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Date: Wed, 22 Dec 2010 16:22:13 +0100
From: Jozef Kralik <jozef.kralik@...t.sk>
To: <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Eric Paris <eparis@...hat.com>
Subject: [Patch 1/1] fsnotify,fanotify: adding flag for execution
From: Jozef Kralik <jozef.kralik@...t.sk>
This patch add flag FS_OPENEXEC[FAN_OPENEXEC] to event
FS_OPEN_PERM[FAN_OPEN_PERM], when file is opened with flag FMODE_EXEC.
Signed-off-by: Jozef Kralik <jozef.kralik@...t.sk>
---
Example:
if (metadata->mask & FAN_OPEN_PERM)
if (metadata->mask & FAN_OPENEXEC)
printf("file was executed");
else
printf("file was opened");
Developed & Tested kernel: 2.6.37-rc4 with patch:
patch-v2.6.37-rc4-next-20101201
diffstat -p1 patch
fs/notify/fanotify/fanotify.c | 1 +
fs/notify/fsnotify.c | 2 +-
include/linux/fanotify.h | 4 +++-
include/linux/fsnotify.h | 9 ++++++---
include/linux/fsnotify_backend.h | 4 +++-
5 files changed, 14 insertions(+), 6 deletions(-)
diff -uprN -X linux-2.6.37-rc4/Documentation/dontdiff
linux-2.6.37-rc4/fs/notify/fanotify/fanotify.c
linux-2.6.37-rc4-dev/fs/notify/fanotify/fanotify.c
--- linux-2.6.37-rc4/fs/notify/fanotify/fanotify.c 2010-12-08
10:07:17.605885678 +0100
+++ linux-2.6.37-rc4-dev/fs/notify/fanotify/fanotify.c 2010-12-08
10:08:06.729268116 +0100
@@ -131,6 +131,7 @@ static int fanotify_handle_event(struct
BUILD_BUG_ON(FAN_CLOSE_NOWRITE != FS_CLOSE_NOWRITE);
BUILD_BUG_ON(FAN_CLOSE_WRITE != FS_CLOSE_WRITE);
BUILD_BUG_ON(FAN_OPEN != FS_OPEN);
+ BUILD_BUG_ON(FAN_OPENEXEC != FS_OPENEXEC);
BUILD_BUG_ON(FAN_EVENT_ON_CHILD != FS_EVENT_ON_CHILD);
BUILD_BUG_ON(FAN_Q_OVERFLOW != FS_Q_OVERFLOW);
BUILD_BUG_ON(FAN_OPEN_PERM != FS_OPEN_PERM);
diff -uprN -X linux-2.6.37-rc4/Documentation/dontdiff
linux-2.6.37-rc4/fs/notify/fsnotify.c
linux-2.6.37-rc4-dev/fs/notify/fsnotify.c
--- linux-2.6.37-rc4/fs/notify/fsnotify.c 2010-11-30 05:42:04.000000000
+0100
+++ linux-2.6.37-rc4-dev/fs/notify/fsnotify.c 2010-12-08
10:08:06.729268116 +0100
@@ -297,7 +297,7 @@ static __init int fsnotify_init(void)
{
int ret;
- BUG_ON(hweight32(ALL_FSNOTIFY_EVENTS) != 23);
+ BUG_ON(hweight32(ALL_FSNOTIFY_EVENTS) != 24);
ret = init_srcu_struct(&fsnotify_mark_srcu);
if (ret)
diff -uprN -X linux-2.6.37-rc4/Documentation/dontdiff
linux-2.6.37-rc4/include/linux/fanotify.h
linux-2.6.37-rc4-dev/include/linux/fanotify.h
--- linux-2.6.37-rc4/include/linux/fanotify.h 2010-12-08
10:07:17.649885125 +0100
+++ linux-2.6.37-rc4-dev/include/linux/fanotify.h 2010-12-08
10:08:06.733268063 +0100
@@ -9,6 +9,7 @@
#define FAN_CLOSE_WRITE 0x00000008 /* Writtable file closed */
#define FAN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
#define FAN_OPEN 0x00000020 /* File was opened */
+#define FAN_OPENEXEC 0x00001000 /* File had exec flag */
#define FAN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
@@ -84,7 +85,8 @@
#define FAN_ALL_OUTGOING_EVENTS (FAN_ALL_EVENTS |\
FAN_ALL_PERM_EVENTS |\
- FAN_Q_OVERFLOW)
+ FAN_Q_OVERFLOW |\
+ FAN_OPENEXEC)
#define FANOTIFY_METADATA_VERSION 2
diff -uprN -X linux-2.6.37-rc4/Documentation/dontdiff
linux-2.6.37-rc4/include/linux/fsnotify_backend.h
linux-2.6.37-rc4-dev/include/linux/fsnotify_backend.h
--- linux-2.6.37-rc4/include/linux/fsnotify_backend.h 2010-12-08
10:07:17.657885026 +0100
+++ linux-2.6.37-rc4-dev/include/linux/fsnotify_backend.h 2010-12-08
10:08:06.741267961 +0100
@@ -36,6 +36,7 @@
#define FS_DELETE 0x00000200 /* Subfile was deleted */
#define FS_DELETE_SELF 0x00000400 /* Self was deleted */
#define FS_MOVE_SELF 0x00000800 /* Self was moved */
+#define FS_OPENEXEC 0x00001000 /* File had exec flag */
#define FS_UNMOUNT 0x00002000 /* inode on umount fs */
#define FS_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
@@ -73,7 +74,8 @@
FS_UNMOUNT | FS_Q_OVERFLOW | FS_IN_IGNORED | \
FS_OPEN_PERM | FS_ACCESS_PERM | FS_EXCL_UNLINK | \
FS_ISDIR | FS_IN_ONESHOT | FS_DN_RENAME | \
- FS_DN_MULTISHOT | FS_EVENT_ON_CHILD)
+ FS_DN_MULTISHOT | FS_EVENT_ON_CHILD | \
+ FS_OPENEXEC)
struct fsnotify_group;
struct fsnotify_event;
diff -uprN -X linux-2.6.37-rc4/Documentation/dontdiff
linux-2.6.37-rc4/include/linux/fsnotify.h
linux-2.6.37-rc4-dev/include/linux/fsnotify.h
--- linux-2.6.37-rc4/include/linux/fsnotify.h 2010-12-08
10:07:17.653885076 +0100
+++ linux-2.6.37-rc4-dev/include/linux/fsnotify.h 2010-12-08
10:11:17.086874772 +0100
@@ -46,12 +46,15 @@ static inline int fsnotify_perm(struct f
return 0;
if (!(mask & (MAY_READ | MAY_OPEN)))
return 0;
- if (mask & MAY_OPEN)
+ if (mask & MAY_OPEN) {
fsnotify_mask = FS_OPEN_PERM;
- else if (mask & MAY_READ)
+ if (file->f_flags & FMODE_EXEC)
+ fsnotify_mask |= FS_OPENEXEC;
+ } else if (mask & MAY_READ) {
fsnotify_mask = FS_ACCESS_PERM;
- else
+ } else {
BUG();
+ }
ret = fsnotify_parent(path, NULL, fsnotify_mask);
if (ret)
--
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