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Re: [PATCH 03/51] block: Unify the get_tmp_filename() implementation


From: Marc-André Lureau
Subject: Re: [PATCH 03/51] block: Unify the get_tmp_filename() implementation
Date: Wed, 31 Aug 2022 16:54:41 +0400

Hi Bin

On Wed, Aug 24, 2022 at 1:42 PM Bin Meng <bmeng.cn@gmail.com> wrote:
From: Bin Meng <bin.meng@windriver.com>

At present get_tmp_filename() has platform specific implementations
to get the directory to use for temporary files. Switch over to use
g_get_tmp_dir() which works on all supported platforms.


It "works" quite differently though. Is this patch really necessary here?

If yes, please explain why.

If not, I suggest you drop optional / rfc / "nice to have" patches from the series. It will help to get it merged faster.

thanks

 
Signed-off-by: Bin Meng <bin.meng@windriver.com>
---

 block.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/block.c b/block.c
index bc85f46eed..d06df47f72 100644
--- a/block.c
+++ b/block.c
@@ -864,21 +864,10 @@ int bdrv_probe_geometry(BlockDriverState *bs, HDGeometry *geo)
  */
 int get_tmp_filename(char *filename, int size)
 {
-#ifdef _WIN32
-    char temp_dir[MAX_PATH];
-    /* GetTempFileName requires that its output buffer (4th param)
-       have length MAX_PATH or greater.  */
-    assert(size >= MAX_PATH);
-    return (GetTempPath(MAX_PATH, temp_dir)
-            && GetTempFileName(temp_dir, "qem", 0, filename)
-            ? 0 : -GetLastError());
-#else
     int fd;
     const char *tmpdir;
-    tmpdir = getenv("TMPDIR");
-    if (!tmpdir) {
-        tmpdir = "/var/tmp";
-    }
+    tmpdir = g_get_tmp_dir();
+
     if (snprintf(filename, size, "%s/vl.XXXXXX", tmpdir) >= size) {
         return -EOVERFLOW;
     }
@@ -891,7 +880,6 @@ int get_tmp_filename(char *filename, int size)
         return -errno;
     }
     return 0;
-#endif
 }

 /*
--
2.34.1




--
Marc-André Lureau

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