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Add a cleanup handler called "atexit" to make sure we free up target

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mode instances.

Print out exception information passed out from the kernel target mode
driver to this userland daemon.
This commit is contained in:
Justin T. Gibbs 1999-08-16 22:52:17 +00:00
parent 99cfa26a69
commit 8760939718
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=49935
1 changed files with 14 additions and 2 deletions
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16
share/examples/scsi_target/scsi_target.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: scsi_target.c,v 1.2 1998/12/10 04:00:03 gibbs Exp $
* $Id: scsi_target.c,v 1.3 1999/03/05 23:12:02 gibbs Exp $
*/
#include <sys/types.h>
@ -63,6 +63,7 @@ struct ioc_alloc_unit alloc_unit = {
};
static void pump_events();
static void cleanup();
static void handle_exception();
static void quit_handler();
static void usage();
@ -154,8 +155,16 @@ main(int argc, char *argv[])
signal(SIGINT, quit_handler);
signal(SIGTERM, quit_handler);
atexit(cleanup);
pump_events();
return (0);
}
static void
cleanup()
{
close(targfd);
if (ioctl(targctlfd, TARGCTLIOFREEUNIT, &alloc_unit) == -1) {
@ -164,7 +173,6 @@ main(int argc, char *argv[])
}
close(targctlfd);
return (0);
}
static void
@ -207,6 +215,8 @@ pump_events()
if (retval == -1) {
perror("Read from targ failed");
/* Go look for exceptions */
continue;
} else {
retval = write(ofd, buf, retval);
if (retval == -1) {
@ -248,8 +258,10 @@ handle_exception()
exit(EX_SOFTWARE);
}
printf("Saw exceptions %x\n", exceptions);
if ((exceptions & TARG_EXCEPT_DEVICE_INVALID) != 0) {
/* Device went away. Nothing more to do. */
printf("Device went away\n");
exit(0);
}