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author | jhb <jhb@FreeBSD.org> | 2016-08-15 21:10:41 +0000 |
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committer | jhb <jhb@FreeBSD.org> | 2016-08-15 21:10:41 +0000 |
commit | ad523ae767350f96407db84085c792c544327aa6 (patch) | |
tree | facb8a599daa20c5e3f1febf1cf90e71f5a09c35 /bin | |
parent | 8cd2e8d56dfad9890a6bf525a9602adb01258c0f (diff) | |
download | FreeBSD-src-ad523ae767350f96407db84085c792c544327aa6.zip FreeBSD-src-ad523ae767350f96407db84085c792c544327aa6.tar.gz |
MFC 302900,302902,302921,303461,304009:
Add a mask of optional ptrace() events.
302900:
Add a test for user signal delivery.
This test verifies we get the correct ptrace event details when a signal
is posted to a traced process from userland.
302902:
Add a mask of optional ptrace() events.
ptrace() now stores a mask of optional events in p_ptevents. Currently
this mask is a single integer, but it can be expanded into an array of
integers in the future.
Two new ptrace requests can be used to manipulate the event mask:
PT_GET_EVENT_MASK fetches the current event mask and PT_SET_EVENT_MASK
sets the current event mask.
The current set of events include:
- PTRACE_EXEC: trace calls to execve().
- PTRACE_SCE: trace system call entries.
- PTRACE_SCX: trace syscam call exits.
- PTRACE_FORK: trace forks and auto-attach to new child processes.
- PTRACE_LWP: trace LWP events.
The S_PT_SCX and S_PT_SCE events in the procfs p_stops flags have
been replaced by PTRACE_SCE and PTRACE_SCX. PTRACE_FORK replaces
P_FOLLOW_FORK and PTRACE_LWP replaces P2_LWP_EVENTS.
The PT_FOLLOW_FORK and PT_LWP_EVENTS ptrace requests remain for
compatibility but now simply toggle corresponding flags in the
event mask.
While here, document that PT_SYSCALL, PT_TO_SCE, and PT_TO_SCX both
modify the event mask and continue the traced process.
302921:
Rename PTRACE_SYSCALL to LINUX_PTRACE_SYSCALL.
303461:
Note that not all optional ptrace events use SIGTRAP.
New child processes attached due to PTRACE_FORK use SIGSTOP instead of
SIGTRAP. All other ptrace events use SIGTRAP.
304009:
Remove description of P_FOLLOWFORK as this flag was removed.
Diffstat (limited to 'bin')
-rw-r--r-- | bin/ps/ps.1 | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/bin/ps/ps.1 b/bin/ps/ps.1 index 17bfa41..0ff3268 100644 --- a/bin/ps/ps.1 +++ b/bin/ps/ps.1 @@ -29,7 +29,7 @@ .\" @(#)ps.1 8.3 (Berkeley) 4/18/94 .\" $FreeBSD$ .\" -.Dd December 9, 2014 +.Dd August 12, 2016 .Dt PS 1 .Os .Sh NAME @@ -310,7 +310,6 @@ the include file .It Dv "P_ADVLOCK" Ta No "0x00001" Ta "Process may hold a POSIX advisory lock" .It Dv "P_CONTROLT" Ta No "0x00002" Ta "Has a controlling terminal" .It Dv "P_KTHREAD" Ta No "0x00004" Ta "Kernel thread" -.It Dv "P_FOLLOWFORK" Ta No "0x00008" Ta "Attach debugger to new children" .It Dv "P_PPWAIT" Ta No "0x00010" Ta "Parent is waiting for child to exec/exit" .It Dv "P_PROFIL" Ta No "0x00020" Ta "Has started profiling" .It Dv "P_STOPPROF" Ta No "0x00040" Ta "Has thread in requesting to stop prof" |