diff options
| author | Yury Norov <ynorov@caviumnetworks.com> | 2015-12-29 12:26:35 +0300 |
|---|---|---|
| committer | Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2018-04-26 21:43:38 +0200 |
| commit | aa39b496457369906919699e28ce8bd328991179 (patch) | |
| tree | 5e2c88a49011d882aa601dc603241e83d1cdf519 /arch/arc | |
| parent | 06475fc0016bc55c6fb027c0005b92d40dbe3dd3 (diff) | |
32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option
All new 32-bit architectures should have 64-bit userspace 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 userspace 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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index d76bf4a83740..9b48c82a12f6 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -11,6 +11,7 @@ config ARC select ARC_TIMERS select ARCH_HAS_SG_CHAIN select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC + select ARCH_32BIT_OFF_T select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select COMMON_CLK |