diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/ext2/ioctl.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/ext2/ioctl.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/ANDROID_3.4.5/fs/ext2/ioctl.c b/ANDROID_3.4.5/fs/ext2/ioctl.c deleted file mode 100644 index 2de655f5..00000000 --- a/ANDROID_3.4.5/fs/ext2/ioctl.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * linux/fs/ext2/ioctl.c - * - * Copyright (C) 1993, 1994, 1995 - * Remy Card (card@masi.ibp.fr) - * Laboratoire MASI - Institut Blaise Pascal - * Universite Pierre et Marie Curie (Paris VI) - */ - -#include "ext2.h" -#include <linux/capability.h> -#include <linux/time.h> -#include <linux/sched.h> -#include <linux/compat.h> -#include <linux/mount.h> -#include <asm/current.h> -#include <asm/uaccess.h> - - -long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - struct inode *inode = filp->f_dentry->d_inode; - struct ext2_inode_info *ei = EXT2_I(inode); - unsigned int flags; - unsigned short rsv_window_size; - int ret; - - ext2_debug ("cmd = %u, arg = %lu\n", cmd, arg); - - switch (cmd) { - case EXT2_IOC_GETFLAGS: - ext2_get_inode_flags(ei); - flags = ei->i_flags & EXT2_FL_USER_VISIBLE; - return put_user(flags, (int __user *) arg); - case EXT2_IOC_SETFLAGS: { - unsigned int oldflags; - - ret = mnt_want_write_file(filp); - if (ret) - return ret; - - if (!inode_owner_or_capable(inode)) { - ret = -EACCES; - goto setflags_out; - } - - if (get_user(flags, (int __user *) arg)) { - ret = -EFAULT; - goto setflags_out; - } - - flags = ext2_mask_flags(inode->i_mode, flags); - - mutex_lock(&inode->i_mutex); - /* Is it quota file? Do not allow user to mess with it */ - if (IS_NOQUOTA(inode)) { - mutex_unlock(&inode->i_mutex); - ret = -EPERM; - goto setflags_out; - } - oldflags = ei->i_flags; - - /* - * The IMMUTABLE and APPEND_ONLY flags can only be changed by - * the relevant capability. - * - * This test looks nicer. Thanks to Pauline Middelink - */ - if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) { - if (!capable(CAP_LINUX_IMMUTABLE)) { - mutex_unlock(&inode->i_mutex); - ret = -EPERM; - goto setflags_out; - } - } - - flags = flags & EXT2_FL_USER_MODIFIABLE; - flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE; - ei->i_flags = flags; - - ext2_set_inode_flags(inode); - inode->i_ctime = CURRENT_TIME_SEC; - mutex_unlock(&inode->i_mutex); - - mark_inode_dirty(inode); -setflags_out: - mnt_drop_write_file(filp); - return ret; - } - case EXT2_IOC_GETVERSION: - return put_user(inode->i_generation, (int __user *) arg); - case EXT2_IOC_SETVERSION: { - __u32 generation; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - ret = mnt_want_write_file(filp); - if (ret) - return ret; - if (get_user(generation, (int __user *) arg)) { - ret = -EFAULT; - goto setversion_out; - } - - mutex_lock(&inode->i_mutex); - inode->i_ctime = CURRENT_TIME_SEC; - inode->i_generation = generation; - mutex_unlock(&inode->i_mutex); - - mark_inode_dirty(inode); -setversion_out: - mnt_drop_write_file(filp); - return ret; - } - case EXT2_IOC_GETRSVSZ: - if (test_opt(inode->i_sb, RESERVATION) - && S_ISREG(inode->i_mode) - && ei->i_block_alloc_info) { - rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size; - return put_user(rsv_window_size, (int __user *)arg); - } - return -ENOTTY; - case EXT2_IOC_SETRSVSZ: { - - if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode)) - return -ENOTTY; - - if (!inode_owner_or_capable(inode)) - return -EACCES; - - if (get_user(rsv_window_size, (int __user *)arg)) - return -EFAULT; - - ret = mnt_want_write_file(filp); - if (ret) - return ret; - - if (rsv_window_size > EXT2_MAX_RESERVE_BLOCKS) - rsv_window_size = EXT2_MAX_RESERVE_BLOCKS; - - /* - * need to allocate reservation structure for this inode - * before set the window size - */ - /* - * XXX What lock should protect the rsv_goal_size? - * Accessed in ext2_get_block only. ext3 uses i_truncate. - */ - mutex_lock(&ei->truncate_mutex); - if (!ei->i_block_alloc_info) - ext2_init_block_alloc_info(inode); - - if (ei->i_block_alloc_info){ - struct ext2_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node; - rsv->rsv_goal_size = rsv_window_size; - } - mutex_unlock(&ei->truncate_mutex); - mnt_drop_write_file(filp); - return 0; - } - default: - return -ENOTTY; - } -} - -#ifdef CONFIG_COMPAT -long ext2_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - /* These are just misnamed, they actually get/put from/to user an int */ - switch (cmd) { - case EXT2_IOC32_GETFLAGS: - cmd = EXT2_IOC_GETFLAGS; - break; - case EXT2_IOC32_SETFLAGS: - cmd = EXT2_IOC_SETFLAGS; - break; - case EXT2_IOC32_GETVERSION: - cmd = EXT2_IOC_GETVERSION; - break; - case EXT2_IOC32_SETVERSION: - cmd = EXT2_IOC_SETVERSION; - break; - default: - return -ENOIOCTLCMD; - } - return ext2_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); -} -#endif |