The kernel keeps FAN_MARK_IGNORED_SURV_MODIFY bit separately from
fsnotify_mark::mask|ignored_mask thus put it in @mflags (mark flags)
field so the user-space reader will be able to detect if such bit
were used on mark creation procedure.
| pos: 0
| flags: 04002
| fanotify flags:10 event-flags:0
| fanotify mnt_id:12 mflags:40 mask:38 ignored_mask:40000003
| fanotify ino:4f969 sdev:800013 mflags:0 mask:3b ignored_mask:40000000
fhandle-bytes:8 fhandle-type:1 f_handle:69f90400c275b5b4
Signed-off-by: Cyrill Gorcunov <gorcu...@openvz.org>
CC: Pavel Emelyanov <xe...@parallels.com>
CC: Oleg Nesterov <o...@redhat.com>
CC: Andrey Vagin <ava...@openvz.org>
CC: Al Viro <v...@zeniv.linux.org.uk>
CC: Alexey Dobriyan <adobri...@gmail.com>
CC: Andrew Morton <a...@linux-foundation.org>
CC: James Bottomley <jbottom...@parallels.com>
CC: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com>
CC: Matthew Helsley <matt.hels...@gmail.com>
CC: "J. Bruce Fields" <bfie...@fieldses.org>
CC: Tvrtko Ursulin <tvrtko.ursu...@onelan.co.uk>
---
fs/notify/fdinfo.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
Index: linux-2.6.git/fs/notify/fdinfo.c
===================================================================
--- linux-2.6.git.orig/fs/notify/fdinfo.c
+++ linux-2.6.git/fs/notify/fdinfo.c
@@ -111,29 +111,33 @@ int inotify_show_fdinfo(struct seq_file
static int fanotify_fdinfo(struct seq_file *m, struct fsnotify_mark *mark)
{
+ unsigned int mflags = 0;
struct inode *inode;
int ret = 0;
if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE))
return 0;
+ if (mark->flags & FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY)
+ mflags |= FAN_MARK_IGNORED_SURV_MODIFY;
+
if (mark->flags & FSNOTIFY_MARK_FLAG_INODE) {
inode = igrab(mark->i.inode);
if (!inode)
goto out;
ret = seq_printf(m, "fanotify ino:%lx sdev:%x "
- "mask:%x ignored_mask:%x ",
+ "mflags:%x mask:%x ignored_mask:%x ",
inode->i_ino, inode->i_sb->s_dev,
- mark->mask, mark->ignored_mask);
+ mflags, mark->mask, mark->ignored_mask);
ret |= show_mark_fhandle(m, inode);
ret |= seq_putc(m, '\n');
iput(inode);
} else if (mark->flags & FSNOTIFY_MARK_FLAG_VFSMOUNT) {
struct mount *mnt = real_mount(mark->m.mnt);
- ret = seq_printf(m, "fanotify mnt_id:%x mask:%x "
- "ignored_mask:%x\n",
- mnt->mnt_id, mark->mask, mark->ignored_mask);
+ ret = seq_printf(m, "fanotify mnt_id:%x mflags:%x mask:%x "
+ "ignored_mask:%x\n", mnt->mnt_id, mflags,
+ mark->mask, mark->ignored_mask);
}
out:
return ret;
--
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