Lucas De Marchi [Thu, 26 Jan 2012 14:18:23 +0000 (12:18 -0200)]
build-sys: autotoolify build of check libraries
Many thanks to Iván Briano (sachieru@gmail.com) for pointing out this
thread in libtool mailing list:
http://www.mail-archive.com/libtool@gnu.org/msg09627.html
Passing '-rpath /nowhere' in LDFLAGS we are able to create shared libs
that are not installed.
Lucas De Marchi [Wed, 25 Jan 2012 19:46:52 +0000 (17:46 -0200)]
testsuite: match outputs of test with a known correct one
Tests may put the correct output in a file and tell testsuite to check
if it matches the output from the test running.
Testsuite compares the outputs while running the test: it creates a pipe
between parent and child; parent reads both stdout and stderr from child
and compares with the correct output.
Lucas De Marchi [Wed, 25 Jan 2012 17:13:45 +0000 (15:13 -0200)]
testsuite: allow to run tests outside of top_buildir
In order to locate where the shared libs to be preloaded are we need to
reference them using abs_top_buildir. Otherwise we are limited to
running tests from there.
Lucas De Marchi [Wed, 25 Jan 2012 14:22:50 +0000 (12:22 -0200)]
testsuite: add trap to stat() and friends including tests
Add trap to stat(): we need to trap other functions too, depending on
stat.h, the function from glibc that is actually called may be stat64 or
__xstat() too.
Lucas De Marchi [Wed, 25 Jan 2012 01:31:46 +0000 (23:31 -0200)]
testsuite: export environment with flags and LD_PRELOAD
A certain config can add flags and each flag may be associated with a
lib to LD_PRELOAD. It's now done for uname(2), which requires uname.so
in order to trap the calls.
Lucas De Marchi [Sat, 21 Jan 2012 17:38:25 +0000 (15:38 -0200)]
build-sys: do not create symlinks by default
Distro packagers should create them instead. It's too much trouble to
create them in the build system and every distro wants a different path
for them.
Lucas De Marchi [Sat, 21 Jan 2012 04:45:06 +0000 (02:45 -0200)]
modprobe: kill operations depending on path
It was not on module-init-tools and it doesn't make much sense. It will
deal with dependencies, but looking at modules in the index. This might
not be the module we want if we are loading another from outside of the
tree.
Dealing with paths causes this bug (supposing there's a module names
squashfs):
# cd /
# touch squashfs
# modprobe squashfs
That is because it detects that squashfs exists as a file and it will
try to load it instead of the alias "squashfs".
If you need to load a module from a path, use insmod.
Thanks to Silvan Calarco <silvan.calarco@mambasoft.it> who reported the
bug and helped debugging it.
Lucas De Marchi [Tue, 17 Jan 2012 14:10:42 +0000 (12:10 -0200)]
Check if struct stat has mtim member
Not all libc's have a mtim member in struct stat (dietlibc doesn't).
Change ts_usec() to receive a struct stat as parameter and implement it
accordingly for both cases.
Lucas De Marchi [Tue, 17 Jan 2012 12:05:02 +0000 (10:05 -0200)]
modprobe: flush stdout before dumping indexes
Index dump doesn't use stdio.h function and instead call write()
directly on STDOUT_FILENO file descriptor. Therefore we need to flush
stdio buffers before calling it, to be sure the configuration dump will
appear before index's.
Lucas De Marchi [Mon, 16 Jan 2012 17:56:17 +0000 (15:56 -0200)]
libkmod: dump index files
Provide a function to dump the index files to a certain fd. It could be
more optimized (particularly the functions to dump the index that were
copied and pasted from m-i-t), but it seems like the only user of it is
'modprobe -c', used for debugging purposes. So, keep it as is.
Lucas De Marchi [Thu, 12 Jan 2012 17:23:51 +0000 (15:23 -0200)]
modprobe: rework module removal without tree traversing
Just like the module insertion, module removal is remade.
The dependencies line that comes from modules.dep already contains all
the dependencies necessary to remove that module. Therefore modprobe
doesn't have to do the recursion between the modules in order to remove
it. All we have to do is to remove in order:
For the module being removed:
----------------------------
1. softdeps (in reverse order)
2. deps (in reverse order)
3. module
4. postdeps (in reverse order)
For any of the dependencies:
----------------------------
1. softdeps (in reverse order)
2. module
3. softdeps (in reverse order)
Lucas De Marchi [Thu, 12 Jan 2012 04:21:26 +0000 (02:21 -0200)]
modprobe: rework module insertion without tree traversing
The dependencies line that comes from modules.dep already contains all
the dependencies necessary to insert that module. Therefore modprobe
doesn't have to do the recursion between the modules in order to load a
module. All we have to do is to load in order:
For the module being loaded:
----------------------------
1. softdeps
2. deps
3. module
4. postdeps
For any of the dependencies:
----------------------------
Lucas De Marchi [Wed, 11 Jan 2012 20:29:55 +0000 (18:29 -0200)]
modprobe: break dependency loop by checking if module is loaded
modprobe doesn't have support for handling dependency loop. That happens
with poorly written softdeps that can introduce a loop. We must deal
with them like it's being done in libkmod.
However, we can break a dependency loop when the dependency was already
inserted. This commit fixes this issue, that happens in the following
scenario:
dependencies:
-------------
modA:
modB: modA
modC: modA
config:
softdep modA post: modB modC
This creates the following loop:
modA
inserted ok
handle post-soft-deps of modA -> modB modC
modB
handle dependencies of modB -> modA
modA is already inserted
handle post-soft-deps of modA -> modB modC
And so on and so forth.
Now we break the loop by checking if module is already inserted, before
handling it. Thus this gives us:
modA
inserted ok
handle post-soft-deps of modA -> modB modC
modB
handle dependencies of modB -> modA
modA is already inserted
inserted ok
modC
handle dependencies of modC -> modA
modA is already inserted
inserted ok
Lucas De Marchi [Tue, 10 Jan 2012 16:06:24 +0000 (14:06 -0200)]
build-sys: workaround libtool issue with argv[0]
Symlinking tools to kmod doesn't work because argv[0] is not the name of
the symlink, but rather 'kmod' (since libtool's wrapper script calls the
tools/.libs/kmod directly)
Now we create another binary kmod-nolib that is statically linked to
libkmod so we can call the binary directly and do not worry about
LD_LIBRARY_PATH.