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| author | Kawai, Hidehiro <hidehiro.kawai.ez@hitachi.com> | 2007-07-19 01:48:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-19 10:04:47 -0700 |
| commit | 3cb4a0bb1e773e3c41800b33a3f7dab32bd06c64 (patch) | |
| tree | d363522865706f0674b7b104a8fc7b151f336764 /kernel/fork.c | |
| parent | 6c5d523826dc639df709ed0f88c5d2ce25379652 (diff) | |
| download | op-kernel-dev-3cb4a0bb1e773e3c41800b33a3f7dab32bd06c64.zip op-kernel-dev-3cb4a0bb1e773e3c41800b33a3f7dab32bd06c64.tar.gz | |
coredump masking: add an interface for core dump filter
This patch adds an interface to set/reset flags which determines each memory
segment should be dumped or not when a core file is generated.
/proc/<pid>/coredump_filter file is provided to access the flags. You can
change the flag status for a particular process by writing to or reading from
the file.
The flag status is inherited to the child process when it is created.
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index ba39bdb..4698389 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -334,6 +334,8 @@ static struct mm_struct * mm_init(struct mm_struct * mm) atomic_set(&mm->mm_count, 1); init_rwsem(&mm->mmap_sem); INIT_LIST_HEAD(&mm->mmlist); + mm->flags = (current->mm) ? current->mm->flags + : MMF_DUMP_FILTER_DEFAULT; mm->core_waiters = 0; mm->nr_ptes = 0; set_mm_counter(mm, file_rss, 0); |
