zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/fs/jfs/jfs_inode.c b/ap/os/linux/linux-3.4.x/fs/jfs/jfs_inode.c
new file mode 100644
index 0000000..7f464c5
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/jfs/jfs_inode.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) International Business Machines Corp., 2000-2004
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/fs.h>
+#include <linux/quotaops.h>
+#include "jfs_incore.h"
+#include "jfs_inode.h"
+#include "jfs_filsys.h"
+#include "jfs_imap.h"
+#include "jfs_dinode.h"
+#include "jfs_debug.h"
+
+
+void jfs_set_inode_flags(struct inode *inode)
+{
+ unsigned int flags = JFS_IP(inode)->mode2;
+
+ inode->i_flags &= ~(S_IMMUTABLE | S_APPEND |
+ S_NOATIME | S_DIRSYNC | S_SYNC);
+
+ if (flags & JFS_IMMUTABLE_FL)
+ inode->i_flags |= S_IMMUTABLE;
+ if (flags & JFS_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+ if (flags & JFS_NOATIME_FL)
+ inode->i_flags |= S_NOATIME;
+ if (flags & JFS_DIRSYNC_FL)
+ inode->i_flags |= S_DIRSYNC;
+ if (flags & JFS_SYNC_FL)
+ inode->i_flags |= S_SYNC;
+}
+
+void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
+{
+ unsigned int flags = jfs_ip->vfs_inode.i_flags;
+
+ jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
+ JFS_DIRSYNC_FL | JFS_SYNC_FL);
+ if (flags & S_IMMUTABLE)
+ jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
+ if (flags & S_APPEND)
+ jfs_ip->mode2 |= JFS_APPEND_FL;
+ if (flags & S_NOATIME)
+ jfs_ip->mode2 |= JFS_NOATIME_FL;
+ if (flags & S_DIRSYNC)
+ jfs_ip->mode2 |= JFS_DIRSYNC_FL;
+ if (flags & S_SYNC)
+ jfs_ip->mode2 |= JFS_SYNC_FL;
+}
+
+/*
+ * NAME: ialloc()
+ *
+ * FUNCTION: Allocate a new inode
+ *
+ */
+struct inode *ialloc(struct inode *parent, umode_t mode)
+{
+ struct super_block *sb = parent->i_sb;
+ struct inode *inode;
+ struct jfs_inode_info *jfs_inode;
+ int rc;
+
+ inode = new_inode(sb);
+ if (!inode) {
+ jfs_warn("ialloc: new_inode returned NULL!");
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ jfs_inode = JFS_IP(inode);
+
+ rc = diAlloc(parent, S_ISDIR(mode), inode);
+ if (rc) {
+ jfs_warn("ialloc: diAlloc returned %d!", rc);
+ if (rc == -EIO)
+ make_bad_inode(inode);
+ goto fail_put;
+ }
+
+ if (insert_inode_locked(inode) < 0) {
+ rc = -EINVAL;
+ goto fail_put;
+ }
+
+ inode_init_owner(inode, parent, mode);
+ /*
+ * New inodes need to save sane values on disk when
+ * uid & gid mount options are used
+ */
+ jfs_inode->saved_uid = inode->i_uid;
+ jfs_inode->saved_gid = inode->i_gid;
+
+ /*
+ * Allocate inode to quota.
+ */
+ dquot_initialize(inode);
+ rc = dquot_alloc_inode(inode);
+ if (rc)
+ goto fail_drop;
+
+ /* inherit flags from parent */
+ jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
+
+ if (S_ISDIR(mode)) {
+ jfs_inode->mode2 |= IDIRECTORY;
+ jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
+ }
+ else {
+ jfs_inode->mode2 |= INLINEEA | ISPARSE;
+ if (S_ISLNK(mode))
+ jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
+ }
+ jfs_inode->mode2 |= inode->i_mode;
+
+ inode->i_blocks = 0;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ jfs_inode->otime = inode->i_ctime.tv_sec;
+ inode->i_generation = JFS_SBI(sb)->gengen++;
+
+ jfs_inode->cflag = 0;
+
+ /* Zero remaining fields */
+ memset(&jfs_inode->acl, 0, sizeof(dxd_t));
+ memset(&jfs_inode->ea, 0, sizeof(dxd_t));
+ jfs_inode->next_index = 0;
+ jfs_inode->acltype = 0;
+ jfs_inode->btorder = 0;
+ jfs_inode->btindex = 0;
+ jfs_inode->bxflag = 0;
+ jfs_inode->blid = 0;
+ jfs_inode->atlhead = 0;
+ jfs_inode->atltail = 0;
+ jfs_inode->xtlid = 0;
+ jfs_set_inode_flags(inode);
+
+ jfs_info("ialloc returns inode = 0x%p\n", inode);
+
+ return inode;
+
+fail_drop:
+ dquot_drop(inode);
+ inode->i_flags |= S_NOQUOTA;
+ clear_nlink(inode);
+ unlock_new_inode(inode);
+fail_put:
+ iput(inode);
+fail:
+ return ERR_PTR(rc);
+}