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2010-04-26Miscellaneous fixes:Peter Seebach
* 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.
2010-04-26Add lckpwdf()/ulckpwdf().Peter Seebach
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.
2010-03-29Add password/group call emulation.Peter Seebach
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.
2010-03-26Add support for intercepting execve()Peter Seebach
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.
2010-03-25initial chroot() supportPeter Seebach
Add chroot() and a large number of things needed to make it work. The list of intercepted calls is large but not exhaustive.
2010-03-24Prep for chroot handling:Peter Seebach
* 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().
2010-03-16initial public releasePeter Seebach