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which do proper error-checking and set tcp->ptrace_errno.
In some cases, missing error checking is added.
Error handling for trace_syscall() failures and other cases
where tcp->ptrace_errno is nonzero is cleaned up a bit
and made more verbose if we see error other than ESRC.
Some comments are added or expanded.
* defs.h: Declare ptrace_cmds[]. Modify do_ptrace
declaration (last parameter is long, not void *).
* process.c: Make ptrace_cmds[] non-static.
(change_syscall): Use do_ptrace() instead of bare ptrace().
* signal.c: Use do_ptrace() instead of bare ptrace().
* strace.c: Update trace_syscall() failure handling.
* syscall.c: Use do_ptrace() instead of bare ptrace().
* util.c: Use do_ptrace() instead of bare ptrace().
Update do_ptrace() wrapper.
(str_PTRACE_xxx): New function - helper returning "PTRACE_xxx".
(do_ptrace_peekdata): New function - wrapper for PTRACE_PEEKDATA
(do_ptrace5): New function - wrapper for 5-argument ptrace calls.
There was code which was trying to continue tracing
even if table expansion fails. Now we treat it as fatal
failure, so this code is removed by this change.
* defs.h: Delete TCB_FOLLOWFORK constant.
* process.c: Delete fork_tcb() and all calls of it.
* strace.c (startup_attach): Remove usage of TCB_FOLLOWFORK.
* syscall.c: Indent preprocessor directives.
* strace.c (handle_stopped_tcbs): Discard all execve stops
and clear TCB_WAITEXECVE bit.
* syscall.c (get_scno): Add the code to not mistakenly
treat ptrace stop as execve stop (execve stops can be blocked
by traced program).
Fixes RH#477775 "strace hangs if the target process blocks SIGTRAP".
change which added better handling of processes suddenly
disappearing. Now we often do not finish last line
before exiting in those cases.
The only change affecting something other than output
is change in umovestr where we were calling
abort() on ptrace error.
* strace.c (trace): If trace_syscall() failed with ESRCH,
finish current output line with " <unfinished ...>".
(mp_ioctl): While we are at it, fix gross style mismatch
in this function definition. No code chages.
* syscall.c (trace_syscall): If decode fails on syscall exit,
finish current output line with "= ? <unavailable>".
* util.c (umoven): Do not complain if error is ESRCH.
(umovestr): Do not complain and do not abort() if error is ESRCH.
* defs.h: Remove unused tcp parameter from printtrailer().
* process.c: Adjust printtrailer() calls accordingly.
* strace.c: Adjust printtrailer() calls accordingly.
* syscall.c: Adjust printtrailer() calls accordingly.
It merely passes tcp pointer to upeek instead of pid.
This is needed if one wants to check or change
some tcp fields.
I have patches which require this. I can imagine someone else
eventually needing to look at tcp for completely orthogonal reasons.
* syscall.c (is_restart_error): New function.
* defs.h (is_restart_error): Declare it.
* linux/dummy.h (sys_nanosleep): Uncouple from sys_adjtime().
* time.c (sys_nanosleep): New function, based on is_restart_error().
Fix compiler warnings.
* signal.c (sys_signal): Cast to SIG_* to the matching type LONG.
* strace.c (trace): Variables PSR and PC are now signed.
* syscall.c (syscall_enter): Variable RBS_END is now signed long.
Remove/add the RBS_END casts appropriately.
* util.c [IA64] (arg_setup): Variable BSP is now signed long.
Remove/add the BSP casts appropriately.
<ia32>: Initialize *STATE.
* defs.h [ARM]: Define SUPPORTED_PERSONALITIES to 2.
* syscall.c (get_scno) [ARM]: Add support for architecture specific
syscalls.
* linux/arm/syscallent.h: Update network syscalls list.
* linux/arm/syscallent1.h: New file. Add new architecture specific
syscalls.
* linux/arm/errnoent1.h: New file.
* linux/arm/ioctlent1.h: New file.
* linux/arm/signalent1.h: New file.
Fixes Debian#441000.
* syscall.c (internal_syscall): Change conditions for internal_exit,
internal_fork, internal_clone, internal_exec and internal_wait
calls from switching on known scno values to switching on known
sysent[tcp->scno].sys_func values.
Fixes RH#179740.
Show system call summary for each personality.
* syscall.c (countv): New call_counts pointers array.
(counts): Convert to macro wrapper around countv.
(call_summary_pers): New function.
(call_summary): Use it for each personality.
Fixes RH#192193.
Make several global variables static.
#ifdef definitions of rarely unused functions.
* defs.h (rflag, tflag, outfname): Remove.
* strace.c (iflag, interactive, pflag_seen, rflag, tflag,
outfname, username): Make static.
* desc.c (sys_getdtablesize): Define only for
ALPHA || FREEBSD || SUNOS4.
* file.c (sys_fchroot): Define only for SUNOS4 || SVR4.
(sys_mkfifo): Define only for FREEBSD.
* mem.c (sys_sbrk): Define only for FREEBSD || SUNOS4.
(sys_getpagesize): Define only for
ALPHA || FREEBSD || IA64 || SUNOS4 || SVR4.
* net.c (sys_so_socket): Define only for SVR4.
* process.c (sys_gethostid): Define only for
FREEBSD || SUNOS4 || SVR4.
(sys_gethostname): Define only for
ALPHA || FREEBSD || SUNOS4 || SVR4.
(sys_setpgrp): Define only for ALPHA || SUNOS4 || SVR4.
(sys_execv): Define only for SPARC || SPARC64 || SUNOS4.
* signal.c (sys_sigblock): Define only for FREEBSD || SUNOS4.
(sys_sighold, sys_sigwait): Define only for SVR4.
(sys_killpg): Define only for FREEBSD || SUNOS4.
* stream.c (sys_getmsg): Define only for
SPARC || SPARC64 || SUNOS4 || SVR4.
* syscall.c (sys_indir): Define only for SUNOS4.
* defs.h [LINUXSPARC] (PERSONALITY0_WORDSIZE, PERSONALITY1_WORDSIZE):
New macros.
[SPARC64] (PERSONALITY2_WORDSIZE): New macro.
[X86_64] (PERSONALITY0_WORDSIZE, PERSONALITY1_WORDSIZE): New macros.
* syscall.c (PERSONALITY0_WORDSIZE): New macro if undefined.
(personality_wordsize): New variable.
(decode_subcall): Use it for size of argument words.
Fixes RH#174354.
Implement qual_flags support for each personality.
* strace.c (main): Move qualify calls after set_personality call.
* syscall.c (qual_flags0): New variable..
[SUPPORTED_PERSONALITIES >= 2] (qual_flags1): New variable.
[SUPPORTED_PERSONALITIES >= 3] (qual_flags2): New variable.
(qual_flags): Change variable definition from array to pointer.
(set_personality): Initialize qual_flags variable.
(qualify_one): Add "pers" argument to specify personality.
[SUPPORTED_PERSONALITIES >= 2]: Set qual_flags1 if requested.
[SUPPORTED_PERSONALITIES >= 3]: Set qual_flags2 if requested.
(qual_syscall): Pass personality to qualify_one.
[SUPPORTED_PERSONALITIES >= 2]: Look for syscall also in sysent1
table.
[SUPPORTED_PERSONALITIES >= 3]: Look for syscall also in sysent2
table.
(qual_signal): Pass personality to qualify_one.
(qual_desc): Likewise.
(qualify): Use qualify_one instead of manual qual_flags
manipulations.
[SUPPORTED_PERSONALITIES >= 2]: Look for syscall also in sysent1
table.
[SUPPORTED_PERSONALITIES >= 3]: Look for syscall also in sysent2
table.
* defs.h: Update qual_flags declaration.
Fixes RH#173986.
* syscall.c (qual_signal): Check bounds for numeric signal names.
Fix parser of symbolic signal names.
Fix return code, as required by qualify() function.
* syscall.c (qual_desc): Check bounds for descriptor number.
* syscall.c (qual_syscall): Correct return code, to be consistent
with qualify() and other qual_* functions.
Fixes RH#143362.
* syscall.c (qual_options): Add const to defn.
Update all uses.
(call_count, error_count, tv_count): Variables removed.
(struct call_counts, counts): New type and variable.
Update all users of the old three to use the new array of structs.
(trace_syscall): Allocate counts on first use.
(sorted_count): Variable removed.
(call_summary): Allocate locally.
* process.c (internal_wait): Take second arg giving index of flags
argument.
* defs.h: Update prototype.
* syscall.c (internal_syscall): Update caller.
Also use internal_wait for SYS_waitid.
* process.c (sys_waitid): Define for [LINUX] as well.
Don't tweak TCB_SUSPENDED--internal_wait does that.
(waitid_types): Conditionalize use of nonstandard P_* macros.
* linux/sparc/syscallent.h: Sync with reality.
* linux/sparc/syscall.h (sys_sendfile64, sys_futex, sys_gettid,
sys_sched_setaffinity, sys_sched_getaffinity, sys_setxattr,
sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr,
sys_fgetxattr, sys_listxattr, sys_llistxattr, sys_flistxattr,
sys_removexattr, sys_lremovexattr, sys_fremovexattr,
sys_remap_file_pages, sys_readahead, sys_tgkill, sys_statfs64,
sys_fstatfs64, sys_clock_settime, sys_clock_gettime,
sys_clock_getres, sys_clock_nanosleep, sys_timer_create,
sys_timer_settime, sys_timer_gettime): New declarations.
* linux/sparc64/dummy2.h, linux/sparc64/syscallent2.h,
linux/sparc64/syscall.h, linux/sparc64/errnoent.h,
linux/sparc64/errnoent1.h, linux/sparc64/errnoent2.h,
linux/sparc64/ioctlent.h, linux/sparc64/ioctlent1.h,
linux/sparc64/ioctlent2.h, linux/sparc64/signalent.h,
linux/sparc64/signalent.h, linux/sparc64/signalent.h,
linux/sparc64/signalent1.h, linux/sparc64/signalent2.h,
linux/sparc64/syscall1.h, linux/sparc64/syscallent.h,
linux/sparc64/syscallent1.h: New files.
* defs.h (LINUXSPARC): Define also when SPARC64.
(LINUX && SPARC64): Set SUPPORTED_PERSONALITIES to 3.
Ignore SIGTRAP after execve by defining TCB_WAITEXECVE.
Define possibly missing __NR_exit_group. Declare getrval2.
* configure.ac (sparc64): New architecture case.
* config.h.in (SPARC64): New define.
* file.c (stat_sparc64): New structure.
(printstat_sparc64): New output routine for that.
(printstat): Call it, if personality is 2.
(printstat64): Likewise.
* util.c: Conditionalize ptrace defines on LINUXSPARC
not LINUX && SPARC.
(SPARC64 && LINUX): Define r_pc to r_tpc, and PTRACE_FOOREGS
to PTRACE_FOOREGS64 so that more sparc code can be shared
between 64-bit and 32-bit.
(_hack_syscall5): Correct trap number when SPARC64.
(PTRACE_WRITE{TEXT,DATA}): Add SPARC64 to ifdef guard.
(getpc): Handle SPARC64 && LINUX.
(printcall): Likewise.
(arg fetching/setting): Use same code for SPARC64 LINUX
as for SPARC.
(setbpt): Handle SPARC64 && LINUX.
(clearbpt): Likewise.
* signal.c: Conditionalize ptrace defines on SPARC and
SPARC64.
(SPARC64 && LINUX): Define r_pc to r_tpc, and PTRACE_FOOREGS
to PTRACE_FOOREGS64 so that more sparc code can be shared
between 64-bit and 32-bit.
(m_siginfo): Use same definition on SPARC64 as SPARC.
(sys_sigreturn): Handle LINUX && SPARC64.
* syscall.c: Conditionalize ptrace defines on SPARC and
SPARC64.
(SPARC64 && LINUX): Define r_pc to r_tpc, and PTRACE_FOOREGS
to PTRACE_FOOREGS64 so that more sparc code can be shared
between 64-bit and 32-bit.
(getscno): Use same static state on SPARC64 as SPARC,
and add SPARC64 handling.
(get_error): Handle LINUX && SPARC64.
(force_result): Likewise.
(syscall_enter): Likewise.
(trace_syscall): Handle sys_socketcall and sys_ipc on SPARC64
just like SPARC.
(getrval2): Handle LINUX && SPARC64.
* process.c: Conditionalize ptrace defines on SPARC and
SPARC64.
(SPARC64 && LINUX): Define r_pc to r_tpc, and PTRACE_FOOREGS
to PTRACE_FOOREGS64 so that more sparc code can be shared
between 64-bit and 32-bit.
(change_syscall): Handle LINUX && SPARC64.
(struct_user_offsets): Ifdef out those which do not exist
on SPARC64.
* net.c (sys_pipe): Handle LINUX && SPARC64.
* ioctl.c: Fix initializer typo for nioctlents2, was
nioctlents1 by accident.
* configure.ac: Check for `struct pt_all_user_regs'
and `struct ia64_fpreg' in <sys/ptrace.h>.
* util.c, process.c, syscall.c: Work around conflicts between
<sys/ptrace.h> and <linux/ptrace.h> for defining those types.
* defs.h [LINUX && IA64]: Declare getrval2 also on IA64.
* net.c (sys_pipe) [LINUX && IA64]: For IA64 use the two return values.
* syscall.c (getrval2) [LINUX && IA64]: Implement for IA64.
* process.c (internal_exit): For ia64, also recognize IA-32 252
as exit_group().
(change_syscall): For IA64, also support changing IA-32 syscalls.
* syscall.c (internal_syscall): For IA64, also recognize IA-32
syscall 252 (exit_group) as an internal_exit() syscall.
* util.c (SYS_fork): For IA64, define them to the IA-32 syscall
number.
(SYS_vfork): Likewise.
(arg_setup): For IA64 version, also support IA-32 syscalls.
(get_arg0): Likewise.
(get_arg1): Likewise.
(set_arg0): Likewise.
(set_arg1): Likewise.
* syscall.c (get_scno) [LINUX] [S390 || S390X]: Bail out of
instruction decoding branch if TCB_INSYSCALL is clear.
Reported by <jochen@penguin-breeder.org>.
Various fixes for SuperH [SH]:
* mem.c (sys_old_mmap): mmap() parameters passed in registers
* net.c (sys_pipe), syscall.c (getrval2): pipe() results returned
in registers
* process.c (change_syscall): Fixed register which holds system
call number
* util.c (arg0_offset, arg1_offset): provide definition
* Makefile.am: Added new files in linux/sh
* linux/sh/syscallent.h: New file.
* linux/sh/errnoent.h: New file.
* linux/sh/ioctlent.h: New file.
* linux/sh/signalent.h: New file.
FreeBSD rfork support changes from Russ Cox <rsc@plan9.bell-labs.com>:
* syscall.c (internal_syscall): Handle SYS_rfork with internal_fork.
* process.c (internal_fork) [SYS_rfork]: Bail if RFPROC flag not set.
* configure.ac: Match powerpc* (includes powerpc64), and don't match
ppc (never comes out of config.sub).
* process.c (sys_ptrace): Use #lx format for address argument.
[POWERPC]: Use sizeof(unsigned long) in place of 4 for multipliers.
* process.c [POWERPC]: Likewise.
* signal.c (sys_sigreturn) [POWERPC]: Likewise.
* syscall.c (get_scno) [POWERPC]: Likewise.
* util.c [POWERPC]: Likewise.
(printnum): Use long for NUM.
From Anton Blanchard <anton@samba.org>.
Support for new Linux 2.5 thread features.
* defs.h [LINUX]: Define __NR_exit_group if not defined.
(struct tcb): New members nclone_threads, nclone_detached,
and nclone_waiting.
(TCB_CLONE_DETACHED, TCB_CLONE_THREAD, TCB_GROUP_EXITING): New macros.
(waiting_parent): Macro removed.
(pid2tcb): Declare it.
* process.c (internal_clone) [TCB_CLONE_THREAD]: Reparent the new
child to our parent if we are a CLONE_THREAD child ourselves.
Maintain TCB_CLONE_THREAD and TCB_CLONE_DETACHED flags and counts.
(internal_wait) [TCB_CLONE_THREAD]: Factor out detached children when
determining if we have any. If TCB_CLONE_THREAD is set, check
parent's children instead of our own, and bump nclone_waiting count.
(internal_exit) [__NR_exit_group]: Set the TCB_GROUP_EXITING flag if
the syscall was exit_group.
* syscall.c (internal_syscall): Use internal_exit for exit_group.
* strace.c (pid2tcb): No longer static.
(alloctcb) [TCB_CLONE_THREAD]: Initialize new fields.
(droptcb) [TCB_CLONE_THREAD]: Maintain new fields.
If we have thread children, set TCB_EXITING and don't clear the TCB.
(resume) [TCB_CLONE_THREAD]: Decrement parent's nclone_waiting.
(detach) [TCB_CLONE_THREAD]: When calling resume, check all thread
children of our parent that might be waiting for us too.
[TCB_GROUP_EXITING] (handle_group_exit): New function.
(trace) [TCB_GROUP_EXITING]: Use that in place of detach or droptcb.
* syscall.c (qualify_one): New function.
(qual_options): Replace lookup field with qualify, update initializer.
(qualify): Update caller.
(qual_signal, qual_fault, qual_desc): Rewritten from lookup_*.
(qual_syscall): Rewritten lookup_syscall, match name more than once.
Fixes RH#70579, bites IA64 -efoo when foo exists on IA32.
* syscall.c (force_result): New function.
* process.c (internal_wait): Handle ECHILD exit from wait call with
WNOHANG flag set; force the return value to 0 in the inferior when it
has live children we are tracing.
* configure.in: Fix regular expressions.
* linux/syscall.h: Added missing braces in prototype of
sys_getdents64().
* file.c: Use '#ifdef LINUX' instead of '#ifdef linux'.
(struct fileflags): Made extern to inhibit compiation warnings.
(sys_getdents64): Merged LINUX and SVR4 part.
* syscall.c(get_scno): Split multiline string into two distinct
strings.
Another bunch of patches from John Hughes merged:
signal.c:
+ SVR4 printcontext(): sigset_t != sigset_t*
+ getcontext returns a value, so print on exit of syscall
+ add UC_FP to ucontext_flags for OS writers that can't spell
+ sys_signal(): special case SIG_{ERR,DFL,IGN}
+ decode_subcall(): only do subcall range checking when needed
bunch of UnixWare updates
aclocal.m4, acconfig.h, configure.in: add test for long long type
with development kernels
bjm.c: sys_query_module: check if malloc succeeds
system.c: sys_cap[gs]et(): check if malloc succeeds, only malloc once
linux/syscallent.h: updated for 2.3.99pre3
linux/alpha/syscallent.h: updated for 2.3.99pre3, add all osf syscalls
even though Linux doesn't implement them
syscall.c: add global variables for MIPS registers as well
syscall.c: move global variables to before get_scno since that uses them
util.c: oops, misspelled defined
process.c: fix ptrace calls in change_syscall
mem.c: decode sys_madvise
Merge patch from Topi Miettinen <Topi.Miettinen@nic.fi>
+ add support for quotactl, fdatasync, mlock, mlockall, munlockall & acct
+ small fix for RLIMIT_* and RUSAGE_BOTH
+ enhace support for capget and capset
test/.cvsignore: new file
defs.h: Up maximum number of traced processed to 64
strace.c: Disable some debugging code from davidm
implement setarg for more architectures
implement change_syscall
