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Apparently, it was slightly different with no apparent reason. Use
a single routine to print this message now.
* defs.h (print_syscall_resume): New function declaration.
* strace.c (print_event_exit): Replace open-coding of "<... resumed>"
message printing with a print_syscall_resume() call.
* syscall.c (syscall_exiting_trace): Likewise.
(print_syscall_resume): New function.
* tests/threads-execve.c: Update expected output.
It is possible that some tracees call a lot of cheap syscalls too fast,
and that can lead to starvation to the point some tracees are not served
for indefinite amount of time. In order to solve that unfairness, try
to collect all the pending tracees first along with the relevant
information and only then dispatch the events.
* defs.h: Include "list.h".
(struct tcb): Add wait_data_idx and wait_list fields.
* strace.c (struct tcb_wait_data): Add "msg" field.
(tcb_wait_tab): New static variable.
(expand_tcbtab): Resize tcb_wait_tab along with tcbtab, provide
an additional slot for extra event.
(droptcb): Remove tcp from wait_list.
(maybe_switch_tcbs): Get old pid from
tcb_wait_tab[tcp->wait_data_idx].msg.
(next_event): Add pending_tcps, extra_tcp, wait_nohang, elem, and
wait_tab_pos variables; check for elements in pending_tcps and skip
waiting if the list is not empty; check for extra_tcp and skip waiting
along with swapping wait_data_idx with wait_extra_data_idx;
after the initial wait, call wait4() in loop with WNOHANG flag set;
fetch siginfo on signal and eventmsg on PTRACE_EVENT_EXEC;
return the first tcp in pending_tcps list.
* tests/Makefile.am (XFAIL_TEST): Remove looping_threads.test.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=478419
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=526740
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=851457
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1609318
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1610774
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
Co-Authored-by: Denys Vlasenko <dvlasenk@redhat.com>
Co-Authored-by: Andreas Schwab <aschwab@redhat.com>
Co-Authored-by: Jeff Law <law@redhat.com>
Co-Authored-by: DJ Delorie <dj@redhat.com>
The sys_bpf(BPF_OBJ_GET_INFO_BY_FD, &bpf_prog_get_info_attr, ...) is
called in a loop. The bpf_prog_get_info_attr.info object is in size 104
but bpf_prog_get_info_attr.info_len is in size 168. Hence, if the prog
is jited, the second iteration onwards will have nr_jited_ksyms == 1
which is asking the kernel to fill the
bpf_prog_get_info_attr.info.jited_ksyms and it is NULL.
* tests/bpf-obj_get_info_by_fd.c (main): Clear memory beyond prog_info
at the start of every iteration.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
This guarantees that map_info and prog_info objects are not accessed
out of bounds.
* tests/bpf-obj_get_info_by_fd.c: Include <string.h>.
(main): Use tail_alloc instead of calloc for map_info and prog_info.
Change strace-k.test to use chdir syscall instead of getpid syscall
because the latter is not universally available, e.g. there is no getpid
syscall on alpha.
* tests/stack-fcall-3.c (f3) <default>: Replace getpid with chdir.
* tests/strace-k.test: Likewise.
* tests/strace-k.expected: Likewise.
* tests/strace-k-demangle.expected: Likewise.
* NEWS: Mention this.
Indent the C preprocessor directives to reflect their nesting
using the following script:
$ cppi -l $(git grep -El '^[[:space:]]*#[[:space:]]*(if|ifdef|ifndef|elif|else|endif|define|pragma)[[:space:]]' |grep -v '\.sh$') |while read f; do
cppi < "$f" > "$f".cppi; mv "$f".cppi "$f"
done
* xlat/bpf_map_types.in (BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE): New
constant introduced by Linux kernel commit v4.20-rc1~14^2~124^2~12^2~7.
(BPF_MAP_TYPE_QUEUE, BPF_MAP_TYPE_STACK): New constants introduced
by Linux kernel commit v4.20-rc1~151^2~32^2~11^2~3.
* xlat/bpf_commands.in (BPF_MAP_LOOKUP_AND_DELETE_ELEM): New constant
introduced by Linux kernel commit v4.20-rc1~151^2~32^2~11^2~2.
* tests/bpf.c (BPF_MAP_CREATE_checks): Update.
* xlat/fan_init_flags.in (FAN_ENABLE_AUDIT): New constant, introduced
by Linux commit v4.15-rc1~130^2^2~11.
(FAN_REPORT_TID): New constant, introduced by Linux commit
v4.20-rc1~75^2~2.
* NEWS: Mention this.
* tests/fanotify_init.c (main): Update expected output.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
As the former allows controlling presence of xlat definitions
during the inclusion and not header generation.
* xlat/loop_cmds.in: Remove #stop.
* loop.c: Wrap "xlat/loop_cmds.h" inclusion in XLAT_MACROS_ONLY.
* tests/ioctl_loop.c: Likewise.
We do our best to keep copyright headers up to date, yet
git history provides better information on this subject
and is more accurate than copyright headers.
* quota.c (print_qcmd): New function.
(SYS_FUNC(quotactl)): Use it to print the quotactl command.
* tests/quotactl.c (print_dqinfo, print_dqfmt): Handle XLAT_RAW
and XLAT_VERBOSE.
(QUOTA_STR, QUOTA_ID_STR, QUOTA_STR_INVALID): New macros.
(gen_quotacmd, gen_quotaid): New functions.
(main): Use them.
* tests/quotactl-Xabbrev.c: New file.
* tests/quotactl-Xraw.c: Likewise.
* tests/quotactl-Xverbose.c: Likewise.
* tests/gen_tests.in (quotactl-Xabbrev, quotactl-Xraw,
quotactl-Xverbose): New tests.
* tests/pure_executables.list: Add quotactl-Xabbrev, quotactl-Xraw,
and quotactl-Xverbose.
* tests/.gitignore: Likewise.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
* strace.c (terminate): Terminate itself if interrupted by a signal.
* NEWS: Mention this change.
* tests/detach-running.test: Check it.
* tests/detach-sleeping.test: Likewise.
* tests/detach-stopped.test: Likewise.
* net.c (print_get_error): New function decoding error
number returned as option value for SO_ERROR option.
(print_getsockopt) <case SO_ERROR>: Call print_get_error.
* tests/so_error.c: New test.
* tests/gen_tests.in (so_error): Likewise.
* tests/pure_executables.list: Add so_error.
* tests/.gitignore: Likewise.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* defs.h (audit_arch): New prototype.
* process.c: Include "ptrace_syscall_info.h".
(SYS_FUNC(ptrace)) <PTRACE_GET_SYSCALL_INFO>: Call
print_ptrace_syscall_info on exiting syscall.
* ptrace_syscall_info.h (print_ptrace_syscall_info): New prototype.
* ptrace_syscall_info.c: Include "print_fields.h" and
"xlat/ptrace_syscall_info_op.h".
(print_ptrace_syscall_info): New function.
* xlat/ptrace_syscall_info_op.in: New file.
* tests/ptrace_syscall_info.c: New file.
* tests/gen_tests.in (ptrace_syscall_info): New test.
* tests/pure_executables.list: Add ptrace_syscall_info.
* tests/.gitignore: Likewise.
Number 0 is not a valid signal number, and SIG_0 is not a valid
description for a signal.
* linux/signalent.h: Replace SIG_0 with 0.
* linux/alpha/signalent.h: Likewise.
* linux/hppa/signalent.h: Likewise.
* linux/mips/signalent.h: Likewise.
* linux/sparc/signalent.h: Likewise.
* filter_qualify.c (sigstr_to_uint): Start iterations with number 1.
* tests/fcntl-common.c (test_fcntl_others): Update expected output.
* tests/kill.c (main): Likewise.
* tests/ptrace.c (test_peeksiginfo): Likewise.
* tests/s390_runtime_instr.c (main): Likewise.
When the first exec fails, strace used to print the trace of the child
process till its end, producing a lot of confusing output.
Enhance the diagnostics by hiding irrelevant parts of the trace.
* defs.h (TCB_CHECK_EXEC_SYSCALL): New macro. Change values of TCB_*
macros listed after TCB_CHECK_EXEC_SYSCALL.
(check_exec_syscall): New macro.
* strace.c (dispatch_event) <TE_STOP_BEFORE_EXECVE>: Clear
TCB_CHECK_EXEC_SYSCALL flag.
* syscall.c (syscall_entering_trace): Do not clear TCB_HIDE_LOG when
TCB_CHECK_EXEC_SYSCALL is set, set TCB_CHECK_EXEC_SYSCALL along with
clearing TCB_HIDE_LOG.
(syscall_exiting_decode): Set TCB_HIDE_LOG if TCB_CHECK_EXEC_SYSCALL
is set.
* tests/first_exec_failure.test: New file.
* tests/Makefile.am (MISC_TESTS): Add first_exec_failure.test.
Closes: https://github.com/strace/strace/issues/88
* sockaddr.c (print_inet_addr): Handle var_name == NULL case in a more
structured way: use inet_addr("%s") form to print AF_INET addresses
in structureless contexts where no structure field name is available.
Likewise, use inet_pton(AF_INET6, "%s") that case.
* tests/nlattr_ifaddrmsg.c (main): Update expected output.
* tests/nlattr_ifla_af_spec.c (main): Likewise.
Complements: v4.19~76 "print_inet_addr: add support of invocations without field name"
Linux commit v4.19-rc2-5-g2ecefa0a15fd0ef88b9cd5d15ceb813008136431
changed the definition of struct keyctl_dh_params in an incompatible
way again. Workaround this issue by using designated initializers.
* tests/keyctl.c (main): Use designated initializers for
struct keyctl_dh_params.
On some architectures _IOC_NONE equals to 1, on others it is 0.
Change the way how ioctl direction flags are printed so that
_IOC_NONE is printed in symbolic form even if it is equal to 0.
* xlat/ioctl_dirs.in (_IOC_NONE): Move to the head of the list.
* tests/ioctl_inotify.c (main): Update expected output.
* tests/ioctl_loop. (main): Likewise.c
* tests/ioctl_perf.c (main): Likewise.
* tests/ioctl_scsi.c (main): Likewise.
Introduce a replacement for NLMSG_OK provided by <linux/netlink.h> since
that system macro contains signedness bugs that are not going to be fixed.
* netlink.h: Include <stdbool.h>.
(is_nlmsg_ok): New static inline function.
* socketutils.c (receive_responses): Use it instead of NLMSG_OK.
* tests/netlink_inet_diag.c (check_responses): Likewise.
* tests/netlink_netlink_diag.c (check_responses): Likewise.
* tests/netlink_unix_diag.c (check_responses): Likewise.
Closes: https://github.com/strace/strace/issues/79
* tests/execve.c (main): Explicitly mark q_envp variable as used
to workaround clang -Wunneeded-internal-declaration bug.
* tests/execveat.c (main): Likewise.
* tests/nsyscalls.c (main): Explicitly mark syscallent variable as used
to workaround clang -Wunneeded-internal-declaration bug.
Closes: https://github.com/strace/strace/issues/78
* xlat/af_packet_versions.in: New file.
* netlink_packet_diag.c: Include "xlat/af_packet_versions.h".
(decode_packet_diag_req): sdiag_protocol shouldn't be decoded as a protocol,
currently it should be set to 0.
(decode_packet_diag_info): Decode pdi_version field using af_packet_versions
xlat; decode pdi_index field as an interface index.
(packet_diag_msg_nla_decoders) <PACKET_DIAG_UID>: Decode using
decode_nla_uid.
(decode_packet_diag_msg): Decode pdiag_num as an low-level protocol.
* tests/netlink_sock_diag.c: Update expected output.
* tests/nlattr_packet_diag_msg.c: Likewise.
