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If multiple clients are active at once, the following could occur:
* Client #1 unlinks file A
* Client #2 creates file B, which reuses A's inode
* Client #2 sends request to server
* Client #1 sends request to server
* Processing client #2's request creates a mismatch warning for
file A/B.
* Processing client #1's request creates a mismatch warning too.
Note that this can happen even if Client #2 sends its request later,
as there's no intrinsic guarantee of the order in which requests
are processed; any SINGLE client is presumably executing operations
in order, but multiple clients aren't.
Fixing this in rmdir, unlink, and rename.
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It is possible for the database to get out of sync with the
filesystem. Detecting this after the fact can be hard. Provide a
hook for requesting a check.
Also merge in some LD_LIBRARY_PATH fixes.
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Send program name (program_invocation_name from glibc) along with the
tag.
Along the way, restructure the fds/pids/tags arrays to be an array
of client structures in pseudo_server, and add the message type
to the set of things logged -- logging that a message was a ping is
more useful than appending the text "ping" to it. Add support
for type and program to pseudolog.
Add deletion to pseudolog.
Handle usage message formatting when there's an odd number of known
specifiers for pseudolog.
Conflicts:
ChangeLog.txt
pseudo_server.c
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This is a first pass at handling password/group calls, allowing
the use of custom password/group files. In particular, when
chroot()ed to a particular directory, pseudo picks files in
that directory by default, to improve support for the typical
use case where pseudo uses chroot() only to jump into a virtual
target filesystem.
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This allows us to track execution, although the tracking for it
requires some additional thought -- the basic assumption is that we
don't want to canonicalize names into the chroot() directory, but
since all the filename canonicalization assumes that we want this,
that will take some sneaking. It's a little useful as is, though,
so I'm running with it.
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This patch adds support for checking whether a file was opened for
reading, writing, or both, as well as tracking append flags. It is
not very well tested. This is preparation for improved host
contamination checking.
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None of them seem to have been genuine problems, but it's prettier now,
and some were questionable.
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Add chroot() and a large number of things needed to make it work.
The list of intercepted calls is large but not exhaustive.
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* Improve makewrappers handling of function pointer arguments.
* Regenerate wrappers when makewrappers is touched.
* Move path resolution from pseudo_client_op into wrapper
functions.
* Eliminate dependency on PATH_MAX.
* Related cleanup, such as tracking CWD better, and using
the tracked value for getcwd().
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Add the -h (help) option to pseudo, and document -h for both
pseudo and pseudolog.
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Peter Seebach
Peter Seebach