diff options
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/settrans.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/utils/settrans.c b/utils/settrans.c index e01906b4..ee7cba53 100644 --- a/utils/settrans.c +++ b/utils/settrans.c @@ -47,6 +47,7 @@ const char *argp_program_version = STANDARD_HURD_VERSION (settrans); #define STRINGIFY(arg) _STRINGIFY (arg) #define OPT_CHROOT_CHDIR -1 +#define OPT_STACK -2 static struct argp_option options[] = { @@ -66,6 +67,8 @@ static struct argp_option options[] = "(do not ask it to go away)"}, {"underlying", 'U', "NODE", 0, "Open NODE and hand it to the translator " "as the underlying node"}, + {"stack", OPT_STACK, 0, 0, "Replace an existing translator, but keep it " + "running, and put the new one on top"}, {"chroot", 'C', 0, 0, "Instead of setting the node's translator, take following arguments up to" @@ -156,10 +159,12 @@ main(int argc, char *argv[]) int passive = 0, active = 0, keep_active = 0, pause = 0, kill_active = 0, orphan = 0; int start = 0; + int stack = 0; char *pid_file = NULL; int excl = 0; int timeout = DEFAULT_TIMEOUT * 1000; /* ms */ char *underlying_node_name = NULL; + int underlying_lookup_flags; char **chroot_command = 0; char *chroot_chdir = "/"; @@ -193,6 +198,11 @@ main(int argc, char *argv[]) start = 1; active = 1; /* start implies active */ break; + case OPT_STACK: + stack = 1; + active = 1; /* stack implies active */ + orphan = 1; /* stack implies orphan */ + break; case 'p': passive = 1; break; case 'k': keep_active = 1; break; case 'g': kill_active = 1; break; @@ -261,6 +271,14 @@ main(int argc, char *argv[]) argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, 0); + if (stack) + { + underlying_node_name = node_name; + underlying_lookup_flags = lookup_flags && ~O_NOTRANS; + } + else + underlying_lookup_flags = lookup_flags; + if (!active && !passive && !chroot_command) passive = 1; /* By default, set the passive translator. */ @@ -341,7 +359,8 @@ main(int argc, char *argv[]) if (underlying_node_name) { *underlying = file_name_lookup (underlying_node_name, - flags | lookup_flags, 0666); + flags | underlying_lookup_flags, + 0666); if (! MACH_PORT_VALID (*underlying)) { /* For the error message. */ |