/* SPDX-License-Identifier: GPL-2.0 */ /* * NFSv4 file attributes supported by this implementation */ #ifndef _LINUX_NFSD_ATTR4_H #define _LINUX_NFSD_ATTR4_H #include #include /* * The following attributes are not implemented by NFSD: * ARCHIVE (deprecated anyway) * HIDDEN (unlikely to be supported any time soon) * MIMETYPE (unlikely to be supported any time soon) * QUOTA_* (unlikely to be supported any time soon) * SYSTEM (unlikely to be supported any time soon) * TIME_BACKUP (unlikely to be supported any time soon) */ #define NFSD4_SUPPORTED_ATTRS_WORD0 \ (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) #define NFSD4_SUPPORTED_ATTRS_WORD1 \ (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \ | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) #define NFSD4_SUPPORTED_ATTRS_WORD2 0 /* 4.1 */ #ifdef CONFIG_NFSD_PNFS #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES #define PNFSD_SUPPORTED_ATTRS_WORD2 \ (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) #else #define PNFSD_SUPPORTED_ATTRS_WORD1 0 #define PNFSD_SUPPORTED_ATTRS_WORD2 0 #endif /* CONFIG_NFSD_PNFS */ #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ NFSD4_SUPPORTED_ATTRS_WORD0 #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ FATTR4_WORD2_SUPPATTR_EXCLCREAT) /* 4.2 */ #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL #else #define NFSD4_2_SECURITY_ATTRS 0 #endif #ifdef CONFIG_NFSD_V4_POSIX_ACLS #define NFSD4_2_POSIX_ACL_ATTRS \ (FATTR4_WORD2_ACL_TRUEFORM | \ FATTR4_WORD2_ACL_TRUEFORM_SCOPE | \ FATTR4_WORD2_POSIX_DEFAULT_ACL | \ FATTR4_WORD2_POSIX_ACCESS_ACL) #else #define NFSD4_2_POSIX_ACL_ATTRS 0 #endif #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ FATTR4_WORD2_MODE_UMASK | \ FATTR4_WORD2_CLONE_BLKSIZE | \ NFSD4_2_SECURITY_ATTRS | \ FATTR4_WORD2_XATTR_SUPPORT | \ FATTR4_WORD2_TIME_DELEG_ACCESS | \ FATTR4_WORD2_TIME_DELEG_MODIFY | \ FATTR4_WORD2_OPEN_ARGUMENTS | \ NFSD4_2_POSIX_ACL_ATTRS) /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ #define NFSD_WRITEONLY_ATTRS_WORD1 \ (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) /* * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add * a writeable attribute here without also adding code to parse it to * nfsd4_decode_fattr4(). */ #define NFSD_WRITEABLE_ATTRS_WORD0 \ (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) #define NFSD_WRITEABLE_ATTRS_WORD1 \ (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \ | FATTR4_WORD1_TIME_MODIFY_SET) #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ FATTR4_WORD2_SECURITY_LABEL #else #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 #endif #ifdef CONFIG_NFSD_V4_POSIX_ACLS #define MAYBE_FATTR4_WORD2_POSIX_ACL_ATTRS \ FATTR4_WORD2_POSIX_DEFAULT_ACL | FATTR4_WORD2_POSIX_ACCESS_ACL #else #define MAYBE_FATTR4_WORD2_POSIX_ACL_ATTRS 0 #endif #define NFSD_WRITEABLE_ATTRS_WORD2 \ (FATTR4_WORD2_MODE_UMASK \ | MAYBE_FATTR4_WORD2_SECURITY_LABEL \ | FATTR4_WORD2_TIME_DELEG_ACCESS \ | FATTR4_WORD2_TIME_DELEG_MODIFY \ | MAYBE_FATTR4_WORD2_POSIX_ACL_ATTRS \ ) #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ NFSD_WRITEABLE_ATTRS_WORD0 /* * we currently store the exclusive create verifier in the v_{a,m}time * attributes so the client can't set these at create time using EXCLUSIVE4_1 */ #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ (NFSD_WRITEABLE_ATTRS_WORD1 & \ ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) /* * The FATTR4_WORD2_TIME_DELEG attributes are not to be allowed for * OPEN(create) with EXCLUSIVE4_1. It doesn't make sense to set a * delegated timestamp on a new file. * * This mask includes NFSv4.2-only attributes (e.g., POSIX ACLs). * Version filtering occurs via nfsd_suppattrs[] before this mask * is applied, so pre-4.2 clients never see unsupported attributes. */ #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ (NFSD_WRITEABLE_ATTRS_WORD2 & \ ~(FATTR4_WORD2_TIME_DELEG_ACCESS | FATTR4_WORD2_TIME_DELEG_MODIFY)) extern const u32 nfsd_suppattrs[3][3]; static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) { return !((bm1[0] & ~bm2[0]) || (bm1[1] & ~bm2[1]) || (bm1[2] & ~bm2[2])); } static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) { return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); } #endif /* _LINUX_NFSD_ATTR4_H */