| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_BUILDID_H |
| 3 | #define _LINUX_BUILDID_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | |
| 7 | #define BUILD_ID_SIZE_MAX 20 |
| 8 | |
| 9 | struct vm_area_struct; |
| 10 | struct file; |
| 11 | |
| 12 | int build_id_parse(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size); |
| 13 | int build_id_parse_file(struct file *file, unsigned char *build_id, __u32 *size); |
| 14 | int build_id_parse_nofault(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size); |
| 15 | int build_id_parse_buf(const void *buf, unsigned char *build_id, u32 buf_size); |
| 16 | |
| 17 | #if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) || IS_ENABLED(CONFIG_VMCORE_INFO) |
| 18 | extern unsigned char vmlinux_build_id[BUILD_ID_SIZE_MAX]; |
| 19 | void init_vmlinux_build_id(void); |
| 20 | #else |
| 21 | static inline void init_vmlinux_build_id(void) { } |
| 22 | #endif |
| 23 | |
| 24 | struct freader { |
| 25 | void *buf; |
| 26 | u32 buf_sz; |
| 27 | int err; |
| 28 | union { |
| 29 | struct { |
| 30 | struct file *file; |
| 31 | struct folio *folio; |
| 32 | void *addr; |
| 33 | loff_t folio_off; |
| 34 | bool may_fault; |
| 35 | }; |
| 36 | struct { |
| 37 | const char *data; |
| 38 | u64 data_sz; |
| 39 | }; |
| 40 | }; |
| 41 | }; |
| 42 | |
| 43 | void freader_init_from_file(struct freader *r, void *buf, u32 buf_sz, |
| 44 | struct file *file, bool may_fault); |
| 45 | void freader_init_from_mem(struct freader *r, const char *data, u64 data_sz); |
| 46 | const void *freader_fetch(struct freader *r, loff_t file_off, size_t sz); |
| 47 | void freader_cleanup(struct freader *r); |
| 48 | |
| 49 | #endif |
| 50 | |