<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-a" /> <meta http-equiv="Content-Language" content="en" /> <meta name="description" content="SILC Secure Internet Live Conferencing" /> <meta name="keywords" content="SILC, secure, chat, protocol, cipher, encrypt, SKE" /> <meta content="INDEX, FOLLOW" name="ROBOTS" /> <style type="text/css"> <!-- body { color: #000000; background: #f0f0f0; font-family: Helvetica, Arial, Sans-serif; } a:link { text-decoration: none; color: #2f488f; } a:visited { text-decoration: none;color: #2f488f; } a:active { text-decoration: none; color: #2f488f; } --> </style> </head> <body topmargin="0" leftmargin="0" marginheight="0" marginwidth="0"> <table border="0" cellspacing="0" cellpadding="6" width="100%"> <tr valign="top" bgcolor="#dddddd"> <td><small>Copyright © 2001 - 2007 SILC Project<br /> <a href="http://silcnet.org">SILC Project Website</a></small></td> <td align="right"><small> <a href="index.html">SILC Toolkit Reference Manual</a><br /> <a href="toolkit_index.html">Index</a></small></td> </small></td> </tr> </table> <table border="0" cellspacing="0" cellpadding="0" width="100%"> <tr bgcolor="#444444"><td><img src="space.gif" width="1" height="1"border="0" alt="" ></td></tr> </table> <table cellpadding="0" cellspacing="0" border="0"> <tr valign="top"> <td width="200" bgcolor="#f0f0f0"> <img src="space.gif" width="1" height="1" border="0" alt=""> <table width="100%" cellpadding="2" cellspacing="2" border="0"> <tr valign="top"><td> <br /> <small> <!-- Template file for the big index that appears in the Toolkit reference manual on the left side. With this file it is possible to add other than automatically generated links to that list. --> <a href="index.html"><img src="box.gif" border="0" alt="">SILC Toolkit Reference Manual</a><br /> <a href=silcvcardlib.html><img src=box.gif border=0 alt=>SILC VCard Library</a><br /> <a href=silcvcard.html><img src=box2.gif border=0 alt=>SILC VCard Interface</a><br /> <a href=silccryptlib.html><img src=box.gif border=0 alt=>SILC Crypto Library</a><br /> <a href=silcrng_intro.html><img src=box2.gif border=0 alt=>Introduction to SILC RNG</a><br /> <a href=silcrng.html><img src=box2.gif border=0 alt=>SILC RNG Interface</a><br /> <a href=silccipher.html><img src=box2.gif border=0 alt=>SILC Cipher API</a><br /> <a href=silcpkcs.html><img src=box2.gif border=0 alt=>SILC PKCS API</a><br /> <a href=silcpk.html><img src=box2.gif border=0 alt=>SILC Public Key API</a><br /> <a href=silcpkcs1.html><img src=box2.gif border=0 alt=>SILC PKCS #1 API</a><br /> <a href=silchash.html><img src=box2.gif border=0 alt=>SILC Hash Interface</a><br /> <a href=silchmac.html><img src=box2.gif border=0 alt=>SILC HMAC Interface</a><br /> <a href=silcclientlib.html><img src=box.gif border=0 alt=>SILC Client Library</a><br /> <a href=silcclient_using.html><img src=box2.gif border=0 alt=>Using SILC Client Library Tutorial</a><br /> <a href=command_reply_args.html><img src=box2.gif border=0 alt=>Arguments for <b>command_reply</b> Client Operation</a><br /> <a href=silcstatus_args.html><img src=box2.gif border=0 alt=>SilcStatus Error Arguments in <b>command_reply</b> Client Operation</a><br /> <a href=notifyargs.html><img src=box2.gif border=0 alt=>Arguments for <b>notify</b> Client Operation</a><br /> <a href=silcclient_unicode.html><img src=box2.gif border=0 alt=>Unicode and UTF-8 Strings in Client Library</a><br /> <a href=silcclient.html><img src=box2.gif border=0 alt=>Client Library Interface Reference</a><br /> <a href=silcclient_entry.html><img src=box2.gif border=0 alt=>Client Entry Interface Reference</a><br /> <a href=silcmathlib.html><img src=box.gif border=0 alt=>SILC Math Library</a><br /> <a href=silcmp.html><img src=box2.gif border=0 alt=>SILC MP Interface</a><br /> <a href=silcmath.html><img src=box2.gif border=0 alt=>SILC Math Interface</a><br /> <a href=silcaputillib.html><img src=box.gif border=0 alt=>SILC Application Utility Library</a><br /> <a href=silcapputil.html><img src=box2.gif border=0 alt=>SILC Application Utilities</a><br /> <a href=silcidcache.html><img src=box2.gif border=0 alt=>SILC ID Cache Interface</a><br /> <a href=silcskrlib.html><img src=box.gif border=0 alt=>SILC Key Repository Library</a><br /> <a href=silcskr.html><img src=box2.gif border=0 alt=>SILC SKR Interface</a><br /> <a href=silcasn1lib.html><img src=box.gif border=0 alt=>SILC ASN.1 Library</a><br /> <a href=silcasn1.html><img src=box2.gif border=0 alt=>SILC ASN.1 Interface</a><br /> <a href=silcber.html><img src=box2.gif border=0 alt=>SILC BER interface</a><br /> <a 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href=silcasync.html><img src=box2.gif border=0 alt=>Asynchronous Operation Interface</a><br /> <a href=silcstream.html><img src=box2.gif border=0 alt=>Abstract Stream Interface</a><br /> <a href=silcsocketstream.html><img src=box2.gif border=0 alt=>Socket Stream Interface</a><br /> <a href=silcfdstream.html><img src=box2.gif border=0 alt=>File Descriptor Stream Interface</a><br /> <a href=silcfileutil.html><img src=box2.gif border=0 alt=>File Utility Functions</a><br /> <a href=silcstrutil.html><img src=box2.gif border=0 alt=>String Utility Interface</a><br /> <a href=silcsnprintf.html><img src=box2.gif border=0 alt=>Snprintf Interface</a><br /> <a href=silcutf8.html><img src=box2.gif border=0 alt=>UTF-8 String Interface</a><br /> <a href=silcstringprep.html><img src=box2.gif border=0 alt=>Stringprep Interface</a><br /> <a href=silcutil.html><img src=box2.gif border=0 alt=>Utility Functions</a><br /> <a href=silclist.html><img src=box2.gif border=0 alt=>List Interface</a><br /> <a href=silcdlist.html><img src=box2.gif border=0 alt=>Dynamic List Interface</a><br /> <a href=silcmime.html><img src=box2.gif border=0 alt=>MIME Interface</a><br /> <a href=silctime.html><img src=box2.gif border=0 alt=>Time Utility Functions</a><br /> <a href=silclog.html><img src=box2.gif border=0 alt=>Logging Interface</a><br /> <a href=silcconfig.html><img src=box2.gif border=0 alt=>Config File Interface</a><br /> <a href=silchttplib.html><img src=box.gif border=0 alt=>SILC HTTP Library</a><br /> <a href=silchttpserver.html><img src=box2.gif border=0 alt=>SILC HTTP Server Interface</a><br /> <a href=silchttpphp.html><img src=box2.gif border=0 alt=>SILC HTTP PHP Translator</a><br /> <br /> <b>Resource Links</b> <br /> <a href="http://silcnet.org"><img src="box.gif" border="0" alt="">SILC Project Website</a><br /> <a href="http://silcnet.org/support/documentation/"><img src="box.gif" border="0" alt="">SILC Protocol Documentation</a><br /> <a href="http://silcnet.org/support/documentation/wp/"><img src="box.gif" border="0" alt="">SILC White Paper</a><br /> <a href="http://silcnet.org/support/faq/"><img src="box.gif" border="0" alt="">SILC FAQs</a><br /> </small> <br /><br /><br /><br /> </td></tr> </table> </td> <td bgcolor="#cccccc" background="dot.gif"> <img src="space.gif" width="1" height="1" border="0" alt=""></td> <td width="720" bgcolor="#ffffff"> <img src="space.gif" width="1" height="1" border="0" alt=""> <table cellpadding="2" cellspacing="6" width="100%"> <tr><td valign="top"> <br /> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML><HEAD> <TITLE>silcsftp_fs.html</TITLE> <!-- Source: silcsftp_fs.h --> <!-- Generated with ROBODoc Version 3.2.3 (Mar 20 2008) --> <!-- ROBODoc (c) 1994-2001 by Frans Slothouber and Jacco van Weert. --> </HEAD><BODY BGCOLOR="#FFFFFF"> <BR> <FONT SIZE="+2" COLOR="#000055"><B><A NAME="SFTP Filesystems Interface">SFTP Filesystems Interface</A></FONT></B><BR><SMALL>Header: silcsftp_fs.h</SMALL><BR><BR> <FONT SIZE="+1"><B> <FONT COLOR="#000055">DESCRIPTION </FONT></B></FONT> <PRE><FONT FACE="Helvetiva,Arial,Sans-serif"> SILC SFTP Filesystem interface defines filesystems for the SFTP server usage. The filesystems may be for example virtual memory filesystem or real filesystem access. Currently only implemented filesystem is memory file system. Memory Filesystem: Memory filesystem is a virtual filesystem which provides safe access to files without actually revealing the underlaying physical filesystem hierarchy or real filenames. Virtual directories can be added to the filesystem and freely create filesystem hierarchy. The directories can have subdirectories and files. The filesystem also provides limited status information for files. The files in the filesystem are virtual but they include the path to the real file. The real path includes always a schema which indicates where the file really is available. The only supported schema currently is "file://". In the future it could support various others like "<A HREF="http://"">http://"</A> and "ldap://". The filesystem also provides security and permission handling for directories and files. Normal POSIX style permissions can be set giving thus rights to reading, writing and/or executing. They behave same way as defined in POSIX. It is also guaranteed that if the writing to a file is not allowed in the memory filesystem, but it is allowed in real physical filesystem the file still cannot be written. However, the real physical filesystem permissions still matter, for example if writing is enabled in the memory filesystem but it is not enabled on physical filesystem, the file cannot be written. The directories cannot be removed from remote access using the filesystem access function sftp_rmdir. This is because the filesystem is one-user filesystem and differentiating between users is not possible. Thus, it would allow anyone to remove directories and their contents. Removing directories is possible only locally using the <A HREF="silcsftp_fs-silc_sftp_fs_memory_del_dir.html">silc_sftp_fs_memory_del_dir</A> function. The same thing is with removing files as well. Files too can be removed only locally using the <A HREF="silcsftp_fs-silc_sftp_fs_memory_del_file.html">silc_sftp_fs_memory_del_file</A> function. Also, files can not ever be executed from remote access. Also some of the file operation flags are not supported, such as SILC_SFTP_FXF_CREAT, SILC_SFTP_FXF_TRUNC and SILC_SFTP_FXF_EXCL since they would require access to a real filesystem file which does not exist yet, or would mean destroying the file. However, the SILC_SFTP_FXF_WRITE is supported since the file aready exists. The memory filesystem does not provide symbolic links. </FONT></PRE><LI><A HREF="silcsftp_fs-SilcSFTPFilesystemOps.html">SilcSFTPFilesystemOps</A> <LI><A HREF="silcsftp_fs-SilcSFTPFilesystem.html">SilcSFTPFilesystem</A> <LI><A HREF="silcsftp_fs-SilcSFTPFSMemoryPerm.html">SilcSFTPFSMemoryPerm</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_alloc.html">silc_sftp_fs_memory_alloc</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_free.html">silc_sftp_fs_memory_free</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_add_dir.html">silc_sftp_fs_memory_add_dir</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_del_dir.html">silc_sftp_fs_memory_del_dir</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_add_file.html">silc_sftp_fs_memory_add_file</A> <LI><A HREF="silcsftp_fs-silc_sftp_fs_memory_del_file.html">silc_sftp_fs_memory_del_file</A> </BODY></HTML> <br /><br /><br /><br /> </td></tr> </table> </td> <td bgcolor="#cccccc" background="dot.gif"> <img src="space.gif" width="1" height="1" border="0" alt=""></td> <td width="180" bgcolor="#f0f0f0"> <img src="space.gif" width="1" height="1" border="0" alt=""> <table width="100%" cellpadding="4" cellspacing="0"> <tr valign="top"><td> <br /> <font face="Helvetica,Arial,Sans-serif" size="1"> </font> <br /><br /><br /><br /> </td></tr> </table> </td> </tr> </table> <table border="0" cellspacing="0" cellpadding="0" width="100%"> <tr bgcolor="#444444"><td><img src="space.gif" width="1" height="1"border="0" alt="" ></td></tr> </table> <table border="0" cellspacing="0" cellpadding="6" width="100%"> <tr valign="top" bgcolor="#dddddd"> <td><small>Copyright © 2001 - 2007 SILC Project<br /> <a href="http://silcnet.org">SILC Project Website</a></small></td> <td align="right"><small> <a href="index.html">SILC Toolkit Reference Manual</a><br /> <a href="toolkit_index.html">Index</a></small></td> </small></td> </tr> </table> </body> </html>