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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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76e4fed847
Move struct freader and prototypes of the functions operating on it into the buildid.h. This allows reusing freader outside buildid, e.g. for file dynptr support added later. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Link: https://lore.kernel.org/r/20251026203853.135105-4-mykyta.yatsenko5@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_BUILDID_H
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#define _LINUX_BUILDID_H
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#include <linux/types.h>
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#define BUILD_ID_SIZE_MAX 20
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struct vm_area_struct;
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int build_id_parse(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size);
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int build_id_parse_nofault(struct vm_area_struct *vma, unsigned char *build_id, __u32 *size);
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int build_id_parse_buf(const void *buf, unsigned char *build_id, u32 buf_size);
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#if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) || IS_ENABLED(CONFIG_VMCORE_INFO)
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extern unsigned char vmlinux_build_id[BUILD_ID_SIZE_MAX];
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void init_vmlinux_build_id(void);
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#else
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static inline void init_vmlinux_build_id(void) { }
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#endif
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struct freader {
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void *buf;
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u32 buf_sz;
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int err;
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union {
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struct {
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struct file *file;
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struct folio *folio;
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void *addr;
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loff_t folio_off;
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bool may_fault;
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};
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struct {
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const char *data;
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u64 data_sz;
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};
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};
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};
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void freader_init_from_file(struct freader *r, void *buf, u32 buf_sz,
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struct file *file, bool may_fault);
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void freader_init_from_mem(struct freader *r, const char *data, u64 data_sz);
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const void *freader_fetch(struct freader *r, loff_t file_off, size_t sz);
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void freader_cleanup(struct freader *r);
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#endif
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