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ptrace.2: Note use of 'data' for PTRACE_SYS{CALL,EMU} and PTRCAE_*_SINGLESTEP 

These operations use the 'data' argument as a signal number,
like PTRACE_CONT.

Reported-by: Mike Frysinger <vapier@gentoo.org>
Reported-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2009-03-30 13:30:07 +13:00
parent 48e4cfa0de
commit 94cffcd707
1 changed files with 9 additions and 1 deletions
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10
man2/ptrace.2
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@ -331,6 +331,10 @@ then do another
.B PTRACE_SYSCALL
and inspect the return value of
the system call at the second stop.
The
.I data
argument is treated as for
.BR PTRACE_CONT .
(\fIaddr\fP is ignored.)
.TP
.BR PTRACE_SYSEMU ", " PTRACE_SYSEMU_SINGLESTEP " (since Linux 2.6.14)"
@ -344,7 +348,11 @@ do the same
but also singlestep if not a syscall.
This call is used by programs like
User Mode Linux that want to emulate all the child's system calls.
(\fIaddr\fP and \fIdata\fP are ignored;
The
.I data
argument is treated as for
.BR PTRACE_CONT .
(\fIaddr\fP is ignored;
not supported on all architectures.)
.TP
.B PTRACE_KILL