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Viewing changes to dracut-module/password-agent.c

  • Committer: teddy at recompile
  • Date: 2020-11-29 22:54:26 UTC
  • Revision ID: teddy@recompile.se-20201129225426-6ud4hwj36zo67igi
http://bugs.debian.org/975457
Fix flaky test in password-agent

The test_send_password_to_socket_EMSGSIZE function should not use a
hard-coded constant to trigger an EMSGSIZE error from send().

* dracut-module/password-agent.c (send_password_to_socket): Only save
  errno from send() if it returned < 0.  Show strerror(errno) if
  send() does return EMSGSIZE.  Show number of bytes sent if send()
  sends less than all bytes.
  (test_send_password_to_socket_EMSGSIZE): Do not skip this test on
  non-AMD64 platforms.  Try to find a suitable message size to trigger
  EMSGSIZE before testing send_password_to_socket(), and only skip
  this test if such a triggering message size is not found.

Reported-By: Simon McVittie <smcv@debian.org>
Closes: #975457

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Lines of Context:
dracut-module/password-agent.c
1
 
/* -*- coding: utf-8; lexical-binding: t -*- */
 
1
/* -*- mode: c; coding: utf-8; after-save-hook: (lambda () (let* ((find-build-directory (lambda (try-directory &optional base-directory) (let ((base-directory (or base-directory try-directory))) (cond ((equal try-directory "/") base-directory) ((file-readable-p (concat (file-name-as-directory try-directory) "Makefile")) try-directory) ((funcall find-build-directory (directory-file-name (file-name-directory try-directory)) base-directory)))))) (build-directory (funcall find-build-directory (buffer-file-name))) (local-build-directory (if (fboundp 'file-local-name) (file-local-name build-directory) (or (file-remote-p build-directory 'localname) build-directory))) (command (file-relative-name (file-name-sans-extension (buffer-file-name)) build-directory))) (pcase (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (let ((qbdir (shell-quote-argument local-build-directory)) (qcmd (shell-quote-argument command))) (format "cd %s && CFLAGS=-Werror make --silent %s && %s --test --verbose" qbdir qcmd qcmd)) nil "*Test*")) (0 (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w)))) (_ (with-current-buffer "*Test*" (compilation-mode) (cd-absolute build-directory)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); -*- */
2
2
/*
3
3
 * Mandos password agent - Simple password agent to run Mandos client
4
4
 *
5
 
 * Copyright © 2019-2022 Teddy Hogeborn
6
 
 * Copyright © 2019-2022 Björn Påhlsson
 
5
 * Copyright © 2019-2020 Teddy Hogeborn
 
6
 * Copyright © 2019-2020 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             /* pipe2(), O_CLOEXEC, setresgid(),
27
 
                                   setresuid(), asprintf(), getline(),
28
 
                                   basename() */
29
 
#include <inttypes.h>           /* uintmax_t, strtoumax(), PRIuMAX,
30
 
                                   PRIdMAX, intmax_t, uint32_t,
31
 
                                   SCNx32, SCNuMAX, SCNxMAX */
32
 
#include <stddef.h>             /* size_t, NULL */
 
26
#define _GNU_SOURCE
 
27
#include <inttypes.h>           /* uintmax_t, PRIuMAX, PRIdMAX,
 
28
                                   intmax_t, uint32_t, SCNx32,
 
29
                                   SCNuMAX, SCNxMAX */
 
30
#include <stddef.h>             /* size_t */
33
31
#include <sys/types.h>          /* pid_t, uid_t, gid_t, getuid(),
34
32
                                   getpid() */
35
33
#include <stdbool.h>            /* bool, true, false */
42
40
                                   NSIG, sigismember(), SA_ONSTACK,
43
41
                                   SIG_DFL, SIG_IGN, SIGINT, SIGQUIT,
44
42
                                   SIGHUP, SIGSTOP, SIG_UNBLOCK */
45
 
#include <unistd.h>             /* uid_t, gid_t, close(), pipe2(),
46
 
                                   fork(), _exit(), dup2(),
47
 
                                   STDOUT_FILENO, setresgid(),
48
 
                                   setresuid(), execv(), ssize_t,
49
 
                                   read(), dup3(), getuid(), dup(),
50
 
                                   STDERR_FILENO, pause(), write(),
51
 
                                   rmdir(), unlink(), getpid() */
52
43
#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
53
 
                                   malloc(), free(), realloc(),
54
 
                                   setenv(), calloc(), mkdtemp(),
55
 
                                   mkostemp() */
 
44
                                   malloc(), free(), strtoumax(),
 
45
                                   realloc(), setenv(), calloc(),
 
46
                                   mkdtemp(), mkostemp() */
56
47
#include <iso646.h>             /* not, or, and, xor */
57
48
#include <error.h>              /* error() */
58
49
#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
66
57
#include <string.h>             /* strdup(), memcpy(),
67
58
                                   explicit_bzero(), memset(),
68
59
                                   strcmp(), strlen(), strncpy(),
69
 
                                   memcmp(), basename(), strerror() */
 
60
                                   memcmp(), basename() */
70
61
#include <argz.h>               /* argz_create(), argz_count(),
71
62
                                   argz_extract(), argz_next(),
72
63
                                   argz_add() */
82
73
                                   ARGP_ERR_UNKNOWN, ARGP_KEY_ARGS,
83
74
                                   struct argp, argp_parse(),
84
75
                                   ARGP_NO_EXIT */
85
 
#include <stdint.h>             /* SIZE_MAX, uint32_t */
 
76
#include <stdint.h>             /* SIZE_MAX */
 
77
#include <unistd.h>             /* uid_t, gid_t, close(), pipe2(),
 
78
                                   fork(), _exit(), dup2(),
 
79
                                   STDOUT_FILENO, setresgid(),
 
80
                                   setresuid(), execv(), ssize_t,
 
81
                                   read(), dup3(), getuid(), dup(),
 
82
                                   STDERR_FILENO, pause(), write(),
 
83
                                   rmdir(), unlink(), getpid() */
86
84
#include <sys/mman.h>           /* munlock(), mlock() */
87
85
#include <fcntl.h>              /* O_CLOEXEC, O_NONBLOCK, fcntl(),
88
86
                                   F_GETFD, F_GETFL, FD_CLOEXEC,
112
110
                        g_assert_null(), g_assert_false(),
113
111
                        g_assert_cmpint(), g_assert_cmpuint(),
114
112
                        g_test_skip(), g_assert_cmpstr(),
115
 
                        g_test_message(), g_test_init(), g_test_add(),
116
 
                        g_test_run(), GOptionContext,
117
 
                        g_option_context_new(),
 
113
                        g_test_init(), g_test_add(), g_test_run(),
 
114
                        GOptionContext, g_option_context_new(),
118
115
                        g_option_context_set_help_enabled(), FALSE,
119
116
                        g_option_context_set_ignore_unknown_options(),
120
117
                        gboolean, GOptionEntry, G_OPTION_ARG_NONE,
5981
5978
      g_test_skip("Skipping EMSGSIZE test: Will not try 1GiB");
5982
5979
      return;
5983
5980
    }
5984
 
    message_buffer = realloc(message_buffer, message_size);
 
5981
    free(message_buffer);
 
5982
    message_buffer = malloc(message_size);
5985
5983
    if(message_buffer == NULL){
5986
5984
      g_test_skip("Skipping EMSGSIZE test");
5987
5985
      g_test_message("Failed to malloc() %" PRIuMAX " bytes",
6005
6003
    if(ssret < 0){
6006
6004
      if(saved_errno != EMSGSIZE) {
6007
6005
        g_test_skip("Skipping EMSGSIZE test");
6008
 
        g_test_message("Error on send(%" PRIuMAX " bytes): %s",
6009
 
                       (uintmax_t)message_size,
6010
 
                       strerror(saved_errno));
 
6006
        g_test_message("Error on send(): %s", strerror(saved_errno));
6011
6007
        return;
6012
6008
      }
6013
 
      break;
6014
6009
    } else if(ssret != (ssize_t)message_size){
6015
6010
      g_test_skip("Skipping EMSGSIZE test");
6016
6011
      g_test_message("Partial send(): %" PRIuMAX " of %" PRIdMAX
8195
8190
  g_option_context_free(context);
8196
8191
  return should_run_tests != FALSE;
8197
8192
}
8198
 
 
8199
 
/*
8200
 
Local Variables:
8201
 
run-tests:
8202
 
(lambda ()
8203
 
  (if (not (funcall run-tests-in-test-buffer default-directory))
8204
 
      (funcall show-test-buffer-in-test-window)
8205
 
    (funcall remove-test-window)))
8206
 
run-tests-in-test-buffer:
8207
 
(lambda (dir)
8208
 
  (with-current-buffer (get-buffer-create "*Test*")
8209
 
    (setq buffer-read-only nil
8210
 
          default-directory dir)
8211
 
    (erase-buffer)
8212
 
    (compilation-mode))
8213
 
  (let ((process-result
8214
 
         (let ((inhibit-read-only t))
8215
 
           (process-file-shell-command
8216
 
            (funcall get-command-line) nil "*Test*"))))
8217
 
    (and (numberp process-result)
8218
 
         (= process-result 0))))
8219
 
get-command-line:
8220
 
(lambda ()
8221
 
  (let*
8222
 
      ((build-directory
8223
 
        (funcall find-build-directory (buffer-file-name)))
8224
 
       (local-build-directory
8225
 
        (if (fboundp 'file-local-name)
8226
 
            (file-local-name build-directory)
8227
 
          (or (file-remote-p build-directory 'localname)
8228
 
              build-directory)))
8229
 
       (command
8230
 
        (file-relative-name (file-name-sans-extension
8231
 
                             (buffer-file-name)) build-directory))
8232
 
       (qbdir (shell-quote-argument local-build-directory))
8233
 
       (qcmd (shell-quote-argument command)))
8234
 
    (format (concat "cd %s && CFLAGS=-Werror make --silent %s"
8235
 
             " && %s --test --verbose") qbdir qcmd qcmd)))
8236
 
find-build-directory:
8237
 
(lambda (try-directory &optional base-directory)
8238
 
  (let ((base-directory (or base-directory try-directory)))
8239
 
    (cond ((equal try-directory "/") base-directory)
8240
 
          ((file-readable-p
8241
 
            (concat (file-name-as-directory try-directory)
8242
 
                    "Makefile")) try-directory)
8243
 
          ((funcall find-build-directory
8244
 
                    (directory-file-name (file-name-directory
8245
 
                                          try-directory))
8246
 
                    base-directory)))))
8247
 
show-test-buffer-in-test-window:
8248
 
(lambda ()
8249
 
  (when (not (get-buffer-window-list "*Test*"))
8250
 
    (setq next-error-last-buffer (get-buffer "*Test*"))
8251
 
    (let* ((side (if (>= (window-width) 146) 'right 'bottom))
8252
 
           (display-buffer-overriding-action
8253
 
            `((display-buffer-in-side-window) (side . ,side)
8254
 
              (window-height . fit-window-to-buffer)
8255
 
              (window-width . fit-window-to-buffer))))
8256
 
      (display-buffer "*Test*"))))
8257
 
remove-test-window:
8258
 
(lambda ()
8259
 
  (let ((test-window (get-buffer-window "*Test*")))
8260
 
    (if test-window (delete-window test-window))))
8261
 
eval: (add-hook 'after-save-hook run-tests 90 t)
8262
 
End:
8263
 
*/