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feat(driver): Add RISC-V kernel module support #1181

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merged 3 commits into from
Oct 13, 2023
Merged

feat(driver): Add RISC-V kernel module support #1181

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1a7e842
feat(driver-kmod): Add RISC-V kernel module support
Xeonacid Jun 28, 2023
7f02c30
fix(test): fixed execveat new test.
FedeDP Oct 13, 2023
deeff45
fix(test/drivers): ensure that `buf` is not paged out by the kernel w…
FedeDP Oct 13, 2023
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3 changes: 2 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
[![Falco Core Repository](https://github.com/falcosecurity/evolution/blob/main/repos/badges/falco-core-blue.svg)](https://github.com/falcosecurity/evolution/blob/main/REPOSITORIES.md#core-scope) [![Stable](https://img.shields.io/badge/status-stable-brightgreen?style=for-the-badge)](https://github.com/falcosecurity/evolution/blob/main/REPOSITORIES.md#stable) [![License](https://img.shields.io/github/license/falcosecurity/libs?style=for-the-badge)](./COPYING)

[![CI Build](https://github.com/falcosecurity/libs/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/falcosecurity/libs/actions/workflows/ci.yml)
[![Architectures](https://img.shields.io/badge/ARCHS-x86__64%7Caarch64%7Cs390x-blueviolet)](#drivers-officially-supported-architectures)
[![Architectures](https://img.shields.io/badge/ARCHS-x86__64%7Caarch64%7Cs390x%7Criscv64-blueviolet)](#drivers-officially-supported-architectures)
[![Drivers](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/FedeDP/1cbc5d42edf8e3a02fb75e76625f1072/raw/kernel.json)](https://github.com/falcosecurity/libs/actions/workflows/latest-kernel.yml)
[![Github Pages](https://github.com/falcosecurity/libs/actions/workflows/pages.yml/badge.svg)](https://falcosecurity.github.io/libs/)

Expand Down Expand Up @@ -50,6 +50,7 @@ Our drivers officially support the following architectures:
| **x86_64** | >= 2.6 | >= 4.14 | >= 5.8 | _STABLE_ |
| **aarch64** | >= [3.16](https://github.com/torvalds/linux/commit/055b1212d141f1f398fca548f8147787c0b6253f) | >= 4.17 | >= 5.8 | _STABLE_ |
| **s390x** | >= 2.6 | >= [5.5](https://github.com/torvalds/linux/commit/6ae08ae3dea) | >= 5.8 | _EXPERIMENTAL_ |
| **riscv64** | >= [5.0](https://github.com/torvalds/linux/commit/5aeb1b36cedd3a1dfdbfe368629fed52dee34103) | N/A | N/A | _EXPERIMENTAL_ |


To access up-to-date status reports on Falco drivers kernel testing, please visit this [page](https://falcosecurity.github.io/libs/). It provides a list of supported syscalls as well as the [report](https://falcosecurity.github.io/libs/report/).
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4 changes: 3 additions & 1 deletion driver/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,8 @@ project(driver)
set(TARGET_ARCH ${CMAKE_HOST_SYSTEM_PROCESSOR})
if((NOT TARGET_ARCH STREQUAL "x86_64") AND
(NOT TARGET_ARCH STREQUAL "aarch64") AND
(NOT TARGET_ARCH STREQUAL "s390x"))
(NOT TARGET_ARCH STREQUAL "s390x") AND
(NOT TARGET_ARCH STREQUAL "riscv64"))
message(WARNING "Target architecture not officially supported by our drivers!")
else()
# Load current kernel version
Expand All @@ -24,6 +25,7 @@ else()
set(kmod_min_kver_map_x86_64 2.6)
set(kmod_min_kver_map_aarch64 3.16)
set(kmod_min_kver_map_s390x 2.6)
set(kmod_min_kver_map_riscv64 5.0)
if (LINUX_KERNEL_VERSION VERSION_LESS ${kmod_min_kver_map_${TARGET_ARCH}})
message(WARNING "[KMOD] To run this driver you need a Linux kernel version >= ${kmod_min_kver_map_${TARGET_ARCH}} but actual kernel version is: ${UNAME_RESULT}")
endif()
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6 changes: 3 additions & 3 deletions driver/feature_gates.h
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,7 @@ or GPL2.txt for full copies of the license.
* been introduced in the following kernel release:
* https://github.com/torvalds/linux/commit/0a16b6075843325dc402edf80c1662838b929aff
*/
#if defined(CONFIG_ARM64) || defined(CONFIG_S390)
#if defined(CONFIG_ARM64) || defined(CONFIG_S390) || defined(CONFIG_RISCV)
#define CAPTURE_SCHED_PROC_FORK
#endif

Expand Down Expand Up @@ -156,7 +156,7 @@ or GPL2.txt for full copies of the license.
// CAPTURE_SCHED_PROC_FORK
///////////////////////////////

#if defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_s390)
#if defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_s390) || defined(__TARGET_ARCH_riscv)
#define CAPTURE_SCHED_PROC_FORK
#endif

Expand Down Expand Up @@ -207,7 +207,7 @@ or GPL2.txt for full copies of the license.
// CAPTURE_SCHED_PROC_FORK
///////////////////////////////

#if defined(__aarch64__) || defined(__s390x__)
#if defined(__aarch64__) || defined(__s390x__) || defined(__riscv)
#define CAPTURE_SCHED_PROC_FORK
#endif

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2 changes: 2 additions & 0 deletions driver/ppm.h
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Expand Up @@ -89,6 +89,8 @@ long ppm_strncpy_from_user(char *to, const char __user *from, unsigned long n);
#define SYSCALL_TABLE_ID0 0
#elif defined CONFIG_ARM64
#define SYSCALL_TABLE_ID0 0
#elif defined CONFIG_RISCV
#define SYSCALL_TABLE_ID0 0
#endif

extern const struct syscall_evt_pair g_syscall_table[];
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