else {
printf(" => {fm_flags=%s, fm_mapped_extents=%u, ",
XLAT_UNKNOWN(INVALID_FM_FLAGS, "FIEMAP_FLAG_???"),
fiemap->fm_mapped_extents);
#if VERBOSE
printf("fm_extents=[{fe_logical=%ju, fe_physical=%ju"
", fe_length=%ju, fe_flags=%s}"
", {fe_logical=%ju, fe_physical=%ju"
", fe_length=%ju, fe_flags=%s}]",
(uintmax_t) fiemap->fm_extents[0].fe_logical,
(uintmax_t) fiemap->fm_extents[0].fe_physical,
(uintmax_t) fiemap->fm_extents[0].fe_length,
XLAT_KNOWN(VALID_FE_FLAGS,
"FIEMAP_EXTENT_LAST|"
"FIEMAP_EXTENT_UNKNOWN|"
"FIEMAP_EXTENT_DELALLOC|"
"FIEMAP_EXTENT_ENCODED|"
"FIEMAP_EXTENT_DATA_ENCRYPTED|"
"FIEMAP_EXTENT_NOT_ALIGNED|"
"FIEMAP_EXTENT_DATA_INLINE|"
"FIEMAP_EXTENT_DATA_TAIL|"
"FIEMAP_EXTENT_UNWRITTEN|"
"FIEMAP_EXTENT_MERGED|"
"FIEMAP_EXTENT_SHARED"),
(uintmax_t) fiemap->fm_extents[1].fe_logical,
(uintmax_t) fiemap->fm_extents[1].fe_physical,
(uintmax_t) fiemap->fm_extents[1].fe_length,
XLAT_UNKNOWN(INVALID_FE_FLAGS, "FIEMAP_EXTENT_???"));
#else
printf("...");
#endif
printf("}) = %s\n", errstr);
}
/* The live version of this test is in btrfs.c */
puts("+++ exited with 0 +++");
return 0;
}
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