Import sources from 2011-03-30 iso image

1 files changed, 75 insertions, 0 deletions

diff --git a/sys/src/boot/alphapc/conf.c b/sys/src/boot/alphapc/conf.c
new file mode 100755
index 000000000..8a4858d92
--- /dev/null
+++ b/sys/src/boot/alphapc/conf.c
@@ -0,0 +1,75 @@
+#include	"u.h"
+#include	"mem.h"
+#include	"dat.h"
+#include	"fns.h"
+#include	"lib.h"
+
+static char *confname[MAXCONF];
+static char *confval[MAXCONF];
+static int nconf;
+static char bootargs[BOOTARGSLEN];
+
+char*
+getconf(char *name)
+{
+	int i;
+
+	for(i = 0; i < nconf; i++)
+		if(strcmp(confname[i], name) == 0)
+			return confval[i];
+	return 0;
+}
+
+void
+setconf(char *buf)
+{
+	char *cp, *line[MAXCONF];
+	int i, n;
+
+	/*
+	 * Keep a pristine copy.
+	 * Should change this to pass the parsed strings
+	 * to the booted programme instead of the raw
+	 * string, then it only gets done once.
+	 */
+	strcpy(bootargs, buf);
+	/* print("boot: stashing /alpha/conf boot args at 0x%lux\n",
+		bootargs);			/* DEBUG */
+	conf.bootargs = bootargs;
+
+	n = getcfields(buf, line, MAXCONF, "\n");
+	for(i = 0; i < n; i++){
+		if(*line[i] == '#')
+			continue;
+		cp = strchr(line[i], '=');
+		if(cp == nil)
+			continue;
+		*cp++ = 0;
+		if(cp - line[i] >= NAMELEN+1)
+			*(line[i]+NAMELEN-1) = 0;
+		confname[nconf] = line[i];
+		confval[nconf] = cp;
+		nconf++;
+	}
+}
+
+int
+getcfields(char* lp, char** fields, int n, char* sep)
+{
+	int i;
+
+	for(i = 0; lp && *lp && i < n; i++){
+		while(*lp && strchr(sep, *lp) != 0)
+			*lp++ = 0;
+		if(*lp == 0)
+			break;
+		fields[i] = lp;
+		while(*lp && strchr(sep, *lp) == 0){
+			if(*lp == '\\' && *(lp+1) == '\n')
+				*lp++ = ' ';
+			lp++;
+		}
+	}
+
+	return i;
+}