Import sources from 2011-03-30 iso image

1 files changed, 94 insertions, 0 deletions

diff --git a/sys/src/cmd/srvfs.c b/sys/src/cmd/srvfs.c
new file mode 100755
index 000000000..d5c028150
--- /dev/null
+++ b/sys/src/cmd/srvfs.c
@@ -0,0 +1,94 @@
+#include <u.h>
+#include <libc.h>
+
+static void
+usage(void)
+{
+	fprint(2, "usage: %s [-dR] [-p perm] [-P patternfile] [-e exportfs] srvname path\n", argv0);
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	char *ename, *arglist[16], **argp;
+	int n, fd, pipefd[2];
+	char buf[64];
+	int perm = 0600;
+
+	argp = arglist;
+	ename = "/bin/exportfs";
+	*argp++ = "exportfs";
+	ARGBEGIN{
+	default:
+		usage();
+	case 'd':
+		*argp++ = "-d";
+		break;
+	case 'e':
+		ename = EARGF(usage());
+		break;
+	case 'p':
+		perm = strtol(EARGF(usage()), 0, 8);
+		break;
+	case 'P':
+		*argp++ = "-P";
+		*argp++ = EARGF(usage());
+		break;
+	case 'R':
+		*argp++ = "-R";
+		 break;
+	}ARGEND
+	*argp = 0;
+	if(argc != 2)
+		usage();
+
+	if(pipe(pipefd) < 0){
+		fprint(2, "can't pipe: %r\n");
+		exits("pipe");
+	}
+
+	switch(rfork(RFPROC|RFNOWAIT|RFNOTEG|RFFDG)){
+	case -1:
+		fprint(2, "can't rfork: %r\n");
+		exits("rfork");
+	case 0:
+		dup(pipefd[0], 0);
+		dup(pipefd[0], 1);
+		close(pipefd[0]);
+		close(pipefd[1]);
+		exec(ename, arglist);
+		fprint(2, "can't exec exportfs: %r\n");
+		exits("exec");
+	default:
+		break;
+	}
+	close(pipefd[0]);
+	if(fprint(pipefd[1], "%s", argv[1]) < 0){
+		fprint(2, "can't write pipe: %r\n");
+		exits("write");
+	}
+	n = read(pipefd[1], buf, sizeof buf-1);
+	if(n < 0){
+		fprint(2, "can't read pipe: %r\n");
+		exits("read");
+	}
+	buf[n] = 0;
+	if(n != 2 || strcmp(buf, "OK") != 0){
+		fprint(2, "not OK (%d): %s\n", n, buf);
+		exits("OK");
+	}
+	if(argv[0][0] == '/')
+		strecpy(buf, buf+sizeof buf, argv[0]);
+	else
+		snprint(buf, sizeof buf, "/srv/%s", argv[0]);
+	fd = create(buf, OWRITE, perm);
+	if(fd < 0){
+		fprint(2, "can't create %s: %r\n", buf);
+		exits("create");
+	}
+	fprint(fd, "%d", pipefd[1]);
+	close(fd);
+	close(pipefd[1]);
+	exits(0);
+}