1 files changed, 0 insertions, 446 deletions

diff --git a/fs/umsdos/ioctl.c b/fs/umsdos/ioctl.c
deleted file mode 100644
index fc300030afd1..000000000000
--- a/fs/umsdos/ioctl.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- *  linux/fs/umsdos/ioctl.c
- *
- *  Written 1993 by Jacques Gelinas
- *
- *  Extended MS-DOS ioctl directory handling functions
- *
- *  Changes:
- *  11/07/2003      Daniele Bellucci <bellucda@tiscali.it>
- *                  - audit copy_to_user/put_user in umsdos_ioctl_fill.
- */
-
-#include <asm/uaccess.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/fs.h>
-#include <linux/msdos_fs.h>
-#include <linux/umsdos_fs.h>
-
-struct UMSDOS_DIR_ONCE {
-	struct dirent *ent;
-	int count;
-};
-
-/*
- * Record a single entry the first call.
- * Return -EINVAL the next one.
- */
-static int umsdos_ioctl_fill (
-				     void *buf,
-				     const char *name,
-				     int name_len,
-				     loff_t offset,
-				     ino_t ino,
-				     unsigned type)
-{
-	int ret = -EINVAL;
-	struct UMSDOS_DIR_ONCE *d = (struct UMSDOS_DIR_ONCE *) buf;
-
-	if (d->count == 0) {
-		if (copy_to_user (d->ent->d_name, name, name_len) ||
-		    put_user ('\0', d->ent->d_name + name_len) ||
-		    put_user (name_len, &d->ent->d_reclen) ||
-		    put_user (ino, &d->ent->d_ino) ||
-		    put_user (offset, &d->ent->d_off))
-			return -EFAULT;
-		d->count = 1;
-		ret = 0;
-	}
-	return ret;
-}
-
-
-/*
- * Perform special function on a directory
- */
-/* #Specification: ioctl / prototypes
- * The official prototype for the umsdos ioctl on directory
- * is:
- * 
- * int ioctl (
- * int fd,          // File handle of the directory
- * int cmd, // command
- * struct umsdos_ioctl *data)
- * 
- * The struct and the commands are defined in linux/umsdos_fs.h.
- * 
- * umsdos_progs/umsdosio.c provide an interface in C++ to all
- * these ioctl. umsdos_progs/udosctl is a small utility showing
- * all this.
- * 
- * These ioctl generally allow one to work on the EMD or the
- * DOS directory independently. These are essential to implement
- * the synchronise.
- */
-int UMSDOS_ioctl_dir(struct inode *dir, struct file *filp, unsigned int cmd,
-			unsigned long data_ptr)
-{
-	struct dentry *dentry = filp->f_dentry;
-	struct umsdos_ioctl *idata = (struct umsdos_ioctl *) data_ptr;
-	int ret;
-	struct umsdos_ioctl data;
-
-Printk(("UMSDOS_ioctl_dir: %s/%s, cmd=%d, data=%08lx\n",
-dentry->d_parent->d_name.name, dentry->d_name.name, cmd, data_ptr));
-
-	/* forward non-umsdos ioctls - this hopefully doesn't cause conflicts */
-	if (cmd != UMSDOS_GETVERSION
-	    && cmd != UMSDOS_READDIR_DOS
-	    && cmd != UMSDOS_READDIR_EMD
-	    && cmd != UMSDOS_INIT_EMD
-	    && cmd != UMSDOS_CREAT_EMD
-	    && cmd != UMSDOS_RENAME_DOS
-	    && cmd != UMSDOS_UNLINK_EMD
-	    && cmd != UMSDOS_UNLINK_DOS
-	    && cmd != UMSDOS_RMDIR_DOS
-	    && cmd != UMSDOS_STAT_DOS
-	    && cmd != UMSDOS_DOS_SETUP)
-		return fat_dir_ioctl (dir, filp, cmd, data_ptr);
-
-	/* #Specification: ioctl / access
-	 * Only root (effective id) is allowed to do IOCTL on directory
-	 * in UMSDOS. EPERM is returned for other user.
-	 */
-	/*
-	 * Well, not all cases require write access, but it simplifies
-	 * the code, and let's face it, there is only one client (umssync)
-	 * for all this.
-	 */
-	ret = verify_area (VERIFY_WRITE, (void *) data_ptr, 
-				sizeof (struct umsdos_ioctl));
-	if (ret < 0)
-		goto out;
-
-	ret = -EPERM;
-	if (current->euid != 0 && cmd != UMSDOS_GETVERSION)
-		goto out;
-
-	ret = -EINVAL;
-	if (cmd == UMSDOS_GETVERSION) {
-		/* #Specification: ioctl / UMSDOS_GETVERSION
-		 * The field version and release of the structure
-		 * umsdos_ioctl are filled with the version and release
-		 * number of the fs code in the kernel. This will allow
-		 * some form of checking. Users won't be able to run
-		 * incompatible utility such as the synchroniser (umssync).
-		 * umsdos_progs/umsdosio.c enforce this checking.
-		 * 
-		 * Return always 0.
-		 */
-		put_user (UMSDOS_VERSION, &idata->version);
-		put_user (UMSDOS_RELEASE, &idata->release);
-		ret = 0;
-		goto out;
-	}
-	if (cmd == UMSDOS_READDIR_DOS) {
-		/* #Specification: ioctl / UMSDOS_READDIR_DOS
-		 * One entry is read from the DOS directory at the current
-		 * file position. The entry is put as is in the dos_dirent
-		 * field of struct umsdos_ioctl.
-		 * 
-		 * Return > 0 if success.
-		 */
-		struct UMSDOS_DIR_ONCE bufk;
-
-		bufk.count = 0;
-		bufk.ent = &idata->dos_dirent;
-
-		fat_readdir (filp, &bufk, umsdos_ioctl_fill);
-
-		ret = bufk.count == 1 ? 1 : 0;
-		goto out;
-	}
-	if (cmd == UMSDOS_READDIR_EMD) {
-		/* #Specification: ioctl / UMSDOS_READDIR_EMD
-		 * One entry is read from the EMD at the current
-		 * file position. The entry is put as is in the umsdos_dirent
-		 * field of struct umsdos_ioctl. The corresponding mangled
-		 * DOS entry name is put in the dos_dirent field.
-		 * 
-		 * All entries are read including hidden links. Blank
-		 * entries are skipped.
-		 * 
-		 * Return > 0 if success.
-		 */
-		struct dentry *demd;
-		loff_t pos = filp->f_pos;
-
-		/* The absence of the EMD is simply seen as an EOF */
-		demd = umsdos_get_emd_dentry(dentry);
-		ret = PTR_ERR(demd);
-		if (IS_ERR(demd))
-			goto out;
-		ret = 0;
-		if (!demd->d_inode)
-			goto read_dput;
-
-		while (pos < demd->d_inode->i_size) {
-			off_t f_pos = pos;
-			struct umsdos_dirent entry;
-			struct umsdos_info info;
-
-			ret = umsdos_emd_dir_readentry (demd, &pos, &entry);
-
-			if (ret == -ENAMETOOLONG) {
-				printk (KERN_INFO "Fixing EMD entry with invalid size -- zeroing out\n");
-				memset (&info, 0, sizeof (info));
-				info.f_pos = f_pos;
-				info.recsize = UMSDOS_REC_SIZE;
-				ret = umsdos_writeentry (dentry, &info, 1);
-				continue;
-			}
-
-			if (ret)
-				break;
-			if (entry.name_len <= 0)
-				continue;
-
-			umsdos_parse (entry.name, entry.name_len, &info);
-			info.f_pos = f_pos;
-			umsdos_manglename (&info);
-			ret = -EFAULT;
-			if (copy_to_user (&idata->umsdos_dirent, &entry,
-							sizeof (entry)))
-				break;
-			if (copy_to_user (&idata->dos_dirent.d_name,
-							info.fake.fname,
-				 			info.fake.len + 1))
-				break;
-			ret = entry.name_len;
-			break;
-		}
-		/* update the original f_pos */
-		filp->f_pos = pos;
-	read_dput:
-		d_drop(demd);
-		dput(demd);
-		goto out;
-	}
-	if (cmd == UMSDOS_INIT_EMD) {
-		/* #Specification: ioctl / UMSDOS_INIT_EMD
-		 * The UMSDOS_INIT_EMD command makes sure the EMD
-		 * exists for a directory. If it does not, it is
-		 * created. Also, it makes sure the directory function
-		 * table (struct inode_operations) is set to the UMSDOS
-		 * semantic. This mean that umssync may be applied to
-		 * an "opened" msdos directory, and it will change behavior
-		 * on the fly.
-		 * 
-		 * Return 0 if success.
-		 */
-
-		ret = umsdos_make_emd(dentry);
-Printk(("UMSDOS_ioctl_dir: INIT_EMD %s/%s, ret=%d\n",
-dentry->d_parent->d_name.name, dentry->d_name.name, ret));
-		umsdos_setup_dir (dentry);
-		goto out;
-	}
-
-	ret = -EFAULT;
-	if (copy_from_user (&data, idata, sizeof (data)))
-		goto out;
-
-	if (cmd == UMSDOS_CREAT_EMD) {
-		/* #Specification: ioctl / UMSDOS_CREAT_EMD
-		 * The umsdos_dirent field of the struct umsdos_ioctl is used
-		 * as is to create a new entry in the EMD of the directory.
-		 * The DOS directory is not modified.
-		 * No validation is done (yet).
-		 * 
-		 * Return 0 if success.
-		 */
-		struct umsdos_info info;
-
-		/* This makes sure info.entry and info in general
-		 * is correctly initialised
-		 */
-		memcpy (&info.entry, &data.umsdos_dirent,
-			sizeof (data.umsdos_dirent));
-		umsdos_parse (data.umsdos_dirent.name
-		    ,data.umsdos_dirent.name_len, &info);
-		ret = umsdos_newentry (dentry, &info);
-		goto out;
-	}
-	else if (cmd == UMSDOS_RENAME_DOS) {
-		struct dentry *old_dentry, *new_dentry;		/* FIXME */
-
-		/* #Specification: ioctl / UMSDOS_RENAME_DOS
-		 * A file or directory is renamed in a DOS directory
-		 * (not moved across directory). The source name
-		 * is in the dos_dirent.name field and the destination
-		 * is in umsdos_dirent.name field.
-		 * 
-		 * This ioctl allows umssync to rename a mangled file
-		 * name before syncing it back in the EMD.
-		 */
-		old_dentry = umsdos_lookup_dentry (dentry, 
-						data.dos_dirent.d_name,
-						data.dos_dirent.d_reclen ,1);
-		ret = PTR_ERR(old_dentry);
-		if (IS_ERR(old_dentry))
-			goto out;
-		new_dentry = umsdos_lookup_dentry (dentry,
-						data.umsdos_dirent.name,
-						data.umsdos_dirent.name_len, 1);
-		ret = PTR_ERR(new_dentry);
-		if (!IS_ERR(new_dentry)) {
-printk("umsdos_ioctl: renaming %s/%s to %s/%s\n",
-old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
-new_dentry->d_parent->d_name.name, new_dentry->d_name.name);
-			ret = msdos_rename (dir, old_dentry, dir, new_dentry);
-			d_drop(new_dentry);
-			d_drop(old_dentry);
-			dput(new_dentry);
-		}
-		dput(old_dentry);
-		goto out;
-	}
-	else if (cmd == UMSDOS_UNLINK_EMD) {
-		/* #Specification: ioctl / UMSDOS_UNLINK_EMD
-		 * The umsdos_dirent field of the struct umsdos_ioctl is used
-		 * as is to remove an entry from the EMD of the directory.
-		 * No validation is done (yet). The mode field is used
-		 * to validate S_ISDIR or S_ISREG.
-		 * 
-		 * Return 0 if success.
-		 */
-		struct umsdos_info info;
-
-		/* This makes sure info.entry and info in general
-		 * is correctly initialised
-		 */
-		memcpy (&info.entry, &data.umsdos_dirent,
-			sizeof (data.umsdos_dirent));
-		umsdos_parse (data.umsdos_dirent.name,
-				data.umsdos_dirent.name_len, &info);
-		ret = umsdos_delentry (dentry, &info,
-				S_ISDIR (data.umsdos_dirent.mode));
-		if (ret) {
-			printk(KERN_WARNING
-				"umsdos_ioctl: delentry %s/%s failed, ret=%d\n",
-				dentry->d_name.name, info.entry.name, ret);
-		}
-		goto out;
-	}
-	else if (cmd == UMSDOS_UNLINK_DOS) {
-		struct dentry *temp;
-
-		/* #Specification: ioctl / UMSDOS_UNLINK_DOS
-		 * The dos_dirent field of the struct umsdos_ioctl is used to
-		 * execute a msdos_unlink operation. The d_name and d_reclen
-		 * fields are used.
-		 * 
-		 * Return 0 if success.
-		 */
-		temp = umsdos_lookup_dentry(dentry, data.dos_dirent.d_name,
-						data.dos_dirent.d_reclen, 1);
-		ret = PTR_ERR(temp);
-		if (IS_ERR(temp))
-			goto out;
-		ret = -ENOENT;
-		if (temp->d_inode) {
-			ret = -EISDIR;
-			if (!S_ISDIR(temp->d_inode->i_mode))
-				ret = msdos_unlink (dir, temp);
-			if (!ret)
-				d_delete(temp);
-		}
-		dput (temp);
-		goto out;
-	}
-	else if (cmd == UMSDOS_RMDIR_DOS) {
-		struct dentry *temp;
-
-		/* #Specification: ioctl / UMSDOS_RMDIR_DOS
-		 * The dos_dirent field of the struct umsdos_ioctl is used to
-		 * execute a msdos_rmdir operation. The d_name and d_reclen
-		 * fields are used.
-		 * 
-		 * Return 0 if success.
-		 */
-		temp = umsdos_lookup_dentry(dentry, data.dos_dirent.d_name,
-					    data.dos_dirent.d_reclen, 1);
-		ret = PTR_ERR(temp);
-		if (IS_ERR(temp))
-			goto out;
-		ret = -ENOENT;
-		if (temp->d_inode) {
-			ret = -ENOTDIR;
-			if (S_ISDIR(temp->d_inode->i_mode))
-				ret = msdos_rmdir (dir, temp);
-			if (!ret)
-				d_delete(temp);
-		}
-		dput (temp);
-		goto out;
-
-	} else if (cmd == UMSDOS_STAT_DOS) {
-		/* #Specification: ioctl / UMSDOS_STAT_DOS
-		 * The dos_dirent field of the struct umsdos_ioctl is
-		 * used to execute a stat operation in the DOS directory.
-		 * The d_name and d_reclen fields are used.
-		 * 
-		 * The following field of umsdos_ioctl.stat are filled.
-		 * 
-		 * st_ino,st_mode,st_size,st_atime,st_mtime,st_ctime,
-		 * Return 0 if success.
-		 */
-		struct dentry *dret;
-		struct inode *inode;
-
-		dret = umsdos_lookup_dentry(dentry, data.dos_dirent.d_name,
-					    data.dos_dirent.d_reclen, 1);
-		ret = PTR_ERR(dret);
-		if (IS_ERR(dret))
-			goto out;
-		ret = -ENOENT;
-		inode = dret->d_inode;
-		if (inode) {
-			data.stat.st_ino = inode->i_ino;
-			data.stat.st_mode = inode->i_mode;
-			data.stat.st_size = inode->i_size;
-			data.stat.st_atime = inode->i_atime;
-			data.stat.st_ctime = inode->i_ctime;
-			data.stat.st_mtime = inode->i_mtime;
-			ret = -EFAULT;
-			if (!copy_to_user (&idata->stat, &data.stat, 
-						sizeof (data.stat)))
-				ret = 0;
-		}
-		dput(dret);
-		goto out;
-	}
-	else if (cmd == UMSDOS_DOS_SETUP) {
-		/* #Specification: ioctl / UMSDOS_DOS_SETUP
-		 * The UMSDOS_DOS_SETUP ioctl allow changing the
-		 * default permission of the MS-DOS filesystem driver
-		 * on the fly.  The MS-DOS driver applies global permissions
-		 * to every file and directory. Normally these permissions
-		 * are controlled by a mount option. This is not
-		 * available for root partition, so a special utility
-		 * (umssetup) is provided to do this, normally in
-		 * /etc/rc.local.
-		 * 
-		 * Be aware that this applies ONLY to MS-DOS directories
-		 * (those without EMD --linux-.---). Umsdos directory
-		 * have independent (standard) permission for each
-		 * and every file.
-		 * 
-		 * The field umsdos_dirent provide the information needed.
-		 * umsdos_dirent.uid and gid sets the owner and group.
-		 * umsdos_dirent.mode set the permissions flags.
-		 */
-		dir->i_sb->u.msdos_sb.options.fs_uid = data.umsdos_dirent.uid;
-		dir->i_sb->u.msdos_sb.options.fs_gid = data.umsdos_dirent.gid;
-		dir->i_sb->u.msdos_sb.options.fs_fmask =
-			dir->i_sb->u.msdos_sb.options.fs_dmask =
-				data.umsdos_dirent.mode;
-		ret = 0;
-	}
-out:
-	Printk (("ioctl %d, returning %d\n", cmd, ret));
-	return ret;
-}