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From: "Mickaël Salaün" <mic@digikod.net>
To: linux-kernel@vger.kernel.org
Cc: "Mickaël Salaün" <mic@digikod.net>,
	"Al Viro" <viro@zeniv.linux.org.uk>,
	"Andy Lutomirski" <luto@amacapital.net>,
	"Anton Ivanov" <anton.ivanov@cambridgegreys.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Casey Schaufler" <casey@schaufler-ca.com>,
	"James Morris" <jmorris@namei.org>,
	"Jann Horn" <jannh@google.com>, "Jeff Dike" <jdike@addtoit.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Kees Cook" <keescook@chromium.org>,
	"Michael Kerrisk" <mtk.manpages@gmail.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Serge E . Hallyn" <serge@hallyn.com>,
	"Shuah Khan" <shuah@kernel.org>,
	"Vincent Dagonneau" <vincent.dagonneau@ssi.gouv.fr>,
	kernel-hardening@lists.openwall.com, linux-api@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-security-module@vger.kernel.org, x86@kernel.org
Subject: [PATCH v20 09/12] arch: Wire up Landlock syscalls
Date: Sun,  2 Aug 2020 23:59:00 +0200	[thread overview]
Message-ID: <20200802215903.91936-10-mic@digikod.net> (raw)
In-Reply-To: <20200802215903.91936-1-mic@digikod.net>

Wire up the following system calls for all architectures:
* landlock_get_features(2)
* landlock_create_ruleset(2)
* landlock_add_rule(2)
* landlock_enforce_ruleset(2)

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: James Morris <jmorris@namei.org>
Cc: Jann Horn <jannh@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Serge E. Hallyn <serge@hallyn.com>
---

Changes since v19:
* Increase syscall numbers by 4 to leave space for new ones (in
  linux-next): watch_mount(2), watch_sb(2), fsinfo(2) and
  process_madvise(2) (requested by Arnd Bergmann).
* Replace the previous multiplexor landlock(2) with 4 syscalls:
  landlock_get_features(2), landlock_create_ruleset(2),
  landlock_add_rule(2) and landlock_enforce_ruleset(2).

Changes since v18:
* Increase the syscall number because of the new faccessat2(2).

Changes since v14:
* Add all architectures.

Changes since v13:
* New implementation.
---
 arch/alpha/kernel/syscalls/syscall.tbl      |  4 ++++
 arch/arm/tools/syscall.tbl                  |  4 ++++
 arch/arm64/include/asm/unistd.h             |  2 +-
 arch/arm64/include/asm/unistd32.h           |  8 ++++++++
 arch/ia64/kernel/syscalls/syscall.tbl       |  4 ++++
 arch/m68k/kernel/syscalls/syscall.tbl       |  4 ++++
 arch/microblaze/kernel/syscalls/syscall.tbl |  4 ++++
 arch/mips/kernel/syscalls/syscall_n32.tbl   |  4 ++++
 arch/mips/kernel/syscalls/syscall_n64.tbl   |  4 ++++
 arch/mips/kernel/syscalls/syscall_o32.tbl   |  4 ++++
 arch/parisc/kernel/syscalls/syscall.tbl     |  4 ++++
 arch/powerpc/kernel/syscalls/syscall.tbl    |  4 ++++
 arch/s390/kernel/syscalls/syscall.tbl       |  4 ++++
 arch/sh/kernel/syscalls/syscall.tbl         |  4 ++++
 arch/sparc/kernel/syscalls/syscall.tbl      |  4 ++++
 arch/x86/entry/syscalls/syscall_32.tbl      |  4 ++++
 arch/x86/entry/syscalls/syscall_64.tbl      |  4 ++++
 arch/xtensa/kernel/syscalls/syscall.tbl     |  4 ++++
 include/uapi/asm-generic/unistd.h           | 10 +++++++++-
 19 files changed, 82 insertions(+), 2 deletions(-)

diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index 5ddd128d4b7a..d59664094690 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -478,3 +478,7 @@
 547	common	openat2				sys_openat2
 548	common	pidfd_getfd			sys_pidfd_getfd
 549	common	faccessat2			sys_faccessat2
+554	common	landlock_get_features		sys_landlock_get_features
+555	common	landlock_create_ruleset		sys_landlock_create_ruleset
+556	common	landlock_add_rule			sys_landlock_add_rule
+557	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
index d5cae5ffede0..9fe59a61fa75 100644
--- a/arch/arm/tools/syscall.tbl
+++ b/arch/arm/tools/syscall.tbl
@@ -452,3 +452,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index 3b859596840d..fb7a0be2f3d9 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -38,7 +38,7 @@
 #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE + 5)
 #define __ARM_NR_COMPAT_END		(__ARM_NR_COMPAT_BASE + 0x800)
 
-#define __NR_compat_syscalls		440
+#define __NR_compat_syscalls		448
 #endif
 
 #define __ARCH_WANT_SYS_CLONE
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 6d95d0c8bf2f..d150396491e6 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -885,6 +885,14 @@ __SYSCALL(__NR_openat2, sys_openat2)
 __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd)
 #define __NR_faccessat2 439
 __SYSCALL(__NR_faccessat2, sys_faccessat2)
+#define __NR_landlock_get_features 444
+__SYSCALL(__NR_landlock_get_features, sys_landlock_get_features)
+#define __NR_landlock_create_ruleset 445
+__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
+#define __NR_landlock_add_rule 446
+__SYSCALL(__NR_landlock_add_rule, sys_landlock_add_rule)
+#define __NR_landlock_enforce_ruleset 447
+__SYSCALL(__NR_landlock_enforce_ruleset, sys_landloc_enforce_rulesetk)
 
 /*
  * Please add new compat syscalls above this comment and update
diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl
index 49e325b604b3..84872f8daa42 100644
--- a/arch/ia64/kernel/syscalls/syscall.tbl
+++ b/arch/ia64/kernel/syscalls/syscall.tbl
@@ -359,3 +359,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
index f71b1bbcc198..a362b4b16d7b 100644
--- a/arch/m68k/kernel/syscalls/syscall.tbl
+++ b/arch/m68k/kernel/syscalls/syscall.tbl
@@ -438,3 +438,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
index edacc4561f2b..acc931725b43 100644
--- a/arch/microblaze/kernel/syscalls/syscall.tbl
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -444,3 +444,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
index f777141f5256..5e1d5bfced9d 100644
--- a/arch/mips/kernel/syscalls/syscall_n32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n32.tbl
@@ -377,3 +377,7 @@
 437	n32	openat2				sys_openat2
 438	n32	pidfd_getfd			sys_pidfd_getfd
 439	n32	faccessat2			sys_faccessat2
+444	n32	landlock_get_features		sys_landlock_get_features
+445	n32	landlock_create_ruleset		sys_landlock_create_ruleset
+446	n32	landlock_add_rule			sys_landlock_add_rule
+447	n32	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl
index da8c76394e17..8d9b6175f4af 100644
--- a/arch/mips/kernel/syscalls/syscall_n64.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n64.tbl
@@ -353,3 +353,7 @@
 437	n64	openat2				sys_openat2
 438	n64	pidfd_getfd			sys_pidfd_getfd
 439	n64	faccessat2			sys_faccessat2
+444	n64	landlock_get_features		sys_landlock_get_features
+445	n64	landlock_create_ruleset		sys_landlock_create_ruleset
+446	n64	landlock_add_rule			sys_landlock_add_rule
+447	n64	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
index 13280625d312..66e58338772a 100644
--- a/arch/mips/kernel/syscalls/syscall_o32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_o32.tbl
@@ -426,3 +426,7 @@
 437	o32	openat2				sys_openat2
 438	o32	pidfd_getfd			sys_pidfd_getfd
 439	o32	faccessat2			sys_faccessat2
+444	o32	landlock_get_features		sys_landlock_get_features
+445	o32	landlock_create_ruleset		sys_landlock_create_ruleset
+446	o32	landlock_add_rule			sys_landlock_add_rule
+447	o32	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
index 5a758fa6ec52..70bdc7c43464 100644
--- a/arch/parisc/kernel/syscalls/syscall.tbl
+++ b/arch/parisc/kernel/syscalls/syscall.tbl
@@ -436,3 +436,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index f833a3190822..3f1d2c12eb98 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -528,3 +528,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index bfdcb7633957..577d590450e9 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -441,3 +441,7 @@
 437  common	openat2			sys_openat2			sys_openat2
 438  common	pidfd_getfd		sys_pidfd_getfd			sys_pidfd_getfd
 439  common	faccessat2		sys_faccessat2			sys_faccessat2
+444  common	landlock_get_features		sys_landlock_get_features		sys_landlock_get_features
+445  common	landlock_create_ruleset		sys_landlock_create_ruleset		sys_landlock_create_ruleset
+446  common	landlock_add_rule			sys_landlock_add_rule			sys_landlock_add_rule
+447  common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
index acc35daa1b79..9202338a9e70 100644
--- a/arch/sh/kernel/syscalls/syscall.tbl
+++ b/arch/sh/kernel/syscalls/syscall.tbl
@@ -441,3 +441,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
index 8004a276cb74..b4c47eefda57 100644
--- a/arch/sparc/kernel/syscalls/syscall.tbl
+++ b/arch/sparc/kernel/syscalls/syscall.tbl
@@ -484,3 +484,7 @@
 437	common	openat2			sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index d8f8a1a69ed1..26735df8c19e 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -443,3 +443,7 @@
 437	i386	openat2			sys_openat2
 438	i386	pidfd_getfd		sys_pidfd_getfd
 439	i386	faccessat2		sys_faccessat2
+444	i386	landlock_get_features		sys_landlock_get_features
+445	i386	landlock_create_ruleset		sys_landlock_create_ruleset
+446	i386	landlock_add_rule			sys_landlock_add_rule
+447	i386	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 78847b32e137..7e9c927b51fb 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -360,6 +360,10 @@
 437	common	openat2			sys_openat2
 438	common	pidfd_getfd		sys_pidfd_getfd
 439	common	faccessat2		sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
 
 #
 # x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
index 69d0d73876b3..c8b1a6218ee6 100644
--- a/arch/xtensa/kernel/syscalls/syscall.tbl
+++ b/arch/xtensa/kernel/syscalls/syscall.tbl
@@ -409,3 +409,7 @@
 437	common	openat2				sys_openat2
 438	common	pidfd_getfd			sys_pidfd_getfd
 439	common	faccessat2			sys_faccessat2
+444	common	landlock_get_features		sys_landlock_get_features
+445	common	landlock_create_ruleset		sys_landlock_create_ruleset
+446	common	landlock_add_rule			sys_landlock_add_rule
+447	common	landlock_enforce_ruleset	sys_landlock_enforce_ruleset
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index f4a01305d9a6..ff3afbf02b51 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -857,9 +857,17 @@ __SYSCALL(__NR_openat2, sys_openat2)
 __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd)
 #define __NR_faccessat2 439
 __SYSCALL(__NR_faccessat2, sys_faccessat2)
+#define __NR_landlock_get_features 444
+__SYSCALL(__NR_landlock_get_features, sys_landlock_get_features)
+#define __NR_landlock_create_ruleset 445
+__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
+#define __NR_landlock_add_rule 446
+__SYSCALL(__NR_landlock_add_rule, sys_landlock_add_rule)
+#define __NR_landlock_enforce_ruleset 447
+__SYSCALL(__NR_landlock_enforce_ruleset, sys_landloc_enforce_rulesetk)
 
 #undef __NR_syscalls
-#define __NR_syscalls 440
+#define __NR_syscalls 448
 
 /*
  * 32 bit systems traditionally used different
-- 
2.28.0.rc2


  parent reply	other threads:[~2020-08-02 22:00 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-02 21:58 [PATCH v20 00/12] Landlock LSM Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 01/12] landlock: Add object management Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 02/12] landlock: Add ruleset and domain management Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 03/12] landlock: Set up the security framework and manage credentials Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 04/12] landlock: Add ptrace restrictions Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 05/12] LSM: Infrastructure management of the superblock Mickaël Salaün
2020-08-12 19:16   ` Stephen Smalley
2020-08-13 14:15     ` Mickaël Salaün
2020-08-13 18:39       ` Stephen Smalley
2020-09-04 14:06         ` Stephen Smalley
2020-09-16 13:42           ` Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 06/12] fs,security: Add sb_delete hook Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 07/12] landlock: Support filesystem access-control Mickaël Salaün
2020-08-02 21:58 ` [PATCH v20 08/12] landlock: Add syscall implementations Mickaël Salaün
2020-08-13 20:29   ` Mickaël Salaün
2020-08-02 21:59 ` Mickaël Salaün [this message]
2020-08-02 21:59 ` [PATCH v20 10/12] selftests/landlock: Add initial tests Mickaël Salaün
2020-08-02 21:59 ` [PATCH v20 11/12] samples/landlock: Add a sandbox manager example Mickaël Salaün
2020-08-02 21:59 ` [PATCH v20 12/12] landlock: Add user and kernel documentation Mickaël Salaün

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