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| author | Arnd Bergmann <arnd@arndb.de> | 2018-04-13 13:19:47 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-08-29 16:42:20 +0300 |
| commit | bf4b6a7d371e4d2a23a9d545bee908f67d32b3ea (patch) | |
| tree | eb4d85ea17fd4d5ffed96f264299f78350f00117 /include/uapi/asm-generic | |
| parent | 82b355d161c9525ab8838cc27d3200bc3bc9082d (diff) | |
| download | linux-bf4b6a7d371e4d2a23a9d545bee908f67d32b3ea.tar.xz | |
y2038: Remove stat64 family from default syscall set
New architectures should no longer need stat64, which is not y2038
safe and has been replaced by statx(). This removes the 'select
__ARCH_WANT_STAT64' statement from asm-generic/unistd.h and instead
moves it into the respective asm/unistd.h UAPI header files for each
architecture that uses it today.
In the generic file, the system call number and entry points are now
made conditional, so newly added architectures (e.g. riscv32 or csky)
will never need to carry backwards compatiblity for it.
arm64 is the only 64-bit architecture using the asm-generic/unistd.h
file, and it already sets __ARCH_WANT_NEW_STAT in its headers, and I
use the same #ifdef here: future 64-bit architectures therefore won't
see newstat or stat64 any more. They don't suffer from the y2038 time_t
overflow, but for consistency it seems best to also let them use statx().
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/uapi/asm-generic')
| -rw-r--r-- | include/uapi/asm-generic/unistd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index df4bedb9b01c..538546edbfbd 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -242,10 +242,12 @@ __SYSCALL(__NR_tee, sys_tee) /* fs/stat.c */ #define __NR_readlinkat 78 __SYSCALL(__NR_readlinkat, sys_readlinkat) +#if defined(__ARCH_WANT_NEW_STAT) || defined(__ARCH_WANT_STAT64) #define __NR3264_fstatat 79 __SC_3264(__NR3264_fstatat, sys_fstatat64, sys_newfstatat) #define __NR3264_fstat 80 __SC_3264(__NR3264_fstat, sys_fstat64, sys_newfstat) +#endif /* fs/sync.c */ #define __NR_sync 81 |