ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
{
ssize_t ret=0,readret;
/* you can't read from print files */
if (fsp->print_file) {
errno = EBADF;
return -1;
}
/*
* Serve from write cache if we can.
*/
if(read_from_write_cache(fsp, data, pos, n)) {
fsp->fh->pos = pos + n;
fsp->fh->position_information = fsp->fh->pos;
return n;
}
flush_write_cache(fsp, READ_FLUSH);
fsp->fh->pos = pos;
if (n > 0) {
#ifdef DMF_FIX
int numretries = 3;
tryagain:
readret = SMB_VFS_PREAD(fsp,data,n,pos);
if (readret == -1) {
if ((errno == EAGAIN) && numretries) {
DEBUG(3,("read_file EAGAIN retry in 10 seconds\n"));
(void)sleep(10);
--numretries;
goto tryagain;
}
return -1;
}
#else /* NO DMF fix. */
readret = SMB_VFS_PREAD(fsp,data,n,pos);
if (readret == -1) {
return -1;
}
#endif
if (readret > 0) {
ret += readret;
}
}
DEBUG(10,("read_file (%s): pos = %.0f, size = %lu, returned %lu\n",
fsp_str_dbg(fsp), (double)pos, (unsigned long)n, (long)ret));
fsp->fh->pos += ret;
fsp->fh->position_information = fsp->fh->pos;
return(ret);
}
ssize_t read_file(files_struct *fsp,char *data,off_t pos,size_t n)
{
ssize_t ret = 0;
/* you can't read from print files */
if (fsp->print_file) {
errno = EBADF;
return -1;
}
/*
* Serve from write cache if we can.
*/
if(read_from_write_cache(fsp, data, pos, n)) {
fsp->fh->pos = pos + n;
fsp->fh->position_information = fsp->fh->pos;
return n;
}
flush_write_cache(fsp, READ_FLUSH);
fsp->fh->pos = pos;
if (n > 0) {
ret = SMB_VFS_PREAD(fsp,data,n,pos);
if (ret == -1) {
return -1;
}
}
DEBUG(10,("read_file (%s): pos = %.0f, size = %lu, returned %lu\n",
fsp_str_dbg(fsp), (double)pos, (unsigned long)n, (long)ret));
fsp->fh->pos += ret;
fsp->fh->position_information = fsp->fh->pos;
return(ret);
}
