| commit | 2864d83feaac090865acb9c147c17d9793ef53dc | |
| author | H. Peter Anvin <hpa@zytor.com> | |
| Fri, 13 May 2011 02:16:17 +0000 (12 19:16 -0700) | ||
| committer | H. Peter Anvin <hpa@zytor.com> | |
| Fri, 13 May 2011 02:16:17 +0000 (12 19:16 -0700) | ||
| tree | 4fd454ca00003dbf8388e6b5b88bb31f603f6bd3 | treesnapshot (tar.gz zip) |
| parent | 05ffcecaa8bbaedc81b42ea240f34f2ad0b5f126 | commitdiff |
tftpd: try to handle duplicate WRQ packets
Duplicate WRQ packets can really hurt, since they end up accessing the
same file. This attempts to lock the file, which should work for the
case where a correctly implemented TFTP stack uses the same session ID
(port number) for each retry; in any other case they look like
multiple sessions to the same file and it is a crapshoot if we end up
with the correct one.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Duplicate WRQ packets can really hurt, since they end up accessing the
same file. This attempts to lock the file, which should work for the
case where a correctly implemented TFTP stack uses the same session ID
(port number) for each retry; in any other case they look like
multiple sessions to the same file and it is a crapshoot if we end up
with the correct one.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| configure.in | diffblobblamehistory | |
| tftpd/tftpd.c | diffblobblamehistory |