예제 #1
0
static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	/*                                                                       
                                                      
                                   
                                                                                 
       */ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
		__le32 ea;
		if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
			ea = cpu_to_le32(i->i_uid);
			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
			hpfs_inode->i_ea_uid = 1;
		}
		if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
			ea = cpu_to_le32(i->i_gid);
			hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
			hpfs_inode->i_ea_gid = 1;
		}
		if (!S_ISLNK(i->i_mode))
			if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
			  && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
				ea = cpu_to_le32(i->i_mode);
				/*                 */
				hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
				hpfs_inode->i_ea_mode = 1;
			}
		if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
			ea = cpu_to_le32(new_encode_dev(i->i_rdev));
			hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
		}
	}
}
예제 #2
0
struct anode *hpfs_map_anode(struct super_block *s, anode_secno ano, struct buffer_head **bhp)
{
	struct anode *anode;
	if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ano, 1, "anode")) return NULL;
	if ((anode = hpfs_map_sector(s, ano, bhp, ANODE_RD_AHEAD)))
		if (hpfs_sb(s)->sb_chk) {
			if (le32_to_cpu(anode->magic) != ANODE_MAGIC) {
				hpfs_error(s, "bad magic on anode %08x", ano);
				goto bail;
			}
			if (le32_to_cpu(anode->self) != ano) {
				hpfs_error(s, "self pointer invalid on anode %08x", ano);
				goto bail;
			}
			if ((unsigned)anode->btree.n_used_nodes + (unsigned)anode->btree.n_free_nodes !=
			    (anode->btree.internal ? 60 : 40)) {
				hpfs_error(s, "bad number of nodes in anode %08x", ano);
				goto bail;
			}
			if (le16_to_cpu(anode->btree.first_free) !=
			    8 + anode->btree.n_used_nodes * (anode->btree.internal ? 8 : 12)) {
				hpfs_error(s, "bad first_free pointer in anode %08x", ano);
				goto bail;
			}
		}
	return anode;
	bail:
	brelse(*bhp);
	return NULL;
}
예제 #3
0
void hpfs_error(struct super_block *s, const char *fmt, ...)
{
	va_list args;

	va_start(args, fmt);
	vsnprintf(err_buf, sizeof(err_buf), fmt, args);
	va_end(args);

	printk("HPFS: filesystem error: %s", err_buf);
	if (!hpfs_sb(s)->sb_was_error) {
		if (hpfs_sb(s)->sb_err == 2) {
			printk("; crashing the system because you wanted it\n");
			mark_dirty(s, 0);
			panic("HPFS panic");
		} else if (hpfs_sb(s)->sb_err == 1) {
			if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
			else {
				printk("; remounting read-only\n");
				mark_dirty(s, 0);
				s->s_flags |= MS_RDONLY;
			}
		} else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
		else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
	} else printk("\n");
	hpfs_sb(s)->sb_was_error = 1;
}
예제 #4
0
파일: buffer.c 프로젝트: 19Dan01/linux
void hpfs_prefetch_sectors(struct super_block *s, unsigned secno, int n)
{
	struct buffer_head *bh;
	struct blk_plug plug;

	if (n <= 0 || unlikely(secno >= hpfs_sb(s)->sb_fs_size))
		return;

	bh = sb_find_get_block(s, secno);
	if (bh) {
		if (buffer_uptodate(bh)) {
			brelse(bh);
			return;
		}
		brelse(bh);
	};

	blk_start_plug(&plug);
	while (n > 0) {
		if (unlikely(secno >= hpfs_sb(s)->sb_fs_size))
			break;
		sb_breadahead(s, secno);
		secno++;
		n--;
	}
	blk_finish_plug(&plug);
}
예제 #5
0
파일: map.c 프로젝트: Chong-Li/cse522
void hpfs_load_hotfix_map(struct super_block *s, struct hpfs_spare_block *spareblock)
{
	struct quad_buffer_head qbh;
	u32 *directory;
	u32 n_hotfixes, n_used_hotfixes;
	unsigned i;

	n_hotfixes = le32_to_cpu(spareblock->n_spares);
	n_used_hotfixes = le32_to_cpu(spareblock->n_spares_used);

	if (n_hotfixes > 256 || n_used_hotfixes > n_hotfixes) {
		hpfs_error(s, "invalid number of hotfixes: %u, used: %u", n_hotfixes, n_used_hotfixes);
		return;
	}
	if (!(directory = hpfs_map_4sectors(s, le32_to_cpu(spareblock->hotfix_map), &qbh, 0))) {
		hpfs_error(s, "can't load hotfix map");
		return;
	}
	for (i = 0; i < n_used_hotfixes; i++) {
		hpfs_sb(s)->hotfix_from[i] = le32_to_cpu(directory[i]);
		hpfs_sb(s)->hotfix_to[i] = le32_to_cpu(directory[n_hotfixes + i]);
	}
	hpfs_sb(s)->n_hotfixes = n_used_hotfixes;
	hpfs_brelse4(&qbh);
}
예제 #6
0
void hpfs_init_inode(struct inode *i)
{
	struct super_block *sb = i->i_sb;
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);

	i->i_uid = hpfs_sb(sb)->sb_uid;
	i->i_gid = hpfs_sb(sb)->sb_gid;
	i->i_mode = hpfs_sb(sb)->sb_mode;
	i->i_size = -1;
	i->i_blocks = -1;
	
	hpfs_inode->i_dno = 0;
	hpfs_inode->i_n_secs = 0;
	hpfs_inode->i_file_sec = 0;
	hpfs_inode->i_disk_sec = 0;
	hpfs_inode->i_dpos = 0;
	hpfs_inode->i_dsubdno = 0;
	hpfs_inode->i_ea_mode = 0;
	hpfs_inode->i_ea_uid = 0;
	hpfs_inode->i_ea_gid = 0;
	hpfs_inode->i_ea_size = 0;

	hpfs_inode->i_rddir_off = NULL;
	hpfs_inode->i_dirty = 0;

	i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
	i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
	i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
}
예제 #7
0
파일: inode.c 프로젝트: 020gzh/linux
static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	/*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
		   Some unknown structures like ACL may be in fnode,
		   we'd better not overwrite them
		hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
		__le32 ea;
		if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
			ea = cpu_to_le32(i_uid_read(i));
			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
			hpfs_inode->i_ea_uid = 1;
		}
		if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
			ea = cpu_to_le32(i_gid_read(i));
			hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
			hpfs_inode->i_ea_gid = 1;
		}
		if (!S_ISLNK(i->i_mode))
			if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
			  && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
				ea = cpu_to_le32(i->i_mode);
				/* sick, but legal */
				hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
				hpfs_inode->i_ea_mode = 1;
			}
		if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
			ea = cpu_to_le32(new_encode_dev(i->i_rdev));
			hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
		}
	}
}
예제 #8
0
static unsigned count_bitmaps(struct super_block *s)
{
	unsigned n, count, n_bands;
	n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
	count = 0;
	for (n = 0; n < n_bands; n++)
		count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
	return count;
}
예제 #9
0
struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_head **bhp)
{
	struct fnode *fnode;
	if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ino, 1, "fnode")) {
		return NULL;
	}
	if ((fnode = hpfs_map_sector(s, ino, bhp, FNODE_RD_AHEAD))) {
		if (hpfs_sb(s)->sb_chk) {
			struct extended_attribute *ea;
			struct extended_attribute *ea_end;
			if (le32_to_cpu(fnode->magic) != FNODE_MAGIC) {
				hpfs_error(s, "bad magic on fnode %08lx",
					(unsigned long)ino);
				goto bail;
			}
			if (!fnode->dirflag) {
				if ((unsigned)fnode->btree.n_used_nodes + (unsigned)fnode->btree.n_free_nodes !=
				    (fnode->btree.internal ? 12 : 8)) {
					hpfs_error(s,
					   "bad number of nodes in fnode %08lx",
					    (unsigned long)ino);
					goto bail;
				}
				if (le16_to_cpu(fnode->btree.first_free) !=
				    8 + fnode->btree.n_used_nodes * (fnode->btree.internal ? 8 : 12)) {
					hpfs_error(s,
					    "bad first_free pointer in fnode %08lx",
					    (unsigned long)ino);
					goto bail;
				}
			}
			if (le16_to_cpu(fnode->ea_size_s) && (le16_to_cpu(fnode->ea_offs) < 0xc4 ||
			   le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200)) {
				hpfs_error(s,
					"bad EA info in fnode %08lx: ea_offs == %04x ea_size_s == %04x",
					(unsigned long)ino,
					le16_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s));
				goto bail;
			}
			ea = fnode_ea(fnode);
			ea_end = fnode_end_ea(fnode);
			while (ea != ea_end) {
				if (ea > ea_end) {
					hpfs_error(s, "bad EA in fnode %08lx",
						(unsigned long)ino);
					goto bail;
				}
				ea = next_ea(ea);
			}
		}
	}
	return fnode;
	bail:
	brelse(*bhp);
	return NULL;
}
예제 #10
0
static void unmark_dirty(struct super_block *s)
{
	struct buffer_head *bh;
	struct hpfs_spare_block *sb;
	if (s->s_flags & MS_RDONLY) return;
	if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
		sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
		sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
		mark_buffer_dirty(bh);
		brelse(bh);
	}
}
예제 #11
0
파일: map.c 프로젝트: Chong-Li/cse522
void hpfs_prefetch_bitmap(struct super_block *s, unsigned bmp_block)
{
	unsigned to_prefetch, next_prefetch;
	unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
	if (unlikely(bmp_block >= n_bands))
		return;
	to_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
	if (unlikely(bmp_block + 1 >= n_bands))
		next_prefetch = 0;
	else
		next_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block + 1]);
	hpfs_prefetch_sectors(s, to_prefetch, 4 + 4 * (to_prefetch + 4 == next_prefetch));
}
예제 #12
0
void hpfs_write_inode_nolock(struct inode *i)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	struct buffer_head *bh;
	struct fnode *fnode;
	struct quad_buffer_head qbh;
	struct hpfs_dirent *de;
	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
	if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
		if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
			brelse(bh);
			return;
		}
	} else de = NULL;
	if (S_ISREG(i->i_mode)) {
		fnode->file_size = cpu_to_le32(i->i_size);
		if (de) de->file_size = cpu_to_le32(i->i_size);
	} else if (S_ISDIR(i->i_mode)) {
		fnode->file_size = cpu_to_le32(0);
		if (de) de->file_size = cpu_to_le32(0);
	}
	hpfs_write_inode_ea(i, fnode);
	if (de) {
		de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
		de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
		de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
		de->read_only = !(i->i_mode & 0222);
		de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
		hpfs_mark_4buffers_dirty(&qbh);
		hpfs_brelse4(&qbh);
	}
	if (S_ISDIR(i->i_mode)) {
		if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
			de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
			de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
			de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
			de->read_only = !(i->i_mode & 0222);
			de->ea_size = cpu_to_le32(/*                     */0);
			de->file_size = cpu_to_le32(0);
			hpfs_mark_4buffers_dirty(&qbh);
			hpfs_brelse4(&qbh);
		} else
			hpfs_error(i->i_sb,
				"directory %08lx doesn't have '.' entry",
				(unsigned long)i->i_ino);
	}
	mark_buffer_dirty(bh);
	brelse(bh);
}
예제 #13
0
unsigned int *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
			 struct quad_buffer_head *qbh, char *id)
{
	secno sec;
	if (hpfs_sb(s)->sb_chk) if (bmp_block * 16384 > hpfs_sb(s)->sb_fs_size) {
		hpfs_error(s, "hpfs_map_bitmap called with bad parameter: %08x at %s", bmp_block, id);
		return NULL;
	}
	sec = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
	if (!sec || sec > hpfs_sb(s)->sb_fs_size-4) {
		hpfs_error(s, "invalid bitmap block pointer %08x -> %08x at %s", bmp_block, sec, id);
		return NULL;
	}
	return hpfs_map_4sectors(s, sec, qbh, 4);
}
예제 #14
0
static void hpfs_put_super(struct super_block *s)
{
	hpfs_lock(s);
	unmark_dirty(s);
	hpfs_unlock(s);
	call_rcu(&hpfs_sb(s)->rcu, lazy_free_sbi);
}
예제 #15
0
void hpfs_unlock_creation(struct super_block *s)
{
#ifdef DEBUG_LOCKS
	printk("unlock creation\n");
#endif
	up(&hpfs_sb(s)->hpfs_creation_de);
}
예제 #16
0
void hpfs_write_inode(struct inode *i)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	struct inode *parent;
	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
		if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n");
		kfree(hpfs_inode->i_rddir_off);
		hpfs_inode->i_rddir_off = NULL;
	}
	if (!i->i_nlink) {
		return;
	}
	parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
	if (parent) {
		hpfs_inode->i_dirty = 0;
		if (parent->i_state & I_NEW) {
			hpfs_init_inode(parent);
			hpfs_read_inode(parent);
			unlock_new_inode(parent);
		}
		hpfs_write_inode_nolock(i);
		iput(parent);
	}
}
예제 #17
0
int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
{
	struct inode *inode = dentry->d_inode;
	int error = -EINVAL;

	lock_kernel();
	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
		goto out_unlock;

	error = inode_change_ok(inode, attr);
	if (error)
		goto out_unlock;

	error = inode_setattr(inode, attr);
	if (error)
		goto out_unlock;

	hpfs_write_inode(inode);

 out_unlock:
	unlock_kernel();
	return error;
}
예제 #18
0
int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
		       unsigned char *n2, unsigned l2, int last)
{
	unsigned l = l1 < l2 ? l1 : l2;
	unsigned i;
	if (last) return -1;
	for (i = 0; i < l; i++) {
		unsigned char c1 = upcase(hpfs_sb(s)->sb_cp_table,n1[i]);
		unsigned char c2 = upcase(hpfs_sb(s)->sb_cp_table,n2[i]);
		if (c1 < c2) return -1;
		if (c1 > c2) return 1;
	}
	if (l1 < l2) return -1;
	if (l1 > l2) return 1;
	return 0;
}
예제 #19
0
int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
{
	struct inode *inode = dentry->d_inode;
	int error = -EINVAL;

	hpfs_lock(inode->i_sb);
	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_UID) && attr->ia_uid >= 0x10000)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_GID) && attr->ia_gid >= 0x10000)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
		goto out_unlock;

	error = inode_change_ok(inode, attr);
	if (error)
		goto out_unlock;

	if ((attr->ia_valid & ATTR_SIZE) &&
	    attr->ia_size != i_size_read(inode)) {
		error = vmtruncate(inode, attr->ia_size);
		if (error)
			goto out_unlock;
	}

	setattr_copy(inode, attr);

	hpfs_write_inode(inode);

 out_unlock:
	hpfs_unlock(inode->i_sb);
	return error;
}
예제 #20
0
static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
	struct super_block *s = dentry->d_sb;
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	u64 id = huge_encode_dev(s->s_bdev->bd_dev);
	hpfs_lock(s);

	/*if (sbi->sb_n_free == -1) {*/
		sbi->sb_n_free = count_bitmaps(s);
		sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
	/*}*/
	buf->f_type = s->s_magic;
	buf->f_bsize = 512;
	buf->f_blocks = sbi->sb_fs_size;
	buf->f_bfree = sbi->sb_n_free;
	buf->f_bavail = sbi->sb_n_free;
	buf->f_files = sbi->sb_dirband_size / 4;
	buf->f_ffree = sbi->sb_n_free_dnodes;
	buf->f_fsid.val[0] = (u32)id;
	buf->f_fsid.val[1] = (u32)(id >> 32);
	buf->f_namelen = 254;

	hpfs_unlock(s);

	return 0;
}
예제 #21
0
static unsigned count_bitmaps(struct super_block *s)
{
	unsigned n, count, n_bands;
	n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
	count = 0;
	for (n = 0; n < COUNT_RD_AHEAD; n++) {
		hpfs_prefetch_bitmap(s, n);
	}
	for (n = 0; n < n_bands; n++) {
		unsigned c;
		hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);
		c = hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
		if (c != (unsigned)-1)
			count += c;
	}
	return count;
}
예제 #22
0
static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
{
	uid_t uid;
	gid_t gid;
	umode_t umask;
	int lowercase, eas, chk, errs, chkdsk, timeshift;
	int o;
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	char *new_opts = kstrdup(data, GFP_KERNEL);
	
	sync_filesystem(s);

	*flags |= MS_NOATIME;
	
	hpfs_lock(s);
	lock_super(s);
	uid = sbi->sb_uid; gid = sbi->sb_gid;
	umask = 0777 & ~sbi->sb_mode;
	lowercase = sbi->sb_lowercase;
	eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
	errs = sbi->sb_err; timeshift = sbi->sb_timeshift;

	if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,
	    &eas, &chk, &errs, &chkdsk, &timeshift))) {
		printk("HPFS: bad mount options.\n");
		goto out_err;
	}
	if (o == 2) {
		hpfs_help();
		goto out_err;
	}
	if (timeshift != sbi->sb_timeshift) {
		printk("HPFS: timeshift can't be changed using remount.\n");
		goto out_err;
	}

	unmark_dirty(s);

	sbi->sb_uid = uid; sbi->sb_gid = gid;
	sbi->sb_mode = 0777 & ~umask;
	sbi->sb_lowercase = lowercase;
	sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
	sbi->sb_err = errs; sbi->sb_timeshift = timeshift;

	if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);

	replace_mount_options(s, new_opts);

	unlock_super(s);
	hpfs_unlock(s);
	return 0;

out_err:
	unlock_super(s);
	hpfs_unlock(s);
	kfree(new_opts);
	return -EINVAL;
}
예제 #23
0
static void hpfs_put_super(struct super_block *s)
{
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	kfree(sbi->sb_cp_table);
	kfree(sbi->sb_bmp_dir);
	unmark_dirty(s);
	s->s_fs_info = NULL;
	kfree(sbi);
}
예제 #24
0
파일: map.c 프로젝트: Chong-Li/cse522
__le32 *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
			 struct quad_buffer_head *qbh, char *id)
{
	secno sec;
	__le32 *ret;
	unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
	if (hpfs_sb(s)->sb_chk) if (bmp_block >= n_bands) {
		hpfs_error(s, "hpfs_map_bitmap called with bad parameter: %08x at %s", bmp_block, id);
		return NULL;
	}
	sec = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
	if (!sec || sec > hpfs_sb(s)->sb_fs_size-4) {
		hpfs_error(s, "invalid bitmap block pointer %08x -> %08x at %s", bmp_block, sec, id);
		return NULL;
	}
	ret = hpfs_map_4sectors(s, sec, qbh, 4);
	if (ret) hpfs_prefetch_bitmap(s, bmp_block + 1);
	return ret;
}
예제 #25
0
char *hpfs_translate_name(struct super_block *s, unsigned char *from,
			  unsigned len, int lc, int lng)
{
	char *to;
	int i;
	if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
		printk("HPFS: Long name flag mismatch - name ");
		for (i=0; i<len; i++) printk("%c", from[i]);
		printk(" misidentified as %s.\n", lng ? "short" : "long");
		printk("HPFS: It's nothing serious. It could happen because of bug in OS/2.\nHPFS: Set checks=normal to disable this message.\n");
	}
	if (!lc) return from;
	if (!(to = kmalloc(len, GFP_KERNEL))) {
		printk("HPFS: can't allocate memory for name conversion buffer\n");
		return from;
	}
	for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]);
	return to;
}
예제 #26
0
파일: buffer.c 프로젝트: 020gzh/linux
secno hpfs_search_hotfix_map(struct super_block *s, secno sec)
{
	unsigned i;
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
		if (sbi->hotfix_from[i] == sec) {
			return sbi->hotfix_to[i];
		}
	}
	return sec;
}
예제 #27
0
unsigned hpfs_get_free_dnodes(struct super_block *s)
{
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	if (sbi->sb_n_free_dnodes == (unsigned)-1) {
		unsigned c = hpfs_count_one_bitmap(s, sbi->sb_dmap);
		if (c == (unsigned)-1)
			return 0;
		sbi->sb_n_free_dnodes = c;
	}
	return sbi->sb_n_free_dnodes;
}
예제 #28
0
파일: buffer.c 프로젝트: 020gzh/linux
unsigned hpfs_search_hotfix_map_for_range(struct super_block *s, secno sec, unsigned n)
{
	unsigned i;
	struct hpfs_sb_info *sbi = hpfs_sb(s);
	for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
		if (sbi->hotfix_from[i] >= sec && sbi->hotfix_from[i] < sec + n) {
			n = sbi->hotfix_from[i] - sec;
		}
	}
	return n;
}
예제 #29
0
static void mark_dirty(struct super_block *s)
{
	if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
		struct buffer_head *bh;
		struct hpfs_spare_block *sb;
		if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
			sb->dirty = 1;
			sb->old_wrote = 0;
			mark_buffer_dirty(bh);
			brelse(bh);
		}
	}
}
예제 #30
0
int hpfs_notify_change(struct dentry *dentry, struct iattr *attr)
{
	struct inode *inode = dentry->d_inode;
	int error=0;
	lock_kernel();
	if ( ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) ||
	     (hpfs_sb(inode->i_sb)->sb_root == inode->i_ino) ) {
		error = -EINVAL;
	} else if ((error = inode_change_ok(inode, attr))) {
	} else if ((error = inode_setattr(inode, attr))) {
	} else {
		hpfs_write_inode(inode);
	}
	unlock_kernel();
	return error;
}