/usr/share/doc/cdebconf/confmodule.txt is in cdebconf 0.192.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | Most clients can be written quite simply with shell or Perl.
Shell-script based clients
~~~~~~~~~~~~~~~~~~~~~~~~~~
Shell-script based debconf clients should source the confmodule support
library, /usr/share/debconf/confmodule by default.
Use of the shell confmodule library is described in the debconf
documentation.
Perl based clients
~~~~~~~~~~~~~~~~~~
/* to be added, need to modify ConfModule.pm */
C based clients
~~~~~~~~~~~~~~~
libdebconf has some simple support functions for C based clients;
the API is pretty simple:
#include <debconfclient.h>
struct debconfclient *client = debconfclient_new();
client->command(client, "INPUT", "low", "foo/bar", NULL);
myvar = client->value;
(or myvar = client->ret(client); )
/* ... */
debconfclient_delete(client);
the command method takes a NULL-terminated list of arguments to pass
to the confmodule. The result is stored in client->value;
File descriptors
~~~~~~~~~~~~~~~~
cdebconf opens some additional fds for the confmodule. Actually they are:
- 4: original stdin, defined as DEBCONF_OLD_STDIN_FD
- 5: original stdout, defined as DEBCONF_OLD_STDOUT_FD
Packages which want to call a console application may use them.
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