diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2012-03-23 15:02:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 16:58:41 -0700 |
| commit | ee00560c7dac1dbbf048446a8489550d0a5765b7 (patch) | |
| tree | e2a07e3ee58daa2a915634b18bb14d6c75c3e006 /kernel/ptrace.c | |
| parent | 5cdf389aee90109e2e3d88085dea4dd5508a3be7 (diff) | |
| download | lwn-ee00560c7dac1dbbf048446a8489550d0a5765b7.tar.gz lwn-ee00560c7dac1dbbf048446a8489550d0a5765b7.zip | |
ptrace: remove PTRACE_SEIZE_DEVEL bit
PTRACE_SEIZE code is tested and ready for production use, remove the
code which requires special bit in data argument to make PTRACE_SEIZE
work.
Strace team prepares for a new release of strace, and we would like to
ship the code which uses PTRACE_SEIZE, preferably after this change goes
into released kernel.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-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>
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 4661c5bc07e5..ee8d49b9c309 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -237,25 +237,10 @@ static int ptrace_attach(struct task_struct *task, long request, bool seize = (request == PTRACE_SEIZE); int retval; - /* - * SEIZE will enable new ptrace behaviors which will be implemented - * gradually. SEIZE_DEVEL bit is used to prevent applications - * expecting full SEIZE behaviors trapping on kernel commits which - * are still in the process of implementing them. - * - * Only test programs for new ptrace behaviors being implemented - * should set SEIZE_DEVEL. If unset, SEIZE will fail with -EIO. - * - * Once SEIZE behaviors are completely implemented, this flag - * will be removed. - */ retval = -EIO; if (seize) { if (addr != 0) goto out; - if (!(flags & PTRACE_SEIZE_DEVEL)) - goto out; - flags &= ~(unsigned long)PTRACE_SEIZE_DEVEL; if (flags & ~(unsigned long)PTRACE_O_MASK) goto out; flags = PT_PTRACED | PT_SEIZED | (flags << PT_OPT_FLAG_SHIFT); |