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Modify --user flag for podman create and run

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If an integer is passed into the --user flag, i.e --user=1234
don't look up the user in /etc/passwd, just assign the integer as the uid.

Signed-off-by: umohnani8 <umohnani@redhat.com>

Closes: #652
Approved by: mheon
This commit is contained in:
umohnani8
2018-04-20 09:44:37 -04:00
committed by Atomic Bot
parent e76caee338
commit cf41dc70b3
4 changed files with 46 additions and 7 deletions
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19
pkg/chrootuser/user.go
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@ -37,8 +37,8 @@ func GetUser(rootdir, userspec string) (uint32, uint32, error) {
userspec = name
} else {
// Leave userspec alone, but swallow the error and just
// use GID 0.
gid64 = 0
// use GID == UID.
gid64 = uid64
gerr = nil
}
}
@ -70,6 +70,21 @@ func GetUser(rootdir, userspec string) (uint32, uint32, error) {
return 0, 0, err
}
// GetGroup returns the gid by looking it up in the /etc/passwd file
// groupspec format [ group | gid ]
func GetGroup(rootdir, groupspec string) (uint32, error) {
gid64, gerr := strconv.ParseUint(groupspec, 10, 32)
if gerr != nil {
// The group couldn't be parsed as a number, so look up
// the group's GID.
gid64, gerr = lookupGroupInContainer(rootdir, groupspec)
}
if gerr != nil {
return 0, errors.Wrapf(gerr, "error looking up group for gid %q", groupspec)
}
return uint32(gid64), nil
}
// GetAdditionalGroupsForUser returns a list of gids that userid is associated with
func GetAdditionalGroupsForUser(rootdir string, userid uint64) ([]uint32, error) {
return lookupAdditionalGroupsForUIDInContainer(rootdir, userid)