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This is a standalone-wrapper for update-pkginfo, which is
usually called from create-tarball. It basically repeats
some functionality of create-tarball.
Michael
The problem with msg-type pipes is that we have to return short reads when a
message ends before the read request. When reading from the unix domain socket,
the message limits are lost. So we would happily return more than a message,
which confuses for example the s4 rpc client horribly. I'd expect other np rpc
clients also to blow up over this.
The real solution is to properly implement a two-byte length field per message
on the unix domain socket, but this requires more changes there. And as we
right now only serve DCE/RPC over the named pipes, this implements a hack that
looks into the fragment headers to figure out hdr.frag_len.
OneFS provides the bulk directory enumeration syscall readdirplus(). This
syscall has the same semantics as the NFSv3 READDIRPLUS command, returning
a batch of directory entries with prefetched stat information via one
syscall.
This commit wraps the readdirplus() call in the existing POSIX
readdir/seekdir VFS interface. By default a batch of 128 directory entries
are optimistically read from the kernel into a global cache, and fed to
iterative calls of VFS_OP_READDIR.
The global buffers could be avoided in the future by hanging connection
specific buffers off the conn struct.
Added new parameter "onefs:use readdirplus" which toggles usage of this
code on or off.
By default this VFS call is a NOOP, but the onefs vfs module takes advantage
of it to initialize direntry search caches at the beginning of each
TRANS2_FIND_FIRST, TRANS2_FIND_NEXT, SMBffirst, SMBsearch, and SMBunique
* VFS_OP_READDIR can now provide stat information, take advantage of it
if it's available
* is_visible_file(): optimistically expect the provided stat buffer is
already valid
* dptr_ReadDirName(): refactor code for easier readability, functionality
is the same
