[Qemu-devel] [Bug 1785902] [NEW] local/9pfs: Too many levels of symbolic links

[Enrico Weigelt, metux IT consult]

Public bug reported:

Version: 2.9.1

The primary symptom is resolving symlink fails w/ error "too many levels
of symbolic links".

My analysis showed that local_readlink() uses local_open_nofollow() to
open the file and then tries to read it. local_open_nofollow() then
tries to open the file w/ O_NOFOLLOW, which obviously fails if the
requested file is a symlink.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1785902

Title:
  local/9pfs: Too many levels of symbolic links

Status in QEMU:
  New

Bug description:
  Version: 2.9.1

  The primary symptom is resolving symlink fails w/ error "too many
  levels of symbolic links".

  My analysis showed that local_readlink() uses local_open_nofollow() to
  open the file and then tries to read it. local_open_nofollow() then
  tries to open the file w/ O_NOFOLLOW, which obviously fails if the
  requested file is a symlink.

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