usb-mtp: add sanity checks on rootdir

[mirror_qemu.git] / qemu-img.c

diff --git a/qemu-img.c b/qemu-img.c
index 79983772de39e3e2b9f0d425a4043f28f0990716..7daa05e51a53b63a26ae50ab02609afc12327f60 100644 (file)
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -38,10 +38,10 @@
 #include "qemu/option.h"
 #include "qemu/error-report.h"
 #include "qemu/log.h"
+#include "qemu/main-loop.h"
 #include "qemu/module.h"
 #include "qemu/units.h"
 #include "qom/object_interfaces.h"
-#include "sysemu/sysemu.h"
 #include "sysemu/block-backend.h"
 #include "block/block_int.h"
 #include "block/blockjob.h"
@@ -1578,6 +1578,7 @@ typedef struct ImgConvertState {
     bool has_zero_init;
     bool compressed;
     bool unallocated_blocks_are_zero;
+    bool target_is_new;
     bool target_has_backing;
     int64_t target_backing_sectors; /* negative if unknown */
     bool wr_in_order;
@@ -1975,9 +1976,11 @@ static int convert_do_copy(ImgConvertState *s)
     int64_t sector_num = 0;
 
     /* Check whether we have zero initialisation or can get it efficiently */
-    s->has_zero_init = s->min_sparse && !s->target_has_backing
-                     ? bdrv_has_zero_init(blk_bs(s->target))
-                     : false;
+    if (s->target_is_new && s->min_sparse && !s->target_has_backing) {
+        s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target));
+    } else {
+        s->has_zero_init = false;
+    }
 
     if (!s->has_zero_init && !s->target_has_backing &&
         bdrv_can_write_zeroes_with_unmap(blk_bs(s->target)))
@@ -2231,6 +2234,11 @@ static int img_convert(int argc, char **argv)
         goto fail_getopt;
     }
 
+    if (skip_create && options) {
+        warn_report("-o has no effect when skipping image creation");
+        warn_report("This will become an error in future QEMU versions.");
+    }
+
     s.src_num = argc - optind - 1;
     out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL;
 
@@ -2423,6 +2431,8 @@ static int img_convert(int argc, char **argv)
         }
     }
 
+    s.target_is_new = !skip_create;
+
     flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR;
     ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
     if (ret < 0) {