From 82b355d161c9525ab8838cc27d3200bc3bc9082d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 13 Apr 2018 11:50:12 +0200 Subject: y2038: Remove newstat family from default syscall set We have four generations of stat() syscalls: - the oldstat syscalls that are only used on the older architectures - the newstat family that is used on all 64-bit architectures but lacked support for large files on 32-bit architectures. - the stat64 family that is used mostly on 32-bit architectures to replace newstat - statx() to replace all of the above, adding 64-bit timestamps among other things. We already compile stat64 only on those architectures that need it, but newstat is always built, including on those that don't reference it. This adds a new __ARCH_WANT_NEW_STAT symbol along the lines of __ARCH_WANT_OLD_STAT and __ARCH_WANT_STAT64 to control compilation of newstat. All architectures that need it use an explict define, the others now get a little bit smaller, and future architecture (including 64-bit targets) won't ever see it. Acked-by: Geert Uytterhoeven Signed-off-by: Arnd Bergmann --- arch/microblaze/include/asm/unistd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/microblaze/include/asm/unistd.h') diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h index a62d09420a47..a28dc770c9b2 100644 --- a/arch/microblaze/include/asm/unistd.h +++ b/arch/microblaze/include/asm/unistd.h @@ -15,6 +15,7 @@ /* #define __ARCH_WANT_OLD_READDIR */ /* #define __ARCH_WANT_OLD_STAT */ +#define __ARCH_WANT_NEW_STAT #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SYS_ALARM #define __ARCH_WANT_SYS_GETHOSTNAME -- cgit v1.2.3 From caf6f9c8a326cffd1d4b3ff3f1cfba75d159d70b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 13 Apr 2018 12:57:26 +0200 Subject: asm-generic: Remove unneeded __ARCH_WANT_SYS_LLSEEK macro The sys_llseek sytem call is needed on all 32-bit architectures and none of the 64-bit ones, so we can remove the __ARCH_WANT_SYS_LLSEEK guard and simplify the include/asm-generic/unistd.h header further. Since 32-bit tasks can run either natively or in compat mode on 64-bit architectures, we have to check for both !CONFIG_64BIT and CONFIG_COMPAT. There are a few 64-bit architectures that also reference sys_llseek in their 64-bit ABI (e.g. sparc), but I verified that those all select CONFIG_COMPAT, so the #if check is still correct here. It's a bit odd to include it in the syscall table though, as it's the same as sys_lseek() on 64-bit, but with strange calling conventions. Acked-by: Geert Uytterhoeven Reviewed-by: Christoph Hellwig Signed-off-by: Arnd Bergmann --- arch/arm/include/asm/unistd.h | 1 - arch/arm64/include/asm/unistd.h | 1 - arch/m68k/include/asm/unistd.h | 1 - arch/microblaze/include/asm/unistd.h | 1 - arch/mips/include/asm/unistd.h | 1 - arch/parisc/include/asm/unistd.h | 1 - arch/powerpc/include/asm/unistd.h | 1 - arch/s390/include/asm/unistd.h | 1 - arch/sh/include/asm/unistd.h | 1 - arch/sparc/include/asm/unistd.h | 1 - arch/x86/include/asm/unistd.h | 1 - arch/xtensa/include/asm/unistd.h | 1 - fs/read_write.c | 2 +- include/asm-generic/unistd.h | 9 --------- 14 files changed, 1 insertion(+), 22 deletions(-) (limited to 'arch/microblaze/include/asm/unistd.h') diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index 07e58010d597..8f1159c26f20 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -21,7 +21,6 @@ #define __ARCH_WANT_SYS_GETHOSTNAME #define __ARCH_WANT_SYS_PAUSE #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_SIGPENDING #define __ARCH_WANT_SYS_SIGPROCMASK diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index e0d0f5b856e7..2af308f13463 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -18,7 +18,6 @@ #define __ARCH_WANT_SYS_GETHOSTNAME #define __ARCH_WANT_SYS_PAUSE #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_SIGPENDING #define __ARCH_WANT_SYS_SIGPROCMASK diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h index db22cdadc38a..e680031bda7b 100644 --- a/arch/m68k/include/asm/unistd.h +++ b/arch/m68k/include/asm/unistd.h @@ -22,7 +22,6 @@ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLD_GETRLIMIT #define __ARCH_WANT_SYS_OLD_MMAP diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h index a28dc770c9b2..f42c40f5001b 100644 --- a/arch/microblaze/include/asm/unistd.h +++ b/arch/microblaze/include/asm/unistd.h @@ -27,7 +27,6 @@ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE /* #define __ARCH_WANT_SYS_OLD_GETRLIMIT */ #define __ARCH_WANT_SYS_OLDUMOUNT diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h index d7878b3e16d8..c2174b80e50e 100644 --- a/arch/mips/include/asm/unistd.h +++ b/arch/mips/include/asm/unistd.h @@ -34,7 +34,6 @@ #define __ARCH_WANT_SYS_WAITPID #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLD_UNAME #define __ARCH_WANT_SYS_OLDUMOUNT diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h index b36273bacca7..a0c38374fff0 100644 --- a/arch/parisc/include/asm/unistd.h +++ b/arch/parisc/include/asm/unistd.h @@ -156,7 +156,6 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLDUMOUNT #define __ARCH_WANT_SYS_SIGPENDING diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index 8b37e01817be..9326c9133516 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -36,7 +36,6 @@ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLD_GETRLIMIT #define __ARCH_WANT_SYS_OLD_UNAME diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h index 1d181373288a..a2d583ea526d 100644 --- a/arch/s390/include/asm/unistd.h +++ b/arch/s390/include/asm/unistd.h @@ -26,7 +26,6 @@ #define __ARCH_WANT_SYS_IPC #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLD_GETRLIMIT #define __ARCH_WANT_SYS_OLD_MMAP diff --git a/arch/sh/include/asm/unistd.h b/arch/sh/include/asm/unistd.h index a845b57eac69..a99234b61051 100644 --- a/arch/sh/include/asm/unistd.h +++ b/arch/sh/include/asm/unistd.h @@ -20,7 +20,6 @@ # define __ARCH_WANT_SYS_SOCKETCALL # define __ARCH_WANT_SYS_FADVISE64 # define __ARCH_WANT_SYS_GETPGRP -# define __ARCH_WANT_SYS_LLSEEK # define __ARCH_WANT_SYS_NICE # define __ARCH_WANT_SYS_OLD_GETRLIMIT # define __ARCH_WANT_SYS_OLD_UNAME diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 3544244685e1..f7514d3eae7b 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -34,7 +34,6 @@ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLDUMOUNT #define __ARCH_WANT_SYS_SIGPENDING diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h index 35b66bbf8028..153d2a5e6b02 100644 --- a/arch/x86/include/asm/unistd.h +++ b/arch/x86/include/asm/unistd.h @@ -38,7 +38,6 @@ # define __ARCH_WANT_SYS_FADVISE64 # define __ARCH_WANT_SYS_GETHOSTNAME # define __ARCH_WANT_SYS_GETPGRP -# define __ARCH_WANT_SYS_LLSEEK # define __ARCH_WANT_SYS_NICE # define __ARCH_WANT_SYS_OLDUMOUNT # define __ARCH_WANT_SYS_OLD_GETRLIMIT diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h index 0d532ab60b37..574e5520968c 100644 --- a/arch/xtensa/include/asm/unistd.h +++ b/arch/xtensa/include/asm/unistd.h @@ -8,7 +8,6 @@ #define __ARCH_WANT_NEW_STAT #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SYS_UTIME -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_GETPGRP /* diff --git a/fs/read_write.c b/fs/read_write.c index 39b4a21dd933..e892e409386b 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -331,7 +331,7 @@ COMPAT_SYSCALL_DEFINE3(lseek, unsigned int, fd, compat_off_t, offset, unsigned i } #endif -#ifdef __ARCH_WANT_SYS_LLSEEK +#if !defined(CONFIG_64BIT) || defined(CONFIG_COMPAT) SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high, unsigned long, offset_low, loff_t __user *, result, unsigned int, whence) diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index ea74eca8463f..71d2fcf9dbcd 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -1,12 +1,3 @@ /* SPDX-License-Identifier: GPL-2.0 */ #include #include - -/* - * These are required system calls, we should - * invert the logic eventually and let them - * be selected by default. - */ -#if __BITS_PER_LONG == 32 -#define __ARCH_WANT_SYS_LLSEEK -#endif -- cgit v1.2.3