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Oops.. sendfile() was not keeping track of the number bytes transferred or handling partial writes correctly. 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5091 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2012-09-05 01:59:54 +00:00
parent fb06dd2182
commit bdd2c5b288
1 changed files with 18 additions and 4 deletions
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22
nuttx/lib/misc/lib_sendfile.c
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@ -114,6 +114,7 @@
ssize_t sendfile(int outfd, int infd, off_t *offset, size_t count)
{
FAR uint8_t *iobuffer;
FAR uint8_t *wrbuffer;
off_t startpos = 0;
ssize_t nbytesread;
ssize_t nbyteswritten;
@ -205,18 +206,31 @@ ssize_t sendfile(int outfd, int infd, off_t *offset, size_t count)
* conclusion.
*/
wrbuffer = iobuffer;
do
{
nbyteswritten = write(outfd, iobuffer, nbytesread);
nbyteswritten = write(outfd, wrbuffer, nbytesread);
/* Check for a complete (or parial write) */
/* Check for a complete (or parial write). write() should not
* return zero.
*/
if (nbyteswritten >= 0)
{
nbytesread -= nbyteswritten;
/* Advance the buffer pointer and decrement the number of bytes
* remaining in the iobuffer. Typically, nbytesread will now
* be zero.
*/
wrbuffer += nbyteswritten;
nbytesread -= nbyteswritten;
/* Increment the total number of bytes successfully transferred. */
ntransferred += nbyteswritten;
}
/* Otherwise an error occurred (write should not return zero) */
/* Otherwise an error occurred */
else
{