We do not need two debug.h files.
Take Fujitsu's STATIC_ASSERT over BUILD_BUG_ON because it is more used
Change-Id: If04c17fbb7406ab15fe86267fed8d6da460cec62
Fujitsu: POSTK_DEBUG_ARCH_DEP_9
A signed integer cannot be shifted in a way that will flip the
sign bit; make such arguments unsigned to be safe
Change-Id: Iafc060f98f899ae3ffb876ba22fdd6183fbb6e57
The original fujitsu code added a whole new ihk_mc_perfctr_stop_first
function, duplicating a lot of code - add a flag to existing function
instead.
Change-Id: Ic9ce0236d68f967ff72cf88e5d9f1bda5c98aa1b
Fujitsu: POSTK_DEBUG_ARCH_DEP_107
We need to separate the two because the heap of a PIE is created in
the area to which it is mapped.
Related commits:
b1309a5d: PIE is mapped at map_end instead of at
user_start
c4219655: Interpreter is mapped to map_start to make a
system call that dereferences a NULL pointer fail
[dominique.martinet@cea.fr: Also add ULONG_MAX and friend macroes,
used for data_min]
[ken.sato.ty@hitachi-solutions.com: fix execve]
Change-Id: I8ecaf22b7965090ab67bebece57c68283ba23664
mcoverlayfs has a high maintenance burden and does not work on rhel8's 4.18
kernel (while it works on vanilla 4.18...); instead of debugging this further
time is better spent making it independent from overlayfs.
Change-Id: I7454ae95b0fbb3373c256aa2fd83cdfec466c009
Separate copyright bumps in a different commit.
A lot of files only had the copyright change at this point; these
were probably changes I added separatly in other patches but just
split these in a different commit instead to simplify git stats
Change-Id: I93cf3fc1c0fa04ee743a79c3fe9768933e6bd0d2
A later version would probably want to check some mask for arm64...
Change-Id: I67e13a852c3ed406fbf8ae1688539b9e069c0e81
Fujitsu: POSTK_DEBUG_ARCH_DEP_87
These macros are needed to make sure the compiler does not optimize away
atomic constructs such as "while (!READ_ONCE(foo))" loops that do not
modify foo within the loop
Also move the barrier() define where it belongs while we are here, it is
needed for READ_ONCE/WRITE_ONCE and including ihk/cpu.h here causes
include loops
Change-Id: Ia533a849ed674719ccbc0495be47d22a3c47b8f8
There were mainly two problems with shebangs:
- Suffix arguments handling e.g. '#!/bin/sh -x'
- Recursive handling e.g. script1 fetchs '#!/path/to/script2'
and script2 itself has a shebang
- (did I say two?) running shebang would replace argv[optind] instead
of appending e.g. script with '#!/bin/sh' and running './script -c'
would run '/bin/sh -c' instead of '/bin/sh ./script -c'
There also are two places where this needs parsing:
- starting a fresh program from mcexec
- starting a new program from execve in mcexec
The first was easy to fix as we already had argv around, but the later
required a new way to transfer the 'new argv elements from the script'
to mckernel to append before its argv -- it used to be 'desc->shell_path'
but that was no longer used at some point and just one keyword is not
enough to handle this properly.
This commit does:
- Refactors the lookup_path + load_elf_desc that was only done at most
twice in its own function that loops indefinitely and use that in both
situations described above
- Transmits the argv addition in the transfer to mckernel after the
desc; mckernel allocates 4 pages (hardcoded) for the descs and we will
hopefully have room for the script arguments on top of that... (there is
no guard!!!)
- Change flatten_strings to allow prepending a flattened string instead
of a single string.
Note that the flatten_string change also brought in a difference in the
format, to have the full length embedded within the string, the latest
slot that used to be zeroes now contains the position of the end of the
buffer (where the last+1 string would be if there had been one)
This required a trivial change in mckernel prepare args function that
used this property for no real reason.
Hopefully things work™, this probably warrants adding a couple of new
ostests...
- create a couple of scripts with recursive invocation/arguments and
check their own argv.
- execute "mcexec script args" and "mcexec sh -c 'script args'"
Change-Id: I2cf9cde5c07c9293f730de89c9731bd93dbfa789
Refs: #1115
(1) Masquerade clv
(2) Fix timeout
(3) Let mcexec thread with the same tid as McKernel thread migrating
to Linux handles the migration request
(4) Call create_tracer() before creating proxy related objects
Change-Id: I6b2689b70db49827f10aa7d5a4c581aa81319b55
