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/*
* Check decoding of linux/fs.h 'X' ioctl commands.
*
* Copyright (c) 2020-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <linux/fs.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.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, FIFREEZE, 0);
printf("ioctl(-1, %s) = %s%s\n",
XLAT_STR(FIFREEZE), 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 {
uint32_t cmd;
const char *str;
bool has_arg;
} simple_cmds[] = {
{ ARG_STR(FIFREEZE), false },
{ ARG_STR(FITHAW), false },
{ _IO('X', 0xff), "_IOC(_IOC_NONE, 0x58, 0xff, 0)", true },
};
for (size_t i = 0; i < ARRAY_SIZE(simple_cmds); ++i) {
do_ioctl(simple_cmds[i].cmd, 0);
if (simple_cmds[i].has_arg) {
printf("ioctl(-1, " XLAT_FMT ", 0) = %s\n",
XLAT_SEL(simple_cmds[i].cmd, simple_cmds[i].str),
errstr);
} else {
printf("ioctl(-1, " XLAT_FMT ") = %s\n",
XLAT_SEL(simple_cmds[i].cmd, simple_cmds[i].str),
errstr);
}
static const unsigned long arg =
(unsigned long) 0xbadc0deddeadc0deULL;
do_ioctl(simple_cmds[i].cmd, arg);
if (simple_cmds[i].has_arg) {
printf("ioctl(-1, " XLAT_FMT ", %#lx) = %s\n",
XLAT_SEL(simple_cmds[i].cmd, simple_cmds[i].str),
arg, errstr);
} else {
printf("ioctl(-1, " XLAT_FMT ") = %s\n",
XLAT_SEL(simple_cmds[i].cmd, simple_cmds[i].str),
errstr);
}
}
static const struct {
uint32_t cmd;
const char *str;
} null_arg_cmds[] = {
{ ARG_STR(FITRIM) },
{ ARG_STR(FS_IOC_FSSETXATTR) },
{ ARG_STR(FS_IOC_FSGETXATTR) },
};
for (size_t i = 0; i < ARRAY_SIZE(null_arg_cmds); ++i) {
do_ioctl(null_arg_cmds[i].cmd, 0);
printf("ioctl(-1, " XLAT_FMT ", NULL) = %s\n",
XLAT_SEL(null_arg_cmds[i].cmd, null_arg_cmds[i].str),
errstr);
}
TAIL_ALLOC_OBJECT_CONST_PTR(struct fstrim_range, p_range);
do_ioctl_ptr(FITRIM, (char *) p_range + 1);
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FITRIM), (char *) p_range + 1, errstr);
p_range->start = (typeof(p_range->start)) 0xdeadbeefcafef00dULL;
p_range->len = (typeof(p_range->len)) 0xfacefeedbabec0deULL;
p_range->minlen = (typeof(p_range->minlen)) 0xbadc0deddeadc0deULL;
do_ioctl_ptr(FITRIM, p_range);
printf("ioctl(-1, %s, {start=%#jx, len=%ju, minlen=%ju}) = %s\n",
XLAT_STR(FITRIM), (uintmax_t) p_range->start,
(uintmax_t) p_range->len, (uintmax_t) p_range->minlen,
errstr);
/* FS_IOC_FSSETXATTR */
TAIL_ALLOC_OBJECT_CONST_PTR(struct fsxattr, p_fsxattr);
do_ioctl_ptr(FS_IOC_FSSETXATTR, (char *) p_fsxattr + 1);
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FS_IOC_FSSETXATTR), (char *) p_fsxattr + 1, errstr);
#define VALID_FSX_XFLAGS 0x8001fffb
#define INVALID_FSX_XFLAGS 0x7ffe0004
p_fsxattr->fsx_xflags = VALID_FSX_XFLAGS;
p_fsxattr->fsx_extsize = 0xdeadbeefU;
p_fsxattr->fsx_projid = 0xcafef00dU;
p_fsxattr->fsx_cowextsize = 0xbabec0deU;
do_ioctl_ptr(FS_IOC_FSSETXATTR, p_fsxattr);
printf("ioctl(-1, %s, {fsx_xflags=%s, fsx_extsize=%u, fsx_projid=%#x"
", fsx_cowextsize=%u}) = %s\n",
XLAT_STR(FS_IOC_FSSETXATTR),
XLAT_KNOWN(VALID_FSX_XFLAGS,
"FS_XFLAG_REALTIME|FS_XFLAG_PREALLOC|"
"FS_XFLAG_IMMUTABLE|FS_XFLAG_APPEND|"
"FS_XFLAG_SYNC|FS_XFLAG_NOATIME|"
"FS_XFLAG_NODUMP|FS_XFLAG_RTINHERIT|"
"FS_XFLAG_PROJINHERIT|FS_XFLAG_NOSYMLINKS|"
"FS_XFLAG_EXTSIZE|FS_XFLAG_EXTSZINHERIT|"
"FS_XFLAG_NODEFRAG|FS_XFLAG_FILESTREAM|"
"FS_XFLAG_DAX|FS_XFLAG_COWEXTSIZE|FS_XFLAG_HASATTR"),
p_fsxattr->fsx_extsize,
p_fsxattr->fsx_projid,
p_fsxattr->fsx_cowextsize,
errstr);
p_fsxattr->fsx_xflags = ~p_fsxattr->fsx_xflags;
do_ioctl_ptr(FS_IOC_FSSETXATTR, p_fsxattr);
printf("ioctl(-1, %s, {fsx_xflags=%s, fsx_extsize=%u, fsx_projid=%#x"
", fsx_cowextsize=%u}) = %s\n",
XLAT_STR(FS_IOC_FSSETXATTR),
XLAT_UNKNOWN(INVALID_FSX_XFLAGS, "FS_XFLAG_???"),
p_fsxattr->fsx_extsize,
p_fsxattr->fsx_projid,
p_fsxattr->fsx_cowextsize,
errstr);
/* FS_IOC_FSGETXATTR */
do_ioctl_ptr(FS_IOC_FSGETXATTR, (char *) p_fsxattr + 1);
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FS_IOC_FSGETXATTR), (char *) p_fsxattr + 1, errstr);
p_fsxattr->fsx_xflags = VALID_FSX_XFLAGS;
p_fsxattr->fsx_nextents = 0xfacefeedU;
if (do_ioctl_ptr(FS_IOC_FSGETXATTR, p_fsxattr) < 0) {
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FS_IOC_FSGETXATTR), p_fsxattr, errstr);
} else {
printf("ioctl(-1, %s, {fsx_xflags=%s, fsx_extsize=%u"
", fsx_nextents=%u, fsx_projid=%#x"
", fsx_cowextsize=%u}) = %s\n",
XLAT_STR(FS_IOC_FSGETXATTR),
XLAT_KNOWN(VALID_FSX_XFLAGS,
"FS_XFLAG_REALTIME|FS_XFLAG_PREALLOC|"
"FS_XFLAG_IMMUTABLE|FS_XFLAG_APPEND|"
"FS_XFLAG_SYNC|FS_XFLAG_NOATIME|"
"FS_XFLAG_NODUMP|FS_XFLAG_RTINHERIT|"
"FS_XFLAG_PROJINHERIT|FS_XFLAG_NOSYMLINKS|"
"FS_XFLAG_EXTSIZE|FS_XFLAG_EXTSZINHERIT|"
"FS_XFLAG_NODEFRAG|FS_XFLAG_FILESTREAM|"
"FS_XFLAG_DAX|FS_XFLAG_COWEXTSIZE|FS_XFLAG_HASATTR"),
p_fsxattr->fsx_extsize,
p_fsxattr->fsx_nextents,
p_fsxattr->fsx_projid,
p_fsxattr->fsx_cowextsize,
errstr);
}
p_fsxattr->fsx_xflags = ~p_fsxattr->fsx_xflags;
if (do_ioctl_ptr(FS_IOC_FSGETXATTR, p_fsxattr) < 0) {
printf("ioctl(-1, %s, %p) = %s\n",
XLAT_STR(FS_IOC_FSGETXATTR), p_fsxattr, errstr);
} else {
printf("ioctl(-1, %s, {fsx_xflags=%s, fsx_extsize=%u"
", fsx_nextents=%u, fsx_projid=%#x"
", fsx_cowextsize=%u}) = %s\n",
XLAT_STR(FS_IOC_FSGETXATTR),
XLAT_UNKNOWN(INVALID_FSX_XFLAGS, "FS_XFLAG_???"),
p_fsxattr->fsx_extsize,
p_fsxattr->fsx_nextents,
p_fsxattr->fsx_projid,
p_fsxattr->fsx_cowextsize,
errstr);
}
puts("+++ exited with 0 +++");
return 0;
}
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