Add devsize

diff --git a/commands/simple/Makefile b/commands/simple/Makefile
index e4884d0e9959e664dc8c9ac94cfee507fa8dd554..6ce210b70232757a15af5f9d00789e9eb59d87cf 100755 (executable)
--- a/commands/simple/Makefile
+++ b/commands/simple/Makefile
@@ -68,6 +68,7 @@ ALL   = \
        dd \
        decomp16 \
        dev2name \
+       devsize \
        df \
        dhrystone \
        diff \
@@ -321,6 +322,10 @@ dev2name:  dev2name.c
        $(CCLD) -o $@ $?
        @install -S 4kw $@
 
+devsize:       devsize.c
+       $(CCLD) -o $@ $?
+       @install -S 4kw $@
+
 df:    df.c
        $(CCLD) -I$(SYS) -o $@ $?
        @install -S 4kw $@
@@ -897,6 +902,7 @@ install:    \
        /usr/bin/dd \
        /usr/bin/decomp16 \
        /bin/dev2name \
+       /usr/bin/devsize \
        /usr/bin/df \
        /usr/bin/dhrystone \
        /usr/bin/diff \
@@ -1161,6 +1167,9 @@ install:  \
 /bin/dev2name: dev2name
        install -cs -o bin $? $@
 
+/usr/bin/devsize:      devsize
+       install -cs -o bin $? $@
+
 /usr/bin/decomp16:     decomp16
        install -cs -o bin $? $@
 

diff --git a/commands/simple/devsize.c b/commands/simple/devsize.c
new file mode 100755 (executable)
index 0000000..3ee48c2
--- /dev/null
+++ b/commands/simple/devsize.c
@@ -0,0 +1,57 @@
+/* Ben Gras
+ *
+ * Based on sizeup() in mkfs.c.
+ */
+
+#include <sys/types.h>
+#include <sys/dir.h>
+#include <sys/stat.h>
+#include <ibm/partition.h>
+#include <minix/partition.h>
+#include <minix/u64.h>
+#include <sys/ioc_disk.h>
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+unsigned long sizeup(char *);
+
+int main(int argc, char *argv[])
+{
+  int sec;
+
+  if(argc != 2) {
+       fprintf(stderr, "Usage: %s <device>\n", argv[0]);
+       return 1;
+  }
+
+  printf("%lu\n", sizeup(argv[optind]));
+  return 0;
+}      
+
+
+unsigned long sizeup(device)
+char *device;
+{
+  int fd;
+  struct partition entry;
+  unsigned long d;
+  struct stat st;
+
+  if ((fd = open(device, O_RDONLY)) == -1) {
+       perror("sizeup open");
+       exit(1);
+  }
+  if (ioctl(fd, DIOCGETP, &entry) == -1) {
+       perror("sizeup ioctl");
+       exit(1);
+  }
+  close(fd);
+  d = div64u(entry.size, 512);
+  return d;
+}