explain_getgroups_or_die(3) [debian man page]

explain_getgroups_or_die(3)				     Library Functions Manual				       explain_getgroups_or_die(3)

NAME

       explain_getgroups_or_die - get supplementary group IDs and report errors

SYNOPSIS

       #include <libexplain/getgroups.h>
       void explain_getgroups_or_die(int data_size, gid_t *data);
       int explain_getgroups_on_error(int data_size, gid_t *data);

DESCRIPTION

       The  explain_getgroups_or_die  function	is used to call the getgroups(2) system call. On failure an explanation will be printed to stderr,
       obtained from the explain_getgroups(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_getgroups_on_error function is used to call the getgroups(2) system call. On failure an explanation will be printed to  stderr,
       obtained from the explain_getgroups(3) function, but still returns to the caller.

       data_size
	       The data_size, exactly as to be passed to the getgroups(2) system call.

       data    The data, exactly as to be passed to the getgroups(2) system call.

RETURN VALUE

       The explain_getgroups_or_die function only returns on success, see getgroups(2) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_getgroups_on_error function always returns the value return by the wrapped getgroups(2) system call.

EXAMPLE

       The explain_getgroups_or_die function is intended to be used in a fashion similar to the following example:
	      explain_getgroups_or_die(data_size, data);

SEE ALSO

       getgroups(2)
	       get/set list of supplementary group IDs

       explain_getgroups(3)
	       explain getgroups(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

														       explain_getgroups_or_die(3)

explain_pwrite_or_die(3)				     Library Functions Manual					  explain_pwrite_or_die(3)

NAME

       explain_pwrite_or_die - seek and write to a file descriptor and report errors

SYNOPSIS

       #include <libexplain/pwrite.h>
       ssize_t explain_pwrite_or_die(int fildes, const void *data, size_t data_size, off_t offset);
       ssize_t explain_pwrite_on_error(int fildes, const void *data, size_t data_size, off_t offset))

DESCRIPTION

       The explain_pwrite_or_die function is used to call the pwrite(2) system call. On failure an explanation will be printed to stderr, obtained
       from the explain_pwrite(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_pwrite_on_error function is used to call the pwrite(2) system call. On failure  an  explanation  will  be  printed  to  stderr,
       obtained from the explain_pwrite(3) function, but still returns to the caller.

       fildes  The fildes, exactly as to be passed to the pwrite(2) system call.

       data    The data, exactly as to be passed to the pwrite(2) system call.

       data_size
	       The data_size, exactly as to be passed to the pwrite(2) system call.

       offset  The offset, exactly as to be passed to the pwrite(2) system call.

RETURN VALUE

       The  explain_pwrite_or_die  function  only  returns  on	success, see pwrite(2) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_pwrite_on_error function always returns the value return by the wrapped pwrite(2) system call.

EXAMPLE

       The explain_pwrite_or_die function is intended to be used in a fashion similar to the following example:
	      ssize_t result = explain_pwrite_or_die(fildes, data, data_size, offset);

SEE ALSO

       pwrite(2)
	       read from or write to a file descriptor at a given offset

       explain_pwrite(3)
	       explain pwrite(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															  explain_pwrite_or_die(3)