[Qemu-devel] [PATCH 2/3] hw/9pfs/virtio-9p-local.c: use snprintf() instead of sprintf()

[Chen Gang]

'ctx->fs_root' + 'path'/'fullname.data' may be larger than PATH_MAX, so
need use snprintf() instead of sprintf() just like another area have done in 
9pfs.

Signed-off-by: Chen Gang <address@hidden>
---
 hw/9pfs/virtio-9p-local.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/hw/9pfs/virtio-9p-local.c b/hw/9pfs/virtio-9p-local.c
index 77a04cd..61be75a 100644
--- a/hw/9pfs/virtio-9p-local.c
+++ b/hw/9pfs/virtio-9p-local.c
@@ -898,7 +898,8 @@ static int local_remove(FsContext *ctx, const char *path)
          * directory
          */
         if (S_ISDIR(stbuf.st_mode)) {
-            sprintf(buffer, "%s/%s/%s", ctx->fs_root, path, VIRTFS_META_DIR);
+            snprintf(buffer, ARRAY_SIZE(buffer), "%s/%s/%s",
+                     ctx->fs_root, path, VIRTFS_META_DIR);
             err = remove(buffer);
             if (err < 0 && errno != ENOENT) {
                 /*
@@ -1033,8 +1034,8 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
              * If directory remove .virtfs_metadata contained in the
              * directory
              */
-            sprintf(buffer, "%s/%s/%s", ctx->fs_root,
-                    fullname.data, VIRTFS_META_DIR);
+            snprintf(buffer, ARRAY_SIZE(buffer), "%s/%s/%s", ctx->fs_root,
+                     fullname.data, VIRTFS_META_DIR);
             ret = remove(buffer);
             if (ret < 0 && errno != ENOENT) {
                 /*
-- 
1.7.11.7