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* bpf.c (BEGIN_BPF_CMD_DECODER(BPF_MAP_LOOKUP_ELEM),
BEGIN_BPF_CMD_DECODER(BPF_MAP_UPDATE_ELEM)): Print key and value
fields using PRINT_FIELD_ADDR64.
(BEGIN_BPF_CMD_DECODER(BPF_MAP_DELETE_ELEM)): Print key field using
PRINT_FIELD_ADDR64.
(BEGIN_BPF_CMD_DECODER(BPF_MAP_GET_NEXT_KEY)): Print key and next_key
field using PRINT_FIELD_ADDR64.
(BEGIN_BPF_CMD_DECODER(BPF_PROG_LOAD)): Print insns and log_buf fields
using PRINT_FIELD_ADDR64.
(BEGIN_BPF_CMD_DECODER(BPF_PROG_TEST_RUN)): Print data_in and data_out
fields using PRINT_FIELD_ADDR64.
* tests/bpf.c: Update expected output.
* 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
There is no need to call unwind_tcb_init before the tracee is attached.
* strace.c (alloctcb) [ENABLE_STACKTRACE]: Move unwind_tcb_init
invocation ...
(after_successful_attach) [ENABLE_STACKTRACE]: ... here.
(init) [ENABLE_STACKTRACE]: Remove unwind_tcb_init invocation loop.
* unwind.c (unwind_tcb_fin): Skip if tcp->unwind_queue is NULL.
This function is going to be used for other things that have to be done
right after a successful attach, hence the rename.
* strace.c (newoutf): Rename to after_successful_attach,
all users updated.
With libdw based unwinder, following warnings are reported
when -p is passed before -k:
$ ./strace -p 1 -k
...
./strace: dwfl_linux_proc_attach returned an error for process 0: No such file or directory
...
It seems that commit 54c7792b, "Fix libunwind segfault when -p is
passed before -k" doesn't fix the original issue.
* strace.c (init) [ENABLE_STACKTRACE]: Initialize unwind context only
if given tcb is initialized.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
The rest of the decoder uses offsetof to check the length.
* bpf.c (BEGIN_BPF_CMD_DECODER(BPF_OBJ_PIN),
BEGIN_BPF_CMD_DECODER(BPF_PROG_GET_NEXT_ID),
BEGIN_BPF_CMD_DECODER(BPF_PROG_GET_FD_BY_ID),
BEGIN_BPF_CMD_DECODER(BPF_MAP_GET_FD_BY_ID)): Use offsetof instead
of offsetofend.
* bpf.c (BEGIN_BPF_CMD_DECODER(BPF_MAP_CREATE)): Decode map_name
and map_ifindex fields that were added in Linux commits
v4.15-rc1~84^2~605^2~3 and v4.16-rc1~123^2~145^2~5^2~8, respectively.
* bpf_attr.h (struct BPF_MAP_CREATE_struct): Add map_name
and map_ifindex fields.
* tests/bpf.c (init_BPF_MAP_CREATE_attr7): New function.
(BPF_MAP_CREATE_checks): Remove const qualifier, add two more checks.
* bpf.c (BEGIN_BPF_CMD_DECODER(BPF_MAP_CREATE)): Skip printing
the rest of the structure if len is less than the offset of the end
of max_entries, map_flags, or inner_map_fd field.
* tests/bpf.c (BPF_MAP_CREATE_checks): Add two more checks.
As the value of -1 has a special meaning. The issue is complicated
by the fact that this constant is not exported by UAPI.
* xlat/numa_node.in: New file.
* bpf.c (BEGIN_BPF_CMD_DECODER(BPF_MAP_CREATE)): Print numa_node field
using printxvals_ex with a special xlat style.
* btrfs.c (MPERS_PRINTER_DECL(btrfs_ioctl)) <case
BTRFS_IOC_TREE_SEARCH_V2>: Use umove_or_printaddr_ignore_syserror
instead of tcp->u_error mangling around umove_or_printaddr call.
* defs.h (umove_or_printaddr64_ignore_syserror): New macro, a thin
wrapper around umoven_or_printaddr64_ignore_syserror.
(umove_or_printaddr_ignore_syserror): New macro, a thin wrapper around
umoven_or_printaddr_ignore_syserror.
We can't simply use print_xlat here due to the way those SKF_*_OFF
constants are defined.
* bpf_sock_filter.c (print_sock_filter_k): Use print_xlat32 for printing
SKF_AD_OFF, SKF_NET_OFF, and SKF_LL_OFF named constants.
As there are some possible users for it, apparently.
* defs.h (XLAT_STYLE_FORMAT_MASK): Update the value in order to
accommodate XLAT_STYLE_FMT_D.
(enum xlat_style) <XLAT_STYLE_FMT_D>: New enumeration entity.
(printxval64_d, printxval_d): New function, a shorthand for
printxvals_ex with a single xlat and XLAT_STYLE_FMT_D xlat style.
* xlat.c (sprint_xlat_val): Handle XLAT_STYLE_FMT_D.
Since xlat printing routines now have a notion of "style" that should be
used for printing xlat values, we can also employ this argument for
passing information about number printing format (unsigned decimal
or hexadecimal, so far).
* defs.h (XLAT_STYLE_FORMAT_SHIFT, XLAT_STYLE_FORMAT_MASK): New macro
constant.
(enum xlat_style) <XLAT_STYLE_FMT_X, XLAT_STYLE_FMT_U>: New enumeration
entities.
* xlat.c (xlat_verbose, xlat_format): New macro for checking specific
aspect of style argument.
(get_xlat_style): Use xlat_verbose for checking xlat verbosity style.
(sprint_xlat_val, print_xlat_val): New function, for easing printing
raw constant number with respect to printing format style.
(printxvals_ex, sprintxval_ex, printxval_searchn_ex,
printxval_searchn_ex, sprintflags_ex, printflags_ex, print_xlat_ex):
Use xlat_verbose macro for xlat verbosity style checks. Use
print_xlat_val instead of direct raw xlat value printing.
We cannot simply use print_xlat as PR_SET_PTRACER_ANY is defined
differently in kernel headers.
* prctl.c (SYS_FUNC(prctl)) <case PR_SET_PTRACER>: Use print_xlat_ex
for printing PR_SET_PTRACER_ANY named constant.
* futex.c [!FUTEX_OP_OPARG_SHIFT] (FUTEX_OP_OPARG_SHIFT): New macro
constant.
(SYS_FUNC(futex)): Use print_xlat for printing FUTEX_OP_OPARG_SHIFT
named constant.
Convert explicit constant printing logic into a printxval call in order
to account for xlat style setting.
* defs.h (ipc_private): New xlat array declaration.
* ipc_msg.c (SYS_FUNC(msgget)): Use printxval for printing IPC_PRIVATE.
* ipc_sem.c (SYS_FUNC(semtimedop)): Likewise.
* ipc_shm.c (SYS_FUNC(shmget)): Likewise.
* xlat/ipc_private.in: New file.
print_xlat_ex prints a named constant in accordance with xlat style
provided, print_xlat is a thin wrapper around print_xlat_ex that passes
stringified constant name as a string and XLAT_STYLE_DEFAULT as a style.
* defs.h (print_xlat_ex): New function prototype.
(print_xlat): New macro, a thin wrapper around print_xlat_ex.
* xlat.c (print_xlat_ex): New function.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
This will be needed later, with the introduction of user-configurable
xlat style setting (stored in xlat_verbosity variable).
* defs.h (XLAT_STYLE_VERBOSITY_MASK): New macro constant.
(enum xlat_style) <XLAT_STYLE_DEFAULT>: New enumeration entity.
(xlat_verbosity): New external declaration.
(printxvals, printxval_searchn, printxval_search_ex, sprintxval,
sprintflags, printflags64): Use XLAT_STYLE_DEFAULT instead of
XLAT_STYLE_ABBREV.
* strace.c (xlat_verbosity): New variable.
* xlat.c (get_xlat_style): New function.
(printxvals_ex, sprintxval_ex, printxval_searchn_ex, sprintflags_ex,
printflags_ex): Use it.
* defs.h (printxvals_ex): Rename from printxvals, add style argument.
(enum xlat_style): New enumeration.
(printxvals): New macro, a wrapper for printxvals_ex.
(printxval_searchn_ex): Rename from printxval_searchn, add style
argument.
(printxval_searchn): New macro, a wrapper for printxval_searchn_ex.
(printxval_search_ex): New macro, a wrapper for printxval_searchn_ex.
(sprintxval_ex): Rename from sprintxval, add style argument.
(sprintxval): New macro, a wrapper for sprintxval_ex.
(printflags_ex): Add style argument.
(sprintflags_ex): Rename from sprintflags, add style argument.
(sprintflags): New macro, a wrapper for sprintflags_ex.
(printflags64): Pass XLAT_STYLE_ABBREV as a style in printflags_ex call.
* netlink.c (decode_nlmsg_flags): Pass XLAT_STYLE_ABBREV as a style in
printflags_ex call.
* xlat.c (printxvals_ex): Rename from printxvals, add style argument,
handle it.
(sprintxval_ex): Rename from sprintxval, add style argument, handle it.
(printxval_searchn_ex): Rename from printxval_searchn, add style
argument, handle it.
(sprintflags_ex): Rename from sprintflags, add style argument,
handle it.
(printflags_ex): Add style argument, handle it.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
References: https://github.com/strace/strace/issues/27
Recent kernel siginfo changes, namely, v4.14-rc1~60^2^2~1,
v4.16-rc1~159^2~37, and v4.16-rc1~159^2~39, introduced ABI regressions
that render the whole siginfo interface unreliable.
Looks like the kernel side is not eager to fix the breakage,
so here is a workaround.
* tests/signal_receive.c (s_sig, s_code, s_pid, s_uid): New volatile
variables.
(handler): Add siginfo_t parameter, save siginfo_t fields.
(sig_print): Remove.
(main): Rewrite. Use variables saved by handler to print expected
siginfo output. Print diagnostics in case of siginfo mismatch.
* strace.spec.in (%check): Extract the diagnostics.
Closes: https://github.com/strace/strace/issues/21
The stack tracing feature used to be enabled in packages on x86_64 only.
This change enables -k option on all architectures.
* debian/control (Build-Depends) [!amd64]: Add pkg-config, libdw-dev,
and libiberty-dev.
* strace.spec.in (BuildRequires) [!x86_64]: Add
%buildrequires_stacktrace.
* tests/strace-k.test: When actual strace -k output doesn't match the
expected output because of limited architecture support, skip the test
on architectures that are not currently supported by libdw.
* tests/netlink_kobject_uevent.c (test_nlmsg_type_kernel): Create
a tail-allocated udev_monitor_netlink_header object and pass it
to sys_send.
(test_nlmsg_type_udev): Likewise. Check decoding of
udev_monitor_netlink_header object that ends in unmapped memory region.
* tests/netlink_kobject_uevent.c: Include <string.h>, <arpa/inet.h>,
and "netlink_kobject_uevent.h".
(test_nlmsg_type_udev, test_nlmsg_type_kernel): New functions.
(main): Use them.
BPF_PROG_QUERY was introduced in Linux commit v4.15-rc1~84^2~558^2~6.
* xlat/bpf_commands.in (BPF_PROG_QUERY): New constant.
* xlat/bpf_query_flags.in: New file.
* bpf.c: Include it.
(DECL_BPF_CMD_DECODER): Add priv argument for passing tcb private data.
(BEGIN_BPF_CMD_DECODER(BPF_PROG_QUERY)): New function.
(SYS_FUNC(bpf)) <bpf_cmd_decoders>: Add BPF_PROG_QUERY entry.
(SYS_FUNC(bpf)): Fetch buf on entering and exiting, pass buf on exiting,
retrieve private data on exiting, pass it to decoder as well, explicitly
rework rc handling logic for size argument printing.
* bpf_attr.h (struct BPF_PROG_QUERY_struct): New structure declaration.
(BPF_PROG_QUERY_struct_size, expected_BPF_PROG_QUERY_struct_size): New
macro.
* tests/bpf.c: Add checks for BPF_PROG_QUERY command.
And rename it to print_uint64_array_member to make the name sensible
without additional context.
* defs.h (print_uint64_array_member): New function prototype.
* btrfs.c (print_uint64): Move...
* util.c (print_uint64_array_member): ...here, drop "static" qualifier.
