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authorValentin Rothberg <vrothberg@suse.com>2018-10-05 14:36:27 +0200
committerValentin Rothberg <vrothberg@suse.com>2018-10-05 17:28:18 +0200
commitd4eca12cc12734f2b578e1b1967d69889c21c487 (patch)
tree872d4e8270a2778a4c995d30cd3011682b1ebfb2 /cmd/podman/shared
parent094b8b73505cb084d632ebb08e2a014e68f5e1b1 (diff)
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runlabel: execute /proc/self/exe and avoid recursion
Execute /proc/self/exe instead of podman. This makes the runlabel command more portable as it works for binaries outside the path as well as for local builds. Also, avoid redundantly executing the runlabel command by setting the PODMAN_RUNLABEL_NESTED environment variable to "1". Podman now checks for this variable before executing the runlabel command and will throw an error in case the variable is set. Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Diffstat (limited to 'cmd/podman/shared')
-rw-r--r--cmd/podman/shared/funcs.go5
-rw-r--r--cmd/podman/shared/funcs_test.go10
2 files changed, 7 insertions, 8 deletions
diff --git a/cmd/podman/shared/funcs.go b/cmd/podman/shared/funcs.go
index 5c401634c..21e7fe10d 100644
--- a/cmd/podman/shared/funcs.go
+++ b/cmd/podman/shared/funcs.go
@@ -15,9 +15,8 @@ func GenerateCommand(command, imageName, name string) []string {
name = imageName
}
cmd := strings.Split(command, " ")
- // Replace the first position of cmd with podman whether
- // it is docker, /usr/bin/docker, or podman
- newCommand = append(newCommand, "podman")
+ // Replace the first element of cmd with "/proc/self/exe"
+ newCommand = append(newCommand, "/proc/self/exe")
for _, arg := range cmd[1:] {
var newArg string
switch arg {
diff --git a/cmd/podman/shared/funcs_test.go b/cmd/podman/shared/funcs_test.go
index 3d0ac005f..612be480b 100644
--- a/cmd/podman/shared/funcs_test.go
+++ b/cmd/podman/shared/funcs_test.go
@@ -15,35 +15,35 @@ var (
func TestGenerateCommand(t *testing.T) {
inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "podman run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+ correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
newCommand := GenerateCommand(inputCommand, "foo", "bar")
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}
func TestGenerateCommandPath(t *testing.T) {
inputCommand := "/usr/bin/docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "podman run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+ correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
newCommand := GenerateCommand(inputCommand, "foo", "bar")
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}
func TestGenerateCommandNoSetName(t *testing.T) {
inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "podman run -it --name foo -e NAME=foo -e IMAGE=foo foo echo install"
+ correctCommand := "/proc/self/exe run -it --name foo -e NAME=foo -e IMAGE=foo foo echo install"
newCommand := GenerateCommand(inputCommand, "foo", "")
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}
func TestGenerateCommandNoName(t *testing.T) {
inputCommand := "docker run -it -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "podman run -it -e IMAGE=foo foo echo install"
+ correctCommand := "/proc/self/exe run -it -e IMAGE=foo foo echo install"
newCommand := GenerateCommand(inputCommand, "foo", "")
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}
func TestGenerateCommandAlreadyPodman(t *testing.T) {
inputCommand := "podman run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "podman run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+ correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
newCommand := GenerateCommand(inputCommand, "foo", "bar")
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}