/*
* Any Postgres server process begins execution here.
*/
int
main(int argc, char *argv[])
{
progname = get_progname(argv[0]);
/*
* Platform-specific startup hacks
*/
startup_hacks(progname);
/*
* Remember the physical location of the initially given argv[] array for
* possible use by ps display. On some platforms, the argv[] storage must
* be overwritten in order to set the process title for ps. In such cases
* save_ps_display_args makes and returns a new copy of the argv[] array.
*
* save_ps_display_args may also move the environment strings to make
* extra room. Therefore this should be done as early as possible during
* startup, to avoid entanglements with code that might save a getenv()
* result pointer.
*/
argv = save_ps_display_args(argc, argv);
/*
* If supported on the current platform, set up a handler to be called if
* the backend/postmaster crashes with a fatal signal or exception.
*/
#if defined(WIN32) && defined(HAVE_MINIDUMP_TYPE)
pgwin32_install_crashdump_handler();
#endif
/*
* Set up locale information from environment. Note that LC_CTYPE and
* LC_COLLATE will be overridden later from pg_control if we are in an
* already-initialized database. We set them here so that they will be
* available to fill pg_control during initdb. LC_MESSAGES will get set
* later during GUC option processing, but we set it here to allow startup
* error messages to be localized.
*/
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("postgres"));
#ifdef WIN32
/*
* Windows uses codepages rather than the environment, so we work around
* that by querying the environment explicitly first for LC_COLLATE and
* LC_CTYPE. We have to do this because initdb passes those values in the
* environment. If there is nothing there we fall back on the codepage.
*/
{
char *env_locale;
if ((env_locale = getenv("LC_COLLATE")) != NULL)
pg_perm_setlocale(LC_COLLATE, env_locale);
else
pg_perm_setlocale(LC_COLLATE, "");
if ((env_locale = getenv("LC_CTYPE")) != NULL)
pg_perm_setlocale(LC_CTYPE, env_locale);
else
pg_perm_setlocale(LC_CTYPE, "");
}
#else
pg_perm_setlocale(LC_COLLATE, "");
pg_perm_setlocale(LC_CTYPE, "");
#endif
#ifdef LC_MESSAGES
pg_perm_setlocale(LC_MESSAGES, "");
#endif
/*
* We keep these set to "C" always, except transiently in pg_locale.c; see
* that file for explanations.
*/
pg_perm_setlocale(LC_MONETARY, "C");
pg_perm_setlocale(LC_NUMERIC, "C");
pg_perm_setlocale(LC_TIME, "C");
/*
* Now that we have absorbed as much as we wish to from the locale
* environment, remove any LC_ALL setting, so that the environment
* variables installed by pg_perm_setlocale have force.
*/
unsetenv("LC_ALL");
/*
* Catch standard options before doing much else
*/
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
help(progname);
exit(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
puts("postgres (PostgreSQL) " PG_VERSION);
exit(0);
}
}
/*
* Make sure we are not running as root.
*/
check_root(progname);
/*
* Dispatch to one of various subprograms depending on first argument.
*/
#ifdef EXEC_BACKEND
if (argc > 1 && strncmp(argv[1], "--fork", 6) == 0)
exit(SubPostmasterMain(argc, argv));
#endif
#ifdef WIN32
/*
* Start our win32 signal implementation
*
* SubPostmasterMain() will do this for itself, but the remaining modes
* need it here
*/
pgwin32_signal_initialize();
#endif
if (argc > 1 && strcmp(argv[1], "--boot") == 0)
AuxiliaryProcessMain(argc, argv); /* does not return */
if (argc > 1 && strcmp(argv[1], "--describe-config") == 0)
exit(GucInfoMain());
if (argc > 1 && strcmp(argv[1], "--single") == 0)
exit(PostgresMain(argc, argv, get_current_username(progname)));
exit(PostmasterMain(argc, argv));
}
/*
* Any Postgres server process begins execution here.
*/
int
main(int argc, char *argv[])
{
bool do_check_root = true;
progname = get_progname(argv[0]);
/*
* Platform-specific startup hacks
*/
startup_hacks(progname);
/*
* Remember the physical location of the initially given argv[] array for
* possible use by ps display. On some platforms, the argv[] storage must
* be overwritten in order to set the process title for ps. In such cases
* save_ps_display_args makes and returns a new copy of the argv[] array.
*
* save_ps_display_args may also move the environment strings to make
* extra room. Therefore this should be done as early as possible during
* startup, to avoid entanglements with code that might save a getenv()
* result pointer.
*/
argv = save_ps_display_args(argc, argv);
/*
* If supported on the current platform, set up a handler to be called if
* the backend/postmaster crashes with a fatal signal or exception.
*/
#if defined(WIN32) && defined(HAVE_MINIDUMP_TYPE)
pgwin32_install_crashdump_handler();
#endif
/*
* Fire up essential subsystems: error and memory management
*
* Code after this point is allowed to use elog/ereport, though
* localization of messages may not work right away, and messages won't go
* anywhere but stderr until GUC settings get loaded.
*/
MemoryContextInit();
/*
* Set up locale information from environment. Note that LC_CTYPE and
* LC_COLLATE will be overridden later from pg_control if we are in an
* already-initialized database. We set them here so that they will be
* available to fill pg_control during initdb. LC_MESSAGES will get set
* later during GUC option processing, but we set it here to allow startup
* error messages to be localized.
*/
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("postgres"));
#ifdef WIN32
/*
* Windows uses codepages rather than the environment, so we work around
* that by querying the environment explicitly first for LC_COLLATE and
* LC_CTYPE. We have to do this because initdb passes those values in the
* environment. If there is nothing there we fall back on the codepage.
*/
{
char *env_locale;
if ((env_locale = getenv("LC_COLLATE")) != NULL)
init_locale("LC_COLLATE", LC_COLLATE, env_locale);
else
init_locale("LC_COLLATE", LC_COLLATE, "");
if ((env_locale = getenv("LC_CTYPE")) != NULL)
init_locale("LC_CTYPE", LC_CTYPE, env_locale);
else
init_locale("LC_CTYPE", LC_CTYPE, "");
}
#else
init_locale("LC_COLLATE", LC_COLLATE, "");
init_locale("LC_CTYPE", LC_CTYPE, "");
#endif
#ifdef LC_MESSAGES
init_locale("LC_MESSAGES", LC_MESSAGES, "");
#endif
/*
* We keep these set to "C" always, except transiently in pg_locale.c; see
* that file for explanations.
*/
init_locale("LC_MONETARY", LC_MONETARY, "C");
init_locale("LC_NUMERIC", LC_NUMERIC, "C");
init_locale("LC_TIME", LC_TIME, "C");
/*
* Now that we have absorbed as much as we wish to from the locale
* environment, remove any LC_ALL setting, so that the environment
* variables installed by pg_perm_setlocale have force.
*/
unsetenv("LC_ALL");
check_strxfrm_bug();
/*
* Catch standard options before doing much else, in particular before we
* insist on not being root.
*/
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
help(progname);
exit(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
puts("postgres (PostgreSQL) " PG_VERSION);
exit(0);
}
/*
* In addition to the above, we allow "--describe-config" and "-C var"
* to be called by root. This is reasonably safe since these are
* read-only activities. The -C case is important because pg_ctl may
* try to invoke it while still holding administrator privileges on
* Windows. Note that while -C can normally be in any argv position,
* if you want to bypass the root check you must put it first. This
* reduces the risk that we might misinterpret some other mode's -C
* switch as being the postmaster/postgres one.
*/
if (strcmp(argv[1], "--describe-config") == 0)
do_check_root = false;
else if (argc > 2 && strcmp(argv[1], "-C") == 0)
do_check_root = false;
}
/*
* Make sure we are not running as root, unless it's safe for the selected
* option.
*/
if (do_check_root)
check_root(progname);
/*
* Dispatch to one of various subprograms depending on first argument.
*/
#ifdef EXEC_BACKEND
if (argc > 1 && strncmp(argv[1], "--fork", 6) == 0)
SubPostmasterMain(argc, argv); /* does not return */
#endif
#ifdef WIN32
/*
* Start our win32 signal implementation
*
* SubPostmasterMain() will do this for itself, but the remaining modes
* need it here
*/
pgwin32_signal_initialize();
#endif
if (argc > 1 && strcmp(argv[1], "--boot") == 0)
AuxiliaryProcessMain(argc, argv); /* does not return */
else if (argc > 1 && strcmp(argv[1], "--describe-config") == 0)
GucInfoMain(); /* does not return */
else if (argc > 1 && strcmp(argv[1], "--single") == 0)
PostgresMain(argc, argv,
NULL, /* no dbname */
strdup(get_user_name_or_exit(progname))); /* does not return */
else
PostmasterMain(argc, argv); /* does not return */
abort(); /* should not get here */
}