The patch titled
Subject: fs, fanotify: ddd missing pieces in fdinfo for ability to call fanotify_init
has been added to the -mm tree. Its filename is
fs-notify-add-procfs-fdinfo-helper-v7-fs-fanotify-ddd-missing-pieces-in-fdinfo-for-ability-to-call-fanotify_init.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Subject: fs, fanotify: ddd missing pieces in fdinfo for ability to call fanotify_init
While restoring fanotify objects I discovered that the minimum information
we provide now is enough to restore notification marks but still a bit
incomplete for fanotify_init system call (the @flags and @event-flags are
unknown). This patch adds missing bits into fdinfo output.
An example of output is below
| pos: 0
| flags: 04002
| fanotify flags:10 event-flags:0
| fanotify mnt_id:12 mask:3b ignored_mask:0
| fanotify ino:50205 sdev:800013 mask:3b ignored_mask:40000000 fhandle-bytes:8 fhandle-type:1 f_handle:05020500fb1d47e7
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andrey Vagin <avagin@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: James Bottomley <jbottomley@xxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Matthew Helsley <matt.helsley@xxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/notify/fdinfo.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff -puN fs/notify/fdinfo.c~fs-notify-add-procfs-fdinfo-helper-v7-fs-fanotify-ddd-missing-pieces-in-fdinfo-for-ability-to-call-fanotify_init fs/notify/fdinfo.c
--- a/fs/notify/fdinfo.c~fs-notify-add-procfs-fdinfo-helper-v7-fs-fanotify-ddd-missing-pieces-in-fdinfo-for-ability-to-call-fanotify_init
+++ a/fs/notify/fdinfo.c
@@ -4,6 +4,7 @@
#include <linux/idr.h>
#include <linux/init.h>
#include <linux/inotify.h>
+#include <linux/fanotify.h>
#include <linux/kernel.h>
#include <linux/namei.h>
#include <linux/sched.h>
@@ -140,6 +141,30 @@ out:
int fanotify_show_fdinfo(struct seq_file *m, struct file *f)
{
+ struct fsnotify_group *group = f->private_data;
+ unsigned int flags = 0;
+
+ switch (group->priority) {
+ case FS_PRIO_0:
+ flags |= FAN_CLASS_NOTIF;
+ break;
+ case FS_PRIO_1:
+ flags |= FAN_CLASS_CONTENT;
+ break;
+ case FS_PRIO_2:
+ flags |= FAN_CLASS_PRE_CONTENT;
+ break;
+ }
+
+ if (group->max_events == UINT_MAX)
+ flags |= FAN_UNLIMITED_QUEUE;
+
+ if (group->fanotify_data.max_marks == UINT_MAX)
+ flags |= FAN_UNLIMITED_MARKS;
+
+ seq_printf(m, "fanotify flags:%x event-flags:%x\n",
+ flags, group->fanotify_data.f_flags);
+
return show_fdinfo(m, f, fanotify_fdinfo);
}
_
Patches currently in -mm which might be from gorcunov@xxxxxxxxxx are
linux-next.patch
procfs-add-vmflags-field-in-smaps-output-v4.patch
procfs-add-vmflags-field-in-smaps-output-v4-fix.patch
proc-pid-status-add-seccomp-field.patch
kcmp-selftests-make-run_tests-fix.patch
kcmp-selftests-print-fail-status-instead-of-cause-make-error.patch
tools-testing-selftests-kcmp-kcmp_testc-print-reason-for-failure-in-kcmp_test.patch
procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers.patch
fs-eventfd-add-procfs-fdinfo-helper.patch
fs-epoll-add-procfs-fdinfo-helper-v2.patch
fs-epoll-add-procfs-fdinfo-helper-v2-fs-epoll-drop-enabled-field-from-fdinfo-output.patch
fdinfo-show-sigmask-for-signalfd-fd-v3.patch
fs-exportfs-escape-nil-dereference-if-no-s_export_op-present.patch
fs-exportfs-add-exportfs_encode_inode_fh-helper.patch
fs-notify-add-procfs-fdinfo-helper-v7.patch
fs-notify-add-procfs-fdinfo-helper-v7-fix-fix.patch
fs-notify-add-procfs-fdinfo-helper-v7-add-missing-space-after-prefix.patch
fs-notify-add-procfs-fdinfo-helper-v7-dont-forget-to-provide-fhandle-for-inode-fanotify.patch
fs-notify-add-procfs-fdinfo-helper-v7-fs-fanotify-ddd-missing-pieces-in-fdinfo-for-ability-to-call-fanotify_init.patch
docs-add-documentation-about-proc-pid-fdinfo-fd-output.patch
docs-add-documentation-about-proc-pid-fdinfo-fd-output-fix.patch
fs-notify-add-procfs-fdinfo-helper-v7-fix.patch
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