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https://github.com/Qortal/Brooklyn.git
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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
#ifndef _LINUX_KDEV_T_H
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#define _LINUX_KDEV_T_H
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#include <uapi/linux/kdev_t.h>
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#define MINORBITS 20
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#define MINORMASK ((1U << MINORBITS) - 1)
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#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
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#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi))
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#define print_dev_t(buffer, dev) \
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sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev))
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#define format_dev_t(buffer, dev) \
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({ \
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sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev)); \
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buffer; \
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})
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/* acceptable for old filesystems */
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static inline bool old_valid_dev(dev_t dev)
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{
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return MAJOR(dev) < 256 && MINOR(dev) < 256;
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}
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static inline u16 old_encode_dev(dev_t dev)
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{
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return (MAJOR(dev) << 8) | MINOR(dev);
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}
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static inline dev_t old_decode_dev(u16 val)
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{
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return MKDEV((val >> 8) & 255, val & 255);
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}
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static inline u32 new_encode_dev(dev_t dev)
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{
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unsigned major = MAJOR(dev);
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unsigned minor = MINOR(dev);
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return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
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}
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static inline dev_t new_decode_dev(u32 dev)
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{
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unsigned major = (dev & 0xfff00) >> 8;
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unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
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return MKDEV(major, minor);
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}
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static inline u64 huge_encode_dev(dev_t dev)
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{
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return new_encode_dev(dev);
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}
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static inline dev_t huge_decode_dev(u64 dev)
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{
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return new_decode_dev(dev);
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}
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static inline int sysv_valid_dev(dev_t dev)
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{
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return MAJOR(dev) < (1<<14) && MINOR(dev) < (1<<18);
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}
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static inline u32 sysv_encode_dev(dev_t dev)
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{
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return MINOR(dev) | (MAJOR(dev) << 18);
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}
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static inline unsigned sysv_major(u32 dev)
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{
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return (dev >> 18) & 0x3fff;
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}
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static inline unsigned sysv_minor(u32 dev)
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{
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return dev & 0x3ffff;
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}
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#endif
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