int
get_macosx_version (int *major_version_num, int *minor_version_num,
int *subminor_version_num)
{
int exit_status = 1;
char *tmp_name = tmpnam(NULL);
if (tmp_name == NULL) {
perror(global_prog_name);
goto error_cleanup;
}
char *uname_cmd;
int ret = asprintf(&uname_cmd, "uname -r > %s", tmp_name);
if (ret == -1 || uname_cmd == NULL) {
fprintf(stderr, "Could not allocate enough memory for command string: uname -r > %s\n", tmp_name);
goto error_cleanup;
}
ret = system(uname_cmd);
if (ret != 0) {
fprintf(stderr, "error in %s: system(\"%s\") returned %d\n",
global_prog_name, uname_cmd, ret);
goto error_cleanup;
}
FILE *f = fopen(tmp_name, "r");
if (f == NULL) {
perror(global_prog_name);
goto error_cleanup;
}
char buf[512];
if (fgets(buf, sizeof(buf), f) == NULL) {
perror(global_prog_name);
goto error_cleanup;
}
ret = sscanf(buf, "%d.%d.%d",
major_version_num, minor_version_num, subminor_version_num);
fclose(f);
cleanup_temp_file(tmp_name);
if (ret < 2) {
fprintf(stderr, "%s: Output of 'uname -r' was '%s', from which no major and minor version number could be parsed.\n",
global_prog_name, buf);
exit(1);
}
return ret;
error_cleanup:
if (tmp_name != NULL) {
cleanup_temp_file(tmp_name);
}
exit(exit_status);
}
/* Delete a closed temporary FILE for diversion DIVNUM. */
static int
m4_tmpremove (int divnum)
{
if (divnum == tmp_file1_owner)
{
int result = close_stream_temp (tmp_file1);
if (result)
return result;
tmp_file1_owner = 0;
}
else if (divnum == tmp_file2_owner)
{
int result = close_stream_temp (tmp_file2);
if (result)
return result;
tmp_file2_owner = 0;
}
return cleanup_temp_file (output_temp_dir, m4_tmpname (divnum));
}
