mirror of
https://github.com/adulau/aha.git
synced 2024-12-28 03:36:19 +00:00
64e6c1e123
Sometimes it is preferable to avoid changes of exported symbol checksums (to avoid breaking externally provided modules). When a checksum change occurs, it can be hard to figure out what caused this change: underlying types may have changed, or additional type information may simply have become available at the point where a symbol is exported. Add a new --reference option to genksyms which allows it to report why checksums change, based on the type information dumps it creates with the --dump-types flag. Genksyms will read in such a dump from a previous run, and report which symbols have changed (and why). The behavior can be controlled for an entire build as follows: If KBUILD_SYMTYPES is set, genksyms uses --dump-types to produce *.symtypes dump files. If any *.symref files exist, those will be used as the reference to check against. If KBUILD_PRESERVE is set, checksum changes will fail the build. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* Generate kernel symbol version hashes.
|
|
Copyright 1996, 1997 Linux International.
|
|
|
|
New implementation contributed by Richard Henderson <rth@tamu.edu>
|
|
Based on original work by Bjorn Ekwall <bj0rn@blox.se>
|
|
|
|
This file is part of the Linux modutils.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation; either version 2 of the License, or (at your
|
|
option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software Foundation,
|
|
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef MODUTILS_GENKSYMS_H
|
|
#define MODUTILS_GENKSYMS_H 1
|
|
|
|
#include <stdio.h>
|
|
|
|
enum symbol_type {
|
|
SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION
|
|
};
|
|
|
|
enum symbol_status {
|
|
STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
|
|
};
|
|
|
|
struct string_list {
|
|
struct string_list *next;
|
|
enum symbol_type tag;
|
|
char *string;
|
|
};
|
|
|
|
struct symbol {
|
|
struct symbol *hash_next;
|
|
const char *name;
|
|
enum symbol_type type;
|
|
struct string_list *defn;
|
|
struct symbol *expansion_trail;
|
|
struct symbol *visited;
|
|
int is_extern;
|
|
int is_declared;
|
|
enum symbol_status status;
|
|
};
|
|
|
|
typedef struct string_list **yystype;
|
|
#define YYSTYPE yystype
|
|
|
|
extern int cur_line;
|
|
extern char *cur_filename;
|
|
|
|
struct symbol *find_symbol(const char *name, enum symbol_type ns);
|
|
struct symbol *add_symbol(const char *name, enum symbol_type type,
|
|
struct string_list *defn, int is_extern);
|
|
void export_symbol(const char *);
|
|
|
|
void free_node(struct string_list *list);
|
|
void free_list(struct string_list *s, struct string_list *e);
|
|
struct string_list *copy_node(struct string_list *);
|
|
|
|
int yylex(void);
|
|
int yyparse(void);
|
|
|
|
void error_with_pos(const char *, ...);
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
#define xmalloc(size) ({ void *__ptr = malloc(size); \
|
|
if(!__ptr && size != 0) { \
|
|
fprintf(stderr, "out of memory\n"); \
|
|
exit(1); \
|
|
} \
|
|
__ptr; })
|
|
#define xstrdup(str) ({ char *__str = strdup(str); \
|
|
if (!__str) { \
|
|
fprintf(stderr, "out of memory\n"); \
|
|
exit(1); \
|
|
} \
|
|
__str; })
|
|
|
|
#endif /* genksyms.h */
|