| Age | Commit message (Collapse) | Author |
|---|
|
an environment variable across fork().
This does a couple of things. One is, move the fork/vfork and execl*
functions out of the standard wrapper environment. Having done that,
the execl*() wrappers are rewritten so they can use real_execv*()
when running in antimagic mode.
This allows us to run pseudo entirely in antimagic mode. Which is
handy, because we also add support for enabling/disabling antimagic
mode in the child process on a fork, using an additional hook for
this in the pseudo_client_init() routine. The redone fork() wrapper
now calls pseudo_client_init() in the child process after a
successful fork even if it's in antimagic mode already.
This is not yet well-tested.
|
|
are generated from text files and templates, making it now (we hope)
impossible for the list of strings to get out of sync with the
enum.
|
|
|
|
bug in the speculative-unlink operation.
The intent is to mark and then confirm or cancel the delete. This
removes the quirk where we tried to stash old database entries,
which didn't handle directories anyway; "rmdir non-empty-directory"
is a bit too common a case to dismiss as unthinkable.
|
|
Fixed a couple of allocation issues, corrected an off-by-one
error in environment setup.
|
|
Add local variable cache via get_value and set_value. The local cache
is setup at constructor time (or soon after).
Rewrite the pseudo_setupenv and pseudo_dropenv routines, add a new
pseudo_setupenvp and pseudo_dropenvp as well to handle the execve
cases.
We can now successfully use /usr/bin/env -i env and get pseudo values
back!
|
|
|
|
Add PSEUDO_BINDIR, PSEUDO_LIBDIR, and PSEUDO_LOCALSTATEDIR to allow for more
easy customization of PSEUDO components at run-time. If these are not set
they will be automatically generated based on the existing PSEUDO_PREFIX path.
PSEUDO_BINDIR = PSEUDO_PREFIX /bin
PSEUDO_LIBDIR = PSEUDO_PREFIX /lib
PSEUDO_LOCALSTATEDIR = PSEUDO_PREFIX /var/pseudo
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
|
|
In fakechroot, which pseudo tries to match the functionality of,
the default behavior when creating a symlink with an absolute target
is to prepend the chroot path, so that underlying syscalls will
get the right file.
It is necessary to be able to disable this behavior to create target
filesystems in some cases. To that end, support a new environment
variable, PSEUDO_NOSYMLINKEXP, which disables that behavior.
|
|
You can't use setenv() to modify the environment that will
be passed to a child process through execve()...
Also, fix the setupenv() to use PSEUDO_SUFFIX if defined.
Use execve() to spawn child processes, so we can use setupenv()
and dropenv().
|
|
|
|
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
|
|
* Add lckpwdf/ulckpwdf to guts/README
* Remove arguments from function pointer arguments.
While in theory the compar function pointer has always taken
"const struct dirent **", some systems (many) have declared
it instead as taking "const void *". For now, just omit
the types; a pointer to function taking unknown arguments
is a compatible type, and we never call the functions, we
just pass them to something else.
* Handle readlinkat() on systems without *at functions
* Fix pseudo_etc_file (spotted by "fortify")
When O_CREAT can be a flag, 0600 mode is needed. While we're
at it, remove a bogus dummy open.
* Fix mkdtemp()
Was returning the address of the internal buffer rather than the
user-provided buffer. Also fixed a typo in an error message.
* Don't call fgetgrent_r() with a null FILE *.
* A couple of other typo-type fixes.
|
|
It's not enough to rely on the usual chroot() stuff affecting the
file open, not least because these use the glibc-internal __open
which is not currently intercepted, but also because we want to
use the PSEUDO_PASSWD path when that's set but there's no chroot().
There's some extra magic in pseudo_etc_file to support these
operations, since they can legitimately create a file rather
than opening an existing one.
|
|
Migrate the stable part of the wrapper code (not machine-generated)
out of makewrappers, to make it easier to maintain.
|
|
Spotted some glibc extensions to file modes, altered fopen logic.
Fix handling for the case where the underlying pseudo_pwd_fd or
pseudo_grp_fd are closed.
|
|
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.
|
|
|
|
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.
|
|
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.
|
|
None of them seem to have been genuine problems, but it's prettier now,
and some were questionable.
|
|
Add chroot() and a large number of things needed to make it work.
The list of intercepted calls is large but not exhaustive.
|
|
* 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().
|
|
For reasons not clear to me, early iterations of pseudo_client.c
used errno %d instead of calling strerror(). Since I already
called strerror() elsewhere in the file, calling it a few more
times isn't a problem.
|
|
|
Peter Seebach
seebs
Mark Hatle
Peter Seebach