Re: linux-2.6.25: 'mkdir -p' does not work with rootdir as mount point inside a read only filesystem

[Lothar Waßmann]

Hi,

Willy Tarreau writes:
> > > open(".", O_RDONLY|O_LARGEFILE|O_DIRECTORY) = 3
> > > chdir("/")                              = 0
> > > mkdir("dev", 0755)                      = -1 EEXIST (File exists)
                                                   ^^^^^^
[...]
> > This is what strace shows in my case:
> > mkdir("/", 0777)                        = -1 EEXIST (File exists)
> > stat64("/", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
> > mkdir("/dev/", 0777)                    = -1 EROFS (Read-only file system)
                                                 ^^^^^
> What puzzles me is why you have this problem only with a new kernel.
> I suspect that previous ones did report EEXIST and now we report
> EROFS for an existing directory on an ro fs.
> 
Interestingly your strace output showed a return value of EEXIST where
mine had EROFS.


Lothar Waßmann
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