diff options
Diffstat (limited to 'src/nspawn/nspawn.c')
| -rw-r--r-- | src/nspawn/nspawn.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c index e066c55dae..a173d171e1 100644 --- a/src/nspawn/nspawn.c +++ b/src/nspawn/nspawn.c @@ -913,14 +913,21 @@ static int parse_argv(int argc, char *argv[]) { break; - case ARG_PRIVATE_USERS: + case ARG_PRIVATE_USERS: { + int boolean = -1; - if (streq_ptr(optarg, "no")) { + if (!optarg) + boolean = true; + else if (!in_charset(optarg, DIGITS)) + /* do *not* parse numbers as booleans */ + boolean = parse_boolean(optarg); + + if (boolean == false) { /* no: User namespacing off */ arg_userns_mode = USER_NAMESPACE_NO; arg_uid_shift = UID_INVALID; arg_uid_range = UINT32_C(0x10000); - } else if (!optarg || streq(optarg, "yes")) { + } else if (boolean == true) { /* yes: User namespacing on, UID range is read from root dir */ arg_userns_mode = USER_NAMESPACE_FIXED; arg_uid_shift = UID_INVALID; @@ -931,33 +938,40 @@ static int parse_argv(int argc, char *argv[]) { arg_uid_shift = UID_INVALID; arg_uid_range = UINT32_C(0x10000); } else { + _cleanup_free_ char *buffer = NULL; const char *range, *shift; /* anything else: User namespacing on, UID range is explicitly configured */ range = strchr(optarg, ':'); if (range) { - shift = strndupa(optarg, range - optarg); + buffer = strndup(optarg, range - optarg); + if (!buffer) + return log_oom(); + shift = buffer; range++; r = safe_atou32(range, &arg_uid_range); if (r < 0) - return log_error_errno(r, "Failed to parse UID range '%s': %m", range); - if (arg_uid_range == 0) - return log_error_errno(EINVAL, "UID range cannot be 0."); + return log_error_errno(r, "Failed to parse UID range \"%s\": %m", range); } else shift = optarg; - if (parse_uid(shift, &arg_uid_shift) < 0) { - log_error("Failed to parse UID: %s", optarg); - return -EINVAL; - } + r = parse_uid(shift, &arg_uid_shift); + if (r < 0) + return log_error_errno(r, "Failed to parse UID \"%s\": %m", optarg); arg_userns_mode = USER_NAMESPACE_FIXED; } + if (arg_uid_range <= 0) { + log_error("UID range cannot be 0."); + return -EINVAL; + } + arg_settings_mask |= SETTING_USERNS; break; + } case 'U': if (userns_supported()) { |