From: "Mickaël Salaün" <mic@digikod.net>
To: James Morris <jmorris@namei.org>, Jann Horn <jannh@google.com>,
"Serge E . Hallyn" <serge@hallyn.com>
Cc: "Mickaël Salaün" <mic@digikod.net>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Andy Lutomirski" <luto@amacapital.net>,
"Anton Ivanov" <anton.ivanov@cambridgegreys.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Casey Schaufler" <casey@schaufler-ca.com>,
"David Howells" <dhowells@redhat.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>,
"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-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org,
linux-security-module@vger.kernel.org, x86@kernel.org,
"Mickaël Salaün" <mic@linux.microsoft.com>
Subject: [PATCH v32 09/12] arch: Wire up Landlock syscalls
Date: Thu, 1 Apr 2021 22:52:05 +0200 [thread overview]
Message-ID: <20210401205208.2756565-10-mic@digikod.net> (raw)
In-Reply-To: <20210401205208.2756565-1-mic@digikod.net>
From: Mickaël Salaün <mic@linux.microsoft.com>
Wire up the following system calls for all architectures:
* landlock_create_ruleset(2)
* landlock_add_rule(2)
* landlock_restrict_self(2)
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>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Link: https://lore.kernel.org/r/20210401205208.2756565-10-mic@digikod.net
---
Changes since v30:
* Increase syscall numbers to leave space for quotactl_path(2):
synchronize with Landlock syscalls in -next.
Changes since v29:
* Rebase on v5.12-rc3 and fix trivial conflict with mount_setattr(2).
* Synchronize syscall numbers with -next, which are the same as for
v5.12-rc3.
Changes since v27:
* Rename landlock_enforce_ruleset_self(2) to landlock_restrict_self(2).
* Cosmetic fix: align TBL enries.
Changes since v26:
* Rename landlock_enforce_ruleset_current(2) to
landlock_enforce_ruleset_self(2).
Changes since v25:
* Rebase and leave space for the new epoll_pwait2(2) and memfd_secret(2)
from -next.
Changes since v21:
* Rebase and leave space for watch_mount(2) from -next.
Changes since v20:
* Remove landlock_get_features(2).
* Decrease syscall numbers to stick to process_madvise(2) in -next.
* Rename landlock_enforce_ruleset(2) to
landlock_enforce_ruleset_current(2).
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 | 3 +++
arch/arm/tools/syscall.tbl | 3 +++
arch/arm64/include/asm/unistd.h | 2 +-
arch/arm64/include/asm/unistd32.h | 6 ++++++
arch/ia64/kernel/syscalls/syscall.tbl | 3 +++
arch/m68k/kernel/syscalls/syscall.tbl | 3 +++
arch/microblaze/kernel/syscalls/syscall.tbl | 3 +++
arch/mips/kernel/syscalls/syscall_n32.tbl | 3 +++
arch/mips/kernel/syscalls/syscall_n64.tbl | 3 +++
arch/mips/kernel/syscalls/syscall_o32.tbl | 3 +++
arch/parisc/kernel/syscalls/syscall.tbl | 3 +++
arch/powerpc/kernel/syscalls/syscall.tbl | 3 +++
arch/s390/kernel/syscalls/syscall.tbl | 3 +++
arch/sh/kernel/syscalls/syscall.tbl | 3 +++
arch/sparc/kernel/syscalls/syscall.tbl | 3 +++
arch/x86/entry/syscalls/syscall_32.tbl | 3 +++
arch/x86/entry/syscalls/syscall_64.tbl | 3 +++
arch/xtensa/kernel/syscalls/syscall.tbl | 3 +++
include/uapi/asm-generic/unistd.h | 8 +++++++-
19 files changed, 62 insertions(+), 2 deletions(-)
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index 02f0244e005c..4240f21b10b3 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -482,3 +482,6 @@
550 common process_madvise sys_process_madvise
551 common epoll_pwait2 sys_epoll_pwait2
552 common mount_setattr sys_mount_setattr
+554 common landlock_create_ruleset sys_landlock_create_ruleset
+555 common landlock_add_rule sys_landlock_add_rule
+556 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
index dcc1191291a2..161423a5d773 100644
--- a/arch/arm/tools/syscall.tbl
+++ b/arch/arm/tools/syscall.tbl
@@ -456,3 +456,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index 949788f5ba40..727bfc3be99b 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 443
+#define __NR_compat_syscalls 447
#endif
#define __ARCH_WANT_SYS_CLONE
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 3d874f624056..fdfe06bae3fc 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -893,6 +893,12 @@ __SYSCALL(__NR_process_madvise, sys_process_madvise)
__SYSCALL(__NR_epoll_pwait2, compat_sys_epoll_pwait2)
#define __NR_mount_setattr 442
__SYSCALL(__NR_mount_setattr, sys_mount_setattr)
+#define __NR_landlock_create_ruleset 444
+__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
+#define __NR_landlock_add_rule 445
+__SYSCALL(__NR_landlock_add_rule, sys_landlock_add_rule)
+#define __NR_landlock_restrict_self 446
+__SYSCALL(__NR_landlock_restrict_self, sys_landlock_restrict_self)
/*
* 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 d89231166e19..48dbbc95a01f 100644
--- a/arch/ia64/kernel/syscalls/syscall.tbl
+++ b/arch/ia64/kernel/syscalls/syscall.tbl
@@ -363,3 +363,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
index 72bde6707dd3..595108bbbe42 100644
--- a/arch/m68k/kernel/syscalls/syscall.tbl
+++ b/arch/m68k/kernel/syscalls/syscall.tbl
@@ -442,3 +442,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
index d603a5ec9338..db23d65871f9 100644
--- a/arch/microblaze/kernel/syscalls/syscall.tbl
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -448,3 +448,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
index 8fd8c1790941..5028839225fa 100644
--- a/arch/mips/kernel/syscalls/syscall_n32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n32.tbl
@@ -381,3 +381,6 @@
440 n32 process_madvise sys_process_madvise
441 n32 epoll_pwait2 compat_sys_epoll_pwait2
442 n32 mount_setattr sys_mount_setattr
+444 n32 landlock_create_ruleset sys_landlock_create_ruleset
+445 n32 landlock_add_rule sys_landlock_add_rule
+446 n32 landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl
index 169f21438065..ec9c68b75e23 100644
--- a/arch/mips/kernel/syscalls/syscall_n64.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n64.tbl
@@ -357,3 +357,6 @@
440 n64 process_madvise sys_process_madvise
441 n64 epoll_pwait2 sys_epoll_pwait2
442 n64 mount_setattr sys_mount_setattr
+444 n64 landlock_create_ruleset sys_landlock_create_ruleset
+445 n64 landlock_add_rule sys_landlock_add_rule
+446 n64 landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
index 090d29ca80ff..24afd33e3e49 100644
--- a/arch/mips/kernel/syscalls/syscall_o32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_o32.tbl
@@ -430,3 +430,6 @@
440 o32 process_madvise sys_process_madvise
441 o32 epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 o32 mount_setattr sys_mount_setattr
+444 o32 landlock_create_ruleset sys_landlock_create_ruleset
+445 o32 landlock_add_rule sys_landlock_add_rule
+446 o32 landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
index 271a92519683..8ddd0b82d767 100644
--- a/arch/parisc/kernel/syscalls/syscall.tbl
+++ b/arch/parisc/kernel/syscalls/syscall.tbl
@@ -440,3 +440,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index 0b2480cf3e47..02150894b1cf 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -522,3 +522,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 3abef2144dac..331663efd3e7 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -445,3 +445,6 @@
440 common process_madvise sys_process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
index d08eebad6b7f..6ada711f4b72 100644
--- a/arch/sh/kernel/syscalls/syscall.tbl
+++ b/arch/sh/kernel/syscalls/syscall.tbl
@@ -445,3 +445,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
index 84403a99039c..1dbe3239a638 100644
--- a/arch/sparc/kernel/syscalls/syscall.tbl
+++ b/arch/sparc/kernel/syscalls/syscall.tbl
@@ -488,3 +488,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index a1c9f496fca6..782c310de1da 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -447,3 +447,6 @@
440 i386 process_madvise sys_process_madvise
441 i386 epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 i386 mount_setattr sys_mount_setattr
+444 i386 landlock_create_ruleset sys_landlock_create_ruleset
+445 i386 landlock_add_rule sys_landlock_add_rule
+446 i386 landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 7bf01cbe582f..8604ee4bfff9 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -364,6 +364,9 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
#
# Due to a historical design error, certain syscalls are numbered differently
diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
index 365a9b849224..2fad056a32e8 100644
--- a/arch/xtensa/kernel/syscalls/syscall.tbl
+++ b/arch/xtensa/kernel/syscalls/syscall.tbl
@@ -413,3 +413,6 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
+444 common landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index ce58cff99b66..300608b05226 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -863,9 +863,15 @@ __SYSCALL(__NR_process_madvise, sys_process_madvise)
__SC_COMP(__NR_epoll_pwait2, sys_epoll_pwait2, compat_sys_epoll_pwait2)
#define __NR_mount_setattr 442
__SYSCALL(__NR_mount_setattr, sys_mount_setattr)
+#define __NR_landlock_create_ruleset 444
+__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
+#define __NR_landlock_add_rule 445
+__SYSCALL(__NR_landlock_add_rule, sys_landlock_add_rule)
+#define __NR_landlock_restrict_self 446
+__SYSCALL(__NR_landlock_restrict_self, sys_landlock_restrict_self)
#undef __NR_syscalls
-#define __NR_syscalls 443
+#define __NR_syscalls 447
/*
* 32 bit systems traditionally used different
--
2.30.2
next prev parent reply other threads:[~2021-04-01 20:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 20:51 [PATCH v32 00/12] Landlock LSM Mickaël Salaün
2021-04-01 20:51 ` [PATCH v32 01/12] landlock: Add object management Mickaël Salaün
2021-04-01 20:51 ` [PATCH v32 02/12] landlock: Add ruleset and domain management Mickaël Salaün
2021-04-01 20:51 ` [PATCH v32 03/12] landlock: Set up the security framework and manage credentials Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 04/12] landlock: Add ptrace restrictions Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 05/12] LSM: Infrastructure management of the superblock Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 06/12] fs,security: Add sb_delete hook Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 07/12] landlock: Support filesystem access-control Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 08/12] landlock: Add syscall implementations Mickaël Salaün
2021-04-01 20:52 ` Mickaël Salaün [this message]
2021-04-01 20:52 ` [PATCH v32 10/12] selftests/landlock: Add user space tests Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 11/12] samples/landlock: Add a sandbox manager example Mickaël Salaün
2021-04-01 20:52 ` [PATCH v32 12/12] landlock: Add user and kernel documentation Mickaël Salaün
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