struct NFS41_V_NET_ROOT_EXTENSION now stores only the FILE_FS_ATTRIBUTE_INFORMATION (without the extra buffer space for a name). on QueryVolumeInfo() for FileFsAttributeInformation on the root directory, the FILE_FS_ATTRIBUTE_INFORMATION is copied into the output buffer, and the name is added there. QueryVolumeInfo() only makes upcalls when FileFsAttributeInformation queries are not for the root directory
new function is_root_directory() uses the logic from Set/GetReparsePoint() to determine whether it's operating on the root directory
moved logic from volume.c:handle_volume_attributes() to superblock.c:nfs41_superblock_fs_attributes(). the mount downcall copies the FILE_FS_ATTRIBUTE_INFORMATION buffer down to the driver. the driver reads this buffer directly into VNetRootContext->FsAttrs
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
adds a new function nfs41_superblock_getattr(), which adds an OPENATTR call with createdir=0 after the GETATTR to check for named attribute support. OPENATTR will either return ERR_NOTSUPP if not supported, or OK/ERR_NOENT depending on whether named attributes are present on the given file. we can't query for the 'named_attr' attribute, because it only tells us whether the given file contains named attributes
if named attributes are supported on a superblock, it will return FILE_SUPPORTS_EXTENDED_ATTRIBUTES for associated volume queries
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
added 2011 year to the copyright line
added authors info to the license
added UofM license to libtirpc files that we modified
(but i probably missed some)
every upcall (except few) pass session and open_state pointer, so
add that to marshal_nfs41_header() in the driver. remove passing
of session and open_state elsewhere in marshal functions.
in the deamon, upcall.c now reads and stores pointers to session
and open_state in nfs41_upcall datastructure instead of having
each individual upcall store their own pointers. setattrl
and readdir args keeping pointer because the rest of the code
uses them a lot.
in upcall_parse() up refcounts on session and open_state if
valid handles were passed in. down refcounts upcall_cleanup() as
before. but need to be careful with count value for mount and open
upcalls. we need to take an extra ref because upcall_cleanup() now
will always decrement it.
very similar to the issue with nfs41_open_state, an abandoned upcall could outlive its mount. to prevent their nfs41_root from being freed, upcalls need to hold a reference until they're finished. this also keeps all of its clients/sessions/rpc connections alive
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
added call to upcall_cleanup() after both upcall_marshall() and upcall_cancel()
individual upcall operations define their nfs41_upcall_op structs locally, instead of putting tons of function prototypes in upcall.c
made the upcall_marshall() function optional; most marshall functions are noops
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
when open parsing fails, we were still returning upcall.status==NO_ERROR, so the driver assumed the open succeeded. other operations then sent up an open_state==NULL, and crashed the daemon. when upcall_parse() returns an error, set upcall.status to notify the driver
upcall_parse() prints a 'parsing of upcall <name> failed with <error>.' message on failure, so i removed redundant messages from the individual upcall parsing functions
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
moved the FileSystemName definition back down to the kernel, so the daemon is no longer responsible for setting it. the driver uses the string length to calculate the buffer size needed for NFS41_V_NET_ROOT_EXTENSION.FsAttrs, and copies in the FileSystemName after the first successful volume attributes upcall
Signed-off-by: Casey Bodley <cbodley@umich.edu>
added FILE_FS_ATTRIBUTE_INFORMATION and FileSystemAttributes flags to from_kernel.h
queries case_preserving, case_insensitive attributes to fill in FileSystemAttributes, and uses #defines from nfs41_const.h for MaximumComponentNameLength and FileSystemName
Signed-off-by: Casey Bodley <cbodley@umich.edu>
added FS_INFORMATION_CLASS, FILE_FS_SIZE_INFORMATION, FILE_FS_FULL_SIZE_INFORMATION to from_kernel.h
moved get_volume_size_info() and byte->unit conversion up to the daemon
Signed-off-by: Casey Bodley <cbodley@umich.edu>
