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[v3.0.1-rhel] podman cp: ignore EPERMs in rootless mode #9732

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merged 3 commits into from
Mar 17, 2021
+49 −26
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[v3.0.1-rhel] podman cp: ignore EPERMs in rootless mode #9732

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5f92883
vendor [email protected]
vrothberg Mar 17, 2021
6d6c50a
podman cp: ignore EPERMs in rootless mode
vrothberg Mar 5, 2021
82c35bf
Fix remote client timezone test
Mar 15, 2021
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2 changes: 2 additions & 0 deletions docs/source/markdown/podman-cp.1.md
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Expand Up @@ -57,6 +57,8 @@ If you use a : in a local machine path, you must be explicit with a relative or

Using `-` as the *src_path* streams the contents of STDIN as a tar archive. The command extracts the content of the tar to the *DEST_PATH* in the container. In this case, *dest_path* must specify a directory. Using `-` as the *dest_path* streams the contents of the resource (can be a directory) as a tar archive to STDOUT.

Note that `podman cp` ignores permission errors when copying from a running rootless container. The TTY devices inside a rootless container are owned by the host's root user and hence cannot be read inside the container's user namespace.

## OPTIONS

## ALTERNATIVES
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2 changes: 1 addition & 1 deletion go.mod
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Expand Up @@ -10,7 +10,7 @@ require (
github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
github.com/containernetworking/cni v0.8.1
github.com/containernetworking/plugins v0.9.0
github.com/containers/buildah v1.19.7
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This will give us a higher version of Buildah vendored into Podman than we have available on RHEL (v1.19.6).

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Not sure what that implies. We need .7 to fix the issue.

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Just concerned that if you run Buildah you could get different behavior than running podman build. I'm probably over-fretting.

github.com/containers/buildah v1.19.8
github.com/containers/common v0.33.4
github.com/containers/conmon v2.0.20+incompatible
github.com/containers/image/v5 v5.10.5
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16 changes: 2 additions & 14 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -89,20 +89,18 @@ github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448/go.mod h1:ODA38xgv
github.com/containerd/go-runc v0.0.0-20180907222934-5a6d9f37cfa3/go.mod h1:IV7qH3hrUgRmyYrtgEeGWJfWbgcHL9CSRruz2Vqcph0=
github.com/containerd/ttrpc v0.0.0-20190828154514-0e0f228740de/go.mod h1:PvCDdDGpgqzQIzDW1TphrGLssLDZp2GuS+X5DkEJB8o=
github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd/go.mod h1:Cm3kwCdlkCfMSHURc+r6fwoGH6/F1hH3S4sg0rLFWPc=
github.com/containernetworking/cni v0.8.0 h1:BT9lpgGoH4jw3lFC7Odz2prU5ruiYKcgAjMCbgybcKI=
github.com/containernetworking/cni v0.8.0/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
github.com/containernetworking/cni v0.8.1 h1:7zpDnQ3T3s4ucOuJ/ZCLrYBxzkg0AELFfII3Epo9TmI=
github.com/containernetworking/cni v0.8.1/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
github.com/containernetworking/plugins v0.8.7/go.mod h1:R7lXeZaBzpfqapcAbHRW8/CYwm0dHzbz0XEjofx0uB0=
github.com/containernetworking/plugins v0.9.0 h1:c+1gegKhR7+d0Caum9pEHugZlyhXPOG6v3V6xJgIGCI=
github.com/containernetworking/plugins v0.9.0/go.mod h1:dbWv4dI0QrBGuVgj+TuVQ6wJRZVOhrCQj91YyC92sxg=
github.com/containers/buildah v1.19.7 h1:/g11GlhTo177xFex+5GHlF22hq01SyWaJuSA26UGFNU=
github.com/containers/buildah v1.19.7/go.mod h1:VnyHWgNmfR1d89/zJ/F4cbwOzaQS+6sBky46W7dCo3E=
github.com/containers/buildah v1.19.8 h1:4TzmetfKPQF5hh6GgMwbAfrD50j+PAcsRiWDnx+gCI8=
github.com/containers/buildah v1.19.8/go.mod h1:VnyHWgNmfR1d89/zJ/F4cbwOzaQS+6sBky46W7dCo3E=
github.com/containers/common v0.33.4 h1:f1jowItfo6xw0bZGZq8oE5dw1pBIkldqB0FqW+HHzG8=
github.com/containers/common v0.33.4/go.mod h1:PhgL71XuC4jJ/1BIqeP7doke3aMFkCP90YBXwDeUr9g=
github.com/containers/conmon v2.0.20+incompatible h1:YbCVSFSCqFjjVwHTPINGdMX1F6JXHGTUje2ZYobNrkg=
github.com/containers/conmon v2.0.20+incompatible/go.mod h1:hgwZ2mtuDrppv78a/cOBNiCm6O0UMWGx1mu7P00nu5I=
github.com/containers/image/v5 v5.10.1 h1:tHhGQ8RCMxJfJLD/PEW1qrOKX8nndledW9qz6UiAxns=
github.com/containers/image/v5 v5.10.1/go.mod h1:JlRLJZv7elVbtHaaaR6Kz8i6G3k2ttj4t7fubwxD9Hs=
github.com/containers/image/v5 v5.10.2/go.mod h1:JlRLJZv7elVbtHaaaR6Kz8i6G3k2ttj4t7fubwxD9Hs=
github.com/containers/image/v5 v5.10.5 h1:VK1UbsZMzjdw5Xqr3Im9h4iOqHWU0naFs+I78kavc7I=
Expand All @@ -113,7 +111,6 @@ github.com/containers/ocicrypt v1.0.3 h1:vYgl+RZ9Q3DPMuTfxmN+qp0X2Bj52uuY2vnt6Gz
github.com/containers/ocicrypt v1.0.3/go.mod h1:CUBa+8MRNL/VkpxYIpaMtgn1WgXGyvPQj8jcy0EVG6g=
github.com/containers/psgo v1.5.2 h1:3aoozst/GIwsrr/5jnFy3FrJay98uujPCu9lTuSZ/Cw=
github.com/containers/psgo v1.5.2/go.mod h1:2ubh0SsreMZjSXW1Hif58JrEcFudQyIy9EzPUWfawVU=
github.com/containers/storage v1.24.5 h1:BusfdU0rCS2/Daa/DPw+0iLfGRlYA7UVF7D0el3N7Vk=
github.com/containers/storage v1.24.5/go.mod h1:YC+2pY8SkfEAcZkwycxYbpK8EiRbx5soPPwz9dxe4IQ=
github.com/containers/storage v1.24.6/go.mod h1:YC+2pY8SkfEAcZkwycxYbpK8EiRbx5soPPwz9dxe4IQ=
github.com/containers/storage v1.24.8 h1:v3pliVY5Jx1ZNJDoyCvRBrXMxlGLakBsxbBVWoaCI8Q=
Expand All @@ -132,7 +129,6 @@ github.com/coreos/go-systemd/v22 v22.1.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/creack/pty v1.1.9 h1:uDmaGzcdjhF4i/plgjmEsriH11Y0o7RKapEf/LDaM3w=
github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
Expand All @@ -154,7 +150,6 @@ github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BU
github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
github.com/docker/docker v1.4.2-0.20191219165747-a9416c67da9f/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v17.12.0-ce-rc1.0.20200505174321-1655290016ac+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v17.12.0-ce-rc1.0.20201020191947-73dc6a680cdd+incompatible h1:+0LETFJcCLdIqdtEbVWF1JIxATqM15Y4sLiMcWOYq2U=
github.com/docker/docker v17.12.0-ce-rc1.0.20201020191947-73dc6a680cdd+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v20.10.0-beta1.0.20201113105859-b6bfff2a628f+incompatible h1:lwpV3629md5omgAKjxPWX17shI7vMRpE3nyb9WHn8pA=
github.com/docker/docker v20.10.0-beta1.0.20201113105859-b6bfff2a628f+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
Expand Down Expand Up @@ -222,7 +217,6 @@ github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a
github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
Expand Down Expand Up @@ -340,7 +334,6 @@ github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7V
github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/klauspost/compress v1.11.5 h1:xNCE0uE6yvTPRS+0wGNMHPo3NIpwnk6aluQZ6R6kRcc=
github.com/klauspost/compress v1.11.5/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
github.com/klauspost/compress v1.11.7 h1:0hzRabrMN4tSTvMfnL3SCv1ZGeAP23ynzodBgaHeMeg=
github.com/klauspost/compress v1.11.7/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
Expand Down Expand Up @@ -674,7 +667,6 @@ golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/
golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
Expand Down Expand Up @@ -743,13 +735,10 @@ golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20201112073958-5cba982894dd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201117170446-d9b008d0a637/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3 h1:kzM6+9dur93BcC2kVlYl34cHU+TYZLanmpSJHVMmL64=
golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201218084310-7d0127a74742 h1:+CBz4km/0KPU3RGTwARGh/noP3bEwtHcq+0YcBQM2JQ=
golang.org/x/sys v0.0.0-20201218084310-7d0127a74742/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4 h1:myAQVi0cGEoqQVR5POX+8RR2mrocKqNN1hmeMqhX27k=
golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/term v0.0.0-20201117132131-f5c789dd3221 h1:/ZHdbVpdR/jk3g30/d4yUL0JU9kksj8+F/bnQUVLGDM=
golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
Expand Down Expand Up @@ -818,7 +807,6 @@ google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ij
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
google.golang.org/grpc v1.27.0 h1:rRYRFMVgRv6E0D70Skyfsr28tDXIuuPZyWGMPdMcnXg=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/grpc v1.29.1 h1:EC2SB8S04d2r73uptxphDSUG+kTKVgjRPF+N3xpxRB4=
google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
Expand Down
6 changes: 6 additions & 0 deletions libpod/container_copy_linux.go
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Expand Up @@ -14,6 +14,7 @@ import (
"github.com/containers/buildah/pkg/chrootuser"
"github.com/containers/buildah/util"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/rootless"
"github.com/containers/storage/pkg/idtools"
"github.com/docker/docker/pkg/archive"
"github.com/opencontainers/runtime-spec/specs-go"
Expand Down Expand Up @@ -153,6 +154,11 @@ func (c *Container) copyToArchive(ctx context.Context, path string, writer io.Wr
ChownDirs: &idPair,
ChownFiles: &idPair,
Excludes: []string{"dev", "proc", "sys"},
// Ignore EPERMs when copying from rootless containers
// since we cannot read TTY devices. Those are owned
// by the host's root and hence "nobody" inside the
// container's user namespace.
IgnoreUnreadable: rootless.IsRootless() && c.state.State == define.ContainerStateRunning,
}
return c.joinMountAndExec(ctx,
func() error {
Expand Down
2 changes: 1 addition & 1 deletion test/e2e/containers_conf_test.go
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Expand Up @@ -311,7 +311,7 @@ var _ = Describe("Podman run", func() {
session = podmanTest.Podman([]string{"run", ALPINE, "date", "+'%H %Z'"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(session.OutputToString()).To(ContainSubstring("EST"))
Expect(session.OutputToString()).To(Or(ContainSubstring("EST"), ContainSubstring("EDT")))

// Umask
session = podmanTest.Podman([]string{"run", "--rm", ALPINE, "sh", "-c", "umask"})
Expand Down
1 change: 0 additions & 1 deletion test/e2e/cp_test.go
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Expand Up @@ -212,7 +212,6 @@ var _ = Describe("Podman cp", func() {

// Copy the root dir "/" of a container to the host.
It("podman cp the root directory from the ctr to an existing directory on the host ", func() {
SkipIfRootless("cannot copy tty devices in rootless mode")
container := "copyroottohost"
session := podmanTest.RunTopContainer(container)
session.WaitWithDefaultTimeout()
Expand Down
2 changes: 1 addition & 1 deletion vendor/github.com/containers/buildah/buildah.go
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42 changes: 35 additions & 7 deletions vendor/github.com/containers/buildah/copier/copier.go
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2 changes: 1 addition & 1 deletion vendor/modules.txt
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Expand Up @@ -70,7 +70,7 @@ github.com/containernetworking/plugins/pkg/utils/hwaddr
github.com/containernetworking/plugins/pkg/utils/sysctl
github.com/containernetworking/plugins/plugins/ipam/host-local/backend
github.com/containernetworking/plugins/plugins/ipam/host-local/backend/allocator
# github.com/containers/buildah v1.19.7
# github.com/containers/buildah v1.19.8
github.com/containers/buildah
github.com/containers/buildah/bind
github.com/containers/buildah/chroot
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