void postfork(void)
{
libxl_postfork_child_noexec(ctx); /* in case we don't exit/exec */
ctx = 0;
xl_ctx_alloc();
}
int main(int argc, char **argv)
{
int opt = 0;
char *cmd = 0;
struct cmd_spec *cspec;
int ret;
void *config_data = 0;
int config_len = 0;
while ((opt = getopt(argc, argv, "+vftN")) >= 0) {
switch (opt) {
case 'v':
if (minmsglevel > 0) minmsglevel--;
break;
case 'N':
dryrun_only = 1;
break;
case 'f':
force_execution = 1;
break;
case 't':
progress_use_cr = 1;
break;
default:
fprintf(stderr, "unknown global option\n");
exit(EXIT_FAILURE);
}
}
cmd = argv[optind];
if (!cmd) {
help(NULL);
exit(EXIT_FAILURE);
}
opterr = 0;
logger = xtl_createlogger_stdiostream(stderr, minmsglevel,
(progress_use_cr ? XTL_STDIOSTREAM_PROGRESS_USE_CR : 0));
if (!logger) exit(EXIT_FAILURE);
atexit(xl_ctx_free);
xl_ctx_alloc();
ret = libxl_read_file_contents(ctx, XL_GLOBAL_CONFIG,
&config_data, &config_len);
if (ret)
fprintf(stderr, "Failed to read config file: %s: %s\n",
XL_GLOBAL_CONFIG, strerror(errno));
parse_global_config(XL_GLOBAL_CONFIG, config_data, config_len);
free(config_data);
/* Reset options for per-command use of getopt. */
argv += optind;
argc -= optind;
optind = 1;
cspec = cmdtable_lookup(cmd);
if (cspec) {
if (dryrun_only && !cspec->can_dryrun) {
fprintf(stderr, "command does not implement -N (dryrun) option\n");
ret = EXIT_FAILURE;
goto xit;
}
ret = cspec->cmd_impl(argc, argv);
} else if (!strcmp(cmd, "help")) {
help(argv[1]);
ret = EXIT_SUCCESS;
} else {
fprintf(stderr, "command not implemented\n");
ret = EXIT_FAILURE;
}
xit:
return ret;
}
int main(int argc, char **argv)
{
int opt = 0;
char *cmd = 0;
struct cmd_spec *cspec;
int ret;
void *config_data = 0;
int config_len = 0;
const char *locks[] = XEND_LOCK;
while ((opt = getopt(argc, argv, "+vfN")) >= 0) {
switch (opt) {
case 'v':
if (minmsglevel > 0) minmsglevel--;
break;
case 'N':
dryrun_only = 1;
break;
case 'f':
force_execution = 1;
break;
default:
fprintf(stderr, "unknown global option\n");
exit(2);
}
}
cmd = argv[optind];
if (!cmd) {
help(NULL);
exit(1);
}
opterr = 0;
logger = xtl_createlogger_stdiostream(stderr, minmsglevel, 0);
if (!logger) exit(1);
atexit(xl_ctx_free);
xl_ctx_alloc();
ret = libxl_read_file_contents(ctx, XL_GLOBAL_CONFIG,
&config_data, &config_len);
if (ret)
fprintf(stderr, "Failed to read config file: %s: %s\n",
XL_GLOBAL_CONFIG, strerror(errno));
parse_global_config(XL_GLOBAL_CONFIG, config_data, config_len);
free(config_data);
/* Reset options for per-command use of getopt. */
argv += optind;
argc -= optind;
optind = 1;
cspec = cmdtable_lookup(cmd);
if (cspec) {
if (dryrun_only && !cspec->can_dryrun) {
fprintf(stderr, "command does not implement -N (dryrun) option\n");
ret = 1;
goto xit;
}
if (cspec->modifies && !dryrun_only) {
for (int i = 0; i < sizeof(locks)/sizeof(locks[0]); i++) {
if (!access(locks[i], F_OK) && !force_execution) {
fprintf(stderr,
"xend is running, which may cause unpredictable results when using\n"
"this xl command. Please shut down xend before continuing.\n\n"
"(This check can be overridden with the -f option.)\n"
);
ret = 1;
goto xit;
}
}
}
ret = cspec->cmd_impl(argc, argv);
} else if (!strcmp(cmd, "help")) {
help(argv[1]);
ret = 0;
} else {
fprintf(stderr, "command not implemented\n");
ret = 1;
}
xit:
return ret;
}
