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This consists of several changes at once:
- purged unneccessary variables;
- fixed variable and function types;
- more readable return values;
- improved error logging;
- optimized hash printout just in case.
The original version of this patch fixed an off-by-one
issue too (it's been committed separately now).
This is a patch by Maxim Suhanov <suhanov/group-ib.ru>
aiming to provide integrity and authenticity check for
stage2 rootfs image when required:
- media bootloader passes sha256 hash of stage2 image;
- stage1 early userspace code (that is, propagator)
checks the candidate files against that during search;
- existing file with different checksum results in a warning
with a dialog to just say NO, continue searching for the
proper squashfs image and have a look at that weird one;
- existing file with correct checksum results in booting
as usual.
The check is triggered by "hash=..." kernel boot parameter.
See also http://www.forensicswiki.org/wiki/Forensic_Live_CD_issues
tools.c: In function 'splash_verbose':
tools.c:309:2: warning: implicit declaration of function 'spawn' [-Wimplicit-function-declaration]
stage1.c: In function 'spawn_splash':
stage1.c:165:2: warning: implicit declaration of function 'spawn' [-Wimplicit-function-declaration]
mkdir_dev() use for create subdir with mode 0755 in /dev directory
and return success if subdir already exist.
mkdirs_dev() used mkdir_dev() for create multiple subdirs.
The misoptimization of the final commit version resulted
in strlen operating on a 5 char too short string thus
delivering "device names" like "/de" and "/de1".
Thanks yet another late colleague :)
Essentially finished what gfd2a83d started; this is to avoid
"/bin/plymouth: No such file or directory" spam all over the place
when "splash" boot parameter is present but plymouth itself is absent.
Here's the culprit:
open("/lib/modules/3.4.7-std-def-alt1/modules.dep.bin", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/modules/3.4.7-std-def-alt1/modules.dep.bin", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/modules/3.4.7-std-def-alt1/modules.alias.bin", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
exit_group(1) = ?
+++ exited with 1 +++
[root@builder .in]# ls -l /lib/modules/3.4.7-std-def-alt1/modules.dep*
-rw-r--r-- 1 root root 370664 Jul 29 18:20 /lib/modules/3.4.7-std-def-alt1/modules.dep
Here's the typical result for mkimage:
ERROR: could not open directory /tmp/mkmodpack.sWzMWshm9Z/lib/modules/3.4.7-std-def-alt1: No such file or directory
FATAL: could not search modules: No such file or directory
mkmodpack: Failed to create modules dependencies.
The initial intention was that at least one second
should pass before retesting for the insmod result
*but* that appears to be both unneeded and boring;
let's skip even an extra second if there's no need.
