Dcookie entry, required by Chopstix.

diff --git a/factory/Makefile b/factory/Makefile
new file mode 100644 (file)
index 0000000..22ff5b5
--- /dev/null
+++ b/factory/Makefile
@@ -0,0 +1,4 @@
+CC=gcc
+CFLAGS=-g -O2
+
+all: dcookie

diff --git a/factory/dcookie.c b/factory/dcookie.c
new file mode 100644 (file)
index 0000000..f5d01cd
--- /dev/null
+++ b/factory/dcookie.c
@@ -0,0 +1,36 @@
+/* dcookie retrieval vsys entry, required by Chopstix.
+ * The lookup_dcookie system call retrieves a pathname */
+
+#define __NR_LOOKUP_DCOOKIE 253
+
+#include <sys/syscall.h>
+#include <asm/page.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#define INT64_MAXSZ    "18446744073709551615Z"
+
+int lookup_dcookie(uint64_t cookie, char * buf, size_t size)
+{
+               return syscall(__NR_LOOKUP_DCOOKIE, cookie, buf, size);
+}
+
+int main(int argc,char *argv[]) {
+               /* fs/dcookie.c uses PAGE_SIZE */
+               char path_buf[PAGE_SIZE],dcookie_buf[sizeof(INT64_MAXSZ)];
+
+               /* In case nothing happens */
+               path_buf[0]='\0';
+
+               while (fgets(dcookie_buf, sizeof(dcookie_buf),stdin)) {
+                       if (lookup_dcookie(atoll(dcookie_buf), path_buf, sizeof(path_buf))>0) { 
+                                       printf("%s\n",path_buf);
+                       }
+                       else {
+                                       printf("% Not found\n");
+                       }
+               }
+}