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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >adminpack</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Additional Supplied Modules" HREF="contrib.html"><LINK REL="PREVIOUS" TITLE="Additional Supplied Modules" HREF="contrib.html"><LINK REL="NEXT" TITLE="auth_delay" HREF="auth-delay.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="Additional Supplied Modules" HREF="contrib.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="contrib.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Appendix F. Additional Supplied Modules</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="auth_delay" HREF="auth-delay.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="ADMINPACK" >F.1. adminpack</A ></H1 ><P > <TT CLASS="FILENAME" >adminpack</TT > provides a number of support functions which <SPAN CLASS="APPLICATION" >pgAdmin</SPAN > and other administration and management tools can use to provide additional functionality, such as remote management of server log files. Use of all these functions is restricted to superusers. </P ><P > The functions shown in <A HREF="adminpack.html#FUNCTIONS-ADMINPACK-TABLE" >Table F-1</A > provide write access to files on the machine hosting the server. (See also the functions in <A HREF="functions-admin.html#FUNCTIONS-ADMIN-GENFILE-TABLE" >Table 9-66</A >, which provide read-only access.) Only files within the database cluster directory can be accessed, but either a relative or absolute path is allowable. </P ><DIV CLASS="TABLE" ><A NAME="FUNCTIONS-ADMINPACK-TABLE" ></A ><P ><B >Table F-1. <TT CLASS="FILENAME" >adminpack</TT > Functions</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Return Type</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_file_write(filename text, data text, append boolean)</CODE ></TD ><TD ><TT CLASS="TYPE" >bigint</TT ></TD ><TD > Write, or append to, a text file </TD ></TR ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_file_rename(oldname text, newname text [<SPAN CLASS="OPTIONAL" >, archivename text</SPAN >])</CODE ></TD ><TD ><TT CLASS="TYPE" >boolean</TT ></TD ><TD > Rename a file </TD ></TR ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_file_unlink(filename text)</CODE ></TD ><TD ><TT CLASS="TYPE" >boolean</TT ></TD ><TD > Remove a file </TD ></TR ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_logdir_ls()</CODE ></TD ><TD ><TT CLASS="TYPE" >setof record</TT ></TD ><TD > List the log files in the <TT CLASS="VARNAME" >log_directory</TT > directory </TD ></TR ></TBODY ></TABLE ></DIV ><P > <CODE CLASS="FUNCTION" >pg_file_write</CODE > writes the specified <TT CLASS="PARAMETER" >data</TT > into the file named by <TT CLASS="PARAMETER" >filename</TT >. If <TT CLASS="PARAMETER" >append</TT > is false, the file must not already exist. If <TT CLASS="PARAMETER" >append</TT > is true, the file can already exist, and will be appended to if so. Returns the number of bytes written. </P ><P > <CODE CLASS="FUNCTION" >pg_file_rename</CODE > renames a file. If <TT CLASS="PARAMETER" >archivename</TT > is omitted or NULL, it simply renames <TT CLASS="PARAMETER" >oldname</TT > to <TT CLASS="PARAMETER" >newname</TT > (which must not already exist). If <TT CLASS="PARAMETER" >archivename</TT > is provided, it first renames <TT CLASS="PARAMETER" >newname</TT > to <TT CLASS="PARAMETER" >archivename</TT > (which must not already exist), and then renames <TT CLASS="PARAMETER" >oldname</TT > to <TT CLASS="PARAMETER" >newname</TT >. In event of failure of the second rename step, it will try to rename <TT CLASS="PARAMETER" >archivename</TT > back to <TT CLASS="PARAMETER" >newname</TT > before reporting the error. Returns true on success, false if the source file(s) are not present or not writable; other cases throw errors. </P ><P > <CODE CLASS="FUNCTION" >pg_file_unlink</CODE > removes the specified file. Returns true on success, false if the specified file is not present or the <CODE CLASS="FUNCTION" >unlink()</CODE > call fails; other cases throw errors. </P ><P > <CODE CLASS="FUNCTION" >pg_logdir_ls</CODE > returns the start timestamps and path names of all the log files in the <A HREF="runtime-config-logging.html#GUC-LOG-DIRECTORY" >log_directory</A > directory. The <A HREF="runtime-config-logging.html#GUC-LOG-FILENAME" >log_filename</A > parameter must have its default setting (<TT CLASS="LITERAL" >postgresql-%Y-%m-%d_%H%M%S.log</TT >) to use this function. </P ><P > The functions shown in <A HREF="adminpack.html#FUNCTIONS-ADMINPACK-DEPRECATED-TABLE" >Table F-2</A > are deprecated and should not be used in new applications; instead use those shown in <A HREF="functions-admin.html#FUNCTIONS-ADMIN-SIGNAL-TABLE" >Table 9-59</A > and <A HREF="functions-admin.html#FUNCTIONS-ADMIN-GENFILE-TABLE" >Table 9-66</A >. These functions are provided in <TT CLASS="FILENAME" >adminpack</TT > only for compatibility with old versions of <SPAN CLASS="APPLICATION" >pgAdmin</SPAN >. </P ><DIV CLASS="TABLE" ><A NAME="FUNCTIONS-ADMINPACK-DEPRECATED-TABLE" ></A ><P ><B >Table F-2. Deprecated <TT CLASS="FILENAME" >adminpack</TT > Functions</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Return Type</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_file_read(filename text, offset bigint, nbytes bigint)</CODE ></TD ><TD ><TT CLASS="TYPE" >text</TT ></TD ><TD > Alternate name for <CODE CLASS="FUNCTION" >pg_read_file()</CODE > </TD ></TR ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_file_length(filename text)</CODE ></TD ><TD ><TT CLASS="TYPE" >bigint</TT ></TD ><TD > Same as <TT CLASS="STRUCTFIELD" >size</TT > column returned by <CODE CLASS="FUNCTION" >pg_stat_file()</CODE > </TD ></TR ><TR ><TD ><CODE CLASS="FUNCTION" >pg_catalog.pg_logfile_rotate()</CODE ></TD ><TD ><TT CLASS="TYPE" >integer</TT ></TD ><TD > Alternate name for <CODE CLASS="FUNCTION" >pg_rotate_logfile()</CODE >, but note that it returns integer 0 or 1 rather than boolean </TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="contrib.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="auth-delay.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Additional Supplied Modules</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="contrib.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >auth_delay</TD ></TR ></TABLE ></DIV ></BODY ></HTML >