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author | Arnd Bergmann <arnd@arndb.de> | 2018-12-31 14:38:26 +0100 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2019-01-25 17:22:50 +0100 |
commit | 0d6040d4681735dfc47565de288525de405a5c99 (patch) | |
tree | c4e05f2bf6f6e50adc1e55f701a29e37bef99583 | |
parent | 275f22148e8720e84b180d9e0cdf8abfd69bac5b (diff) | |
download | linux-stable-0d6040d4681735dfc47565de288525de405a5c99.tar.gz linux-stable-0d6040d4681735dfc47565de288525de405a5c99.tar.bz2 linux-stable-0d6040d4681735dfc47565de288525de405a5c99.zip |
arch: add split IPC system calls where needed
The IPC system call handling is highly inconsistent across architectures,
some use sys_ipc, some use separate calls, and some use both. We also
have some architectures that require passing IPC_64 in the flags, and
others that set it implicitly.
For the addition of a y2038 safe semtimedop() system call, I chose to only
support the separate entry points, but that requires first supporting
the regular ones with their own syscall numbers.
The IPC_64 is now implied by the new semctl/shmctl/msgctl system
calls even on the architectures that require passing it with the ipc()
multiplexer.
I'm not adding the new semtimedop() or semop() on 32-bit architectures,
those will get implemented using the new semtimedop_time64() version
that gets added along with the other time64 calls.
Three 64-bit architectures (powerpc, s390 and sparc) get semtimedop().
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
-rw-r--r-- | arch/m68k/kernel/syscalls/syscall.tbl | 11 | ||||
-rw-r--r-- | arch/mips/kernel/syscalls/syscall_o32.tbl | 11 | ||||
-rw-r--r-- | arch/powerpc/kernel/syscalls/syscall.tbl | 13 | ||||
-rw-r--r-- | arch/s390/kernel/syscalls/syscall.tbl | 12 | ||||
-rw-r--r-- | arch/sh/kernel/syscalls/syscall.tbl | 11 | ||||
-rw-r--r-- | arch/sparc/kernel/syscalls/syscall.tbl | 12 | ||||
-rw-r--r-- | arch/x86/entry/syscalls/syscall_32.tbl | 11 | ||||
-rw-r--r-- | arch/x86/entry/syscalls/syscall_64.tbl | 2 | ||||
-rw-r--r-- | include/uapi/asm-generic/unistd.h | 1 |
9 files changed, 84 insertions, 0 deletions
diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl index 85779d6ef935..5354ba02eed2 100644 --- a/arch/m68k/kernel/syscalls/syscall.tbl +++ b/arch/m68k/kernel/syscalls/syscall.tbl @@ -388,3 +388,14 @@ 378 common pwritev2 sys_pwritev2 379 common statx sys_statx 380 common seccomp sys_seccomp +# room for arch specific calls +393 common semget sys_semget +394 common semctl sys_semctl +395 common shmget sys_shmget +396 common shmctl sys_shmctl +397 common shmat sys_shmat +398 common shmdt sys_shmdt +399 common msgget sys_msgget +400 common msgsnd sys_msgsnd +401 common msgrcv sys_msgrcv +402 common msgctl sys_msgctl diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index 3d5a47b80d2b..fa47ea8cc6ef 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -380,3 +380,14 @@ 366 o32 statx sys_statx 367 o32 rseq sys_rseq 368 o32 io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents +# room for arch specific calls +393 o32 semget sys_semget +394 o32 semctl sys_semctl compat_sys_semctl +395 o32 shmget sys_shmget +396 o32 shmctl sys_shmctl compat_sys_shmctl +397 o32 shmat sys_shmat compat_sys_shmat +398 o32 shmdt sys_shmdt +399 o32 msgget sys_msgget +400 o32 msgsnd sys_msgsnd compat_sys_msgsnd +401 o32 msgrcv sys_msgrcv compat_sys_msgrcv +402 o32 msgctl sys_msgctl compat_sys_msgctl diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl index db3bbb8744af..7555874ce39c 100644 --- a/arch/powerpc/kernel/syscalls/syscall.tbl +++ b/arch/powerpc/kernel/syscalls/syscall.tbl @@ -414,6 +414,7 @@ 363 spu switch_endian sys_ni_syscall 364 common userfaultfd sys_userfaultfd 365 common membarrier sys_membarrier +# 366-377 originally left for IPC, now unused 378 nospu mlock2 sys_mlock2 379 nospu copy_file_range sys_copy_file_range 380 common preadv2 sys_preadv2 compat_sys_preadv2 @@ -425,3 +426,15 @@ 386 nospu pkey_mprotect sys_pkey_mprotect 387 nospu rseq sys_rseq 388 nospu io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents +# room for arch specific syscalls +392 64 semtimedop sys_semtimedop +393 common semget sys_semget +394 common semctl sys_semctl compat_sys_semctl +395 common shmget sys_shmget +396 common shmctl sys_shmctl compat_sys_shmctl +397 common shmat sys_shmat compat_sys_shmat +398 common shmdt sys_shmdt +399 common msgget sys_msgget +400 common msgsnd sys_msgsnd compat_sys_msgsnd +401 common msgrcv sys_msgrcv compat_sys_msgrcv +402 common msgctl sys_msgctl compat_sys_msgctl diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl index 7413fd318e2a..0bccb01c6202 100644 --- a/arch/s390/kernel/syscalls/syscall.tbl +++ b/arch/s390/kernel/syscalls/syscall.tbl @@ -391,3 +391,15 @@ 381 common kexec_file_load sys_kexec_file_load sys_kexec_file_load 382 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents 383 common rseq sys_rseq sys_rseq +# room for arch specific syscalls +392 64 semtimedop sys_semtimedop - +393 common semget sys_semget sys_semget +394 common semctl sys_semctl compat_sys_semctl +395 common shmget sys_shmget sys_shmget +396 common shmctl sys_shmctl compat_sys_shmctl +397 common shmat sys_shmat compat_sys_shmat +398 common shmdt sys_shmdt sys_shmdt +399 common msgget sys_msgget sys_msgget +400 common msgsnd sys_msgsnd compat_sys_msgsnd +401 common msgrcv sys_msgrcv compat_sys_msgrcv +402 common msgctl sys_msgctl compat_sys_msgctl diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl index a70db013dbc7..6d0b84e3ef2d 100644 --- a/arch/sh/kernel/syscalls/syscall.tbl +++ b/arch/sh/kernel/syscalls/syscall.tbl @@ -391,3 +391,14 @@ 381 common preadv2 sys_preadv2 382 common pwritev2 sys_pwritev2 383 common statx sys_statx +# room for arch specific syscalls +393 common semget sys_semget +394 common semctl sys_semctl +395 common shmget sys_shmget +396 common shmctl sys_shmctl +397 common shmat sys_shmat +398 common shmdt sys_shmdt +399 common msgget sys_msgget +400 common msgsnd sys_msgsnd +401 common msgrcv sys_msgrcv +402 common msgctl sys_msgctl diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl index c8c77c05ea97..8c9580302422 100644 --- a/arch/sparc/kernel/syscalls/syscall.tbl +++ b/arch/sparc/kernel/syscalls/syscall.tbl @@ -407,3 +407,15 @@ 359 common pwritev2 sys_pwritev2 compat_sys_pwritev2 360 common statx sys_statx 361 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents +# room for arch specific syscalls +392 64 semtimedop sys_semtimedop +393 common semget sys_semget +394 common semctl sys_semctl compat_sys_semctl +395 common shmget sys_shmget +396 common shmctl sys_shmctl compat_sys_shmctl +397 common shmat sys_shmat compat_sys_shmat +398 common shmdt sys_shmdt +399 common msgget sys_msgget +400 common msgsnd sys_msgsnd compat_sys_msgsnd +401 common msgrcv sys_msgrcv compat_sys_msgrcv +402 common msgctl sys_msgctl compat_sys_msgctl diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 3cf7b533b3d1..2be1d0eb7754 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -398,3 +398,14 @@ 384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl 385 i386 io_pgetevents sys_io_pgetevents __ia32_compat_sys_io_pgetevents 386 i386 rseq sys_rseq __ia32_sys_rseq +# don't use numbers 387 through 392, add new calls at the end +393 i386 semget sys_semget __ia32_sys_semget +394 i386 semctl sys_semctl __ia32_compat_sys_semctl +395 i386 shmget sys_shmget __ia32_sys_shmget +396 i386 shmctl sys_shmctl __ia32_compat_sys_shmctl +397 i386 shmat sys_shmat __ia32_compat_sys_shmat +398 i386 shmdt sys_shmdt __ia32_sys_shmdt +399 i386 msgget sys_msgget __ia32_sys_msgget +400 i386 msgsnd sys_msgsnd __ia32_compat_sys_msgsnd +401 i386 msgrcv sys_msgrcv __ia32_compat_sys_msgrcv +402 i386 msgctl sys_msgctl __ia32_compat_sys_msgctl diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index f0b1709a5ffb..9d8128ef50a9 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -343,6 +343,8 @@ 332 common statx __x64_sys_statx 333 common io_pgetevents __x64_sys_io_pgetevents 334 common rseq __x64_sys_rseq +# don't use numbers 387 through 423, add new calls after the last +# 'common' entry # # x32-specific system call numbers start at 512 to avoid cache impact diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index d90127298f12..509484dbfd5d 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -740,6 +740,7 @@ __SC_COMP(__NR_io_pgetevents, sys_io_pgetevents, compat_sys_io_pgetevents) __SYSCALL(__NR_rseq, sys_rseq) #define __NR_kexec_file_load 294 __SYSCALL(__NR_kexec_file_load, sys_kexec_file_load) +/* 295 through 402 are unassigned to sync up with generic numbers, don't use */ #undef __NR_syscalls #define __NR_syscalls 295 |