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f32269 |
From b0a20fac0e74b0b3eecc20ffe74006e7877da352 Mon Sep 17 00:00:00 2001
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f32269 |
From: Mohammed Gamal <mgamal@redhat.com>
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f32269 |
Date: Wed, 15 Apr 2020 12:00:14 +0200
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f32269 |
Subject: [PATCH 1/2] Update C files and scripts to kernel version 5.7-rc1
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f32269 |
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f32269 |
RH-Author: Mohammed Gamal <mgamal@redhat.com>
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f32269 |
Message-id: <20200414183955.194006-2-mgamal@redhat.com>
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f32269 |
Patchwork-id: 94689
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f32269 |
O-Subject: [RHEL8.3 virt hyperv-daemons PATCH v5 1/2] Update C files and scripts to kernel version 5.7-rc1
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f32269 |
Bugzilla: 1816750
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f32269 |
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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f32269 |
RH-Acked-by: Cathy Avery <cavery@redhat.com>
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f32269 |
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f32269 |
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
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f32269 |
---
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f32269 |
hv_fcopy_daemon.c | 38 ++++++++++++--
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f32269 |
hv_get_dhcp_info.sh | 2 +-
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f32269 |
hv_kvp_daemon.c | 63 ++++++++++++++---------
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f32269 |
hv_set_ifconfig.sh | 2 +-
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f32269 |
hv_vss_daemon.c | 118 ++++++++++++++++++++++++++++++++++++++------
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f32269 |
lsvmbus | 75 +++++++++++++++-------------
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f32269 |
6 files changed, 220 insertions(+), 78 deletions(-)
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f32269 |
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f32269 |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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f32269 |
---
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f32269 |
hv_fcopy_daemon.c | 38 ++++++++++++++---
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f32269 |
hv_get_dhcp_info.sh | 2 +-
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f32269 |
hv_kvp_daemon.c | 63 ++++++++++++++++++----------
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f32269 |
hv_set_ifconfig.sh | 2 +-
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f32269 |
hv_vss_daemon.c | 118 +++++++++++++++++++++++++++++++++++++++++++++-------
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f32269 |
lsvmbus | 75 ++++++++++++++++++---------------
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f32269 |
6 files changed, 220 insertions(+), 78 deletions(-)
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f32269 |
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f32269 |
diff --git a/hv_fcopy_daemon.c b/hv_fcopy_daemon.c
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f32269 |
index d78aed8..f40ddaf 100644
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f32269 |
--- a/hv_fcopy_daemon.c
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f32269 |
+++ b/hv_fcopy_daemon.c
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f32269 |
@@ -89,6 +89,8 @@ static int hv_start_fcopy(struct hv_start_fcopy *smsg)
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f32269 |
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f32269 |
error = 0;
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f32269 |
done:
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f32269 |
+ if (error)
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f32269 |
+ target_fname[0] = '\0';
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f32269 |
return error;
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f32269 |
}
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f32269 |
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f32269 |
@@ -117,15 +119,29 @@ static int hv_copy_data(struct hv_do_fcopy *cpmsg)
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f32269 |
return ret;
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f32269 |
}
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f32269 |
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f32269 |
+/*
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f32269 |
+ * Reset target_fname to "" in the two below functions for hibernation: if
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f32269 |
+ * the fcopy operation is aborted by hibernation, the daemon should remove the
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f32269 |
+ * partially-copied file; to achieve this, the hv_utils driver always fakes a
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f32269 |
+ * CANCEL_FCOPY message upon suspend, and later when the VM resumes back,
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f32269 |
+ * the daemon calls hv_copy_cancel() to remove the file; if a file is copied
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f32269 |
+ * successfully before suspend, hv_copy_finished() must reset target_fname to
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f32269 |
+ * avoid that the file can be incorrectly removed upon resume, since the faked
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f32269 |
+ * CANCEL_FCOPY message is spurious in this case.
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f32269 |
+ */
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f32269 |
static int hv_copy_finished(void)
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f32269 |
{
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f32269 |
close(target_fd);
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f32269 |
+ target_fname[0] = '\0';
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f32269 |
return 0;
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f32269 |
}
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f32269 |
static int hv_copy_cancel(void)
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f32269 |
{
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f32269 |
close(target_fd);
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f32269 |
- unlink(target_fname);
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f32269 |
+ if (strlen(target_fname) > 0) {
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f32269 |
+ unlink(target_fname);
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f32269 |
+ target_fname[0] = '\0';
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f32269 |
+ }
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f32269 |
return 0;
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f32269 |
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f32269 |
}
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f32269 |
@@ -140,7 +156,7 @@ void print_usage(char *argv[])
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f32269 |
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f32269 |
int main(int argc, char *argv[])
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f32269 |
{
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f32269 |
- int fcopy_fd;
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f32269 |
+ int fcopy_fd = -1;
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f32269 |
int error;
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f32269 |
int daemonize = 1, long_index = 0, opt;
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f32269 |
int version = FCOPY_CURRENT_VERSION;
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f32269 |
@@ -150,7 +166,7 @@ int main(int argc, char *argv[])
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f32269 |
struct hv_do_fcopy copy;
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f32269 |
__u32 kernel_modver;
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f32269 |
} buffer = { };
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f32269 |
- int in_handshake = 1;
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f32269 |
+ int in_handshake;
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f32269 |
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f32269 |
static struct option long_options[] = {
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{"help", no_argument, 0, 'h' },
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f32269 |
@@ -179,6 +195,12 @@ int main(int argc, char *argv[])
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f32269 |
openlog("HV_FCOPY", 0, LOG_USER);
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syslog(LOG_INFO, "starting; pid is:%d", getpid());
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f32269 |
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f32269 |
+reopen_fcopy_fd:
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+ if (fcopy_fd != -1)
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f32269 |
+ close(fcopy_fd);
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f32269 |
+ /* Remove any possible partially-copied file on error */
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f32269 |
+ hv_copy_cancel();
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f32269 |
+ in_handshake = 1;
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f32269 |
fcopy_fd = open("/dev/vmbus/hv_fcopy", O_RDWR);
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f32269 |
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f32269 |
if (fcopy_fd < 0) {
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f32269 |
@@ -205,7 +227,7 @@ int main(int argc, char *argv[])
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len = pread(fcopy_fd, &buffer, sizeof(buffer), 0);
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f32269 |
if (len < 0) {
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f32269 |
syslog(LOG_ERR, "pread failed: %s", strerror(errno));
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f32269 |
- exit(EXIT_FAILURE);
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f32269 |
+ goto reopen_fcopy_fd;
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f32269 |
}
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f32269 |
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f32269 |
if (in_handshake) {
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f32269 |
@@ -234,14 +256,20 @@ int main(int argc, char *argv[])
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f32269 |
break;
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f32269 |
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f32269 |
default:
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f32269 |
+ error = HV_E_FAIL;
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f32269 |
syslog(LOG_ERR, "Unknown operation: %d",
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f32269 |
buffer.hdr.operation);
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f32269 |
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f32269 |
}
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f32269 |
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f32269 |
+ /*
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f32269 |
+ * pwrite() may return an error due to the faked CANCEL_FCOPY
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f32269 |
+ * message upon hibernation. Ignore the error by resetting the
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f32269 |
+ * dev file, i.e. closing and re-opening it.
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f32269 |
+ */
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f32269 |
if (pwrite(fcopy_fd, &error, sizeof(int), 0) != sizeof(int)) {
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f32269 |
syslog(LOG_ERR, "pwrite failed: %s", strerror(errno));
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f32269 |
- exit(EXIT_FAILURE);
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f32269 |
+ goto reopen_fcopy_fd;
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f32269 |
}
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f32269 |
}
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f32269 |
}
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f32269 |
diff --git a/hv_get_dhcp_info.sh b/hv_get_dhcp_info.sh
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f32269 |
index c38686c..2f2a3c7 100644
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f32269 |
--- a/hv_get_dhcp_info.sh
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f32269 |
+++ b/hv_get_dhcp_info.sh
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f32269 |
@@ -13,7 +13,7 @@
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f32269 |
# the script prints the string "Disabled" to stdout.
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f32269 |
#
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f32269 |
# Each Distro is expected to implement this script in a distro specific
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-# fashion. For instance on Distros that ship with Network Manager enabled,
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f32269 |
+# fashion. For instance, on Distros that ship with Network Manager enabled,
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f32269 |
# this script can be based on the Network Manager APIs for retrieving DHCP
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f32269 |
# information.
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f32269 |
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f32269 |
diff --git a/hv_kvp_daemon.c b/hv_kvp_daemon.c
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f32269 |
index dbf6e8b..ee9c1bb 100644
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f32269 |
--- a/hv_kvp_daemon.c
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f32269 |
+++ b/hv_kvp_daemon.c
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f32269 |
@@ -76,7 +76,7 @@ enum {
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f32269 |
DNS
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f32269 |
};
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f32269 |
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f32269 |
-static int in_hand_shake = 1;
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f32269 |
+static int in_hand_shake;
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f32269 |
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f32269 |
static char *os_name = "";
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f32269 |
static char *os_major = "";
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f32269 |
@@ -286,7 +286,7 @@ static int kvp_key_delete(int pool, const __u8 *key, int key_size)
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f32269 |
* Found a match; just move the remaining
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f32269 |
* entries up.
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f32269 |
*/
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f32269 |
- if (i == num_records) {
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f32269 |
+ if (i == (num_records - 1)) {
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f32269 |
kvp_file_info[pool].num_records--;
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f32269 |
kvp_update_file(pool);
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f32269 |
return 0;
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f32269 |
@@ -700,7 +700,7 @@ static void kvp_get_ipconfig_info(char *if_name,
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f32269 |
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f32269 |
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f32269 |
/*
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f32269 |
- * Gather the DNS state.
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f32269 |
+ * Gather the DNS state.
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f32269 |
* Since there is no standard way to get this information
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f32269 |
* across various distributions of interest; we just invoke
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f32269 |
* an external script that needs to be ported across distros
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f32269 |
@@ -809,7 +809,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
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f32269 |
int sn_offset = 0;
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f32269 |
int error = 0;
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f32269 |
char *buffer;
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f32269 |
- struct hv_kvp_ipaddr_value *ip_buffer;
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f32269 |
+ struct hv_kvp_ipaddr_value *ip_buffer = NULL;
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f32269 |
char cidr_mask[5]; /* /xyz */
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f32269 |
int weight;
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f32269 |
int i;
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f32269 |
@@ -1051,7 +1051,7 @@ static int parse_ip_val_buffer(char *in_buf, int *offset,
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f32269 |
char *start;
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f32269 |
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f32269 |
/*
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f32269 |
- * in_buf has sequence of characters that are seperated by
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f32269 |
+ * in_buf has sequence of characters that are separated by
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f32269 |
* the character ';'. The last sequence does not have the
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f32269 |
* terminating ";" character.
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f32269 |
*/
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f32269 |
@@ -1178,6 +1178,7 @@ static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
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f32269 |
FILE *file;
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f32269 |
char cmd[PATH_MAX];
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f32269 |
char *mac_addr;
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f32269 |
+ int str_len;
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f32269 |
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f32269 |
/*
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f32269 |
* Set the configuration for the specified interface with
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f32269 |
@@ -1301,8 +1302,18 @@ static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
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f32269 |
* invoke the external script to do its magic.
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f32269 |
*/
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f32269 |
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f32269 |
- snprintf(cmd, sizeof(cmd), KVP_SCRIPTS_PATH "%s %s",
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f32269 |
- "hv_set_ifconfig", if_file);
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f32269 |
+ str_len = snprintf(cmd, sizeof(cmd), KVP_SCRIPTS_PATH "%s %s",
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f32269 |
+ "hv_set_ifconfig", if_file);
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f32269 |
+ /*
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f32269 |
+ * This is a little overcautious, but it's necessary to suppress some
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f32269 |
+ * false warnings from gcc 8.0.1.
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f32269 |
+ */
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f32269 |
+ if (str_len <= 0 || (unsigned int)str_len >= sizeof(cmd)) {
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f32269 |
+ syslog(LOG_ERR, "Cmd '%s' (len=%d) may be too long",
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f32269 |
+ cmd, str_len);
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f32269 |
+ return HV_E_FAIL;
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f32269 |
+ }
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f32269 |
+
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f32269 |
if (system(cmd)) {
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f32269 |
syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s",
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f32269 |
cmd, errno, strerror(errno));
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f32269 |
@@ -1349,7 +1360,7 @@ void print_usage(char *argv[])
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f32269 |
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f32269 |
int main(int argc, char *argv[])
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f32269 |
{
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f32269 |
- int kvp_fd, len;
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f32269 |
+ int kvp_fd = -1, len;
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f32269 |
int error;
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f32269 |
struct pollfd pfd;
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f32269 |
char *p;
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f32269 |
@@ -1375,6 +1386,8 @@ int main(int argc, char *argv[])
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f32269 |
daemonize = 0;
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f32269 |
break;
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f32269 |
case 'h':
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|
f32269 |
+ print_usage(argv);
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|
f32269 |
+ exit(0);
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f32269 |
default:
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|
f32269 |
print_usage(argv);
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f32269 |
exit(EXIT_FAILURE);
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|
f32269 |
@@ -1387,14 +1400,6 @@ int main(int argc, char *argv[])
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f32269 |
openlog("KVP", 0, LOG_USER);
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f32269 |
syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
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f32269 |
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f32269 |
- kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC);
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|
f32269 |
-
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f32269 |
- if (kvp_fd < 0) {
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|
f32269 |
- syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s",
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|
f32269 |
- errno, strerror(errno));
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f32269 |
- exit(EXIT_FAILURE);
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|
f32269 |
- }
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f32269 |
-
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|
f32269 |
/*
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|
f32269 |
* Retrieve OS release information.
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|
f32269 |
*/
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|
f32269 |
@@ -1410,6 +1415,18 @@ int main(int argc, char *argv[])
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f32269 |
exit(EXIT_FAILURE);
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|
f32269 |
}
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|
f32269 |
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f32269 |
+reopen_kvp_fd:
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|
f32269 |
+ if (kvp_fd != -1)
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|
f32269 |
+ close(kvp_fd);
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|
f32269 |
+ in_hand_shake = 1;
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|
f32269 |
+ kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC);
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|
f32269 |
+
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f32269 |
+ if (kvp_fd < 0) {
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|
f32269 |
+ syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s",
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|
f32269 |
+ errno, strerror(errno));
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|
f32269 |
+ exit(EXIT_FAILURE);
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|
f32269 |
+ }
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|
f32269 |
+
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|
|
f32269 |
/*
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|
f32269 |
* Register ourselves with the kernel.
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|
f32269 |
*/
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|
f32269 |
@@ -1443,9 +1460,7 @@ int main(int argc, char *argv[])
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f32269 |
if (len != sizeof(struct hv_kvp_msg)) {
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f32269 |
syslog(LOG_ERR, "read failed; error:%d %s",
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|
f32269 |
errno, strerror(errno));
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|
f32269 |
-
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|
f32269 |
- close(kvp_fd);
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|
f32269 |
- return EXIT_FAILURE;
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|
f32269 |
+ goto reopen_kvp_fd;
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|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
/*
|
|
|
f32269 |
@@ -1479,7 +1494,7 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
case KVP_OP_GET_IP_INFO:
|
|
|
f32269 |
kvp_ip_val = &hv_msg->body.kvp_ip_val;
|
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|
f32269 |
|
|
|
f32269 |
- error = kvp_mac_to_ip(kvp_ip_val);
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|
f32269 |
+ error = kvp_mac_to_ip(kvp_ip_val);
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|
f32269 |
|
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|
f32269 |
if (error)
|
|
|
f32269 |
hv_msg->error = error;
|
|
|
f32269 |
@@ -1604,13 +1619,17 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
break;
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
- /* Send the value back to the kernel. */
|
|
|
f32269 |
+ /*
|
|
|
f32269 |
+ * Send the value back to the kernel. Note: the write() may
|
|
|
f32269 |
+ * return an error due to hibernation; we can ignore the error
|
|
|
f32269 |
+ * by resetting the dev file, i.e. closing and re-opening it.
|
|
|
f32269 |
+ */
|
|
|
f32269 |
kvp_done:
|
|
|
f32269 |
len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg));
|
|
|
f32269 |
if (len != sizeof(struct hv_kvp_msg)) {
|
|
|
f32269 |
syslog(LOG_ERR, "write failed; error: %d %s", errno,
|
|
|
f32269 |
strerror(errno));
|
|
|
f32269 |
- exit(EXIT_FAILURE);
|
|
|
f32269 |
+ goto reopen_kvp_fd;
|
|
|
f32269 |
}
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
diff --git a/hv_set_ifconfig.sh b/hv_set_ifconfig.sh
|
|
|
f32269 |
index 18b27cc..3dd064c 100644
|
|
|
f32269 |
--- a/hv_set_ifconfig.sh
|
|
|
f32269 |
+++ b/hv_set_ifconfig.sh
|
|
|
f32269 |
@@ -12,7 +12,7 @@
|
|
|
f32269 |
# be used to configure the interface.
|
|
|
f32269 |
#
|
|
|
f32269 |
# Each Distro is expected to implement this script in a distro specific
|
|
|
f32269 |
-# fashion. For instance on Distros that ship with Network Manager enabled,
|
|
|
f32269 |
+# fashion. For instance, on Distros that ship with Network Manager enabled,
|
|
|
f32269 |
# this script can be based on the Network Manager APIs for configuring the
|
|
|
f32269 |
# interface.
|
|
|
f32269 |
#
|
|
|
f32269 |
diff --git a/hv_vss_daemon.c b/hv_vss_daemon.c
|
|
|
f32269 |
index 34031a2..8fe0a5c 100644
|
|
|
f32269 |
--- a/hv_vss_daemon.c
|
|
|
f32269 |
+++ b/hv_vss_daemon.c
|
|
|
f32269 |
@@ -36,6 +36,10 @@
|
|
|
f32269 |
#include <linux/hyperv.h>
|
|
|
f32269 |
#include <syslog.h>
|
|
|
f32269 |
#include <getopt.h>
|
|
|
f32269 |
+#include <stdbool.h>
|
|
|
f32269 |
+#include <dirent.h>
|
|
|
f32269 |
+
|
|
|
f32269 |
+static bool fs_frozen;
|
|
|
f32269 |
|
|
|
f32269 |
/* Don't use syslog() in the function since that can cause write to disk */
|
|
|
f32269 |
static int vss_do_freeze(char *dir, unsigned int cmd)
|
|
|
f32269 |
@@ -51,7 +55,7 @@ static int vss_do_freeze(char *dir, unsigned int cmd)
|
|
|
f32269 |
* If a partition is mounted more than once, only the first
|
|
|
f32269 |
* FREEZE/THAW can succeed and the later ones will get
|
|
|
f32269 |
* EBUSY/EINVAL respectively: there could be 2 cases:
|
|
|
f32269 |
- * 1) a user may mount the same partition to differnt directories
|
|
|
f32269 |
+ * 1) a user may mount the same partition to different directories
|
|
|
f32269 |
* by mistake or on purpose;
|
|
|
f32269 |
* 2) The subvolume of btrfs appears to have the same partition
|
|
|
f32269 |
* mounted more than once.
|
|
|
f32269 |
@@ -68,6 +72,55 @@ static int vss_do_freeze(char *dir, unsigned int cmd)
|
|
|
f32269 |
return !!ret;
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
+static bool is_dev_loop(const char *blkname)
|
|
|
f32269 |
+{
|
|
|
f32269 |
+ char *buffer;
|
|
|
f32269 |
+ DIR *dir;
|
|
|
f32269 |
+ struct dirent *entry;
|
|
|
f32269 |
+ bool ret = false;
|
|
|
f32269 |
+
|
|
|
f32269 |
+ buffer = malloc(PATH_MAX);
|
|
|
f32269 |
+ if (!buffer) {
|
|
|
f32269 |
+ syslog(LOG_ERR, "Can't allocate memory!");
|
|
|
f32269 |
+ exit(1);
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+
|
|
|
f32269 |
+ snprintf(buffer, PATH_MAX, "%s/loop", blkname);
|
|
|
f32269 |
+ if (!access(buffer, R_OK | X_OK)) {
|
|
|
f32269 |
+ ret = true;
|
|
|
f32269 |
+ goto free_buffer;
|
|
|
f32269 |
+ } else if (errno != ENOENT) {
|
|
|
f32269 |
+ syslog(LOG_ERR, "Can't access: %s; error:%d %s!",
|
|
|
f32269 |
+ buffer, errno, strerror(errno));
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+
|
|
|
f32269 |
+ snprintf(buffer, PATH_MAX, "%s/slaves", blkname);
|
|
|
f32269 |
+ dir = opendir(buffer);
|
|
|
f32269 |
+ if (!dir) {
|
|
|
f32269 |
+ if (errno != ENOENT)
|
|
|
f32269 |
+ syslog(LOG_ERR, "Can't opendir: %s; error:%d %s!",
|
|
|
f32269 |
+ buffer, errno, strerror(errno));
|
|
|
f32269 |
+ goto free_buffer;
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+
|
|
|
f32269 |
+ while ((entry = readdir(dir)) != NULL) {
|
|
|
f32269 |
+ if (strcmp(entry->d_name, ".") == 0 ||
|
|
|
f32269 |
+ strcmp(entry->d_name, "..") == 0)
|
|
|
f32269 |
+ continue;
|
|
|
f32269 |
+
|
|
|
f32269 |
+ snprintf(buffer, PATH_MAX, "%s/slaves/%s", blkname,
|
|
|
f32269 |
+ entry->d_name);
|
|
|
f32269 |
+ if (is_dev_loop(buffer)) {
|
|
|
f32269 |
+ ret = true;
|
|
|
f32269 |
+ break;
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+ closedir(dir);
|
|
|
f32269 |
+free_buffer:
|
|
|
f32269 |
+ free(buffer);
|
|
|
f32269 |
+ return ret;
|
|
|
f32269 |
+}
|
|
|
f32269 |
+
|
|
|
f32269 |
static int vss_operate(int operation)
|
|
|
f32269 |
{
|
|
|
f32269 |
char match[] = "/dev/";
|
|
|
f32269 |
@@ -75,6 +128,7 @@ static int vss_operate(int operation)
|
|
|
f32269 |
struct mntent *ent;
|
|
|
f32269 |
struct stat sb;
|
|
|
f32269 |
char errdir[1024] = {0};
|
|
|
f32269 |
+ char blkdir[23]; /* /sys/dev/block/XXX:XXX */
|
|
|
f32269 |
unsigned int cmd;
|
|
|
f32269 |
int error = 0, root_seen = 0, save_errno = 0;
|
|
|
f32269 |
|
|
|
f32269 |
@@ -96,10 +150,15 @@ static int vss_operate(int operation)
|
|
|
f32269 |
while ((ent = getmntent(mounts))) {
|
|
|
f32269 |
if (strncmp(ent->mnt_fsname, match, strlen(match)))
|
|
|
f32269 |
continue;
|
|
|
f32269 |
- if (stat(ent->mnt_fsname, &sb) == -1)
|
|
|
f32269 |
- continue;
|
|
|
f32269 |
- if (S_ISBLK(sb.st_mode) && major(sb.st_rdev) == LOOP_MAJOR)
|
|
|
f32269 |
- continue;
|
|
|
f32269 |
+ if (stat(ent->mnt_fsname, &sb)) {
|
|
|
f32269 |
+ syslog(LOG_ERR, "Can't stat: %s; error:%d %s!",
|
|
|
f32269 |
+ ent->mnt_fsname, errno, strerror(errno));
|
|
|
f32269 |
+ } else {
|
|
|
f32269 |
+ sprintf(blkdir, "/sys/dev/block/%d:%d",
|
|
|
f32269 |
+ major(sb.st_rdev), minor(sb.st_rdev));
|
|
|
f32269 |
+ if (is_dev_loop(blkdir))
|
|
|
f32269 |
+ continue;
|
|
|
f32269 |
+ }
|
|
|
f32269 |
if (hasmntopt(ent, MNTOPT_RO) != NULL)
|
|
|
f32269 |
continue;
|
|
|
f32269 |
if (strcmp(ent->mnt_type, "vfat") == 0)
|
|
|
f32269 |
@@ -109,18 +168,27 @@ static int vss_operate(int operation)
|
|
|
f32269 |
continue;
|
|
|
f32269 |
}
|
|
|
f32269 |
error |= vss_do_freeze(ent->mnt_dir, cmd);
|
|
|
f32269 |
- if (error && operation == VSS_OP_FREEZE)
|
|
|
f32269 |
- goto err;
|
|
|
f32269 |
+ if (operation == VSS_OP_FREEZE) {
|
|
|
f32269 |
+ if (error)
|
|
|
f32269 |
+ goto err;
|
|
|
f32269 |
+ fs_frozen = true;
|
|
|
f32269 |
+ }
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
endmntent(mounts);
|
|
|
f32269 |
|
|
|
f32269 |
if (root_seen) {
|
|
|
f32269 |
error |= vss_do_freeze("/", cmd);
|
|
|
f32269 |
- if (error && operation == VSS_OP_FREEZE)
|
|
|
f32269 |
- goto err;
|
|
|
f32269 |
+ if (operation == VSS_OP_FREEZE) {
|
|
|
f32269 |
+ if (error)
|
|
|
f32269 |
+ goto err;
|
|
|
f32269 |
+ fs_frozen = true;
|
|
|
f32269 |
+ }
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
+ if (operation == VSS_OP_THAW && !error)
|
|
|
f32269 |
+ fs_frozen = false;
|
|
|
f32269 |
+
|
|
|
f32269 |
goto out;
|
|
|
f32269 |
err:
|
|
|
f32269 |
save_errno = errno;
|
|
|
f32269 |
@@ -129,6 +197,7 @@ err:
|
|
|
f32269 |
endmntent(mounts);
|
|
|
f32269 |
}
|
|
|
f32269 |
vss_operate(VSS_OP_THAW);
|
|
|
f32269 |
+ fs_frozen = false;
|
|
|
f32269 |
/* Call syslog after we thaw all filesystems */
|
|
|
f32269 |
if (ent)
|
|
|
f32269 |
syslog(LOG_ERR, "FREEZE of %s failed; error:%d %s",
|
|
|
f32269 |
@@ -150,13 +219,13 @@ void print_usage(char *argv[])
|
|
|
f32269 |
|
|
|
f32269 |
int main(int argc, char *argv[])
|
|
|
f32269 |
{
|
|
|
f32269 |
- int vss_fd, len;
|
|
|
f32269 |
+ int vss_fd = -1, len;
|
|
|
f32269 |
int error;
|
|
|
f32269 |
struct pollfd pfd;
|
|
|
f32269 |
int op;
|
|
|
f32269 |
struct hv_vss_msg vss_msg[1];
|
|
|
f32269 |
int daemonize = 1, long_index = 0, opt;
|
|
|
f32269 |
- int in_handshake = 1;
|
|
|
f32269 |
+ int in_handshake;
|
|
|
f32269 |
__u32 kernel_modver;
|
|
|
f32269 |
|
|
|
f32269 |
static struct option long_options[] = {
|
|
|
f32269 |
@@ -172,6 +241,8 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
daemonize = 0;
|
|
|
f32269 |
break;
|
|
|
f32269 |
case 'h':
|
|
|
f32269 |
+ print_usage(argv);
|
|
|
f32269 |
+ exit(0);
|
|
|
f32269 |
default:
|
|
|
f32269 |
print_usage(argv);
|
|
|
f32269 |
exit(EXIT_FAILURE);
|
|
|
f32269 |
@@ -184,6 +255,18 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
openlog("Hyper-V VSS", 0, LOG_USER);
|
|
|
f32269 |
syslog(LOG_INFO, "VSS starting; pid is:%d", getpid());
|
|
|
f32269 |
|
|
|
f32269 |
+reopen_vss_fd:
|
|
|
f32269 |
+ if (vss_fd != -1)
|
|
|
f32269 |
+ close(vss_fd);
|
|
|
f32269 |
+ if (fs_frozen) {
|
|
|
f32269 |
+ if (vss_operate(VSS_OP_THAW) || fs_frozen) {
|
|
|
f32269 |
+ syslog(LOG_ERR, "failed to thaw file system: err=%d",
|
|
|
f32269 |
+ errno);
|
|
|
f32269 |
+ exit(EXIT_FAILURE);
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+ }
|
|
|
f32269 |
+
|
|
|
f32269 |
+ in_handshake = 1;
|
|
|
f32269 |
vss_fd = open("/dev/vmbus/hv_vss", O_RDWR);
|
|
|
f32269 |
if (vss_fd < 0) {
|
|
|
f32269 |
syslog(LOG_ERR, "open /dev/vmbus/hv_vss failed; error: %d %s",
|
|
|
f32269 |
@@ -236,8 +319,7 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
if (len != sizeof(struct hv_vss_msg)) {
|
|
|
f32269 |
syslog(LOG_ERR, "read failed; error:%d %s",
|
|
|
f32269 |
errno, strerror(errno));
|
|
|
f32269 |
- close(vss_fd);
|
|
|
f32269 |
- return EXIT_FAILURE;
|
|
|
f32269 |
+ goto reopen_vss_fd;
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
op = vss_msg->vss_hdr.operation;
|
|
|
f32269 |
@@ -264,14 +346,18 @@ int main(int argc, char *argv[])
|
|
|
f32269 |
default:
|
|
|
f32269 |
syslog(LOG_ERR, "Illegal op:%d\n", op);
|
|
|
f32269 |
}
|
|
|
f32269 |
+
|
|
|
f32269 |
+ /*
|
|
|
f32269 |
+ * The write() may return an error due to the faked VSS_OP_THAW
|
|
|
f32269 |
+ * message upon hibernation. Ignore the error by resetting the
|
|
|
f32269 |
+ * dev file, i.e. closing and re-opening it.
|
|
|
f32269 |
+ */
|
|
|
f32269 |
vss_msg->error = error;
|
|
|
f32269 |
len = write(vss_fd, vss_msg, sizeof(struct hv_vss_msg));
|
|
|
f32269 |
if (len != sizeof(struct hv_vss_msg)) {
|
|
|
f32269 |
syslog(LOG_ERR, "write failed; error: %d %s", errno,
|
|
|
f32269 |
strerror(errno));
|
|
|
f32269 |
-
|
|
|
f32269 |
- if (op == VSS_OP_FREEZE)
|
|
|
f32269 |
- vss_operate(VSS_OP_THAW);
|
|
|
f32269 |
+ goto reopen_vss_fd;
|
|
|
f32269 |
}
|
|
|
f32269 |
}
|
|
|
f32269 |
|
|
|
f32269 |
diff --git a/lsvmbus b/lsvmbus
|
|
|
f32269 |
index 55e7374..099f2c4 100644
|
|
|
f32269 |
--- a/lsvmbus
|
|
|
f32269 |
+++ b/lsvmbus
|
|
|
f32269 |
@@ -4,10 +4,10 @@
|
|
|
f32269 |
import os
|
|
|
f32269 |
from optparse import OptionParser
|
|
|
f32269 |
|
|
|
f32269 |
+help_msg = "print verbose messages. Try -vv, -vvv for more verbose messages"
|
|
|
f32269 |
parser = OptionParser()
|
|
|
f32269 |
-parser.add_option("-v", "--verbose", dest="verbose",
|
|
|
f32269 |
- help="print verbose messages. Try -vv, -vvv for \
|
|
|
f32269 |
- more verbose messages", action="count")
|
|
|
f32269 |
+parser.add_option(
|
|
|
f32269 |
+ "-v", "--verbose", dest="verbose", help=help_msg, action="count")
|
|
|
f32269 |
|
|
|
f32269 |
(options, args) = parser.parse_args()
|
|
|
f32269 |
|
|
|
f32269 |
@@ -21,27 +21,28 @@ if not os.path.isdir(vmbus_sys_path):
|
|
|
f32269 |
exit(-1)
|
|
|
f32269 |
|
|
|
f32269 |
vmbus_dev_dict = {
|
|
|
f32269 |
- '{0e0b6031-5213-4934-818b-38d90ced39db}' : '[Operating system shutdown]',
|
|
|
f32269 |
- '{9527e630-d0ae-497b-adce-e80ab0175caf}' : '[Time Synchronization]',
|
|
|
f32269 |
- '{57164f39-9115-4e78-ab55-382f3bd5422d}' : '[Heartbeat]',
|
|
|
f32269 |
- '{a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}' : '[Data Exchange]',
|
|
|
f32269 |
- '{35fa2e29-ea23-4236-96ae-3a6ebacba440}' : '[Backup (volume checkpoint)]',
|
|
|
f32269 |
- '{34d14be3-dee4-41c8-9ae7-6b174977c192}' : '[Guest services]',
|
|
|
f32269 |
- '{525074dc-8985-46e2-8057-a307dc18a502}' : '[Dynamic Memory]',
|
|
|
f32269 |
- '{cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}' : 'Synthetic mouse',
|
|
|
f32269 |
- '{f912ad6d-2b17-48ea-bd65-f927a61c7684}' : 'Synthetic keyboard',
|
|
|
f32269 |
- '{da0a7802-e377-4aac-8e77-0558eb1073f8}' : 'Synthetic framebuffer adapter',
|
|
|
f32269 |
- '{f8615163-df3e-46c5-913f-f2d2f965ed0e}' : 'Synthetic network adapter',
|
|
|
f32269 |
- '{32412632-86cb-44a2-9b5c-50d1417354f5}' : 'Synthetic IDE Controller',
|
|
|
f32269 |
- '{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}' : 'Synthetic SCSI Controller',
|
|
|
f32269 |
- '{2f9bcc4a-0069-4af3-b76b-6fd0be528cda}' : 'Synthetic fiber channel adapter',
|
|
|
f32269 |
- '{8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}' : 'Synthetic RDMA adapter',
|
|
|
f32269 |
- '{44c4f61d-4444-4400-9d52-802e27ede19f}' : 'PCI Express pass-through',
|
|
|
f32269 |
- '{276aacf4-ac15-426c-98dd-7521ad3f01fe}' : '[Reserved system device]',
|
|
|
f32269 |
- '{f8e65716-3cb3-4a06-9a60-1889c5cccab5}' : '[Reserved system device]',
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|
|
f32269 |
- '{3375baf4-9e15-4b30-b765-67acb10d607b}' : '[Reserved system device]',
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|
|
f32269 |
+ '{0e0b6031-5213-4934-818b-38d90ced39db}': '[Operating system shutdown]',
|
|
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f32269 |
+ '{9527e630-d0ae-497b-adce-e80ab0175caf}': '[Time Synchronization]',
|
|
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f32269 |
+ '{57164f39-9115-4e78-ab55-382f3bd5422d}': '[Heartbeat]',
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|
|
f32269 |
+ '{a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}': '[Data Exchange]',
|
|
|
f32269 |
+ '{35fa2e29-ea23-4236-96ae-3a6ebacba440}': '[Backup (volume checkpoint)]',
|
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|
f32269 |
+ '{34d14be3-dee4-41c8-9ae7-6b174977c192}': '[Guest services]',
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|
|
f32269 |
+ '{525074dc-8985-46e2-8057-a307dc18a502}': '[Dynamic Memory]',
|
|
|
f32269 |
+ '{cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}': 'Synthetic mouse',
|
|
|
f32269 |
+ '{f912ad6d-2b17-48ea-bd65-f927a61c7684}': 'Synthetic keyboard',
|
|
|
f32269 |
+ '{da0a7802-e377-4aac-8e77-0558eb1073f8}': 'Synthetic framebuffer adapter',
|
|
|
f32269 |
+ '{f8615163-df3e-46c5-913f-f2d2f965ed0e}': 'Synthetic network adapter',
|
|
|
f32269 |
+ '{32412632-86cb-44a2-9b5c-50d1417354f5}': 'Synthetic IDE Controller',
|
|
|
f32269 |
+ '{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}': 'Synthetic SCSI Controller',
|
|
|
f32269 |
+ '{2f9bcc4a-0069-4af3-b76b-6fd0be528cda}': 'Synthetic fiber channel adapter',
|
|
|
f32269 |
+ '{8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}': 'Synthetic RDMA adapter',
|
|
|
f32269 |
+ '{44c4f61d-4444-4400-9d52-802e27ede19f}': 'PCI Express pass-through',
|
|
|
f32269 |
+ '{276aacf4-ac15-426c-98dd-7521ad3f01fe}': '[Reserved system device]',
|
|
|
f32269 |
+ '{f8e65716-3cb3-4a06-9a60-1889c5cccab5}': '[Reserved system device]',
|
|
|
f32269 |
+ '{3375baf4-9e15-4b30-b765-67acb10d607b}': '[Reserved system device]',
|
|
|
f32269 |
}
|
|
|
f32269 |
|
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|
f32269 |
+
|
|
|
f32269 |
def get_vmbus_dev_attr(dev_name, attr):
|
|
|
f32269 |
try:
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|
|
f32269 |
f = open('%s/%s/%s' % (vmbus_sys_path, dev_name, attr), 'r')
|
|
|
f32269 |
@@ -52,6 +53,7 @@ def get_vmbus_dev_attr(dev_name, attr):
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|
f32269 |
|
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|
f32269 |
return lines
|
|
|
f32269 |
|
|
|
f32269 |
+
|
|
|
f32269 |
class VMBus_Dev:
|
|
|
f32269 |
pass
|
|
|
f32269 |
|
|
|
f32269 |
@@ -66,12 +68,13 @@ for f in os.listdir(vmbus_sys_path):
|
|
|
f32269 |
|
|
|
f32269 |
chn_vp_mapping = get_vmbus_dev_attr(f, 'channel_vp_mapping')
|
|
|
f32269 |
chn_vp_mapping = [c.strip() for c in chn_vp_mapping]
|
|
|
f32269 |
- chn_vp_mapping = sorted(chn_vp_mapping,
|
|
|
f32269 |
- key = lambda c : int(c.split(':')[0]))
|
|
|
f32269 |
+ chn_vp_mapping = sorted(
|
|
|
f32269 |
+ chn_vp_mapping, key=lambda c: int(c.split(':')[0]))
|
|
|
f32269 |
|
|
|
f32269 |
- chn_vp_mapping = ['\tRel_ID=%s, target_cpu=%s' %
|
|
|
f32269 |
- (c.split(':')[0], c.split(':')[1])
|
|
|
f32269 |
- for c in chn_vp_mapping]
|
|
|
f32269 |
+ chn_vp_mapping = [
|
|
|
f32269 |
+ '\tRel_ID=%s, target_cpu=%s' %
|
|
|
f32269 |
+ (c.split(':')[0], c.split(':')[1]) for c in chn_vp_mapping
|
|
|
f32269 |
+ ]
|
|
|
f32269 |
d = VMBus_Dev()
|
|
|
f32269 |
d.sysfs_path = '%s/%s' % (vmbus_sys_path, f)
|
|
|
f32269 |
d.vmbus_id = vmbus_id
|
|
|
f32269 |
@@ -85,7 +88,7 @@ for f in os.listdir(vmbus_sys_path):
|
|
|
f32269 |
vmbus_dev_list.append(d)
|
|
|
f32269 |
|
|
|
f32269 |
|
|
|
f32269 |
-vmbus_dev_list = sorted(vmbus_dev_list, key = lambda d : int(d.vmbus_id))
|
|
|
f32269 |
+vmbus_dev_list = sorted(vmbus_dev_list, key=lambda d: int(d.vmbus_id))
|
|
|
f32269 |
|
|
|
f32269 |
format0 = '%2s: %s'
|
|
|
f32269 |
format1 = '%2s: Class_ID = %s - %s\n%s'
|
|
|
f32269 |
@@ -95,9 +98,15 @@ for d in vmbus_dev_list:
|
|
|
f32269 |
if verbose == 0:
|
|
|
f32269 |
print(('VMBUS ID ' + format0) % (d.vmbus_id, d.dev_desc))
|
|
|
f32269 |
elif verbose == 1:
|
|
|
f32269 |
- print (('VMBUS ID ' + format1) % \
|
|
|
f32269 |
- (d.vmbus_id, d.class_id, d.dev_desc, d.chn_vp_mapping))
|
|
|
f32269 |
+ print(
|
|
|
f32269 |
+ ('VMBUS ID ' + format1) %
|
|
|
f32269 |
+ (d.vmbus_id, d.class_id, d.dev_desc, d.chn_vp_mapping)
|
|
|
f32269 |
+ )
|
|
|
f32269 |
else:
|
|
|
f32269 |
- print (('VMBUS ID ' + format2) % \
|
|
|
f32269 |
- (d.vmbus_id, d.class_id, d.dev_desc, \
|
|
|
f32269 |
- d.device_id, d.sysfs_path, d.chn_vp_mapping))
|
|
|
f32269 |
+ print(
|
|
|
f32269 |
+ ('VMBUS ID ' + format2) %
|
|
|
f32269 |
+ (
|
|
|
f32269 |
+ d.vmbus_id, d.class_id, d.dev_desc,
|
|
|
f32269 |
+ d.device_id, d.sysfs_path, d.chn_vp_mapping
|
|
|
f32269 |
+ )
|
|
|
f32269 |
+ )
|
|
|
f32269 |
--
|
|
|
f32269 |
1.8.3.1
|
|
|
f32269 |
|