PostgreSQL的 initdb 源代码分析之十五

继续分析：

if (pwprompt || pwfilename)
get_set_pwd();

由于我启动initdb的时候，没有设置口令相关的选项，故此略过。

接下来：

setup_depend();

展开：

就是一组sql问，送给 postgres 执行：

cmd的值是：

"/home/pgsql/project/bin/postgres" --single -F -O -c search_path=pg_catalog -c exit_on_error=true template1 >/dev/null

/*
* set up pg_depend
*/
static void
setup_depend(void)
{
PG_CMD_DECL;
const char **line;
static const char *pg_depend_setup[] = {
/*
* Make PIN entries in pg_depend for all objects made so far in the
* tables that the dependency code handles.  This is overkill (the
* system doesn't really depend on having every last weird datatype,
* for instance) but generating only the minimum required set of
* dependencies seems hard.
*
* Note that we deliberately do not pin the system views, which
* haven't been created yet.  Also, no conversions, databases, or
* tablespaces are pinned.
*
* First delete any already-made entries; PINs override all else, and
* must be the only entries for their objects.
*/
"DELETE FROM pg_depend;\n",
"VACUUM pg_depend;\n",
"DELETE FROM pg_shdepend;\n",
"VACUUM pg_shdepend;\n",

"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_class;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_proc;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_type;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_cast;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_constraint;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_attrdef;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_language;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_operator;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_opclass;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_opfamily;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_amop;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_amproc;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_rewrite;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_trigger;\n",

/*
* restriction here to avoid pinning the public namespace
*/
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_namespace "
"    WHERE nspname LIKE 'pg%';\n",

"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_ts_parser;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_ts_dict;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_ts_template;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_ts_config;\n",
"INSERT INTO pg_depend SELECT 0,0,0, tableoid,oid,0, 'p' "
" FROM pg_collation;\n",
"INSERT INTO pg_shdepend SELECT 0,0,0,0, tableoid,oid, 'p' "
" FROM pg_authid;\n",
NULL
};

fputs(_("initializing dependencies ... "), stdout);
fflush(stdout);

snprintf(cmd, sizeof(cmd),
"\"%s\" %s template1 >%s",
backend_exec, backend_options,
DEVNULL);

PG_CMD_OPEN;

for (line = pg_depend_setup; *line != NULL; line++)
PG_CMD_PUTS(*line);

PG_CMD_CLOSE;

check_ok();
}