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67678189e4
This patch adds a new ipe_bprm_creds_for_exec() hook that integrates with the AT_EXECVE_CHECK mechanism. To enable script enforcement, interpreters need to incorporate the AT_EXECVE_CHECK flag when calling execveat() on script files before execution. When a userspace interpreter calls execveat() with the AT_EXECVE_CHECK flag, this hook triggers IPE policy evaluation on the script file. The hook only triggers IPE when bprm->is_check is true, ensuring it's being called from an AT_EXECVE_CHECK context. It then builds an evaluation context for an IPE_OP_EXEC operation and invokes IPE policy. The kernel returns the policy decision to the interpreter, which can then decide whether to proceed with script execution. This extends IPE enforcement to indirectly executed scripts, permitting trusted scripts to execute while denying untrusted ones. Signed-off-by: Yanzhu Huang <yanzhuhuang@linux.microsoft.com> Signed-off-by: Fan Wu <wufan@kernel.org> |
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| .. | ||
| .gitignore | ||
| audit.c | ||
| audit.h | ||
| digest.c | ||
| digest.h | ||
| eval.c | ||
| eval.h | ||
| fs.c | ||
| fs.h | ||
| hooks.c | ||
| hooks.h | ||
| ipe.c | ||
| ipe.h | ||
| Kconfig | ||
| Makefile | ||
| policy.c | ||
| policy.h | ||
| policy_fs.c | ||
| policy_parser.c | ||
| policy_parser.h | ||
| policy_tests.c | ||