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ptrace.2: Mention that PTRACE_PEEK* libc API and kernel API are different 

Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Denys Vlasenko 2013-07-02 13:20:04 +02:00 committed by Michael Kerrisk
parent 0d9df44eaa
commit 78686915ae
1 changed files with 9 additions and 2 deletions
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man2/ptrace.2
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@ -1714,8 +1714,15 @@ the report is sent only once.
.SH RETURN VALUE
On success,
.B PTRACE_PEEK*
requests return the requested data,
while other requests return zero.
requests return the requested data, while other requests return zero.
(On Linux, this is done in the libc wrapper around ptrace system call.
On the system call level,
.B PTRACE_PEEK*
requests have a different API: they store the result
at the address specified by
.I data
parameter, and return value is the error flag.)
.LP
On error, all requests return \-1, and
.I errno
is set appropriately.