/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk

« back to all changes in this revision

Viewing changes to plugins.d/plymouth.c

  • Committer: Teddy Hogeborn
  • Date: 2024-09-11 22:44:07 UTC
  • Revision ID: teddy@recompile.se-20240911224407-vv54nya8wo9eedxx
Hide warnings if --no-warn-execstack is not supported

* Makefile: When testing if "-Xlinker --no-warn-execstack" can be
  used by the C compiler, hide any error output.

Show diffs side-by-side

added added

removed removed

Lines of Context:
plugins.d/plymouth.c
2
2
/*
3
3
 * Plymouth - Read a password from Plymouth and output it
4
4
 * 
5
 
 * Copyright © 2010-2019 Teddy Hogeborn
6
 
 * Copyright © 2010-2019 Björn Påhlsson
 
5
 * Copyright © 2010-2022 Teddy Hogeborn
 
6
 * Copyright © 2010-2022 Björn Påhlsson
7
7
 * 
8
8
 * This file is part of Mandos.
9
9
 * 
23
23
 * Contact the authors at <mandos@recompile.se>.
24
24
 */
25
25
 
26
 
#define _GNU_SOURCE             /* asprintf(), TEMP_FAILURE_RETRY() */
27
 
#include <signal.h>             /* sig_atomic_t, struct sigaction,
28
 
                                   sigemptyset(), sigaddset(), SIGINT,
29
 
                                   SIGHUP, SIGTERM, sigaction(),
30
 
                                   kill(), SIG_IGN */
 
26
#define _GNU_SOURCE             /* program_invocation_short_name,
 
27
                                   vasprintf(), asprintf(),
 
28
                                   TEMP_FAILURE_RETRY() */
 
29
#include <sys/types.h>          /* sig_atomic_t, pid_t, setuid(),
 
30
                                   geteuid(), setsid() */
 
31
#include <argp.h>               /* argp_program_version,
 
32
                                   argp_program_bug_address,
 
33
                                   struct argp_option,
 
34
                                   struct argp_state,
 
35
                                   ARGP_ERR_UNKNOWN, struct argp,
 
36
                                   argp_parse(), ARGP_IN_ORDER */
 
37
#include <stddef.h>             /* NULL, size_t */
31
38
#include <stdbool.h>            /* bool, false, true */
 
39
#include <stdio.h>              /* FILE, fprintf(), vfprintf(),
 
40
                                   vasprintf(), stderr, asprintf(),
 
41
                                   fopen(), fscanf(), fclose(),
 
42
                                   sscanf() */
 
43
#include <stdarg.h>             /* va_list, va_start(), vfprintf() */
 
44
#include <errno.h>              /* program_invocation_short_name,
 
45
                                   errno, ENOMEM, EINTR, ENOENT,
 
46
                                   error_t, EINVAL */
 
47
#include <string.h>             /* strerror(), strdup(), memcmp() */
 
48
#include <error.h>              /* error() */
 
49
#include <stdlib.h>             /* free(), getenv(), malloc(),
 
50
                                   reallocarray(), realloc(),
 
51
                                   EXIT_FAILURE, EXIT_SUCCESS */
 
52
#include <unistd.h>             /* TEMP_FAILURE_RETRY(), setuid(),
 
53
                                   geteuid(), setsid(), chdir(),
 
54
                                   dup2(), STDERR_FILENO,
 
55
                                   STDOUT_FILENO, fork(), _exit(),
 
56
                                   execv(), ssize_t, readlink(),
 
57
                                   close(), read(), access(), X_OK */
 
58
#include <signal.h>             /* kill(), SIGTERM, struct sigaction,
 
59
                                   sigemptyset(), SIGINT, SIGHUP,
 
60
                                   sigaddset(), SIG_IGN */
 
61
#include <sys/wait.h>           /* waitpid(), WIFEXITED(),
 
62
                                   WEXITSTATUS(), WIFSIGNALED(),
 
63
                                   WTERMSIG() */
 
64
#include <iso646.h>             /* not, and, or */
 
65
#include <sysexits.h>           /* EX_OSERR, EX_USAGE,
 
66
                                   EX_UNAVAILABLE */
 
67
#include <stdint.h>             /* SIZE_MAX */
 
68
#include <dirent.h>             /* struct dirent, scandir(),
 
69
                                   alphasort() */
 
70
#include <inttypes.h>           /* uintmax_t, strtoumax(), SCNuMAX,
 
71
                                   PRIuMAX */
 
72
#include <sys/stat.h>           /* struct stat, lstat(), S_ISLNK() */
32
73
#include <fcntl.h>              /* open(), O_RDONLY */
33
 
#include <iso646.h>             /* and, or, not*/
34
 
#include <sys/types.h>          /* size_t, ssize_t, pid_t, struct
35
 
                                   dirent, waitpid() */
36
 
#include <sys/wait.h>           /* waitpid() */
37
 
#include <stddef.h>             /* NULL */
38
 
#include <string.h>             /* strchr(), memcmp() */
39
 
#include <stdio.h>              /* asprintf(), perror(), fopen(),
40
 
                                   fscanf(), vasprintf(), fprintf(),
41
 
                                   vfprintf() */
42
 
#include <unistd.h>             /* close(), readlink(), read(),
43
 
                                   fork(), setsid(), chdir(), dup2(),
44
 
                                   STDERR_FILENO, execv(), access() */
45
 
#include <stdlib.h>             /* free(), EXIT_FAILURE, realloc(),
46
 
                                   EXIT_SUCCESS, malloc(), _exit(),
47
 
                                   getenv() */
48
 
#include <dirent.h>             /* scandir(), alphasort() */
49
 
#include <inttypes.h>           /* intmax_t, strtoumax(), SCNuMAX */
50
 
#include <sys/stat.h>           /* struct stat, lstat() */
51
 
#include <sysexits.h>           /* EX_OSERR, EX_UNAVAILABLE */
52
 
#include <error.h>              /* error() */
53
 
#include <errno.h>              /* TEMP_FAILURE_RETRY */
54
74
#include <argz.h>               /* argz_count(), argz_extract() */
55
 
#include <stdarg.h>             /* va_list, va_start(), ... */
56
 
#include <argp.h>
57
75
 
58
76
sig_atomic_t interrupted_by_signal = 0;
59
77
const char *argp_program_version = "plymouth " VERSION;
204
222
    char **tmp;
205
223
    int i = 0;
206
224
    for (; argv[i] != NULL; i++){
207
 
      tmp = realloc(new_argv, sizeof(const char *) * ((size_t)i + 2));
 
225
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
 
226
      tmp = reallocarray(new_argv, ((size_t)i + 2),
 
227
                         sizeof(const char *));
 
228
#else
 
229
      if(((size_t)i + 2) > (SIZE_MAX / sizeof(const char *))){
 
230
        /* overflow */
 
231
        tmp = NULL;
 
232
        errno = ENOMEM;
 
233
      } else {
 
234
        tmp = realloc(new_argv, ((size_t)i + 2) * sizeof(const char *));
 
235
      }
 
236
#endif
208
237
      if(tmp == NULL){
209
 
        error_plus(0, errno, "realloc");
 
238
        error_plus(0, errno, "reallocarray");
210
239
        free(new_argv);
211
240
        _exit(EX_OSERR);
212
241
      }
343
372
      error_plus(0, errno, "scandir");
344
373
    }
345
374
    if(ret > 0){
346
 
      for(int i = ret-1; i >= 0; i--){
 
375
      const int num_entries = ret;
 
376
      for(int i = 0; i < num_entries; i++){
347
377
        if(proc_id == 0){
348
378
          ret = sscanf(direntries[i]->d_name, "%" SCNuMAX, &proc_id);
349
379
          if(ret < 0){