Import sources from 2011-03-30 iso image

1 files changed, 182 insertions, 0 deletions

diff --git a/sys/src/9/boot/aux.c b/sys/src/9/boot/aux.c
new file mode 100755
index 000000000..b5dec7764
--- /dev/null
+++ b/sys/src/9/boot/aux.c
@@ -0,0 +1,182 @@
+#include <u.h>
+#include <libc.h>
+#include <../boot/boot.h>
+
+/*
+int
+plumb(char *dir, char *dest, int *efd, char *here)
+{
+	char buf[128];
+	char name[128];
+	int n;
+
+	sprint(name, "%s/clone", dir);
+	efd[0] = open(name, ORDWR);
+	if(efd[0] < 0)
+		return -1;
+	n = read(efd[0], buf, sizeof(buf)-1);
+	if(n < 0){
+		close(efd[0]);
+		return -1;
+	}
+	buf[n] = 0;
+	sprint(name, "%s/%s/data", dir, buf);
+	if(here){
+		sprint(buf, "announce %s", here);
+		if(sendmsg(efd[0], buf) < 0){
+			close(efd[0]);
+			return -1;
+		}
+	}
+	sprint(buf, "connect %s", dest);
+	if(sendmsg(efd[0], buf) < 0){
+		close(efd[0]);
+		return -1;
+	}
+	efd[1] = open(name, ORDWR);
+	if(efd[1] < 0){
+		close(efd[0]);
+		return -1;
+	}
+	return efd[1];
+}
+ */
+
+int
+sendmsg(int fd, char *msg)
+{
+	int n;
+
+	n = strlen(msg);
+	if(write(fd, msg, n) != n)
+		return -1;
+	return 0;
+}
+
+void
+warning(char *s)
+{
+	char buf[ERRMAX];
+
+	buf[0] = '\0';
+	errstr(buf, sizeof buf);
+	fprint(2, "boot: %s: %s\n", s, buf);
+}
+
+void
+fatal(char *s)
+{
+	char buf[ERRMAX];
+
+	buf[0] = '\0';
+	errstr(buf, sizeof buf);
+	fprint(2, "boot: %s: %s\n", s, buf);
+	exits(0);
+}
+
+int
+readfile(char *name, char *buf, int len)
+{
+	int f, n;
+
+	buf[0] = 0;
+	f = open(name, OREAD);
+	if(f < 0)
+		return -1;
+	n = read(f, buf, len-1);
+	if(n >= 0)
+		buf[n] = 0;
+	close(f);
+	return 0;
+}
+
+int
+writefile(char *name, char *buf, int len)
+{
+	int f, n;
+
+	f = open(name, OWRITE);
+	if(f < 0)
+		return -1;
+	n = write(f, buf, len);
+	close(f);
+	return (n != len) ? -1 : 0;
+}
+
+void
+setenv(char *name, char *val)
+{
+	int f;
+	char ename[64];
+
+	snprint(ename, sizeof ename, "#e/%s", name);
+	f = create(ename, 1, 0666);
+	if(f < 0){
+		fprint(2, "create %s: %r\n", ename);
+		return;
+	}
+	write(f, val, strlen(val));
+	close(f);
+}
+
+void
+srvcreate(char *name, int fd)
+{
+	char *srvname;
+	int f;
+	char buf[64];
+
+	srvname = strrchr(name, '/');
+	if(srvname)
+		srvname++;
+	else
+		srvname = name;
+
+	snprint(buf, sizeof buf, "#s/%s", srvname);
+	f = create(buf, 1, 0666);
+	if(f < 0)
+		fatal(buf);
+	sprint(buf, "%d", fd);
+	if(write(f, buf, strlen(buf)) != strlen(buf))
+		fatal("write");
+	close(f);
+}
+
+void
+catchint(void *a, char *note)
+{
+	USED(a);
+	if(strcmp(note, "alarm") == 0)
+		noted(NCONT);
+	noted(NDFLT);
+}
+
+int
+outin(char *prompt, char *def, int len)
+{
+	int n;
+	char buf[256];
+
+	if(len >= sizeof buf)
+		len = sizeof(buf)-1;
+
+	if(cpuflag){
+		notify(catchint);
+		alarm(15*1000);
+	}
+	print("%s[%s]: ", prompt, *def ? def : "no default");
+	memset(buf, 0, sizeof buf);
+	n = read(0, buf, len);
+	if(cpuflag){
+		alarm(0);
+		notify(0);
+	}
+
+	if(n < 0)
+		return 1;
+	if(n > 1){
+		buf[n-1] = 0;
+		strcpy(def, buf);
+	}
+	return n;
+}