New test, to check that device nodes are created and then visible correctly.

diff --git a/lustre/tests/cmknod.c b/lustre/tests/cmknod.c
new file mode 100644 (file)
index 0000000..fa42e2b
--- /dev/null
+++ b/lustre/tests/cmknod.c
@@ -0,0 +1,94 @@
+/* Simple test to check that device nodes are correctly created and visible */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#define TEST_MINOR 120
+#define TEST_MAJOR 25
+
+void usage(char *prog)
+{
+       fprintf(stderr, "usage: %s <filename>\n", prog);
+       exit(1);
+}
+
+int main( int argc, char **argv)
+{
+       char *prog = argv[0];
+       char *filename = argv[1];
+       int rc;
+       struct stat st;
+       dev_t device = makedev(TEST_MAJOR, TEST_MINOR);
+
+       if (argc != 2) 
+               usage(prog);
+
+       unlink(filename);
+       /* First try block devices */
+       rc = mknod(filename, 0700 | S_IFBLK, device);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: mknod(%s) failed: rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 2;
+       }
+
+       rc = stat(filename, &st);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: stat(%s) failed: rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 3;
+       }
+       if ( st.st_rdev != device) {
+               fprintf(stderr, "%s: created device other than requested: (%d,%d) instead of (%d,%d)\n", prog, major(st.st_rdev),minor(st.st_rdev),major(device),minor(device));
+               return 4;
+       }
+       if ( ! (st.st_mode | S_IFBLK) ) {
+               fprintf(stderr, "%s: created device of different type. Requested block device, got mode %o\n", prog, st.st_mode);
+               return 5;
+       }
+
+       rc = unlink(filename);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: Cannot unlink created device %s, rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 6;
+       }
+
+       /* Second try char devices */
+       rc = mknod(filename, 0700 | S_IFCHR, device);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: mknod(%s) failed: rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 7;
+       }
+
+       rc = stat(filename, &st);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: stat(%s) failed: rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 8;
+       }
+       if ( st.st_rdev != device) {
+               fprintf(stderr, "%s: created device other than requested: (%d,%d) instead of (%d,%d)\n", prog, major(st.st_rdev),minor(st.st_rdev),major(device),minor(device));
+               return 9;
+       }
+       if ( ! (st.st_mode | S_IFCHR) ) {
+               fprintf(stderr, "%s: created device of different type. Requested char device, got mode %o\n", prog, st.st_mode);
+               return 10;
+       }
+
+       rc = unlink(filename);
+       if ( rc < 0 ) {
+               fprintf(stderr, "%s: Cannot unlink created device %s, rc %d: %s\n",
+                       prog, filename, errno, strerror(errno));
+               return 11;
+       }
+
+       printf("%s: device nodes created correctly\n", prog);
+
+       return 0;
+}