/*-------------------------------------------------------------------------
*
* main.c
- * Stub main() routine for the postgres backend.
+ * Stub main() routine for the postgres executable.
+ *
+ * This does some essential startup tasks for any incarnation of postgres
+ * (postmaster, standalone backend, or standalone bootstrap mode) and then
+ * dispatches to the proper FooMain() routine for the incarnation.
+ *
*
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.34 2000/11/16 05:51:00 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.35 2000/11/25 03:45:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include <pwd.h>
#include <unistd.h>
+#ifdef USE_LOCALE
+#include <locale.h>
+#endif
#if defined(__alpha) && !defined(linux) && !defined(__FreeBSD__)
#include <sys/sysinfo.h>
#undef ASSEMBLER
#endif
-#ifdef USE_LOCALE
-#include <locale.h>
-#endif
#include "miscadmin.h"
#include "bootstrap/bootstrap.h"
#include "tcop/tcopprot.h"
+
#define NOROOTEXEC "\
-\n\"root\" execution of the PostgreSQL backend is not permitted.\n\n\
-The backend must be started under its own userid to prevent\n\
+\n\"root\" execution of the PostgreSQL server is not permitted.\n\n\
+The server must be started under an unprivileged userid to prevent\n\
a possible system security compromise. See the INSTALL file for\n\
-more information on how to properly start the postmaster.\n\n"
+more information on how to properly start the server.\n\n"
+
int
main(int argc, char *argv[])
{
int len;
+ struct passwd *pw;
+
+ /*
+ * Place platform-specific startup hacks here. This is the right
+ * place to put code that must be executed early in launch of either
+ * a postmaster, a standalone backend, or a standalone bootstrap run.
+ * Note that this code will NOT be executed when a backend or
+ * sub-bootstrap run is forked by the postmaster.
+ *
+ * XXX The need for code here is proof that the platform in question
+ * is too brain-dead to provide a standard C execution environment
+ * without help. Avoid adding more here, if you can.
+ */
#if defined(__alpha)
#ifdef NOFIXADE
int buffer[] = {SSIN_UACPROC, UAC_NOPRINT};
#endif /* NOPRINTADE */
-#endif
+#endif /* __alpha */
-#ifdef USE_LOCALE
- setlocale(LC_CTYPE, ""); /* take locale information from an
- * environment */
- setlocale(LC_COLLATE, "");
- setlocale(LC_MONETARY, "");
-#endif
#if defined(NOFIXADE) || defined(NOPRINTADE)
- /*
- * Must be first so that the bootstrap code calls it, too. (Only
- * needed on some RISC architectures.)
- */
-
#if defined(ultrix4)
syscall(SYS_sysmips, MIPS_FIXADE, 0, NULL, NULL, NULL);
#endif
#if defined(__alpha)
if (setsysinfo(SSI_NVPAIRS, buffer, 1, (caddr_t) NULL,
(unsigned long) NULL) < 0)
- elog(NOTICE, "setsysinfo failed: %d\n", errno);
+ fprintf(stderr, "setsysinfo failed: %d\n", errno);
#endif
#endif /* NOFIXADE || NOPRINTADE */
+#ifdef __BEOS__
+ /* BeOS-specific actions on startup */
+ beos_startup(argc,argv);
+#endif
+
/*
- * use one executable for both postgres and postmaster, invoke one or
- * the other depending on the name of the executable
+ * Not-quite-so-platform-specific startup environment checks.
+ * Still best to minimize these.
*/
- len = strlen(argv[0]);
-/* OK this is going to seem weird, but BeOS is presently basically
- * a single user system. There is work going on, but at present it'll
- * say that every user is uid 0, i.e. root. We'll inhibit this check
- * until Be get the system working with multiple users!!
- */
+ /*
+ * Make sure we are not running as root.
+ *
+ * BeOS currently runs everything as root :-(, so this check must
+ * be temporarily disabled there...
+ */
#ifndef __BEOS__
-if (!geteuid())
+ if (geteuid() == 0)
{
fprintf(stderr, "%s", NOROOTEXEC);
exit(1);
}
#endif /* __BEOS__ */
-#ifdef __BEOS__
- /* Specific beos actions on startup */
- beos_startup(argc,argv);
+ /*
+ * Set up locale information from environment, in only the categories
+ * needed by Postgres; leave other categories set to default "C".
+ * (Note that CTYPE and 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.)
+ */
+#ifdef USE_LOCALE
+ setlocale(LC_CTYPE, "");
+ setlocale(LC_COLLATE, "");
+ setlocale(LC_MONETARY, "");
#endif
+ /*
+ * Now dispatch to one of PostmasterMain, PostgresMain, or BootstrapMain
+ * depending on the program name (and possibly first argument) we
+ * were called with. The lack of consistency here is historical.
+ */
+ len = strlen(argv[0]);
- if (len >= 10 && !strcmp(argv[0] + len - 10, "postmaster"))
+ if (len >= 10 && strcmp(argv[0] + len - 10, "postmaster") == 0)
+ {
+ /* Called as "postmaster" */
exit(PostmasterMain(argc, argv));
+ }
/*
- * if the first argument is "-boot", then invoke the backend in
- * bootstrap mode
+ * If the first argument is "-boot", then invoke bootstrap mode.
+ * Note we remove "-boot" from the arguments passed on to BootstrapMain.
*/
if (argc > 1 && strcmp(argv[1], "-boot") == 0)
- exit(BootstrapMain(argc - 1, argv + 1)); /* remove the -boot arg
- * from the command line */
- else
+ exit(BootstrapMain(argc - 1, argv + 1));
+
+ /*
+ * Otherwise we're a standalone backend. Invoke PostgresMain,
+ * specifying current userid as the "authenticated" Postgres user name.
+ */
+ pw = getpwuid(geteuid());
+ if (pw == NULL)
{
- struct passwd *pw;
-
- pw = getpwuid(geteuid());
- if (!pw)
- {
- fprintf(stderr, "%s: invalid current euid", argv[0]);
- exit(1);
- }
- exit(PostgresMain(argc, argv, argc, argv, pw->pw_name));
+ fprintf(stderr, "%s: invalid current euid", argv[0]);
+ exit(1);
}
+
+ exit(PostgresMain(argc, argv, argc, argv, pw->pw_name));
}
projects / postgresql / commitdiff