From c71d227fc4133f949dae620ed5e3a250b43f2415 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 29 Nov 2017 19:00:41 -0500 Subject: make kernel-side POLL... arch-independent mangle/demangle on the way to/from userland Signed-off-by: Al Viro --- arch/blackfin/include/uapi/asm/poll.h | 19 ++++++++++++++++++- arch/frv/include/uapi/asm/poll.h | 19 +++++++++++++++++-- arch/m68k/include/uapi/asm/poll.h | 17 +++++++++++++++++ arch/mips/include/uapi/asm/poll.h | 17 +++++++++++++++++ arch/sparc/include/uapi/asm/poll.h | 20 ++++++++++++++++++++ arch/xtensa/include/uapi/asm/poll.h | 17 +++++++++++++++++ 6 files changed, 106 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/blackfin/include/uapi/asm/poll.h b/arch/blackfin/include/uapi/asm/poll.h index 961e49056b0a..3b162f2d2970 100644 --- a/arch/blackfin/include/uapi/asm/poll.h +++ b/arch/blackfin/include/uapi/asm/poll.h @@ -9,8 +9,25 @@ #ifndef _UAPI__BFIN_POLL_H #define _UAPI__BFIN_POLL_H -#define POLLWRNORM (__force __poll_t)4 /* POLLOUT */ +#ifndef __KERNEL__ +#define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)256 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif #include diff --git a/arch/frv/include/uapi/asm/poll.h b/arch/frv/include/uapi/asm/poll.h index d7053ada7c69..a44c8f0ebee7 100644 --- a/arch/frv/include/uapi/asm/poll.h +++ b/arch/frv/include/uapi/asm/poll.h @@ -2,12 +2,27 @@ #ifndef _ASM_POLL_H #define _ASM_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)256 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} -#include +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif +#include #undef POLLREMOVE #endif - diff --git a/arch/m68k/include/uapi/asm/poll.h b/arch/m68k/include/uapi/asm/poll.h index 99314937fe5c..d8be239e8141 100644 --- a/arch/m68k/include/uapi/asm/poll.h +++ b/arch/m68k/include/uapi/asm/poll.h @@ -2,8 +2,25 @@ #ifndef __m68k_POLL_H #define __m68k_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)256 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif #include diff --git a/arch/mips/include/uapi/asm/poll.h b/arch/mips/include/uapi/asm/poll.h index e937f8b1b007..3173f8917128 100644 --- a/arch/mips/include/uapi/asm/poll.h +++ b/arch/mips/include/uapi/asm/poll.h @@ -2,8 +2,25 @@ #ifndef __ASM_POLL_H #define __ASM_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)0x0100 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif #include diff --git a/arch/sparc/include/uapi/asm/poll.h b/arch/sparc/include/uapi/asm/poll.h index 595cb12df1f1..2a81e79aa3ea 100644 --- a/arch/sparc/include/uapi/asm/poll.h +++ b/arch/sparc/include/uapi/asm/poll.h @@ -2,11 +2,31 @@ #ifndef __SPARC_POLL_H #define __SPARC_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)256 #define POLLMSG (__force __poll_t)512 #define POLLREMOVE (__force __poll_t)1024 #define POLLRDHUP (__force __poll_t)2048 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2, bit 13 -> bit 11 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6) | + ((v & 0x2000) >> 2); + + +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6) | ((v & 0x800) << 2)); +} +#endif #include diff --git a/arch/xtensa/include/uapi/asm/poll.h b/arch/xtensa/include/uapi/asm/poll.h index 22bbc48b9f85..e3246d41182c 100644 --- a/arch/xtensa/include/uapi/asm/poll.h +++ b/arch/xtensa/include/uapi/asm/poll.h @@ -12,9 +12,26 @@ #ifndef _XTENSA_POLL_H #define _XTENSA_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT #define POLLWRBAND (__force __poll_t)0x0100 #define POLLREMOVE (__force __poll_t)0x0800 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif #include -- cgit v1.2.3