[linux-block.git] / fs / orangefs / orangefs-utils.c

// SPDX-License-Identifier: GPL-2.0
/*
 * (C) 2001 Clemson University and The University of Chicago
 * Copyright 2018 Omnibond Systems, L.L.C.
 *
 * See COPYING in top-level directory.
 */
#include <linux/kernel.h>
#include "protocol.h"
#include "orangefs-kernel.h"
#include "orangefs-dev-proto.h"
#include "orangefs-bufmap.h"

__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
{
	__s32 fsid = ORANGEFS_FS_ID_NULL;

	if (op) {
		switch (op->upcall.type) {
		case ORANGEFS_VFS_OP_FILE_IO:
			fsid = op->upcall.req.io.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_LOOKUP:
			fsid = op->upcall.req.lookup.parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_CREATE:
			fsid = op->upcall.req.create.parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_GETATTR:
			fsid = op->upcall.req.getattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_REMOVE:
			fsid = op->upcall.req.remove.parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_MKDIR:
			fsid = op->upcall.req.mkdir.parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_READDIR:
			fsid = op->upcall.req.readdir.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_SETATTR:
			fsid = op->upcall.req.setattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_SYMLINK:
			fsid = op->upcall.req.sym.parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_RENAME:
			fsid = op->upcall.req.rename.old_parent_refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_STATFS:
			fsid = op->upcall.req.statfs.fs_id;
			break;
		case ORANGEFS_VFS_OP_TRUNCATE:
			fsid = op->upcall.req.truncate.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_RA_FLUSH:
			fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_FS_UMOUNT:
			fsid = op->upcall.req.fs_umount.fs_id;
			break;
		case ORANGEFS_VFS_OP_GETXATTR:
			fsid = op->upcall.req.getxattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_SETXATTR:
			fsid = op->upcall.req.setxattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_LISTXATTR:
			fsid = op->upcall.req.listxattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_REMOVEXATTR:
			fsid = op->upcall.req.removexattr.refn.fs_id;
			break;
		case ORANGEFS_VFS_OP_FSYNC:
			fsid = op->upcall.req.fsync.refn.fs_id;
			break;
		default:
			break;
		}
	}
	return fsid;
}

static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
{
	int flags = 0;
	if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
		flags |= S_IMMUTABLE;
	else
		flags &= ~S_IMMUTABLE;
	if (attrs->flags & ORANGEFS_APPEND_FL)
		flags |= S_APPEND;
	else
		flags &= ~S_APPEND;
	if (attrs->flags & ORANGEFS_NOATIME_FL)
		flags |= S_NOATIME;
	else
		flags &= ~S_NOATIME;
	return flags;
}

static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
{
	int perm_mode = 0;

	if (attrs->perms & ORANGEFS_O_EXECUTE)
		perm_mode |= S_IXOTH;
	if (attrs->perms & ORANGEFS_O_WRITE)
		perm_mode |= S_IWOTH;
	if (attrs->perms & ORANGEFS_O_READ)
		perm_mode |= S_IROTH;

	if (attrs->perms & ORANGEFS_G_EXECUTE)
		perm_mode |= S_IXGRP;
	if (attrs->perms & ORANGEFS_G_WRITE)
		perm_mode |= S_IWGRP;
	if (attrs->perms & ORANGEFS_G_READ)
		perm_mode |= S_IRGRP;

	if (attrs->perms & ORANGEFS_U_EXECUTE)
		perm_mode |= S_IXUSR;
	if (attrs->perms & ORANGEFS_U_WRITE)
		perm_mode |= S_IWUSR;
	if (attrs->perms & ORANGEFS_U_READ)
		perm_mode |= S_IRUSR;

	if (attrs->perms & ORANGEFS_G_SGID)
		perm_mode |= S_ISGID;
	if (attrs->perms & ORANGEFS_U_SUID)
		perm_mode |= S_ISUID;

	return perm_mode;
}

/*
 * NOTE: in kernel land, we never use the sys_attr->link_target for
 * anything, so don't bother copying it into the sys_attr object here.
 */
static inline void copy_attributes_from_inode(struct inode *inode,
    struct ORANGEFS_sys_attr_s *attrs)
{
	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	attrs->mask = 0;
	if (orangefs_inode->attr_valid & ATTR_UID) {
		attrs->owner = from_kuid(&init_user_ns, inode->i_uid);
		attrs->mask |= ORANGEFS_ATTR_SYS_UID;
		gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
	}
	if (orangefs_inode->attr_valid & ATTR_GID) {
		attrs->group = from_kgid(&init_user_ns, inode->i_gid);
		attrs->mask |= ORANGEFS_ATTR_SYS_GID;
		gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
	}

	if (orangefs_inode->attr_valid & ATTR_ATIME) {
		attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
		if (orangefs_inode->attr_valid & ATTR_ATIME_SET) {
			attrs->atime = (time64_t)inode->i_atime.tv_sec;
			attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
		}
	}
	if (orangefs_inode->attr_valid & ATTR_MTIME) {
		attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
		if (orangefs_inode->attr_valid & ATTR_MTIME_SET) {
			attrs->mtime = (time64_t)inode->i_mtime.tv_sec;
			attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
		}
	}
	if (orangefs_inode->attr_valid & ATTR_CTIME)
		attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;

	/*
	 * ORANGEFS cannot set size with a setattr operation. Probably not
	 * likely to be requested through the VFS, but just in case, don't
	 * worry about ATTR_SIZE
	 */

	if (orangefs_inode->attr_valid & ATTR_MODE) {
		attrs->perms = ORANGEFS_util_translate_mode(inode->i_mode);
		attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
	}
}

static int orangefs_inode_type(enum orangefs_ds_type objtype)
{
	if (objtype == ORANGEFS_TYPE_METAFILE)
		return S_IFREG;
	else if (objtype == ORANGEFS_TYPE_DIRECTORY)
		return S_IFDIR;
	else if (objtype == ORANGEFS_TYPE_SYMLINK)
		return S_IFLNK;
	else
		return -1;
}

static void orangefs_make_bad_inode(struct inode *inode)
{
	if (is_root_handle(inode)) {
		/*
		 * if this occurs, the pvfs2-client-core was killed but we
		 * can't afford to lose the inode operations and such
		 * associated with the root handle in any case.
		 */
		gossip_debug(GOSSIP_UTILS_DEBUG,
			     "*** NOT making bad root inode %pU\n",
			     get_khandle_from_ino(inode));
	} else {
		gossip_debug(GOSSIP_UTILS_DEBUG,
			     "*** making bad inode %pU\n",
			     get_khandle_from_ino(inode));
		make_bad_inode(inode);
	}
}

static int orangefs_inode_is_stale(struct inode *inode,
    struct ORANGEFS_sys_attr_s *attrs, char *link_target)
{
	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	int type = orangefs_inode_type(attrs->objtype);
	/*
	 * If the inode type or symlink target have changed then this
	 * inode is stale.
	 */
	if (type == -1 || !(inode->i_mode & type)) {
		orangefs_make_bad_inode(inode);
		return 1;
	}
	if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
	    link_target, ORANGEFS_NAME_MAX)) {
		orangefs_make_bad_inode(inode);
		return 1;
	}
	return 0;
}

int orangefs_inode_getattr(struct inode *inode, int flags)
{
	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	struct orangefs_kernel_op_s *new_op;
	loff_t inode_size;
	int ret, type;

	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU flags %d\n",
	    __func__, get_khandle_from_ino(inode), flags);

again:
	spin_lock(&inode->i_lock);
	/* Must have all the attributes in the mask and be within cache time. */
	if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
	    orangefs_inode->attr_valid) {
		if (orangefs_inode->attr_valid) {
			spin_unlock(&inode->i_lock);
			write_inode_now(inode, 1);
			goto again;
		}
		spin_unlock(&inode->i_lock);
		return 0;
	}
	spin_unlock(&inode->i_lock);

	new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
	if (!new_op)
		return -ENOMEM;
	new_op->upcall.req.getattr.refn = orangefs_inode->refn;
	/*
	 * Size is the hardest attribute to get.  The incremental cost of any
	 * other attribute is essentially zero.
	 */
	if (flags)
		new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
	else
		new_op->upcall.req.getattr.mask =
		    ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;

	ret = service_operation(new_op, __func__,
	    get_interruptible_flag(inode));
	if (ret != 0)
		goto out;

again2:
	spin_lock(&inode->i_lock);
	/* Must have all the attributes in the mask and be within cache time. */
	if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
	    orangefs_inode->attr_valid) {
		if (orangefs_inode->attr_valid) {
			spin_unlock(&inode->i_lock);
			write_inode_now(inode, 1);
			goto again2;
		}
		gossip_debug(GOSSIP_UTILS_DEBUG, "%s: in cache or dirty\n",
		    __func__);
		ret = 0;
		goto out_unlock;
	}

	if (!(flags & ORANGEFS_GETATTR_NEW)) {
		ret = orangefs_inode_is_stale(inode,
		    &new_op->downcall.resp.getattr.attributes,
		    new_op->downcall.resp.getattr.link_target);
		if (ret) {
			ret = -ESTALE;
			goto out_unlock;
		}
	}

	type = orangefs_inode_type(new_op->
	    downcall.resp.getattr.attributes.objtype);
	switch (type) {
	case S_IFREG:
		inode->i_flags = orangefs_inode_flags(&new_op->
		    downcall.resp.getattr.attributes);
		if (flags) {
			inode_size = (loff_t)new_op->
			    downcall.resp.getattr.attributes.size;
			inode->i_size = inode_size;
			inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
			    attributes.blksize);
			inode->i_bytes = inode_size;
			inode->i_blocks =
			    (inode_size + 512 - inode_size % 512)/512;
		}
		break;
	case S_IFDIR:
		if (flags) {
			inode->i_size = PAGE_SIZE;
			inode_set_bytes(inode, inode->i_size);
		}
		set_nlink(inode, 1);
		break;
	case S_IFLNK:
		if (flags & ORANGEFS_GETATTR_NEW) {
			inode->i_size = (loff_t)strlen(new_op->
			    downcall.resp.getattr.link_target);
			ret = strscpy(orangefs_inode->link_target,
			    new_op->downcall.resp.getattr.link_target,
			    ORANGEFS_NAME_MAX);
			if (ret == -E2BIG) {
				ret = -EIO;
				goto out_unlock;
			}
			inode->i_link = orangefs_inode->link_target;
		}
		break;
	/* i.e. -1 */
	default:
		/* XXX: ESTALE?  This is what is done if it is not new. */
		orangefs_make_bad_inode(inode);
		ret = -ESTALE;
		goto out_unlock;
	}

	inode->i_uid = make_kuid(&init_user_ns, new_op->
	    downcall.resp.getattr.attributes.owner);
	inode->i_gid = make_kgid(&init_user_ns, new_op->
	    downcall.resp.getattr.attributes.group);
	inode->i_atime.tv_sec = (time64_t)new_op->
	    downcall.resp.getattr.attributes.atime;
	inode->i_mtime.tv_sec = (time64_t)new_op->
	    downcall.resp.getattr.attributes.mtime;
	inode->i_ctime.tv_sec = (time64_t)new_op->
	    downcall.resp.getattr.attributes.ctime;
	inode->i_atime.tv_nsec = 0;
	inode->i_mtime.tv_nsec = 0;
	inode->i_ctime.tv_nsec = 0;

	/* special case: mark the root inode as sticky */
	inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
	    orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);

	orangefs_inode->getattr_time = jiffies +
	    orangefs_getattr_timeout_msecs*HZ/1000;
	ret = 0;
out_unlock:
	spin_unlock(&inode->i_lock);
out:
	op_release(new_op);
	return ret;
}

int orangefs_inode_check_changed(struct inode *inode)
{
	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	struct orangefs_kernel_op_s *new_op;
	int ret;

	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
	    get_khandle_from_ino(inode));

	new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
	if (!new_op)
		return -ENOMEM;
	new_op->upcall.req.getattr.refn = orangefs_inode->refn;
	new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE |
	    ORANGEFS_ATTR_SYS_LNK_TARGET;

	ret = service_operation(new_op, __func__,
	    get_interruptible_flag(inode));
	if (ret != 0)
		goto out;

	ret = orangefs_inode_is_stale(inode,
	    &new_op->downcall.resp.getattr.attributes,
	    new_op->downcall.resp.getattr.link_target);
out:
	op_release(new_op);
	return ret;
}

/*
 * issues a orangefs setattr request to make sure the new attribute values
 * take effect if successful.  returns 0 on success; -errno otherwise
 */
int orangefs_inode_setattr(struct inode *inode)
{
	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	struct orangefs_kernel_op_s *new_op;
	int ret;

	new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
	if (!new_op)
		return -ENOMEM;

	spin_lock(&inode->i_lock);
	new_op->upcall.uid = from_kuid(&init_user_ns, orangefs_inode->attr_uid);
	new_op->upcall.gid = from_kgid(&init_user_ns, orangefs_inode->attr_gid);
	new_op->upcall.req.setattr.refn = orangefs_inode->refn;
	copy_attributes_from_inode(inode,
	    &new_op->upcall.req.setattr.attributes);
	orangefs_inode->attr_valid = 0;
	spin_unlock(&inode->i_lock);

	ret = service_operation(new_op, __func__,
	    get_interruptible_flag(inode));
	gossip_debug(GOSSIP_UTILS_DEBUG,
	    "orangefs_inode_setattr: returning %d\n", ret);
	if (ret)
		orangefs_make_bad_inode(inode);

	op_release(new_op);

	if (ret == 0)
		orangefs_inode->getattr_time = jiffies - 1;
	return ret;
}

/*
 * The following is a very dirty hack that is now a permanent part of the
 * ORANGEFS protocol. See protocol.h for more error definitions.
 */

/* The order matches include/orangefs-types.h in the OrangeFS source. */
static int PINT_errno_mapping[] = {
	0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM,
	EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE,
	EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG,
	ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH,
	EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM,
	EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE,
	ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE,
	EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS,
	ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY,
	EACCES, ECONNRESET, ERANGE
};

int orangefs_normalize_to_errno(__s32 error_code)
{
	__u32 i;

	/* Success */
	if (error_code == 0) {
		return 0;
	/*
	 * This shouldn't ever happen. If it does it should be fixed on the
	 * server.
	 */
	} else if (error_code > 0) {
		gossip_err("orangefs: error status received.\n");
		gossip_err("orangefs: assuming error code is inverted.\n");
		error_code = -error_code;
	}

	/*
	 * XXX: This is very bad since error codes from ORANGEFS may not be
	 * suitable for return into userspace.
	 */

	/*
	 * Convert ORANGEFS error values into errno values suitable for return
	 * from the kernel.
	 */
	if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) {
		if (((-error_code) &
		    (ORANGEFS_ERROR_NUMBER_BITS|ORANGEFS_NON_ERRNO_ERROR_BIT|
		    ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) {
			/*
			 * cancellation error codes generally correspond to
			 * a timeout from the client's perspective
			 */
			error_code = -ETIMEDOUT;
		} else {
			/* assume a default error code */
			gossip_err("%s: bad error code :%d:.\n",
				__func__,
				error_code);
			error_code = -EINVAL;
		}

	/* Convert ORANGEFS encoded errno values into regular errno values. */
	} else if ((-error_code) & ORANGEFS_ERROR_BIT) {
		i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS);
		if (i < ARRAY_SIZE(PINT_errno_mapping))
			error_code = -PINT_errno_mapping[i];
		else
			error_code = -EINVAL;

	/*
	 * Only ORANGEFS protocol error codes should ever come here. Otherwise
	 * there is a bug somewhere.
	 */
	} else {
		gossip_err("%s: unknown error code.\n", __func__);
		error_code = -EINVAL;
	}
	return error_code;
}

#define NUM_MODES 11
__s32 ORANGEFS_util_translate_mode(int mode)
{
	int ret = 0;
	int i = 0;
	static int modes[NUM_MODES] = {
		S_IXOTH, S_IWOTH, S_IROTH,
		S_IXGRP, S_IWGRP, S_IRGRP,
		S_IXUSR, S_IWUSR, S_IRUSR,
		S_ISGID, S_ISUID
	};
	static int orangefs_modes[NUM_MODES] = {
		ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ,
		ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ,
		ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ,
		ORANGEFS_G_SGID, ORANGEFS_U_SUID
	};

	for (i = 0; i < NUM_MODES; i++)
		if (mode & modes[i])
			ret |= orangefs_modes[i];

	return ret;
}
#undef NUM_MODES
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
f7be4ee0 MM	2	/*
f7be4ee0 MM	3	* (C) 2001 Clemson University and The University of Chicago
8b60785c	4	* Copyright 2018 Omnibond Systems, L.L.C.
f7be4ee0 MM	5	*
	6	* See COPYING in top-level directory.
	7	*/
296200d3	8	#include <linux/kernel.h>
f7be4ee0	9	#include "protocol.h"
575e9461 MM	10	#include "orangefs-kernel.h"
	11	#include "orangefs-dev-proto.h"
	12	#include "orangefs-bufmap.h"
f7be4ee0	13
8bb8aefd	14	__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
f7be4ee0	15	{
8bb8aefd	16	__s32 fsid = ORANGEFS_FS_ID_NULL;
f7be4ee0 MM	17
	18	if (op) {
	19	switch (op->upcall.type) {
8bb8aefd	20	case ORANGEFS_VFS_OP_FILE_IO:
f7be4ee0 MM	21	fsid = op->upcall.req.io.refn.fs_id;
f7be4ee0 MM	22	break;
8bb8aefd	23	case ORANGEFS_VFS_OP_LOOKUP:
f7be4ee0 MM	24	fsid = op->upcall.req.lookup.parent_refn.fs_id;
f7be4ee0 MM	25	break;
8bb8aefd	26	case ORANGEFS_VFS_OP_CREATE:
f7be4ee0 MM	27	fsid = op->upcall.req.create.parent_refn.fs_id;
f7be4ee0 MM	28	break;
8bb8aefd	29	case ORANGEFS_VFS_OP_GETATTR:
f7be4ee0 MM	30	fsid = op->upcall.req.getattr.refn.fs_id;
f7be4ee0 MM	31	break;
8bb8aefd	32	case ORANGEFS_VFS_OP_REMOVE:
f7be4ee0 MM	33	fsid = op->upcall.req.remove.parent_refn.fs_id;
f7be4ee0 MM	34	break;
8bb8aefd	35	case ORANGEFS_VFS_OP_MKDIR:
f7be4ee0 MM	36	fsid = op->upcall.req.mkdir.parent_refn.fs_id;
f7be4ee0 MM	37	break;
8bb8aefd	38	case ORANGEFS_VFS_OP_READDIR:
f7be4ee0 MM	39	fsid = op->upcall.req.readdir.refn.fs_id;
f7be4ee0 MM	40	break;
8bb8aefd	41	case ORANGEFS_VFS_OP_SETATTR:
f7be4ee0 MM	42	fsid = op->upcall.req.setattr.refn.fs_id;
f7be4ee0 MM	43	break;
8bb8aefd	44	case ORANGEFS_VFS_OP_SYMLINK:
f7be4ee0 MM	45	fsid = op->upcall.req.sym.parent_refn.fs_id;
f7be4ee0 MM	46	break;
8bb8aefd	47	case ORANGEFS_VFS_OP_RENAME:
f7be4ee0 MM	48	fsid = op->upcall.req.rename.old_parent_refn.fs_id;
f7be4ee0 MM	49	break;
8bb8aefd	50	case ORANGEFS_VFS_OP_STATFS:
f7be4ee0 MM	51	fsid = op->upcall.req.statfs.fs_id;
f7be4ee0 MM	52	break;
8bb8aefd	53	case ORANGEFS_VFS_OP_TRUNCATE:
f7be4ee0 MM	54	fsid = op->upcall.req.truncate.refn.fs_id;
f7be4ee0 MM	55	break;
6eaff8c7	56	case ORANGEFS_VFS_OP_RA_FLUSH:
f7be4ee0 MM	57	fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
f7be4ee0 MM	58	break;
8bb8aefd	59	case ORANGEFS_VFS_OP_FS_UMOUNT:
f7be4ee0 MM	60	fsid = op->upcall.req.fs_umount.fs_id;
f7be4ee0 MM	61	break;
8bb8aefd	62	case ORANGEFS_VFS_OP_GETXATTR:
f7be4ee0 MM	63	fsid = op->upcall.req.getxattr.refn.fs_id;
f7be4ee0 MM	64	break;
8bb8aefd	65	case ORANGEFS_VFS_OP_SETXATTR:
f7be4ee0 MM	66	fsid = op->upcall.req.setxattr.refn.fs_id;
f7be4ee0 MM	67	break;
8bb8aefd	68	case ORANGEFS_VFS_OP_LISTXATTR:
f7be4ee0 MM	69	fsid = op->upcall.req.listxattr.refn.fs_id;
f7be4ee0 MM	70	break;
8bb8aefd	71	case ORANGEFS_VFS_OP_REMOVEXATTR:
f7be4ee0 MM	72	fsid = op->upcall.req.removexattr.refn.fs_id;
f7be4ee0 MM	73	break;
8bb8aefd	74	case ORANGEFS_VFS_OP_FSYNC:
f7be4ee0 MM	75	fsid = op->upcall.req.fsync.refn.fs_id;
	76	break;
	77	default:
	78	break;
	79	}
	80	}
	81	return fsid;
	82	}
	83
394f647e	84	static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
f7be4ee0	85	{
394f647e	86	int flags = 0;
8bb8aefd	87	if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
394f647e	88	flags \|= S_IMMUTABLE;
f7be4ee0	89	else
394f647e	90	flags &= ~S_IMMUTABLE;
8bb8aefd	91	if (attrs->flags & ORANGEFS_APPEND_FL)
394f647e	92	flags \|= S_APPEND;
f7be4ee0	93	else
394f647e	94	flags &= ~S_APPEND;
8bb8aefd	95	if (attrs->flags & ORANGEFS_NOATIME_FL)
394f647e	96	flags \|= S_NOATIME;
f7be4ee0	97	else
394f647e MB	98	flags &= ~S_NOATIME;
	99	return flags;
	100	}
	101
	102	static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
	103	{
	104	int perm_mode = 0;
	105
	106	if (attrs->perms & ORANGEFS_O_EXECUTE)
	107	perm_mode \|= S_IXOTH;
	108	if (attrs->perms & ORANGEFS_O_WRITE)
	109	perm_mode \|= S_IWOTH;
	110	if (attrs->perms & ORANGEFS_O_READ)
	111	perm_mode \|= S_IROTH;
	112
	113	if (attrs->perms & ORANGEFS_G_EXECUTE)
	114	perm_mode \|= S_IXGRP;
	115	if (attrs->perms & ORANGEFS_G_WRITE)
	116	perm_mode \|= S_IWGRP;
	117	if (attrs->perms & ORANGEFS_G_READ)
	118	perm_mode \|= S_IRGRP;
f7be4ee0	119
394f647e MB	120	if (attrs->perms & ORANGEFS_U_EXECUTE)
	121	perm_mode \|= S_IXUSR;
	122	if (attrs->perms & ORANGEFS_U_WRITE)
	123	perm_mode \|= S_IWUSR;
	124	if (attrs->perms & ORANGEFS_U_READ)
	125	perm_mode \|= S_IRUSR;
	126
	127	if (attrs->perms & ORANGEFS_G_SGID)
	128	perm_mode \|= S_ISGID;
	129	if (attrs->perms & ORANGEFS_U_SUID)
	130	perm_mode \|= S_ISUID;
	131
	132	return perm_mode;
f7be4ee0 MM	133	}
f7be4ee0 MM	134
f7be4ee0 MM	135	/*
	136	* NOTE: in kernel land, we never use the sys_attr->link_target for
	137	* anything, so don't bother copying it into the sys_attr object here.
	138	*/
afd9fb2a MB	139	static inline void copy_attributes_from_inode(struct inode *inode,
afd9fb2a MB	140	struct ORANGEFS_sys_attr_s *attrs)
f7be4ee0	141	{
afd9fb2a	142	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
f7be4ee0	143	attrs->mask = 0;
afd9fb2a MB	144	if (orangefs_inode->attr_valid & ATTR_UID) {
afd9fb2a MB	145	attrs->owner = from_kuid(&init_user_ns, inode->i_uid);
8bb8aefd	146	attrs->mask \|= ORANGEFS_ATTR_SYS_UID;
f7be4ee0 MM	147	gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
f7be4ee0 MM	148	}
afd9fb2a MB	149	if (orangefs_inode->attr_valid & ATTR_GID) {
afd9fb2a MB	150	attrs->group = from_kgid(&init_user_ns, inode->i_gid);
8bb8aefd	151	attrs->mask \|= ORANGEFS_ATTR_SYS_GID;
f7be4ee0 MM	152	gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
	153	}
	154
afd9fb2a	155	if (orangefs_inode->attr_valid & ATTR_ATIME) {
8bb8aefd	156	attrs->mask \|= ORANGEFS_ATTR_SYS_ATIME;
afd9fb2a MB	157	if (orangefs_inode->attr_valid & ATTR_ATIME_SET) {
afd9fb2a MB	158	attrs->atime = (time64_t)inode->i_atime.tv_sec;
8bb8aefd	159	attrs->mask \|= ORANGEFS_ATTR_SYS_ATIME_SET;
f7be4ee0 MM	160	}
f7be4ee0 MM	161	}
afd9fb2a	162	if (orangefs_inode->attr_valid & ATTR_MTIME) {
8bb8aefd	163	attrs->mask \|= ORANGEFS_ATTR_SYS_MTIME;
afd9fb2a MB	164	if (orangefs_inode->attr_valid & ATTR_MTIME_SET) {
afd9fb2a MB	165	attrs->mtime = (time64_t)inode->i_mtime.tv_sec;
8bb8aefd	166	attrs->mask \|= ORANGEFS_ATTR_SYS_MTIME_SET;
f7be4ee0 MM	167	}
f7be4ee0 MM	168	}
afd9fb2a	169	if (orangefs_inode->attr_valid & ATTR_CTIME)
8bb8aefd	170	attrs->mask \|= ORANGEFS_ATTR_SYS_CTIME;
f7be4ee0 MM	171
f7be4ee0 MM	172	/*
95f5f88f MM	173	* ORANGEFS cannot set size with a setattr operation. Probably not
	174	* likely to be requested through the VFS, but just in case, don't
	175	* worry about ATTR_SIZE
f7be4ee0 MM	176	*/
f7be4ee0 MM	177
afd9fb2a MB	178	if (orangefs_inode->attr_valid & ATTR_MODE) {
afd9fb2a MB	179	attrs->perms = ORANGEFS_util_translate_mode(inode->i_mode);
8bb8aefd	180	attrs->mask \|= ORANGEFS_ATTR_SYS_PERM;
f7be4ee0	181	}
f7be4ee0 MM	182	}
f7be4ee0 MM	183
3c9cf98d MB	184	static int orangefs_inode_type(enum orangefs_ds_type objtype)
	185	{
	186	if (objtype == ORANGEFS_TYPE_METAFILE)
	187	return S_IFREG;
	188	else if (objtype == ORANGEFS_TYPE_DIRECTORY)
	189	return S_IFDIR;
	190	else if (objtype == ORANGEFS_TYPE_SYMLINK)
	191	return S_IFLNK;
	192	else
	193	return -1;
	194	}
	195
4d0cac7e MB	196	static void orangefs_make_bad_inode(struct inode *inode)
	197	{
	198	if (is_root_handle(inode)) {
	199	/*
	200	* if this occurs, the pvfs2-client-core was killed but we
	201	* can't afford to lose the inode operations and such
	202	* associated with the root handle in any case.
	203	*/
	204	gossip_debug(GOSSIP_UTILS_DEBUG,
	205	"*** NOT making bad root inode %pU\n",
	206	get_khandle_from_ino(inode));
	207	} else {
	208	gossip_debug(GOSSIP_UTILS_DEBUG,
	209	"*** making bad inode %pU\n",
	210	get_khandle_from_ino(inode));
	211	make_bad_inode(inode);
	212	}
	213	}
	214
480e5ae9	215	static int orangefs_inode_is_stale(struct inode *inode,
26662633 MB	216	struct ORANGEFS_sys_attr_s attrs, char link_target)
	217	{
	218	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	219	int type = orangefs_inode_type(attrs->objtype);
480e5ae9 MB	220	/*
	221	* If the inode type or symlink target have changed then this
	222	* inode is stale.
	223	*/
	224	if (type == -1 \|\| !(inode->i_mode & type)) {
	225	orangefs_make_bad_inode(inode);
	226	return 1;
	227	}
	228	if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
	229	link_target, ORANGEFS_NAME_MAX)) {
	230	orangefs_make_bad_inode(inode);
	231	return 1;
26662633 MB	232	}
	233	return 0;
	234	}
	235
8b60785c	236	int orangefs_inode_getattr(struct inode *inode, int flags)
3c9cf98d MB	237	{
	238	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	239	struct orangefs_kernel_op_s *new_op;
9f8fd53c	240	loff_t inode_size;
26662633	241	int ret, type;
3c9cf98d	242
5e4f606e MB	243	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU flags %d\n",
5e4f606e MB	244	__func__, get_khandle_from_ino(inode), flags);
3c9cf98d	245
afd9fb2a	246	again:
5e4f606e	247	spin_lock(&inode->i_lock);
8b60785c	248	/* Must have all the attributes in the mask and be within cache time. */
5e4f606e	249	if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) \|\|
afd9fb2a MB	250	orangefs_inode->attr_valid) {
	251	if (orangefs_inode->attr_valid) {
	252	spin_unlock(&inode->i_lock);
	253	write_inode_now(inode, 1);
	254	goto again;
	255	}
5e4f606e	256	spin_unlock(&inode->i_lock);
8b60785c	257	return 0;
5e4f606e MB	258	}
5e4f606e MB	259	spin_unlock(&inode->i_lock);
71680c18	260
3c9cf98d MB	261	new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
	262	if (!new_op)
	263	return -ENOMEM;
	264	new_op->upcall.req.getattr.refn = orangefs_inode->refn;
68a24a6c MB	265	/*
	266	* Size is the hardest attribute to get. The incremental cost of any
	267	* other attribute is essentially zero.
	268	*/
8b60785c	269	if (flags)
68a24a6c MB	270	new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
	271	else
	272	new_op->upcall.req.getattr.mask =
	273	ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;
3c9cf98d MB	274
	275	ret = service_operation(new_op, __func__,
	276	get_interruptible_flag(inode));
	277	if (ret != 0)
	278	goto out;
	279
afd9fb2a	280	again2:
5e4f606e MB	281	spin_lock(&inode->i_lock);
	282	/* Must have all the attributes in the mask and be within cache time. */
	283	if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) \|\|
afd9fb2a MB	284	orangefs_inode->attr_valid) {
	285	if (orangefs_inode->attr_valid) {
	286	spin_unlock(&inode->i_lock);
	287	write_inode_now(inode, 1);
	288	goto again2;
	289	}
5e4f606e MB	290	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: in cache or dirty\n",
	291	__func__);
	292	ret = 0;
	293	goto out_unlock;
	294	}
	295
8b60785c	296	if (!(flags & ORANGEFS_GETATTR_NEW)) {
480e5ae9 MB	297	ret = orangefs_inode_is_stale(inode,
	298	&new_op->downcall.resp.getattr.attributes,
	299	new_op->downcall.resp.getattr.link_target);
	300	if (ret) {
	301	ret = -ESTALE;
5e4f606e	302	goto out_unlock;
480e5ae9	303	}
3c9cf98d MB	304	}
3c9cf98d MB	305
480e5ae9 MB	306	type = orangefs_inode_type(new_op->
480e5ae9 MB	307	downcall.resp.getattr.attributes.objtype);
26662633	308	switch (type) {
3c9cf98d MB	309	case S_IFREG:
	310	inode->i_flags = orangefs_inode_flags(&new_op->
	311	downcall.resp.getattr.attributes);
8b60785c	312	if (flags) {
68a24a6c MB	313	inode_size = (loff_t)new_op->
68a24a6c MB	314	downcall.resp.getattr.attributes.size;
68a24a6c	315	inode->i_size = inode_size;
9f8fd53c MB	316	inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
9f8fd53c MB	317	attributes.blksize);
68a24a6c MB	318	inode->i_bytes = inode_size;
68a24a6c MB	319	inode->i_blocks =
9f8fd53c	320	(inode_size + 512 - inode_size % 512)/512;
68a24a6c	321	}
3c9cf98d MB	322	break;
3c9cf98d MB	323	case S_IFDIR:
8b60785c	324	if (flags) {
68a24a6c	325	inode->i_size = PAGE_SIZE;
68a24a6c	326	inode_set_bytes(inode, inode->i_size);
68a24a6c	327	}
3c9cf98d MB	328	set_nlink(inode, 1);
	329	break;
	330	case S_IFLNK:
8b60785c	331	if (flags & ORANGEFS_GETATTR_NEW) {
3c9cf98d MB	332	inode->i_size = (loff_t)strlen(new_op->
3c9cf98d MB	333	downcall.resp.getattr.link_target);
2eacea74	334	ret = strscpy(orangefs_inode->link_target,
3c9cf98d MB	335	new_op->downcall.resp.getattr.link_target,
3c9cf98d MB	336	ORANGEFS_NAME_MAX);
2eacea74 MB	337	if (ret == -E2BIG) {
2eacea74 MB	338	ret = -EIO;
5e4f606e	339	goto out_unlock;
2eacea74	340	}
e8da254c	341	inode->i_link = orangefs_inode->link_target;
3c9cf98d MB	342	}
3c9cf98d MB	343	break;
480e5ae9 MB	344	/* i.e. -1 */
	345	default:
	346	/* XXX: ESTALE? This is what is done if it is not new. */
	347	orangefs_make_bad_inode(inode);
	348	ret = -ESTALE;
5e4f606e	349	goto out_unlock;
3c9cf98d MB	350	}
	351
	352	inode->i_uid = make_kuid(&init_user_ns, new_op->
	353	downcall.resp.getattr.attributes.owner);
	354	inode->i_gid = make_kgid(&init_user_ns, new_op->
	355	downcall.resp.getattr.attributes.group);
	356	inode->i_atime.tv_sec = (time64_t)new_op->
	357	downcall.resp.getattr.attributes.atime;
	358	inode->i_mtime.tv_sec = (time64_t)new_op->
	359	downcall.resp.getattr.attributes.mtime;
	360	inode->i_ctime.tv_sec = (time64_t)new_op->
	361	downcall.resp.getattr.attributes.ctime;
	362	inode->i_atime.tv_nsec = 0;
	363	inode->i_mtime.tv_nsec = 0;
	364	inode->i_ctime.tv_nsec = 0;
	365
	366	/* special case: mark the root inode as sticky */
26662633	367	inode->i_mode = type \| (is_root_handle(inode) ? S_ISVTX : 0) \|
3c9cf98d MB	368	orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
3c9cf98d MB	369
1d503617 MB	370	orangefs_inode->getattr_time = jiffies +
1d503617 MB	371	orangefs_getattr_timeout_msecs*HZ/1000;
3c9cf98d	372	ret = 0;
5e4f606e MB	373	out_unlock:
5e4f606e MB	374	spin_unlock(&inode->i_lock);
3c9cf98d MB	375	out:
	376	op_release(new_op);
	377	return ret;
	378	}
	379
5859d77e MB	380	int orangefs_inode_check_changed(struct inode *inode)
	381	{
	382	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
	383	struct orangefs_kernel_op_s *new_op;
	384	int ret;
	385
	386	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
	387	get_khandle_from_ino(inode));
	388
	389	new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
	390	if (!new_op)
	391	return -ENOMEM;
	392	new_op->upcall.req.getattr.refn = orangefs_inode->refn;
	393	new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE \|
	394	ORANGEFS_ATTR_SYS_LNK_TARGET;
	395
	396	ret = service_operation(new_op, __func__,
	397	get_interruptible_flag(inode));
	398	if (ret != 0)
	399	goto out;
	400
480e5ae9	401	ret = orangefs_inode_is_stale(inode,
26662633 MB	402	&new_op->downcall.resp.getattr.attributes,
26662633 MB	403	new_op->downcall.resp.getattr.link_target);
5859d77e MB	404	out:
	405	op_release(new_op);
	406	return ret;
	407	}
	408
f7be4ee0	409	/*
8bb8aefd	410	* issues a orangefs setattr request to make sure the new attribute values
f7be4ee0 MM	411	* take effect if successful. returns 0 on success; -errno otherwise
f7be4ee0 MM	412	*/
afd9fb2a	413	int orangefs_inode_setattr(struct inode *inode)
f7be4ee0	414	{
8bb8aefd YL	415	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
8bb8aefd YL	416	struct orangefs_kernel_op_s *new_op;
f7be4ee0 MM	417	int ret;
f7be4ee0 MM	418
8bb8aefd	419	new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
f7be4ee0 MM	420	if (!new_op)
	421	return -ENOMEM;
	422
afd9fb2a MB	423	spin_lock(&inode->i_lock);
	424	new_op->upcall.uid = from_kuid(&init_user_ns, orangefs_inode->attr_uid);
	425	new_op->upcall.gid = from_kgid(&init_user_ns, orangefs_inode->attr_gid);
8bb8aefd	426	new_op->upcall.req.setattr.refn = orangefs_inode->refn;
afd9fb2a MB	427	copy_attributes_from_inode(inode,
	428	&new_op->upcall.req.setattr.attributes);
	429	orangefs_inode->attr_valid = 0;
	430	spin_unlock(&inode->i_lock);
f7be4ee0	431
afd9fb2a MB	432	ret = service_operation(new_op, __func__,
	433	get_interruptible_flag(inode));
	434	gossip_debug(GOSSIP_UTILS_DEBUG,
	435	"orangefs_inode_setattr: returning %d\n", ret);
	436	if (ret)
	437	orangefs_make_bad_inode(inode);
f7be4ee0	438
f7be4ee0 MM	439	op_release(new_op);
f7be4ee0 MM	440
a55f2d86	441	if (ret == 0)
8bbb20a8	442	orangefs_inode->getattr_time = jiffies - 1;
f7be4ee0 MM	443	return ret;
	444	}
	445
54804949 MM	446	/*
54804949 MM	447	* The following is a very dirty hack that is now a permanent part of the
8bb8aefd	448	* ORANGEFS protocol. See protocol.h for more error definitions.
54804949	449	*/
894ac432	450
8bb8aefd	451	/* The order matches include/orangefs-types.h in the OrangeFS source. */
894ac432	452	static int PINT_errno_mapping[] = {
54804949 MM	453	0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM,
	454	EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE,
	455	EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG,
	456	ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH,
	457	EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM,
	458	EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE,
	459	ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE,
	460	EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS,
	461	ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY,
	462	EACCES, ECONNRESET, ERANGE
894ac432	463	};
f7be4ee0	464
8bb8aefd	465	int orangefs_normalize_to_errno(__s32 error_code)
f7be4ee0	466	{
54804949 MM	467	__u32 i;
54804949 MM	468
894ac432 MB	469	/* Success */
	470	if (error_code == 0) {
	471	return 0;
54804949 MM	472	/*
	473	* This shouldn't ever happen. If it does it should be fixed on the
	474	* server.
	475	*/
894ac432	476	} else if (error_code > 0) {
bc8282a7	477	gossip_err("orangefs: error status received.\n");
8bb8aefd	478	gossip_err("orangefs: assuming error code is inverted.\n");
f7be4ee0 MM	479	error_code = -error_code;
	480	}
	481
54804949	482	/*
8bb8aefd	483	* XXX: This is very bad since error codes from ORANGEFS may not be
54804949 MM	484	* suitable for return into userspace.
54804949 MM	485	*/
894ac432	486
54804949	487	/*
8bb8aefd	488	* Convert ORANGEFS error values into errno values suitable for return
54804949 MM	489	* from the kernel.
54804949 MM	490	*/
8bb8aefd	491	if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) {
894ac432	492	if (((-error_code) &
8bb8aefd YL	493	(ORANGEFS_ERROR_NUMBER_BITS\|ORANGEFS_NON_ERRNO_ERROR_BIT\|
8bb8aefd YL	494	ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) {
f7be4ee0 MM	495	/*
	496	* cancellation error codes generally correspond to
	497	* a timeout from the client's perspective
	498	*/
	499	error_code = -ETIMEDOUT;
	500	} else {
	501	/* assume a default error code */
95f5f88f MM	502	gossip_err("%s: bad error code :%d:.\n",
	503	__func__,
	504	error_code);
f7be4ee0 MM	505	error_code = -EINVAL;
f7be4ee0 MM	506	}
894ac432	507
8bb8aefd YL	508	/* Convert ORANGEFS encoded errno values into regular errno values. */
	509	} else if ((-error_code) & ORANGEFS_ERROR_BIT) {
	510	i = (-error_code) & ~(ORANGEFS_ERROR_BIT\|ORANGEFS_ERROR_CLASS_BITS);
296200d3	511	if (i < ARRAY_SIZE(PINT_errno_mapping))
894ac432 MB	512	error_code = -PINT_errno_mapping[i];
	513	else
	514	error_code = -EINVAL;
	515
54804949	516	/*
8bb8aefd	517	* Only ORANGEFS protocol error codes should ever come here. Otherwise
54804949 MM	518	* there is a bug somewhere.
54804949 MM	519	*/
894ac432	520	} else {
95f5f88f	521	gossip_err("%s: unknown error code.\n", __func__);
cf546ab6	522	error_code = -EINVAL;
f7be4ee0 MM	523	}
	524	return error_code;
	525	}
	526
	527	#define NUM_MODES 11
8bb8aefd	528	__s32 ORANGEFS_util_translate_mode(int mode)
f7be4ee0 MM	529	{
	530	int ret = 0;
	531	int i = 0;
	532	static int modes[NUM_MODES] = {
	533	S_IXOTH, S_IWOTH, S_IROTH,
	534	S_IXGRP, S_IWGRP, S_IRGRP,
	535	S_IXUSR, S_IWUSR, S_IRUSR,
	536	S_ISGID, S_ISUID
	537	};
8bb8aefd YL	538	static int orangefs_modes[NUM_MODES] = {
	539	ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ,
	540	ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ,
	541	ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ,
	542	ORANGEFS_G_SGID, ORANGEFS_U_SUID
f7be4ee0 MM	543	};
	544
	545	for (i = 0; i < NUM_MODES; i++)
	546	if (mode & modes[i])
8bb8aefd	547	ret \|= orangefs_modes[i];
f7be4ee0 MM	548
	549	return ret;
	550	}
	551	#undef NUM_MODES