Attachment 901471 Details for Bug 1102881 – New qemu debug patch

[patch] New qemu debug patch

qemu-debug.patch (text/plain), 2.16 KB, created by Adam Litke on 2014-06-02 14:36:27 UTC

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Creator: Adam Litke

Created: 2014-06-02 14:36:27 UTC

Size: 2.16 KB

patch

obsolete

>diff -pu qemu-1.6.2.orig/block.c qemu-1.6.2/block.c
>--- qemu-1.6.2.orig/block.c	2014-05-23 16:21:33.851990549 -0400
>+++ qemu-1.6.2/block.c	2014-06-02 10:10:21.147729407 -0400
>@@ -45,6 +45,8 @@
> #endif
> #endif
> 
>+#include <string.h>
>+
> #ifdef _WIN32
> #include <windows.h>
> #endif
>@@ -3294,6 +3296,7 @@ BlockDriverState *bdrv_find_backing_imag
>     if (!bs || !bs->drv || !backing_file) {
>         return NULL;
>     }
>+    printf("bdrv_find_backing_image: looking for %s\n", backing_file);
> 
>     filename_full     = g_malloc(PATH_MAX);
>     backing_file_full = g_malloc(PATH_MAX);
>@@ -3302,11 +3305,12 @@ BlockDriverState *bdrv_find_backing_imag
>     is_protocol = path_has_protocol(backing_file);
> 
>     for (curr_bs = bs; curr_bs->backing_hd; curr_bs = curr_bs->backing_hd) {
>-
>+        printf(" -> %s\n", curr_bs->backing_file);
>         /* If either of the filename paths is actually a protocol, then
>          * compare unmodified paths; otherwise make paths relative */
>         if (is_protocol || path_has_protocol(curr_bs->backing_file)) {
>             if (strcmp(backing_file, curr_bs->backing_file) == 0) {
>+                printf("1\n");
>                 retval = curr_bs->backing_hd;
>                 break;
>             }
>@@ -3318,6 +3322,9 @@ BlockDriverState *bdrv_find_backing_imag
> 
>             /* We are going to compare absolute pathnames */
>             if (!realpath(filename_tmp, filename_full)) {
>+                printf("2\n");
>+                printf("\ttmp: %s\n\tfull: %s\n", filename_tmp, filename_full);
>+                printf("realpath failed with error: %s\n", strerror(errno));
>                 continue;
>             }
> 
>@@ -3327,10 +3334,14 @@ BlockDriverState *bdrv_find_backing_imag
>                          curr_bs->backing_file);
> 
>             if (!realpath(filename_tmp, backing_file_full)) {
>+                printf("3\n");
>                 continue;
>             }
> 
>+            printf("backing_file_full: %s, filename_full: %s\n",
>+                   backing_file_full, filename_full);
>             if (strcmp(backing_file_full, filename_full) == 0) {
>+                printf("4\n");
>                 retval = curr_bs->backing_hd;
>                 break;
>             }

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