gd_add_alias(3) GETDATA gd_add_alias(3)NAME
gd_add_alias, gd_madd_alias — add a field to a dirfile
SYNOPSIS
#include <getdata.h>
int gd_add_alias(DIRFILE *dirfile, const char *alias_name, const char
*target_code, int fragment_index);
int gd_madd_alias(DIRFILE *dirfile, const char *parent, const char
*alias_name, const char *target_code);
DESCRIPTION
The gd_add_alias() function adds the alias named alias_name pointing to
target_code to the fragment indexed by fragment_index in the dirfile
specified by dirfile. The gd_madd_alias() function behaves similarly,
but adds the field as a meta-entry under the field indicated by the
field code parent.
RETURN VALUE
On success, gd_add_alias() and gd_madd_alias() return zero. On error,
-1 is returned and the dirfile error is set to a non-zero error value.
Possible error values are:
GD_E_ACCMODE
The specified dirfile was opened read-only.
GD_E_ALLOC
The library was unable to allocate memory.
GD_E_BAD_CODE
The alias_name contained invalid characters; or it or an input
field did not contain the affected fragment's prefix or suffix.
Alternately, the parent field code was not found, or was al‐
ready a metafield.
GD_E_BAD_DIRFILE
The supplied dirfile was invalid.
GD_E_BAD_INDEX
The fragment_index specified was out of range.
GD_E_DUPLICATE
The alias_name parameter duplicated that of an already existing
entry.
GD_E_PROTECTED
The metadata of the fragment was protected from change. Or,
the creation of a RAW field was attempted and the data of the
fragment was protected.
The dirfile error may be retrieved by calling gd_error(3). A descrip‐
tive error string for the last error encountered can be obtained from a
call to gd_error_string(3).
SEE ALSOgd_add(3), gd_alias_target(3), gd_entry(3), gd_madd(3),
gd_metaflush(3), gd_open(3), dirfile-format(5)Version 0.8.1 26 July 2012 gd_add_alias(3)
