Compilation error

[thed00de]

After calling make I get the following, any help appreciated, thanks.

$ make
[ 0%] Built target check_whitespace
[ 2%] Built target cpp_test
[ 2%] Built target cstyle
[ 8%] Built target syscall_intercept_base_c
[ 8%] Built target syscall_intercept_base_clf
[ 9%] Built target syscall_intercept_base_asm
[ 10%] Built target syscall_intercept_unscoped
[ 12%] Built target generate_syscall_intercept_scoped
[ 14%] Built target syscall_intercept_shared
[ 16%] Built target syscall_intercept_static
[ 17%] Built target check_license_executable
[ 19%] Built target syscall_logger
[ 20%] Built target fork_ban
[ 21%] Built target icap
[ 23%] Built target vfork_logging
[ 25%] Built target intercept_sys_write
[ 26%] Built target test_clone_thread_preload
[ 27%] Built target test_clone_thread
[ 28%] Built target filter_test
[ 29%] Built target hook_test_preload_o
[ 29%] Built target hook_test_preload_with_static
[ 30%] Built target hook_test_preload_with_shared
[ 31%] Building ASM object test/CMakeFiles/pattern_jmps.in.dir/pattern_jmps.in.S.o
/home/ivanc/dev/syscall_intercept/test/pattern_jmps.in.S:51:9: error: unknown token in expression
jmp 0f
^
/home/ivanc/dev/syscall_intercept/test/pattern_jmps.in.S:54:9: error: unknown token in expression
jmp 0f
^
make[2]: *** [test/CMakeFiles/pattern_jmps.in.dir/pattern_jmps.in.S.o] Error 1
make[1]: *** [test/CMakeFiles/pattern_jmps.in.dir/all] Error 2
make: *** [all] Error 2

[thed00de]

I have it working with some modifications to these offending ASM instructions i.e. I changed the numeric labels to symbolic labels.

One thing I was hoping it would do is patch the main executable itself e.g. 'ls' in your example.
In that case then working on statically linked binaries.
Is this possible to do?

[GBuella]

Hi @thed00de ,

What assembler is that -- can I reproduce this error?

you can use the environment variable INTERCEPT_ALL_OBJS for this -- it is not tested a lot, but should work most of the time, i.e.:

LD_PRELOAD=/path/to/syscall_intercept.so INTERCEPT_ALL_OBJS=1 ./application

Let me know how that works out for you!