diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-02-08 07:18:58 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 12:22:26 -0500 |
| commit | 6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4 (patch) | |
| tree | 60d3d9719eef3076527fcbf9c3cb362fe0f52d61 /include | |
| parent | 01b8b07a5d77d22e609267dcae74d15e3e9c5f13 (diff) | |
kill PT_ATTACHED
Since the patch
"Fix ptrace_attach()/ptrace_traceme()/de_thread() race"
commit f5b40e363ad6041a96e3da32281d8faa191597b9
we set PT_ATTACHED and change child->parent "atomically" wrt task_list lock.
This means we can remove the checks like "PT_ATTACHED && ->parent != ptracer"
which were needed to catch the "ptrace attach is in progress" case. We can
also remove the flag itself since nobody else uses it.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ptrace.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 6ab80714a916..ebe0c17039cf 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h | |||
| @@ -67,7 +67,6 @@ | |||
| 67 | #define PT_TRACE_EXEC 0x00000080 | 67 | #define PT_TRACE_EXEC 0x00000080 |
| 68 | #define PT_TRACE_VFORK_DONE 0x00000100 | 68 | #define PT_TRACE_VFORK_DONE 0x00000100 |
| 69 | #define PT_TRACE_EXIT 0x00000200 | 69 | #define PT_TRACE_EXIT 0x00000200 |
| 70 | #define PT_ATTACHED 0x00000400 /* parent != real_parent */ | ||
| 71 | 70 | ||
| 72 | #define PT_TRACE_MASK 0x000003f4 | 71 | #define PT_TRACE_MASK 0x000003f4 |
| 73 | 72 | ||