tt_host_netfile_file(3) — Subroutines

CDE

NAME

tt_host_netfile_file − map between canonical and local pathnames on a remote host

SYNOPSIS

#include <tt_c.h> char ∗tt_host_netfile_file(const char ∗host,
const char ∗netfilename);

DESCRIPTION

The tt_host_netfile_file function performs a conversion equivalent to that of the tt_netfile_file(3) function, but performs it on a remote host.

The host argument is the host on which the file resides. The netfilename argument is a copy of a null-terminated string returned by tt_netfile_file(3) or tt_host_netfile_file(3).

RETURN VALUE

Upon successful completion, the tt_host_netfile_file function returns a freshly allocated null-terminated string of unspecified format, which can be passed to tt_host_netfile_file(3); otherwise, it returns an error pointer. The application can use tt_ptr_error(3) to extract one of the following Tt_status values from the returned pointer:

TT_ERR_DBAVAIL
The ToolTalk database server could not be reached on host, perhaps because the host is unavailable or cannot be reached through the network.

TT_ERR_DBEXIST
The ToolTalk database server is not properly installed on host.

TT_ERR_NETFILE
The netfilename is not a valid netfilename.

TT_ERR_UNIMP
The ToolTalk database server contacted is of a version that does not support tt_host_netfile_file.

APPLICATION USAGE

The tt_file_netfile(3), tt_netfile_file(3), tt_host_file_netfile(3) and tt_host_netfile_file(3) functions allow an application to determine a path valid on remote hosts, perhaps for purposes of constructing a command string valid for remote execution on that host. By composing the two calls, paths for files not accessible from the current host can be constructed. For example, if path /sample/file is valid on host A, a program running on host B can use

tt_host_netfile_file("C", tt_host_file_netfile("A", "/sample/file"))

to determine a path to the same file valid on host C, if such a path is possible.

Allocated strings should be freed using either tt_free(3) or tt_release(3).

The tt_open(3) function need not be called before tt_host_netfile_file.

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