]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match
authorDenys Vlasenko <vda.linux@googlemail.com>
Fri, 23 Mar 2012 22:02:42 +0000 (15:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 23 Mar 2012 23:58:41 +0000 (16:58 -0700)
commit5cdf389aee90109e2e3d88085dea4dd5508a3be7
treeab59bc0fef6800ea6bbe20a1828bd396094bfbf8
parentaa9147c98f27550bd39416eca5a5844e54bced26
ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match

PTRACE_EVENT_foo and PTRACE_O_TRACEfoo used to match.

New PTRACE_EVENT_STOP is the first event which has no corresponding
PTRACE_O_TRACE option.  If we will ever want to add another such option,
its PTRACE_EVENT's value will collide with PTRACE_EVENT_STOP's value.

This patch changes PTRACE_EVENT_STOP value to prevent this.

While at it, added a comment - the one atop PTRACE_EVENT block, saying
"Wait extended result codes for the above trace options", is not true
for PTRACE_EVENT_STOP.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Tejun Heo <tj@kernel.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/ptrace.h