op_deviceio.c

Go to the documentation of this file.

#include "op_deviceio.h"

#include <sys/types.h>
#include <fcntl.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

fd_t op_open_device(char const * name)
{
    return open(name, O_RDONLY);
}


ssize_t op_read_device(fd_t devfd, void * buf, size_t size)
{
    ssize_t count;

    lseek(devfd, 0, SEEK_SET);

    count = read(devfd, buf, size);

    if (count < 0 && errno != EINTR && errno != EAGAIN) {
        perror("oprofiled:op_read_device: ");
        exit(EXIT_FAILURE);
    }

    return count;
}