/* fseek for buffered I/O handles */
int
stream_seek(StreamHandle_t * streamP, afs_foff_t offset, int whence)
{
int rc;
int retval = 0;
if (streamP->str_direction == STREAM_DIRECTION_WRITE
&& streamP->str_bufoff > 0) {
rc = OS_WRITE(streamP->str_fd, streamP->str_buffer,
streamP->str_bufoff);
if (rc < 0) {
streamP->str_error = errno;
retval = -1;
}
}
streamP->str_bufoff = 0;
streamP->str_buflen = 0;
streamP->str_eof = 0;
streamP->str_direction = STREAM_DIRECTION_NONE;
if (OS_SEEK(streamP->str_fd, offset, whence) < 0) {
streamP->str_error = errno;
retval = -1;
}
return retval;
}
ssize_t
ih_pwrite(int fd, const void * buf, size_t count, afs_foff_t offset)
{
afs_foff_t code;
code = OS_SEEK(fd, offset, 0);
if (code < 0)
return code;
return OS_WRITE(fd, buf, count);
}
ssize_t
ih_pread(int fd, void * buf, size_t count, afs_foff_t offset)
{
afs_foff_t code;
code = OS_SEEK(fd, offset, 0);
if (code < 0)
return code;
return OS_READ(fd, buf, count);
}