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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Make xenstored bind to domain exception virq directly, instead of via xcs.
# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID acde14d25398daa50263c1a890371e19d9dcf78a
# Parent 652bd7876153830eead6c292d3787a9c29256e36
Make xenstored bind to domain exception virq directly, instead of via xcs.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
diff -r 652bd7876153 -r acde14d25398 tools/xenstore/xenstored_core.c
--- a/tools/xenstore/xenstored_core.c Wed Sep 7 14:19:05 2005
+++ b/tools/xenstore/xenstored_core.c Wed Sep 7 15:53:04 2005
@@ -51,7 +51,6 @@
#include "xenstored_domain.h"
#include "xenctrl.h"
#include "xen/io/domain_controller.h"
-#include "xcs_proto.h"
static bool verbose;
LIST_HEAD(connections);
@@ -325,7 +324,7 @@
}
static int initialize_set(fd_set *inset, fd_set *outset, int sock, int ro_sock,
- int event_fd, int xcs_fd)
+ int event_fd)
{
struct connection *i;
int max;
@@ -340,9 +339,6 @@
FD_SET(event_fd, inset);
if (event_fd > max)
max = event_fd;
- FD_SET(xcs_fd, inset);
- if (xcs_fd > max)
- max = xcs_fd;
list_for_each_entry(i, &connections, list) {
if (i->domain)
continue;
@@ -1650,125 +1646,6 @@
umask(0);
}
-static int open_domain_socket(const char *path)
-{
- struct sockaddr_un addr;
- int sock;
- size_t addr_len;
-
- if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) == -1) {
- goto out;
- }
-
- addr.sun_family = AF_UNIX;
- strcpy(addr.sun_path, path);
- addr_len = sizeof(addr.sun_family) + strlen(XCS_SUN_PATH) + 1;
-
- if (connect(sock, (struct sockaddr *)&addr, addr_len) == -1) {
- goto out_close_sock;
- }
-
- return sock;
-
- out_close_sock:
- close(sock);
- out:
- return -1;
-}
-
-bool _read_write_sync(int fd, void *data, size_t size, bool do_read)
-{
- size_t offset = 0;
- ssize_t len;
-
- while (offset < size) {
- if (do_read) {
- len = read(fd, data + offset, size - offset);
- } else {
- len = write(fd, data + offset, size - offset);
- }
-
- if (len < 1) {
- if (len == -1 && (errno == EAGAIN || errno == EINTR)) {
- continue;
- } else {
- return false;
- }
- } else {
- offset += len;
- }
- }
-
- return true;
-}
-
-#define read_sync(fd, buffer, size) _read_write_sync(fd, buffer, size, true)
-#define write_sync(fd, buffer, size) _read_write_sync(fd, buffer, size, false)
-
-/* synchronized send/recv strictly for setting up xcs */
-/* always use asychronize callbacks any other time */
-static bool xcs_send_recv(int fd, xcs_msg_t *msg)
-{
- bool ret = false;
-
- if (!write_sync(fd, msg, sizeof(*msg))) {
- eprintf("Write failed at %s:%s():L%d? Possible bug.",
- __FILE__, __FUNCTION__, __LINE__);
- goto out;
- }
-
- if (!read_sync(fd, msg, sizeof(*msg))) {
- eprintf("Read failed at %s:%s():L%d? Possible bug.",
- __FILE__, __FUNCTION__, __LINE__);
- goto out;
- }
-
- ret = true;
-
- out:
- return ret;
-}
-
-static void handle_xcs(int xcs_fd)
-{
- xcs_msg_t msg;
-
- if (!read_sync(xcs_fd, &msg, sizeof(msg)))
- barf_perror("read from xcs failed!");
-
- domain_cleanup();
-}
-
-static int xcs_init(void)
-{
- int ctrl_fd, data_fd;
- xcs_msg_t msg;
-
- ctrl_fd = open_domain_socket(XCS_SUN_PATH);
- if (ctrl_fd == -1)
- barf_perror("Failed to contact xcs. Is it running?");
-
- data_fd = open_domain_socket(XCS_SUN_PATH);
- if (data_fd == -1)
- barf_perror("Failed to contact xcs. Is it running?");
-
- memset(&msg, 0, sizeof(msg));
- msg.type = XCS_CONNECT_CTRL;
- if (!xcs_send_recv(ctrl_fd, &msg) || msg.result != XCS_RSLT_OK)
- barf_perror("xcs control connect failed.");
-
- msg.type = XCS_CONNECT_DATA;
- if (!xcs_send_recv(data_fd, &msg) || msg.result != XCS_RSLT_OK)
- barf_perror("xcs data connect failed.");
-
- msg.type = XCS_VIRQ_BIND;
- msg.u.virq.virq = VIRQ_DOM_EXC;
- if (!xcs_send_recv(ctrl_fd, &msg) || msg.result != XCS_RSLT_OK)
- barf_perror("xcs virq bind failed.");
-
- return data_fd;
-}
-
static struct option options[] = {
{ "pid-file", 1, NULL, 'F' },
@@ -1780,7 +1657,7 @@
int main(int argc, char *argv[])
{
- int opt, *sock, *ro_sock, event_fd, xcs_fd, max;
+ int opt, *sock, *ro_sock, event_fd, max;
struct sockaddr_un addr;
fd_set inset, outset;
bool dofork = true;
@@ -1864,9 +1741,6 @@
/* Listen to hypervisor. */
event_fd = domain_init();
- /* Listen to hypervisor - more. */
- xcs_fd = xcs_init();
-
/* Restore existing connections. */
restore_existing_connections();
@@ -1887,8 +1761,7 @@
#endif
/* Get ready to listen to the tools. */
- max = initialize_set(&inset, &outset, *sock, *ro_sock, event_fd,
- xcs_fd);
+ max = initialize_set(&inset, &outset, *sock, *ro_sock, event_fd);
/* Main loop. */
/* FIXME: Rewrite so noone can starve. */
@@ -1918,9 +1791,6 @@
if (FD_ISSET(event_fd, &inset))
handle_event(event_fd);
-
- if (FD_ISSET(xcs_fd, &inset))
- handle_xcs(xcs_fd);
list_for_each_entry(i, &connections, list) {
if (i->domain)
@@ -1965,6 +1835,6 @@
unblock_connections();
max = initialize_set(&inset, &outset, *sock, *ro_sock,
- event_fd, xcs_fd);
- }
-}
+ event_fd);
+ }
+}
diff -r 652bd7876153 -r acde14d25398 tools/xenstore/xenstored_domain.c
--- a/tools/xenstore/xenstored_domain.c Wed Sep 7 14:19:05 2005
+++ b/tools/xenstore/xenstored_domain.c Wed Sep 7 15:53:04 2005
@@ -38,6 +38,7 @@
static int *xc_handle;
static int eventchn_fd;
+static int virq_port;
static unsigned int ringbuf_datasize;
struct domain
@@ -224,6 +225,10 @@
if (read(event_fd, &port, sizeof(port)) != sizeof(port))
barf_perror("Failed to read from event fd");
+
+ if (port == virq_port)
+ domain_cleanup();
+
#ifndef TESTING
if (write(event_fd, &port, sizeof(port)) != sizeof(port))
barf_perror("Failed to write to event fd");
@@ -449,5 +454,12 @@
#endif
if (eventchn_fd < 0)
barf_perror("Failed to open connection to hypervisor");
+
+ if (xc_evtchn_bind_virq(*xc_handle, VIRQ_DOM_EXC, &virq_port))
+ barf_perror("Failed to bind to domain exception virq");
+
+ if (ioctl(eventchn_fd, EVENTCHN_BIND, virq_port) != 0)
+ barf_perror("Failed to bind to domain exception virq port");
+
return eventchn_fd;
}
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