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kpatch/kpatch-build/lookup.h

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merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
#ifndef _LOOKUP_H_
#define _LOOKUP_H_
lookup: convert lookup functions to return bool IMO, the code is easier to follow if these functions return bool. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2019-11-01 19:59:05 +00:00
#include <stdbool.h>
merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
struct lookup_table;
struct lookup_result {
lookup: add 'objname' to lookup table and lookup results This will be needed for the upcoming dynrela refactoring. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2019-11-01 20:03:14 +00:00
char *objname;
lookup: rename 'value' -> 'addr' Rename 'value' to 'addr' to more accurately describe it. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2018-04-18 18:39:56 +00:00
unsigned long addr;
merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
unsigned long size;
lookup: rename 'pos' to 'sympos' To more accurately describe its purpose. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2018-04-18 18:41:24 +00:00
unsigned long sympos;
create-diff-object: refactor dynrela conversion The dynrela (aka .klp.rela) conversion logic is notoriously complex and fragile. Simplify it and improve the comments. This is mainly a cosmetic change. In theory it shouldn't change functionality or break anything. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2018-03-22 20:22:10 +00:00
bool global, exported;
merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
};
support dup file+symbol We use kelf_base->symbols to find a unique matching FILE+locals combination when we call lookup_open(). If we can't find one matching or we find more than one matching, we error out. If we find a unique one, we setup table->local_syms in lookup_open(), so later lookup_local_symbol() could do its lookup based on table->local_syms. Fixes #604. Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Zhou Chengming <zhouchengming1@huawei.com>
2017-02-04 01:31:25 +00:00
struct sym_compare_type {
char *name;
int type;
};
lookup: add 'objname' to lookup table and lookup results This will be needed for the upcoming dynrela refactoring. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2019-11-01 20:03:14 +00:00
struct lookup_table *lookup_open(char *symtab_path, char *objname,
char *symvers_path, char *hint,
struct sym_compare_type *locals);
merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
void lookup_close(struct lookup_table *table);
create-diff-object: refactor dynrela conversion The dynrela (aka .klp.rela) conversion logic is notoriously complex and fragile. Simplify it and improve the comments. This is mainly a cosmetic change. In theory it shouldn't change functionality or break anything. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
2018-03-22 20:22:10 +00:00
bool lookup_symbol(struct lookup_table *table, char *name,
struct lookup_result *result);
merge add-patches-section functionality into create-obj-diff In preparation for dynamic symbol linking, the symbol lookup logic is going to move into create-diff-obj anyway. We might as well minimize the code duplication and pull this into create-diff-obj. This avoids having to re-parse the ELF file modify it in-place. Signed-off-by: Seth Jennings <sjenning@redhat.com> Conflicts: kpatch-build/kpatch-build
2014-05-14 20:43:58 +00:00
#endif /* _LOOKUP_H_ */