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Merge "adbd: split up writes longer than 16k."

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Josh Gao 2015-12-03 22:50:11 +00:00 committed by Gerrit Code Review
commit 1c6cd21c43
1 changed files with 23 additions and 39 deletions
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62
adb/usb_linux_client.cpp
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@ -456,56 +456,40 @@ static void *usb_ffs_open_thread(void *x)
return 0;
}
static int bulk_write(int bulk_in, const uint8_t* buf, size_t length)
{
size_t count = 0;
while (count < length) {
int ret = adb_write(bulk_in, buf + count, length - count);
if (ret < 0) return -1;
count += ret;
}
D("[ bulk_write done fd=%d ]", bulk_in);
return count;
}
static int usb_ffs_write(usb_handle* h, const void* data, int len)
{
static int usb_ffs_write(usb_handle* h, const void* data, int len) {
D("about to write (fd=%d, len=%d)", h->bulk_in, len);
int n = bulk_write(h->bulk_in, reinterpret_cast<const uint8_t*>(data), len);
if (n != len) {
D("ERROR: fd = %d, n = %d: %s", h->bulk_in, n, strerror(errno));
return -1;
// Writes larger than 16k fail on some devices (seed with 3.10.49-g209ea2f in particular).
const char* buf = static_cast<const char*>(data);
while (len > 0) {
int write_len = (len > 16384) ? 16384 : len;
int n = adb_write(h->bulk_in, buf, write_len);
if (n < 0) {
D("ERROR: fd = %d, n = %d: %s", h->bulk_in, n, strerror(errno));
return -1;
}
buf += n;
len -= n;
}
D("[ done fd=%d ]", h->bulk_in);
return 0;
}
static int bulk_read(int bulk_out, uint8_t* buf, size_t length)
{
size_t count = 0;
static int usb_ffs_read(usb_handle* h, void* data, int len) {
D("about to read (fd=%d, len=%d)", h->bulk_out, len);
while (count < length) {
int ret = adb_read(bulk_out, buf + count, length - count);
if (ret < 0) {
D("[ bulk_read failed fd=%d length=%zu count=%zu ]", bulk_out, length, count);
char* buf = static_cast<char*>(data);
while (len > 0) {
int n = adb_read(h->bulk_out, buf, len);
if (n < 0) {
D("ERROR: fd = %d, n = %d: %s", h->bulk_out, n, strerror(errno));
return -1;
}
count += ret;
buf += n;
len -= n;
}
return count;
}
static int usb_ffs_read(usb_handle* h, void* data, int len)
{
D("about to read (fd=%d, len=%d)", h->bulk_out, len);
int n = bulk_read(h->bulk_out, reinterpret_cast<uint8_t*>(data), len);
if (n != len) {
D("ERROR: fd = %d, n = %d: %s", h->bulk_out, n, strerror(errno));
return -1;
}
D("[ done fd=%d ]", h->bulk_out);
return 0;
}