Clean up comments, organize code snippets added at different times into
a slightly less random order.
This commit is contained in:
Tom Lane
parent
249fe81c99
commit
7a161ac3b7
@ -1,14 +1,19 @@
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/*-------------------------------------------------------------------------
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*
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* main.c
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* Stub main() routine for the postgres backend.
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* Stub main() routine for the postgres executable.
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*
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* This does some essential startup tasks for any incarnation of postgres
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* (postmaster, standalone backend, or standalone bootstrap mode) and then
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* dispatches to the proper FooMain() routine for the incarnation.
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*
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.34 2000/11/16 05:51:00 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.35 2000/11/25 03:45:47 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -16,6 +21,9 @@
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#include <pwd.h>
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#include <unistd.h>
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#ifdef USE_LOCALE
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#include <locale.h>
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#endif
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#if defined(__alpha) && !defined(linux) && !defined(__FreeBSD__)
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#include <sys/sysinfo.h>
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@ -25,23 +33,35 @@
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#undef ASSEMBLER
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#endif
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#ifdef USE_LOCALE
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#include <locale.h>
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#endif
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#include "miscadmin.h"
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#include "bootstrap/bootstrap.h"
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#include "tcop/tcopprot.h"
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#define NOROOTEXEC "\
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\n\"root\" execution of the PostgreSQL backend is not permitted.\n\n\
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The backend must be started under its own userid to prevent\n\
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\n\"root\" execution of the PostgreSQL server is not permitted.\n\n\
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The server must be started under an unprivileged userid to prevent\n\
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a possible system security compromise. See the INSTALL file for\n\
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more information on how to properly start the postmaster.\n\n"
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more information on how to properly start the server.\n\n"
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int
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main(int argc, char *argv[])
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{
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int len;
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struct passwd *pw;
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/*
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* Place platform-specific startup hacks here. This is the right
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* place to put code that must be executed early in launch of either
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* a postmaster, a standalone backend, or a standalone bootstrap run.
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* Note that this code will NOT be executed when a backend or
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* sub-bootstrap run is forked by the postmaster.
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*
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* XXX The need for code here is proof that the platform in question
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* is too brain-dead to provide a standard C execution environment
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* without help. Avoid adding more here, if you can.
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*/
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#if defined(__alpha)
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#ifdef NOFIXADE
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@ -52,21 +72,10 @@ main(int argc, char *argv[])
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int buffer[] = {SSIN_UACPROC, UAC_NOPRINT};
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#endif /* NOPRINTADE */
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#endif
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#endif /* __alpha */
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#ifdef USE_LOCALE
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setlocale(LC_CTYPE, ""); /* take locale information from an
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* environment */
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setlocale(LC_COLLATE, "");
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setlocale(LC_MONETARY, "");
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#endif
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#if defined(NOFIXADE) || defined(NOPRINTADE)
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/*
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* Must be first so that the bootstrap code calls it, too. (Only
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* needed on some RISC architectures.)
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*/
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#if defined(ultrix4)
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syscall(SYS_sysmips, MIPS_FIXADE, 0, NULL, NULL, NULL);
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#endif
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@ -74,56 +83,78 @@ main(int argc, char *argv[])
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#if defined(__alpha)
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if (setsysinfo(SSI_NVPAIRS, buffer, 1, (caddr_t) NULL,
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(unsigned long) NULL) < 0)
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elog(NOTICE, "setsysinfo failed: %d\n", errno);
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fprintf(stderr, "setsysinfo failed: %d\n", errno);
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#endif
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#endif /* NOFIXADE || NOPRINTADE */
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/*
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* use one executable for both postgres and postmaster, invoke one or
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* the other depending on the name of the executable
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*/
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len = strlen(argv[0]);
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#ifdef __BEOS__
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/* BeOS-specific actions on startup */
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beos_startup(argc,argv);
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#endif
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/* OK this is going to seem weird, but BeOS is presently basically
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* a single user system. There is work going on, but at present it'll
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* say that every user is uid 0, i.e. root. We'll inhibit this check
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* until Be get the system working with multiple users!!
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*/
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/*
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* Not-quite-so-platform-specific startup environment checks.
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* Still best to minimize these.
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*/
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/*
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* Make sure we are not running as root.
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*
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* BeOS currently runs everything as root :-(, so this check must
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* be temporarily disabled there...
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*/
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#ifndef __BEOS__
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if (!geteuid())
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if (geteuid() == 0)
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{
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fprintf(stderr, "%s", NOROOTEXEC);
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exit(1);
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}
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#endif /* __BEOS__ */
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#ifdef __BEOS__
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/* Specific beos actions on startup */
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beos_startup(argc,argv);
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/*
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* Set up locale information from environment, in only the categories
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* needed by Postgres; leave other categories set to default "C".
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* (Note that CTYPE and COLLATE will be overridden later from pg_control
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* if we are in an already-initialized database. We set them here so
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* that they will be available to fill pg_control during initdb.)
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*/
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#ifdef USE_LOCALE
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setlocale(LC_CTYPE, "");
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setlocale(LC_COLLATE, "");
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setlocale(LC_MONETARY, "");
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#endif
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/*
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* Now dispatch to one of PostmasterMain, PostgresMain, or BootstrapMain
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* depending on the program name (and possibly first argument) we
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* were called with. The lack of consistency here is historical.
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*/
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len = strlen(argv[0]);
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if (len >= 10 && !strcmp(argv[0] + len - 10, "postmaster"))
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if (len >= 10 && strcmp(argv[0] + len - 10, "postmaster") == 0)
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{
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/* Called as "postmaster" */
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exit(PostmasterMain(argc, argv));
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}
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/*
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* if the first argument is "-boot", then invoke the backend in
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* bootstrap mode
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* If the first argument is "-boot", then invoke bootstrap mode.
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* Note we remove "-boot" from the arguments passed on to BootstrapMain.
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*/
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if (argc > 1 && strcmp(argv[1], "-boot") == 0)
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exit(BootstrapMain(argc - 1, argv + 1)); /* remove the -boot arg
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* from the command line */
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else
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{
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struct passwd *pw;
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exit(BootstrapMain(argc - 1, argv + 1));
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pw = getpwuid(geteuid());
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if (!pw)
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{
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fprintf(stderr, "%s: invalid current euid", argv[0]);
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exit(1);
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}
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exit(PostgresMain(argc, argv, argc, argv, pw->pw_name));
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/*
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* Otherwise we're a standalone backend. Invoke PostgresMain,
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* specifying current userid as the "authenticated" Postgres user name.
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*/
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pw = getpwuid(geteuid());
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if (pw == NULL)
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{
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fprintf(stderr, "%s: invalid current euid", argv[0]);
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exit(1);
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}
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exit(PostgresMain(argc, argv, argc, argv, pw->pw_name));
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}
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