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strace is now provided under the terms of the GNU Lesser General
Public License version 2.1 or later, see COPYING for more details.
strace test suite is now provided under the terms of the GNU General
Public License version 2 or later, see tests/COPYING for more details.
Avoid defining psw_compat_t and s390_compat_regs if their definitions
are provided by kernel. Before Linux commit v3.10-rc1~201^2~11,
these definition were available in <asm/ptrace.h>.
* configure.ac (AC_CHECK_TYPES): Check for s390_compat_regs.
* linux/s390x/arch_regs.c [HAVE_S390_COMPAT_REGS]: Do not define
psw_compat_t and s390_compat_regs.
* NEWS: Mention this fix.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
Commit v4.23~10 has broken the build with Android's libc because it
relies on the UAPI headers (such as <linux/signal.h>) to define various
types, rather than copying them into the libc headers (such as <signal.h>)
like most other Linux C libraries.
* linux/linux/signal.h: Rename to linux/signal.h.in.
* Makefile.am (strace_SOURCES): Remove linux/linux/signal.h.
(EXTRA_DIST): Add linux/signal.h.in.
(DISTCLEANFILES): Add linux/linux/signal.h.
* configure.ac (AC_CACHE_CHECK): Check whether <linux/signal.h>
can be used along with <signal.h>, install linux/linux/signal.h
workaround if they cannot be used together.
Reported-by: Elliott Hughes <enh@google.com>
Closes: https://github.com/strace/strace/issues/72
* configure.ac (AC_CHECK_TYPES): Include <linux/types.h> before
<linux/pkt_sched.h> to check for struct tc_sizespec on linux kernel
headers without v2.6.29-rc4~77^2~26 fix.
An ability to specify custom depth is going to be needed later to check
IFLA_AF_SPEC decoding.
* configure.ac (AC_CHECK_DECLS): Check for TCA_STAB_DATA in
<linux/pkt_sched.h>.
* tests/test_nlattr.h (TEST_NESTED_NLATTR_ARRAY_EX): Rename from
TEST_NESTED_NLATTR_ARRAY, add depth_ argument, perform padding and
output accordingly.
(TEST_NESTED_NLATTR_ARRAY): New macro, a thin wrapper around
TEST_NESTED_NLATTR_ARRAY_EX.
* tests/nlattr_tca_stab.c [!HAVE_DECL_TCA_STAB_DATA] (TCA_STAB_DATA):
New enumeration declaration.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
* configure.ac (AC_CHECK_DECLS): Check for IFLA_PORT_SELF, IFLA_PROTINFO, and
IFLA_XDP in <linux/rtnetlink.h>.
* tests/nlattr_ifla.h: New file.
* tests/Makefile.am (EXTRA_DIST): Add it.
* tests/nlattr_ifla_brport.c [!HAVE_DECL_IFLA_PROTINFO] (IFLA_PROTINFO):
New declaration.
(hdrlen, init_ifinfomsg, print_ifinfomsg): Remove.
(IFLA_ATTR): Define to IFLA_PROTINFO.
Include nlattr_ifla.h.
* tests/nlattr_ifla_port.c [!HAVE_DECL_IFLA_PORT_SELF] (IFLA_PORT_SELF):
New declaration.
(hdrlen, init_ifinfomsg, print_ifinfomsg): Remove.
(IFLA_ATTR): Define to IFLA_PORT_SELF.
Include nlattr_ifla.h.
* tests/nlattr_ifla_xdp.c
* tests/nlattr_ifla_xdp.c [!HAVE_DECL_IFLA_XDP] (IFLA_XDP): New
declaration.
(hdrlen, init_ifinfomsg, print_ifinfomsg): Remove.
(IFLA_ATTR): Define to IFLA_XDP.
Include nlattr_ifla.h.
This is needed for old Linux UAPI headers that do no contain commit
v3.1-rc2~19^2~29.
* configure.ac: Include <sys/socket.h> before <linux/rtnetlink.h>
in AC_CHECK_* invocations.
Historically, type definitions and declarations related to netlink route
interface attributes were in linux/rtnetlink.h, later they were moved
elsewhere (first linux/if.h, then linux/if_link.h) with the inclusion
of the corresponding header file in linux/rtnetlink.h.
* configure.ac: Use <linux/rtnetlink.h> instead of <linux/if_link.h>
in checks for interface netlink attributes-related declarations
and definitions.
* configure.ac (AC_CHECK_TYPES): Check for struct fib_rule_port_range
in <linux/fib_rules.h>.
* tests/nlattr_fib_rule_hdr.c: Include <linux/in.h>.
(FRA_PROTOCOL, FRA_IP_PROTO, FRA_SPORT_RANGE, FRA_DPORT_RANGE): New
macro constants.
[!HAVE_STRUCT_FIB_RULE_PORT_RANGE] (struct fib_rule_port_range): New
type.
(main): Check decoding of new FRA_* netlink attributes.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
Apparently, struct sockaddr_l2 changed over time: the l2_bdaddr_type
field was added only by commit v3.5-rc1~35^2~3^2~18^2^2~39.
* configure.ac (AC_CHECK_HEADERS): Move bluetooth/bluetooth.h check into
a separate check.
(AC_CHECK_HEADERS([bluetooth/bluetooth.h])): New check, also checks for
struct sockaddr_l2.l2_bdaddr_type member in case of success.
* sockaddr.c (print_sockaddr_data_bt) <case offsetof(struct sockaddr_l2,
l2_bdaddr_type)>: Add to sizeof(struct sockaddr_l2) case. Print
l2_bdaddr_type field only if the provided sockaddr is big enough.
* tests/net-sockaddr.c (check_l2): Put l2_bdaddr_type usage/printing
under HAVE_STRUCT_SOCKADDR_L2_L2_BDADDR_TYPE ifdef, add a check for the
sockaddr_l2 structure without the l2_bdaddr_type field.
Some headers define struct f_owner_ex, some struct __kernel_f_owner_ex,
we have to support both variants.
* configure.ac (AC_CHECK_TYPES): Check for "struct f_owner_ex"
and "struct __kernel_f_owner_ex" in <linux/fcntl.h>.
* f_owner_ex.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* configure.ac: Check for _Static_assert if static_assert
is not available.
* static_assert.h [!HAVE_STATIC_ASSERT && HAVE__STATIC_ASSERT]
(static_assert): Define to _Static_assert.
* Makefile.am (today): Consistently print the UTC date in C locale.
* configure.ac (RPM_CHANGELOGTIME, DEB_CHANGELOGTIME): Likewise.
* maint/update_copyright_years.sh: Likewise.
* copyright-year-gen: Likewise. When $SOURCE_DATE_EPOCH is non-empty,
use it as fallback date before the current system date.
References: https://github.com/strace/strace/pull/68
Introduce --enable-stacktrace configure option to control whether
-k option support is compiled in, --with-libunwind option remains
available to control whether libunwind can be used as an unwinder.
* m4/st_demangle.m4: New file.
* m4/st_libunwind.m4: Likewise.
* m4/st_stacktrace.m4: Likewise.
* configure.ac: Replace all libunwind and libiberty checks
with a single st_STACKTRACE invocation.
* Makefile.am: Conditionalize checks for USE_LIBUNWIND and USE_DEMANGLE
on ENABLE_STACKTRACE.
[ENABLE_STACKTRACE] (strace_SOURCES): Append unwind.c and unwind.h.
* strace.1.in: Replace libunwind with an unwinder-agnostic wording.
* defs.h: Replace USE_LIBUNWIND with ENABLE_STACKTRACE.
* strace.c: Likewise.
(print_version): Print stack-trace instead of stack-unwind.
* syscall.c: Replace USE_LIBUNWIND with ENABLE_STACKTRACE.
* tests/Makefile.am: Likewise. Replace LIBUNWIND_TESTS
with STACKTRACE_TESTS.
* tests/strace-V.test: Update expected output.
* configure.ac (AC_CHECK_HEADERS([linux/bpf.h])): Check for
struct bpf_insn.
* tests/bpf.c: Remove the test guard, include "scno.h", "bpf_attr.h",
"xlat.h", and "xlat/bpf_commands.h". Conditionalize inclusion of
<linux/bpf.h> on HAVE_LINUX_BPF_H. Remove all HAVE_UNION_* checks.
(BPF_ATTR_DATA_FIELD): New macro.
(bpf_attr_data): New union. Note that it is larger than modern
union bpf_attr, this allows more checks to be implemented in the future.
(sizeof_attr, test_bpf_): Replace union bpf_attr with
union bpf_attr_data.
(DEF_BPF_INIT_FIRST): Replace union bpf_attr with the corresponding
structure.
(init_BPF_MAP_CREATE_attr): Replace union bpf_attr with
struct BPF_MAP_CREATE_struct.
(init_BPF_MAP_LOOKUP_ELEM_attr): Replace union bpf_attr with
struct BPF_MAP_LOOKUP_ELEM_struct.
(init_BPF_MAP_UPDATE_ELEM_attr): Replace union bpf_attr with
struct BPF_MAP_UPDATE_ELEM_struct.
(init_BPF_MAP_DELETE_ELEM_attr): Replace union bpf_attr with
struct BPF_MAP_DELETE_ELEM_struct.
(init_BPF_MAP_GET_NEXT_KEY_attr): Replace union bpf_attr with
struct BPF_MAP_GET_NEXT_KEY_struct.
(init_BPF_PROG_LOAD_attr): Replace union bpf_attr with
struct BPF_PROG_LOAD_struct.
(init_BPF_OBJ_PIN_attr): Replace union bpf_attr with
struct BPF_OBJ_PIN_struct.
(init_BPF_PROG_ATTACH_attr): Replace union bpf_attr with
struct BPF_PROG_ATTACH_struct.
(init_BPF_PROG_DETACH_attr): Replace union bpf_attr with
struct BPF_PROG_DETACH_struct.
(init_BPF_PROG_GET_NEXT_ID_attr): Replace union bpf_attr with
struct BPF_PROG_GET_NEXT_ID_struct.
(sample_BPF_PROG_TEST_RUN_attr): Change type from union bpf_attr to
struct BPF_PROG_TEST_RUN_struct, all users updated.
(sample_BPF_OBJ_GET_INFO_BY_FD_attr): Change type from union bpf_attr
to struct BPF_OBJ_GET_INFO_BY_FD_struct, all users updated.
Rather than list by hand some members of union bpf_attr that we check
for availability, automatically list all members of union bpf_attr we
are aware of.
* m4/gen_bpf_attr_m4.sh: New file.
* bootstrap: Invoke it.
* configure.ac (AC_CHECK_HEADERS([linux/bpf.h])): Use st_BPF_ATTR.
* m4/.gitignore: New file.
We are going to use static_assert provided by <assert.h> or,
if it doesn't work, our cheap imitation that doesn't display
the message specified as the second argument of static_assert.
* configure.ac (AC_CACHE_CHECK): Check for static_assert in <assert.h>,
define HAVE_STATIC_ASSERT if it is available.
* static_assert.h: New file.
* Makefile.am (strace_SOURCES): Add it.
Add -e inject=SET:delay_enter= and -e inject=SET:delay_exit= options.
* configure.ac (AC_SEARCH_LIBS): Check for timer_create -lrt.
* delay.c: New file.
* Makefile.am (strace_SOURCES): Add it.
(strace_LDADD): Add $(timer_LIBS).
* defs.h (INJECT_F_DELAY_ENTER, INJECT_F_DELAY_EXIT,
TCB_INJECT_DELAY_EXIT, TCB_DELAYED, inject_delay_exit, syscall_delayed):
New macros.
(alloc_delay_data, fill_delay_data, is_delay_timer_created,
arm_delay_timer, delay_tcb): New prototypes.
(struct inject_data): Replace reserved field with delay_idx.
(struct tcb): Add delay_expiration_time field.
* filter_qualify.c (parse_delay_token): New function.
(parse_inject_token): Use it.
(qualify_inject_common): Initialize struct inject_opts.data.delay_idx.
* strace.c: Include <setjmp.h>
(timer_jmp_buf, timer_set): New static variables.
(timer_sighandler, restart_delayed_tcb, restart_delayed_tcbs): New
functions.
(init): Block SIGALRM, set SIGALRM handler.
(dispatch_event): Do not restart delayed syscalls.
(next_event): Unblock SIGALRM during wait4 invocation.
* syscall.c (tamper_with_syscall_entering): Arm delay timer if
INJECT_F_DELAY_ENTER injection flag is set, set TCB_INJECT_DELAY_EXIT
flag if INJECT_F_DELAY_EXIT injection flag is set.
tamper_with_syscall_exiting): Arm delay timer if inject_delay_exit.
(syscall_exiting_trace): Call tamper_with_syscall_exiting in case of
inject_delay_exit.
(syscall_exiting_finish): Clear TCB_INJECT_DELAY_EXIT flag.
* strace.1.in: Document delay injection.
* NEWS: Mention this improvement.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
Depending on libc implementation, various -lrt functions can be
implemented either in -lc or in -lrt. For example, starting with
glibc-2.17 the clock_* suite of functions is available directly in -lc.
Check whether clock_* and mq_* suites of functions are provided
by -lrt or by the main C library, do not link with -lrt unnecessarily.
This change affects only tests yet, but this is going to be
more important as soon as strace starts using clock_gettime.
* configure.ac (AC_SEARCH_LIBS): Check for clock_gettime and mq_open
in -lrt.
(AC_SUBST): Add clock_LIBS and mq_LIBS.
* tests/Makefile.am (mq_LDADD): Replace -lrt with $(mq_LIBS).
(threads_execve_LDADD, times_LDADD): Replace -lrt with $(clock_LIBS).
The field has been introduced in Linux commit v4.15-rc1~135^2~17.
* btrfs.c: Implement decoding of
struct btrfs_ioctl_logical_ino_args.flags field.
* configure.ac: Check for struct btrfs_ioctl_logical_ino_args.flags
presence in linux/btrfs.h.
* tests/btrfs.c: Update expected output, add additional checks.
* xlat/btrfs_logical_ino_args_flags.in: New file.
The old location of strace-devel mailing list is defunct, it used to
lose email messages and sometimes did not deliver any mails for days.
The mailing list has been moved to strace-devel@lists.strace.io.
* CREDITS.in: Update the mailing list address.
(Zhang Le): Update email address.
* README: Update the mailing list address.
* README.md: Likewise.
* configure.ac (AC_INIT): Likewise.
* strace.1.in (.SH REPORTING BUGS): Likewise.
* strace-log-merge.1.in (.SH REPORTING BUGS): Likewise.
* sched.c (SYS_FUNC(sched_getattr)): Update the mailing list reference.
* tests/scno_tampering.sh: Likewise.
* qemu_multiarch_testing/README: Update git repository address.
* NEWS: Mention the change of the mailing list address.
Closes: https://github.com/strace/strace/issues/38
When <sys/reg.h> is included after <linux/ptrace.h>, the build fails
on m68k with the following diagnostics:
In file included from /usr/include/linux/ptrace.h:101:0,
from ptrace.h:51,
from sigreturn.c:2:
/usr/include/m68k-linux-gnu/sys/reg.h:26:3: error: expected identifier
before numeric constant
PT_D1 = 0,
^
Apparently, the only architecture where strace needs definitions
provided by <sys/reg.h> is x86_64, other three (m68k, tile, and x86)
are fine with definitions already provided by <linux/ptrace.h>.
Fix the issue by getting rid of <sys/reg.h> and defining necessary
macros in linux/x86_64/arch_regs.h file.
* configure.ac (AC_CHECK_HEADERS): Remove sys/reg.h.
* regs.h: Do not include <sys/reg.h>.
* linux/x86_64/arch_regs.h (R15, R14, R13, R12, RBP, RBX, R11, R10,
R9, R8, RAX, RCX, RDX, RSI, RDI, ORIG_RAX, RIP, CS, EFLAGS, RSP, SS,
FS_BASE, GS_BASE, DS, ES, FS, GS): New macros.
* NEWS: Mention this fix.
Fixes: v4.21~21 ("Include <sys/ptrace.h> early")
From the very first commit when CRIS architecture support was introduced
and up to this comment that ends the agony of this non-functional code,
this support was incomplete and could never be compiled.
* Makefile.am (EXTRA_DIST): Remove linux/crisv*.
* clone.c: Remove CRISV* checks.
* configure.ac ($host_cpu == cris*): Remove.
* linux/crisv10: Remove.
* linux/crisv32: Likewise.
Fixes: v4.5.18-77-gea0e6e8 ("CRIS support by Hinko Kocevar ...")
* configure.ac (AC_ARG_ENABLE([mpers])): Allow m32 and mx32 values
for --enable-mpers option.
* m4/mpers.m4 (st_MPERS): Check for personality support if personality
name is provided as an option. Fail if the requested personality
support is not available.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
By very popular demand.
While we are here, let's refactor the condition for old_mmap_pgoff into
an arch-specific one, as it is used more than in one place.
* NEWS: Mention this.
* strace.1.in (.SH "MULTIPLE PERSONALITY SUPPORT"): Likewise.
* configure.ac (case "$host_cpu" in) <s390x>: Set arch_m32 to s390, set
cc_flags_m32 to -m31.
(st_MPERS([m32])): Add s390x.
* defs.h [S390X]: Define NEED_UID16_PARSERS.
* linux/s390/arch_sigreturn.c [!S390_FRAME_PTR] (S390_FRAME_PTR): New
macro, define to s390_frame_ptr.
[!SIGNAL_FRAMESIZE] (SIGNAL_FRAMESIZE): New macro, define to
__SIGNAL_FRAMESIZE.
[!PTR_TYPE] (PTR_TYPE): New macro, define to unsigned long.
(arch_sigreturn): Use S390_FRAME_PTR, SIGNAL_FRAMESIZE, and PTR_TYPE
instead of s390_frame_ptr, __SIGNAL_FRAMESIZE, and pointer-sized type,
respectively.
* linux/s390/get_error.c [!ARCH_REGSET] (ARCH_REGSET): New macro, define
* to s390_regset.
(get_error): Use it instead of s390_regset.
* linux/s390/get_scno.c (arch_get_scno): Likewise.
* linux/s390/get_syscall_args.c (get_syscall_args): Likewise.
* linux/s390/set_error.c (arch_set_error, arch_set_success): Likewise.
* linux/s390/set_scno.c (arch_set_scno): Likewise.
* linux/s390x/arch_regs.c (psw_compat_t, s390_compat_regs,
s390x_regs_union, s390_frame_ptr, s390x_frame_ptr, s390x_io): New
variables.
(s390_regset, s390x_regset, ARCH_REGS_FOR_GETREGSET,
ARCH_IOVEC_FOR_GETREGSET, ARCH_PC_REG, ARCH_PERSONALITY_0_IOV_SIZE,
ARCH_PERSONALITY_1_IOV_SIZE): New macros.
* linux/s390x/arch_regs.h (s390_frame_ptr, s390x_frame_ptr): New
prototypes.
* linux/s390x/arch_rt_sigframe.c: Conditionalize on tcp->currpers.
* linux/s390x/arch_sigreturn.c: Likewise.
* linux/s390x/get_error.c: Likewise.
* linux/s390x/get_scno.c: Likewise.
* linux/s390x/get_syscall_args.c: Likewise.
* linux/s390x/set_error.c: Likewise.
* linux/s390x/set_scno.c: Likewise.
* linux/s390x/errnoent1.h: New file.
* linux/s390x/ioctls_arch1.h: Likewise.
* linux/s390x/ioctls_inc1.h: Likewise.
* linux/s390x/signalent1.h: Likewise.
* linux/s390x/syscallent1.h: Likewise.
* Makefile.am (EXTRA_DIST): Add new files added to linux/s390x.
* supported_personalities.h [S390X] (SUPPORTED_PERSONALITIES): Define
to 2.
* tests/strace-V.test: Add s390 to the list of architectures that have
m32 personality.
* linux/s390/arch_defs.h (HAVE_ARCH_OLD_MMAP_PGOFF): New macro.
* linux/s390x/arch_defs.h: Likewise.
* mem.c: Replace #ifdef S390 with #ifdef HAVE_ARCH_OLD_MMAP_PGOFF.
* pathtrace.c: Likewise.
Because some architectures are very, very special.
* configure.ac (cc_flags_m32, cc_flags_mx32): New variables. AC_SUBST
them.
* m4/mpers.m4 (MPERS_CFLAGS): Use instead of CFLAG, pushdef as
$cc_flags_$1.
Use mpers_name instead of CFLAG in AC_CACHE_CHECK messages.
Pass MPERS_CFLAGS as the second argument to mpers_test.sh
* mpers.sh: Add CC_ARCH_FLAGS as the second argument (PARSER_FILE
is moved to the third one). Do not expect leading dash in ARCH_FLAG
anymore.
* mpers_test.sh (mpers_cc_flags): New variable, initialise to the second
command line argument.
Pass $mpers_name without leading dash to mpers.sh.
Pass $mpers_cc_flags as the second argument to mpers.sh ($sample is
the third argument now).
* Makefile.am (mpers-m%.stamp:): Pass $(mpers_CC_FLAGS) as the second
argument to mpers.sh ($$f is now the third argument).
($(mpers_m32_targets)): Define target variable mpers_CC_FLAGS with the
value of @cc_flags_m32@
($(mpers_mx32_targets)): Define target variable mpers_CC_FLAGS with the
value of @cc_flags_mx32@
* tests/Makefile.am (MERS_CC_FLAGS): New variable.
* bootstrap: Append @cc_flags_$1@ to MPERS_CC_FLAGS. Append
$(MPERS_CC_FLAGS) to ARCH_MFLAGS.
* configure.ac [$arch = mips]: Use AC_MSG_FAILURE instead of
AC_MSG_ERROR when _MIPS_SIM cannot be determined. Use AC_MSG_ERROR
instead of AC_MSG_FAILURE when syscallent stubs cannot be generated.
On architectures supporting multiple personalities, multiple
personalities support in strace is required for proper decoding of
structures used by tracees with personalities that differ from the
personality of strace.
New configure options control whether multiple personalities support
in strace is mandatory, optional, or disabled.
The default is changed from what is now equivalent of
--enable-mpers=check (automatically detect whether required mpers
support could be enabled) to --enable-mpers (terminate the build
if required mpers support could not be enabled).
* configure.ac (AC_ARG_ENABLE([mpers])): New option.
* m4/mpers.m4 (st_MPERS): Use enable_mpers. Terminate the build
if mpers could not be enabled and enable_mpers==yes.
* strace.spec.in: Specify --enable-mpers=check to %configure.
* debian/rules (build/Makefile, build64/Makefile): Specify
--enable-mpers=check to configure.
Co-authored-by: Dmitry V. Levin <ldv@altlinux.org>
Suggested-by: DJ Delorie <dj@redhat.com>
This is the location where this header is installed on Debian-based
systems.
* configure.ac: Check for libiberty/demangle.h in addition to
demangle.h.
* unwind.c [USE_DEMANGLE]: Include either <demangle.h> or
<libiberty_demangle.h> based on the presence of HAVE_DEMANGLE_H and
HAVE_LIBIBERTY_DEMANGLE_H macros.
* configure.ac (arch_native): New variable, set to arch.
* tests/Makefile.am (NATIVE_ARCH): New variable, set to @arch_native@.
(AM_TEST_LOG_FLAGS): Pass NATIVE_ARCH as STRACE_NATIVE_ARCH environment
variable.
Use the OS definition of _PATH_BSHELL macro if it is available.
* configure.ac (AC_CHECK_HEADERS): Add paths.h.
* strace.c [HAVE_PATHS_H]: Include paths.h.
As linux kernel provides a compatible linux/ptp_clock.h header since
commit v3.8-rc1~139^2~514, there is no need for a local copy.
* linux/ptp_clock.h: Remove.
* Makefile.am (EXTRA_DIST): Remove it.
* configure.ac (AC_CHECK_TYPES): Check for struct ptp_sys_offset
in <linux/ptp_clock.h>.
* ioctl.c (ioctl_decode) <case '='>: Conditionalize
on [HAVE_STRUCT_PTP_SYS_OFFSET].
* ptp.c: Likewise.
As linux kernel provides a compatible mtd/ubi-user.h header since
commit v3.7-rc1~85^2~17, there is no need for a local copy.
* linux/ubi-user.h: Remove.
* Makefile.am (EXTRA_DIST): Remove it.
* configure.ac (AC_CHECK_MEMBERS): Check
for struct ubi_attach_req.max_beb_per1024 in <mtd/ubi-user.h>.
* ioctl.c (ioctl_decode) <case 'o', case 'O'>: Conditionalize
on HAVE_STRUCT_UBI_ATTACH_REQ_MAX_BEB_PER1024.
* ubi.c: Likewise.
