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Clean up comments, organize code snippets added at different times into

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a slightly less random order.
This commit is contained in:
Tom Lane
2000-11-25 03:45:47 +00:00
parent 249fe81c99
commit 7a161ac3b7
1 changed files with 81 additions and 50 deletions
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131
src/backend/main/main.c
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@ -1,14 +1,19 @@
/*------------------------------------------------------------------------- /*-------------------------------------------------------------------------
* *
* main.c * 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) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* *
* IDENTIFICATION * 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 $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -16,6 +21,9 @@
#include <pwd.h> #include <pwd.h>
#include <unistd.h> #include <unistd.h>
#ifdef USE_LOCALE
#include <locale.h>
#endif
#if defined(__alpha) && !defined(linux) && !defined(__FreeBSD__) #if defined(__alpha) && !defined(linux) && !defined(__FreeBSD__)
#include <sys/sysinfo.h> #include <sys/sysinfo.h>
@ -25,23 +33,35 @@
#undef ASSEMBLER #undef ASSEMBLER
#endif #endif
#ifdef USE_LOCALE
#include <locale.h>
#endif
#include "miscadmin.h" #include "miscadmin.h"
#include "bootstrap/bootstrap.h" #include "bootstrap/bootstrap.h"
#include "tcop/tcopprot.h" #include "tcop/tcopprot.h"
#define NOROOTEXEC "\ #define NOROOTEXEC "\
\n\"root\" execution of the PostgreSQL backend is not permitted.\n\n\ \n\"root\" execution of the PostgreSQL server is not permitted.\n\n\
The backend must be started under its own userid to prevent\n\ The server must be started under an unprivileged userid to prevent\n\
a possible system security compromise. See the INSTALL file for\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 int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
int len; 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) #if defined(__alpha)
#ifdef NOFIXADE #ifdef NOFIXADE
@ -52,21 +72,10 @@ main(int argc, char *argv[])
int buffer[] = {SSIN_UACPROC, UAC_NOPRINT}; int buffer[] = {SSIN_UACPROC, UAC_NOPRINT};
#endif /* NOPRINTADE */ #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) #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) #if defined(ultrix4)
syscall(SYS_sysmips, MIPS_FIXADE, 0, NULL, NULL, NULL); syscall(SYS_sysmips, MIPS_FIXADE, 0, NULL, NULL, NULL);
#endif #endif
@ -74,56 +83,78 @@ main(int argc, char *argv[])
#if defined(__alpha) #if defined(__alpha)
if (setsysinfo(SSI_NVPAIRS, buffer, 1, (caddr_t) NULL, if (setsysinfo(SSI_NVPAIRS, buffer, 1, (caddr_t) NULL,
(unsigned long) NULL) < 0) (unsigned long) NULL) < 0)
elog(NOTICE, "setsysinfo failed: %d\n", errno); fprintf(stderr, "setsysinfo failed: %d\n", errno);
#endif #endif
#endif /* NOFIXADE || NOPRINTADE */ #endif /* NOFIXADE || NOPRINTADE */
/* #ifdef __BEOS__
* use one executable for both postgres and postmaster, invoke one or /* BeOS-specific actions on startup */
* the other depending on the name of the executable beos_startup(argc,argv);
*/ #endif
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 * Not-quite-so-platform-specific startup environment checks.
* say that every user is uid 0, i.e. root. We'll inhibit this check * Still best to minimize these.
* 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__ #ifndef __BEOS__
if (!geteuid()) if (geteuid() == 0)
{ {
fprintf(stderr, "%s", NOROOTEXEC); fprintf(stderr, "%s", NOROOTEXEC);
exit(1); exit(1);
} }
#endif /* __BEOS__ */ #endif /* __BEOS__ */
#ifdef __BEOS__ /*
/* Specific beos actions on startup */ * Set up locale information from environment, in only the categories
beos_startup(argc,argv); * 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 #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)); exit(PostmasterMain(argc, argv));
}
/* /*
* if the first argument is "-boot", then invoke the backend in * If the first argument is "-boot", then invoke bootstrap mode.
* bootstrap mode * Note we remove "-boot" from the arguments passed on to BootstrapMain.
*/ */
if (argc > 1 && strcmp(argv[1], "-boot") == 0) if (argc > 1 && strcmp(argv[1], "-boot") == 0)
exit(BootstrapMain(argc - 1, argv + 1)); /* remove the -boot arg exit(BootstrapMain(argc - 1, argv + 1));
* from the command line */
else
{
struct passwd *pw;
pw = getpwuid(geteuid()); /*
if (!pw) * Otherwise we're a standalone backend. Invoke PostgresMain,
{ * specifying current userid as the "authenticated" Postgres user name.
fprintf(stderr, "%s: invalid current euid", argv[0]); */
exit(1); pw = getpwuid(geteuid());
} if (pw == NULL)
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));
} }