Samuel Thibault
2008-Jun-17 10:31 UTC
[Xen-devel] [PATCH] stubdom: fix using minios frontends directly when libc is actived
stubdom: fix using minios frontends directly when libc is actived
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
diff -r 4f7f01de4239 extras/mini-os/blkfront.c
--- a/extras/mini-os/blkfront.c Tue Jun 17 10:18:15 2008 +0100
+++ b/extras/mini-os/blkfront.c Tue Jun 17 11:32:05 2008 +0100
@@ -63,7 +63,8 @@
struct blkfront_dev *dev = data;
int fd = dev->fd;
- files[fd].read = 1;
+ if (fd != -1)
+ files[fd].read = 1;
#endif
wake_up(&blkfront_queue);
}
@@ -105,6 +106,9 @@
dev = malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
dev->nodename = strdup(nodename);
+#ifdef HAVE_LIBC
+ dev->fd = -1;
+#endif
snprintf(path, sizeof(path), "%s/backend-id", nodename);
dev->dom = xenbus_read_integer(path);
@@ -424,8 +428,10 @@
moretodo:
#ifdef HAVE_LIBC
- files[dev->fd].read = 0;
- mb(); /* Make sure to let the handler set read to 1 before we start looking
at the ring */
+ if (dev->fd != -1) {
+ files[dev->fd].read = 0;
+ mb(); /* Make sure to let the handler set read to 1 before we start
looking at the ring */
+ }
#endif
rp = dev->ring.sring->rsp_prod;
diff -r 4f7f01de4239 extras/mini-os/fbfront.c
--- a/extras/mini-os/fbfront.c Tue Jun 17 10:18:15 2008 +0100
+++ b/extras/mini-os/fbfront.c Tue Jun 17 11:32:05 2008 +0100
@@ -44,7 +44,8 @@
struct kbdfront_dev *dev = data;
int fd = dev->fd;
- files[fd].read = 1;
+ if (fd != -1)
+ files[fd].read = 1;
#endif
wake_up(&kbdfront_queue);
}
@@ -83,6 +84,9 @@
dev = malloc(sizeof(*dev));
dev->nodename = strdup(nodename);
+#ifdef HAVE_LIBC
+ dev->fd = -1;
+#endif
snprintf(path, sizeof(path), "%s/backend-id", nodename);
dev->dom = xenbus_read_integer(path);
@@ -179,8 +183,10 @@
int i;
#ifdef HAVE_LIBC
- files[dev->fd].read = 0;
- mb(); /* Make sure to let the handler set read to 1 before we start looking
at the ring */
+ if (dev->fd != -1) {
+ files[dev->fd].read = 0;
+ mb(); /* Make sure to let the handler set read to 1 before we start
looking at the ring */
+ }
#endif
prod = page->in_prod;
@@ -198,7 +204,7 @@
notify_remote_via_evtchn(dev->evtchn);
#ifdef HAVE_LIBC
- if (cons != prod)
+ if (cons != prod && dev->fd != -1)
/* still some events to read */
files[dev->fd].read = 1;
#endif
@@ -290,7 +296,8 @@
struct fbfront_dev *dev = data;
int fd = dev->fd;
- files[fd].read = 1;
+ if (fd != -1)
+ files[fd].read = 1;
#endif
wake_up(&fbfront_queue);
}
@@ -316,8 +323,10 @@
int i;
#ifdef HAVE_LIBC
- files[dev->fd].read = 0;
- mb(); /* Make sure to let the handler set read to 1 before we start looking
at the ring */
+ if (dev->fd != -1) {
+ files[dev->fd].read = 0;
+ mb(); /* Make sure to let the handler set read to 1 before we start
looking at the ring */
+ }
#endif
prod = page->in_prod;
@@ -335,7 +344,7 @@
notify_remote_via_evtchn(dev->evtchn);
#ifdef HAVE_LIBC
- if (cons != prod)
+ if (cons != prod && dev->fd != -1)
/* still some events to read */
files[dev->fd].read = 1;
#endif
@@ -363,6 +372,9 @@
dev = malloc(sizeof(*dev));
dev->nodename = strdup(nodename);
+#ifdef HAVE_LIBC
+ dev->fd = -1;
+#endif
snprintf(path, sizeof(path), "%s/backend-id", nodename);
dev->dom = xenbus_read_integer(path);
diff -r 4f7f01de4239 extras/mini-os/netfront.c
--- a/extras/mini-os/netfront.c Tue Jun 17 10:18:15 2008 +0100
+++ b/extras/mini-os/netfront.c Tue Jun 17 11:32:05 2008 +0100
@@ -259,7 +259,8 @@
network_tx_buf_gc(dev);
local_irq_restore(flags);
- files[fd].read = 1;
+ if (fd != -1)
+ files[fd].read = 1;
wake_up(&netfront_queue);
}
#endif
@@ -323,6 +324,9 @@
dev = malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
dev->nodename = strdup(nodename);
+#ifdef HAVE_LIBC
+ dev->fd = -1;
+#endif
printk("net TX ring size %d\n", NET_TX_RING_SIZE);
printk("net RX ring size %d\n", NET_RX_RING_SIZE);
@@ -610,7 +614,7 @@
local_irq_save(flags);
network_rx(dev);
- if (!dev->rlen)
+ if (!dev->rlen && fd != -1)
/* No data for us, make select stop returning */
files[fd].read = 0;
/* Before re-enabling the interrupts, in case a packet just arrived in the
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