read() help

[Dave13]

Hi there

Below is a small bit of test code for a project im working on, eventually the programs going to be a simple file transfer system, reading a file and then sending it out of a socket, but for now I cant get any files to open. I've been pouring over it for hours and I can't find up whats going wrong, the files there and has data in, but all the read() will return is -1 with a stderr message of Bad File Descriptor, but i just cant figure it out.

Any help would be massively appreciated

Thank you

Dave

#include <stdio.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

#define RCVBUFSIZE 2048

int main(int argc, char** argv)
{
FILE *iput_ptr;
char rcvBuffer[RCVBUFSIZE];
char fileName[8];
int nRead;

strcpy(fileName , "test.txt") ;
memset(rcvBuffe r,0,RCVBUFSIZE) ; // Zero out Receive Buffer
printf("%s", fileName);
iput_ptr = fopen(fileName, "r");
if(iput_ptr != NULL)
{
do
{
printf("pre read");
nRead = read(iput_ptr, rcvBuffer, RCVBUFSIZE-1);
printf("%i", nRead);

}
while (nRead > 0);
}
return 0;
}

[weaknessforcats]

Your code works for me. I just used an fread() instead of your read().

I did have to make some changes, however. Your fileName array is 8 but "test.txt" is 9. It's the old null terminator again.

[Dave13]

Converted it to fread() and its working a treat!! Thank you!!