diff options
Diffstat (limited to 'mdk-stage1/dietlibc/include/linux/posix_types.h')
-rw-r--r-- | mdk-stage1/dietlibc/include/linux/posix_types.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/include/linux/posix_types.h b/mdk-stage1/dietlibc/include/linux/posix_types.h new file mode 100644 index 000000000..0d494a1f6 --- /dev/null +++ b/mdk-stage1/dietlibc/include/linux/posix_types.h @@ -0,0 +1,115 @@ +#ifndef _LINUX_POSIX_TYPES_H +#define _LINUX_POSIX_TYPES_H + +/* + * This allows for 1024 file descriptors: if NR_OPEN is ever grown + * beyond that you'll have to change this too. But 1024 fd's seem to be + * enough even for such "real" unices like OSF/1, so hopefully this is + * one limit that doesn't have to be changed [again]. + * + * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in + * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical + * place for them. Solved by having dummy defines in <sys/time.h>. + */ + +/* + * Those macros may have been defined in <gnu/types.h>. But we always + * use the ones here. + */ +#undef __NFDBITS +#define __NFDBITS (8 * sizeof(unsigned long)) + +#undef __FD_SETSIZE +#define __FD_SETSIZE 1024 + +#undef __FDSET_LONGS +#define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS) + +#undef __FDELT +#define __FDELT(d) ((d) / __NFDBITS) + +#undef __FDMASK +#define __FDMASK(d) (1UL << ((d) % __NFDBITS)) + +typedef struct { + unsigned long fds_bits [__FDSET_LONGS]; +} __kernel_fd_set; + +#ifndef __KERNEL_STRICT_NAMES +typedef __kernel_fd_set fd_set; +#endif + +#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) + +#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 +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 +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; +} + +/* + * This will unroll the loop for the normal constant cases (8 or 32 longs, + * for 256 and 1024-bit fd_sets respectively) + */ +#undef __FD_ZERO +static __inline__ void __FD_ZERO(__kernel_fd_set *p) +{ + unsigned long *tmp = p->fds_bits; + int i; + + if (__builtin_constant_p(__FDSET_LONGS)) { + switch (__FDSET_LONGS) { + case 32: + 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; + tmp[16] = 0; tmp[17] = 0; tmp[18] = 0; tmp[19] = 0; + tmp[20] = 0; tmp[21] = 0; tmp[22] = 0; tmp[23] = 0; + tmp[24] = 0; tmp[25] = 0; tmp[26] = 0; tmp[27] = 0; + tmp[28] = 0; tmp[29] = 0; tmp[30] = 0; tmp[31] = 0; + return; + 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 /* defined(__KERNEL__) */ + +#endif /* _LINUX_POSIX_TYPES_H */ |