提交 f094f8a1 编写于 作者: Y Yann E. MORIN 提交者: Michal Marek

kconfig: allow multiple inclusion of the same file

Allow 'source'ing the same file from multiple places (eg. from
different files, and/or under different conditions).

To avoid circular inclusion, scan the source-ancestry of the
current file, and abort if already sourced in this branch.

Regenerate the pre-parsed lex.zconf.c_shipped file.
Signed-off-by: N"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: NMichal Marek <mmarek@suse.cz>
上级 466de918
......@@ -2368,6 +2368,7 @@ void zconf_initscan(const char *name)
void zconf_nextfile(const char *name)
{
struct file *iter;
struct file *file = file_lookup(name);
struct buffer *buf = malloc(sizeof(*buf));
memset(buf, 0, sizeof(*buf));
......@@ -2383,16 +2384,24 @@ void zconf_nextfile(const char *name)
buf->parent = current_buf;
current_buf = buf;
if (file->flags & FILE_BUSY) {
printf("%s:%d: do not source '%s' from itself\n",
zconf_curname(), zconf_lineno(), name);
exit(1);
}
if (file->flags & FILE_SCANNED) {
printf("%s:%d: file '%s' is already sourced from '%s'\n",
zconf_curname(), zconf_lineno(), name,
file->parent->name);
exit(1);
for (iter = current_file->parent; iter; iter = iter->parent ) {
if (!strcmp(current_file->name,iter->name) ) {
printf("%s:%d: recursive inclusion detected. "
"Inclusion path:\n current file : '%s'\n",
zconf_curname(), zconf_lineno(),
zconf_curname());
iter = current_file->parent;
while (iter && \
strcmp(iter->name,current_file->name)) {
printf(" included from: '%s:%d'\n",
iter->name, iter->lineno-1);
iter = iter->parent;
}
if (iter)
printf(" included from: '%s:%d'\n",
iter->name, iter->lineno+1);
exit(1);
}
}
file->flags |= FILE_BUSY;
file->lineno = 1;
......
......@@ -299,6 +299,7 @@ void zconf_initscan(const char *name)
void zconf_nextfile(const char *name)
{
struct file *iter;
struct file *file = file_lookup(name);
struct buffer *buf = malloc(sizeof(*buf));
memset(buf, 0, sizeof(*buf));
......@@ -314,16 +315,24 @@ void zconf_nextfile(const char *name)
buf->parent = current_buf;
current_buf = buf;
if (file->flags & FILE_BUSY) {
printf("%s:%d: do not source '%s' from itself\n",
zconf_curname(), zconf_lineno(), name);
exit(1);
}
if (file->flags & FILE_SCANNED) {
printf("%s:%d: file '%s' is already sourced from '%s'\n",
zconf_curname(), zconf_lineno(), name,
file->parent->name);
exit(1);
for (iter = current_file->parent; iter; iter = iter->parent ) {
if (!strcmp(current_file->name,iter->name) ) {
printf("%s:%d: recursive inclusion detected. "
"Inclusion path:\n current file : '%s'\n",
zconf_curname(), zconf_lineno(),
zconf_curname());
iter = current_file->parent;
while (iter && \
strcmp(iter->name,current_file->name)) {
printf(" included from: '%s:%d'\n",
iter->name, iter->lineno-1);
iter = iter->parent;
}
if (iter)
printf(" included from: '%s:%d'\n",
iter->name, iter->lineno+1);
exit(1);
}
}
file->flags |= FILE_BUSY;
file->lineno = 1;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册