openwrt/target/linux/generic/patches-3.12/501-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch

--- a/fs/yaffs2/yaffs_vfs.c
+++ b/fs/yaffs2/yaffs_vfs.c
@@ -329,6 +329,33 @@ static int yaffs_readpage(struct file *f
 	return ret;
 }
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0))
+#define YCRED_FSUID()	from_kuid(&init_user_ns, current_fsuid())
+#define YCRED_FSGID()	from_kgid(&init_user_ns, current_fsgid())
+#else
+#define YCRED_FSUID()	YCRED(current)->fsuid
+#define YCRED_FSGID()	YCRED(current)->fsgid
+
+static inline uid_t i_uid_read(const struct inode *inode)
+{
+	return inode->i_uid;
+}
+
+static inline gid_t i_gid_read(const struct inode *inode)
+{
+	return inode->i_gid;
+}
+
+static inline void i_uid_write(struct inode *inode, uid_t uid)
+{
+	inode->i_uid = uid;
+}
+
+static inline void i_gid_write(struct inode *inode, gid_t gid)
+{
+	inode->i_gid = gid;
+}
+#endif
 
 static void yaffs_set_super_dirty_val(struct yaffs_dev *dev, int val)
 {
@@ -1225,9 +1252,9 @@ static int yaffs_mknod(struct inode *dir
 	struct yaffs_obj *parent = yaffs_inode_to_obj(dir);
 
 	int error = -ENOSPC;
-	uid_t uid = YCRED(current)->fsuid;
+	uid_t uid = YCRED_FSUID();
 	gid_t gid =
-	    (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+	    (dir->i_mode & S_ISGID) ? i_gid_read(dir) : YCRED_FSGID();
 
 	if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
 		mode |= S_ISGID;
@@ -1424,9 +1451,9 @@ static int yaffs_symlink(struct inode *d
 {
 	struct yaffs_obj *obj;
 	struct yaffs_dev *dev;
-	uid_t uid = YCRED(current)->fsuid;
+	uid_t uid = YCRED_FSUID();
 	gid_t gid =
-	    (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+	    (dir->i_mode & S_ISGID) ? i_gid_read(dir) : YCRED_FSGID();
 
 	yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink");
 
@@ -1829,8 +1856,8 @@ static void yaffs_fill_inode_from_obj(st
 
 		inode->i_ino = obj->obj_id;
 		inode->i_mode = obj->yst_mode;
-		inode->i_uid = obj->yst_uid;
-		inode->i_gid = obj->yst_gid;
+		i_uid_write(inode, obj->yst_uid);
+		i_gid_write(inode, obj->yst_gid);
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 		inode->i_blksize = inode->i_sb->s_blocksize;
 #endif
@@ -1856,7 +1883,7 @@ static void yaffs_fill_inode_from_obj(st
 
 		yaffs_trace(YAFFS_TRACE_OS,
 			"yaffs_fill_inode mode %x uid %d gid %d size %lld count %d",
-			inode->i_mode, inode->i_uid, inode->i_gid,
+			inode->i_mode, i_uid_read(inode), i_gid_read(inode),
 			inode->i_size, atomic_read(&inode->i_count));
 
 		switch (obj->yst_mode & S_IFMT) {
--- a/fs/yaffs2/yaffs_attribs.c
+++ b/fs/yaffs2/yaffs_attribs.c
@@ -14,6 +14,48 @@
 #include "yaffs_guts.h"
 #include "yaffs_attribs.h"
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0))
+static inline uid_t ia_uid_read(const struct iattr *iattr)
+{
+	return from_kuid(&init_user_ns, iattr->ia_uid);
+}
+
+static inline gid_t ia_gid_read(const struct iattr *iattr)
+{
+	return from_kgid(&init_user_ns, iattr->ia_gid);
+}
+
+static inline void ia_uid_write(struct iattr *iattr, uid_t uid)
+{
+	iattr->ia_uid = make_kuid(&init_user_ns, uid);
+}
+
+static inline void ia_gid_write(struct iattr *iattr, gid_t gid)
+{
+	iattr->ia_gid = make_kgid(&init_user_ns, gid);
+}
+#else
+static inline uid_t ia_uid_read(const struct iattr *iattr)
+{
+	return iattr->ia_uid;
+}
+
+static inline gid_t ia_gid_read(const struct iattr *inode)
+{
+	return iattr->ia_gid;
+}
+
+static inline void ia_uid_write(struct iattr *iattr, uid_t uid)
+{
+	iattr->ia_uid = uid;
+}
+
+static inline void ia_gid_write(struct iattr *iattr, gid_t gid)
+{
+	iattr->ia_gid = gid;
+}
+#endif
+
 void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
 {
 	obj->yst_uid = oh->yst_uid;
@@ -77,9 +119,9 @@ int yaffs_set_attribs(struct yaffs_obj *
 	if (valid & ATTR_MODE)
 		obj->yst_mode = attr->ia_mode;
 	if (valid & ATTR_UID)
-		obj->yst_uid = attr->ia_uid;
+		obj->yst_uid =  ia_uid_read(attr);
 	if (valid & ATTR_GID)
-		obj->yst_gid = attr->ia_gid;
+		obj->yst_gid =  ia_gid_read(attr);
 
 	if (valid & ATTR_ATIME)
 		obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
@@ -103,9 +145,9 @@ int yaffs_get_attribs(struct yaffs_obj *
 
 	attr->ia_mode = obj->yst_mode;
 	valid |= ATTR_MODE;
-	attr->ia_uid = obj->yst_uid;
+	ia_uid_write(attr, obj->yst_uid);
 	valid |= ATTR_UID;
-	attr->ia_gid = obj->yst_gid;
+	ia_gid_write(attr, obj->yst_gid);
 	valid |= ATTR_GID;
 
 	Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;