The patch titled
vfs: separate FMODE_PREAD/FMODE_PWRITE into separate flags
has been added to the -mm tree. Its filename is
vfs-separate-fmode_pread-fmode_pwrite-into-separate-flags.patch
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------------------------------------------------------
Subject: vfs: separate FMODE_PREAD/FMODE_PWRITE into separate flags
From: Paul Turner <pjt@xxxxxxxxxx>
Separate FMODE_PREAD and FMODE_PWRITE into separate flags to reflect the
reality that the read and write paths may have independent restrictions.
A git grep verifies that these flags are always cleared together so this
new behavior will only apply to interfaces that change to clear flags
individually.
This is required for "seq_file: properly cope with pread", a post-2.6.25
regression fix.
Signed-off-by: Paul Turner <pjt@xxxxxxxxxx>
Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx> [2.6.25.x, 2.6.26.x, 2.6.27.x, 2.6.28.x]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/fs.h | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff -puN include/linux/fs.h~vfs-separate-fmode_pread-fmode_pwrite-into-separate-flags include/linux/fs.h
--- a/include/linux/fs.h~vfs-separate-fmode_pread-fmode_pwrite-into-separate-flags
+++ a/include/linux/fs.h
@@ -60,18 +60,19 @@ struct inodes_stat_t {
#define FMODE_WRITE ((__force fmode_t)2)
/* file is seekable */
#define FMODE_LSEEK ((__force fmode_t)4)
-/* file can be accessed using pread/pwrite */
+/* file can be accessed using pread */
#define FMODE_PREAD ((__force fmode_t)8)
-#define FMODE_PWRITE FMODE_PREAD /* These go hand in hand */
+/* file can be accessed using pwrite */
+#define FMODE_PWRITE ((__force fmode_t)16)
/* File is opened for execution with sys_execve / sys_uselib */
-#define FMODE_EXEC ((__force fmode_t)16)
+#define FMODE_EXEC ((__force fmode_t)32)
/* File is opened with O_NDELAY (only set for block devices) */
-#define FMODE_NDELAY ((__force fmode_t)32)
+#define FMODE_NDELAY ((__force fmode_t)64)
/* File is opened with O_EXCL (only set for block devices) */
-#define FMODE_EXCL ((__force fmode_t)64)
+#define FMODE_EXCL ((__force fmode_t)128)
/* File is opened using open(.., 3, ..) and is writeable only for ioctls
(specialy hack for floppy.c) */
-#define FMODE_WRITE_IOCTL ((__force fmode_t)128)
+#define FMODE_WRITE_IOCTL ((__force fmode_t)256)
/*
* Don't update ctime and mtime.
_
Patches currently in -mm which might be from pjt@xxxxxxxxxx are
vfs-separate-fmode_pread-fmode_pwrite-into-separate-flags.patch
vfs-separate-fmode_pread-fmode_pwrite-into-separate-flags-fix.patch
seq_file-move-traverse-so-it-can-be-used-from-seq_read.patch
seq_file-properly-cope-with-pread.patch
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