X-Git-Url: https://git.distorted.org.uk/~mdw/mLib/blobdiff_plain/7ff43cd7273904110681588929bcbad89b28227b..3618811496a6d131fd4bffa19e262c521d39e819:/sys/t/mdup-test.c

diff --git a/sys/t/mdup-test.c b/sys/t/mdup-test.c
index ef9429d..6597b33 100644
--- a/sys/t/mdup-test.c
+++ b/sys/t/mdup-test.c
@@ -6,10 +6,20 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include "macros.h"
 #include "mdup.h"
 
 #define MAXFD 256
 
+/* For some reason, Cygwin has started leaving cruft in the top bits of inode
+ * numbers, which breaks this test.  Mask them off.
+ */
+#if defined(__CYGWIN__) && defined(__amd64__)
+#  define HACK_INODE(ino) ((ino)&0xffffffffffff)
+#else
+#  define HACK_INODE(ino) (ino)
+#endif
+
 static void fail(const char *what) { perror(what); exit(1); }
 
 int main(int argc, char *argv[])
@@ -21,8 +31,10 @@ int main(int argc, char *argv[])
   int flag[MAXFD];
   mdup_fd fds[MAXFD];
   int win = 1;
+  int verbose = 0;
 
   for (i = 1, j = 0; i < argc; i++) {
+    if (STRCMP(argv[i], ==, "-v")) { verbose++; continue; }
     if (j >= MAXFD) { fprintf(stderr, "too many\n"); exit(1); }
     if (sscanf(argv[i], "%d:%d", &fds[j].cur, &fds[j].want) < 2 ||
 	fds[j].cur >= MAXFD)
@@ -33,9 +45,11 @@ int main(int argc, char *argv[])
   for (i = 0; i < MAXFD; i++) flag[i] = -1;
   for (i = 0; i < n; i++) {
     fd = fds[i].cur;
-    if (flag[fd] >= 0)
+    if (flag[fd] >= 0) {
       ino[i] = ino[flag[fd]];
-    else {
+      if (verbose)
+	printf("exist fd %d[%d] = ino %lu\n", fd, i, (unsigned long)ino[i]);
+    } else {
       flag[fd] = i;
       if ((fd2 = open(",delete-me",
 		      O_WRONLY | O_CREAT | O_EXCL,
@@ -44,7 +58,9 @@ int main(int argc, char *argv[])
       unlink(",delete-me");
       if (fd2 != fd) { if (dup2(fd2, fd) < 0) fail("dup2"); close(fd2); }
       if (fstat(fd, &st)) fail("fstat");
-      ino[i] = st.st_ino;
+      ino[i] = HACK_INODE(st.st_ino);
+      if (verbose)
+	printf("open fd %d[%d] = ino %lu\n", fd, i, (unsigned long)ino[i]);
     }
   }
 
@@ -58,8 +74,11 @@ int main(int argc, char *argv[])
     } else if (fstat(fd, &st)) {
       printf("fstat %d[%d] failed: %s\n", fd, i, strerror(errno));
       win = 0;
-    } else if (st.st_ino != ino[i]) {
-      printf("ino %d[%d] wrong\n", fd, i);
+    } else if (HACK_INODE(st.st_ino) != ino[i]) {
+      if (!verbose) printf("ino %d[%d] wrong\n", fd, i);
+      else printf("ino %d[%d] = %lu != %lu\n", fd, i,
+		  (unsigned long)HACK_INODE(st.st_ino),
+		  (unsigned long)ino[i]);
       win = 0;
     }
   }