1 files changed, 22 insertions, 19 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0dcdd9458f4b..195a8cb2a749 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -63,23 +63,24 @@ extern int dir_notify_enable;
 #define MAY_ACCESS 16
 #define MAY_OPEN 32
 
-#define FMODE_READ ((__force fmode_t)1)
-#define FMODE_WRITE ((__force fmode_t)2)
-
-/* Internal kernel extensions */
-#define FMODE_LSEEK     ((__force fmode_t)4)
-#define FMODE_PREAD     ((__force fmode_t)8)
-#define FMODE_PWRITE    FMODE_PREAD     /* These go hand in hand */
-
-/* File is being opened for execution. Primary users of this flag are
-   distributed filesystems that can use it to achieve correct ETXTBUSY
-   behavior for cross-node execution/opening_for_writing of files */
-#define FMODE_EXEC      ((__force fmode_t)16)
-
-#define FMODE_NDELAY    ((__force fmode_t)32)
-#define FMODE_EXCL      ((__force fmode_t)64)
+/* file is open for reading */
+#define FMODE_READ              ((__force fmode_t)1)
+/* file is open for writing */
+#define FMODE_WRITE             ((__force fmode_t)2)
+/* file is seekable */
+#define FMODE_LSEEK             ((__force fmode_t)4)
+/* file can be accessed using pread/pwrite */
+#define FMODE_PREAD             ((__force fmode_t)8)
+#define FMODE_PWRITE            FMODE_PREAD     /* These go hand in hand */
+/* File is opened for execution with sys_execve / sys_uselib */
+#define FMODE_EXEC              ((__force fmode_t)16)
+/* File is opened with O_NDELAY (only set for block devices) */
+#define FMODE_NDELAY            ((__force fmode_t)32)
+/* File is opened with O_EXCL (only set for block devices) */
+#define FMODE_EXCL              ((__force fmode_t)64)
+/* 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_NDELAY_NOW        ((__force fmode_t)256)
 
 #define RW_MASK         1
 #define RWA_MASK        2
@@ -315,6 +316,7 @@ struct poll_table_struct;
 struct kstatfs;
 struct vm_area_struct;
 struct vfsmount;
+struct cred;
 
 extern void __init inode_init(void);
 extern void __init inode_init_early(void);
@@ -826,7 +828,7 @@ struct file {
         fmode_t                 f_mode;
         loff_t                  f_pos;
         struct fown_struct      f_owner;
-        unsigned int            f_uid, f_gid;
+        const struct cred       *f_cred;
         struct file_ra_state    f_ra;
 
         u64                     f_version;
@@ -1193,7 +1195,7 @@ enum {
 #define has_fs_excl() atomic_read(&current->fs_excl)
 
 #define is_owner_or_cap(inode)  \
-        ((current->fsuid == (inode)->i_uid) || capable(CAP_FOWNER))
+        ((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER))
 
 /* not quite ready to be deprecated, but... */
 extern void lock_super(struct super_block *);
@@ -1673,7 +1675,8 @@ extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
 extern long do_sys_open(int dfd, const char __user *filename, int flags,
                         int mode);
 extern struct file *filp_open(const char *, int, int);
-extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
+extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
+                                 const struct cred *);
 extern int filp_close(struct file *, fl_owner_t id);
 extern char * getname(const char __user *);