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os-posix: simplify os_find_datadir 

Use g_build_filename instead of sprintf, and g_autofree instead of
manual freeing.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2019-09-18 12:24:10 +04:00 committed by Paolo Bonzini
parent 3819af6e6a
commit 6dd2dacedd
1 changed files with 12 additions and 27 deletions
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39
os-posix.c
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@ -80,41 +80,26 @@ void os_setup_signal_handling(void)
sigaction(SIGTERM, &act, NULL);
}
/* Find a likely location for support files using the location of the binary.
For installed binaries this will be "$bindir/../share/qemu". When
running from the build tree this will be "$bindir/../pc-bios". */
#define SHARE_SUFFIX "/share/qemu"
#define BUILD_SUFFIX "/pc-bios"
/*
* 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.
*/
char *os_find_datadir(void)
{
char *dir, *exec_dir;
char *res;
size_t max_len;
g_autofree char *exec_dir = NULL;
g_autofree char *dir = NULL;
exec_dir = qemu_get_exec_dir();
if (exec_dir == NULL) {
return NULL;
}
dir = g_path_get_dirname(exec_dir);
g_return_val_if_fail(exec_dir != NULL, NULL);
max_len = strlen(dir) +
MAX(strlen(SHARE_SUFFIX), strlen(BUILD_SUFFIX)) + 1;
res = g_malloc0(max_len);
snprintf(res, max_len, "%s%s", dir, SHARE_SUFFIX);
if (access(res, R_OK)) {
snprintf(res, max_len, "%s%s", dir, BUILD_SUFFIX);
if (access(res, R_OK)) {
g_free(res);
res = NULL;
}
dir = g_build_filename(exec_dir, "..", "pc-bios", NULL);
if (g_file_test(dir, G_FILE_TEST_IS_DIR)) {
return g_steal_pointer(&dir);
}
g_free(dir);
g_free(exec_dir);
return res;
return g_strdup(CONFIG_QEMU_DATADIR);
}
#undef SHARE_SUFFIX
#undef BUILD_SUFFIX
void os_set_proc_name(const char *s)
{