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kconfig: split out code touching a file to conf_touch_dep()

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conf_touch_deps() iterates over symbols, touching corresponding
include/config/*.h files as needed.

Split the part that touches a single file into a new helper so it can
be reused.

The new helper, conf_touch_dep(), takes a symbol name as a parameter,
and touches the corresponding include/config/*.h file.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2018-11-30 18:15:50 +09:00
parent 0849d212e3
commit 1508fec82e
1 changed files with 49 additions and 43 deletions
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92
scripts/kconfig/confdata.c
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@ -74,6 +74,47 @@ static int make_parent_dir(const char *path)
return 0;
}
static char depfile_path[PATH_MAX];
static size_t depfile_prefix_len;
/* touch depfile for symbol 'name' */
static int conf_touch_dep(const char *name)
{
int fd, ret;
const char *s;
char *d, c;
/* check overflow: prefix + name + ".h" + '\0' must fit in buffer. */
if (depfile_prefix_len + strlen(name) + 3 > sizeof(depfile_path))
return -1;
d = depfile_path + depfile_prefix_len;
s = name;
while ((c = *s++))
*d++ = (c == '_') ? '/' : tolower(c);
strcpy(d, ".h");
/* Assume directory path already exists. */
fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
if (errno != ENOENT)
return -1;
ret = make_parent_dir(depfile_path);
if (ret)
return ret;
/* Try it again. */
fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1)
return -1;
}
close(fd);
return 0;
}
struct conf_printer {
void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
void (*print_comment)(FILE *, const char *, void *);
@ -909,21 +950,16 @@ static int conf_write_dep(const char *name)
static int conf_touch_deps(void)
{
const char *name;
char path[PATH_MAX+1];
char *s, *d, c;
struct symbol *sym;
int res, i, fd;
int res, i;
strcpy(depfile_path, "include/config/");
depfile_prefix_len = strlen(depfile_path);
name = conf_get_autoconfig_name();
conf_read_simple(name, S_DEF_AUTO);
sym_calc_value(modules_sym);
if (make_parent_dir("include/config/foo.h"))
return 1;
if (chdir("include/config"))
return 1;
res = 0;
for_all_symbols(i, sym) {
sym_calc_value(sym);
if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name)
@ -975,42 +1011,12 @@ static int conf_touch_deps(void)
* different from 'no').
*/
/* Replace all '_' and append ".h" */
s = sym->name;
d = path;
while ((c = *s++)) {
c = tolower(c);
*d++ = (c == '_') ? '/' : c;
}
strcpy(d, ".h");
/* Assume directory path already exists. */
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
if (errno != ENOENT) {
res = 1;
break;
}
if (make_parent_dir(path)) {
res = 1;
goto out;
}
/* Try it again. */
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
res = 1;
break;
}
}
close(fd);
res = conf_touch_dep(sym->name);
if (res)
return res;
}
out:
if (chdir("../.."))
return 1;
return res;
return 0;
}
int conf_write_autoconf(int overwrite)