On Wed, Jul 05, 2017 at 10:06:49AM +0100, Chris Clayton wrote:
> I'll do this and send dmesg(?) output as soon as I've got scsi_logging_level
> installed.
Hi Chris,
does this reproducer work (i.e. output FAIL) for you?
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <scsi/sg.h>
int main(int argc, char **argv)
{
int fd;
int rc;
int rsz = 131072;
int tout = 10800000;
char buf[42] = { 0 };
if (argc != 2) {
printf("usage: %s /dev/sgX\n", argv[0]);
return 1;
}
fd = open(argv[1], O_RDWR);
if (fd < 0) {
perror("open");
return 1;
}
rc = ioctl(fd, SG_SET_RESERVED_SIZE, &rsz);
if (rc < 0) {
perror("ioctl SG_SET_RESERVED_SIZE");
goto out_close;
}
rc = ioctl(fd, SG_SET_TIMEOUT, &tout);
if (rc < 0) {
perror("ioctl SG_SET_TIMEOUT");
goto out_close;
}
buf[4] = 'H';
rc = write(fd, &buf, sizeof(buf));
if (rc < 0) {
perror("write");
if (errno == EINVAL)
printf("FAIL\n");
goto out_close;
}
printf("PASS\n");
out_close:
close(fd);
}
--
Johannes Thumshirn Storage
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