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support container to container copy

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Implement container to container copy.  Previously data could only be
copied from/to the host.

Fixes: #7370
Co-authored-by: Mehul Arora <aroram18@mcmaster.ca>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
Mehul Arora
2021-06-19 11:27:24 +05:30
committed by Valentin Rothberg
parent b6c279be22
commit 6fe03b25ab
13 changed files with 352 additions and 26 deletions
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194
test/system/065-cp.bats
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@ -226,6 +226,96 @@ load helpers
}
@test "podman cp file from container to container" {
# Create 3 files with random content in the container.
local -a randomcontent=(
random-0-$(random_string 10)
random-1-$(random_string 15)
random-2-$(random_string 20)
)
run_podman run -d --name cpcontainer --workdir=/srv $IMAGE sleep infinity
run_podman exec cpcontainer sh -c "echo ${randomcontent[0]} > /tmp/containerfile"
run_podman exec cpcontainer sh -c "echo ${randomcontent[0]} > /tmp/dotfile."
run_podman exec cpcontainer sh -c "echo ${randomcontent[1]} > /srv/containerfile1"
run_podman exec cpcontainer sh -c "mkdir /srv/subdir; echo ${randomcontent[2]} > /srv/subdir/containerfile2"
# Commit the image for testing non-running containers
run_podman commit -q cpcontainer
cpimage="$output"
# format is: <id> | <source arg to cp> | <destination arg (appended to $srcdir) to cp> | <full dest path (appended to $srcdir)> | <test name>
tests="
0 | /tmp/containerfile | | /containerfile | /
0 | /tmp/dotfile. | | /dotfile. | /
0 | /tmp/containerfile | / | /containerfile | /
0 | /tmp/containerfile | /. | /containerfile | /.
0 | /tmp/containerfile | /newfile | /newfile | /newfile
1 | containerfile1 | / | /containerfile1 | copy from workdir (rel path) to /
2 | subdir/containerfile2 | / | /containerfile2 | copy from workdir/subdir (rel path) to /
"
# From RUNNING container
while read id src dest dest_fullname description; do
# dest may be "''" for empty table cells
if [[ $dest == "''" ]];then
unset dest
fi
# To RUNNING container
run_podman run -d $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman exec $destcontainer cat "/$dest_fullname"
is "$output" "${randomcontent[$id]}" "$description (cp ctr:$src to /$dest)"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
# To CREATED container
run_podman create $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman start $destcontainer
run_podman exec $destcontainer cat "/$dest_fullname"
is "$output" "${randomcontent[$id]}" "$description (cp ctr:$src to /$dest)"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
done < <(parse_table "$tests")
run_podman kill cpcontainer
run_podman rm -f cpcontainer
# From CREATED container
run_podman create --name cpcontainer --workdir=/srv $cpimage
while read id src dest dest_fullname description; do
# dest may be "''" for empty table cells
if [[ $dest == "''" ]];then
unset dest
fi
# To RUNNING container
run_podman run -d $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman exec $destcontainer cat "/$dest_fullname"
is "$output" "${randomcontent[$id]}" "$description (cp ctr:$src to /$dest)"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
# To CREATED container
run_podman create $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman start $destcontainer
run_podman exec $destcontainer cat "/$dest_fullname"
is "$output" "${randomcontent[$id]}" "$description (cp ctr:$src to /$dest)"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
done < <(parse_table "$tests")
run_podman rm -f cpcontainer
run_podman rmi -f $cpimage
}
@test "podman cp dir from host to container" {
srcdir=$PODMAN_TMPDIR
mkdir -p $srcdir/dir/sub
@ -377,6 +467,110 @@ load helpers
}
@test "podman cp dir from container to container" {
# Create 2 files with random content in the container.
local -a randomcontent=(
random-0-$(random_string 10)
random-1-$(random_string 15)
)
run_podman run -d --name cpcontainer --workdir=/srv $IMAGE sleep infinity
run_podman exec cpcontainer sh -c "mkdir /srv/subdir; echo ${randomcontent[0]} > /srv/subdir/containerfile0"
run_podman exec cpcontainer sh -c "echo ${randomcontent[1]} > /srv/subdir/containerfile1"
# "." and "dir/." will copy the contents, so make sure that a dir ending
# with dot is treated correctly.
run_podman exec cpcontainer sh -c 'mkdir /tmp/subdir.; cp /srv/subdir/* /tmp/subdir./'
# Commit the image for testing non-running containers
run_podman commit -q cpcontainer
cpimage="$output"
# format is: <source arg to cp (appended to /srv)> | <dest> | <full dest path> | <test name>
tests="
/srv | | /srv/subdir | copy /srv
/srv | /newdir | /newdir/subdir | copy /srv to /newdir
/srv/ | | /srv/subdir | copy /srv/
/srv/. | | /subdir | copy /srv/.
/srv/. | /newdir | /newdir/subdir | copy /srv/. to /newdir
/srv/subdir/. | | | copy /srv/subdir/.
/tmp/subdir. | | /subdir. | copy /tmp/subdir.
"
# From RUNNING container
while read src dest dest_fullname description; do
if [[ $src == "''" ]];then
unset src
fi
if [[ $dest == "''" ]];then
unset dest
fi
if [[ $dest_fullname == "''" ]];then
unset dest_fullname
fi
# To RUNNING container
run_podman run -d $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman exec $destcontainer cat "/$dest_fullname/containerfile0" "/$dest_fullname/containerfile1"
is "$output" "${randomcontent[0]}
${randomcontent[1]}" "$description"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
# To CREATED container
run_podman create $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman start $destcontainer
run_podman exec $destcontainer cat "/$dest_fullname/containerfile0" "/$dest_fullname/containerfile1"
is "$output" "${randomcontent[0]}
${randomcontent[1]}" "$description"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
done < <(parse_table "$tests")
run_podman kill cpcontainer
run_podman rm -f cpcontainer
# From CREATED container
run_podman create --name cpcontainer --workdir=/srv $cpimage
while read src dest dest_fullname description; do
if [[ $src == "''" ]];then
unset src
fi
if [[ $dest == "''" ]];then
unset dest
fi
if [[ $dest_fullname == "''" ]];then
unset dest_fullname
fi
# To RUNNING container
run_podman run -d $IMAGE sleep infinity
destcontainer="$output"
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman exec $destcontainer cat "/$dest_fullname/containerfile0" "/$dest_fullname/containerfile1"
is "$output" "${randomcontent[0]}
${randomcontent[1]}" "$description"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
# To CREATED container
run_podman create $IMAGE sleep infinity
destcontainer="$output"
run_podman start $destcontainer
run_podman cp cpcontainer:$src $destcontainer:"/$dest"
run_podman exec $destcontainer cat "/$dest_fullname/containerfile0" "/$dest_fullname/containerfile1"
is "$output" "${randomcontent[0]}
${randomcontent[1]}" "$description"
run_podman kill $destcontainer
run_podman rm -f $destcontainer
done < <(parse_table "$tests")
run_podman rm -f cpcontainer
run_podman rmi -f $cpimage
}
@test "podman cp symlinked directory from container" {
destdir=$PODMAN_TMPDIR/cp-weird-symlink
mkdir -p $destdir