NAME

       genders_testattr - test if a node has an attribute

SYNOPSIS

       #include <genders.h>

       int  genders_testattr(genders_t handle, const char *node, const char *attr, char *val, int
       len);

       int genders_testattrval(genders_t handle, const char *node, const char *attr,  const  char
       *val);

DESCRIPTION

       genders_testattr()  tests if the node pointed to by node contains the attribute pointed to
       by attr.  If node is NULL, the current node is tested.  If the  attribute  is  found,  its
       value  is  stored  in the buffer pointed to by val.  len should indicate the length of the
       buffer.  If the attribute value is not needed, val can be set to NULL.

       To avoid passing in an attribute value buffer that  is  not  large  enough  to  store  the
       attribute  value,  genders_getmaxvallen(3)  should be used to determine the minimum buffer
       size that should be used.

       genders_testattrval() tests if the node pointed to by node contains the attribute  pointed
       to  by  attr  and if that attribute is equal to the attribute value pointed to by val.  If
       val is NULL, only the attribute is tested.

RETURN VALUES

       For genders_testattr(), if the node contains the attribute, 1 is returned.  0 is  returned
       if the node does not contain the attribute.

       For  genders_testattrval(),  if  the  node  contains  the attribute and it is equal to the
       attribute value, 1 is returned.  0 is returned if the node does not contain the attribute,
       or if the attribute is not equal to the attribute value.

       For  both  genders_testattr()  and  genders_testattrval(), -1 is returned on error, and an
       error code is returned in handle.  The error code can be retrieved via genders_errnum(3) ,
       and a description of the error code can be retrieved via genders_strerror(3).  Error codes
       are defined in genders.h.

ERRORS

       GENDERS_ERR_NULLHANDLE
              The  handle  parameter  is  NULL.   The  genders  handle  must  be   created   with
              genders_handle_create(3).

       GENDERS_ERR_NOTLOADED
              genders_load_data(3) has not been called to load genders data.

       GENDERS_ERR_OVERFLOW
              The buffer pointed to by val is not large enough to store the attribute value.

       GENDERS_ERR_PARAMETERS
              An incorrect parameter has been passed in.

       GENDERS_ERR_NOTFOUND
              The  node  pointed  to by node cannot be found in the genders file or if node=NULL,
              the machine genders is running on is not listed in the genders database.

       GENDERS_ERR_MAGIC
              handle has an incorrect magic number.  handle does not point to a genders handle or
              handle has been destroyed by genders_handle_destroy(3).

FILES

       /usr/include/genders.h

SEE ALSO

       libgenders(3),  genders_handle_create(3),  genders_load_data(3),  genders_getmaxvallen(3),
       genders_errnum(3), genders_strerror(3)