90 	int err = 0;  in nfsd_cross_mnt()  local
92 	err = follow_down(&path);  in nfsd_cross_mnt()
93 	if (err < 0)  in nfsd_cross_mnt()
98 		err = PTR_ERR(exp2);  in nfsd_cross_mnt()
106 		if (err == -ENOENT && !(exp->ex_flags & NFSEXP_V4ROOT))  in nfsd_cross_mnt()
107 			err = 0;  in nfsd_cross_mnt()
128 	return err;  in nfsd_cross_mnt()
257 	__be32 err;  in nfsd_lookup()  local
259 	err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);  in nfsd_lookup()
260 	if (err)  in nfsd_lookup()
261 		return err;  in nfsd_lookup()
262 	err = nfsd_lookup_dentry(rqstp, fhp, name, len, &exp, &dentry);  in nfsd_lookup()
263 	if (err)  in nfsd_lookup()
264 		return err;  in nfsd_lookup()
265 	err = check_nfsd_access(exp, rqstp);  in nfsd_lookup()
266 	if (err)  in nfsd_lookup()
272 	err = fh_compose(resfh, exp, dentry, fhp);  in nfsd_lookup()
273 	if (!err && d_really_is_negative(dentry))  in nfsd_lookup()
274 		err = nfserr_noent;  in nfsd_lookup()
278 	return err;  in nfsd_lookup()
371 		__be32 err;  in nfsd_get_write_access()  local
373 		err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry,  in nfsd_get_write_access()
375 		if (err)  in nfsd_get_write_access()
376 			return err;  in nfsd_get_write_access()
405 	__be32		err;  in nfsd_setattr()  local
419 	err = fh_verify(rqstp, fhp, ftype, accmode);  in nfsd_setattr()
420 	if (err)  in nfsd_setattr()
445 		err = nfsd_get_write_access(rqstp, fhp, iap);  in nfsd_setattr()
446 		if (err)  in nfsd_setattr()
464 		err = nfserr_notsync;  in nfsd_setattr()
471 	err = nfserrno(host_err);  in nfsd_setattr()
476 	if (!err)  in nfsd_setattr()
477 		err = nfserrno(commit_metadata(fhp));  in nfsd_setattr()
479 	return err;  in nfsd_setattr()
541 	__be32 err;  in nfsd4_vfs_fallocate()  local
547 	err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, NFSD_MAY_WRITE);  in nfsd4_vfs_fallocate()
548 	if (err)  in nfsd4_vfs_fallocate()
549 		return err;  in nfsd4_vfs_fallocate()
685 	__be32		err;  in nfsd_open()  local
703 	err = fh_verify(rqstp, fhp, type, may_flags);  in nfsd_open()
704 	if (err)  in nfsd_open()
714 	err = nfserr_perm;  in nfsd_open()
758 	err = nfserrno(host_err);  in nfsd_open()
761 	return err;  in nfsd_open()
930 	int err = 0;  in wait_for_concurrent_writes()  local
941 		err = vfs_fsync(file, 0);  in wait_for_concurrent_writes()
945 	return err;  in wait_for_concurrent_writes()
956 	__be32			err = 0;  in nfsd_vfs_write()  local
1004 		err = 0;  in nfsd_vfs_write()
1006 		err = nfserrno(host_err);  in nfsd_vfs_write()
1009 	return err;  in nfsd_vfs_write()
1016 	__be32 err;  in nfsd_get_tmp_read_open()  local
1018 	err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, file);  in nfsd_get_tmp_read_open()
1019 	if (err)  in nfsd_get_tmp_read_open()
1020 		return err;  in nfsd_get_tmp_read_open()
1056 	__be32 err;  in nfsd_read()  local
1058 	err = nfsd_get_tmp_read_open(rqstp, fhp, &file, &ra);  in nfsd_read()
1059 	if (err)  in nfsd_read()
1060 		return err;  in nfsd_read()
1062 	err = nfsd_vfs_read(rqstp, file, offset, vec, vlen, count);  in nfsd_read()
1066 	return err;  in nfsd_read()
1079 	__be32			err = 0;  in nfsd_write()  local
1082 		err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry,  in nfsd_write()
1084 		if (err)  in nfsd_write()
1086 		err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen, cnt,  in nfsd_write()
1089 		err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_WRITE, &file);  in nfsd_write()
1090 		if (err)  in nfsd_write()
1094 			err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen,  in nfsd_write()
1099 	return err;  in nfsd_write()
1118 	__be32		err = nfserr_inval;  in nfsd_commit()  local
1128 	err = nfsd_open(rqstp, fhp, S_IFREG,  in nfsd_commit()
1130 	if (err)  in nfsd_commit()
1136 			err = nfserrno(err2);  in nfsd_commit()
1138 			err = nfserr_notsupp;  in nfsd_commit()
1143 	return err;  in nfsd_commit()
1198 	__be32		err;  in nfsd_create()  local
1202 	err = nfserr_perm;  in nfsd_create()
1205 	err = nfserr_exist;  in nfsd_create()
1209 	err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE);  in nfsd_create()
1210 	if (err)  in nfsd_create()
1216 	err = nfserr_notdir;  in nfsd_create()
1234 		err = fh_compose(resfhp, fhp->fh_export, dchild, fhp);  in nfsd_create()
1235 		if (err)  in nfsd_create()
1245 			err = nfserr_io;  in nfsd_create()
1252 	err = nfserr_exist;  in nfsd_create()
1263 	err = nfserr_inval;  in nfsd_create()
1273 	err = 0;  in nfsd_create()
1294 	err = nfsd_create_setattr(rqstp, resfhp, iap);  in nfsd_create()
1304 		err = err2;  in nfsd_create()
1308 	if (!err)  in nfsd_create()
1309 		err = fh_update(resfhp);  in nfsd_create()
1313 	return err;  in nfsd_create()
1316 	err = nfserrno(host_err);  in nfsd_create()
1339 	__be32		err;  in do_nfsd_create()  local
1343 	err = nfserr_perm;  in do_nfsd_create()
1346 	err = nfserr_exist;  in do_nfsd_create()
1351 	err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);  in do_nfsd_create()
1352 	if (err)  in do_nfsd_create()
1360 	err = nfserr_notdir;  in do_nfsd_create()
1380 		err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE);  in do_nfsd_create()
1381 		if (err)  in do_nfsd_create()
1385 	err = fh_compose(resfhp, fhp->fh_export, dchild, fhp);  in do_nfsd_create()
1386 	if (err)  in do_nfsd_create()
1401 		err = 0;  in do_nfsd_create()
1440 			err = nfserr_exist;  in do_nfsd_create()
1468 	err = nfsd_create_setattr(rqstp, resfhp, iap);  in do_nfsd_create()
1474 	if (!err)  in do_nfsd_create()
1475 		err = nfserrno(commit_metadata(fhp));  in do_nfsd_create()
1480 	if (!err)  in do_nfsd_create()
1481 		err = fh_update(resfhp);  in do_nfsd_create()
1488  	return err;  in do_nfsd_create()
1491 	err = nfserrno(host_err);  in do_nfsd_create()
1506 	__be32		err;  in nfsd_readlink()  local
1510 	err = fh_verify(rqstp, fhp, S_IFLNK, NFSD_MAY_NOP);  in nfsd_readlink()
1511 	if (err)  in nfsd_readlink()
1518 	err = nfserr_inval;  in nfsd_readlink()
1534 	err = 0;  in nfsd_readlink()
1536 	return err;  in nfsd_readlink()
1539 	err = nfserrno(host_err);  in nfsd_readlink()
1554 	__be32		err, cerr;  in nfsd_symlink()  local
1557 	err = nfserr_noent;  in nfsd_symlink()
1560 	err = nfserr_exist;  in nfsd_symlink()
1564 	err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE);  in nfsd_symlink()
1565 	if (err)  in nfsd_symlink()
1580 	err = nfserrno(host_err);  in nfsd_symlink()
1581 	if (!err)  in nfsd_symlink()
1582 		err = nfserrno(commit_metadata(fhp));  in nfsd_symlink()
1589 	if (err==0) err = cerr;  in nfsd_symlink()
1591 	return err;  in nfsd_symlink()
1594 	err = nfserrno(host_err);  in nfsd_symlink()
1608 	__be32		err;  in nfsd_link()  local
1611 	err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_CREATE);  in nfsd_link()
1612 	if (err)  in nfsd_link()
1614 	err = fh_verify(rqstp, tfhp, 0, NFSD_MAY_NOP);  in nfsd_link()
1615 	if (err)  in nfsd_link()
1617 	err = nfserr_isdir;  in nfsd_link()
1620 	err = nfserr_perm;  in nfsd_link()
1623 	err = nfserr_exist;  in nfsd_link()
1629 		err = nfserrno(host_err);  in nfsd_link()
1644 	err = nfserr_noent;  in nfsd_link()
1649 		err = nfserrno(commit_metadata(ffhp));  in nfsd_link()
1650 		if (!err)  in nfsd_link()
1651 			err = nfserrno(commit_metadata(tfhp));  in nfsd_link()
1654 			err = nfserr_acces;  in nfsd_link()
1656 			err = nfserrno(host_err);  in nfsd_link()
1664 	return err;  in nfsd_link()
1667 	err = nfserrno(host_err);  in nfsd_link()
1681 	__be32		err;  in nfsd_rename()  local
1684 	err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_REMOVE);  in nfsd_rename()
1685 	if (err)  in nfsd_rename()
1687 	err = fh_verify(rqstp, tfhp, S_IFDIR, NFSD_MAY_CREATE);  in nfsd_rename()
1688 	if (err)  in nfsd_rename()
1697 	err = nfserr_perm;  in nfsd_rename()
1703 		err = nfserrno(host_err);  in nfsd_rename()
1751 	err = nfserrno(host_err);  in nfsd_rename()
1764 	return err;  in nfsd_rename()
1777 	__be32		err;  in nfsd_unlink()  local
1780 	err = nfserr_acces;  in nfsd_unlink()
1783 	err = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_REMOVE);  in nfsd_unlink()
1784 	if (err)  in nfsd_unlink()
1802 		err = nfserr_noent;  in nfsd_unlink()
1818 	err = nfserrno(host_err);  in nfsd_unlink()
1820 	return err;  in nfsd_unlink()
1891 		cdp->err = nfserr_eof; /* will be cleared on successful read */  in nfsd_buffered_readdir()
1924 			if (cdp->err != nfs_ok)  in nfsd_buffered_readdir()
1945 	return cdp->err;  in nfsd_buffered_readdir()
1956 	__be32		err;  in nfsd_readdir()  local
1965 	err = nfsd_open(rqstp, fhp, S_IFDIR, may_flags, &file);  in nfsd_readdir()
1966 	if (err)  in nfsd_readdir()
1971 		err = nfserrno((int)offset);  in nfsd_readdir()
1975 	err = nfsd_buffered_readdir(file, func, cdp, offsetp);  in nfsd_readdir()
1977 	if (err == nfserr_eof || err == nfserr_toosmall)  in nfsd_readdir()
1978 		err = nfs_ok; /* can still be found in ->err */  in nfsd_readdir()
1982 	return err;  in nfsd_readdir()
1992 	__be32 err;  in nfsd_statfs()  local
1994 	err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP | access);  in nfsd_statfs()
1995 	if (!err) {  in nfsd_statfs()
2001 			err = nfserr_io;  in nfsd_statfs()
2003 	return err;  in nfsd_statfs()
2019 	int		err;  in nfsd_permission()  local
2085 	err = inode_permission(inode, acc & (MAY_READ|MAY_WRITE|MAY_EXEC));  in nfsd_permission()
2088 	if (err == -EACCES && S_ISREG(inode->i_mode) &&  in nfsd_permission()
2091 		err = inode_permission(inode, MAY_EXEC);  in nfsd_permission()
2093 	return err? nfserrno(err) : 0;  in nfsd_permission()