Fix help message, man page.
Bug: None
Test: man minijail0.1
Test: ./minijail0 -h
Change-Id: I01a93540c6b64524eaf9f830e056c3855c9fc8a3
diff --git a/minijail0.1 b/minijail0.1
index 2a7beca..cdc3083 100644
--- a/minijail0.1
+++ b/minijail0.1
@@ -71,13 +71,15 @@
force certain syscalls to be allowed in order to achieve this, depending on the
system.
.TP
-\fB-m "<uid> <loweruid> <count>[,<uid> <loweruid> <count>]"\fR
+\fB-m[<uid> <loweruid> <count>[,<uid> <loweruid> <count>]]\fR
Set the uid mapping of a user namespace (implies \fB-pU\fR). Same arguments as
-\fBnewuidmap(1)\fR. Multiple mappings should be separated by ','.
+\fBnewuidmap(1)\fR. Multiple mappings should be separated by ','. With no mapping,
+map the current uid to root inside the user namespace.
.TP
-\fB-M "<uid> <loweruid> <count>[,<uid> <loweruid> <count>]"\fR
+\fB-M[<uid> <loweruid> <count>[,<uid> <loweruid> <count>]]\fR
Set the gid mapping of a user namespace (implies \fB-pU\fR). Same arguments as
-\fBnewgidmap(1)\fR. Multiple mappings should be separated by ','.
+\fBnewgidmap(1)\fR. Multiple mappings should be separated by ','. With no mapping,
+map the current gid to root inside the user namespace.
.TP
\fB-n\fR
Set the process's \fIno_new_privs\fR bit. See \fBprctl(2)\fR and the kernel
@@ -112,7 +114,7 @@
system calls defined in the policy file. Note that system calls often change
names based on the architecture or mode. (uname -m is your friend.)
.TP
-\fB-t [size]\fR
+\fB-t[size]\fR
Mounts a tmpfs filesystem on /tmp. /tmp must exist already (e.g. in the chroot).
The filesystem has a default size of "64M", overridden with an optional
argument. It has standard /tmp permissions (1777), and is mounted