forked from Minki/linux
bb222ceeb3
There are two callers of file_lookup(), but there is no more reason
to expand the given path.
[1] zconf_initscan()
This is used to open the first Kconfig. sym_expand_string_value()
has never been used in a useful way here; before opening the first
Kconfig file, obviously there is no symbol to expand. If you use
expand_string_value() instead, environments in KBUILD_KCONFIG would
be expanded, but I do not see practical benefits for that.
[2] zconf_nextfile()
This is used to open the next file from 'source' statement.
Symbols in the path like "arch/$SRCARCH/Kconfig" needed expanding,
but it was replaced with the direct environment expansion. The
environment has already been expanded before the token is passed
to the parser.
By the way, file_lookup() was already buggy; it expanded a given path,
but it used the path before expansion for look-up:
if (!strcmp(name, file->name)) {
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
161 lines
2.8 KiB
C
161 lines
2.8 KiB
C
/*
|
|
* Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
|
|
* Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
|
|
*
|
|
* Released under the terms of the GNU GPL v2.0.
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "lkc.h"
|
|
|
|
/* file already present in list? If not add it */
|
|
struct file *file_lookup(const char *name)
|
|
{
|
|
struct file *file;
|
|
|
|
for (file = file_list; file; file = file->next) {
|
|
if (!strcmp(name, file->name)) {
|
|
return file;
|
|
}
|
|
}
|
|
|
|
file = xmalloc(sizeof(*file));
|
|
memset(file, 0, sizeof(*file));
|
|
file->name = xstrdup(name);
|
|
file->next = file_list;
|
|
file_list = file;
|
|
return file;
|
|
}
|
|
|
|
/* write a dependency file as used by kbuild to track dependencies */
|
|
int file_write_dep(const char *name)
|
|
{
|
|
struct file *file;
|
|
FILE *out;
|
|
|
|
if (!name)
|
|
name = ".kconfig.d";
|
|
out = fopen("..config.tmp", "w");
|
|
if (!out)
|
|
return 1;
|
|
fprintf(out, "deps_config := \\\n");
|
|
for (file = file_list; file; file = file->next) {
|
|
if (file->next)
|
|
fprintf(out, "\t%s \\\n", file->name);
|
|
else
|
|
fprintf(out, "\t%s\n", file->name);
|
|
}
|
|
fprintf(out, "\n%s: \\\n"
|
|
"\t$(deps_config)\n\n", conf_get_autoconfig_name());
|
|
|
|
env_write_dep(out, conf_get_autoconfig_name());
|
|
|
|
fprintf(out, "\n$(deps_config): ;\n");
|
|
fclose(out);
|
|
rename("..config.tmp", name);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Allocate initial growable string */
|
|
struct gstr str_new(void)
|
|
{
|
|
struct gstr gs;
|
|
gs.s = xmalloc(sizeof(char) * 64);
|
|
gs.len = 64;
|
|
gs.max_width = 0;
|
|
strcpy(gs.s, "\0");
|
|
return gs;
|
|
}
|
|
|
|
/* Free storage for growable string */
|
|
void str_free(struct gstr *gs)
|
|
{
|
|
if (gs->s)
|
|
free(gs->s);
|
|
gs->s = NULL;
|
|
gs->len = 0;
|
|
}
|
|
|
|
/* Append to growable string */
|
|
void str_append(struct gstr *gs, const char *s)
|
|
{
|
|
size_t l;
|
|
if (s) {
|
|
l = strlen(gs->s) + strlen(s) + 1;
|
|
if (l > gs->len) {
|
|
gs->s = xrealloc(gs->s, l);
|
|
gs->len = l;
|
|
}
|
|
strcat(gs->s, s);
|
|
}
|
|
}
|
|
|
|
/* Append printf formatted string to growable string */
|
|
void str_printf(struct gstr *gs, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
char s[10000]; /* big enough... */
|
|
va_start(ap, fmt);
|
|
vsnprintf(s, sizeof(s), fmt, ap);
|
|
str_append(gs, s);
|
|
va_end(ap);
|
|
}
|
|
|
|
/* Retrieve value of growable string */
|
|
const char *str_get(struct gstr *gs)
|
|
{
|
|
return gs->s;
|
|
}
|
|
|
|
void *xmalloc(size_t size)
|
|
{
|
|
void *p = malloc(size);
|
|
if (p)
|
|
return p;
|
|
fprintf(stderr, "Out of memory.\n");
|
|
exit(1);
|
|
}
|
|
|
|
void *xcalloc(size_t nmemb, size_t size)
|
|
{
|
|
void *p = calloc(nmemb, size);
|
|
if (p)
|
|
return p;
|
|
fprintf(stderr, "Out of memory.\n");
|
|
exit(1);
|
|
}
|
|
|
|
void *xrealloc(void *p, size_t size)
|
|
{
|
|
p = realloc(p, size);
|
|
if (p)
|
|
return p;
|
|
fprintf(stderr, "Out of memory.\n");
|
|
exit(1);
|
|
}
|
|
|
|
char *xstrdup(const char *s)
|
|
{
|
|
char *p;
|
|
|
|
p = strdup(s);
|
|
if (p)
|
|
return p;
|
|
fprintf(stderr, "Out of memory.\n");
|
|
exit(1);
|
|
}
|
|
|
|
char *xstrndup(const char *s, size_t n)
|
|
{
|
|
char *p;
|
|
|
|
p = strndup(s, n);
|
|
if (p)
|
|
return p;
|
|
fprintf(stderr, "Out of memory.\n");
|
|
exit(1);
|
|
}
|