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-rw-r--r--source3/libsmb/clireadwrite.c89
1 files changed, 88 insertions, 1 deletions
diff --git a/source3/libsmb/clireadwrite.c b/source3/libsmb/clireadwrite.c
index f6ee78c567..6566acf4ef 100644
--- a/source3/libsmb/clireadwrite.c
+++ b/source3/libsmb/clireadwrite.c
@@ -24,7 +24,7 @@
#include "includes.h"
/****************************************************************************
-issue a single SMBread and don't wait for a reply
+Issue a single SMBread and don't wait for a reply.
****************************************************************************/
static BOOL cli_issue_read(struct cli_state *cli, int fnum, off_t offset,
@@ -50,6 +50,31 @@ static BOOL cli_issue_read(struct cli_state *cli, int fnum, off_t offset,
}
/****************************************************************************
+Issue a single SMBreadraw and don't wait for a reply.
+****************************************************************************/
+
+static BOOL cli_issue_readraw(struct cli_state *cli, int fnum, off_t offset,
+ size_t size, int i)
+{
+ memset(cli->outbuf,'\0',smb_size);
+ memset(cli->inbuf,'\0',smb_size);
+
+ set_message(cli->outbuf,10,0,True);
+
+ CVAL(cli->outbuf,smb_com) = SMBreadbraw;
+ SSVAL(cli->outbuf,smb_tid,cli->cnum);
+ cli_setup_packet(cli);
+
+ SSVAL(cli->outbuf,smb_vwv0,fnum);
+ SIVAL(cli->outbuf,smb_vwv1,offset);
+ SSVAL(cli->outbuf,smb_vwv2,size);
+ SSVAL(cli->outbuf,smb_vwv3,size);
+ SSVAL(cli->outbuf,smb_mid,cli->mid + i);
+
+ return cli_send_smb(cli);
+}
+
+/****************************************************************************
Read size bytes at offset offset using SMBreadX.
****************************************************************************/
@@ -128,6 +153,68 @@ ssize_t cli_read(struct cli_state *cli, int fnum, char *buf, off_t offset, size_
}
/****************************************************************************
+ Tester for the readraw call.
+****************************************************************************/
+
+ssize_t cli_readraw(struct cli_state *cli, int fnum, char *buf, off_t offset, size_t size)
+{
+ char *p;
+ int size2;
+ size_t readsize;
+ ssize_t total = 0;
+
+ if (size == 0)
+ return 0;
+
+ /*
+ * Set readsize to the maximum size we can handle in one readraw.
+ */
+
+ readsize = 0xFFFF;
+
+ while (total < size) {
+ readsize = MIN(readsize, size-total);
+
+ /* Issue a read and receive a reply */
+
+ if (!cli_issue_readraw(cli, fnum, offset, readsize, 0))
+ return -1;
+
+ if (!client_receive_smb(cli->fd, cli->inbuf, cli->timeout))
+ return -1;
+
+ size2 = smb_len(cli->inbuf);
+
+ if (size2 > readsize) {
+ DEBUG(5,("server returned more than we wanted!\n"));
+ return -1;
+ } else if (size2 < 0) {
+ DEBUG(5,("read return < 0!\n"));
+ return -1;
+ }
+
+ /* Copy data into buffer */
+
+ if (size2) {
+ p = cli->inbuf + 4;
+ memcpy(buf + total, p, size2);
+ }
+
+ total += size2;
+ offset += size2;
+
+ /*
+ * If the server returned less than we asked for we're at EOF.
+ */
+
+ if (size2 < readsize)
+ break;
+ }
+
+ return total;
+}
+
+/****************************************************************************
issue a single SMBwrite and don't wait for a reply
****************************************************************************/