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-rw-r--r--src/vfs-mount.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vfs-mount.c b/src/vfs-mount.c
index b9136895..327e3531 100644
--- a/src/vfs-mount.c
+++ b/src/vfs-mount.c
@@ -147,6 +147,9 @@ gpgme_op_vfs_transact (gpgme_ctx_t ctx,
gpgme_error_t *op_err)
{
gpgme_error_t err;
+
+ if (!ctx)
+ return gpg_error (GPG_ERR_INV_VALUE);
err = vfs_start (ctx, 1, command, data_cb, data_cb_value,
inq_cb, inq_cb_value, status_cb, status_cb_value);
@@ -232,6 +235,10 @@ gpgme_op_vfs_mount (gpgme_ctx_t ctx, const char *container_file,
TRACE_BEG4 (DEBUG_CTX, "gpgme_op_vfs_mount", ctx,
"container=%s, mount_dir=%s, flags=0x%x, op_err=%p",
container_file, mount_dir, flags, op_err);
+
+ if (!ctx)
+ return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
+
err = _gpgme_op_vfs_mount (ctx, container_file, mount_dir, flags, op_err);
return TRACE_ERR (err);
}