[virtio-9p] Make rpath thread safe

Current rpath inline function is heavily used in all system calls.
This function has a static buffer making it a non-thread safe function.
This patch introduces new thread-safe routine and makes use of it.

Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/hw/9pfs/virtio-9p-xattr.h b/hw/9pfs/virtio-9p-xattr.h
index 2bbae2dcb5..247e414ebd 100644
--- a/hw/9pfs/virtio-9p-xattr.h
+++ b/hw/9pfs/virtio-9p-xattr.h
@@ -54,20 +54,23 @@ ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value,
 static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,
                                   const char *name, void *value, size_t size)
 {
-    return lgetxattr(rpath(ctx, path), name, value, size);
+    char buffer[PATH_MAX];
+    return lgetxattr(rpath(ctx, path, buffer), name, value, size);
 }
 
 static inline int pt_setxattr(FsContext *ctx, const char *path,
                               const char *name, void *value,
                               size_t size, int flags)
 {
-    return lsetxattr(rpath(ctx, path), name, value, size, flags);
+    char buffer[PATH_MAX];
+    return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
 }
 
 static inline int pt_removexattr(FsContext *ctx,
                                  const char *path, const char *name)
 {
-    return lremovexattr(rpath(ctx, path), name);
+    char buffer[PATH_MAX];
+    return lremovexattr(rpath(ctx, path, buffer), name);
 }
 
 static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,