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From a577ed3eaa3c3ba84133d9bea1907c69c01063ad Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Sat, 11 Jan 2014 18:00:06 +0100
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Subject: [PATCH 16/22] i440fx-test: generate temporary firmware blob
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RH-Author: Laszlo Ersek <lersek@redhat.com>
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Message-id: <1389463208-6278-17-git-send-email-lersek@redhat.com>
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Patchwork-id: 56629
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 16/18] i440fx-test: generate temporary firmware blob
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Bugzilla: 1032346
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Amos Kong <akong@redhat.com>
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RH-Acked-by: Andrew Jones <drjones@redhat.com>
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The blob is 64K in size and contains 0x00..0xFF repeatedly.
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The client code added to main() wouldn't make much sense in the long term.
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It helps with debugging and it silences gcc about create_blob_file() being
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unused, and we'll replace it in the next patch anyway.
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 27d59ccd89a5b112e5a5804250440ea30dbfb891)
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---
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 tests/i440fx-test.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++
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 1 file changed, 60 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 tests/i440fx-test.c |   60 +++++++++++++++++++++++++++++++++++++++++++++++++++
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 1 files changed, 60 insertions(+), 0 deletions(-)
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diff --git a/tests/i440fx-test.c b/tests/i440fx-test.c
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index 3962bca..b6e0cd3 100644
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--- a/tests/i440fx-test.c
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+++ b/tests/i440fx-test.c
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@@ -20,6 +20,11 @@
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 #include <glib.h>
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 #include <string.h>
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+#include <stdio.h>
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+#include <unistd.h>
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+#include <errno.h>
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+#include <sys mman.h="">
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+#include <stdlib.h>
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 #define BROKEN 1
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@@ -272,13 +277,68 @@ static void test_i440fx_pam(gconstpointer opaque)
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     qtest_end();
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 }
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+#define BLOB_SIZE ((size_t)65536)
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+
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+/* Create a blob file, and return its absolute pathname as a dynamically
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+ * allocated string.
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+ * The file is closed before the function returns.
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+ * In case of error, NULL is returned. The function prints the error message.
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+ */
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+static char *create_blob_file(void)
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+{
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+    int ret, fd;
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+    char *pathname;
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+    GError *error = NULL;
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+
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+    ret = -1;
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+    fd = g_file_open_tmp("blob_XXXXXX", &pathname, &error);
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+    if (fd == -1) {
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+        fprintf(stderr, "unable to create blob file: %s\n", error->message);
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+        g_error_free(error);
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+    } else {
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+        if (ftruncate(fd, BLOB_SIZE) == -1) {
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+            fprintf(stderr, "ftruncate(\"%s\", %zu): %s\n", pathname,
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+                    BLOB_SIZE, strerror(errno));
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+        } else {
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+            void *buf;
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+
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+            buf = mmap(NULL, BLOB_SIZE, PROT_WRITE, MAP_SHARED, fd, 0);
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+            if (buf == MAP_FAILED) {
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+                fprintf(stderr, "mmap(\"%s\", %zu): %s\n", pathname, BLOB_SIZE,
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+                        strerror(errno));
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+            } else {
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+                size_t i;
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+
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+                for (i = 0; i < BLOB_SIZE; ++i) {
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+                    ((uint8_t *)buf)[i] = i;
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+                }
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+                munmap(buf, BLOB_SIZE);
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+                ret = 0;
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+            }
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+        }
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+        close(fd);
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+        if (ret == -1) {
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+            unlink(pathname);
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+            g_free(pathname);
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+        }
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+    }
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+
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+    return ret == -1 ? NULL : pathname;
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+}
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+
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 int main(int argc, char **argv)
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 {
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+    char *fw_pathname;
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     TestData data;
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     int ret;
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     g_test_init(&argc, &argv, NULL);
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+    fw_pathname = create_blob_file();
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+    g_assert(fw_pathname != NULL);
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+    unlink(fw_pathname);
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+    g_free(fw_pathname);
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+
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     data.num_cpus = 1;
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     g_test_add_data_func("/i440fx/defaults", &data, test_i440fx_defaults);
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-- 
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1.7.1
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