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* xlat/gen.sh (gen_header): If the name of constant is specified with a
value, generate a default definition for the constant using this value.
* xlat/timerfdflags.in: Use extended syntax.
* Makefile.am (strace_SOURCES): Add caps0.h and caps1.h.
* caps0.h: New file.
* caps1.h: New file.
* capability.c: Remove CAP_* definitions, include "caps0.h"
and "caps1.h" instead.
Include "xlat/cap_mask0.h" instead of "xlat/capabilities.h".
Include "xlat/cap_mask1.h" instead of "xlat/capabilities1.h".
(print_cap_bits): Update callers.
* xlat/capabilities.in: Rename to xlat/cap_mask0.in.
* xlat/capabilities1.in: Rename to xlat/cap_mask1.in.
* syscall.c (print_pc): Choose instruction pointer format depending
on current_wordsize, not the size of long integer type.
* tests/pc.c: New file.
* tests/pc.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add pc.
(TESTS): Add pc.test.
* tests/.gitignore: Add pc.
* linux/mips/arch_regs.h (struct mips_regs): New structure.
(mips_REG_*): New macros.
* signal.c (sys_sigreturn) [MIPS]: Use mips_REG_SP.
* syscall.c [MIPS] (struct mips_regs): New variable.
[MIPS] (ARCH_REGS_FOR_GETREGS): New macro.
(mips_a3, mips_r2): Remove.
(print_pc) [MIPS]: Use mips_REG_EPC.
(get_scno) [MIPS]: Use mips_REG_V0 and mips_REG_A3.
(get_syscall_args) [MIPS]: Use mips_REG_A[0-5].
(get_syscall_result) [MIPS]: Remove.
(get_error) [MIPS]: Use mips_REG_A3 and mips_REG_V0.
Some gcc versions complain about assigning long* to uint32_t* on i386.
* syscall.c [I386] (i386_esp_ptr): Change type from uint32_t* to long*.
* linux/i386/arch_regs.h (i386_esp_ptr): Likewise.
* linux/x86_64/arch_regs.h: Do not include "i386/arch_regs.h".
(i386_esp_ptr): New prototype.
As get_regs() is now guaranteed to set get_regs_error,
there is no need to reset get_regs_error before get_regs() call.
* strace.c (trace): Call clear_regs() iff !WIFSTOPPED.
As get_regs() is now guaranteed to fetch registers when either
ARCH_REGS_FOR_GETREGSET or ARCH_REGS_FOR_GETREGS is defined, we can
safely replace all checks for architectures where these macros are defined
with a single check for these macros.
* syscall.c (get_syscall_result): Check for [ARCH_REGS_FOR_GETREGSET ||
ARCH_REGS_FOR_GETREGS]. Remove all checks for architectures where
nothing has to be done after get_regs().
* syscall.c [AARCH64, X86_64, X32] (ARCH_REGS_FOR_GETREGSET,
ARCH_IOVEC_FOR_GETREGSET): New macros.
(get_regset): Define iff ARCH_REGS_FOR_GETREGSET is defined; change
return type to long, return ptrace() return code instead of assigning it
to get_regs_error; do not list individual architectures, implement
constant and variable iovec cases depending on ARCH_IOVEC_FOR_GETREGSET.
(get_regs): Assign get_regset() return code to get_regs_error.
PTRACE_GETREGSET and PTRACE_GETREGS methods are equally good on arm and
i386 architectures, but PTRACE_GETREGSET with fallback to PTRACE_GETREGS
is a bit more costly, so choose the method that costs less.
This partially reverts commit v4.7-149-gfaa177e.
* syscall.c [ARM, I386] (ARCH_REGS_FOR_GETREGSET): Remove.
(get_regset) [ARM || I386]: Remove.
(get_regs) [ARM || I386]: Use PTRACE_GETREGS unconditionally.
* regs.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* linux/arch_regs.h: New file.
* linux/alpha/arch_regs.h: Likewise.
* linux/arm/arch_regs.h: Likewise.
* linux/hppa/arch_regs.h: Likewise.
* linux/i386/arch_regs.h: Likewise.
* linux/ia64/arch_regs.h: Likewise.
* linux/mips/arch_regs.h: Likewise.
* linux/powerpc/arch_regs.h: Likewise.
* linux/sh64/arch_regs.h: Likewise.
* linux/sparc/arch_regs.h: Likewise.
* linux/sparc64/arch_regs.h: Likewise.
* linux/tile/arch_regs.h: Likewise.
* linux/x86_64/arch_regs.h: Likewise.
* Makefile.am (EXTRA_DIST): Add them.
* defs.h: Remove definitions of PTRACE_*, REG_*, PT_*, U_REG_*,
and ARM_* macros.
Remove declarations of struct pt_regs variables.
[SPARC]: Do not include <asm/psr.h>.
[SPARC64]: Do not include <asm/psrcompat.h>.
* bjm.c: Do not include <sys/user.h>.
* process.c: Include "regs.h".
Do not include <sys/user.h> and <sys/reg.h>.
[IA64]: Do not include <asm/ptrace_offsets.h> and <asm/rse.h>.
* util.c: Likewise.
* syscall.c: Likewise.
[AARCH64]: Define struct arm_pt_regs and ARM_* macros.
[SPARC]: Include <asm/psr.h>.
[SPARC64]: Include <asm/psrcompat.h>.
* signal.c: Include "regs.h".
Do not include <sys/user.h> and <sys/reg.h>.
[IA64]: Do not include <asm/ptrace_offsets.h>.
* strace.c [IA64]: Do not include <asm/ptrace_offsets.h>.
* xlat/ptrace_events.in: New file.
* wait.c: Include "xlat/ptrace_events.h".
(printstatus): In case of WIFSTOPPED, print 0x80 flag separately from
the stop signal name.
[WIFCONTINUED]: Add WIFCONTINUED support.
Decode PTRACE_EVENT_* events.
The Linux kernel supports two different versions of the SG_IO API,
namely v3 and v4. This patch adds support for version 4 of this API.
At least the sg3_utils package supports version 4 of this API. Version
4 of this API is used if /dev/bsg/H:C:I:L is used as device name.
This patch has been tested by inspecting the output of the following
commands:
modprobe scsi_debug dev_size_mb=16 delay=0
dev=$(lsscsi | sed -n '/ scsi_debug /s,^[^/]*,,p')
./strace -eioctl -s256 sg_inq $dev
echo 'Test XDWRITEREAD(10)'
bsg=/dev/bsg/$(lsscsi | sed -n '/ scsi_debug /s,^\[\([^]]\+\)\].*,\1,p')
dd if=/dev/zero bs=512 count=1 |
./strace -eioctl -s256 sg_raw -s 512 -r 1024 $bsg 53 00 00 00 00 01 00 00 01 00
* configure.ac (AC_CHECK_HEADERS): Add linux/bsg.h.
* xlat/bsg_protocol.in: New file.
* xlat/bsg_subprotocol.in: Likewise.
* scsi.c: Include them and <linux/bsg.h>.
(print_sg_io_v3_req, print_sg_io_v3_res, print_sg_io_v4_req,
print_sg_io_v4_res): New functions.
(print_sg_io_req, print_sg_io_res): Use them.
(scsi_ioctl): Update callers.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* scsi.c (print_sg_io_req, print_sg_io_res): Add support for decoding
iovecs passed via the SG I/O v3 interface. Decode the "data in" and
"data out" buffers in hex instead of in ASCII.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* scsi.c (print_sg_io_res): Only print that part of the data in buffer
that has been initialized by the SCSI LLD driver.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Pass pointers to tracee's memory as integers instead of pointers.
* scsi.c (print_sg_io_buffer): Change second argument's type to
unsigned long.
(print_sg_io_req, print_sg_io_res): Update callers.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
This fixes the bug introduced by commit v4.9-250-ga0a4909.
* net.c (print_setsockopt): Separate SOL_IP case from SOL_PACKET.
Reported-by: Ben Noordhuis <info@bnoordhuis.nl>
If PTRACE_O_TRACEEXEC option is enabled, then post-execve SIGTRAPs are
suppressed and we can safely skip -ENOSYS heuristics. This partially
reverts commits v4.9-258-g8e398b6 and v4.9-261-gd70c41d.
* syscall.c (syscall_fixup_on_sysenter): Skip if PTRACE_O_TRACEEXEC
flag is set in ptrace_setoptions. Remove all SECCOMP_RET_ERRNO
workarounds as they are not needed when PTRACE_O_TRACEEXEC is not
supported by the kernel.
The process stared by strace can exit/terminate only once. When this
happens, forget its pid, so that any other event or action related to a
process with the same pid as the pid of that first process would not be
confused with that first process.
* strace.c (print_signalled, print_exited): Clear strace_child when it
equals to the given pid.
* strace.c (maybe_allocate_tcb): If detach_on_execve is set, do not warn
about !WIFSTOPPED process with pid == strace_child.
* tests/bexecve.test: New test.
* tests/Makefile.am (TESTS): Add it.
This change moves the main loop back to main() and splits trace()
into several functions. There are no algorithmic changes.
* strace.c (print_debug_info, maybe_allocate_tcb, maybe_switch_tcbs,
print_signalled, print_exited, print_stopped, startup_tcb): New
functions.
(trace) Use them. Move the main loop ...
(main): ... here.
* signal.c (printsiginfo): Make the first argument a pointer to a const type.
* defs.h (printsiginfo): Likewise.
(printsiginfo, printsiginfo_at): Always define these prototypes.
* configure.ac (AC_CHECK_TYPES): Remove siginfo_t, as HAVE_SIGINFO_T
is no longer used.
Thanks to SECCOMP_RET_DATA == 0xffff, abnormally large errno
values could be easily seen when a seccomp filter is used, e.g.
BPF_STMT(BPF_RET, SECCOMP_RET_ERRNO | SECCOMP_RET_DATA)
* syscall.c (is_negated_errno): Allow errno values as large as 0xffff.
This is required to process SECCOMP_RET_ERRNO filtered syscalls on
systems where linux kernel does not change the syscall number to -1.
* syscall.c (is_negated_errno): Move before syscall_fixup_on_sysenter.
(syscall_fixup_on_sysenter) [I386 || X32 || X86_64] : Use it to check
AX register.
Use the same function name on all architectures.
* syscall.c [X32] (is_negated_errno_x32): Rename to is_negated_errno.
(get_error) [X32]: Update callers.
Syscall number -1 might be a side effect of SECCOMP_RET_ERRNO filtering.
* syscall.c (syscall_fixup_on_sysenter) [I386 || X32 || X86_64]:
Do not skip syscalls that have number -1.
This allows using both -e read=FD and -e write=FD at the same time
with the same FD.
Without this patch, the -e write=FD is ignored if -e read=FD is used
at the same time.
Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>
The AC_SIN6_SCOPE_ID autoconf macro that was able to define
HAVE_SIN6_SCOPE_ID_LINUX was removed by commit v4.4-98-g64f793a.
* net.c [HAVE_SIN6_SCOPE_ID_LINUX]: Remove.
