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Robin Farine writes:

Browse Source 
Hi,

Package: BusyBox
Version: 1.0.0-pre10

When an incomplete read or write from/to a local file occurs (i.e.
not an EOF condition), the tftp client prematurely exits. This
problem can be reproduced by slowly piping data to the tftp client
like this:

  (for v in 1 2 3; do echo $v; sleep 1; done) | \
  tftp -p -l - -r output.txt <host>

The output file on the TFTP server will contain "1".

The attached patch provides a possible solution to this problem.

I can reproduce this on ARM sa1110 and ARM xscale boards, both
running Linux-2.6.4 & glibc-2.3.2. Thanks for the wonderful
program!

Robin
This commit is contained in:
Eric Andersen 2004-06-22 10:18:30 +00:00
parent 7f94a5caa2
commit 4872ed9737
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
networking/tftp.c
View File

@ -267,7 +267,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
block_nr++;
if (cmd_put && (opcode == TFTP_DATA)) {
len = read(localfd, cp, tftp_bufsize - 4);
len = bb_full_read(localfd, cp, tftp_bufsize - 4);
if (len < 0) {
bb_perror_msg("read");
@ -444,7 +444,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
if (tmp == block_nr) {
len = write(localfd, &buf[4], len - 4);
len = bb_full_write(localfd, &buf[4], len - 4);
if (len < 0) {
bb_perror_msg("write");