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6ece595532
To prevent segmentation faults when the function dfi_mem_phys_read() is given invalid parameters, check that the given memory range falls within a known physical memory chunk, just like it is done for dfi_mem_virt_read(). Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
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* Copyright IBM Corp. 2001, 2018
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef DFI_MEM_CHUNK_H
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#define DFI_MEM_CHUNK_H
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#include <stdbool.h>
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#include "lib/zt_common.h"
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#include "lib/util_list.h"
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/*
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* Mem chunk functions and definitions
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*/
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struct dfi_mem_chunk;
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typedef void (*dfi_mem_chunk_read_fn)(struct dfi_mem_chunk *mem_chunk,
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u64 off, void *buf, u64 cnt);
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typedef void (*dfi_mem_chunk_free_fn)(void *data);
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struct dfi_mem_chunk {
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struct util_list_node list; /* List */
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u64 start; /* Start address in memory */
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u64 end; /* End address in memory */
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u64 size; /* Size of chunk in dump file */
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dfi_mem_chunk_read_fn read_fn; /* Chunk read callback */
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dfi_mem_chunk_free_fn free_fn; /* Free data callback */
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void *data; /* Data for callback */
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u32 volnr; /* Volume id where chunk resides */
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};
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void dfi_mem_chunk_read_zero(struct dfi_mem_chunk *UNUSED(mem_chunk),
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u64 UNUSED(off), void *buf, u64 cnt);
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void dfi_mem_chunk_add_vol(u64 start, u64 size, void *data,
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dfi_mem_chunk_read_fn read_fn,
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dfi_mem_chunk_free_fn free_fn,
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u32 volnr);
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void dfi_mem_chunk_add(u64 start, u64 size, void *data,
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dfi_mem_chunk_read_fn read_fn,
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dfi_mem_chunk_free_fn free_fn);
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u64 dfi_mem_range(void);
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int dfi_mem_range_valid(u64 addr, u64 len);
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unsigned int dfi_mem_chunk_cnt(void);
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struct dfi_mem_chunk *dfi_mem_chunk_first(void);
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struct dfi_mem_chunk *dfi_mem_chunk_last(void);
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struct dfi_mem_chunk *dfi_mem_chunk_next(struct dfi_mem_chunk *chunk);
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struct dfi_mem_chunk *dfi_mem_chunk_prev(struct dfi_mem_chunk *chunk);
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struct dfi_mem_chunk *dfi_mem_chunk_find(u64 addr);
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struct util_list *dfi_mem_chunk_list(void);
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#define dfi_mem_chunk_iterate(mem_chunk) \
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util_list_iterate(dfi_mem_chunk_list(), mem_chunk)
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int dfi_mem_virt_read(u64 addr, void *buf, size_t cnt);
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int dfi_mem_phys_read(u64 addr, void *buf, size_t cnt);
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void dfi_mem_map_print(bool verbose);
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void dfi_mem_unmap(u64 start, u64 size);
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void dfi_mem_map(u64 start, u64 size, u64 start_phys);
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int dfi_mem_chunk_init(void);
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void dfi_mem_chunk_deinit(void);
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#endif /* DFI_MEM_CHUNK_H */
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