PostgreSQL的 initdb 源代码分析之十二

/* Now create all the text config files */
setup_config();

/*
* set up all the config files
*/
static void
setup_config(void)
{
char      **conflines;
char        repltok[100];
char        path[MAXPGPATH];

fputs(_("creating configuration files ... "), stdout);
fflush(stdout);

/* postgresql.conf */

conflines = readfile(conf_file);

snprintf(repltok, sizeof(repltok), "max_connections = %d", n_connections);
conflines = replace_token(conflines, "#max_connections = 100", repltok);

if ((n_buffers * (BLCKSZ / 1024)) % 1024 == 0)
snprintf(repltok, sizeof(repltok), "shared_buffers = %dMB",
(n_buffers * (BLCKSZ / 1024)) / 1024);
else
snprintf(repltok, sizeof(repltok), "shared_buffers = %dkB",
n_buffers * (BLCKSZ / 1024));
conflines = replace_token(conflines, "#shared_buffers = 32MB", repltok);

#if DEF_PGPORT != 5432
snprintf(repltok, sizeof(repltok), "#port = %d", DEF_PGPORT);
conflines = replace_token(conflines, "#port = 5432", repltok);
#endif

snprintf(repltok, sizeof(repltok), "lc_messages = '%s'",
escape_quotes(lc_messages));
conflines = replace_token(conflines, "#lc_messages = 'C'", repltok);

snprintf(repltok, sizeof(repltok), "lc_monetary = '%s'",
escape_quotes(lc_monetary));
conflines = replace_token(conflines, "#lc_monetary = 'C'", repltok);

snprintf(repltok, sizeof(repltok), "lc_numeric = '%s'",
escape_quotes(lc_numeric));
conflines = replace_token(conflines, "#lc_numeric = 'C'", repltok);

snprintf(repltok, sizeof(repltok), "lc_time = '%s'",
escape_quotes(lc_time));
conflines = replace_token(conflines, "#lc_time = 'C'", repltok);

switch (locale_date_order(lc_time))
{
case DATEORDER_YMD:
strcpy(repltok, "datestyle = 'iso, ymd'");
break;
case DATEORDER_DMY:
strcpy(repltok, "datestyle = 'iso, dmy'");
break;
case DATEORDER_MDY:
default:
strcpy(repltok, "datestyle = 'iso, mdy'");
break;
}
conflines = replace_token(conflines, "#datestyle = 'iso, mdy'", repltok);

snprintf(repltok, sizeof(repltok),
"default_text_search_config = 'pg_catalog.%s'",
escape_quotes(default_text_search_config));
conflines = replace_token(conflines,
"#default_text_search_config = 'pg_catalog.simple'",
repltok);

snprintf(path, sizeof(path), "%s/postgresql.conf", pg_data);

writefile(path, conflines);

chmod(path, S_IRUSR | S_IWUSR);

free(conflines);

/* pg_hba.conf */

conflines = readfile(hba_file);

#ifndef HAVE_UNIX_SOCKETS
conflines = filter_lines_with_token(conflines, "@remove-line-for-nolocal@");
#else
conflines = replace_token(conflines, "@remove-line-for-nolocal@", "");
#endif

#ifdef HAVE_IPV6

/*
* Probe to see if there is really any platform support for IPv6, and
* comment out the relevant pg_hba line if not.  This avoids runtime
* warnings if getaddrinfo doesn't actually cope with IPv6.  Particularly
* useful on Windows, where executables built on a machine with IPv6 may
* have to run on a machine without.
*/
{
struct addrinfo *gai_result;
struct addrinfo hints;
int            err = 0;

#ifdef WIN32
/* need to call WSAStartup before calling getaddrinfo */
WSADATA        wsaData;

err = WSAStartup(MAKEWORD(2, 2), &wsaData);
#endif

/* for best results, this code should match parse_hba() */
hints.ai_flags = AI_NUMERICHOST;
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = 0;
hints.ai_protocol = 0;
hints.ai_addrlen = 0;
hints.ai_canonname = NULL;
hints.ai_addr = NULL;
hints.ai_next = NULL;

if (err != 0 ||
getaddrinfo("::1", NULL, &hints, &gai_result) != 0)
conflines = replace_token(conflines,
"host    all             all             ::1",
"#host    all             all             ::1");
}
#else                            /* !HAVE_IPV6 */
/* If we didn't compile IPV6 support at all, always comment it out */
conflines = replace_token(conflines,
"host    all             all             ::1",
"#host    all             all             ::1");
#endif   /* HAVE_IPV6 */

/* Replace default authentication methods */
conflines = replace_token(conflines,
"@authmethod@",
authmethod);
conflines = replace_token(conflines,
"@authmethodlocal@",
authmethodlocal);

conflines = replace_token(conflines,
"@authcomment@",
strcmp(authmethod, "trust") ? "" : AUTHTRUST_WARNING);

/* Replace username for replication */
conflines = replace_token(conflines,
"@default_username@",
username);

snprintf(path, sizeof(path), "%s/pg_hba.conf", pg_data);

writefile(path, conflines);
chmod(path, S_IRUSR | S_IWUSR);

free(conflines);

/* pg_ident.conf */

conflines = readfile(ident_file);

snprintf(path, sizeof(path), "%s/pg_ident.conf", pg_data);

writefile(path, conflines);
chmod(path, S_IRUSR | S_IWUSR);

free(conflines);

check_ok();
}