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authorVolker Lendecke <vlendec@samba.org>2007-08-12 11:22:26 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:29:31 -0500
commit6dcf0c64cfcf905e55e46b423d8e153918da862c (patch)
treee78ff30184b895e4351c73844448f3e5be035723 /source3/smbd
parentd198962d14d417bf191ce45ad8e9034bc943a865 (diff)
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r24347: fake_sendfile does not need Inbuf/Outbuf
In the future, we might put the new Linux splice(2) syscall here. This should also work for reply_write, but getting that in is a bit trickier. We need to decide very early before fetching the whole buffer that we have a write call. (This used to be commit 32921c878a7f60251a9217173951065784077077)
Diffstat (limited to 'source3/smbd')
-rw-r--r--source3/smbd/reply.c30
1 files changed, 23 insertions, 7 deletions
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 93e2aaf0be..9119ec1e0b 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -2333,9 +2333,22 @@ static void fail_readraw(void)
Fake (read/write) sendfile. Returns -1 on read or write fail.
****************************************************************************/
-static ssize_t fake_sendfile(files_struct *fsp, SMB_OFF_T startpos, size_t nread, char *buf, size_t bufsize)
+static ssize_t fake_sendfile(files_struct *fsp, SMB_OFF_T startpos,
+ size_t nread)
{
+ size_t bufsize;
size_t tosend = nread;
+ char *buf;
+
+ if (nread == 0) {
+ return 0;
+ }
+
+ bufsize = MIN(nread, 65536);
+
+ if (!(buf = SMB_MALLOC_ARRAY(char, bufsize))) {
+ return -1;
+ }
while (tosend > 0) {
ssize_t ret;
@@ -2348,6 +2361,7 @@ static ssize_t fake_sendfile(files_struct *fsp, SMB_OFF_T startpos, size_t nread
}
ret = read_file(fsp,buf,startpos,cur_read);
if (ret == -1) {
+ SAFE_FREE(buf);
return -1;
}
@@ -2357,12 +2371,14 @@ static ssize_t fake_sendfile(files_struct *fsp, SMB_OFF_T startpos, size_t nread
}
if (write_data(smbd_server_fd(),buf,cur_read) != cur_read) {
+ SAFE_FREE(buf);
return -1;
}
tosend -= cur_read;
startpos += cur_read;
}
+ SAFE_FREE(buf);
return (ssize_t)nread;
}
@@ -2408,7 +2424,7 @@ void send_file_readbraw(connection_struct *conn, files_struct *fsp, SMB_OFF_T st
set_use_sendfile(SNUM(conn), False);
DEBUG(0,("send_file_readbraw: sendfile not available. Faking..\n"));
- if (fake_sendfile(fsp, startpos, nread, outbuf + 4, out_buffsize - 4) == -1) {
+ if (fake_sendfile(fsp, startpos, nread) == -1) {
DEBUG(0,("send_file_readbraw: fake_sendfile failed for file %s (%s).\n",
fsp->fsp_name, strerror(errno) ));
exit_server_cleanly("send_file_readbraw fake_sendfile failed");
@@ -2806,9 +2822,9 @@ static void send_file_readX(connection_struct *conn, struct smb_request *req,
/* Ensure we don't do this again. */
set_use_sendfile(SNUM(conn), False);
DEBUG(0,("send_file_readX: sendfile not available. Faking..\n"));
-
- if ((nread = fake_sendfile(fsp, startpos, smb_maxcnt, data,
- len_outbuf - (data-outbuf))) == -1) {
+ nread = fake_sendfile(fsp, startpos,
+ smb_maxcnt);
+ if (nread == -1) {
DEBUG(0,("send_file_readX: fake_sendfile failed for file %s (%s).\n",
fsp->fsp_name, strerror(errno) ));
exit_server_cleanly("send_file_readX: fake_sendfile failed");
@@ -2844,8 +2860,8 @@ normal_read:
fsp->fsp_name, strerror(errno) ));
exit_server_cleanly("send_file_readX sendfile failed");
}
- if ((nread = fake_sendfile(fsp, startpos, smb_maxcnt, data,
- len_outbuf - (data-outbuf))) == -1) {
+ nread = fake_sendfile(fsp, startpos, smb_maxcnt);
+ if (nread == -1) {
DEBUG(0,("send_file_readX: fake_sendfile failed for file %s (%s).\n",
fsp->fsp_name, strerror(errno) ));
exit_server_cleanly("send_file_readX: fake_sendfile failed");