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* configure.ac: Make it recognize cris.
* process.c: Define ARG_xxx constants for cris.
(change_syscall): Add support for cris.
(struct_user_offsets): Add cris-specific data.
* signal.c (sys_sigreturn): Add support for cris.
* syscall.c (get_scno): Add support for cris.
(syscall_fixup): Add support for cris.
(get_error): Add support for cris.
(syscall_enter): Add support for cris.
(force_result): While at it, fix cpp directives indentation.
* util.c (printcall): Add support for cris.
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.
looks insane.
* strace.c (alloc_tcb): Clear *all* fields in reused tcb.
(main): Query and remember uname() info on startup.
(handle_stopped_tcbs): Do not use PTRACE_SETOPTIONS on Linux < 2.6.29.
(printleader): Correct printing of "<unavailable>" markers.
event, we do not have any viable way to continue. No wonder most
places where that is detected have FIXMEs.
It's way simpler to treat as fatal failure, and handle it inside
tcb table expansion finctions.
Second cleanup: tidy up haphazard locations of a few externs.
* defs.h: Change return type of expand_tcbtab() to void.
Declare change_syscall().
* process.c: Change all callsites of alloctcb(), alloc_tcb() and
fork_tcb(), removing now-redundant error checks.
(fork_tcb): Change return type to void - it can't fail now.
* strace.c: Move extern declarations out of function bodies.
Change all callsites of alloctcb(), alloc_tcb() and
fork_tcb(), removing now-redundant error checks.
(expand_tcbtab): Change return type to void - it can't fail now.
On failure to expand, print a message, clean up, and exit.
(alloc_tcb): On failure to expand, print a message, clean up, and exit.
* util.c (setbpt): Remove extern declaration from function body.
* strace.c (collect_stopped_tcbs): Stop reversing list of stopped
tcp's. I'm not totally convinced it is crucial, but this is surely
fits the concept of "least surprise".
Do not collect TCB_SUSPENDED tcp's (this is closer to how
it was before).
(handle_stopped_tcbs): Remove the code to reject TCB_SUSPENDED tcp's,
it's done earlier now. In an unobvious way, this was causing
SIGSTOPs from freshly attached children to be misinterpreted.
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.
Trace even VFORK on -f on all the platforms.
* strace.1 <-f>: Describe Linux catches new children immediately.
<-F>: Make the option obsolete. Move the SunOS VFORK comment to the
`-f' option description.
* defs.h (followvfork): Declaration removed.
* strace.c (followvfork): Variable removed.
(main) <-F>: Merge with the `-f' option.
(trace): Make !FOLLOWVFORK unconditional.
* process.c (internal_fork): Make !FOLLOWVFORK unconditional.
* process.c [LINUX] (futexops): Add many new values.
[LINUX] (futexwakeops, futexwakecmps): New tables.
[LINUX] (sys_futex): Use them.
From Ulrich Drepper <drepper@redhat.com>.
Fixes RH#241467.
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.
Fix race conditions in tcb allocation.
* process.c (fork_tcb): Return error code as documented. Do not
print "tcb table full" error message.
[USE_PROCFS] (internal_fork): Do not print "tcb table full"
error message.
[SYS_clone || SYS_clone2] (internal_clone, internal_fork): Call
fork_tcb() before alloctcb(). Do not print "tcb table full"
error message.
* strace.c (main): Do not print "tcb table full" error message.
(expand_tcbtab): Print error message in case of memory allocation
failure.
(alloctcb): Print error message when tcb table is full.
(trace): Expand tcb table if necessary prior to allocating
entry there. Do not print "tcb table full" error message.
Fixes RH#180293.
* process.c (struct_user_offsets) [X86_64]: Reorder elements so
matching works right.
Fixes RH#159787.
* defs.h (struct sysent): New member `native_scno'.
(known_scno): Declare new function.
* linux/syscallent.h: Add new final field to interesting syscalls.
* syscall.c (known_scno): New function.
(dumpio, internal_syscall, syscall_fixup, trace_syscall): Use it.
* process.c (internal_fork, internal_exit): Likewise.
[IA64] (ARG_STACKSIZE, ARG_PTID, ARG_CTID, ARG_TLS): Likewise.
* strace.c (proc_open): Likewise.
* util.c [LINUX] (setbpt): Likewise.
* linux/syscall.h: Remove [!defined(X86_64)] from conditional
for defining SYS_socket_subcall et al.
* linux/syscallent.h: Likewise for #error check.
* syscall.c (trace_syscall): Likewise for SYS_{socketcall,ipc} cases.
Fixes RH#158934.
Deal with memory management issues.
* defs.h (tprint_iov): Update prototype.
* desc.c (sys_epoll_wait) [HAVE_SYS_EPOLL_H]: Do not allocate
epoll_event array of arbitrary size on the stack, to avoid
stack overflow.
* file.c (print_xattr_val): Check for integer overflow during
malloc size calculation, to avoid heap corruption.
* io.c (tprint_iov) [HAVE_SYS_UIO_H]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
Change iovec array handling to avoid heap memory allocation.
* mem.c (get_nodes) [LINUX]: Check for integer overflow during
size calculation and do not allocate array of arbitrary size on
the stack, to avoid stack overflow.
* net.c (printcmsghdr) [HAVE_SENDMSG]: Do not allocate array of
arbitrary size on the stack, to avoid stack overflow. Do not
trust cmsg.cmsg_len to avoid read beyond the end of allocated
object.
(printmsghdr) [HAVE_SENDMSG]: Update tprint_iov() usage.
* process.c (sys_setgroups): Check for integer overflow during
malloc size calculation, to avoid heap corruption. Change gid_t
array handling to avoid heap memory allocation.
(sys_getgroups): Likewise.
(sys_setgroups32) [LINUX]: Likewise.
(sys_getgroups32) [LINUX]: Likewise.
* stream.c (sys_poll) [HAVE_SYS_POLL_H]: Check for integer
overflow during malloc size calculation, to avoid heap corruption.
Change pollfd array handling to avoid heap memory allocation.
* system.c (sys_sysctl) [LINUX]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
* util.c (dumpiov) [HAVE_SYS_UIO_H]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
Fixes RH#159196.
* process.c [LINUX] [X86_64] (sys_arch_prctl): New function.
* linux/syscall.h: Declare it.
* linux/x86_64/syscallent.h: Use it.
Part of RH#142667.
* process.c (sys_sched_setscheduler): Use %#lx format for bad pointer.
(sys_sched_getparam, sys_sched_setparam): Likewise.
Part of RH#142667.
