writing "- - -" to /sys/class/scsi_host/...

"Ulrich Windl" <Ulrich.Windl@xxxxxxxxxxxxxxxxxxxx> · Tue, 03 May 2011 12:54:47 +0200

Hello,

I was trying to find out the meaning of "- - -" in the magic command to scan a SCSI host. After finding the code in the sources (after extensive searching), I'm wondering (2.6.16.60, scsi_sysfs.c):

static int check_set(unsigned int *val, char *src)
{
        char *last;

        if (strncmp(src, "-", 20) == 0) {
                *val = SCAN_WILD_CARD;
        } else {
[...]

If it's still there in the current sources, does that "20" do anything useful? The comparison should end at the second character anyway. "-" is always zero-terminated. Did I miss something?

Regards,
Ulrich
P.S. Please CC me if your reply should reach me, I'm not subscribed in the list!

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