init android origin source code

1 files changed, 133 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/fs/udf/ialloc.c b/ANDROID_3.4.5/fs/udf/ialloc.c
new file mode 100644
index 00000000..7e5aae4b
--- /dev/null
+++ b/ANDROID_3.4.5/fs/udf/ialloc.c
@@ -0,0 +1,133 @@
+/*
+ * ialloc.c
+ *
+ * PURPOSE
+ *	Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
+ *
+ * COPYRIGHT
+ *	This file is distributed under the terms of the GNU General Public
+ *	License (GPL). Copies of the GPL can be obtained from:
+ *		ftp://prep.ai.mit.edu/pub/gnu/GPL
+ *	Each contributing author retains all rights to their own work.
+ *
+ *  (C) 1998-2001 Ben Fennema
+ *
+ * HISTORY
+ *
+ *  02/24/99 blf  Created.
+ *
+ */
+
+#include "udfdecl.h"
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#include "udf_i.h"
+#include "udf_sb.h"
+
+void udf_free_inode(struct inode *inode)
+{
+	struct super_block *sb = inode->i_sb;
+	struct udf_sb_info *sbi = UDF_SB(sb);
+
+	mutex_lock(&sbi->s_alloc_mutex);
+	if (sbi->s_lvid_bh) {
+		struct logicalVolIntegrityDescImpUse *lvidiu =
+							udf_sb_lvidiu(sbi);
+		if (S_ISDIR(inode->i_mode))
+			le32_add_cpu(&lvidiu->numDirs, -1);
+		else
+			le32_add_cpu(&lvidiu->numFiles, -1);
+		udf_updated_lvid(sb);
+	}
+	mutex_unlock(&sbi->s_alloc_mutex);
+
+	udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);
+}
+
+struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err)
+{
+	struct super_block *sb = dir->i_sb;
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	struct inode *inode;
+	int block;
+	uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
+	struct udf_inode_info *iinfo;
+	struct udf_inode_info *dinfo = UDF_I(dir);
+
+	inode = new_inode(sb);
+
+	if (!inode) {
+		*err = -ENOMEM;
+		return NULL;
+	}
+	*err = -ENOSPC;
+
+	iinfo = UDF_I(inode);
+	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
+		iinfo->i_efe = 1;
+		if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
+			sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
+		iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
+					    sizeof(struct extendedFileEntry),
+					    GFP_KERNEL);
+	} else {
+		iinfo->i_efe = 0;
+		iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
+					    sizeof(struct fileEntry),
+					    GFP_KERNEL);
+	}
+	if (!iinfo->i_ext.i_data) {
+		iput(inode);
+		*err = -ENOMEM;
+		return NULL;
+	}
+
+	block = udf_new_block(dir->i_sb, NULL,
+			      dinfo->i_location.partitionReferenceNum,
+			      start, err);
+	if (*err) {
+		iput(inode);
+		return NULL;
+	}
+
+	if (sbi->s_lvid_bh) {
+		struct logicalVolIntegrityDescImpUse *lvidiu;
+
+		iinfo->i_unique = lvid_get_unique_id(sb);
+		mutex_lock(&sbi->s_alloc_mutex);
+		lvidiu = udf_sb_lvidiu(sbi);
+		if (S_ISDIR(mode))
+			le32_add_cpu(&lvidiu->numDirs, 1);
+		else
+			le32_add_cpu(&lvidiu->numFiles, 1);
+		udf_updated_lvid(sb);
+		mutex_unlock(&sbi->s_alloc_mutex);
+	}
+
+	inode_init_owner(inode, dir, mode);
+
+	iinfo->i_location.logicalBlockNum = block;
+	iinfo->i_location.partitionReferenceNum =
+				dinfo->i_location.partitionReferenceNum;
+	inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
+	inode->i_blocks = 0;
+	iinfo->i_lenEAttr = 0;
+	iinfo->i_lenAlloc = 0;
+	iinfo->i_use = 0;
+	iinfo->i_checkpoint = 1;
+	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
+		iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
+	else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
+		iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
+	else
+		iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
+	inode->i_mtime = inode->i_atime = inode->i_ctime =
+		iinfo->i_crtime = current_fs_time(inode->i_sb);
+	insert_inode_hash(inode);
+	mark_inode_dirty(inode);
+
+	*err = 0;
+	return inode;
+}