Re: mount weirdness

From	"Thomas Schmitt" <scdbackup@gmx.net>
Newsgroups	linux.debian.user
Subject	Re: mount weirdness
Date	2019-08-07 23:30 +0200
Message-ID	<ysBFn-4Im-1@gated-at.bofh.it> (permalink)
References	<ysyob-2xo-19@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,

i wrote:
> >    mount -v /dev/sdc /wa1
> >    echo $?

Duh. "/dev/sdb2", not "/dev/sdc".
(Do as i mean, not as i write.)

Dennis Wicks wrote:
> I'll put a note in my fstab so the next time I boot I can find it if the
> mount fails again!

Did i miss the report about some miracle cure beyond the link to /wa11 ?

I did a search for "wa1" in Linux kernel git.
  https://github.com/torvalds/linux/search?utf8=%E2%9C%93&q=wa1&type=
The name seems not to be hardcoded there.
So my best guess is that it is mistaken by mount(8) for something other
than a target path.

This opportunity to be mistaken could be excluded by a test program
which uses mount(2).
I tested this program "ts_mount.c":

-------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <errno.h>
#include <string.h>

int main()
{
 int ret;

 ret = mount("/dev/sr4", "/mnt/iso", "iso9660", MS_RDONLY, "");
 if(ret == 0) {
   printf("Success\n");
   exit(0);
 }
 printf("Failed\n");
 printf("errno= %d (%s)\n", errno, strerror(errno));
 exit(1);
}
-------------------------------------------------------------------------

with a DVD drive by:

  cc -g -Wall -o ts_mount ts_mount.c
  ./ts_mount

As normal user i got

  Failed
  errno= 1 (Operation not permitted)

and as superuser

  Success

Drive noise and listed files confirm the optimistic message.
Without medium i get

  Failed
  errno= 123 (No medium found)

Have a nice day :)

Thomas

Thread

mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-05 22:40 +0200
  Re: mount weirdness Andrei POPESCU <andreimpopescu@gmail.com> - 2019-08-06 08:10 +0200
    Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-06 17:10 +0200
      Re: mount weirdness rhkramer@gmail.com - 2019-08-06 17:40 +0200
        Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-06 19:40 +0200
          Re: mount weirdness Richard Hector <richard@walnut.gen.nz> - 2019-08-06 19:50 +0200
            Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-06 20:00 +0200
              Re: mount weirdness Richard Hector <richard@walnut.gen.nz> - 2019-08-06 20:20 +0200
      Re: mount weirdness Felix Miata <mrmazda@earthlink.net> - 2019-08-06 17:40 +0200
        Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-06 19:30 +0200
  Re: mount weirdness "Thomas Schmitt" <scdbackup@gmx.net> - 2019-08-06 17:40 +0200
    Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-06 19:20 +0200
      Re: mount weirdness David Wright <deblis@lionunicorn.co.uk> - 2019-08-06 20:50 +0200
        Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-07 19:50 +0200
          Re: mount weirdness Greg Wooledge <wooledg@eeg.ccf.org> - 2019-08-07 20:00 +0200
          Re: mount weirdness David Wright <deblis@lionunicorn.co.uk> - 2019-08-07 22:50 +0200
      Re: mount weirdness "Thomas Schmitt" <scdbackup@gmx.net> - 2019-08-06 21:00 +0200
        Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-07 20:00 +0200
          Re: mount weirdness "Thomas Schmitt" <scdbackup@gmx.net> - 2019-08-07 23:30 +0200
  Re: mount weirdness Curt <curty@free.fr> - 2019-08-08 10:20 +0200
    Re: mount weirdness Curt <curty@free.fr> - 2019-08-08 10:50 +0200
      Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-09 21:20 +0200
    Re: mount weirdness "Thomas Schmitt" <scdbackup@gmx.net> - 2019-08-08 12:00 +0200
      Re: mount weirdness Curt <curty@free.fr> - 2019-08-08 14:40 +0200
      Re: mount weirdness Michael Stone <mstone@debian.org> - 2019-08-08 14:40 +0200
        Re: mount weirdness Curt <curty@free.fr> - 2019-08-08 15:00 +0200
    Re: mount weirdness David Wright <deblis@lionunicorn.co.uk> - 2019-08-08 16:10 +0200
      Re: mount weirdness Michael Stone <mstone@debian.org> - 2019-08-08 17:00 +0200
        Re: mount weirdness David Wright <deblis@lionunicorn.co.uk> - 2019-08-08 19:10 +0200
          Re: mount weirdness Greg Wooledge <wooledg@eeg.ccf.org> - 2019-08-08 19:20 +0200
          Re: mount weirdness Michael Stone <mstone@debian.org> - 2019-08-08 20:20 +0200
            Re: mount weirdness David Wright <deblis@lionunicorn.co.uk> - 2019-08-09 18:30 +0200
              Re: mount weirdness Greg Wooledge <wooledg@eeg.ccf.org> - 2019-08-09 19:00 +0200
                Re: mount weirdness "Thomas Schmitt" <scdbackup@gmx.net> - 2019-08-09 20:00 +0200
      Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-09 22:00 +0200
    Re: mount weirdness Dennis Wicks <wix@mgssub.com> - 2019-08-09 21:20 +0200

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