1997-04-26 17:21:57 +04:00
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/*
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* mkdir.c --- make a directory in the filesystem
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*
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1997-04-29 20:17:09 +04:00
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* Copyright (C) 1994, 1995 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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1997-04-26 17:21:57 +04:00
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*/
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#include <stdio.h>
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#include <string.h>
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1997-08-11 03:07:40 +04:00
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#if HAVE_UNISTD_H
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1997-04-26 17:21:57 +04:00
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#include <unistd.h>
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1997-08-11 03:07:40 +04:00
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#endif
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1997-04-26 17:21:57 +04:00
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#include <fcntl.h>
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#include <time.h>
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1997-10-20 03:00:21 +04:00
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#if HAVE_SYS_STAT_H
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1997-04-26 17:21:57 +04:00
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#include <sys/stat.h>
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1997-10-20 03:00:21 +04:00
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#endif
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#if HAVE_SYS_TYPES_H
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1997-04-26 17:21:57 +04:00
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#include <sys/types.h>
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1997-10-20 03:00:21 +04:00
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#endif
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1997-04-26 17:21:57 +04:00
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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)
1998-01-19 17:47:53 +03:00
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#if EXT2_FLAT_INCLUDES
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#include "ext2_fs.h"
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#else
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1997-04-26 17:21:57 +04:00
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#include <linux/ext2_fs.h>
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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)
1998-01-19 17:47:53 +03:00
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#endif
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1997-04-26 17:21:57 +04:00
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#include "ext2fs.h"
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errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
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const char *name)
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{
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errcode_t retval;
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struct ext2_inode inode;
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ino_t ino = inum;
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ino_t scratch_ino;
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blk_t blk;
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char *block = 0;
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int group;
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1997-04-26 17:34:30 +04:00
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EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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1997-04-26 17:21:57 +04:00
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/*
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* Allocate an inode, if necessary
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*/
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if (!ino) {
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1997-04-26 17:58:21 +04:00
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retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
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0, &ino);
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1997-04-26 17:21:57 +04:00
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if (retval)
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goto cleanup;
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}
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/*
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* Allocate a data block for the directory
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*/
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retval = ext2fs_new_block(fs, 0, 0, &blk);
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if (retval)
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goto cleanup;
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/*
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* Create a scratch template for the directory
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*/
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retval = ext2fs_new_dir_block(fs, ino, parent, &block);
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if (retval)
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goto cleanup;
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/*
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* Create the inode structure....
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*/
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memset(&inode, 0, sizeof(struct ext2_inode));
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1997-04-26 17:58:21 +04:00
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inode.i_mode = LINUX_S_IFDIR | 0755;
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1997-04-26 17:21:57 +04:00
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inode.i_uid = inode.i_gid = 0;
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inode.i_blocks = fs->blocksize / 512;
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inode.i_block[0] = blk;
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inode.i_links_count = 2;
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inode.i_ctime = inode.i_atime = inode.i_mtime = time(NULL);
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inode.i_size = fs->blocksize;
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/*
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* Write out the inode and inode data block
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*/
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1997-04-26 17:58:21 +04:00
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retval = ext2fs_write_dir_block(fs, blk, block);
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1997-04-26 17:21:57 +04:00
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if (retval)
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goto cleanup;
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retval = ext2fs_write_inode(fs, ino, &inode);
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if (retval)
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goto cleanup;
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/*
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* Update parent inode's counts
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*/
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if (parent != ino) {
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retval = ext2fs_read_inode(fs, parent, &inode);
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if (retval)
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goto cleanup;
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inode.i_links_count++;
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retval = ext2fs_write_inode(fs, parent, &inode);
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if (retval)
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goto cleanup;
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}
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/*
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* Link the directory into the filesystem hierarchy
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*/
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if (name) {
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retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
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&scratch_ino);
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if (!retval) {
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1997-10-31 09:07:47 +03:00
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retval = EXT2_ET_DIR_EXISTS;
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1997-04-26 17:21:57 +04:00
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name = 0;
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goto cleanup;
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}
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1997-10-31 09:07:47 +03:00
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if (retval != EXT2_ET_FILE_NOT_FOUND)
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1997-04-26 17:21:57 +04:00
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goto cleanup;
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retval = ext2fs_link(fs, parent, name, ino, 0);
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if (retval)
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goto cleanup;
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}
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/*
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* Update accounting....
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*/
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1997-04-26 17:34:30 +04:00
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ext2fs_mark_block_bitmap(fs->block_map, blk);
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1997-04-26 17:21:57 +04:00
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ext2fs_mark_bb_dirty(fs);
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1997-04-26 17:34:30 +04:00
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ext2fs_mark_inode_bitmap(fs->inode_map, ino);
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1997-04-26 17:21:57 +04:00
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ext2fs_mark_ib_dirty(fs);
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group = ext2fs_group_of_blk(fs, blk);
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fs->group_desc[group].bg_free_blocks_count--;
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group = ext2fs_group_of_ino(fs, ino);
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fs->group_desc[group].bg_free_inodes_count--;
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fs->group_desc[group].bg_used_dirs_count++;
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fs->super->s_free_blocks_count--;
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fs->super->s_free_inodes_count--;
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ext2fs_mark_super_dirty(fs);
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cleanup:
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if (block)
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1997-10-26 06:41:24 +03:00
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ext2fs_free_mem((void **) &block);
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1997-04-26 17:21:57 +04:00
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return retval;
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}
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