Messages in this thread Patch in this message |  | | | From | Arnd Bergmann <> | | Subject | [PATCH 5/8] arm: generalize asm/posix_types.h | | Date | Wed, 6 Oct 2010 20:06:17 +0200 |
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This makes the arm version of asm/posix_types.h a variant of the asm-generic version, which allows overriding parts of the type definitions while using the common parts.
The definitions that still need to differ to maintain the user space ABI are:
__kernel_mode_t __kernel_nlink_t __kernel_ipc_pid_t __kernel_uid_t __kernel_gid_t __kernel_uid32_t __kernel_gid32_t __kernel_old_uid_t __kernel_old_gid_t __kernel_old_dev_t
These get defined to their traditional values before the common code.
The definitions of __FD_SET/__FD_CLR__FD_ISSET/__FD_ZERO all get replaced by the slightly different definitions from the asm-generic file, which are more type safe.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm/include/asm/posix_types.h | 207 ++++++++++++++++++++++++++++++------ 1 files changed, 172 insertions(+), 35 deletions(-) diff --git a/arch/arm/include/asm/posix_types.h b/arch/arm/include/asm/posix_types.h index 2446d23..558cf4b 100644 --- a/arch/arm/include/asm/posix_types.h +++ b/arch/arm/include/asm/posix_types.h @@ -14,64 +14,201 @@ #define __ARCH_ARM_POSIX_TYPES_H /* - * This file is generally used by user-level software, so you need to - * be a little careful about namespace pollution etc. Also, we cannot - * assume GCC is being used. + * These are ARM specific overrides for types that + * we traditionally define differently from the + * generic types. */ - -typedef unsigned long __kernel_ino_t; typedef unsigned short __kernel_mode_t; +#define __kernel_mode_t __kernel_mode_t + typedef unsigned short __kernel_nlink_t; -typedef long __kernel_off_t; -typedef int __kernel_pid_t; +#define __kernel_nlink_t __kernel_nlink_t + typedef unsigned short __kernel_ipc_pid_t; +#define __kernel_ipc_pid_t __kernel_ipc_pid_t + typedef unsigned short __kernel_uid_t; +#define __kernel_uid_t __kernel_uid_t + typedef unsigned short __kernel_gid_t; -typedef unsigned int __kernel_size_t; -typedef int __kernel_ssize_t; -typedef int __kernel_ptrdiff_t; -typedef long __kernel_time_t; -typedef long __kernel_suseconds_t; -typedef long __kernel_clock_t; -typedef int __kernel_timer_t; -typedef int __kernel_clockid_t; -typedef int __kernel_daddr_t; -typedef char * __kernel_caddr_t; -typedef unsigned short __kernel_uid16_t; -typedef unsigned short __kernel_gid16_t; +#define __kernel_gid_t __kernel_gid_t + typedef unsigned int __kernel_uid32_t; +#define __kernel_uid32_t __kernel_uid32_t + typedef unsigned int __kernel_gid32_t; +#define __kernel_gid32_t __kernel_gid32_t typedef unsigned short __kernel_old_uid_t; +#define __kernel_old_uid_t __kernel_old_uid_t + typedef unsigned short __kernel_old_gid_t; +#define __kernel_old_gid_t __kernel_old_gid_t + typedef unsigned short __kernel_old_dev_t; +#define __kernel_old_dev_t __kernel_old_dev_t + +/* generic contents from here */ + +#include <asm/bitsperlong.h> +/* + * This file is generally used by user-level software, so you need to + * be a little careful about namespace pollution etc. + * + * First the types that are often defined in different ways across + * architectures, so that you can override them. + */ + +#ifndef __kernel_ino_t +typedef unsigned long __kernel_ino_t; +#endif + +#ifndef __kernel_mode_t +typedef unsigned int __kernel_mode_t; +#endif + +#ifndef __kernel_nlink_t +typedef unsigned long __kernel_nlink_t; +#endif + +#ifndef __kernel_pid_t +typedef int __kernel_pid_t; +#endif + +#ifndef __kernel_ipc_pid_t +typedef int __kernel_ipc_pid_t; +#endif + +#ifndef __kernel_uid_t +typedef unsigned int __kernel_uid_t; +typedef unsigned int __kernel_gid_t; +#endif + +#ifndef __kernel_suseconds_t +typedef long __kernel_suseconds_t; +#endif + +#ifndef __kernel_daddr_t +typedef int __kernel_daddr_t; +#endif -#ifdef __GNUC__ -typedef long long __kernel_loff_t; +#ifndef __kernel_uid32_t +typedef __kernel_uid_t __kernel_uid32_t; +typedef __kernel_gid_t __kernel_gid32_t; #endif +#ifndef __kernel_old_uid_t +typedef __kernel_uid_t __kernel_old_uid_t; +typedef __kernel_gid_t __kernel_old_gid_t; +#endif + +#ifndef __kernel_old_dev_t +typedef unsigned int __kernel_old_dev_t; +#endif + +/* + * Most 32 bit architectures use "unsigned int" size_t, + * and all 64 bit architectures use "unsigned long" size_t. + */ +#ifndef __kernel_size_t +#if __BITS_PER_LONG != 64 +typedef unsigned int __kernel_size_t; +typedef int __kernel_ssize_t; +typedef int __kernel_ptrdiff_t; +#else +typedef unsigned long __kernel_size_t; +typedef long __kernel_ssize_t; +typedef long __kernel_ptrdiff_t; +#endif +#endif + +/* + * anything below here should be completely generic + */ +typedef long __kernel_off_t; +typedef long long __kernel_loff_t; +typedef long __kernel_time_t; +typedef long __kernel_clock_t; +typedef int __kernel_timer_t; +typedef int __kernel_clockid_t; +typedef char * __kernel_caddr_t; +typedef unsigned short __kernel_uid16_t; +typedef unsigned short __kernel_gid16_t; + typedef struct { int val[2]; } __kernel_fsid_t; -#if defined(__KERNEL__) +#ifdef __KERNEL__ -#undef __FD_SET -#define __FD_SET(fd, fdsetp) \ - (((fd_set *)(fdsetp))->fds_bits[(fd) >> 5] |= (1<<((fd) & 31))) +#undef __FD_SET +static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp) +{ + unsigned long __tmp = __fd / __NFDBITS; + unsigned long __rem = __fd % __NFDBITS; + __fdsetp->fds_bits[__tmp] |= (1UL<<__rem); +} -#undef __FD_CLR -#define __FD_CLR(fd, fdsetp) \ - (((fd_set *)(fdsetp))->fds_bits[(fd) >> 5] &= ~(1<<((fd) & 31))) +#undef __FD_CLR +static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp) +{ + unsigned long __tmp = __fd / __NFDBITS; + unsigned long __rem = __fd % __NFDBITS; + __fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem); +} -#undef __FD_ISSET -#define __FD_ISSET(fd, fdsetp) \ - ((((fd_set *)(fdsetp))->fds_bits[(fd) >> 5] & (1<<((fd) & 31))) != 0) +#undef __FD_ISSET +static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p) +{ + unsigned long __tmp = __fd / __NFDBITS; + unsigned long __rem = __fd % __NFDBITS; + return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0; +} -#undef __FD_ZERO -#define __FD_ZERO(fdsetp) \ - (memset (fdsetp, 0, sizeof (*(fd_set *)(fdsetp)))) +/* + * This will unroll the loop for the normal constant case (8 ints, + * for a 256-bit fd_set) + */ +#undef __FD_ZERO +static inline void __FD_ZERO(__kernel_fd_set *__p) +{ + unsigned long *__tmp = __p->fds_bits; + int __i; -#endif + if (__builtin_constant_p(__FDSET_LONGS)) { + switch (__FDSET_LONGS) { + case 16: + __tmp[ 0] = 0; __tmp[ 1] = 0; + __tmp[ 2] = 0; __tmp[ 3] = 0; + __tmp[ 4] = 0; __tmp[ 5] = 0; + __tmp[ 6] = 0; __tmp[ 7] = 0; + __tmp[ 8] = 0; __tmp[ 9] = 0; + __tmp[10] = 0; __tmp[11] = 0; + __tmp[12] = 0; __tmp[13] = 0; + __tmp[14] = 0; __tmp[15] = 0; + return; + + case 8: + __tmp[ 0] = 0; __tmp[ 1] = 0; + __tmp[ 2] = 0; __tmp[ 3] = 0; + __tmp[ 4] = 0; __tmp[ 5] = 0; + __tmp[ 6] = 0; __tmp[ 7] = 0; + return; + + case 4: + __tmp[ 0] = 0; __tmp[ 1] = 0; + __tmp[ 2] = 0; __tmp[ 3] = 0; + return; + } + } + __i = __FDSET_LONGS; + while (__i) { + __i--; + *__tmp = 0; + __tmp++; + } +} + +#endif /* __KERNEL__ */ #endif -- 1.7.1
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