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rootless: change env prefix

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from _LIBPOD to _CONTAINERS.  The same change was done in buildah
unshare.

This is necessary for podman to detect we are running in a rootless
environment and work properly from a "buildah unshare" session.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2019-03-28 09:20:25 +01:00
parent 850326cc19
commit ce0ca0d459
3 changed files with 17 additions and 17 deletions
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22
pkg/rootless/rootless_linux.go
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@ -29,7 +29,7 @@ extern int reexec_userns_join(int userns, int mountns);
import "C"
func runInUser() error {
os.Setenv("_LIBPOD_USERNS_CONFIGURED", "done")
os.Setenv("_CONTAINERS_USERNS_CONFIGURED", "done")
return nil
}
@ -41,7 +41,7 @@ var (
// IsRootless tells us if we are running in rootless mode
func IsRootless() bool {
isRootlessOnce.Do(func() {
isRootless = os.Geteuid() != 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != ""
isRootless = os.Geteuid() != 0 || os.Getenv("_CONTAINERS_USERNS_CONFIGURED") != ""
})
return isRootless
}
@ -62,12 +62,12 @@ func SkipStorageSetup() bool {
// Argument returns the argument that was set for the rootless session.
func Argument() string {
return os.Getenv("_LIBPOD_ROOTLESS_ARG")
return os.Getenv("_CONTAINERS_ROOTLESS_ARG")
}
// GetRootlessUID returns the UID of the user in the parent userNS
func GetRootlessUID() int {
uidEnv := os.Getenv("_LIBPOD_ROOTLESS_UID")
uidEnv := os.Getenv("_CONTAINERS_ROOTLESS_UID")
if uidEnv != "" {
u, _ := strconv.Atoi(uidEnv)
return u
@ -107,7 +107,7 @@ func tryMappingTool(tool string, pid int, hostID int, mappings []idtools.IDMap)
// JoinNS re-exec podman in a new userNS and join the user namespace of the specified
// PID.
func JoinNS(pid uint, preserveFDs int) (bool, int, error) {
if os.Geteuid() == 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != "" {
if os.Geteuid() == 0 || os.Getenv("_CONTAINERS_USERNS_CONFIGURED") != "" {
return false, -1, nil
}
@ -149,7 +149,7 @@ func JoinDirectUserAndMountNS(pid uint) (bool, int, error) {
// mount namespace of the specified PID without looking up its parent. Useful to join
// directly the conmon process.
func JoinDirectUserAndMountNSWithOpts(pid uint, opts *Opts) (bool, int, error) {
if os.Geteuid() == 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != "" {
if os.Geteuid() == 0 || os.Getenv("_CONTAINERS_USERNS_CONFIGURED") != "" {
return false, -1, nil
}
@ -166,7 +166,7 @@ func JoinDirectUserAndMountNSWithOpts(pid uint, opts *Opts) (bool, int, error) {
defer userNS.Close()
if opts != nil && opts.Argument != "" {
if err := os.Setenv("_LIBPOD_ROOTLESS_ARG", opts.Argument); err != nil {
if err := os.Setenv("_CONTAINERS_ROOTLESS_ARG", opts.Argument); err != nil {
return false, -1, err
}
}
@ -187,7 +187,7 @@ func JoinDirectUserAndMountNSWithOpts(pid uint, opts *Opts) (bool, int, error) {
// JoinNSPath re-exec podman in a new userNS and join the owner user namespace of the
// specified path.
func JoinNSPath(path string) (bool, int, error) {
if os.Geteuid() == 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != "" {
if os.Geteuid() == 0 || os.Getenv("_CONTAINERS_USERNS_CONFIGURED") != "" {
return false, -1, nil
}
@ -223,8 +223,8 @@ func BecomeRootInUserNS() (bool, int, error) {
// If podman was re-executed the caller needs to propagate the error code returned by the child
// process.
func BecomeRootInUserNSWithOpts(opts *Opts) (bool, int, error) {
if os.Geteuid() == 0 || os.Getenv("_LIBPOD_USERNS_CONFIGURED") != "" {
if os.Getenv("_LIBPOD_USERNS_CONFIGURED") == "init" {
if os.Geteuid() == 0 || os.Getenv("_CONTAINERS_USERNS_CONFIGURED") != "" {
if os.Getenv("_CONTAINERS_USERNS_CONFIGURED") == "init" {
return false, 0, runInUser()
}
return false, 0, nil
@ -242,7 +242,7 @@ func BecomeRootInUserNSWithOpts(opts *Opts) (bool, int, error) {
defer w.Write([]byte("0"))
if opts != nil && opts.Argument != "" {
if err := os.Setenv("_LIBPOD_ROOTLESS_ARG", opts.Argument); err != nil {
if err := os.Setenv("_CONTAINERS_ROOTLESS_ARG", opts.Argument); err != nil {
return false, -1, err
}
}