/mandos/trunk : revision 133

56

#include <argp.h> /* struct argp_option, struct

57

argp_state, struct argp,

58

argp_parse(), ARGP_ERR_UNKNOWN,

59

ARGP_KEY_END, ARGP_KEY_ARG, error_t */

59

ARGP_KEY_END, ARGP_KEY_ARG,

60

error_t */

60

61

#include <signal.h> /* struct sigaction, sigemptyset(),

61

62

sigaddset(), sigaction(),

62

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sigprocmask(), SIG_BLOCK, SIGCHLD,

64

65

#include <errno.h> /* errno, EBADF */

65

66

67

#define BUFFER_SIZE 256

67

#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"

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#define PDIR "/lib/mandos/plugins.d"

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#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"

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71

69

72

const char *argp_program_version = "plugin-runner 1.0";

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const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";

71

74

72

struct process;

73

74

typedef struct process{

75

pid_t pid;

76

int fd;

77

char *buffer;

78

size_t buffer_size;

79

size_t buffer_length;

80

bool eof;

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bool completed;

82

int status;

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struct process *next;

84

} process;

75

struct plugin;

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76

86

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typedef struct plugin{

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char *name; /* can be NULL or any plugin name */

90

81

char **environ;

91

82

int envc;

92

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bool disabled;

84

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/* Variables used for running processes*/

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pid_t pid;

87

int fd;

88

char *buffer;

89

size_t buffer_size;

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size_t buffer_length;

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bool eof;

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volatile bool completed;

93

volatile int status;

93

94

struct plugin *next;

94

95

} plugin;

95

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static plugin *getplugin(char *name, plugin **plugin_list){

97

for (plugin *p = *plugin_list; p != NULL; p = p->next){

97

static plugin *plugin_list = NULL;

98

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/* Gets a existing plugin based on name,

100

or if none is found, creates a new one */

101

static plugin *getplugin(char *name){

102

/* Check for exiting plugin with that name */

103

for (plugin *p = plugin_list; p != NULL; p = p->next){

98

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if ((p->name == name)

99

105

or (p->name and name and (strcmp(p->name, name) == 0))){

100

106

return p;

105

111

if (new_plugin == NULL){

106

112

return NULL;

107

113

}

108

char *copy_name = strdup(name);

109

if(copy_name == NULL){

110

return NULL;

114

char *copy_name = NULL;

115

if(name != NULL){

116

copy_name = strdup(name);

117

if(copy_name == NULL){

118

return NULL;

119

}

111

120

}

112

121

113

122

*new_plugin = (plugin) { .name = copy_name,

114

123

.argc = 1,

115

.envc = 0,

116

124

.disabled = false,

117

.next = *plugin_list };

125

.next = plugin_list };

118

126

119

127

new_plugin->argv = malloc(sizeof(char *) * 2);

120

128

if (new_plugin->argv == NULL){

129

free(copy_name);

121

130

free(new_plugin);

122

131

return NULL;

123

132

}

126

135

127

136

new_plugin->environ = malloc(sizeof(char *));

128

137

if(new_plugin->environ == NULL){

138

free(copy_name);

129

139

free(new_plugin->argv);

130

140

free(new_plugin);

131

141

return NULL;

132

142

}

133

143

new_plugin->environ[0] = NULL;

144

134

145

/* Append the new plugin to the list */

135

*plugin_list = new_plugin;

146

plugin_list = new_plugin;

136

147

return new_plugin;

137

148

}

138

149

175

186

return add_to_char_array(def, &(p->environ), &(p->envc));

176

187

}

177

188

178

179

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/*

180

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* Based on the example in the GNU LibC manual chapter 13.13 "File

181

191

* Descriptor Flags".

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return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);

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}

194

204

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process *process_list = NULL;

196

205

197

/* Mark a process as completed when it exits, and save its exit

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/* Mark processes as completed when they exit, and save their exit

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status. */

199

208

void handle_sigchld(__attribute__((unused)) int sig){

200

process *proc = process_list;

201

int status;

202

pid_t pid = wait(&status);

203

if(pid == -1){

204

perror("wait");

205

return;

206

}

207

while(proc != NULL and proc->pid != pid){

208

proc = proc->next;

209

}

210

if(proc == NULL){

211

/* Process not found in process list */

212

return;

213

}

214

proc->status = status;

215

proc->completed = true;

209

while(true){

210

plugin *proc = plugin_list;

211

int status;

212

pid_t pid = waitpid(-1, &status, WNOHANG);

213

if(pid == 0){

214

/* Only still running child processes */

215

break;

216

}

217

if(pid == -1){

218

if (errno != ECHILD){

219

perror("waitpid");

220

}

221

/* No child processes */

222

break;

223

}

224

225

/* A child exited, find it in process_list */

226

while(proc != NULL and proc->pid != pid){

227

proc = proc->next;

228

}

229

if(proc == NULL){

230

/* Process not found in process list */

231

continue;

232

}

233

proc->status = status;

234

proc->completed = true;

235

}

216

236

}

217

237

238

/* Prints out a password to stdout */

218

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bool print_out_password(const char *buffer, size_t length){

219

240

ssize_t ret;

220

241

if(length>0 and buffer[length-1] == '\n'){

230

251

return true;

231

252

}

232

253

233

char **add_to_argv(char **argv, int *argc, char *arg){

234

if (argv == NULL){

235

*argc = 1;

236

argv = malloc(sizeof(char*) * 2);

237

if(argv == NULL){

238

return NULL;

254

/* Removes and free a plugin from the plugin list */

255

static void free_plugin(plugin *plugin_node){

256

257

for(char **arg = plugin_node->argv; *arg != NULL; arg++){

258

free(*arg);

259

}

260

free(plugin_node->argv);

261

for(char **env = plugin_node->environ; *env != NULL; env++){

262

free(*env);

263

}

264

free(plugin_node->environ);

265

free(plugin_node->buffer);

266

267

/* Removes the plugin from the singly-linked list */

268

if(plugin_node == plugin_list){

269

/* First one - simple */

270

plugin_list = plugin_list->next;

271

} else {

272

/* Second one or later */

273

for(plugin *p = plugin_list; p != NULL; p = p->next){

274

if(p->next == plugin_node){

275

p->next = plugin_node->next;

276

break;

277

}

239

278

}

240

argv[0] = NULL; /* Will be set to argv[0] in main before parsing */

241

argv[1] = NULL;

242

}

243

*argc += 1;

244

argv = realloc(argv, sizeof(char *)

245

* ((unsigned int) *argc + 1));

246

if(argv == NULL){

247

return NULL;

248

}

249

argv[*argc-1] = arg;

250

argv[*argc] = NULL;

251

return argv;

279

}

280

281

free(plugin_node);

252

282

}

253

283

254

static void free_plugin_list(plugin *plugin_list){

255

for(plugin *next = plugin_list; plugin_list != NULL; plugin_list = next){

256

next = plugin_list->next;

257

free(plugin_list->name);

258

for(char **arg = plugin_list->argv; *arg != NULL; arg++){

259

free(*arg);

260

}

261

free(plugin_list->argv);

262

for(char **env = plugin_list->environ; *env != NULL; env++){

263

free(*env);

264

}

265

free(plugin_list->environ);

266

free(plugin_list);

267

}

284

static void free_plugin_list(void){

285

while(plugin_list != NULL){

286

free_plugin(plugin_list);

287

}

268

288

}

269

289

270

290

int main(int argc, char *argv[]){

271

const char *plugindir = "/lib/mandos/plugins.d";

272

const char *argfile = ARGFILE;

291

char *plugindir = NULL;

292

char *argfile = NULL;

273

293

FILE *conffp;

274

294

size_t d_name_len;

275

295

DIR *dir = NULL;

298

318

ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);

299

319

if(ret == -1){

300

320

perror("sigaction");

301

exitstatus = EXIT_FAILURE;

321

exitstatus = EXIT_FAILURE;

302

322

goto fallback;

303

323

}

304

324

322

342

{ .name = "plugin-dir", .key = 128,

323

343

.arg = "DIRECTORY",

324

344

.doc = "Specify a different plugin directory", .group = 2 },

325

{ .name = "userid", .key = 129,

326

.arg = "ID", .flags = 0,

327

.doc = "User ID the plugins will run as", .group = 2 },

328

{ .name = "groupid", .key = 130,

329

.arg = "ID", .flags = 0,

330

.doc = "Group ID the plugins will run as", .group = 2 },

331

{ .name = "debug", .key = 131,

332

.doc = "Debug mode", .group = 3 },

345

{ .name = "config-file", .key = 129,

346

.arg = "FILE",

347

.doc = "Specify a different configuration file", .group = 2 },

348

{ .name = "userid", .key = 130,

349

.arg = "ID", .flags = 0,

350

.doc = "User ID the plugins will run as", .group = 3 },

351

{ .name = "groupid", .key = 131,

352

.arg = "ID", .flags = 0,

353

.doc = "Group ID the plugins will run as", .group = 3 },

354

{ .name = "debug", .key = 132,

355

.doc = "Debug mode", .group = 4 },

333

356

{ .name = NULL }

334

357

};

335

358

336

error_t parse_opt (int key, char *arg, struct argp_state *state) {

359

error_t parse_opt (int key, char *arg, __attribute__((unused))

360

struct argp_state *state) {

337

361

/* Get the INPUT argument from `argp_parse', which we know is a

338

362

pointer to our plugin list pointer. */

339

plugin **plugins = state->input;

340

363

switch (key) {

341

case 'g':

364

case 'g': /* --global-options */

342

365

if (arg != NULL){

343

366

char *p;

344

367

while((p = strsep(&arg, ",")) != NULL){

345

368

if(p[0] == '\0'){

346

369

continue;

347

370

}

348

if(not add_argument(getplugin(NULL, plugins), p)){

371

if(not add_argument(getplugin(NULL), p)){

349

372

perror("add_argument");

350

373

return ARGP_ERR_UNKNOWN;

351

374

}

352

375

}

353

376

}

354

377

break;

355

case 'e':

378

case 'e': /* --global-envs */

356

379

if(arg == NULL){

357

380

break;

358

381

}

361

384

if(envdef == NULL){

362

385

break;

363

386

}

364

if(not add_environment(getplugin(NULL, plugins), envdef)){

387

if(not add_environment(getplugin(NULL), envdef)){

365

388

perror("add_environment");

366

389

}

367

390

}

368

391

break;

369

case 'o':

392

case 'o': /* --options-for */

370

393

if (arg != NULL){

371

394

char *p_name = strsep(&arg, ":");

372

395

if(p_name[0] == '\0'){

382

405

if(p[0] == '\0'){

383

406

continue;

384

407

}

385

if(not add_argument(getplugin(p_name, plugins), p)){

408

if(not add_argument(getplugin(p_name), p)){

386

409

perror("add_argument");

387

410

return ARGP_ERR_UNKNOWN;

388

411

}

390

413

}

391

414

}

392

415

break;

393

case 'f':

416

case 'f': /* --envs-for */

394

417

if(arg == NULL){

395

418

break;

396

419

}

404

427

break;

405

428

}

406

429

envdef++;

407

if(not add_environment(getplugin(p_name, plugins), envdef)){

430

if(not add_environment(getplugin(p_name), envdef)){

408

431

perror("add_environment");

409

432

}

410

433

}

411

434

break;

412

case 'd':

435

case 'd': /* --disable */

413

436

if (arg != NULL){

414

plugin *p = getplugin(arg, plugins);

437

plugin *p = getplugin(arg);

415

438

if(p == NULL){

416

439

return ARGP_ERR_UNKNOWN;

417

440

}

418

441

p->disabled = true;

419

442

}

420

443

break;

421

case 128:

422

plugindir = arg;

444

case 128: /* --plugin-dir */

445

plugindir = strdup(arg);

446

if(plugindir == NULL){

447

perror("strdup");

448

}

423

449

break;

424

case 129:

450

case 129: /* --config-file */

451

argfile = strdup(arg);

452

if(argfile == NULL){

453

perror("strdup");

454

}

455

break;

456

case 130: /* --userid */

425

457

uid = (uid_t)strtol(arg, NULL, 10);

426

458

break;

427

case 130:

459

case 131: /* --groupid */

428

460

gid = (gid_t)strtol(arg, NULL, 10);

429

461

break;

430

case 131:

462

case 132: /* --debug */

431

463

debug = true;

432

464

break;

433

465

case ARGP_KEY_ARG:

441

473

return 0;

442

474

}

443

475

444

plugin *plugin_list = NULL;

445

446

476

struct argp argp = { .options = options, .parser = parse_opt,

447

477

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

448

478

.doc = "Mandos plugin runner -- Run plugins" };

449

479

450

ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);

480

ret = argp_parse (&argp, argc, argv, 0, 0, NULL);

451

481

if (ret == ARGP_ERR_UNKNOWN){

452

482

fprintf(stderr, "Unknown error while parsing arguments\n");

453

483

exitstatus = EXIT_FAILURE;

454

484

goto fallback;

455

485

}

456

486

457

conffp = fopen(argfile, "r");

487

/* Opens the configfile if aviable */

488

if (argfile == NULL){

489

conffp = fopen(AFILE, "r");

490

} else {

491

conffp = fopen(argfile, "r");

492

}

458

493

if(conffp != NULL){

459

494

char *org_line = NULL;

460

495

char *p, *arg, *new_arg, *line;

463

498

const char whitespace_delims[] = " \r\t\f\v\n";

464

499

const char comment_delim[] = "#";

465

500

501

custom_argc = 1;

502

custom_argv = malloc(sizeof(char*) * 2);

503

if(custom_argv == NULL){

504

perror("malloc");

505

exitstatus = EXIT_FAILURE;

506

goto fallback;

507

}

508

custom_argv[0] = argv[0];

509

custom_argv[1] = NULL;

510

511

/* for each line in the config file, strip whitespace and ignore

512

commented text */

466

513

while(true){

467

514

sret = getline(&org_line, &size, conffp);

468

515

if(sret == -1){

476

523

continue;

477

524

}

478

525

new_arg = strdup(p);

479

custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);

480

if (custom_argv == NULL){

481

perror("add_to_argv");

482

exitstatus = EXIT_FAILURE;

483

goto fallback;

484

}

526

if(new_arg == NULL){

527

perror("strdup");

528

exitstatus = EXIT_FAILURE;

529

free(org_line);

530

goto fallback;

531

}

532

533

custom_argc += 1;

534

custom_argv = realloc(custom_argv, sizeof(char *)

535

* ((unsigned int) custom_argc + 1));

536

if(custom_argv == NULL){

537

perror("realloc");

538

exitstatus = EXIT_FAILURE;

539

free(org_line);

540

goto fallback;

541

}

542

custom_argv[custom_argc-1] = new_arg;

543

custom_argv[custom_argc] = NULL;

485

544

}

486

545

}

487

546

free(org_line);

494

553

goto fallback;

495

554

}

496

555

}

497

556

/* If there was any arguments from configuration file,

557

pass them to parser as command arguments */

498

558

if(custom_argv != NULL){

499

custom_argv[0] = argv[0];

500

ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);

559

ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, NULL);

501

560

if (ret == ARGP_ERR_UNKNOWN){

502

561

fprintf(stderr, "Unknown error while parsing arguments\n");

503

562

exitstatus = EXIT_FAILURE;

518

577

}

519

578

}

520

579

}

521

580

581

/* Strip permissions down to nobody */

522

582

ret = setuid(uid);

523

583

if (ret == -1){

524

584

perror("setuid");

525

}

526

585

}

527

586

setgid(gid);

528

587

if (ret == -1){

529

588

perror("setgid");

530

589

}

590

591

if (plugindir == NULL){

592

dir = opendir(PDIR);

593

} else {

594

dir = opendir(plugindir);

595

}

531

596

532

dir = opendir(plugindir);

533

597

if(dir == NULL){

534

598

perror("Could not open plugin dir");

535

599

exitstatus = EXIT_FAILURE;

550

614

}

551

615

552

616

FD_ZERO(&rfds_all);

553

617

618

/* Read and execute any executable in the plugin directory*/

554

619

while(true){

555

620

dirst = readdir(dir);

556

621

587

652

break;

588

653

}

589

654

}

590

591

655

if(bad_name){

592

656

continue;

593

657

}

594

595

658

for(const char **suf = bad_suffixes; *suf != NULL; suf++){

596

659

size_t suf_len = strlen(*suf);

597

660

if((d_name_len >= suf_len)

624

687

free(filename);

625

688

continue;

626

689

}

627

690

691

/* Ignore non-executable files */

628

692

if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){

629

693

if(debug){

630

694

fprintf(stderr, "Ignoring plugin dir entry \"%s\""

633

697

free(filename);

634

698

continue;

635

699

}

636

plugin *p = getplugin(dirst->d_name, &plugin_list);

700

701

plugin *p = getplugin(dirst->d_name);

637

702

if(p == NULL){

638

703

perror("getplugin");

639

704

free(filename);

649

714

}

650

715

{

651

716

/* Add global arguments to argument list for this plugin */

652

plugin *g = getplugin(NULL, &plugin_list);

717

plugin *g = getplugin(NULL);

653

718

if(g != NULL){

654

719

for(char **a = g->argv + 1; *a != NULL; a++){

655

720

if(not add_argument(p, *a)){

680

745

}

681

746

}

682

747

683

int pipefd[2];

748

int pipefd[2];

684

749

ret = pipe(pipefd);

685

750

if (ret == -1){

686

751

perror("pipe");

687

752

exitstatus = EXIT_FAILURE;

688

753

goto fallback;

689

754

}

755

/* Ask OS to automatic close the pipe on exec */

690

756

ret = set_cloexec_flag(pipefd[0]);

691

757

if(ret < 0){

692

758

perror("set_cloexec_flag");

750

816

}

751

817

/* no return */

752

818

}

753

/* parent process */

819

/* Parent process */

820

close(pipefd[1]); /* Close unused write end of pipe */

754

821

free(filename);

755

close(pipefd[1]); /* close unused write end of pipe */

756

process *new_process = malloc(sizeof(process));

757

if (new_process == NULL){

758

perror("malloc");

822

plugin *new_plugin = getplugin(dirst->d_name);

823

if (new_plugin == NULL){

824

perror("getplugin");

759

825

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);

760

826

if(ret < 0){

761

perror("sigprocmask");

827

perror("sigprocmask");

762

828

}

763

829

exitstatus = EXIT_FAILURE;

764

830

goto fallback;

765

831

}

766

832

767

*new_process = (struct process){ .pid = pid,

768

.fd = pipefd[0],

769

.next = process_list };

770

// List handling

771

process_list = new_process;

833

new_plugin->pid = pid;

834

new_plugin->fd = pipefd[0];

835

772

836

/* Unblock SIGCHLD so signal handler can be run if this process

773

837

has already completed */

774

838

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);

778

842

goto fallback;

779

843

}

780

844

781

FD_SET(new_process->fd, &rfds_all);

845

FD_SET(new_plugin->fd, &rfds_all);

782

846

783

if (maxfd < new_process->fd){

784

maxfd = new_process->fd;

847

if (maxfd < new_plugin->fd){

848

maxfd = new_plugin->fd;

785

849

}

786

850

787

851

}

788

852

789

free_plugin_list(plugin_list);

790

791

853

closedir(dir);

792

854

dir = NULL;

793

794

if (process_list == NULL){

795

fprintf(stderr, "No plugin processes started. Incorrect plugin"

796

" directory?\n");

797

process_list = NULL;

855

856

for(plugin *p = plugin_list; p != NULL; p = p->next){

857

if(p->pid != 0){

858

break;

859

}

860

if(p->next == NULL){

861

fprintf(stderr, "No plugin processes started. Incorrect plugin"

862

" directory?\n");

863

free_plugin_list();

864

}

798

865

}

799

while(process_list){

866

867

/* Main loop while running plugins exist */

868

while(plugin_list){

800

869

fd_set rfds = rfds_all;

801

870

int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);

802

871

if (select_ret == -1){

806

875

}

807

876

/* OK, now either a process completed, or something can be read

808

877

from one of them */

809

for(process *proc = process_list; proc ; proc = proc->next){

878

for(plugin *proc = plugin_list; proc != NULL; proc = proc->next){

810

879

/* Is this process completely done? */

811

880

if(proc->eof and proc->completed){

812

881

/* Only accept the plugin output if it exited cleanly */

813

882

if(not WIFEXITED(proc->status)

814

883

or WEXITSTATUS(proc->status) != 0){

815

884

/* Bad exit by plugin */

885

816

886

if(debug){

817

887

if(WIFEXITED(proc->status)){

818

888

fprintf(stderr, "Plugin %u exited with status %d\n",

827

897

(unsigned int) (proc->pid));

828

898

}

829

899

}

900

830

901

/* Remove the plugin */

831

902

FD_CLR(proc->fd, &rfds_all);

903

832

904

/* Block signal while modifying process_list */

833

ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);

905

ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);

834

906

if(ret < 0){

835

907

perror("sigprocmask");

836

908

exitstatus = EXIT_FAILURE;

837

909

goto fallback;

838

910

}

839

/* Delete this process entry from the list */

840

if(process_list == proc){

841

/* First one - simple */

842

process_list = proc->next;

843

} else {

844

/* Second one or later */

845

for(process *p = process_list; p != NULL; p = p->next){

846

if(p->next == proc){

847

p->next = proc->next;

848

break;

849

}

850

}

851

}

911

free_plugin(proc);

852

912

/* We are done modifying process list, so unblock signal */

853

913

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

854

914

NULL);

855

915

if(ret < 0){

856

916

perror("sigprocmask");

857

}

858

free(proc->buffer);

859

free(proc);

860

/* We deleted this process from the list, so we can't go

861

proc->next. Therefore, start over from the beginning of

862

the process list */

863

break;

917

exitstatus = EXIT_FAILURE;

918

goto fallback;

919

}

920

921

if(plugin_list == NULL){

922

break;

923

}

924

continue;

864

925

}

926

865

927

/* This process exited nicely, so print its buffer */

866

928

867

bool bret = print_out_password(proc->buffer, proc->buffer_length);

929

bool bret = print_out_password(proc->buffer,

930

proc->buffer_length);

868

931

if(not bret){

869

932

perror("print_out_password");

870

933

exitstatus = EXIT_FAILURE;

871

934

}

872

935

goto fallback;

873

936

}

937

874

938

/* This process has not completed. Does it have any output? */

875

939

if(proc->eof or not FD_ISSET(proc->fd, &rfds)){

876

940

/* This process had nothing to say at this time */

906

970

907

971

fallback:

908

972

909

if(process_list == NULL or exitstatus != EXIT_SUCCESS){

910

/* Fallback if all plugins failed, none are found or an error occured */

973

if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){

974

/* Fallback if all plugins failed, none are found or an error

975

occured */

911

976

bool bret;

912

977

fprintf(stderr, "Going to fallback mode using getpass(3)\n");

913

978

char *passwordbuffer = getpass("Password: ");

926

991

}

927

992

928

993

if(custom_argv != NULL){

929

for(char **arg = custom_argv; *arg != NULL; arg++){

994

for(char **arg = custom_argv+1; *arg != NULL; arg++){

930

995

free(*arg);

931

996

}

932

997

free(custom_argv);

933

998

}

934

free_plugin_list(plugin_list);

935

999

936

1000

if(dir != NULL){

937

1001

closedir(dir);

938

1002

}

939

1003

940

1004

/* Free the process list and kill the processes */

941

for(process *next; process_list != NULL; process_list = next){

942

next = process_list->next;

943

close(process_list->fd);

944

ret = kill(process_list->pid, SIGTERM);

945

if(ret == -1 and errno != ESRCH){

946

/* set-uid proccesses migth not get closed */

947

perror("kill");

1005

for(plugin *p = plugin_list; p != NULL; p = p->next){

1006

if(p->pid != 0){

1007

close(p->fd);

1008

ret = kill(p->pid, SIGTERM);

1009

if(ret == -1 and errno != ESRCH){

1010

/* Set-uid proccesses might not get closed */

1011

perror("kill");

1012

}

948

1013

}

949

free(process_list->buffer);

950

free(process_list);

951

1014

}

952

1015

953

1016

/* Wait for any remaining child processes to terminate */

957

1020

if(errno != ECHILD){

958

1021

perror("wait");

959

1022

}

1023

1024

free_plugin_list();

1025

1026

free(plugindir);

1027

free(argfile);

960

1028

961

1029

return exitstatus;

962

1030

}