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* defs.h (struct mmap_cache_t): Add major and minor fields.
* mmap_cache.c (build_mmap_cache): Record device major and minor numbers.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
mmap_cache was enabled indirectly via unwind feature. As now mmap_cache
can be used by other part of strace, a way to enable mmap_cache directly
is needed.
* defs.h (mmap_cache_enable, mmap_cache_is_enabled): New function
prototypes.
* mmap_cache.c (use_mmap_cache): New file local variable.
(mmap_cache_enable, mmap_cache_is_enabled): New functions.
* syscall.c (syscall_exiting_decode): Use mmap_cache_is_enabled()
instead of stack_trace_enabled.
* unwind.c (unwind_init): Invoke mmap_cache_enable.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
mmap_cache_delete function used to be called by destructor of unwind
related code. Now that other parts can use mmap cache,
mmap_cache_delete is called separately from unwind_tcb_fin.
* unwind.c (unwind_tcb_fin): Move mmap_cache_delete invocation ...
* strace.c (droptcb): ... here.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
To make mmap_cache reusable, records protection bits of mmap entries.
* defs.h (mmap_cache_protection): New enum.
* mmap_cache.c (build_mmpa_cache): Don't ignore entries that are not
executable, just record the protection bits here.
* unwind.c (print_stack_frame): Ignore entries that are not executable.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
print_stack_frame function in unwind.c searches a mmap entry in mmap
cache. The found entry is then used for unwinding. However, a function
searching for a mmap entry may be useful for other purposes than
unwinding.
This change re-factors the function; code for searching an entry is
now defined as a stand-alone function named mmap_cache_search.
* defs.h (mmap_cache_search): New function prototype.
print_stack_frame.
* mmap_cached.c (mmap_cache_search): New function derived from
print_stack_frame.
* unwind.c (print_stack_frame): Use it.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
For making mmap cache code reusable from other areas in strace than
unwind, mmap cache related code and unwind related code should be
separated.
This change moves the most of mmap cache code from unwind.c
to mmap_cache.c, a new file.
* unwind.c: Move mmap_cache implementation ...
* mmap_cache.c: ... to this new file.
* Makefile.am (strace_SOURCES): add mmap_cache.c.
* defs.h (struct tcb): Move mmap_cache, mmap_cache_size, and
mmap_cache_generation fields out of [USE_LIBUNWIND] condition.
(mmap_cache_invalidate, mmap_cache_delete,
mmap_cache_rebuild_if_invalid): New function prototypes.
(struct mmap_cache_t, enum mmap_cache_rebuild_result): Move from
unwind.c.
* syscall.c (syscall_exiting_decode): Replace unwind_cache_invalidate
with mmap_cache_invalidate.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
For making mmap cache code reusable from other areas in strace
than unwind, mmap cache related code and unwind related code
should be separated.
This change is one of the steps for the separation. It moves
unw_flush_cache function call from the core of mmap cache code
to upper level code.
* unwind.c (mmap_cache_rebuild_result): New enum.
(rebuild_cache_if_invalid): Return MMAP_CACHE_REBUILD_* instead of
a bool value.
(build_mmap_cache): Don't call unw_flush_cache here.
(unwind_print_stacktrace, unwind_capture_stacktrace): Call
unw_flush_cache here instead.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Versioned dependency on debhelper is not updated for backwards
compatibility.
* debian/changelog.in: Fix ancient changelog entries.
* debian/control (Build-Depends): Add dependency on libbluetooth-dev.
(Standards-Version): Update to 4.1.3.
(Vcs-Git, Vcs-Browser): Move from alioth to salsa.d.o.
(strace, strace-udeb) <Architecture>: Change to linux-any.
(strace64, strace-udeb) <Priority>: Change to optional.
* debian/rules: Use /usr/share/dpkg/architecture.mk instead of manually
setting build variables.
(configure): New target.
(build/Makefile, build-udeb/Makefile, build64/Makefile): Depend on it.
(binary-arch): Use build64/strace.1 for strace64 subpackage.
* debian/strace.manpages: Add build/ prefix.
* debian/strace64.manpages: Add build64/ prefix.
* m4/mpers.m4 (st_MPERS_STRUCT_STAT): Use mpers_name instead of
MPERS_NAME in comments generated by AC_DEFINE.
Fixes: v4.14~169 ("mpers.m4: check for struct stat64, struct stat, and their members")
As <inttypes.h> is included in files generated by mpers.awk to obtain
definitions of uintNN_t types provided by <stdint.h>, replace the former
header with the latter.
* mpers.awk: Use <stdint.h> instead of <inttypes.h>.
* mpers_test.sh: Update expected output.
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")
https://sourceforge.net/p/strace/code/ is defunct: it doesn't accept
new commits for too long.
Likewise, https://sourceforge.net/projects/strace/files/ doesn't accept
new files for too long.
* README.md: Remove sourceforge.net URL.
* debian/copyright: Replace the sourceforge.net based strace project URL
with a github based one.
* strace.spec.in (Source): Likewise.
When built with -O0, gcc (rightfully) generates function prologue, which
results in writing %rbp to the stack, causing premature KVM_EXIT_MMIO.
It could be possible to avoid such problems by "naked" attribute but,
unfortunately, the latter is not available on x86 with older GCC.
A trick suggested in [1] is used instead: assembly is moved
to the global scope.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50242#c3
* tests/ioctl_kvm_run.c (code): Remove function.
Add globally scoped __asm__ with the function code and its size.
(code, code_size): New extern symbols declarations.
(run_kvm): Remove code_size definition and initialization.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
As it has proven itself useful.
* tests/ioctl_kvm_run.c (run_kvm) <case KVM_EXIT_MMIO:>: Fail
on unexpected KVM_EXIT_MMIO, providing relevant diagnostics.
Recent glibc (since version 2.26) uses accept4 syscall for implementing
accept call on sparc. Unfortunately, it's impossible to simply fall
back on raw syscall as it had not been wired up until linux commit
v4.4-rc8~4^2~1.
* tests/accept_compat.h: New file.
* tests/Makefile.am (EXTRA_DIST): Add it.
* tests/net-y-unix.c: Include accept_compat.h, use do_accept()
instead of accept() calls.
* tests/net-yy-inet.c: Likewise.
* tests/net-yy-unix.c: Likewise.
* tests/net.expected: Allow accept4.
* xlat/pkey_access.in (PKEY_DISABLE_EXECUTE): New constant introduced
by linux kernel commit v4.16-rc1~93^2~85.
* tests/pkey_alloc.c: Update expected output.
* NEWS: Mention it.
* linux/powerpc/syscallent.h [384..386]: Add pkey_alloc,
pkey_free, and pkey_mprotect syscalls introduced by linux kernel
commits v4.16-rc1~93^2~70 and v4.16-rc1~93^2~69, respectively.
* linux/powerpc64/syscallent.h: Likewise.
* NEWS: Mention it.
There is no compat support in strace and there are no systems
within reach that would allow to test it.
* linux/ia64/arch_regs.c (IA64_PSR_IS, ia64_ia32mode): Remove.
* linux/ia64/get_error.c (get_error): Remove ia64_ia32mode branch.
* linux/ia64/get_scno.c (arch_get_scno): Likewise.
* linux/ia64/get_syscall_args.c (get_syscall_args): Likewise.
* linux/ia64/set_error.c (arch_set_error, arch_set_success): Likewise.
* linux/ia64/set_scno.c (arch_set_scno): Likewise.
In order to have the same view as tracee has, with regards to
"never fail" syscalls.
* syscall.c (tamper_with_syscall_exiting): Call get_error after the
return value tampering to re-initialise u_rval and u_error fields
of struct tcb.
Include "ptrace.h" before any header that can include <signal.h>
because on some architectures the latter may include <asm/sigcontext.h>
which in turn may include <asm/ptrace.h> with potentially devastating
effect on <sys/ptrace.h>.
* process.c: Include "ptrace.h" before "regs.h".
* rt_sigframe.c: Likewise.
* sigreturn.c: Include "ptrace.h" before "nsig.h".
* syscall.c: Likewise.
* wait.c: Include "ptrace.h" before <sys/wait.h>.
* strace.c: Include "ptrace.h" before <signal.h>.
* tests/ptrace.c: Likewise.
* tests/test_ucopy.c: Include <sys/ptrace.h> before <signal.h>.
As it will be used elsewhere.
* basic_filters.c (scno_by_name): New function.
(qualify_syscall_name): Use it.
* defs.h (scno_by_name): New declaration.
* defs.h (struct inject_data): Change type of rval field to
kernel_ulong_t.
* filter_qualify.c (parse_inject_token): Use string_to_kulong instead of
string_to_uint for rval parsing. Warn if retval is clipped in compat
personality.
And add support for reading of various types.
* string_to_uint.c (string_to_uint_ex): Change to work with long long.
(string_to_uint): Move it...
* string_to_uint.h (string_to_uint): ...here.
(string_to_uint_upto): Accept long long as max_val, return long long.
(string_to_ulong, string_to_kulong, string_to_ulonglong): New functions,
for completeness.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
