Doc on error messages

[Thomas Garsiot]

Here are the details of the code you requested :

actually this is some code extracted from UCD-SNMP :

struct sockaddr_in *pduIp;
struct snmp_pdu *template_pdu;


pduIp = (struct sockaddr_in *)&(template_pdu->agent_addr);
pduIp->sin_family   = AF_INET;



----------------------------------
type definitions :
#define _UCD_SS_MAXSIZE   92  /* <= sizeof( sockaddr_un ) */
#define _UCD_SS_ALIGNSIZE (sizeof (long))

#define _UCD_SS_PAD1SIZE  (_UCD_SS_ALIGNSIZE - sizeof( unsigned short ))
#define _UCD_SS_PAD2SIZE  (_UCD_SS_MAXSIZE - \
  (sizeof( unsigned short ) + _UCD_SS_PAD1SIZE + _UCD_SS_ALIGNSIZE ))
typedef struct {
    unsigned char sa_len;
    unsigned char sa_family;

    char  sa_data[ _UCD_SS_PAD1SIZE ];
    long  sa_align;
    char  sa_pad2[ _UCD_SS_PAD2SIZE ];

} snmp_ipaddr;

struct snmp_pdu {
[...]
    snmp_ipaddr agent_addr;
[...]
 };


-----------------
/*
 * Socket address, internet style.
 */
struct sockaddr_in {
 u_char sin_len;
 u_char sin_family;
 u_short sin_port;
 struct in_addr sin_addr;
 char sin_zero[8];
};
struct in_addr {
 u_long s_addr;
};

I tried to include only the useful part.  Sorry if it's a little messy.

Thanks in advance for your help.

Cheers,

    Thomas