forked from Qortal/Brooklyn
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.
112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
#ifndef _LINUX_MMIOTRACE_H
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#define _LINUX_MMIOTRACE_H
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#include <linux/types.h>
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#include <linux/list.h>
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struct kmmio_probe;
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struct pt_regs;
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typedef void (*kmmio_pre_handler_t)(struct kmmio_probe *,
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struct pt_regs *, unsigned long addr);
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typedef void (*kmmio_post_handler_t)(struct kmmio_probe *,
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unsigned long condition, struct pt_regs *);
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struct kmmio_probe {
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/* kmmio internal list: */
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struct list_head list;
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/* start location of the probe point: */
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unsigned long addr;
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/* length of the probe region: */
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unsigned long len;
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/* Called before addr is executed: */
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kmmio_pre_handler_t pre_handler;
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/* Called after addr is executed: */
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kmmio_post_handler_t post_handler;
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void *private;
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};
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extern unsigned int kmmio_count;
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extern int register_kmmio_probe(struct kmmio_probe *p);
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extern void unregister_kmmio_probe(struct kmmio_probe *p);
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extern int kmmio_init(void);
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extern void kmmio_cleanup(void);
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#ifdef CONFIG_MMIOTRACE
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/* kmmio is active by some kmmio_probes? */
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static inline int is_kmmio_active(void)
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{
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return kmmio_count;
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}
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/* Called from page fault handler. */
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extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
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/* Called from ioremap.c */
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extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
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void __iomem *addr);
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extern void mmiotrace_iounmap(const volatile void __iomem *addr);
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/* For anyone to insert markers. Remember trailing newline. */
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extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...);
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#else /* !CONFIG_MMIOTRACE: */
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static inline int is_kmmio_active(void)
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{
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return 0;
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}
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static inline int kmmio_handler(struct pt_regs *regs, unsigned long addr)
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{
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return 0;
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}
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static inline void mmiotrace_ioremap(resource_size_t offset,
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unsigned long size, void __iomem *addr)
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{
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}
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static inline void mmiotrace_iounmap(const volatile void __iomem *addr)
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{
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}
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static inline __printf(1, 2) int mmiotrace_printk(const char *fmt, ...)
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{
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return 0;
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}
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#endif /* CONFIG_MMIOTRACE */
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enum mm_io_opcode {
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MMIO_READ = 0x1, /* struct mmiotrace_rw */
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MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
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MMIO_PROBE = 0x3, /* struct mmiotrace_map */
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MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
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MMIO_UNKNOWN_OP = 0x5, /* struct mmiotrace_rw */
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};
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struct mmiotrace_rw {
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resource_size_t phys; /* PCI address of register */
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unsigned long value;
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unsigned long pc; /* optional program counter */
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int map_id;
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unsigned char opcode; /* one of MMIO_{READ,WRITE,UNKNOWN_OP} */
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unsigned char width; /* size of register access in bytes */
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};
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struct mmiotrace_map {
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resource_size_t phys; /* base address in PCI space */
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unsigned long virt; /* base virtual address */
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unsigned long len; /* mapping size */
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int map_id;
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unsigned char opcode; /* MMIO_PROBE or MMIO_UNPROBE */
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};
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/* in kernel/trace/trace_mmiotrace.c */
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extern void enable_mmiotrace(void);
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extern void disable_mmiotrace(void);
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extern void mmio_trace_rw(struct mmiotrace_rw *rw);
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extern void mmio_trace_mapping(struct mmiotrace_map *map);
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extern __printf(1, 0) int mmio_trace_printk(const char *fmt, va_list args);
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#endif /* _LINUX_MMIOTRACE_H */
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