diff options
Diffstat (limited to 'usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c')
| -rw-r--r-- | usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c b/usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c index 807bc8269b..34bb772632 100644 --- a/usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c +++ b/usr/src/cmd/cmd-inet/sbin/dhcpagent/agent.c @@ -23,8 +23,6 @@ * Use is subject to license terms. */ -#pragma ident "%Z%%M% %I% %E% SMI" - #include <sys/types.h> #include <stdlib.h> #include <errno.h> @@ -41,6 +39,10 @@ #include <netinet/dhcp.h> #include <net/route.h> #include <sys/sockio.h> +#include <sys/stat.h> +#include <stropts.h> +#include <fcntl.h> +#include <sys/scsi/adapters/iscsi_if.h> #include "async.h" #include "agent.h" @@ -121,6 +123,9 @@ static uint_t ipc_cmd_flags[DHCP_NIPC] = { /* DHCP_GET_TAG */ CMD_BOOTP|CMD_IMMED }; +static boolean_t +is_iscsi_active(void); + int main(int argc, char **argv) { @@ -367,8 +372,16 @@ drain_script(iu_eh_t *ehp, void *arg) { if (shutdown_started == B_FALSE) { shutdown_started = B_TRUE; - if (do_adopt == B_FALSE) /* see 4291141 */ + /* + * Check if the system is diskless client and/or + * there are active iSCSI sessions + * + * Do not drop the lease, or the system will be + * unable to sync(dump) through nfs/iSCSI driver + */ + if (!do_adopt && !is_iscsi_active()) { nuke_smach_list(); + } } return (script_count == 0); } @@ -1468,3 +1481,24 @@ check_cmd_allowed(DHCPSTATE state, dhcp_ipc_type_t cmd) { return (ipc_cmd_allowed[state][cmd] != 0); } + +static boolean_t +is_iscsi_active(void) +{ + int fd; + int active; + + if ((fd = open(ISCSI_DRIVER_DEVCTL, O_RDONLY)) == -1) { + return (B_FALSE); + } + + if ((ioctl(fd, ISCSI_IS_ACTIVE, &active)) != 0) { + active = 0; + } + (void) close(fd); + if (active) { + return (B_TRUE); + } else { + return (B_FALSE); + } +} |