| Message ID | 20200707180955.53024-10-mic@digikod.net (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Landlock LSM | expand |
On Tue, Jul 7, 2020 at 8:10 PM Mickaël Salaün <mic@digikod.net> wrote: > index f4a01305d9a6..a63a411a74d5 100644 > --- a/include/uapi/asm-generic/unistd.h > +++ b/include/uapi/asm-generic/unistd.h > @@ -857,9 +857,11 @@ __SYSCALL(__NR_openat2, sys_openat2) > __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) > #define __NR_faccessat2 439 > __SYSCALL(__NR_faccessat2, sys_faccessat2) > +#define __NR_landlock 440 > +__SYSCALL(__NR_landlock, sys_landlock) > > #undef __NR_syscalls > -#define __NR_syscalls 440 > +#define __NR_syscalls 441 In linux-next, we already have: +#define __NR_watch_mount 440 +#define __NR_watch_sb 441 +#define __NR_fsinfo 442 +#define __NR_process_madvise 443 You may want to increase the number again. Arnd
On 08/07/2020 09:22, Arnd Bergmann wrote: > On Tue, Jul 7, 2020 at 8:10 PM Mickaël Salaün <mic@digikod.net> wrote: > >> index f4a01305d9a6..a63a411a74d5 100644 >> --- a/include/uapi/asm-generic/unistd.h >> +++ b/include/uapi/asm-generic/unistd.h >> @@ -857,9 +857,11 @@ __SYSCALL(__NR_openat2, sys_openat2) >> __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) >> #define __NR_faccessat2 439 >> __SYSCALL(__NR_faccessat2, sys_faccessat2) >> +#define __NR_landlock 440 >> +__SYSCALL(__NR_landlock, sys_landlock) >> >> #undef __NR_syscalls >> -#define __NR_syscalls 440 >> +#define __NR_syscalls 441 > > In linux-next, we already have: > > +#define __NR_watch_mount 440 > +#define __NR_watch_sb 441 > +#define __NR_fsinfo 442 > +#define __NR_process_madvise 443 > > You may want to increase the number again. > > Arnd > OK, I'll rebase the next series on linux-next. Do you know if there is other syscalls on their way to linux-next? Are the other parts of arch/syscall OK for you?
On Wed, Jul 8, 2020 at 9:31 AM Mickaël Salaün <mic@digikod.net> wrote: > On 08/07/2020 09:22, Arnd Bergmann wrote: > > On Tue, Jul 7, 2020 at 8:10 PM Mickaël Salaün <mic@digikod.net> wrote: > > > >> index f4a01305d9a6..a63a411a74d5 100644 > >> --- a/include/uapi/asm-generic/unistd.h > >> +++ b/include/uapi/asm-generic/unistd.h > > OK, I'll rebase the next series on linux-next. Just change the number to the next free one, without actually rebasing. It's always a bit messy to have multiple syscalls added, but I think that causes the least confusion. > Do you know if there is other syscalls on their way to linux-next? None that I'm aware of. > Are the other parts of arch/syscall OK for you? The arch/* and include/uapi/asm-generic changes look ok to me. I'll reply to the syscall implementation separately/ Arnd
On 08/07/2020 09:47, Arnd Bergmann wrote: > On Wed, Jul 8, 2020 at 9:31 AM Mickaël Salaün <mic@digikod.net> wrote: >> On 08/07/2020 09:22, Arnd Bergmann wrote: >>> On Tue, Jul 7, 2020 at 8:10 PM Mickaël Salaün <mic@digikod.net> wrote: >>> >>>> index f4a01305d9a6..a63a411a74d5 100644 >>>> --- a/include/uapi/asm-generic/unistd.h >>>> +++ b/include/uapi/asm-generic/unistd.h >> >> OK, I'll rebase the next series on linux-next. > > Just change the number to the next free one, without actually rebasing. > It's always a bit messy to have multiple syscalls added, but I think that > causes the least confusion. OK, but this will lead to two merge conflicts: patch 8 (asmlinkage) and patch 9 (tbl files). Do you want me to update the tools/perf/arch/*.tbl too?
On Wed, Jul 8, 2020 at 10:23 AM Mickaël Salaün <mic@digikod.net> wrote: > On 08/07/2020 09:47, Arnd Bergmann wrote: > > On Wed, Jul 8, 2020 at 9:31 AM Mickaël Salaün <mic@digikod.net> wrote: > >> On 08/07/2020 09:22, Arnd Bergmann wrote: > >>> On Tue, Jul 7, 2020 at 8:10 PM Mickaël Salaün <mic@digikod.net> wrote: > >>> > >>>> index f4a01305d9a6..a63a411a74d5 100644 > >>>> --- a/include/uapi/asm-generic/unistd.h > >>>> +++ b/include/uapi/asm-generic/unistd.h > >> > >> OK, I'll rebase the next series on linux-next. > > > > Just change the number to the next free one, without actually rebasing. > > It's always a bit messy to have multiple syscalls added, but I think that > > causes the least confusion. > > OK, but this will lead to two merge conflicts: patch 8 (asmlinkage) and > patch 9 (tbl files). Yes, there isn't really much one can do about that. > Do you want me to update the tools/perf/arch/*.tbl too? No, I would leave them unchanged. Arnd
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl index 5ddd128d4b7a..f11e690e0419 100644 --- a/arch/alpha/kernel/syscalls/syscall.tbl +++ b/arch/alpha/kernel/syscalls/syscall.tbl @@ -478,3 +478,4 @@ 547 common openat2 sys_openat2 548 common pidfd_getfd sys_pidfd_getfd 549 common faccessat2 sys_faccessat2 +550 common landlock sys_landlock diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index d5cae5ffede0..1ebac2411785 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -452,3 +452,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 3b859596840d..b3b2019f8d16 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 441 #endif #define __ARCH_WANT_SYS_CLONE diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index 6d95d0c8bf2f..083f7994d924 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -885,6 +885,8 @@ __SYSCALL(__NR_openat2, sys_openat2) __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) #define __NR_faccessat2 439 __SYSCALL(__NR_faccessat2, sys_faccessat2) +#define __NR_landlock 440 +__SYSCALL(__NR_landlock, sys_landlock) /* * 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..210692084aff 100644 --- a/arch/ia64/kernel/syscalls/syscall.tbl +++ b/arch/ia64/kernel/syscalls/syscall.tbl @@ -359,3 +359,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl index f71b1bbcc198..31ed52871053 100644 --- a/arch/m68k/kernel/syscalls/syscall.tbl +++ b/arch/m68k/kernel/syscalls/syscall.tbl @@ -438,3 +438,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl index edacc4561f2b..56a1d49884a5 100644 --- a/arch/microblaze/kernel/syscalls/syscall.tbl +++ b/arch/microblaze/kernel/syscalls/syscall.tbl @@ -444,3 +444,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl index f777141f5256..37457511334a 100644 --- a/arch/mips/kernel/syscalls/syscall_n32.tbl +++ b/arch/mips/kernel/syscalls/syscall_n32.tbl @@ -377,3 +377,4 @@ 437 n32 openat2 sys_openat2 438 n32 pidfd_getfd sys_pidfd_getfd 439 n32 faccessat2 sys_faccessat2 +440 n32 landlock sys_landlock diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl index da8c76394e17..0c68b01f47d2 100644 --- a/arch/mips/kernel/syscalls/syscall_n64.tbl +++ b/arch/mips/kernel/syscalls/syscall_n64.tbl @@ -353,3 +353,4 @@ 437 n64 openat2 sys_openat2 438 n64 pidfd_getfd sys_pidfd_getfd 439 n64 faccessat2 sys_faccessat2 +440 n64 landlock sys_landlock diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index 13280625d312..7e4ba2c41f8c 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -426,3 +426,4 @@ 437 o32 openat2 sys_openat2 438 o32 pidfd_getfd sys_pidfd_getfd 439 o32 faccessat2 sys_faccessat2 +440 o32 landlock sys_landlock diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl index 5a758fa6ec52..40d14e1480cb 100644 --- a/arch/parisc/kernel/syscalls/syscall.tbl +++ b/arch/parisc/kernel/syscalls/syscall.tbl @@ -436,3 +436,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl index f833a3190822..1615462665e1 100644 --- a/arch/powerpc/kernel/syscalls/syscall.tbl +++ b/arch/powerpc/kernel/syscalls/syscall.tbl @@ -528,3 +528,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl index bfdcb7633957..5f0835738e90 100644 --- a/arch/s390/kernel/syscalls/syscall.tbl +++ b/arch/s390/kernel/syscalls/syscall.tbl @@ -441,3 +441,4 @@ 437 common openat2 sys_openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 sys_faccessat2 +440 common landlock sys_landlock sys_landlock diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl index acc35daa1b79..6e7414763f10 100644 --- a/arch/sh/kernel/syscalls/syscall.tbl +++ b/arch/sh/kernel/syscalls/syscall.tbl @@ -441,3 +441,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl index 8004a276cb74..b9996e1f70f0 100644 --- a/arch/sparc/kernel/syscalls/syscall.tbl +++ b/arch/sparc/kernel/syscalls/syscall.tbl @@ -484,3 +484,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index d8f8a1a69ed1..1673c287f2e6 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -443,3 +443,4 @@ 437 i386 openat2 sys_openat2 438 i386 pidfd_getfd sys_pidfd_getfd 439 i386 faccessat2 sys_faccessat2 +440 i386 landlock sys_landlock diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index 78847b32e137..b3bae66a2c7c 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -360,6 +360,7 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock # # 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..ea0f0b186e8e 100644 --- a/arch/xtensa/kernel/syscalls/syscall.tbl +++ b/arch/xtensa/kernel/syscalls/syscall.tbl @@ -409,3 +409,4 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common landlock sys_landlock diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index f4a01305d9a6..a63a411a74d5 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -857,9 +857,11 @@ __SYSCALL(__NR_openat2, sys_openat2) __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) #define __NR_faccessat2 439 __SYSCALL(__NR_faccessat2, sys_faccessat2) +#define __NR_landlock 440 +__SYSCALL(__NR_landlock, sys_landlock) #undef __NR_syscalls -#define __NR_syscalls 440 +#define __NR_syscalls 441 /* * 32 bit systems traditionally used different
Wire up the landlock() system call for all architectures. 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 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 | 1 + arch/arm/tools/syscall.tbl | 1 + arch/arm64/include/asm/unistd.h | 2 +- arch/arm64/include/asm/unistd32.h | 2 ++ arch/ia64/kernel/syscalls/syscall.tbl | 1 + arch/m68k/kernel/syscalls/syscall.tbl | 1 + arch/microblaze/kernel/syscalls/syscall.tbl | 1 + arch/mips/kernel/syscalls/syscall_n32.tbl | 1 + arch/mips/kernel/syscalls/syscall_n64.tbl | 1 + arch/mips/kernel/syscalls/syscall_o32.tbl | 1 + arch/parisc/kernel/syscalls/syscall.tbl | 1 + arch/powerpc/kernel/syscalls/syscall.tbl | 1 + arch/s390/kernel/syscalls/syscall.tbl | 1 + arch/sh/kernel/syscalls/syscall.tbl | 1 + arch/sparc/kernel/syscalls/syscall.tbl | 1 + arch/x86/entry/syscalls/syscall_32.tbl | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 1 + arch/xtensa/kernel/syscalls/syscall.tbl | 1 + include/uapi/asm-generic/unistd.h | 4 +++- 19 files changed, 22 insertions(+), 2 deletions(-)