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Add files to do read I/O on the cluster directory:

Browse Source 
pg_stat_file()
	pg_read_file()
	pg_ls_dir()
	pg_reload_conf()
	pg_rotate_logfile()

Dave Page
Andreas Pflug
This commit is contained in:
Bruce Momjian
2005-08-12 03:25:13 +00:00
parent d95886e734
commit b609695b7a
9 changed files with 485 additions and 15 deletions
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56
src/backend/utils/adt/misc.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/misc.c,v 1.45 2005/07/04 04:51:50 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/misc.c,v 1.46 2005/08/12 03:24:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -21,14 +21,23 @@
#include "commands/dbcommands.h"
#include "miscadmin.h"
#include "storage/procarray.h"
#include "storage/pmsignal.h"
#include "storage/fd.h"
#include "utils/builtins.h"
#include "utils/elog.h"
#include "funcapi.h"
#include "catalog/pg_type.h"
#include "catalog/pg_tablespace.h"
#include "postmaster/syslogger.h"
#define atooid(x) ((Oid) strtoul((x), NULL, 10))
typedef struct
{
char *location;
DIR *dirdesc;
} directory_fctx;
/*
* Check if data is Null
@ -107,6 +116,51 @@ pg_cancel_backend(PG_FUNCTION_ARGS)
PG_RETURN_INT32(pg_signal_backend(PG_GETARG_INT32(0), SIGINT));
}
Datum
pg_reload_conf(PG_FUNCTION_ARGS)
{
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
(errmsg("must be superuser to signal the postmaster"))));
if (kill(PostmasterPid, SIGHUP))
{
ereport(WARNING,
(errmsg("failed to send signal to postmaster: %m")));
PG_RETURN_INT32(0);
}
PG_RETURN_INT32(1);
}
/*
* Rotate log file
*/
Datum
pg_rotate_logfile(PG_FUNCTION_ARGS)
{
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
(errmsg("must be superuser to rotate log files"))));
if (!Redirect_stderr)
{
ereport(NOTICE,
(errcode(ERRCODE_WARNING),
errmsg("no logfile configured; rotation not supported")));
PG_RETURN_INT32(0);
}
SendPostmasterSignal(PMSIGNAL_ROTATE_LOGFILE);
PG_RETURN_INT32(0);
}
#ifdef NOT_USED
/* Disabled in 8.0 due to reliability concerns; FIXME someday */