From: Yury Norov <ynorov@caviumnetworks.com>
To: <arnd@arndb.de>, <catalin.marinas@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arch@vger.kernel.org>, <libc-alpha@sourceware.org>
Cc: <schwidefsky@de.ibm.com>, <heiko.carstens@de.ibm.com>,
<ynorov@caviumnetworks.com>, <pinskia@gmail.com>,
<broonie@kernel.org>, <joseph@codesourcery.com>,
<christoph.muellner@theobroma-systems.com>,
<bamvor.zhangjian@huawei.com>, <szabolcs.nagy@arm.com>,
<klimov.linux@gmail.com>, <Nathan_Lynch@mentor.com>,
<agraf@suse.de>, <Prasun.Kapoor@caviumnetworks.com>,
<kilobyte@angband.pl>, <geert@linux-m68k.org>,
<philipp.tomsich@theobroma-systems.com>,
<manuel.montezelo@gmail.com>, <linyongting@huawei.com>,
<maxim.kuvyrkov@linaro.org>, <davem@davemloft.net>
Subject: [PATCH 02/19] 32-bit ABI: introduce ARCH_32BIT_OFF_T config option
Date: Sat, 18 Jun 2016 02:54:11 +0300 [thread overview]
Message-ID: <1466207668-10549-3-git-send-email-ynorov@caviumnetworks.com> (raw)
In-Reply-To: <1466207668-10549-1-git-send-email-ynorov@caviumnetworks.com>
All new 32-bit architectures should have 64-bit off_t type, but existing
architectures has 32-bit ones.
To handle it, new config option is added to arch/Kconfig that defaults
ARCH_32BIT_OFF_T to be disabled for non-64 bit architectures. All existing
32-bit architectures enable it explicitly here.
New option affects force_o_largefile() behaviour. Namely, if off_t is
64-bits long, we have no reason to reject user to open big files.
Note that even if architectures has only 64-bit off_t in the kernel
(arc, c6x, h8300, hexagon, metag, nios2, openrisc, tile32 and unicore32),
a libc may use 32-bit off_t, and therefore want to limit the file size
to 4GB unless specified differently in the open flags.
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
---
arch/Kconfig | 4 ++++
arch/arc/Kconfig | 1 +
arch/arm/Kconfig | 1 +
arch/blackfin/Kconfig | 1 +
arch/cris/Kconfig | 1 +
arch/frv/Kconfig | 1 +
arch/h8300/Kconfig | 1 +
arch/hexagon/Kconfig | 1 +
arch/m32r/Kconfig | 1 +
arch/m68k/Kconfig | 1 +
arch/metag/Kconfig | 1 +
arch/microblaze/Kconfig | 1 +
arch/mips/Kconfig | 1 +
arch/mn10300/Kconfig | 1 +
arch/nios2/Kconfig | 1 +
arch/openrisc/Kconfig | 1 +
arch/parisc/Kconfig | 1 +
arch/powerpc/Kconfig | 1 +
arch/score/Kconfig | 1 +
arch/sh/Kconfig | 1 +
arch/sparc/Kconfig | 1 +
arch/tile/Kconfig | 1 +
arch/unicore32/Kconfig | 1 +
arch/x86/Kconfig | 1 +
arch/x86/um/Kconfig | 1 +
arch/xtensa/Kconfig | 1 +
include/linux/fcntl.h | 2 +-
27 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/arch/Kconfig b/arch/Kconfig
index d794384..fdfc4ad 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -234,6 +234,10 @@ config ARCH_THREAD_INFO_ALLOCATOR
config ARCH_WANTS_DYNAMIC_TASK_STRUCT
bool
+config ARCH_32BIT_OFF_T
+ bool
+ depends on !64BIT
+
config HAVE_REGS_AND_STACK_ACCESS_API
bool
help
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 0d3e59f..d5ca749 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -9,6 +9,7 @@
config ARC
def_bool y
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
+ select ARCH_32BIT_OFF_T
select BUILDTIME_EXTABLE_SORT
select CLKSRC_OF
select CLONE_BACKWARDS
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 90542db..d84122a 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1,6 +1,7 @@
config ARM
bool
default y
+ select ARCH_32BIT_OFF_T
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 28c63fe..097e7a5 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -12,6 +12,7 @@ config RWSEM_XCHGADD_ALGORITHM
config BLACKFIN
def_bool y
+ select ARCH_32BIT_OFF_T
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_DYNAMIC_FTRACE
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index deba266..b1376a9 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -50,6 +50,7 @@ config LOCKDEP_SUPPORT
config CRIS
bool
default y
+ select ARCH_32BIT_OFF_T
select HAVE_IDE
select GENERIC_ATOMIC64
select HAVE_UID16
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index eefd9a4..2f14904 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -1,6 +1,7 @@
config FRV
bool
default y
+ select ARCH_32BIT_OFF_T
select HAVE_IDE
select HAVE_ARCH_TRACEHOOK
select HAVE_PERF_EVENTS
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 3ae8525..29bbcb1 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -1,5 +1,6 @@
config H8300
def_bool y
+ select ARCH_32BIT_OFF_T
select GENERIC_ATOMIC64
select HAVE_UID16
select VIRT_TO_BUS
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 57298e7..df84602 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -3,6 +3,7 @@ comment "Linux Kernel Configuration for Hexagon"
config HEXAGON
def_bool y
+ select ARCH_32BIT_OFF_T
select HAVE_OPROFILE
# Other pending projects/to-do items.
# select HAVE_REGS_AND_STACK_ACCESS_API
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 3cc8498..efa10d3 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -1,6 +1,7 @@
config M32R
bool
default y
+ select ARCH_32BIT_OFF_T
select HAVE_IDE
select HAVE_OPROFILE
select INIT_ALL_POSSIBLE
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 498b567..e9897e4 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -1,6 +1,7 @@
config M68K
bool
default y
+ select ARCH_32BIT_OFF_T
select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
select HAVE_IDE
select HAVE_AOUT if MMU
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig
index 5b7a45d..c337192 100644
--- a/arch/metag/Kconfig
+++ b/arch/metag/Kconfig
@@ -1,5 +1,6 @@
config METAG
def_bool y
+ select ARCH_32BIT_OFF_T
select EMBEDDED
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 636e072..3c5f3d6 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -1,5 +1,6 @@
config MICROBLAZE
def_bool y
+ select ARCH_32BIT_OFF_T
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ac91939..231b519 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1,6 +1,7 @@
config MIPS
bool
default y
+ select ARCH_32BIT_OFF_T if !64BIT
select ARCH_SUPPORTS_UPROBES
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 9627e81..002b06f 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -1,6 +1,7 @@
config MN10300
def_bool y
select HAVE_EXIT_THREAD
+ select ARCH_32BIT_OFF_T
select HAVE_OPROFILE
select HAVE_UID16
select GENERIC_IRQ_SHOW
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 51a56c8..f9273c9 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -1,5 +1,6 @@
config NIOS2
def_bool y
+ select ARCH_32BIT_OFF_T
select CLKSRC_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 142cb05..499649a 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -5,6 +5,7 @@
config OPENRISC
def_bool y
+ select ARCH_32BIT_OFF_T
select OF
select OF_EARLY_FLATTREE
select IRQ_DOMAIN
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index dc11738..1cd0e29 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -1,5 +1,6 @@
config PARISC
def_bool y
+ select ARCH_32BIT_OFF_T if !64BIT
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_MIGHT_HAVE_PC_PARPORT
select HAVE_IDE
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 01f7464..4d589ae 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -85,6 +85,7 @@ config ARCH_HAS_DMA_SET_COHERENT_MASK
config PPC
bool
default y
+ select ARCH_32BIT_OFF_T if PPC32
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select BINFMT_ELF
diff --git a/arch/score/Kconfig b/arch/score/Kconfig
index 507d631..0a9484b 100644
--- a/arch/score/Kconfig
+++ b/arch/score/Kconfig
@@ -2,6 +2,7 @@ menu "Machine selection"
config SCORE
def_bool y
+ select ARCH_32BIT_OFF_T
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
select GENERIC_ATOMIC64
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e803a83..8f5f753 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -54,6 +54,7 @@ config SUPERH
config SUPERH32
def_bool ARCH = "sh"
+ select ARCH_32BIT_OFF_T
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_IOREMAP_PROT if MMU && !X2TLB
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 546293d..f8f6cfe 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -46,6 +46,7 @@ config SPARC
config SPARC32
def_bool !64BIT
+ select ARCH_32BIT_OFF_T
select GENERIC_ATOMIC64
select CLZ_TAB
select HAVE_UID16
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4820a02..79434be 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -4,6 +4,7 @@
config TILE
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+ select ARCH_32BIT_OFF_T if !64BIT
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAVE_NMI_SAFE_CMPXCHG
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index e5602ee..b995104 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -1,6 +1,7 @@
config UNICORE32
def_bool y
select ARCH_HAS_DEVMEM_IS_ALLOWED
+ select ARCH_32BIT_OFF_T
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select HAVE_MEMBLOCK
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0a7b885..406b8d3 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -20,6 +20,7 @@ config X86
select ACPI_LEGACY_TABLES_LOOKUP if ACPI
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ANON_INODES
+ select ARCH_32BIT_OFF_T if X86_32
select ARCH_CLOCKSOURCE_DATA
select ARCH_DISCARD_MEMBLOCK
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index ed56a1c..8436bcd 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -21,6 +21,7 @@ config 64BIT
config X86_32
def_bool !64BIT
select HAVE_AOUT
+ select ARCH_32BIT_OFF_T
select ARCH_WANT_IPC_PARSE_VERSION
select MODULES_USE_ELF_REL
select CLONE_BACKWARDS
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 64336f6..1eeca06 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -3,6 +3,7 @@ config ZONE_DMA
config XTENSA
def_bool y
+ select ARCH_32BIT_OFF_T
select ARCH_WANT_FRAME_POINTERS
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT
diff --git a/include/linux/fcntl.h b/include/linux/fcntl.h
index 76ce329..46960a1 100644
--- a/include/linux/fcntl.h
+++ b/include/linux/fcntl.h
@@ -5,7 +5,7 @@
#ifndef force_o_largefile
-#define force_o_largefile() (BITS_PER_LONG != 32)
+#define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
#endif
#if BITS_PER_LONG == 32
--
2.7.4
next prev parent reply other threads:[~2016-06-17 23:55 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 23:54 [RFC nowrap: PATCH v7 00/19] ILP32 for ARM64 Yury Norov
2016-06-17 23:54 ` [PATCH 01/19] compat ABI: use non-compat openat and open_by_handle_at variants Yury Norov
2016-06-27 7:47 ` Andreas Schwab
2016-08-15 14:30 ` Yury Norov
2016-08-25 15:52 ` Arnd Bergmann
2016-08-29 8:43 ` Yury Norov
2016-06-17 23:54 ` Yury Norov [this message]
2016-06-17 23:54 ` [PATCH 03/19] arm64: ilp32: add documentation on the ILP32 ABI for ARM64 Yury Norov
2016-06-17 23:54 ` [PATCH 04/19] arm64: ensure the kernel is compiled for LP64 Yury Norov
2016-06-17 23:54 ` [PATCH 05/19] arm64: rename COMPAT to AARCH32_EL0 in Kconfig Yury Norov
2016-08-11 7:35 ` Zhangjian (Bamvor)
2016-08-11 8:53 ` Arnd Bergmann
2016-08-11 14:50 ` Catalin Marinas
2016-08-11 15:16 ` Arnd Bergmann
2016-08-11 16:30 ` Catalin Marinas
2016-08-11 20:29 ` Arnd Bergmann
2016-08-12 14:36 ` Catalin Marinas
2016-08-13 15:17 ` Yury Norov
2016-08-15 9:38 ` Catalin Marinas
2016-06-17 23:54 ` [PATCH 06/19] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 Yury Norov
2016-06-17 23:54 ` [PATCH 07/19] thread: move thread bits accessors to separated file Yury Norov
2016-06-17 23:54 ` [PATCH 08/19] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov
2016-06-21 10:23 ` Zhangjian (Bamvor)
2016-06-21 11:34 ` Andreas Schwab
2016-06-21 15:47 ` Arnd Bergmann
2016-06-17 23:54 ` [PATCH 09/19] arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov
2016-06-17 23:54 ` [PATCH 10/19] arm64: introduce binfmt_elf32.c Yury Norov
2016-06-17 23:54 ` [PATCH 11/19] arm64: ilp32: introduce binfmt_ilp32.c Yury Norov
2016-06-17 23:54 ` [PATCH 12/19] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Yury Norov
2016-06-27 4:47 ` zhouchengming
2016-06-27 4:49 ` [PATCH] ilp32: fix {GET,SET}SIGMASK request for ptrace zhouchengming
2016-06-27 5:39 ` Yury Norov
2016-06-27 10:30 ` zhouchengming
2016-08-13 14:52 ` Yury Norov
2016-06-17 23:54 ` [PATCH 13/19] arm64: ilp32: share aarch32 syscall handlers Yury Norov
2016-06-17 23:54 ` [PATCH 14/19] arm64: ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov
2016-06-20 12:48 ` Yury Norov
2016-06-17 23:54 ` [PATCH 15/19] arm64: signal: share lp64 signal routines to ilp32 Yury Norov
2016-06-17 23:54 ` [PATCH 16/19] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov
2016-06-17 23:54 ` [PATCH 17/19] arm64: ilp32: introduce ilp32-specific handlers for sigframe and ucontext Yury Norov
2016-06-17 23:54 ` [PATCH 18/19] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov
2016-06-20 14:54 ` Andreas Schwab
2016-08-13 14:54 ` Yury Norov
2016-06-17 23:54 ` [PATCH 19/19] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov
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