linux-master/fs/ioctl.c

459  * @fa:		fileattr pointer
465 void fileattr_fill_xflags(struct fileattr *fa, u32 xflags)
467 	memset(fa, 0, sizeof(*fa));
468 	fa->fsx_valid = true;
469 	fa->fsx_xflags = xflags;
470 	if (fa->fsx_xflags & FS_XFLAG_IMMUTABLE)
471 		fa->flags |= FS_IMMUTABLE_FL;
472 	if (fa->fsx_xflags & FS_XFLAG_APPEND)
473 		fa->flags |= FS_APPEND_FL;
474 	if (fa->fsx_xflags & FS_XFLAG_SYNC)
475 		fa->flags |= FS_SYNC_FL;
476 	if (fa->fsx_xflags & FS_XFLAG_NOATIME)
477 		fa->flags |= FS_NOATIME_FL;
478 	if (fa->fsx_xflags & FS_XFLAG_NODUMP)
479 		fa->flags |= FS_NODUMP_FL;
480 	if (fa->fsx_xflags & FS_XFLAG_DAX)
481 		fa->flags |= FS_DAX_FL;
482 	if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
483 		fa->flags |= FS_PROJINHERIT_FL;
489  * @fa:		fileattr pointer
495 void fileattr_fill_flags(struct fileattr *fa, u32 flags)
497 	memset(fa, 0, sizeof(*fa));
498 	fa->flags_valid = true;
499 	fa->flags = flags;
500 	if (fa->flags & FS_SYNC_FL)
501 		fa->fsx_xflags |= FS_XFLAG_SYNC;
502 	if (fa->flags & FS_IMMUTABLE_FL)
503 		fa->fsx_xflags |= FS_XFLAG_IMMUTABLE;
504 	if (fa->flags & FS_APPEND_FL)
505 		fa->fsx_xflags |= FS_XFLAG_APPEND;
506 	if (fa->flags & FS_NODUMP_FL)
507 		fa->fsx_xflags |= FS_XFLAG_NODUMP;
508 	if (fa->flags & FS_NOATIME_FL)
509 		fa->fsx_xflags |= FS_XFLAG_NOATIME;
510 	if (fa->flags & FS_DAX_FL)
511 		fa->fsx_xflags |= FS_XFLAG_DAX;
512 	if (fa->flags & FS_PROJINHERIT_FL)
513 		fa->fsx_xflags |= FS_XFLAG_PROJINHERIT;
520  * @fa:		fileattr pointer
526 int vfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
533 	return inode->i_op->fileattr_get(dentry, fa);
539  * @fa:		fileattr pointer
544 int copy_fsxattr_to_user(const struct fileattr *fa, struct fsxattr __user *ufa)
549 	xfa.fsx_xflags = fa->fsx_xflags;
550 	xfa.fsx_extsize = fa->fsx_extsize;
551 	xfa.fsx_nextents = fa->fsx_nextents;
552 	xfa.fsx_projid = fa->fsx_projid;
553 	xfa.fsx_cowextsize = fa->fsx_cowextsize;
562 static int copy_fsxattr_from_user(struct fileattr *fa,
570 	fileattr_fill_xflags(fa, xfa.fsx_xflags);
571 	fa->fsx_extsize = xfa.fsx_extsize;
572 	fa->fsx_nextents = xfa.fsx_nextents;
573 	fa->fsx_projid = xfa.fsx_projid;
574 	fa->fsx_cowextsize = xfa.fsx_cowextsize;
587 			      struct fileattr *fa)
595 	if ((fa->flags ^ old_ma->flags) & (FS_APPEND_FL | FS_IMMUTABLE_FL) &&
599 	err = fscrypt_prepare_setflags(inode, old_ma->flags, fa->flags);
609 		if (old_ma->fsx_projid != fa->fsx_projid)
611 		if ((old_ma->fsx_xflags ^ fa->fsx_xflags) &
619 		if (old_ma->fsx_projid != fa->fsx_projid &&
620 		    !projid_valid(make_kprojid(&init_user_ns, fa->fsx_projid)))
625 	if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(inode->i_mode))
628 	if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
632 	if ((fa->fsx_xflags & FS_XFLAG_COWEXTSIZE) &&
640 	if ((fa->fsx_xflags & FS_XFLAG_DAX) &&
645 	if (fa->fsx_extsize == 0)
646 		fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
647 	if (fa->fsx_cowextsize == 0)
648 		fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
657  * @fa:		fileattr pointer
670 		     struct fileattr *fa)
686 		if (fa->flags_valid) {
687 			fa->fsx_xflags |= old_ma.fsx_xflags & ~FS_XFLAG_COMMON;
688 			fa->fsx_extsize = old_ma.fsx_extsize;
689 			fa->fsx_nextents = old_ma.fsx_nextents;
690 			fa->fsx_projid = old_ma.fsx_projid;
691 			fa->fsx_cowextsize = old_ma.fsx_cowextsize;
693 			fa->flags |= old_ma.flags & ~FS_COMMON_FL;
695 		err = fileattr_set_prepare(inode, &old_ma, fa);
697 			err = inode->i_op->fileattr_set(idmap, dentry, fa);
707 	struct fileattr fa = { .flags_valid = true }; /* hint only */
710 	err = vfs_fileattr_get(file->f_path.dentry, &fa);
712 		err = put_user(fa.flags, argp);
720 	struct fileattr fa;
728 			fileattr_fill_flags(&fa, flags);
729 			err = vfs_fileattr_set(idmap, dentry, &fa);
738 	struct fileattr fa = { .fsx_valid = true }; /* hint only */
741 	err = vfs_fileattr_get(file->f_path.dentry, &fa);
743 		err = copy_fsxattr_to_user(&fa, argp);
752 	struct fileattr fa;
755 	err = copy_fsxattr_from_user(&fa, argp);
759 			err = vfs_fileattr_set(idmap, dentry, &fa);