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: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
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@ -2368,6 +2368,7 @@ void zconf_initscan(const char *name)
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void zconf_nextfile(const char *name)
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{
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struct file *iter;
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struct file *file = file_lookup(name);
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struct buffer *buf = malloc(sizeof(*buf));
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memset(buf, 0, sizeof(*buf));
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@ -2383,16 +2384,24 @@ void zconf_nextfile(const char *name)
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buf->parent = current_buf;
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current_buf = buf;
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if (file->flags & FILE_BUSY) {
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printf("%s:%d: do not source '%s' from itself\n",
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zconf_curname(), zconf_lineno(), name);
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exit(1);
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}
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if (file->flags & FILE_SCANNED) {
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printf("%s:%d: file '%s' is already sourced from '%s'\n",
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zconf_curname(), zconf_lineno(), name,
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file->parent->name);
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exit(1);
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for (iter = current_file->parent; iter; iter = iter->parent ) {
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if (!strcmp(current_file->name,iter->name) ) {
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printf("%s:%d: recursive inclusion detected. "
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"Inclusion path:\n current file : '%s'\n",
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zconf_curname(), zconf_lineno(),
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zconf_curname());
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iter = current_file->parent;
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while (iter && \
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strcmp(iter->name,current_file->name)) {
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printf(" included from: '%s:%d'\n",
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iter->name, iter->lineno-1);
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iter = iter->parent;
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}
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if (iter)
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printf(" included from: '%s:%d'\n",
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iter->name, iter->lineno+1);
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exit(1);
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}
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}
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file->flags |= FILE_BUSY;
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file->lineno = 1;
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@ -299,6 +299,7 @@ void zconf_initscan(const char *name)
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void zconf_nextfile(const char *name)
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{
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struct file *iter;
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struct file *file = file_lookup(name);
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struct buffer *buf = malloc(sizeof(*buf));
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memset(buf, 0, sizeof(*buf));
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@ -314,16 +315,24 @@ void zconf_nextfile(const char *name)
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buf->parent = current_buf;
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current_buf = buf;
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if (file->flags & FILE_BUSY) {
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printf("%s:%d: do not source '%s' from itself\n",
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zconf_curname(), zconf_lineno(), name);
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exit(1);
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}
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if (file->flags & FILE_SCANNED) {
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printf("%s:%d: file '%s' is already sourced from '%s'\n",
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zconf_curname(), zconf_lineno(), name,
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file->parent->name);
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exit(1);
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for (iter = current_file->parent; iter; iter = iter->parent ) {
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if (!strcmp(current_file->name,iter->name) ) {
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printf("%s:%d: recursive inclusion detected. "
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"Inclusion path:\n current file : '%s'\n",
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zconf_curname(), zconf_lineno(),
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zconf_curname());
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iter = current_file->parent;
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while (iter && \
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strcmp(iter->name,current_file->name)) {
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printf(" included from: '%s:%d'\n",
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iter->name, iter->lineno-1);
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iter = iter->parent;
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}
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if (iter)
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printf(" included from: '%s:%d'\n",
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iter->name, iter->lineno+1);
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exit(1);
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}
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}
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file->flags |= FILE_BUSY;
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file->lineno = 1;
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