Using dwarf_init_path()

Example of a libdwarf initialization call.

An example calling dwarf_init_path() and dwarf_finish()

Parameters

path	Path to an object we wish to open.
groupnumber	Desired groupnumber. Use DW_DW_GROUPNUMBER_ANY unless you have reason to do otherwise.

Returns

Returns the applicable result. DW_DLV_OK etc.

*/
int exampleinit(const char *path, unsigned groupnumber)
{
    static char true_pathbuf[FILENAME_MAX];
    unsigned tpathlen = FILENAME_MAX;
    Dwarf_Handler errhand = 0;
    Dwarf_Ptr errarg = 0;
    Dwarf_Error error = 0;
    Dwarf_Debug dbg = 0;
    int res = 0;
 
    res = dwarf_init_path(path,true_pathbuf,
        tpathlen,groupnumber,errhand,
        errarg,&dbg, &error);
    if (res == DW_DLV_ERROR) {
        /*  Necessary call even though dbg is null!
            This avoids a memory leak.  */
        dwarf_dealloc_error(dbg,error);
        return res;
    }
    if (res == DW_DLV_NO_ENTRY) {
        /*  Nothing we can do */
        return res;
    }
    printf("The file we actually opened is %s\n",
        true_pathbuf);
    /* Call libdwarf functions here */
    dwarf_finish(dbg);
    return DW_DLV_OK;
}