e2fsprogs/lib/ext2fs/newdir.c

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/*
* newdir.c --- create a new directory block
*
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* Copyright (C) 1994, 1995 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
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*/
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
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#include <unistd.h>
#endif
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Many files: inode.c (ext2fs_open_inode_scan): Initialize the group variables so that we don't need to call get_next_blockgroup() the first time around. Saves a bit of time, and prevents us from needing to assign -1 to current_group (which is an unsigned value). icount.c (insert_icount_el): Cast the estimated number of inodes from a float to an ino_t. alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c, bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c, check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c, ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c, icount.c, initialize.c, inline.c, inode.c, irel_ma.c, ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c, newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c, rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c, tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c, version.c: If EXT2_FLAT_INCLUDES is defined, then assume all of the ext2-specific header files are in a flat directory. block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast all assignments from void * to be compatible with C++. closefs.c (ext2fs_flush): Add a call to io_channel_flush() to make sure the contents of the disk are flushed to disk. dblist.c (ext2fs_add_dir_block): Change new to be new_entry to avoid C++ namespace clash. bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to avoid C++ namespace clash. ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c, irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c, ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c, unlink.c: Change private to be priv_data (to avoid C++ namespace clash)
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#if EXT2_FLAT_INCLUDES
#include "ext2_fs.h"
#else
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#include <linux/ext2_fs.h>
Many files: inode.c (ext2fs_open_inode_scan): Initialize the group variables so that we don't need to call get_next_blockgroup() the first time around. Saves a bit of time, and prevents us from needing to assign -1 to current_group (which is an unsigned value). icount.c (insert_icount_el): Cast the estimated number of inodes from a float to an ino_t. alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c, bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c, check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c, ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c, icount.c, initialize.c, inline.c, inode.c, irel_ma.c, ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c, newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c, rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c, tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c, version.c: If EXT2_FLAT_INCLUDES is defined, then assume all of the ext2-specific header files are in a flat directory. block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast all assignments from void * to be compatible with C++. closefs.c (ext2fs_flush): Add a call to io_channel_flush() to make sure the contents of the disk are flushed to disk. dblist.c (ext2fs_add_dir_block): Change new to be new_entry to avoid C++ namespace clash. bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to avoid C++ namespace clash. ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c, irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c, ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c, unlink.c: Change private to be priv_data (to avoid C++ namespace clash)
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#endif
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#include "ext2fs.h"
#ifndef EXT2_FT_DIR
#define EXT2_FT_DIR 2
#endif
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/*
* Create new directory block
*/
errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino,
char **block)
{
struct ext2_dir_entry *dir = NULL;
errcode_t retval;
char *buf;
int rec_len;
int filetype = 0;
struct ext2fs_sb *sb;
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EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
retval = ext2fs_get_mem(fs->blocksize, (void **) &buf);
if (retval)
return retval;
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memset(buf, 0, fs->blocksize);
dir = (struct ext2_dir_entry *) buf;
dir->rec_len = fs->blocksize;
if (dir_ino) {
sb = (struct ext2fs_sb *) fs->super;
if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
filetype = EXT2_FT_DIR << 8;
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/*
* Set up entry for '.'
*/
dir->inode = dir_ino;
dir->name_len = 1 | filetype;
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dir->name[0] = '.';
rec_len = dir->rec_len - EXT2_DIR_REC_LEN(1);
dir->rec_len = EXT2_DIR_REC_LEN(1);
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/*
* Set up entry for '..'
*/
dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
dir->rec_len = rec_len;
dir->inode = parent_ino;
dir->name_len = 2 | filetype;
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dir->name[0] = '.';
dir->name[1] = '.';
}
*block = buf;
return 0;
}