1 /* 2 * QEMU firmware and keymap file search 3 * 4 * Copyright (c) 2003-2020 QEMU contributors 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "qemu/datadir.h" 27 #include "qemu/cutils.h" 28 #include "trace.h" 29 30 static const char *data_dir[16]; 31 static int data_dir_idx; 32 33 char *qemu_find_file(QemuFileType type, const char *name) 34 { 35 int i; 36 const char *subdir; 37 char *buf; 38 39 /* Try the name as a straight path first */ 40 if (access(name, R_OK) == 0) { 41 trace_load_file(name, name); 42 return g_strdup(name); 43 } 44 45 switch (type) { 46 case QEMU_FILE_TYPE_BIOS: 47 subdir = ""; 48 break; 49 case QEMU_FILE_TYPE_DTB: 50 subdir = "dtb/"; 51 break; 52 case QEMU_FILE_TYPE_KEYMAP: 53 subdir = "keymaps/"; 54 break; 55 default: 56 abort(); 57 } 58 59 for (i = 0; i < data_dir_idx; i++) { 60 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name); 61 if (access(buf, R_OK) == 0) { 62 trace_load_file(name, buf); 63 return buf; 64 } 65 g_free(buf); 66 } 67 return NULL; 68 } 69 70 void qemu_add_data_dir(char *path) 71 { 72 int i; 73 74 if (path == NULL) { 75 return; 76 } 77 if (data_dir_idx == ARRAY_SIZE(data_dir)) { 78 return; 79 } 80 for (i = 0; i < data_dir_idx; i++) { 81 if (strcmp(data_dir[i], path) == 0) { 82 g_free(path); /* duplicate */ 83 return; 84 } 85 } 86 data_dir[data_dir_idx++] = path; 87 } 88 89 void qemu_add_default_firmwarepath(void) 90 { 91 static const char * const dirs[] = { 92 CONFIG_QEMU_FIRMWAREPATH 93 NULL 94 }; 95 96 size_t i; 97 98 /* add configured firmware directories */ 99 for (i = 0; dirs[i] != NULL; i++) { 100 qemu_add_data_dir(get_relocated_path(dirs[i])); 101 } 102 103 /* try to find datadir relative to the executable path */ 104 qemu_add_data_dir(get_relocated_path(CONFIG_QEMU_DATADIR)); 105 } 106 107 void qemu_list_data_dirs(void) 108 { 109 int i; 110 for (i = 0; i < data_dir_idx; i++) { 111 printf("%s\n", data_dir[i]); 112 } 113 } 114