static void
process_read(void)
{
char buf[64*1024];
u_int32_t id, len;
int handle, fd, ret, status = SSH2_FX_FAILURE;
u_int64_t off;
id = get_int();
handle = get_handle();
off = get_int64();
len = get_int();
debug("request %u: read \"%s\" (handle %d) off %llu len %d",
id, handle_to_name(handle), handle, (unsigned long long)off, len);
if (len > sizeof buf) {
len = sizeof buf;
debug2("read change len %d", len);
}
fd = handle_to_fd(handle);
if (fd >= 0) {
if (lseek(fd, off, SEEK_SET) < 0) {
error("process_read: seek failed");
status = errno_to_portable(errno);
} else {
ret = read(fd, buf, len);
if (ret < 0) {
status = errno_to_portable(errno);
} else if (ret == 0) {
status = SSH2_FX_EOF;
} else {
send_data(id, buf, ret);
status = SSH2_FX_OK;
handle_update_read(handle, ret);
}
}
}
if (status != SSH2_FX_OK)
send_status(id, status);
}
static void
process_read(u_int32_t id)
{
u_char buf[64*1024];
u_int32_t len;
int r, handle, fd, ret, status = SSH2_FX_FAILURE;
u_int64_t off;
if ((r = get_handle(iqueue, &handle)) != 0 ||
(r = sshbuf_get_u64(iqueue, &off)) != 0 ||
(r = sshbuf_get_u32(iqueue, &len)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
debug("request %u: read \"%s\" (handle %d) off %llu len %d",
id, handle_to_name(handle), handle, (unsigned long long)off, len);
if (len > sizeof buf) {
len = sizeof buf;
debug2("read change len %d", len);
}
fd = handle_to_fd(handle);
if (fd >= 0) {
if (lseek(fd, off, SEEK_SET) < 0) {
error("process_read: seek failed");
status = errno_to_portable(errno);
} else {
ret = read(fd, buf, len);
if (ret < 0) {
status = errno_to_portable(errno);
} else if (ret == 0) {
status = SSH2_FX_EOF;
} else {
send_data(id, buf, ret);
status = SSH2_FX_OK;
handle_update_read(handle, ret);
}
}
}
if (status != SSH2_FX_OK)
send_status(id, status);
}
void SFTP::process_read(void)
{
char buf[64*1024];
u_int32_t id, len;
int handle, status = SSH2_FX_FAILURE;
u_int64_t off;
id = get_int();
handle = get_handle();
off = get_int64();
len = get_int();
#ifdef SLOW_DEBUG
debug("request %u: read \"%s\" (handle %d) off %llu len %d",
id, toUTF8(handle_to_name(handle)).c_str (),
handle, (unsigned long long)off, len);
#endif
if (len > sizeof buf) {
len = sizeof buf;
debug2("read change len %d", len);
}
HANDLE fh = handle_to_fh(handle);
if (fh != INVALID_HANDLE_VALUE) {
LARGE_INTEGER largeOffset;
largeOffset.QuadPart = off;
if (!::SetFilePointerEx
(fh, largeOffset, NULL, FILE_BEGIN))
{
int err = ::GetLastError ();
if (!err)
status = SSH2_FX_EOF;
else
{
error("process_read: seek failed");
status = errno_to_portable(err);
}
}
else
{
DWORD nBytesRed = 0;
if (!::ReadFile (fh, buf, len, &nBytesRed, 0))
{
status = errno_to_portable(::GetLastError ());
}
else if (nBytesRed == 0)
{
status = SSH2_FX_EOF;
}
else
{
if (nBytesRed < len)
debug ("process_read: requested %u, "
"%u was red",
(unsigned) len,
(unsigned) nBytesRed);
send_data(id, buf, (u_int) nBytesRed);
status = SSH2_FX_OK;
handle_update_read(handle, (u_int) nBytesRed);
}
}
}
if (status != SSH2_FX_OK)
send_status(id, status);
}