vfs/vfs_support.h Kernel.framework

Default no-op implementation of the VNOP_CREATE vnode operation (create a regular file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0. On DIAGNOSTIC kernels, panics if the component name has no pathname buffer (HASBUF clear).

Default error implementation of the VNOP_CREATE vnode operation (create a regular file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_WHITEOUT vnode operation (create, remove, or look up a whiteout directory entry). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_WHITEOUT vnode operation (create, remove, or look up a whiteout directory entry). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_MKNOD vnode operation (create a device special file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0. On DIAGNOSTIC kernels, panics if the component name has no pathname buffer (HASBUF clear).

Default error implementation of the VNOP_MKNOD vnode operation (create a device special file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_OPEN vnode operation (open a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_OPEN vnode operation (open a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_CLOSE vnode operation (close a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_CLOSE vnode operation (close a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_ACCESS vnode operation (check access permissions on a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_ACCESS vnode operation (check access permissions on a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_GETATTR vnode operation (read vnode attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_GETATTR vnode operation (read vnode attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_SETATTR vnode operation (set vnode attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_SETATTR vnode operation (set vnode attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_READ vnode operation (read from a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_READ vnode operation (read from a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_WRITE vnode operation (write to a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_WRITE vnode operation (write to a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_IOCTL vnode operation (perform a device-specific control operation). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_IOCTL vnode operation (perform a device-specific control operation). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_SELECT vnode operation (select/poll support). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_SELECT vnode operation (select/poll support). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_EXCHANGE vnode operation (atomically exchange the data of two files, as for exchangedata(2)). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_EXCHANGE vnode operation (atomically exchange the data of two files, as for exchangedata(2)). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default implementation of the VNOP_REVOKE vnode operation (revoke access to a vnode, as for revoke(2)). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unlike most nop_* routines this one does real work: it calls vn_revoke(vp, flags, context) to perform the revocation and returns its result.

Default error implementation of the VNOP_REVOKE vnode operation (revoke access to a vnode, as for revoke(2)). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. First performs the revocation via nop_revoke (which calls vn_revoke), then returns ENOTSUP.

Default no-op implementation of the VNOP_MMAP vnode operation (memory-map a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_MMAP vnode operation (memory-map a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_FSYNC vnode operation (flush file data to stable storage). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_FSYNC vnode operation (flush file data to stable storage). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_REMOVE vnode operation (remove a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_REMOVE vnode operation (remove a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_LINK vnode operation (create a hard link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_LINK vnode operation (create a hard link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_RENAME vnode operation (rename a file system object). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_RENAME vnode operation (rename a file system object). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_MKDIR vnode operation (create a directory). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_MKDIR vnode operation (create a directory). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_RMDIR vnode operation (remove a directory). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_RMDIR vnode operation (remove a directory). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_SYMLINK vnode operation (create a symbolic link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_SYMLINK vnode operation (create a symbolic link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_READDIR vnode operation (read directory entries). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_READDIR vnode operation (read directory entries). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_READDIRATTR vnode operation (read directory entries together with their attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_actualcount and a_eofflag, returning no entries, and returns 0.

Default error implementation of the VNOP_READDIRATTR vnode operation (read directory entries together with their attributes). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_actualcount and a_eofflag via nop_readdirattr, then returns ENOTSUP.

Default no-op implementation of the VNOP_READLINK vnode operation (read the target of a symbolic link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_READLINK vnode operation (read the target of a symbolic link). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_INACTIVE vnode operation (handle the loss of the last usecount reference on a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_INACTIVE vnode operation (handle the loss of the last usecount reference on a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_RECLAIM vnode operation (reclaim a vnode for reuse). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_RECLAIM vnode operation (reclaim a vnode for reuse). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_STRATEGY vnode operation (perform block I/O described by a buf). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_STRATEGY vnode operation (perform block I/O described by a buf). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_PATHCONF vnode operation (return pathconf(2) configuration values). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_PATHCONF vnode operation (return pathconf(2) configuration values). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_ADVLOCK vnode operation (apply or check an advisory record lock). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_ADVLOCK vnode operation (apply or check an advisory record lock). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_ALLOCATE vnode operation (preallocate storage for a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_bytesallocated, indicating that no space was allocated, and returns 0.

Default error implementation of the VNOP_ALLOCATE vnode operation (preallocate storage for a file). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_bytesallocated via nop_allocate, then returns ENOTSUP.

Default implementation of the VNOP_BWRITE vnode operation (write a buffer to backing store). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unlike most nop_* routines this one does real work: it passes the buffer to buf_bwrite() and returns its result.

Default error implementation of the VNOP_BWRITE vnode operation (write a buffer to backing store). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default implementation of the VNOP_PAGEIN vnode operation (page data in from a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unless UPL_NOCOMMIT is set in a_flags, aborts the supplied UPL range with ubc_upl_abort_range(UPL_ABORT_FREE_ON_EMPTY | UPL_ABORT_ERROR) so the pages are not left busy. As an exception to the nop_* convention, returns EINVAL rather than 0.

Default error implementation of the VNOP_PAGEIN vnode operation (page data in from a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unless UPL_NOCOMMIT is set in a_flags, aborts the supplied UPL range with ubc_upl_abort_range(UPL_ABORT_FREE_ON_EMPTY | UPL_ABORT_ERROR) so the pages are not left busy, then returns ENOTSUP.

Default implementation of the VNOP_PAGEOUT vnode operation (page data out to a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unless UPL_NOCOMMIT is set in a_flags, aborts the supplied UPL range with ubc_upl_abort_range(UPL_ABORT_FREE_ON_EMPTY | UPL_ABORT_ERROR) so the pages are not left busy. As an exception to the nop_* convention, returns EINVAL rather than 0.

Default error implementation of the VNOP_PAGEOUT vnode operation (page data out to a vnode). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Unless UPL_NOCOMMIT is set in a_flags, aborts the supplied UPL range with ubc_upl_abort_range(UPL_ABORT_FREE_ON_EMPTY | UPL_ABORT_ERROR) so the pages are not left busy, then returns ENOTSUP.

Default no-op implementation of the VNOP_SEARCHFS vnode operation (perform a searchfs(2) catalog search). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_nummatches, reporting no matches, and returns 0.

Default error implementation of the VNOP_SEARCHFS vnode operation (perform a searchfs(2) catalog search). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores 0 through a_nummatches via nop_searchfs, then returns ENOTSUP.

Default no-op implementation of the VNOP_COPYFILE vnode operation (copy a file, as for copyfile). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_COPYFILE vnode operation (copy a file, as for copyfile). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_BLKTOOFF vnode operation (convert a logical block number to a file offset). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores (off_t)-1 through a_offset to mark the translation as failed, then returns 0.

Default error implementation of the VNOP_BLKTOOFF vnode operation (convert a logical block number to a file offset). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores (off_t)-1 through a_offset via nop_blktooff, then returns ENOTSUP.

Default no-op implementation of the VNOP_OFFTOBLK vnode operation (convert a file offset to a logical block number). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores (daddr64_t)-1 through a_lblkno to mark the translation as failed, then returns 0.

Default error implementation of the VNOP_OFFTOBLK vnode operation (convert a file offset to a logical block number). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Stores (daddr64_t)-1 through a_lblkno via nop_offtoblk, then returns ENOTSUP.

Default no-op implementation of the VNOP_BLOCKMAP vnode operation (map a file offset to a physical block number). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_BLOCKMAP vnode operation (map a file offset to a physical block number). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.

Default no-op implementation of the VNOP_MONITOR vnode operation (monitor a vnode for changes on behalf of kqueue/kevent). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Does nothing and returns 0.

Default error implementation of the VNOP_MONITOR vnode operation (monitor a vnode for changes on behalf of kqueue/kevent). One of the default vnode operation implementations in vfs_support.c, which a file system plugin can install in its VNOP table for operations it does not implement; by convention nop_* routines return 0 (success) and err_* routines return ENOTSUP. Returns ENOTSUP to indicate the file system does not support the operation.