Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,62 @@
+#define	NMOUNT	16
+#define	NAMSIZ	32
+
+struct mtab {
+	char	file[NAMSIZ];
+	char	spec[NAMSIZ];
+} mtab[NMOUNT];
+
+main(argc, argv)
+char **argv;
+{
+	register int ro;
+	register struct mtab *mp;
+	register char *np;
+	int n, mf;
+
+	mf = open("/etc/mtab", 0);
+	read(mf, mtab, NMOUNT*2*NAMSIZ);
+	if (argc==1) {
+		for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
+			if (mp->file[0])
+				printf("%s on %s\n", mp->spec, mp->file);
+		return;
+	}
+	if(argc < 3) {
+		printf("arg count\n");
+		return;
+	}
+	ro = 0;
+	if(argc > 3)
+		ro++;
+	if(mount(argv[1], argv[2], ro) < 0) {
+		perror("mount");
+		return;
+	}
+	np = argv[1];
+	while(*np++)
+		;
+	np--;
+	while(*--np == '/')
+		*np = '\0';
+	while(np > argv[1] && *--np != '/')
+		;
+	if(*np == '/')
+		np++;
+	argv[1] = np;
+	for (mp = mtab; mp < &mtab[NMOUNT]; mp++) {
+		if (mp->file[0] == 0) {
+			for (np = mp->spec; np < &mp->spec[NAMSIZ-1];)
+				if ((*np++ = *argv[1]++) == 0)
+					argv[1]--;
+			for (np = mp->file; np < &mp->file[NAMSIZ-1];)
+				if ((*np++ = *argv[2]++) == 0)
+					argv[2]--;
+			mp = &mtab[NMOUNT];
+			while ((--mp)->file[0] == 0);
+			mf = creat("/etc/mtab", 0644);
+			write(mf, mtab, (mp-mtab+1)*2*NAMSIZ);
+			return;
+		}
+	}
+}