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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/ubifs/ioctl.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/ubifs/ioctl.c')
-rw-r--r--ANDROID_3.4.5/fs/ubifs/ioctl.c205
1 files changed, 0 insertions, 205 deletions
diff --git a/ANDROID_3.4.5/fs/ubifs/ioctl.c b/ANDROID_3.4.5/fs/ubifs/ioctl.c
deleted file mode 100644
index 1a7e2d8b..00000000
--- a/ANDROID_3.4.5/fs/ubifs/ioctl.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- * This file is part of UBIFS.
- *
- * Copyright (C) 2006-2008 Nokia Corporation.
- * Copyright (C) 2006, 2007 University of Szeged, Hungary
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors: Zoltan Sogor
- * Artem Bityutskiy (Битюцкий Артём)
- * Adrian Hunter
- */
-
-/* This file implements EXT2-compatible extended attribute ioctl() calls */
-
-#include <linux/compat.h>
-#include <linux/mount.h>
-#include "ubifs.h"
-
-/**
- * ubifs_set_inode_flags - set VFS inode flags.
- * @inode: VFS inode to set flags for
- *
- * This function propagates flags from UBIFS inode object to VFS inode object.
- */
-void ubifs_set_inode_flags(struct inode *inode)
-{
- unsigned int flags = ubifs_inode(inode)->flags;
-
- inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_DIRSYNC);
- if (flags & UBIFS_SYNC_FL)
- inode->i_flags |= S_SYNC;
- if (flags & UBIFS_APPEND_FL)
- inode->i_flags |= S_APPEND;
- if (flags & UBIFS_IMMUTABLE_FL)
- inode->i_flags |= S_IMMUTABLE;
- if (flags & UBIFS_DIRSYNC_FL)
- inode->i_flags |= S_DIRSYNC;
-}
-
-/*
- * ioctl2ubifs - convert ioctl inode flags to UBIFS inode flags.
- * @ioctl_flags: flags to convert
- *
- * This function convert ioctl flags (@FS_COMPR_FL, etc) to UBIFS inode flags
- * (@UBIFS_COMPR_FL, etc).
- */
-static int ioctl2ubifs(int ioctl_flags)
-{
- int ubifs_flags = 0;
-
- if (ioctl_flags & FS_COMPR_FL)
- ubifs_flags |= UBIFS_COMPR_FL;
- if (ioctl_flags & FS_SYNC_FL)
- ubifs_flags |= UBIFS_SYNC_FL;
- if (ioctl_flags & FS_APPEND_FL)
- ubifs_flags |= UBIFS_APPEND_FL;
- if (ioctl_flags & FS_IMMUTABLE_FL)
- ubifs_flags |= UBIFS_IMMUTABLE_FL;
- if (ioctl_flags & FS_DIRSYNC_FL)
- ubifs_flags |= UBIFS_DIRSYNC_FL;
-
- return ubifs_flags;
-}
-
-/*
- * ubifs2ioctl - convert UBIFS inode flags to ioctl inode flags.
- * @ubifs_flags: flags to convert
- *
- * This function convert UBIFS (@UBIFS_COMPR_FL, etc) to ioctl flags
- * (@FS_COMPR_FL, etc).
- */
-static int ubifs2ioctl(int ubifs_flags)
-{
- int ioctl_flags = 0;
-
- if (ubifs_flags & UBIFS_COMPR_FL)
- ioctl_flags |= FS_COMPR_FL;
- if (ubifs_flags & UBIFS_SYNC_FL)
- ioctl_flags |= FS_SYNC_FL;
- if (ubifs_flags & UBIFS_APPEND_FL)
- ioctl_flags |= FS_APPEND_FL;
- if (ubifs_flags & UBIFS_IMMUTABLE_FL)
- ioctl_flags |= FS_IMMUTABLE_FL;
- if (ubifs_flags & UBIFS_DIRSYNC_FL)
- ioctl_flags |= FS_DIRSYNC_FL;
-
- return ioctl_flags;
-}
-
-static int setflags(struct inode *inode, int flags)
-{
- int oldflags, err, release;
- struct ubifs_inode *ui = ubifs_inode(inode);
- struct ubifs_info *c = inode->i_sb->s_fs_info;
- struct ubifs_budget_req req = { .dirtied_ino = 1,
- .dirtied_ino_d = ui->data_len };
-
- err = ubifs_budget_space(c, &req);
- if (err)
- return err;
-
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- */
- mutex_lock(&ui->ui_mutex);
- oldflags = ubifs2ioctl(ui->flags);
- if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- err = -EPERM;
- goto out_unlock;
- }
- }
-
- ui->flags = ioctl2ubifs(flags);
- ubifs_set_inode_flags(inode);
- inode->i_ctime = ubifs_current_time(inode);
- release = ui->dirty;
- mark_inode_dirty_sync(inode);
- mutex_unlock(&ui->ui_mutex);
-
- if (release)
- ubifs_release_budget(c, &req);
- if (IS_SYNC(inode))
- err = write_inode_now(inode, 1);
- return err;
-
-out_unlock:
- ubifs_err("can't modify inode %lu attributes", inode->i_ino);
- mutex_unlock(&ui->ui_mutex);
- ubifs_release_budget(c, &req);
- return err;
-}
-
-long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- int flags, err;
- struct inode *inode = file->f_path.dentry->d_inode;
-
- switch (cmd) {
- case FS_IOC_GETFLAGS:
- flags = ubifs2ioctl(ubifs_inode(inode)->flags);
-
- dbg_gen("get flags: %#x, i_flags %#x", flags, inode->i_flags);
- return put_user(flags, (int __user *) arg);
-
- case FS_IOC_SETFLAGS: {
- if (IS_RDONLY(inode))
- return -EROFS;
-
- if (!inode_owner_or_capable(inode))
- return -EACCES;
-
- if (get_user(flags, (int __user *) arg))
- return -EFAULT;
-
- if (!S_ISDIR(inode->i_mode))
- flags &= ~FS_DIRSYNC_FL;
-
- /*
- * Make sure the file-system is read-write and make sure it
- * will not become read-only while we are changing the flags.
- */
- err = mnt_want_write_file(file);
- if (err)
- return err;
- dbg_gen("set flags: %#x, i_flags %#x", flags, inode->i_flags);
- err = setflags(inode, flags);
- mnt_drop_write_file(file);
- return err;
- }
-
- default:
- return -ENOTTY;
- }
-}
-
-#ifdef CONFIG_COMPAT
-long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case FS_IOC32_GETFLAGS:
- cmd = FS_IOC_GETFLAGS;
- break;
- case FS_IOC32_SETFLAGS:
- cmd = FS_IOC_SETFLAGS;
- break;
- default:
- return -ENOIOCTLCMD;
- }
- return ubifs_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
-}
-#endif