command.Start() just starts the command. That catches some
errors, but the nasty ones - bad options and similar - happen
when the command runs. Use CombinedOutput() instead - it waits
for the command to exit, and thus catches non-0 exit of the
`mount` command (invalid options, for example).
STDERR from the `mount` command is directly used, which isn't
necessarily the best, but we can't really get much more info on
what went wrong.
Fixes#4303
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This matches Docker more closely, but retains the more important
protections of nosuid/nodev.
Fixes#4318
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Previously, when `podman run` encountered a volume mount without
separate source and destination (e.g. `-v /run`) we would assume
that both were the same - a bind mount of `/run` on the host to
`/run` in the container. However, this does not match Docker's
behavior - in Docker, this makes an anonymous named volume that
will be mounted at `/run`.
We already have (more limited) support for these anonymous
volumes in the form of image volumes. Extend this support to
allow it to be used with user-created volumes coming in from the
`-v` flag.
This change also affects how named volumes created by the
container but given names are treated by `podman run --rm` and
`podman rm -v`. Previously, they would be removed with the
container in these cases, but this did not match Docker's
behaviour. Docker only removed anonymous volumes. With this patch
we move to that model as well; `podman run -v testvol:/test` will
not have `testvol` survive the container being removed by `podman
rm -v`.
The sum total of these changes let us turn on volume removal in
`--rm` by default.
Fixes: #4276
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Rather than checking for non-zero, we need to check for >0 to
distinguish between timeouts and error exit codes.
Signed-off-by: Jhon Honce <jhonce@redhat.com>
When a named volume is mounted on any of the tmpfs filesystems
created by read-only tmpfs, it caused a conflict that was not
resolved prior to this.
Fixes BZ1755119
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Previously, we only did this for volumes created at the same time
as the container. However, this is not correct behavior - Docker
does so for all named volumes, even those made with
'podman volume create' and mounted into a container later.
Fixes#3945
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
When volume options and the local volume driver are specified,
the volume is intended to be mounted using the 'mount' command.
Supported options will be used to volume the volume before the
first container using it starts, and unmount the volume after the
last container using it dies.
This should work for any local filesystem, though at present I've
only tested with tmpfs and btrfs.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This will require a 'podman system renumber' after being applied
to get lock numbers for existing volumes.
Add the DB backend code for rewriting volume configs and use it
for updating lock numbers as part of 'system renumber'.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
The 'podman run --mount' flag previously allowed the 'ro' option
to be specified, but was missing the ability to set it to a bool
(as is allowed by docker). Add that. While we're at it, allow
setting 'rw' explicitly as well.
Fixes#2980
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
when doing localized tests (not varlink), we can use secondary image
stores as read-only image caches. this cuts down on test time
significantly because each test does not need to restore the images from
a tarball anymore.
Signed-off-by: baude <bbaude@redhat.com>
When running inside Podman, we get an extra `nodev` mount option.
It doesn't seem to be a bug, more an artifact of running in a
somewhat locked-down container. So instead of checking explicitly
for a set of mount options, just verify the ones we set are
present.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
