MFC @ r241285

IFC @ r242684

Sync from head

- Make truss thread-aware.

Approved by: kib (mentor)
MFC after: 2 weeks

- Fix detaching under some circumstances.

When truss is detaching from very active process it is possible to
hang on waitpid(2) in restore_proc() forever, because
ptrace(PT_SYSCALL) must be ca

- Fix detaching under some circumstances.

When truss is detaching from very active process it is possible to
hang on waitpid(2) in restore_proc() forever, because
ptrace(PT_SYSCALL) must be called before detaching, to allow the
debugging process to continue execution. Also when truss called with
'-c' argument, it does not print anything after detach, because it
immediately exits from restore_proc().

To fix these two problems make detaching deferred, but then it is
impossible to detach from a process which does not do any system call.
To fix this issue use sigaction(2) instead of signal(3) to disable
SA_RESTART flag for waitpid(2) that makes it non-restartable. Remove
global variable child_pid, because now detaching is handled in context
where child's pid is known.

Reported by: mjg
Tested by: mjg, swills
Approved by: kib (mentor)
MFC after: 2 weeks

show more ...

- Remove unused variables.
- Remove redundant return after err(3) call.

Approved by: kib (mentor)

Merge head r233826 through r240095.

- Style(9) cleanup.

Approved by: kib (mentor)

- Use pid_t type instead of just int.

Approved by: kib (mentor)

IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

Use explicit information from the kernel to detect the traps due to
syscall entry and leave.

Based on submision by: Dan Nelson <dnelson allantgroup com>
MFC after: 1 month

Properly check for errors from waitpid().

Submitted by: gcooper
MFC after: 1 week

Sync: merge r214077 through r214219 from ^/head.

Remove setpgid() call before executing child process.

Using a separate process group here is bad, since (for example) job
control in the TTY layer prevents interaction with the TTY, causing the
chil

Remove setpgid() call before executing child process.

Using a separate process group here is bad, since (for example) job
control in the TTY layer prevents interaction with the TTY, causing the
child process to hang.

Mentioned on: current@
MFC after: 2 weeks

show more ...

Update to current version of head.

Fix copyright spelling.

PR: 139825
Submitted by: Ruslan Mahmatkhanov

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

Merge from head

Merge from HEAD

Correct a bug where pr_data should have been assigned.

MFp4: Bugfixes for truss(1):

- Fix logic handling execve(). We will not be able to
obtain information otherwise.
- truss coredump [1].
- truss does not work against itself [2].

PR: bin/5897

MFp4: Bugfixes for truss(1):

- Fix logic handling execve(). We will not be able to
obtain information otherwise.
- truss coredump [1].
- truss does not work against itself [2].

PR: bin/58970 [1], bin/45193 [2]
Submitted by: Howard Su
Approved by: re (kensmith)

show more ...

Make use of ptrace(2) instead of procfs in truss(1), eliminating
yet another need of an available /proc/ mount.

Tested with: make universe
Submitted by: howardsu
Reviewed by: alfred

- Add decoding of kse_release, kevent, sigprocmask, unmount, socket, getrusage,
rename, __getcwd, shutdown, getrlimit, setrlimit, _umtx_lock, _umtx_unlock,
pathconf, truncate, ftruncate, kill

-

- Add decoding of kse_release, kevent, sigprocmask, unmount, socket, getrusage,
rename, __getcwd, shutdown, getrlimit, setrlimit, _umtx_lock, _umtx_unlock,
pathconf, truncate, ftruncate, kill

- Decode more arguments of open, mprot, *stat, and fcntl.

- Convert all constant-macro and bitfield decoding to lookup tables; much
cleaner than previous code.

- Print the timestamp of process exit and signal reception when -d or -D are in
use

- Try six times with 1/2 second delay to debug the child

PR: bin/52190 (updated)
Submitted by: Dan Nelson <dnelson@allantgroup.com>
Approved by: alfred

show more ...