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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_BUILDID_H
#define _LINUX_BUILDID_H
#include <linux/types.h>
#define BUILD_ID_SIZE_MAX 20
struct vm_area_struct;
int build_id_parse(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size);
int build_id_parse_nofault(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size);
int build_id_parse_buf(const void *buf, unsigned char *build_id, u32 buf_size);
#if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) || IS_ENABLED(CONFIG_VMCORE_INFO)
extern unsigned char vmlinux_build_id[BUILD_ID_SIZE_MAX];
void init_vmlinux_build_id(void);
#else
static inline void init_vmlinux_build_id(void) { }
#endif
struct freader {
void *buf;
u32 buf_sz;
int err;
union {
struct {
struct file *file;
struct folio *folio;
void *addr;
loff_t folio_off;
bool may_fault;
};
struct {
const char *data;
u64 data_sz;
};
};
};
void freader_init_from_file(struct freader *r, void *buf, u32 buf_sz,
struct file *file, bool may_fault);
void freader_init_from_mem(struct freader *r, const char *data, u64 data_sz);
const void *freader_fetch(struct freader *r, loff_t file_off, size_t sz);
void freader_cleanup(struct freader *r);
#endif
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