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- Committer: Teddy Hogeborn
- Date: 2009-01-04 21:26:57 UTC
- Revision ID: teddy@fukt.bsnet.se-20090104212657-cl3kz35co2v3g3eo
* mandos (MandosServer.Quit): New.
- files added:
- debian/mandos-client.config
- files removed:
- debian/watch
- files renamed:
- mandos-ctl => mandos-list
- files modified:
- INSTALL
added
removed
plugin-runner.c
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
5
* Copyright © 2008 Teddy Hogeborn
6
* Copyright © 2008 Björn Påhlsson
7
7
*
8
8
* This program is free software: you can redistribute it and/or
9
9
* modify it under the terms of the GNU General Public License as
38
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
39
FD_SET(), FD_ISSET(), FD_CLR */
40
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS(), WTERMSIG(),
42
WCOREDUMP() */
41
WEXITSTATUS() */
43
42
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
43
#include <iso646.h> /* and, or, not */
45
44
#include <dirent.h> /* DIR, struct dirent, opendir(),
53
52
close() */
54
53
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
54
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
55
#include <string.h> /* strsep, strlen(), asprintf() */
58
56
#include <errno.h> /* errno */
59
57
#include <argp.h> /* struct argp_option, struct
60
58
argp_state, struct argp,
64
62
#include <signal.h> /* struct sigaction, sigemptyset(),
65
63
sigaddset(), sigaction(),
66
64
sigprocmask(), SIG_BLOCK, SIGCHLD,
67
SIG_UNBLOCK, kill(), sig_atomic_t
68
*/
65
SIG_UNBLOCK, kill() */
69
66
#include <errno.h> /* errno, EBADF */
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
71
67
72
68
#define BUFFER_SIZE 256
73
69
84
80
char **environ;
85
81
int envc;
86
82
bool disabled;
87
83
88
84
/* Variables used for running processes*/
89
85
pid_t pid;
90
86
int fd;
92
88
size_t buffer_size;
93
89
size_t buffer_length;
94
90
bool eof;
95
volatile sig_atomic_t completed;
96
int status;
91
volatile bool completed;
92
volatile int status;
97
93
struct plugin *next;
98
94
} plugin;
99
95
103
99
or if none is found, creates a new one */
104
100
static plugin *getplugin(char *name){
105
101
/* Check for exiting plugin with that name */
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
107
if((p->name == name)
108
or (p->name and name and (strcmp(p->name, name) == 0))){
102
for (plugin *p = plugin_list; p != NULL; p = p->next){
103
if ((p->name == name)
104
or (p->name and name and (strcmp(p->name, name) == 0))){
109
105
return p;
110
106
}
111
107
}
112
108
/* Create a new plugin */
113
plugin *new_plugin = NULL;
114
do {
115
new_plugin = malloc(sizeof(plugin));
116
} while(new_plugin == NULL and errno == EINTR);
117
if(new_plugin == NULL){
109
plugin *new_plugin = malloc(sizeof(plugin));
110
if (new_plugin == NULL){
118
111
return NULL;
119
112
}
120
113
char *copy_name = NULL;
121
114
if(name != NULL){
122
do {
123
copy_name = strdup(name);
124
} while(copy_name == NULL and errno == EINTR);
115
copy_name = strdup(name);
125
116
if(copy_name == NULL){
126
free(new_plugin);
127
117
return NULL;
128
118
}
129
119
}
130
120
131
*new_plugin = (plugin){ .name = copy_name,
132
.argc = 1,
133
.disabled = false,
134
.next = plugin_list };
121
*new_plugin = (plugin) { .name = copy_name,
122
.argc = 1,
123
.disabled = false,
124
.next = plugin_list };
135
125
136
do {
137
new_plugin->argv = malloc(sizeof(char *) * 2);
138
} while(new_plugin->argv == NULL and errno == EINTR);
139
if(new_plugin->argv == NULL){
126
new_plugin->argv = malloc(sizeof(char *) * 2);
127
if (new_plugin->argv == NULL){
140
128
free(copy_name);
141
129
free(new_plugin);
142
130
return NULL;
144
132
new_plugin->argv[0] = copy_name;
145
133
new_plugin->argv[1] = NULL;
146
134
147
do {
148
new_plugin->environ = malloc(sizeof(char *));
149
} while(new_plugin->environ == NULL and errno == EINTR);
135
new_plugin->environ = malloc(sizeof(char *));
150
136
if(new_plugin->environ == NULL){
151
137
free(copy_name);
152
138
free(new_plugin->argv);
164
150
static bool add_to_char_array(const char *new, char ***array,
165
151
int *len){
166
152
/* Resize the pointed-to array to hold one more pointer */
167
do {
168
*array = realloc(*array, sizeof(char *)
169
* (size_t) ((*len) + 2));
170
} while(*array == NULL and errno == EINTR);
153
*array = realloc(*array, sizeof(char *)
154
* (size_t) ((*len) + 2));
171
155
/* Malloc check */
172
156
if(*array == NULL){
173
157
return false;
174
158
}
175
159
/* Make a copy of the new string */
176
char *copy;
177
do {
178
copy = strdup(new);
179
} while(copy == NULL and errno == EINTR);
160
char *copy = strdup(new);
180
161
if(copy == NULL){
181
162
return false;
182
163
}
208
189
if(strncmp(*e, def, namelen + 1) == 0){
209
190
/* It already exists */
210
191
if(replace){
211
char *new;
212
do {
213
new = realloc(*e, strlen(def) + 1);
214
} while(new == NULL and errno == EINTR);
192
char *new = realloc(*e, strlen(def) + 1);
215
193
if(new == NULL){
216
194
return false;
217
195
}
227
205
/*
228
206
* Based on the example in the GNU LibC manual chapter 13.13 "File
229
207
* Descriptor Flags".
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
208
* *Note File Descriptor Flags:(libc)Descriptor Flags.
231
209
*/
232
210
static int set_cloexec_flag(int fd){
233
int ret = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
211
int ret = fcntl(fd, F_GETFD, 0);
234
212
/* If reading the flags failed, return error indication now. */
235
213
if(ret < 0){
236
214
return ret;
237
215
}
238
216
/* Store modified flag word in the descriptor. */
239
return TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD, ret | FD_CLOEXEC));
217
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
240
218
}
241
219
242
220
243
221
/* Mark processes as completed when they exit, and save their exit
244
222
status. */
245
223
static void handle_sigchld(__attribute__((unused)) int sig){
246
int old_errno = errno;
247
224
while(true){
248
225
plugin *proc = plugin_list;
249
226
int status;
253
230
break;
254
231
}
255
232
if(pid == -1){
256
if(errno == ECHILD){
257
/* No child processes */
258
break;
233
if (errno != ECHILD){
234
perror("waitpid");
259
235
}
260
perror("waitpid");
236
/* No child processes */
237
break;
261
238
}
262
239
263
240
/* A child exited, find it in process_list */
269
246
continue;
270
247
}
271
248
proc->status = status;
272
proc->completed = 1;
249
proc->completed = true;
273
250
}
274
errno = old_errno;
275
251
}
276
252
277
253
/* Prints out a password to stdout */
299
275
}
300
276
free(plugin_node->environ);
301
277
free(plugin_node->buffer);
302
278
303
279
/* Removes the plugin from the singly-linked list */
304
280
if(plugin_node == plugin_list){
305
281
/* First one - simple */
333
309
struct stat st;
334
310
fd_set rfds_all;
335
311
int ret, maxfd = 0;
336
ssize_t sret;
337
312
uid_t uid = 65534;
338
313
gid_t gid = 65534;
339
314
bool debug = false;
396
371
{ .name = NULL }
397
372
};
398
373
399
error_t parse_opt(int key, char *arg, __attribute__((unused))
400
struct argp_state *state){
401
switch(key){
402
char *tmp;
403
intmax_t tmpmax;
374
error_t parse_opt (int key, char *arg, __attribute__((unused))
375
struct argp_state *state) {
376
switch (key) {
404
377
case 'g': /* --global-options */
405
if(arg != NULL){
406
char *plugin_option;
407
while((plugin_option = strsep(&arg, ",")) != NULL){
408
if(plugin_option[0] == '\0'){
378
if (arg != NULL){
379
char *p;
380
while((p = strsep(&arg, ",")) != NULL){
381
if(p[0] == '\0'){
409
382
continue;
410
383
}
411
if(not add_argument(getplugin(NULL), plugin_option)){
384
if(not add_argument(getplugin(NULL), p)){
412
385
perror("add_argument");
413
386
return ARGP_ERR_UNKNOWN;
414
387
}
424
397
}
425
398
break;
426
399
case 'o': /* --options-for */
427
if(arg != NULL){
428
char *plugin_name = strsep(&arg, ":");
429
if(plugin_name[0] == '\0'){
430
break;
431
}
432
char *plugin_option;
433
while((plugin_option = strsep(&arg, ",")) != NULL){
434
if(not add_argument(getplugin(plugin_name), plugin_option)){
400
if (arg != NULL){
401
char *p_name = strsep(&arg, ":");
402
if(p_name[0] == '\0' or arg == NULL){
403
break;
404
}
405
char *opt = strsep(&arg, ":");
406
if(opt[0] == '\0' or opt == NULL){
407
break;
408
}
409
char *p;
410
while((p = strsep(&opt, ",")) != NULL){
411
if(p[0] == '\0'){
412
continue;
413
}
414
if(not add_argument(getplugin(p_name), p)){
435
415
perror("add_argument");
436
416
return ARGP_ERR_UNKNOWN;
437
417
}
454
434
}
455
435
break;
456
436
case 'd': /* --disable */
457
if(arg != NULL){
437
if (arg != NULL){
458
438
plugin *p = getplugin(arg);
459
439
if(p == NULL){
460
440
return ARGP_ERR_UNKNOWN;
463
443
}
464
444
break;
465
445
case 'e': /* --enable */
466
if(arg != NULL){
446
if (arg != NULL){
467
447
plugin *p = getplugin(arg);
468
448
if(p == NULL){
469
449
return ARGP_ERR_UNKNOWN;
476
456
plugindir = strdup(arg);
477
457
if(plugindir == NULL){
478
458
perror("strdup");
479
}
459
}
480
460
break;
481
461
case 129: /* --config-file */
482
462
/* This is already done by parse_opt_config_file() */
483
463
break;
484
464
case 130: /* --userid */
485
errno = 0;
486
tmpmax = strtoimax(arg, &tmp, 10);
487
if(errno != 0 or tmp == arg or *tmp != '\0'
488
or tmpmax != (uid_t)tmpmax){
489
fprintf(stderr, "Bad user ID number: \"%s\", using %"
490
PRIdMAX "\n", arg, (intmax_t)uid);
491
} else {
492
uid = (uid_t)tmpmax;
493
}
465
uid = (uid_t)strtol(arg, NULL, 10);
494
466
break;
495
467
case 131: /* --groupid */
496
errno = 0;
497
tmpmax = strtoimax(arg, &tmp, 10);
498
if(errno != 0 or tmp == arg or *tmp != '\0'
499
or tmpmax != (gid_t)tmpmax){
500
fprintf(stderr, "Bad group ID number: \"%s\", using %"
501
PRIdMAX "\n", arg, (intmax_t)gid);
502
} else {
503
gid = (gid_t)tmpmax;
504
}
468
gid = (gid_t)strtol(arg, NULL, 10);
505
469
break;
506
470
case 132: /* --debug */
507
471
debug = true;
508
472
break;
509
/*
510
* When adding more options before this line, remember to also add a
511
* "case" to the "parse_opt_config_file" function below.
512
*/
513
473
case ARGP_KEY_ARG:
514
474
/* Cryptsetup always passes an argument, which is an empty
515
475
string if "none" was specified in /etc/crypttab. So if
528
488
529
489
/* This option parser is the same as parse_opt() above, except it
530
490
ignores everything but the --config-file option. */
531
error_t parse_opt_config_file(int key, char *arg,
532
__attribute__((unused))
533
struct argp_state *state){
534
switch(key){
491
error_t parse_opt_config_file (int key, char *arg,
492
__attribute__((unused))
493
struct argp_state *state) {
494
switch (key) {
535
495
case 'g': /* --global-options */
536
496
case 'G': /* --global-env */
537
497
case 'o': /* --options-for */
546
506
if(argfile == NULL){
547
507
perror("strdup");
548
508
}
549
break;
509
break;
550
510
case 130: /* --userid */
551
511
case 131: /* --groupid */
552
512
case 132: /* --debug */
564
524
.args_doc = "",
565
525
.doc = "Mandos plugin runner -- Run plugins" };
566
526
567
/* Parse using parse_opt_config_file() in order to get the custom
527
/* Parse using the parse_opt_config_file in order to get the custom
568
528
config file location, if any. */
569
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
570
if(ret == ARGP_ERR_UNKNOWN){
529
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
530
if (ret == ARGP_ERR_UNKNOWN){
571
531
fprintf(stderr, "Unknown error while parsing arguments\n");
572
532
exitstatus = EXIT_FAILURE;
573
533
goto fallback;
577
537
argp.parser = parse_opt;
578
538
579
539
/* Open the configfile if available */
580
if(argfile == NULL){
540
if (argfile == NULL){
581
541
conffp = fopen(AFILE, "r");
582
542
} else {
583
543
conffp = fopen(argfile, "r");
584
}
544
}
585
545
if(conffp != NULL){
586
546
char *org_line = NULL;
587
547
char *p, *arg, *new_arg, *line;
588
548
size_t size = 0;
549
ssize_t sret;
589
550
const char whitespace_delims[] = " \r\t\f\v\n";
590
551
const char comment_delim[] = "#";
591
552
592
553
custom_argc = 1;
593
554
custom_argv = malloc(sizeof(char*) * 2);
594
555
if(custom_argv == NULL){
598
559
}
599
560
custom_argv[0] = argv[0];
600
561
custom_argv[1] = NULL;
601
562
602
563
/* for each line in the config file, strip whitespace and ignore
603
564
commented text */
604
565
while(true){
606
567
if(sret == -1){
607
568
break;
608
569
}
609
570
610
571
line = org_line;
611
572
arg = strsep(&line, comment_delim);
612
573
while((p = strsep(&arg, whitespace_delims)) != NULL){
631
592
goto fallback;
632
593
}
633
594
custom_argv[custom_argc-1] = new_arg;
634
custom_argv[custom_argc] = NULL;
595
custom_argv[custom_argc] = NULL;
635
596
}
636
597
}
637
do {
638
ret = fclose(conffp);
639
} while(ret == EOF and errno == EINTR);
640
if(ret == EOF){
641
perror("fclose");
642
exitstatus = EXIT_FAILURE;
643
goto fallback;
644
}
645
598
free(org_line);
646
599
} else {
647
600
/* Check for harmful errors and go to fallback. Other errors might
648
601
not affect opening plugins */
649
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
602
if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
650
603
perror("fopen");
651
604
exitstatus = EXIT_FAILURE;
652
605
goto fallback;
655
608
/* If there was any arguments from configuration file,
656
609
pass them to parser as command arguments */
657
610
if(custom_argv != NULL){
658
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
659
0, NULL);
660
if(ret == ARGP_ERR_UNKNOWN){
611
ret = argp_parse (&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
612
0, NULL);
613
if (ret == ARGP_ERR_UNKNOWN){
661
614
fprintf(stderr, "Unknown error while parsing arguments\n");
662
615
exitstatus = EXIT_FAILURE;
663
616
goto fallback;
666
619
667
620
/* Parse actual command line arguments, to let them override the
668
621
config file */
669
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
670
if(ret == ARGP_ERR_UNKNOWN){
622
ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
623
if (ret == ARGP_ERR_UNKNOWN){
671
624
fprintf(stderr, "Unknown error while parsing arguments\n");
672
625
exitstatus = EXIT_FAILURE;
673
626
goto fallback;
680
633
for(char **a = p->argv; *a != NULL; a++){
681
634
fprintf(stderr, "\tArg: %s\n", *a);
682
635
}
683
fprintf(stderr, "...and %d environment variables\n", p->envc);
636
fprintf(stderr, "...and %u environment variables\n", p->envc);
684
637
for(char **a = p->environ; *a != NULL; a++){
685
638
fprintf(stderr, "\t%s\n", *a);
686
639
}
688
641
}
689
642
690
643
/* Strip permissions down to nobody */
644
ret = setuid(uid);
645
if (ret == -1){
646
perror("setuid");
647
}
691
648
setgid(gid);
692
if(ret == -1){
649
if (ret == -1){
693
650
perror("setgid");
694
651
}
695
ret = setuid(uid);
696
if(ret == -1){
697
perror("setuid");
698
}
699
652
700
if(plugindir == NULL){
653
if (plugindir == NULL){
701
654
dir = opendir(PDIR);
702
655
} else {
703
656
dir = opendir(plugindir);
726
679
727
680
/* Read and execute any executable in the plugin directory*/
728
681
while(true){
729
do {
730
dirst = readdir(dir);
731
} while(dirst == NULL and errno == EINTR);
682
dirst = readdir(dir);
732
683
733
684
/* All directory entries have been processed */
734
685
if(dirst == NULL){
735
if(errno == EBADF){
686
if (errno == EBADF){
736
687
perror("readdir");
737
688
exitstatus = EXIT_FAILURE;
738
689
goto fallback;
785
736
continue;
786
737
}
787
738
}
788
739
789
740
char *filename;
790
741
if(plugindir == NULL){
791
ret = TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
792
dirst->d_name));
742
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
793
743
} else {
794
ret = TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s", plugindir,
795
dirst->d_name));
744
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
796
745
}
797
746
if(ret < 0){
798
747
perror("asprintf");
799
748
continue;
800
749
}
801
750
802
ret = TEMP_FAILURE_RETRY(stat(filename, &st));
803
if(ret == -1){
751
ret = stat(filename, &st);
752
if (ret == -1){
804
753
perror("stat");
805
754
free(filename);
806
755
continue;
807
756
}
808
757
809
758
/* Ignore non-executable files */
810
if(not S_ISREG(st.st_mode)
811
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
759
if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
812
760
if(debug){
813
761
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
814
762
" with bad type or mode\n", filename);
860
808
}
861
809
862
810
int pipefd[2];
863
ret = TEMP_FAILURE_RETRY(pipe(pipefd));
864
if(ret == -1){
811
ret = pipe(pipefd);
812
if (ret == -1){
865
813
perror("pipe");
866
814
exitstatus = EXIT_FAILURE;
867
815
goto fallback;
880
828
goto fallback;
881
829
}
882
830
/* Block SIGCHLD until process is safely in process list */
883
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
884
&sigchld_action.sa_mask,
885
NULL));
831
ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
886
832
if(ret < 0){
887
833
perror("sigprocmask");
888
834
exitstatus = EXIT_FAILURE;
889
835
goto fallback;
890
836
}
891
837
/* Starting a new process to be watched */
892
pid_t pid;
893
do {
894
pid = fork();
895
} while(pid == -1 and errno == EINTR);
838
pid_t pid = fork();
896
839
if(pid == -1){
897
840
perror("fork");
898
841
exitstatus = EXIT_FAILURE;
936
879
/* no return */
937
880
}
938
881
/* Parent process */
939
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
940
pipe */
882
close(pipefd[1]); /* Close unused write end of pipe */
941
883
free(filename);
942
884
plugin *new_plugin = getplugin(dirst->d_name);
943
if(new_plugin == NULL){
885
if (new_plugin == NULL){
944
886
perror("getplugin");
945
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
946
&sigchld_action.sa_mask,
947
NULL));
887
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
948
888
if(ret < 0){
949
889
perror("sigprocmask");
950
890
}
957
897
958
898
/* Unblock SIGCHLD so signal handler can be run if this process
959
899
has already completed */
960
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
961
&sigchld_action.sa_mask,
962
NULL));
900
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
963
901
if(ret < 0){
964
902
perror("sigprocmask");
965
903
exitstatus = EXIT_FAILURE;
968
906
969
907
FD_SET(new_plugin->fd, &rfds_all);
970
908
971
if(maxfd < new_plugin->fd){
909
if (maxfd < new_plugin->fd){
972
910
maxfd = new_plugin->fd;
973
911
}
974
912
}
975
913
976
TEMP_FAILURE_RETRY(closedir(dir));
914
closedir(dir);
977
915
dir = NULL;
978
free_plugin(getplugin(NULL));
979
916
980
917
for(plugin *p = plugin_list; p != NULL; p = p->next){
981
918
if(p->pid != 0){
992
929
while(plugin_list){
993
930
fd_set rfds = rfds_all;
994
931
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
995
if(select_ret == -1 and errno != EINTR){
932
if (select_ret == -1){
996
933
perror("select");
997
934
exitstatus = EXIT_FAILURE;
998
935
goto fallback;
1001
938
from one of them */
1002
939
for(plugin *proc = plugin_list; proc != NULL;){
1003
940
/* Is this process completely done? */
1004
if(proc->completed and proc->eof){
941
if(proc->eof and proc->completed){
1005
942
/* Only accept the plugin output if it exited cleanly */
1006
943
if(not WIFEXITED(proc->status)
1007
944
or WEXITSTATUS(proc->status) != 0){
1008
945
/* Bad exit by plugin */
1009
946
1010
947
if(debug){
1011
948
if(WIFEXITED(proc->status)){
1012
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1013
" status %d\n", proc->name,
1014
(intmax_t) (proc->pid),
949
fprintf(stderr, "Plugin %u exited with status %d\n",
950
(unsigned int) (proc->pid),
1015
951
WEXITSTATUS(proc->status));
1016
} else if(WIFSIGNALED(proc->status)){
1017
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1018
" signal %d: %s\n", proc->name,
1019
(intmax_t) (proc->pid),
1020
WTERMSIG(proc->status),
1021
strsignal(WTERMSIG(proc->status)));
952
} else if(WIFSIGNALED(proc->status)) {
953
fprintf(stderr, "Plugin %u killed by signal %d\n",
954
(unsigned int) (proc->pid),
955
WTERMSIG(proc->status));
1022
956
} else if(WCOREDUMP(proc->status)){
1023
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1024
" core\n", proc->name, (intmax_t) (proc->pid));
957
fprintf(stderr, "Plugin %d dumped core\n",
958
(unsigned int) (proc->pid));
1025
959
}
1026
960
}
1027
961
1028
962
/* Remove the plugin */
1029
963
FD_CLR(proc->fd, &rfds_all);
1030
964
1031
965
/* Block signal while modifying process_list */
1032
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1033
&sigchld_action.sa_mask,
1034
NULL));
966
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1035
967
if(ret < 0){
1036
968
perror("sigprocmask");
1037
969
exitstatus = EXIT_FAILURE;
1043
975
proc = next_plugin;
1044
976
1045
977
/* We are done modifying process list, so unblock signal */
1046
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1047
&sigchld_action.sa_mask,
1048
NULL));
978
ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
979
NULL);
1049
980
if(ret < 0){
1050
981
perror("sigprocmask");
1051
982
exitstatus = EXIT_FAILURE;
1080
1011
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1081
1012
proc->buffer = realloc(proc->buffer, proc->buffer_size
1082
1013
+ (size_t) BUFFER_SIZE);
1083
if(proc->buffer == NULL){
1014
if (proc->buffer == NULL){
1084
1015
perror("malloc");
1085
1016
exitstatus = EXIT_FAILURE;
1086
1017
goto fallback;
1088
1019
proc->buffer_size += BUFFER_SIZE;
1089
1020
}
1090
1021
/* Read from the process */
1091
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1092
proc->buffer
1093
+ proc->buffer_length,
1094
BUFFER_SIZE));
1095
if(sret < 0){
1022
ret = read(proc->fd, proc->buffer + proc->buffer_length,
1023
BUFFER_SIZE);
1024
if(ret < 0){
1096
1025
/* Read error from this process; ignore the error */
1097
1026
proc = proc->next;
1098
1027
continue;
1099
1028
}
1100
if(sret == 0){
1029
if(ret == 0){
1101
1030
/* got EOF */
1102
1031
proc->eof = true;
1103
1032
} else {
1104
proc->buffer_length += (size_t) sret;
1033
proc->buffer_length += (size_t) ret;
1105
1034
}
1106
1035
}
1107
1036
}
1108
1109
1037
1038
1110
1039
fallback:
1111
1040
1112
1041
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1159
1088
}
1160
1089
1161
1090
/* Wait for any remaining child processes to terminate */
1162
do {
1091
do{
1163
1092
ret = wait(NULL);
1164
1093
} while(ret >= 0);
1165
1094
if(errno != ECHILD){
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0