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when we get eof, stop the loop immidiately and do not
rely on the read to eventually return an error.
when convM2S() fails to decode the message, error out
and stop the loop. there is no point in continuing.
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the ini buffer was not reset when we got eof in the message
body read causing a endless loop. instead of defining our
own read9pmsg() function, just handle the first read specially
when we consumed the first 4 bytes for the "impo" protocol
escape check.
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path)
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when we got a bad root tree, we should speak the right language
and return a Rerror response instead of crapping ascii into
the 9p conversation.
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the first 8 bytes
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in backwards mode, the roles of the aan filters need to be
reversed. add "-n address" option to import to override the
announce address for the aan server part (default tcp!*!0).
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remove impossible checks, rewrite as while loop.
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dont use 0 for nil
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netfd is initially zero (stdin), when filter() closes fd0,
fd0 is free to be reused. this causes problems with openmount()
that assumes sfd being >2.
instead, we dup the our pipe end over netfd, and close the pipe.
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shared by listen
exportfs used pid of slave proc as rendezvous tag. when we
changed it to use Proc* memory address, there where tag
collisions because listen didnt fork the rendezvous group (bug!).
for now, just do rfork(RFREND) in main just in case.
will fix aux/listen in a follow up changeset.
--
cinap
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getting strange tag mismatches on some machines. needs
to be debugged. until then, reverting the change.
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get rid of the service buffer limit. keep service buffers
on a global freelist protected by lock.
dont fatal when we hit the process limit. instead, just
abort the rpc with an error.
handle rendezvous() interrupts.
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just closing the pipe isnt enough, we have to
close all remaining file descriptors except sfd
before executing sub exportfs.
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initstr error
fork child exportfs with new rendezvous group.
fix missing close of pipe filedescriptors on error.
fix missing close of other end of pipe in child.
dont bark when we get eof on the first init string read.
this condition can happen when unmount opens and
immidiately closes a exported srv file.
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Fix the behavior of exportfs -r.
Check the return of chdir(srv) to prevent exporting accidentally
the current working directory when the directory specified
with option -r doesn't exist.
Also fix at the same time the missing trailing \n in error
messages printed just before exits().
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various fileservers do not check if the message size is too small
(they subtract IOHDRSZ later from it to calculate iounit) which
can overflow.
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