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| author | Roland McGrath <roland@redhat.com> | 2007-01-26 00:56:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-01-26 13:50:58 -0800 |
| commit | e5b97dde514f9bd43f9e525451d0a863c4fc8a9a (patch) | |
| tree | e1096d4446c5dab878b50b7001cd58ab9ce5fa45 /fs/binfmt_elf.c | |
| parent | b6558c4a2378af06f2beca6c8a3304e21d1cf135 (diff) | |
| download | linux-e5b97dde514f9bd43f9e525451d0a863c4fc8a9a.tar.gz | |
[PATCH] Add VM_ALWAYSDUMP
This patch adds the VM_ALWAYSDUMP flag for vm_flags in vm_area_struct. This provides a clean explicit way to have a vma always included in core dumps, as is needed for vDSO's. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/binfmt_elf.c')
| -rw-r--r-- | fs/binfmt_elf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 7cb28720f90e..6fec8bfa6bac 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1178,6 +1178,10 @@ static int dump_seek(struct file *file, loff_t off) */ static int maydump(struct vm_area_struct *vma) { + /* The vma can be set up to tell us the answer directly. */ + if (vma->vm_flags & VM_ALWAYSDUMP) + return 1; + /* Do not dump I/O mapped devices or special mappings */ if (vma->vm_flags & (VM_IO | VM_RESERVED)) return 0; |