mirror of https://github.com/postgres/postgres
Install a default configuration file. Clean up some funny business in the config file code.REL7_1_STABLE
Peter Eisentraut
26 years ago
parent
2ea370a3ce
commit
209aa77d98
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# |
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# PostgreSQL configuration file |
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# ----------------------------- |
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# |
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# This file consists of lines of the form |
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# |
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# name = value |
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# |
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# (The `=' is optional.) White space is collapsed, comments are |
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# introduced by `#' anywhere on a line. The complete list of option |
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# names and allowed values can be found in the PostgreSQL |
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# documentation. Examples are: |
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#log_connections = on |
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#fsync = off |
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#max_backends = 64 |
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# Any option can also be given as a command line switch to the |
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# postmaster, e.g., `postmaster --log-connections=on'. Some options |
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# can be set at run-time with the `SET' SQL command. |
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/*--------------------------------------------------------------------
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* ps_status.c |
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* |
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* Routines to support changing the ps display of PostgreSQL backends |
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* to contain some useful information. Differs wildly across |
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* platforms. |
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* |
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* $Header: /cvsroot/pgsql/src/backend/utils/misc/ps_status.c,v 1.1 2000/06/04 01:44:34 petere Exp $ |
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* |
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* Copyright 2000 by PostgreSQL Global Development Group |
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* various details abducted from various places |
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*-------------------------------------------------------------------- |
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*/ |
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#include "postgres.h" |
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#include <unistd.h> |
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#ifdef HAVE_SYS_PSTAT_H |
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# include <sys/pstat.h> /* for HP-UX */ |
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#endif |
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#ifdef HAVE_MACHINE_VMPARAM_H |
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# include <machine/vmparam.h> /* for old BSD */ |
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#endif |
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#ifdef HAVE_SYS_EXEC_H |
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# include <sys/exec.h> /* for old BSD */ |
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#endif |
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#include "miscadmin.h" |
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#include "utils/ps_status.h" |
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extern char **environ; |
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/*------
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* Alternative ways of updating ps display: |
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* |
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* PS_USE_SETPROCTITLE |
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* use the function setproctitle(const char *, ...) |
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* (newer BSD systems) |
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* PS_USE_PSTAT |
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* use the pstat(PSTAT_SETCMD, ) |
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* (HPUX) |
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* PS_USE_PS_STRINGS |
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* assign PS_STRINGS->ps_argvstr = "string" |
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* (some BSD systems) |
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* PS_USE_CHANCE_ARGV |
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* assign argv[0] = "string" |
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* (some other BSD systems) |
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* PS_USE_CLOBBER_ARGV |
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* write over the argv and environment area |
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* (most SysV-like systems) |
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* PS_USE_NONE |
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* don't update ps display |
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* (This is the default, as it is safest.) |
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*/ |
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#if defined(HAVE_SETPROCTITLE) |
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# define PS_USE_SETPROCTITLE |
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#elif defined(HAVE_PSTAT) && defined(PSTAT_SETCMD) |
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# define PS_USE_PSTAT |
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#elif defined(HAVE_PS_STRINGS) |
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# define PS_USE_PS_STRINGS |
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#elif defined(BSD) || defined(__bsdi__) || defined(__hurd__) |
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# define PS_USE_CHANGE_ARGV |
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#elif defined(__linux__) || defined(_AIX4) || defined(_AIX3) || defined(__sgi) || (defined(sun) && !defined(BSD)) || defined(ultrix) || defined(__ksr__) || defined(__osf__) || defined(__QNX__) || defined(__svr4__) || defined(__svr5__) |
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# define PS_USE_CLOBBER_ARGV |
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#else |
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# define PS_USE_NONE |
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#endif |
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/* Different systems want the buffer padded differently */ |
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#if defined(_AIX3) || defined(__linux__) || defined(__QNX__) || defined(__svr4__) |
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# define PS_PADDING '\0' |
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#else |
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# define PS_PADDING ' ' |
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#endif |
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#ifndef PS_USE_CLOBBER_ARGV |
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/* all but one options need a buffer to write their ps line in */ |
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#define PS_BUFFER_SIZE 256 |
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static char ps_buffer[PS_BUFFER_SIZE]; |
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static const size_t ps_buffer_size = PS_BUFFER_SIZE; |
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#else /* PS_USE_CLOBBER_ARGV */ |
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static char * ps_buffer; /* will point to argv area */ |
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static size_t ps_buffer_size; /* space determined at run time */ |
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#endif /* PS_USE_CLOBBER_ARGV */ |
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static size_t ps_buffer_fixed_size; /* size of the constant prefix */ |
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/*
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* Call this once at backend start. |
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*/ |
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void |
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init_ps_display(int argc, char *argv[], |
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const char * username, const char * dbname, |
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const char * host_info) |
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{ |
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#ifndef PS_USE_NONE |
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Assert(username); |
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Assert(dbname); |
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/* no ps display for stand-alone backend */ |
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if (!IsUnderPostmaster) |
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return; |
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# ifdef PS_USE_CHANGE_ARGV |
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argv[0] = ps_buffer; |
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argv[1] = NULL; |
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# endif /* PS_USE_CHANGE_ARGV */ |
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# ifdef PS_USE_CLOBBER_ARGV |
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/*
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* If we're going to overwrite the argv area, count the space. |
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*/ |
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{ |
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char * end_of_area = NULL; |
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char **new_environ; |
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int i; |
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/*
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* check for contiguous argv strings |
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*/ |
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for (i = 0; i < argc; i++) |
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if (i == 0 || end_of_area + 1 == argv[i]) |
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end_of_area = argv[i] + strlen(argv[i]); |
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/*
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* check for contiguous environ strings following argv |
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*/ |
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for (i = 0; end_of_area != NULL && environ[i] != NULL; i++) |
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if (end_of_area + 1 == environ[i]) |
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end_of_area = environ[i] + strlen(environ[i]); |
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if (end_of_area == NULL) |
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{ |
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ps_buffer = NULL; |
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ps_buffer_size = 0; |
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} |
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else |
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{ |
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ps_buffer = argv[0]; |
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ps_buffer_size = end_of_area - argv[0] - 1; |
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} |
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argv[1] = NULL; |
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/*
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* move the environment out of the way |
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*/ |
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for (i = 0; environ[i] != NULL; i++) |
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; |
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new_environ = malloc(sizeof (char *) * (i + 1)); |
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for (i = 0; environ[i] != NULL; i++) |
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new_environ[i] = strdup(environ[i]); |
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new_environ[i] = NULL; |
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environ = new_environ; |
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} |
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# endif /* PS_USE_CLOBBER_ARGV */ |
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/*
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* Make fixed prefix |
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*/ |
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# ifdef PS_USE_SETPROCTITLE |
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/* apparently setproctitle() already adds a `progname:' prefix to
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* the ps line */ |
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snprintf(ps_buffer, ps_buffer_size, |
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"%s %s %s ", |
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username, dbname, host_info); |
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# else |
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snprintf(ps_buffer, ps_buffer_size, |
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"postgres: %s %s %s ", |
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username, dbname, host_info); |
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# endif |
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ps_buffer_fixed_size = strlen(ps_buffer); |
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#endif /* not PS_USE_NONE */ |
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} |
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/*
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* Call this to update the ps status display to a fixed prefix plus an |
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* indication of what you're currently doing passed in the argument. |
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*/ |
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void |
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set_ps_display(const char * value) |
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{ |
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/* no ps display for stand-alone backend */ |
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if (!IsUnderPostmaster) |
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return; |
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#ifndef PS_USE_NONE |
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if (!ps_buffer) |
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return; |
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# ifdef PS_USE_SETPROCTITLE |
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setproctitle("%s%s", ps_buffer, value); |
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# else /* not PS_USE_SETPROCTITLE */ |
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{ |
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size_t vallen = strlen(value); |
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strncpy(ps_buffer + ps_buffer_fixed_size, value, |
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ps_buffer_size - ps_buffer_fixed_size); |
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if (ps_buffer_fixed_size + vallen >= ps_buffer_size) |
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ps_buffer[ps_buffer_size - 1] = 0; |
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else |
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ps_buffer[ps_buffer_fixed_size + vallen] = 0; |
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# ifdef PS_USE_PSTAT |
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{ |
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union pstun pst; |
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pst.pst_command = ps_buffer; |
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pstat(PSTAT_SETCMD, pst, strlen(ps_buffer), 0, 0); |
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} |
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# endif /* PS_USE_PSTAT */ |
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# ifdef PS_USE_PS_STRINGS |
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PS_STRINGS->ps_nargvstr = 1; |
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PS_STRINGS->ps_argvstr = ps_buffer; |
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# endif /* PS_USE_PS_STRINGS */ |
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# ifdef PS_USE_CLOBBER_ARGV |
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{ |
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char * cp; |
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/* pad unused memory */ |
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for(cp = ps_buffer + ps_buffer_fixed_size + vallen; |
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cp < ps_buffer + ps_buffer_size; |
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cp++) |
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*cp = PS_PADDING; |
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} |
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# endif /* PS_USE_CLOBBER_ARGV */ |
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} |
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# endif /* not USE_SETPROCTITLE */ |
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#endif /* not PS_USE_NONE */ |
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} |
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/*
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* Returns what's currently in the ps display, in case someone needs |
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* it. |
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*/ |
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const char * |
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get_ps_display(void) |
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{ |
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return ps_buffer + ps_buffer_fixed_size; |
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} |
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@ -1 +0,0 @@ |
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