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Add new parameter, "min receivefile size" (by default set

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to zero). If non-zero, writeX calls greater than this
value will be left in the socket buffer for later handling
with recvfile (or userspace equivalent). Definition of
recvfile for your system is left as an exercise for
the reader (I'm working on getting splice working :-).
Jeremy.
This commit is contained in:
Jeremy Allison
2007-10-30 16:22:24 -07:00
parent 765b37c693
commit 11c03b75dd
11 changed files with 527 additions and 160 deletions
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106
source/lib/util_sock.c
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@@ -1113,7 +1113,7 @@ bool send_keepalive(int client)
Timeout is in milliseconds.
****************************************************************************/
static ssize_t read_smb_length_return_keepalive(int fd,
ssize_t read_smb_length_return_keepalive(int fd,
char *inbuf,
unsigned int timeout)
{
@@ -1260,86 +1260,6 @@ ssize_t receive_smb_raw(int fd,
return len;
}
static ssize_t receive_smb_raw_talloc(TALLOC_CTX *mem_ctx, int fd,
char **buffer, unsigned int timeout)
{
char lenbuf[4];
ssize_t len,ret;
smb_read_error = 0;
len = read_smb_length_return_keepalive(fd, lenbuf, timeout);
if (len < 0) {
DEBUG(10,("receive_smb_raw: length < 0!\n"));
/*
* Correct fix. smb_read_error may have already been
* set. Only set it here if not already set. Global
* variables still suck :-). JRA.
*/
if (smb_read_error == 0)
smb_read_error = READ_ERROR;
return -1;
}
/*
* A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
* of header. Don't print the error if this fits.... JRA.
*/
if (len > (BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE)) {
DEBUG(0,("Invalid packet length! (%lu bytes).\n",
(unsigned long)len));
if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
/*
* Correct fix. smb_read_error may have already been
* set. Only set it here if not already set. Global
* variables still suck :-). JRA.
*/
if (smb_read_error == 0)
smb_read_error = READ_ERROR;
return -1;
}
}
/*
* The +4 here can't wrap, we've checked the length above already.
*/
*buffer = TALLOC_ARRAY(mem_ctx, char, len+4);
if (*buffer == NULL) {
DEBUG(0, ("Could not allocate inbuf of length %d\n",
(int)len+4));
if (smb_read_error == 0)
smb_read_error = READ_ERROR;
return -1;
}
memcpy(*buffer, lenbuf, sizeof(lenbuf));
if(len > 0) {
if (timeout > 0) {
ret = read_socket_with_timeout(fd,(*buffer)+4, len,
len, timeout);
} else {
ret = read_data(fd, (*buffer)+4, len);
}
if (ret != len) {
if (smb_read_error == 0) {
smb_read_error = READ_ERROR;
}
return -1;
}
}
return len + 4;
}
/****************************************************************************
Wrapper for receive_smb_raw().
Checks the MAC on signed packets.
@@ -1364,30 +1284,6 @@ bool receive_smb(int fd, char *buffer, unsigned int timeout)
return true;
}
ssize_t receive_smb_talloc(TALLOC_CTX *mem_ctx, int fd, char **buffer,
unsigned int timeout)
{
ssize_t len;
len = receive_smb_raw_talloc(mem_ctx, fd, buffer, timeout);
if (len < 0) {
return -1;
}
/* Check the incoming SMB signature. */
if (!srv_check_sign_mac(*buffer, true)) {
DEBUG(0, ("receive_smb: SMB Signature verification failed on "
"incoming packet!\n"));
if (smb_read_error == 0) {
smb_read_error = READ_BAD_SIG;
}
return -1;
}
return len;
}
/****************************************************************************
Send an smb to a fd.
****************************************************************************/