Physical location of Posix message queues

[William Beebe]

I'm porting an application from Solaris to Fedora Core. Everything is
fine except for one issue regarding the use of Posix message queues.
In order to solve this problem I'd like to know where the message
queues are physically located. Where on Fedora Core (or Linux for that
matter) are the message queues located? I've tried just looking on the
file system and I've tried looking in the code for a Clue (both the
kernel and glibc). If someone could just tell me, or if there are
pointers to other documentation explaining some of the finer details
of Posix message queue implementation on Linux I'd appreciate it.

[Pedro Lamarão]

William Beebe wrote:
>  I'm porting an application from Solaris to Fedora Core.
> Everything is
>  fine except for one issue regarding the use of Posix message queues.
>  In order to solve this problem I'd like to know where the message
>  queues are physically located. Where on Fedora Core (or Linux for that
>  matter) are the message queues located? I've tried just looking on the
>  file system and I've tried looking in the code for a Clue (both the
>  kernel and glibc). If someone could just tell me, or if there are
>  pointers to other documentation explaining some of the finer details
>  of Posix message queue implementation on Linux I'd appreciate it.
>   
Check /var/spool/postfix .

-- 
 Pedro Lamarão

 "Merda faz as flores crescerem
  e isso é bonito."

[Pedro Lamarão]

Pedro Lamarão wrote:
>  William Beebe wrote:
>  
> >I'm porting an application from Solaris to Fedora Core. Everything is
> >fine except for one issue regarding the use of Posix message queues.
> >In order to solve this problem I'd like to know where the message
> >queues are physically located. Where on Fedora Core (or Linux for that
> >matter) are the message queues located? I've tried just looking on the
> >file system and I've tried looking in the code for a Clue (both the
> >kernel and glibc). If someone could just tell me, or if there are
> >pointers to other documentation explaining some of the finer details
> >of Posix message queue implementation on Linux I'd appreciate it.
> >
>  
>  
>  Check /var/spool/postfix .
>   
I'm feeling ridiculous.
I swear I read "Postfix". :|

-- 
 Pedro Lamarão

 "Merda faz as flores crescerem
  e isso é bonito."

[Arjan van de Ven]

On Wed, 2005-05-25 at 19:27 -0400, William Beebe wrote:
>  I'm porting an application from Solaris to Fedora Core.
> Everything is
>  fine except for one issue regarding the use of Posix message queues.
>  In order to solve this problem I'd like to know where the message
>  queues are physically located.  
what do you mean by "physically located" ???

[Nicholas Miell]

On Thu, 2005-05-26 at 18:19 +0200, Arjan van de Ven wrote:
>  On Wed, 2005-05-25 at 19:27 -0400, William Beebe wrote:
>  > I'm porting an application from Solaris to Fedora Core. Everything is
>  > fine except for one issue regarding the use of Posix message queues.
>  > In order to solve this problem I'd like to know where the message
>  > queues are physically located. 
>  
>  what do you mean by "physically located" ???
>   
On Solaris, POSIX message queues have a physical representation on the
filesystem.

Linux just uses a small virtual filesystem which typically isn't even
mounted. Note that the use of the mq_* syscalls doesn't require the
mqueue fs to be mounted.

-- 
Nicholas Miell <nmiell(a)comcast.net&gt;

[William Beebe]

That's what I thought, but I wasn't sure. Thanks.

On 5/26/05, Nicholas Miell <nmiell(a)comcast.net&gt; wrote:
>  On Thu, 2005-05-26 at 18:19 +0200, Arjan van de Ven wrote:
>  > On Wed, 2005-05-25 at 19:27 -0400, William Beebe wrote:
>  > > I'm porting an application from Solaris to Fedora Core. Everything is
>  > > fine except for one issue regarding the use of Posix message queues.
>  > > In order to solve this problem I'd like to know where the message
>  > > queues are physically located [on the file system].
>  >
>  > what do you mean by "physically located" ???
>  >
>  
>  On Solaris, POSIX message queues have a physical representation on the
>  filesystem.
>  
>  Linux just uses a small virtual filesystem which typically isn't even
>  mounted. Note that the use of the mq_* syscalls doesn't require the
>  mqueue fs to be mounted.
>  
>  --
>  Nicholas Miell <nmiell(a)comcast.net&gt;
>  
>