Re: [ILUG-BOM] read PROBLEM [ code ]

Sometime Today, Devdas Bhagat assembled some asciibets to say:

/*

• The OP should tell us why he/she is using read and write instead of
• fread and fwrite, or perhaps rename to move the file instead

*/

irrelevant. fread/fwrite won't work on file descriptors. They require FILE pointers. open/creat/socket return file descriptors.

while (fd) {

and who sets fd to 0?

if (n < sizeof(buff)) { /* Short read, eof? */

this is a short read. it does not mean eof. eof is signalled by a return value of 0. n < requested size just means that fewer bytes than requested were available at the time.

close_check = close(fd);	/* Close file */

don't close here. close only if n == 0. If n < 0, check for errno of EINTR or EAGAIN, and redo the read.

Philip