[PULL,01/16] block: Fixes nfs on msys2/mingw

Commit Message

Yonggang Luo Sept. 8, 2020, 6:49 p.m. UTC

Signed-off-by: Yonggang Luo <[e-mail]>
---
 block/nfs.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

Comments

Eric Blake Sept. 8, 2020, 6:57 p.m. UTC | #1

On 9/8/20 1:49 PM, Yonggang Luo wrote:
> Signed-off-by: Yonggang Luo <[e-mail]>
> ---
>   block/nfs.c | 26 +++++++++++++++++---------
>   1 file changed, 17 insertions(+), 9 deletions(-)

The commit message is too sparse.  You say that nfs is broken, but fail 
to give any details how, or why this patch improves the situation. 
Also, the patch has no 'Reviewed-by' tag from anyone, and accepting 
unreviewed code into mainline can be risky (we tolerate it from 
well-established contributors, but you are still working toward that point).

Patch

diff --git a/block/nfs.c b/block/nfs.c
index 61a249a9fc..34b2cd5708 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -24,7 +24,9 @@ 
 
 #include "qemu/osdep.h"
 
+#if !defined(_WIN32)
 #include <poll.h>
+#endif
 #include "qemu/config-file.h"
 #include "qemu/error-report.h"
 #include "qapi/error.h"
@@ -51,6 +53,12 @@ 
 #define QEMU_NFS_MAX_PAGECACHE_SIZE (8388608 / NFS_BLKSIZE)
 #define QEMU_NFS_MAX_DEBUG_LEVEL 2
 
+#if defined (_WIN32)
+#define nfs_stat __stat64
+#else
+#define nfs_stat stat
+#endif
+
 typedef struct NFSClient {
     struct nfs_context *context;
     struct nfsfh *fh;
@@ -58,7 +66,7 @@  typedef struct NFSClient {
     bool has_zero_init;
     AioContext *aio_context;
     QemuMutex mutex;
-    blkcnt_t st_blocks;
+    int64_t st_size;
     bool cache_used;
     NFSServer *server;
     char *path;
@@ -70,7 +78,7 @@  typedef struct NFSRPC {
     int ret;
     int complete;
     QEMUIOVector *iov;
-    struct stat *st;
+    struct nfs_stat *st;
     Coroutine *co;
     NFSClient *client;
 } NFSRPC;
@@ -419,7 +427,7 @@  static int64_t nfs_client_open(NFSClient *client, BlockdevOptionsNfs *opts,
                                int flags, int open_flags, Error **errp)
 {
     int64_t ret = -EINVAL;
-    struct stat st;
+    struct nfs_stat st;
     char *file = NULL, *strp = NULL;
 
     qemu_mutex_init(&client->mutex);
@@ -545,7 +553,7 @@  static int64_t nfs_client_open(NFSClient *client, BlockdevOptionsNfs *opts,
     }
 
     ret = DIV_ROUND_UP(st.st_size, BDRV_SECTOR_SIZE);
-    client->st_blocks = st.st_blocks;
+    client->st_size = st.st_size;
     client->has_zero_init = S_ISREG(st.st_mode);
     *strp = '/';
     goto out;
@@ -729,11 +737,11 @@  static int64_t nfs_get_allocated_file_size(BlockDriverState *bs)
 {
     NFSClient *client = bs->opaque;
     NFSRPC task = {0};
-    struct stat st;
+    struct nfs_stat st;
 
     if (bdrv_is_read_only(bs) &&
         !(bs->open_flags & BDRV_O_NOCACHE)) {
-        return client->st_blocks * 512;
+        return client->st_size;
     }
 
     task.bs = bs;
@@ -746,7 +754,7 @@  static int64_t nfs_get_allocated_file_size(BlockDriverState *bs)
     nfs_set_events(client);
     BDRV_POLL_WHILE(bs, !task.complete);
 
-    return (task.ret < 0 ? task.ret : st.st_blocks * 512);
+    return (task.ret < 0 ? task.ret : st.st_size);
 }
 
 static int coroutine_fn
@@ -778,7 +786,7 @@  static int nfs_reopen_prepare(BDRVReopenState *state,
                               BlockReopenQueue *queue, Error **errp)
 {
     NFSClient *client = state->bs->opaque;
-    struct stat st;
+    struct nfs_stat st;
     int ret = 0;
 
     if (state->flags & BDRV_O_RDWR && bdrv_is_read_only(state->bs)) {
@@ -800,7 +808,7 @@  static int nfs_reopen_prepare(BDRVReopenState *state,
                        nfs_get_error(client->context));
             return ret;
         }
-        client->st_blocks = st.st_blocks;
+        client->st_size = st.st_size;
     }
 
     return 0;