1 files changed, 64 insertions, 0 deletions

diff --git a/block_device.c b/block_device.c
new file mode 100644
index 000000000..87e7209c0
--- /dev/null
+++ b/block_device.c
@@ -0,0 +1,64 @@
+#include "internal.h"
+#include <dirent.h>
+#include <string.h>
+#include <stdio.h>
+
+const char      block_device_usage[] = "block_device mount-point";
+
+static dev_t *my_device;
+static char *my_device_name;
+
+int 
+match_mount(const struct FileInfo * i) {
+        if ( S_ISBLK(i->stat.st_mode) 
+         && (i->stat.st_rdev == *my_device)) {
+                my_device_name=strdup(i->source);
+                return 1;
+        } else
+                return 0;
+}
+
+extern int
+block_device_main(struct FileInfo * i, int argc, char * * argv)
+{
+        char *device_name = block_device(argv[1],i);
+        if ( device_name == NULL )
+                return -1;
+        printf("%s\n", device_name);
+        exit(0);
+}
+
+char * block_device(const char *name, struct FileInfo *i)
+{
+        struct stat     s;
+        char *buf;
+        int dinam=0;
+
+        if ( stat(name, &s) ) return (char *) NULL;
+        if (!i) {
+          i=(struct FileInfo*)malloc(sizeof(struct FileInfo));
+          dinam = 1;
+        }
+        memset((void *)i, 0, sizeof(struct FileInfo));
+        my_device=(dev_t *)malloc(sizeof(dev_t));
+        *my_device = s.st_dev;
+        my_device_name = NULL;
+        i->source = "/dev";
+        i->stat = s;
+        i->processDirectoriesAfterTheirContents=1;
+        descend(i, match_mount);
+        if (dinam) free(i);
+        if ( my_device_name ) {
+                buf = strdup(my_device_name);
+                free(my_device);
+                free(my_device_name);
+                return buf;
+        } else {
+                fprintf( stderr
+                ,"Can't find special file for block device %d, %d.\n"
+                ,(int) *my_device >> 8 & 0xff
+                ,(int) *my_device & 0xff);
+                free(my_device);
+                return (char *) NULL;
+        }
+}