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superblock: mask getattr requests with supported_attrs

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on creation of a new superblock, construct a bitmap for the default attribute mask to be used for GETATTR and READDIR requests on that filesystem.  mask out any unsupported attributes, and store the bitmap in the field nfs41_superblock.default_getattr

replaced function init_getattr_request() with nfs41_superblock_getattr_mask(), which returns a copy of superblock->default_getattr

removed the locking in nfs41_superblock_supported_attrs() and nfs41_superblock_supported_attrs_exclcreat(), as the supported_attrs and suppattr_exclcreat fields are read-only after the superblock is first initialized.  also factored out their common code into a bitmap_intersect() function in util.h

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2012-04-02 14:22:58 -04:00 • committed by unknown
parent b955b6d3fe
commit c59124dd20
9 changed files with 65 additions and 71 deletions
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2
daemon/readdir.c
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@ -490,7 +490,7 @@ static int handle_readdir(nfs41_upcall *upcall)
fetch_entries:
entry_buf_len = max_buf_len;
init_getattr_request(&attr_request);
nfs41_superblock_getattr_mask(state->file.fh.superblock, &attr_request);
attr_request.arr[0] |= FATTR4_WORD0_RDATTR_ERROR;
if (strchr(args->filter, FILTER_STAR) || strchr(args->filter, FILTER_QM)) {