Re: [Qemu-devel] [Bug 1709170] [NEW] QEMU fails to honor O_TMPFILE

2017-08-08 Thread Riku Voipio 
On Mon, Aug 07, 2017 at 08:18:04PM -, Thiago Macieira wrote:
> Public bug reported:
> 
> When making a call like
> 
>   open("/tmp", O_TMPFILE | O_RDWR);
> 
> under QEMU, we ged -EISDIR.
> 
> Under any kernel 3.11 or later, we are supposed to get an unnamed file
> in /tmp. In case the filesystem for /tmp does not support unnamed files,
> we are supposed to get EOPNOTSUPP.

Actually, -EISDIR is valid error when underlying system doesn't support 
O_TMPFILE.
See man openat or the kernel definition for O_TMPFILE.

Regardless, I'm submitting a patch to properly translate the O_TMPFILE.

Riku

[Qemu-devel] [Bug 1709170] [NEW] QEMU fails to honor O_TMPFILE

2017-08-07 Thread Thiago Macieira 
Public bug reported:

When making a call like

  open("/tmp", O_TMPFILE | O_RDWR);

under QEMU, we ged -EISDIR.

Under any kernel 3.11 or later, we are supposed to get an unnamed file
in /tmp. In case the filesystem for /tmp does not support unnamed files,
we are supposed to get EOPNOTSUPP.

[I don't know the QEMU version, since this happened in a system I don't
have access to]

** Affects: qemu
 Importance: Undecided
 Status: New

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https://bugs.launchpad.net/bugs/1709170

Title:
  QEMU fails to honor O_TMPFILE

Status in QEMU:
  New

Bug description:
  When making a call like

open("/tmp", O_TMPFILE | O_RDWR);

  under QEMU, we ged -EISDIR.

  Under any kernel 3.11 or later, we are supposed to get an unnamed file
  in /tmp. In case the filesystem for /tmp does not support unnamed
  files, we are supposed to get EOPNOTSUPP.

  [I don't know the QEMU version, since this happened in a system I
  don't have access to]

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