ttdt_Revert(library call)

NAME
ttdt_Revert — request a ToolTalk client to revert a file

SYNOPSIS

#include &<Tt/tttk.h>
Tt_status ttdt_Revert(
Tt_message context,
const char *pathname,
Tt_scope the_scope,
XtAppContext app2run,
int ms_timeout);

DESCRIPTION

The ttdt_Revert function sends a Revert request in the the_scope argument and waits for the reply. A Revert request asks the handling ToolTalk client to discard any changes pending on pathname.

The context argument describes the environment to use. If context is not zero, messages created by ttdt_Revert inherit from context all contexts whose slotname begins with the characters ENV_.

The the_scope argument identifies the scope of the request. If the_scope is TT_SCOPE_NONE, ttdt_Revert tries TT_BOTH, and falls back to TT_FILE_IN_SESSION if, for example, the ToolTalk database server is not installed on the file server that owns pathname.

The ttdt_Revert function passes app2run and ms_timeout to tttk_block_while(3), blocking on the reply to the Save request it sends.

RETURN VALUE

Upon successful completion, the ttdt_Revert function returns the status of the operation as one of the following Tt_status values:

TT_OK
    The sent request received an affirmative reply within ms_timeout milliseconds.

TT_DESKTOP_ETIMEDOUT
    No reply was received within ms_timeout milliseconds.

TT_DESKTOP_EPROTO
    The request was failed, but the handler set the tt_message_status of the failure reply to TT_OK, instead of a specific error status.

TT_ERR_DBAVAIL
    The ToolTalk service could not access the ToolTalk database needed for this operation.

TT_ERR_DBEXIST
    The ToolTalk service could not access the specified ToolTalk database in the expected place.

TT_ERR_NOMEM
    There is insufficient memory available to perform the function.

TT_ERR_NOMP
    The ttsession(1) process is not running and the ToolTalk service cannot restart it.

TT_ERR_OVERFLOW
    The ToolTalk service has more active messages than it can handle. (The maximum number of active messages is implementation specific, but is at least 2000.)

TT_ERR_POINTER
    The pathname argument was NULL or was a ToolTalk error pointer.

TT_ERR_PROCID
    The specified process identifier is out of date or invalid.

SEE ALSO

Tt/tttk.h - Tttttk(5), ttdt_Save(3), ttdt_file_join(3), ttdt_file_event(3), tttk_block_while(3).