fixes a memory leak that occurs when a readdir loop doesn't complete, since the cookie was only freed on the last readdir upcall. by storing the cookie with nfs41_open_state, we can avoid passing the cookie to the driver and back, and not worry about having to free it separately
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
added nfs41_file_info.symlink_dir to replace readdir's info.cansettime hack. when nfs_file_info_to_attributes() finds info.type==NF4LNK, it adds the FILE_ATTRIBUTE_DIRECTORY flag if info.symlink_dir is set
renamed nfs41_symlink_follow() to nfs41_symlink_target()
generalized lookup_symlink() into nfs41_symlink_follow(), which is called by readdir and open (also avoids an extra lookup)
added queries for symlink target type when doing normal GETATTRs (getattr.c) and opens with OPEN_REPARSE_POINT set (open.c)
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
added optional symlink argument to nfs41_create(), used when type is NF4LNK
changed createttype4.u.lnk.linkdata from char[] to const char* and updated encoding in nfs41_xdr.c
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
no longer depends on nfs41_open_state or open_upcall_args
renamed to nfs41_symlink_follow() and added prototype to nfs41_ops.h
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
the link part of basic test7 was failing because LINK's target was still cached as a negative entry, leading to the error "can't stat newfile.0 after link". the solution is to replace the negative entry with the real fh and attributes of the target file
so instead of doing RESTOREFH+GETATTR on the source file and calling nfs41_attr_cache_update(), nfs41_link() uses LOOKUP+GETATTR+GETFH to get attributes for the target file and passes them to nfs41_name_cache_insert() along with dst_dir's changeinfo. because the source and target file will have the same fileid attribute, nfs41_name_cache_insert() will update the attributes of both at the same time. added the target file as an optional return parameter
Signed-off-by: Casey Bodley <cbodley@umich.edu>
