hfsplus: split hfsplus_ioctl
Give each ioctl command a function of it's own. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
This commit is contained in:
Christoph Hellwig
Родитель
249e635300
Коммит
94744567fe
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@ -21,78 +21,93 @@
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#include <asm/uaccess.h>
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#include "hfsplus_fs.h"
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long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
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{
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struct inode *inode = filp->f_path.dentry->d_inode;
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struct inode *inode = file->f_path.dentry->d_inode;
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unsigned int flags = 0;
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if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
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flags |= FS_IMMUTABLE_FL;
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if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
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flags |= FS_APPEND_FL;
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if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
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flags |= FS_NODUMP_FL;
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return put_user(flags, user_flags);
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}
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static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
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{
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struct inode *inode = file->f_path.dentry->d_inode;
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unsigned int flags;
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int err = 0;
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lock_kernel();
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err = mnt_want_write(file->f_path.mnt);
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if (err)
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goto out_unlock_kernel;
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if (!is_owner_or_cap(inode)) {
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err = -EACCES;
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goto out_drop_write;
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}
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if (get_user(flags, user_flags)) {
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err = -EFAULT;
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goto out_drop_write;
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}
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if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
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HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
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if (!capable(CAP_LINUX_IMMUTABLE)) {
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err = -EPERM;
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goto out_drop_write;
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}
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}
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/* don't silently ignore unsupported ext2 flags */
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if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
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err = -EOPNOTSUPP;
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goto out_drop_write;
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}
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if (flags & FS_IMMUTABLE_FL) {
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inode->i_flags |= S_IMMUTABLE;
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HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
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} else {
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inode->i_flags &= ~S_IMMUTABLE;
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HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
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}
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if (flags & FS_APPEND_FL) {
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inode->i_flags |= S_APPEND;
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HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
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} else {
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inode->i_flags &= ~S_APPEND;
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HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
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}
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if (flags & FS_NODUMP_FL)
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HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
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else
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HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
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inode->i_ctime = CURRENT_TIME_SEC;
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mark_inode_dirty(inode);
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out_drop_write:
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mnt_drop_write(file->f_path.mnt);
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out_unlock_kernel:
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unlock_kernel();
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return err;
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}
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long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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void __user *argp = (void __user *)arg;
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switch (cmd) {
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case HFSPLUS_IOC_EXT2_GETFLAGS:
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flags = 0;
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if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
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flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
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if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
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flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
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if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
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flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
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return put_user(flags, (int __user *)arg);
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case HFSPLUS_IOC_EXT2_SETFLAGS: {
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int err = 0;
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lock_kernel();
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err = mnt_want_write(filp->f_path.mnt);
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if (err) {
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unlock_kernel();
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return err;
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}
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if (!is_owner_or_cap(inode)) {
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err = -EACCES;
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goto setflags_out;
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}
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if (get_user(flags, (int __user *)arg)) {
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err = -EFAULT;
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goto setflags_out;
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}
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if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
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HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
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if (!capable(CAP_LINUX_IMMUTABLE)) {
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err = -EPERM;
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goto setflags_out;
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}
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}
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/* don't silently ignore unsupported ext2 flags */
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if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
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err = -EOPNOTSUPP;
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goto setflags_out;
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}
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if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */
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inode->i_flags |= S_IMMUTABLE;
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HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
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} else {
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inode->i_flags &= ~S_IMMUTABLE;
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HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
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}
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if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
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inode->i_flags |= S_APPEND;
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HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
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} else {
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inode->i_flags &= ~S_APPEND;
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HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
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}
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if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
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HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
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else
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HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
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inode->i_ctime = CURRENT_TIME_SEC;
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mark_inode_dirty(inode);
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setflags_out:
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mnt_drop_write(filp->f_path.mnt);
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unlock_kernel();
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return err;
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}
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return hfsplus_ioctl_getflags(file, argp);
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case HFSPLUS_IOC_EXT2_SETFLAGS:
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return hfsplus_ioctl_setflags(file, argp);
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default:
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return -ENOTTY;
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}
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