mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 18:13:04 +00:00
37ae2d5998
Reinhard Tartler discovered a corner case of calling xfwrite() where the
length of the string is zero.
Arnaud Lacombe suggested to use assertion for the corner case, as
fwrite(3) is currently used:
1) in comment printers. Empty comment are not allowed.
2) in a callback passed to expr_print(), where the string printed is
either NULL OR non-empty.
3) in the lexer, auto-generated, and unused.
I feel using assertion is a good solution:
1) It cleanly takes care of the above-mentioned corner case.
2) It can be easily disabled by defining NDEBUG.
3) It asserts xfwrite() is simply a wrapper for fwrite().
Reported-by: Reinhard Tartler <Reinhard.Tartler@informatik.uni-erlangen.de>
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
191 lines
4.6 KiB
C
191 lines
4.6 KiB
C
/*
|
|
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
|
|
* Released under the terms of the GNU GPL v2.0.
|
|
*/
|
|
|
|
#ifndef LKC_H
|
|
#define LKC_H
|
|
|
|
#include "expr.h"
|
|
|
|
#ifndef KBUILD_NO_NLS
|
|
# include <libintl.h>
|
|
#else
|
|
static inline const char *gettext(const char *txt) { return txt; }
|
|
static inline void textdomain(const char *domainname) {}
|
|
static inline void bindtextdomain(const char *name, const char *dir) {}
|
|
static inline char *bind_textdomain_codeset(const char *dn, char *c) { return c; }
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define P(name,type,arg) extern type name arg
|
|
#include "lkc_proto.h"
|
|
#undef P
|
|
|
|
#define SRCTREE "srctree"
|
|
|
|
#ifndef PACKAGE
|
|
#define PACKAGE "linux"
|
|
#endif
|
|
|
|
#define LOCALEDIR "/usr/share/locale"
|
|
|
|
#define _(text) gettext(text)
|
|
#define N_(text) (text)
|
|
|
|
#ifndef CONFIG_
|
|
#define CONFIG_ "CONFIG_"
|
|
#endif
|
|
|
|
#define TF_COMMAND 0x0001
|
|
#define TF_PARAM 0x0002
|
|
#define TF_OPTION 0x0004
|
|
|
|
enum conf_def_mode {
|
|
def_default,
|
|
def_yes,
|
|
def_mod,
|
|
def_no,
|
|
def_random
|
|
};
|
|
|
|
#define T_OPT_MODULES 1
|
|
#define T_OPT_DEFCONFIG_LIST 2
|
|
#define T_OPT_ENV 3
|
|
|
|
struct kconf_id {
|
|
int name;
|
|
int token;
|
|
unsigned int flags;
|
|
enum symbol_type stype;
|
|
};
|
|
|
|
extern int zconfdebug;
|
|
|
|
int zconfparse(void);
|
|
void zconfdump(FILE *out);
|
|
void zconf_starthelp(void);
|
|
FILE *zconf_fopen(const char *name);
|
|
void zconf_initscan(const char *name);
|
|
void zconf_nextfile(const char *name);
|
|
int zconf_lineno(void);
|
|
const char *zconf_curname(void);
|
|
|
|
/* confdata.c */
|
|
const char *conf_get_configname(void);
|
|
const char *conf_get_autoconfig_name(void);
|
|
char *conf_get_default_confname(void);
|
|
void sym_set_change_count(int count);
|
|
void sym_add_change_count(int count);
|
|
void conf_set_all_new_symbols(enum conf_def_mode mode);
|
|
|
|
struct conf_printer {
|
|
void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
|
|
void (*print_comment)(FILE *, const char *, void *);
|
|
};
|
|
|
|
/* confdata.c and expr.c */
|
|
static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
|
|
{
|
|
assert(len != 0);
|
|
|
|
if (fwrite(str, len, count, out) != count)
|
|
fprintf(stderr, "Error in writing or end of file.\n");
|
|
}
|
|
|
|
/* menu.c */
|
|
void _menu_init(void);
|
|
void menu_warn(struct menu *menu, const char *fmt, ...);
|
|
struct menu *menu_add_menu(void);
|
|
void menu_end_menu(void);
|
|
void menu_add_entry(struct symbol *sym);
|
|
void menu_end_entry(void);
|
|
void menu_add_dep(struct expr *dep);
|
|
void menu_add_visibility(struct expr *dep);
|
|
struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep);
|
|
struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
|
|
void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
|
|
void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
|
|
void menu_add_option(int token, char *arg);
|
|
void menu_finalize(struct menu *parent);
|
|
void menu_set_type(int type);
|
|
|
|
/* util.c */
|
|
struct file *file_lookup(const char *name);
|
|
int file_write_dep(const char *name);
|
|
|
|
struct gstr {
|
|
size_t len;
|
|
char *s;
|
|
/*
|
|
* when max_width is not zero long lines in string s (if any) get
|
|
* wrapped not to exceed the max_width value
|
|
*/
|
|
int max_width;
|
|
};
|
|
struct gstr str_new(void);
|
|
struct gstr str_assign(const char *s);
|
|
void str_free(struct gstr *gs);
|
|
void str_append(struct gstr *gs, const char *s);
|
|
void str_printf(struct gstr *gs, const char *fmt, ...);
|
|
const char *str_get(struct gstr *gs);
|
|
|
|
/* symbol.c */
|
|
extern struct expr *sym_env_list;
|
|
|
|
void sym_init(void);
|
|
void sym_clear_all_valid(void);
|
|
void sym_set_all_changed(void);
|
|
void sym_set_changed(struct symbol *sym);
|
|
struct symbol *sym_choice_default(struct symbol *sym);
|
|
const char *sym_get_string_default(struct symbol *sym);
|
|
struct symbol *sym_check_deps(struct symbol *sym);
|
|
struct property *prop_alloc(enum prop_type type, struct symbol *sym);
|
|
struct symbol *prop_get_symbol(struct property *prop);
|
|
struct property *sym_get_env_prop(struct symbol *sym);
|
|
|
|
static inline tristate sym_get_tristate_value(struct symbol *sym)
|
|
{
|
|
return sym->curr.tri;
|
|
}
|
|
|
|
|
|
static inline struct symbol *sym_get_choice_value(struct symbol *sym)
|
|
{
|
|
return (struct symbol *)sym->curr.val;
|
|
}
|
|
|
|
static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval)
|
|
{
|
|
return sym_set_tristate_value(chval, yes);
|
|
}
|
|
|
|
static inline bool sym_is_choice(struct symbol *sym)
|
|
{
|
|
return sym->flags & SYMBOL_CHOICE ? true : false;
|
|
}
|
|
|
|
static inline bool sym_is_choice_value(struct symbol *sym)
|
|
{
|
|
return sym->flags & SYMBOL_CHOICEVAL ? true : false;
|
|
}
|
|
|
|
static inline bool sym_is_optional(struct symbol *sym)
|
|
{
|
|
return sym->flags & SYMBOL_OPTIONAL ? true : false;
|
|
}
|
|
|
|
static inline bool sym_has_value(struct symbol *sym)
|
|
{
|
|
return sym->flags & SYMBOL_DEF_USER ? true : false;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LKC_H */
|