http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/kdev_t.h

#ifndef _LINUX_KDEV_T_H #define _LINUX_KDEV_T_H #ifdef __KERNEL__ #define MINORBITS 20 #define MINORMASK ((1U << MINORBITS) - 1) #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) #define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi)) #define print_dev_t(buffer, dev) \ sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev)) #define format_dev_t(buffer, dev) \ ({ \ sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev)); \ buffer; \ }) /* acceptable for old filesystems */ static inline int old_valid_dev(dev_t dev) { return MAJOR(dev) < 256 && MINOR(dev) < 256; } static inline u16 old_encode_dev(dev_t dev) { return (MAJOR(dev) << 8) | MINOR(dev); } static inline dev_t old_decode_dev(u16 val) { return MKDEV((val >> 8) & 255, val & 255); } static inline int new_valid_dev(dev_t dev) { return 1; } static inline u32 new_encode_dev(dev_t dev) { unsigned major = MAJOR(dev); unsigned minor = MINOR(dev); return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); } static inline dev_t new_decode_dev(u32 dev) { unsigned major = (dev & 0xfff00) >> 8; unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00); return MKDEV(major, minor); } static inline int huge_valid_dev(dev_t dev) { return 1; } static inline u64 huge_encode_dev(dev_t dev) { return new_encode_dev(dev); } static inline dev_t huge_decode_dev(u64 dev) { return new_decode_dev(dev); } static inline int sysv_valid_dev(dev_t dev) { return MAJOR(dev) < (1<<14) && MINOR(dev) < (1<<18); } static inline u32 sysv_encode_dev(dev_t dev) { return MINOR(dev) | (MAJOR(dev) << 18); } static inline unsigned sysv_major(u32 dev) { return (dev >> 18) & 0x3fff; } static inline unsigned sysv_minor(u32 dev) { return dev & 0x3ffff; } #else /* __KERNEL__ */ /* Some programs want their definitions of MAJOR and MINOR and MKDEV from the kernel sources. These must be the externally visible ones. */ #define MAJOR(dev) ((dev)>>8) #define MINOR(dev) ((dev) & 0xff) #define MKDEV(ma,mi) ((ma)<<8 | (mi)) #endif /* __KERNEL__ */ #endif