shithub: riscv

Info  •  Files  •  Log  •  Branches

extended ramfs (-abc)

--- a/sys/src/cmd/ramfs.c

+++ b/sys/src/cmd/ramfs.c

@@ -157,9 +157,11 @@

 	int p[2];

 	int fd;

 	int stdio = 0;

+	int mountflags;

 	service = "ramfs";

 	defmnt = "/tmp";

+	mountflags = 0;

 	ARGBEGIN{

 	case 'i':

 		defmnt = 0;

@@ -186,9 +188,20 @@

 		defmnt = 0;

 		service = EARGF(usage());

 		break;

+	case 'b':

+		mountflags |= MBEFORE;

+		break;

+	case 'c':

+		mountflags |= MCREATE;

+		break;

+	case 'a':

+		mountflags |= MAFTER;

+		break;

 	default:

 		usage();

 	}ARGEND

+	if(mountflags == 0)

+		mountflags = MREPL | MCREATE;

 	if(pipe(p) < 0)

 		error("pipe failed");

@@ -239,7 +252,7 @@

 		break;

 	default:

 		close(p[0]);	/* don't deadlock if child fails */

-		if(defmnt && mount(p[1], -1, defmnt, MREPL|MCREATE, "") < 0)

+		if(defmnt && mount(p[1], -1, defmnt, mountflags, "") < 0)

 			error("mount failed");

 	}

 	exits(0);

@@ -902,6 +915,6 @@

 void

 usage(void)

 {

-	fprint(2, "usage: %s [-Dipsu] [-m mountpoint] [-S srvname]\n", argv0);

+	fprint(2, "usage: %s [-Dipsubac] [-m mountpoint] [-S srvname]\n", argv0);

 	exits("usage");

 }