vl: extract softmmu/datadir.c

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 133 insertions, 92 deletions

diff --git a/softmmu/datadir.c b/softmmu/datadir.c
new file mode 100644
index 0000000000..504c4665be
--- /dev/null
+++ b/softmmu/datadir.c
@@ -0,0 +1,129 @@
+/*
+ * QEMU firmware and keymap file search
+ *
+ * Copyright (c) 2003-2020 QEMU contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "qemu/datadir.h"
+#include "qemu/cutils.h"
+#include "trace.h"
+
+static const char *data_dir[16];
+static int data_dir_idx;
+
+char *qemu_find_file(int type, const char *name)
+{
+    int i;
+    const char *subdir;
+    char *buf;
+
+    /* Try the name as a straight path first */
+    if (access(name, R_OK) == 0) {
+        trace_load_file(name, name);
+        return g_strdup(name);
+    }
+
+    switch (type) {
+    case QEMU_FILE_TYPE_BIOS:
+        subdir = "";
+        break;
+    case QEMU_FILE_TYPE_KEYMAP:
+        subdir = "keymaps/";
+        break;
+    default:
+        abort();
+    }
+
+    for (i = 0; i < data_dir_idx; i++) {
+        buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
+        if (access(buf, R_OK) == 0) {
+            trace_load_file(name, buf);
+            return buf;
+        }
+        g_free(buf);
+    }
+    return NULL;
+}
+
+void qemu_add_data_dir(char *path)
+{
+    int i;
+
+    if (path == NULL) {
+        return;
+    }
+    if (data_dir_idx == ARRAY_SIZE(data_dir)) {
+        return;
+    }
+    for (i = 0; i < data_dir_idx; i++) {
+        if (strcmp(data_dir[i], path) == 0) {
+            g_free(path); /* duplicate */
+            return;
+        }
+    }
+    data_dir[data_dir_idx++] = path;
+}
+
+/*
+ * Find a likely location for support files using the location of the binary.
+ * When running from the build tree this will be "$bindir/pc-bios".
+ * Otherwise, this is CONFIG_QEMU_DATADIR (possibly relocated).
+ *
+ * The caller must use g_free() to free the returned data when it is
+ * no longer required.
+ */
+static char *find_datadir(void)
+{
+    g_autofree char *dir = NULL;
+
+    dir = g_build_filename(qemu_get_exec_dir(), "pc-bios", NULL);
+    if (g_file_test(dir, G_FILE_TEST_IS_DIR)) {
+        return g_steal_pointer(&dir);
+    }
+
+    return get_relocated_path(CONFIG_QEMU_DATADIR);
+}
+
+void qemu_add_default_firmwarepath(void)
+{
+    char **dirs;
+    size_t i;
+
+    /* add configured firmware directories */
+    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, G_SEARCHPATH_SEPARATOR_S, 0);
+    for (i = 0; dirs[i] != NULL; i++) {
+        qemu_add_data_dir(get_relocated_path(dirs[i]));
+    }
+    g_strfreev(dirs);
+
+    /* try to find datadir relative to the executable path */
+    qemu_add_data_dir(find_datadir());
+}
+
+void qemu_list_data_dirs(void)
+{
+    int i;
+    for (i = 0; i < data_dir_idx; i++) {
+        printf("%s\n", data_dir[i]);
+    }
+}
diff --git a/softmmu/meson.build b/softmmu/meson.build
index 8f7210b4f0..7b52339e7a 100644
--- a/softmmu/meson.build
+++ b/softmmu/meson.build
@@ -3,6 +3,7 @@ specific_ss.add(when: 'CONFIG_SOFTMMU', if_true: [files(
   'balloon.c',
   'cpus.c',
   'cpu-throttle.c',
+  'datadir.c',
   'physmem.c',
   'ioport.c',
   'memory.c',
diff --git a/softmmu/vl.c b/softmmu/vl.c
index dc8a47efcb..28aafc1101 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -24,6 +24,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
+#include "qemu/datadir.h"
 #include "qemu/units.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
@@ -128,8 +129,6 @@ typedef struct BlockdevOptionsQueueEntry {
 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
 
 static const char *cpu_option;
-static const char *data_dir[16];
-static int data_dir_idx;
 static const char *mem_path;
 static const char *boot_order;
 static const char *boot_once;
@@ -1994,59 +1993,6 @@ static void parse_display(const char *p)
     }
 }
 
-char *qemu_find_file(int type, const char *name)
-{
-    int i;
-    const char *subdir;
-    char *buf;
-
-    /* Try the name as a straight path first */
-    if (access(name, R_OK) == 0) {
-        trace_load_file(name, name);
-        return g_strdup(name);
-    }
-
-    switch (type) {
-    case QEMU_FILE_TYPE_BIOS:
-        subdir = "";
-        break;
-    case QEMU_FILE_TYPE_KEYMAP:
-        subdir = "keymaps/";
-        break;
-    default:
-        abort();
-    }
-
-    for (i = 0; i < data_dir_idx; i++) {
-        buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
-        if (access(buf, R_OK) == 0) {
-            trace_load_file(name, buf);
-            return buf;
-        }
-        g_free(buf);
-    }
-    return NULL;
-}
-
-void qemu_add_data_dir(char *path)
-{
-    int i;
-
-    if (path == NULL) {
-        return;
-    }
-    if (data_dir_idx == ARRAY_SIZE(data_dir)) {
-        return;
-    }
-    for (i = 0; i < data_dir_idx; i++) {
-        if (strcmp(data_dir[i], path) == 0) {
-            g_free(path); /* duplicate */
-            return;
-        }
-    }
-    data_dir[data_dir_idx++] = path;
-}
-
 static inline bool nonempty_str(const char *str)
 {
     return str && *str;
@@ -3187,26 +3133,6 @@ static void create_default_memdev(MachineState *ms, const char *path)
                             &error_fatal);
 }
 
-/*
- * Find a likely location for support files using the location of the binary.
- * When running from the build tree this will be "$bindir/pc-bios".
- * Otherwise, this is CONFIG_QEMU_DATADIR (possibly relocated).
- *
- * The caller must use g_free() to free the returned data when it is
- * no longer required.
- */
-static char *find_datadir(void)
-{
-    g_autofree char *dir = NULL;
-
-    dir = g_build_filename(qemu_get_exec_dir(), "pc-bios", NULL);
-    if (g_file_test(dir, G_FILE_TEST_IS_DIR)) {
-        return g_steal_pointer(&dir);
-    }
-
-    return get_relocated_path(CONFIG_QEMU_DATADIR);
-}
-
 static void qemu_validate_options(void)
 {
     QemuOpts *machine_opts = qemu_get_machine_opts();
@@ -3266,9 +3192,6 @@ static void qemu_process_sugar_options(void)
 
 static void qemu_process_early_options(void)
 {
-    char **dirs;
-    int i;
-
 #ifdef CONFIG_SECCOMP
     QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
     if (olist) {
@@ -3306,21 +3229,11 @@ static void qemu_process_early_options(void)
         qemu_set_log(0);
     }
 
-    /* add configured firmware directories */
-    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, G_SEARCHPATH_SEPARATOR_S, 0);
-    for (i = 0; dirs[i] != NULL; i++) {
-        qemu_add_data_dir(get_relocated_path(dirs[i]));
-    }
-    g_strfreev(dirs);
-
-    /* try to find datadir relative to the executable path */
-    qemu_add_data_dir(find_datadir());
+    qemu_add_default_firmwarepath();
 }
 
 static void qemu_process_help_options(void)
 {
-    int i;
-
     /*
      * Check for -cpu help and -device help before we call select_machine(),
      * which will return an error if the architecture has no default machine
@@ -3339,9 +3252,7 @@ static void qemu_process_help_options(void)
 
     /* -L help lists the data directories and exits. */
     if (list_data_dirs) {
-        for (i = 0; i < data_dir_idx; i++) {
-            printf("%s\n", data_dir[i]);
-        }
+        qemu_list_data_dirs();
         exit(0);
     }
 }