From ea1edcd7da1a375ef7ccf8aa93b72827b518ad8e Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 18 Aug 2020 11:57:56 +0200 Subject: [PATCH] vl: relocate paths to data directories As an additional advantage, the logic is now unified between POSIX and Win32 systems. Signed-off-by: Paolo Bonzini --- include/qemu-common.h | 1 - include/sysemu/sysemu.h | 2 +- os-posix.c | 20 -------------------- os-win32.c | 11 ----------- softmmu/vl.c | 40 ++++++++++++++++++++++++++++------------ tests/qtest/fuzz/fuzz.c | 5 +++-- 6 files changed, 32 insertions(+), 47 deletions(-) diff --git a/include/qemu-common.h b/include/qemu-common.h index cc902b690d..fda7dc6ca7 100644 --- a/include/qemu-common.h +++ b/include/qemu-common.h @@ -131,7 +131,6 @@ char *qemu_find_file(int type, const char *name); /* OS specific functions */ void os_setup_early_signal_handling(void); -char *os_find_datadir(void); int os_parse_cmd_args(int index, const char *optarg); /* diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 4b6a5c459c..817ff4cf75 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -14,7 +14,7 @@ extern const char *qemu_name; extern QemuUUID qemu_uuid; extern bool qemu_uuid_set; -void qemu_add_data_dir(const char *path); +void qemu_add_data_dir(char *path); void qemu_add_exit_notifier(Notifier *notify); void qemu_remove_exit_notifier(Notifier *notify); diff --git a/os-posix.c b/os-posix.c index 36e344c544..1de2839554 100644 --- a/os-posix.c +++ b/os-posix.c @@ -80,26 +80,6 @@ void os_setup_signal_handling(void) sigaction(SIGTERM, &act, NULL); } -/* - * Find a likely location for support files using the location of the binary. - * When running from the build tree this will be "$bindir/pc-bios". - * Otherwise, this is CONFIG_QEMU_DATADIR. - * - * The caller must use g_free() to free the returned data when it is - * no longer required. - */ -char *os_find_datadir(void) -{ - g_autofree char *dir = NULL; - - dir = g_build_filename(qemu_get_exec_dir(), "pc-bios", NULL); - if (g_file_test(dir, G_FILE_TEST_IS_DIR)) { - return g_steal_pointer(&dir); - } - - return g_strdup(CONFIG_QEMU_DATADIR); -} - void os_set_proc_name(const char *s) { #if defined(PR_SET_NAME) diff --git a/os-win32.c b/os-win32.c index eb8501b9e5..fd1137bab1 100644 --- a/os-win32.c +++ b/os-win32.c @@ -57,17 +57,6 @@ void os_setup_early_signal_handling(void) atexit(os_undo_timer_resolution); } -/* - * Look for support files in the same directory as the executable. - * - * The caller must use g_free() to free the returned data when it is - * no longer required. - */ -char *os_find_datadir(void) -{ - return g_strdup(qemu_get_exec_dir()); -} - void os_set_line_buffering(void) { setbuf(stdout, NULL); diff --git a/softmmu/vl.c b/softmmu/vl.c index 50d8c2e42e..12e8ca22bd 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -2005,7 +2005,7 @@ char *qemu_find_file(int type, const char *name) return NULL; } -void qemu_add_data_dir(const char *path) +void qemu_add_data_dir(char *path) { int i; @@ -2017,10 +2017,11 @@ void qemu_add_data_dir(const char *path) } for (i = 0; i < data_dir_idx; i++) { if (strcmp(data_dir[i], path) == 0) { - return; /* duplicate */ + g_free(path); /* duplicate */ + return; } } - data_dir[data_dir_idx++] = g_strdup(path); + data_dir[data_dir_idx++] = path; } static inline bool nonempty_str(const char *str) @@ -2829,6 +2830,26 @@ static void create_default_memdev(MachineState *ms, const char *path) &error_fatal); } +/* + * Find a likely location for support files using the location of the binary. + * When running from the build tree this will be "$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); +} + void qemu_init(int argc, char **argv, char **envp) { int i; @@ -2862,7 +2883,7 @@ void qemu_init(int argc, char **argv, char **envp) Error *main_loop_err = NULL; Error *err = NULL; bool list_data_dirs = false; - char *dir, **dirs; + char **dirs; const char *mem_path = NULL; bool have_custom_ram_size; BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue); @@ -3195,7 +3216,7 @@ void qemu_init(int argc, char **argv, char **envp) if (is_help_option(optarg)) { list_data_dirs = true; } else { - qemu_add_data_dir(optarg); + qemu_add_data_dir(g_strdup(optarg)); } break; case QEMU_OPTION_bios: @@ -3927,17 +3948,12 @@ void qemu_init(int argc, char **argv, char **envp) /* 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(dirs[i]); + qemu_add_data_dir(get_relocated_path(dirs[i])); } g_strfreev(dirs); /* try to find datadir relative to the executable path */ - dir = os_find_datadir(); - qemu_add_data_dir(dir); - g_free(dir); - - /* add the datadir specified when building */ - qemu_add_data_dir(CONFIG_QEMU_DATADIR); + qemu_add_data_dir(find_datadir()); /* -L help lists the data directories and exits. */ if (list_data_dirs) { diff --git a/tests/qtest/fuzz/fuzz.c b/tests/qtest/fuzz/fuzz.c index c4dc5fa629..d926c490c5 100644 --- a/tests/qtest/fuzz/fuzz.c +++ b/tests/qtest/fuzz/fuzz.c @@ -170,8 +170,9 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char ***envp) datadir = g_build_filename(bindir, "pc-bios", NULL); if (g_file_test(datadir, G_FILE_TEST_IS_DIR)) { qemu_add_data_dir(datadir); - } - g_free(datadir); + } else { + g_free(datadir); + } } else if (*argc > 1) { /* The target is specified as an argument */ target_name = (*argv)[1]; if (!strstr(target_name, "--fuzz-target=")) {