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29 #ifndef PT_SECTION_POSIX_H
30 #define PT_SECTION_POSIX_H
38 /* Fstat-based file status. */
39 struct pt_sec_posix_status {
40 /* The file status. */
44 /* MMAP-based section mapping information. */
45 struct pt_sec_posix_mapping {
46 /* The mmap base address. */
49 /* The mapped memory size. */
52 /* The begin and end of the mapped memory. */
53 const uint8_t *begin, *end;
59 * On success, sets @section's mapping, unmap, and read pointers.
61 * Returns zero on success, a negative error code otherwise.
62 * Returns -pte_internal if @section or @file are NULL.
63 * Returns -pte_invalid if @section can't be mapped.
65 extern int pt_sec_posix_map(struct pt_section *section, int fd);
69 * On success, clears @section's mapping, unmap, and read pointers.
71 * Returns zero on success, a negative error code otherwise.
72 * Returns -pte_internal if @section is NULL.
73 * Returns -pte_internal if @section has not been mapped.
75 extern int pt_sec_posix_unmap(struct pt_section *section);
77 /* Read memory from an mmaped section.
79 * Reads at most @size bytes from @section at @offset into @buffer.
81 * Returns the number of bytes read on success, a negative error code otherwise.
82 * Returns -pte_invalid if @section or @buffer are NULL.
83 * Returns -pte_nomap if @offset is beyond the end of the section.
85 extern int pt_sec_posix_read(const struct pt_section *section, uint8_t *buffer,
86 uint16_t size, uint64_t offset);
88 /* Compute the memory size of a section.
90 * On success, provides the amount of memory used for mapping @section in bytes
93 * Returns zero on success, a negative error code otherwise.
94 * Returns -pte_internal if @section or @size is NULL.
95 * Returns -pte_internal if @section has not been mapped.
97 extern int pt_sec_posix_memsize(const struct pt_section *section,
100 #endif /* PT_SECTION_POSIX_H */