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-rw-r--r--source3/smbd/fileio.c61
1 files changed, 39 insertions, 22 deletions
diff --git a/source3/smbd/fileio.c b/source3/smbd/fileio.c
index edf58d4a8e..38da96b741 100644
--- a/source3/smbd/fileio.c
+++ b/source3/smbd/fileio.c
@@ -91,34 +91,51 @@ read from a file
ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
{
- ssize_t ret=0,readret;
+ ssize_t ret=0,readret;
- /* you can't read from print files */
- if (fsp->print_file) {
- return -1;
- }
+ /* you can't read from print files */
+ if (fsp->print_file)
+ return -1;
- /*
- * Serve from write cache if we can.
- */
- if(read_from_write_cache(fsp, data, pos, n))
- return n;
+ /*
+ * Serve from write cache if we can.
+ */
- flush_write_cache(fsp, READ_FLUSH);
+ if(read_from_write_cache(fsp, data, pos, n))
+ return n;
- if (seek_file(fsp,pos) == -1) {
- DEBUG(3,("read_file: Failed to seek to %.0f\n",(double)pos));
- return(ret);
- }
+ flush_write_cache(fsp, READ_FLUSH);
+
+ if (seek_file(fsp,pos) == -1) {
+ DEBUG(3,("read_file: Failed to seek to %.0f\n",(double)pos));
+ return(ret);
+ }
- if (n > 0) {
- readret = fsp->conn->vfs_ops.read(fsp,fsp->fd,data,n);
- if (readret == -1)
- return -1;
- if (readret > 0) ret += readret;
- }
+ if (n > 0) {
+#ifdef DMF_FIX
+ int numretries = 3;
+tryagain:
+ readret = fsp->conn->vfs_ops.read(fsp,fsp->fd,data,n);
+ 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 = fsp->conn->vfs_ops.read(fsp,fsp->fd,data,n);
+ if (readret == -1)
+ return -1;
+#endif
+
+ if (readret > 0)
+ ret += readret;
+ }
- return(ret);
+ return(ret);
}
/* how many write cache buffers have been allocated */