Branch HEAD

[fs/lustre-release.git] / lustre / tests / openunlink.c

diff --git a/lustre/tests/openunlink.c b/lustre/tests/openunlink.c
index e7671c8..4a0d8c3 100644 (file)
--- a/lustre/tests/openunlink.c
+++ b/lustre/tests/openunlink.c
@@ -1,18 +1,23 @@
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ */
 #include <stdio.h>
 #include <fcntl.h>
 #include <string.h>
 #include <errno.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <stdlib.h>
 #include <unistd.h>
 
-#define T1 "write before unlink\n"
-#define T2 "write after unlink\n"
+#define T1 "write data before unlink\n"
+#define T2 "write data after unlink\n"
 char buf[128];
 
 int main(int argc, char **argv)
 {
-       char *fname, *fname2;
+        char *fname, *fname2;
+        struct stat st;
         int fd, rc;
 
         if (argc < 2 || argc > 3) {
@@ -20,11 +25,11 @@ int main(int argc, char **argv)
                 exit(1);
         }
 
-       fname = argv[1];
-       if (argc == 3)
-               fname2 = argv[2];
-       else
-               fname2 = argv[1];
+        fname = argv[1];
+        if (argc == 3)
+                fname2 = argv[2];
+        else
+                fname2 = argv[1];
 
         fprintf(stderr, "opening\n");
         fd = open(fname, O_RDWR | O_TRUNC | O_CREAT, 0644);
@@ -36,50 +41,53 @@ int main(int argc, char **argv)
         fprintf(stderr, "writing\n");
         rc = write(fd, T1, strlen(T1) + 1);
         if (rc != strlen(T1) + 1) {
-                fprintf(stderr, "write (normal) %s\n", strerror(errno));
-                exit(1);
-        }
-
-       if (argc == 3) {
-               fprintf(stderr, "closing %s\n", fname);
-               rc = close(fd);
-               if (rc) {
-                       fprintf(stderr, "close (normal) %s\n", strerror(errno));
-                       exit(1);
-               }
-
-               fprintf(stderr, "opening %s\n", fname2);
-               fd = open(fname2, O_RDWR);
-               if (fd == -1) {
-                       fprintf(stderr, "open (unlink) %s\n", strerror(errno));
-                       exit(1);
-               }
-
-               fprintf (stderr, "unlinking %s\n", fname2);
-               rc = unlink(fname2);
-               if (rc) {
-                       fprintf(stderr, "unlink %s\n", strerror(errno));
-                       exit(1);
-               }
-
-               if (access(fname2, F_OK) == 0) {
-                       fprintf(stderr, "%s still exists\n", fname2);
-                       exit(1);
-               }
-       } else {
-               printf("unlink %s and press enter\n", fname);
-               getc(stdin);
-       }
-
-       if (access(fname, F_OK) == 0) {
-               fprintf(stderr, "%s still exists\n", fname);
-               exit(1);
-       }
+                fprintf(stderr, "write (normal) %s (rc %d)\n",
+                        strerror(errno), rc);
+                exit(1);
+        }
+
+        if (argc == 3) {
+                fprintf (stderr, "unlinking %s\n", fname2);
+                rc = unlink(fname2);
+                if (rc) {
+                        fprintf(stderr, "unlink %s\n", strerror(errno));
+                        exit(1);
+                }
+        } else {
+                printf("unlink %s and press enter\n", fname);
+                getc(stdin);
+        }
+
+        if (access(fname, F_OK) == 0) {
+                fprintf(stderr, "%s still exists\n", fname2);
+                exit(1);
+        }
+
+        fprintf(stderr, "resetting fd offset\n");
+        rc = lseek(fd, 0, SEEK_SET);
+        if (rc) {
+                fprintf(stderr, "seek %s\n", strerror(errno));
+                exit(1);
+        }
+
+        if (access(fname, F_OK) == 0) {
+                fprintf(stderr, "%s still exists\n", fname);
+                exit(1);
+        }
+
+        fprintf(stderr, "fstat...\n");
+        rc = fstat(fd, &st);
+        if (rc) {
+                fprintf(stderr, "fstat (unlink) %s\n", strerror(errno));
+                exit(1);
+        }
+        if (st.st_nlink != 0)
+                fprintf(stderr, "st_nlink = %d\n", (int)st.st_nlink);
 
         fprintf(stderr, "reading\n");
         rc = read(fd, buf, strlen(T1) + 1);
         if (rc != strlen(T1) + 1) {
-                fprintf(stderr, "read (unlink) %s rc %d\n",
+                fprintf(stderr, "read (unlink) %s (rc %d)\n",
                         strerror(errno), rc);
                 exit(1);
         }
@@ -92,7 +100,7 @@ int main(int argc, char **argv)
 
         fprintf(stderr, "truncating\n");
         rc = ftruncate(fd, 0);
-        if (rc ) {
+        if (rc) {
                 fprintf(stderr, "truncate (unlink) %s\n", strerror(errno));
                 exit(1);
         }
@@ -124,8 +132,8 @@ int main(int argc, char **argv)
         fprintf(stderr, "reading again\n");
         rc = read(fd, buf, strlen(T2) + 1);
         if (rc != strlen(T2) + 1) {
-                fprintf(stderr, "read (after unlink rewrite) %s\n",
-                        strerror(errno));
+                fprintf(stderr, "read (after unlink rewrite) %s (rc %d)\n",
+                        strerror(errno), rc);
                 exit(1);
         }
 
@@ -135,7 +143,7 @@ int main(int argc, char **argv)
                 exit(1);
         }
 
-        fprintf(stderr, "closing again\n");
+        fprintf(stderr, "closing\n");
         rc = close(fd);
         if (rc) {
                 fprintf(stderr, "close (unlink) %s\n", strerror(errno));