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mirror of https://git.code.sf.net/p/linux-ima/ima-evm-utils synced 2025-06-30 21:02:33 +02:00

ima-evm-utils: Extract digest algorithms from hash_info.h

If configured with "--with-kernel-headers=PATH" try to extract hash
algorithms from "hash_info.h" from the kernel source tree or
kernel-headers package located in the specified path. (Otherwise, it
will be tried to get from the installed kernel.)

This also introduces two algorithm lists, one is built-in and another is
from the kernel source. (They should never contain conflicting algorithm
IDs by their append-only nature.) If the digest is not found in the
built-in list it will be searched in the list from kernel's
"hash_info.h".

This patch will allow evmctl to be just recompiled to work with digest
algorithms introduced in the newer kernels.

Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Vitaly Chikunov
2019-03-23 04:41:51 +03:00
committed by Mimi Zohar
parent 07d799cb6c
commit b628d8bfdb
4 changed files with 83 additions and 1 deletions

View File

@ -27,12 +27,18 @@ AC_HEADER_STDC
PKG_CHECK_MODULES(OPENSSL, [ openssl >= 0.9.8 ])
AC_SUBST(OPENSSL_CFLAGS)
AC_SUBST(OPENSSL_LIBS)
AC_SUBST(KERNEL_HEADERS)
AC_CHECK_HEADER(unistd.h)
AC_CHECK_HEADERS(openssl/conf.h)
AC_CHECK_HEADERS(sys/xattr.h, , [AC_MSG_ERROR([sys/xattr.h header not found. You need the c-library development package.])])
AC_CHECK_HEADERS(keyutils.h, , [AC_MSG_ERROR([keyutils.h header not found. You need the libkeyutils development package.])])
AC_ARG_WITH(kernel_headers, [AS_HELP_STRING([--with-kernel-headers=PATH],
[specifies the Linux kernel-headers package location or kernel root directory you want to use])],
[KERNEL_HEADERS="$withval"],
[KERNEL_HEADERS=/lib/modules/$(uname -r)/source])
#debug support - yes for a while
PKG_ARG_ENABLE(debug, "yes", DEBUG, [Enable Debug support])
if test $pkg_cv_enable_debug = yes; then