tftpd failure

[Peter Naulls <peter@erble.freeserve.co.uk>]

As prevoiusly mentioned, tftpd (and presumably tftp too) fails on ARM,
truncating the first two letters from the filename.  Futher
investigation reveals the problem:

(tftp.h)


struct  tftphdr {
        short   th_opcode;                      /* packet type */
        union {
                unsigned short  tu_block;       /* block # */
                short   tu_code;                /* error code */
                char    tu_stuff[1];            /* request packet stuff */
        } __attribute__ ((__packed__)) th_u;
        char    th_data[1];                     /* data or error string */
} __attribute__ ((__packed__));


This seems ok, unfortunately:

offsetof(struct tftphdr, th_u.tu_stuff) returns 4 - revealing why the
filename (in tu_stuff) has lost the first two letters.

Which unless someone knows better, seems to indicate a compiler bug.

gcc version 2.95.3 20010125 (prerelease)


Peter

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 Peter Naulls - peter@erble.freeserve.co.uk
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