add directory bin

2024-02-19 00:21:52 -05:00
parent 1b1e027f34
commit 42f484790f
611 changed files with 242668 additions and 0 deletions
--- a/bin/fdisk.c
+++ b/bin/fdisk.c
@@ -0,0 +1,110 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include <linux/hdreg.h>
+
+#define DISK_STRING "/dev/hd"
+
+static int current_minor;
+static int indent;
+
+char * disk_type(unsigned char type)
+{
+	switch (type) {
+		case 1: return "12-bit DOS";
+		case 4:	return "16-bit DOS (<32M)";
+		case 5: return "extended partition (don't use)";
+		case 6: return "16-bit DOS (>=32M)";
+		case 0x81: return "minix";
+	}
+	return NULL;
+}
+
+char * dev_name(int minor)
+{
+	char * ctl;
+	static char name[100];
+
+	if (minor & 0x3f)
+		ctl = "%s%c%d";
+	else
+		ctl = "%s%c";
+	sprintf(name,ctl,DISK_STRING,'a'+(minor >> 6),minor & 0x3f);
+	return name;
+}
+
+void fdisk(int minor)
+{
+	char * type, * name;
+	char buffer[1024];
+	struct partition * p;
+	int fd;
+	int i;
+	int this_minor = current_minor;
+
+	if ((fd=open(name = dev_name(minor),O_RDONLY)) < 0) {
+		fprintf(stderr,"Unable to open %s\n",name);
+		exit(1);
+	}
+	if (1024 != read(fd,buffer,1024))
+		return;
+	if (!(minor & 0x3f)) {
+		printf("Disk %d:\n", minor >> 6);
+		indent = 4;
+	}
+	p = (struct partition *) (buffer + 0x1be);
+	for (i=0 ; i<4 ; p++,i++) {
+		if (!p->nr_sects)
+			continue;
+		printf("%*c",indent,' ');
+		printf("%s: %6d blocks",dev_name(this_minor+i),p->nr_sects>>1);
+		if (p->boot_ind == 0x80)
+			printf(" active");
+		else if (p->boot_ind)
+			printf(" active? (%02x)",p->boot_ind);
+		if (type = disk_type(p->sys_ind))
+			printf(" %s\n",type);
+		else
+			printf(" unknown partition type 0x%02X\n",p->sys_ind);
+		if (p->sys_ind == 5 && (0x3f & current_minor) < 60) {
+			indent += 4;
+			current_minor += 4;
+			fdisk(this_minor+i);
+			indent -= 4;
+		}
+	}
+/* check for disk-manager partitions */
+	if (*(unsigned short *) (buffer + 0xfc) != 0x55AA)
+		return;
+	p = (struct partition *) (buffer + 0x1be);
+	for (i=4; i<16; i++) {
+		p--;
+		if ((current_minor & 0x3f) >= 60)
+			break;
+		if (!p->nr_sects)
+			continue;
+		printf("%*c",indent,' ');
+		printf("%s: %6d blocks disk-manager",dev_name(current_minor),p->nr_sects>>1);
+		if (p->boot_ind == 0x80)
+			printf(" active");
+		else if (p->boot_ind)
+			printf(" active? (%02x)",p->boot_ind);
+		if (type = disk_type(p->sys_ind))
+			printf(" %s\n",type);
+		else
+			printf(" unknown partition type 0x%02X\n",p->sys_ind);
+		current_minor++;
+	}
+}
+		
+
+int main(int argc, char ** argv)
+{
+	current_minor = 1;
+	fdisk(0);
+	current_minor = 65;
+	fdisk(64);
+	return 0;
+}