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/*
* 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]);
}
}
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