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

  • Committer: Teddy Hogeborn
  • Date: 2019-07-27 10:11:45 UTC
  • mto: This revision was merged to the branch mainline in revision 384.
  • Revision ID: teddy@recompile.se-20190727101145-jnpbpf8220gldbcd
Add dracut(8) support

Add support for the dracut(8) system for generating initramfs image
files; dracut is an alternative to the "initramfs-tools" package.

* .bzrignore (dracut-module/password-agent): Ignore new binary file.
* dracut-module: New directory for the dracut module.
* INSTALL (Prerequisites/Libraries/Mandos Client): Add dracut as an
                                                   alternative to
                                                   initramfs-tools,
                                                   and also add GLib.
* Makefile (DRACUTMODULE, GLIB_CFLAGS, GLIB_LIBS): New.
  (CPROGS): Add "dracut-module/password-agent".
  (DOCS): Add "dracut-module/password-agent.8mandos".
  (dracut-module/password-agent.8mandos): New.
  (dracut-module/password-agent.8mandos.xhtml): - '' -
  (dracut-module/password-agent): - '' -
  (check): Add command to run tests of password-agent(8mandos).
  (install-client-nokey): Also install the dracut module directory,
                          its files, and the password-agent(8mandos)
                          manual page.
  (install-client): To update the initramfs image file, run
                    update-initramfs or dracut depending on what is
                    installed.
  (uninstall-client): - '' - and also uninstall the the files in the
                      dracut module directory, that directory itself,
                      and the password-agent(8mandos) manual page.
* debian/control (Build-Depends): Add "libglib2.0-dev (>=2.40)".
  (Package: mandos-client/Depends): Add "dracut (>= 044+241-3)" as an
                                    alternative dependency to
                                    initramfs-tools.
  (Package: mandos-client/Conflicts): New; set to
                                      "dracut-config-generic".
  (debian/mandos-client.README.Debian): Document alternative commands
                                        to update the initramfs image
                                        for when dracut is used.
* debian/mandos-client.postinst (update_initramfs): Use alternative
                                                    commands to update
                                                    the initramfs
                                                    image for when
                                                    dracut is used.
* debian/tests/control (password-agent, password-agent-suid): Add two
                                                              new tests.
* dracut-module/ask-password-mandos.path: New.
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/cmdline-mandos.sh: - '' -
* dracut-module/module-setup.sh: - '' -
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: - '' -
* initramfs-unpack: Use the dracut "skipcpio" command, if available.
                    Also be more flexible and try hard to detect where
                    compressed data starts.
* plugins.d/mandos-client.xml (SECURITY): Be more precise that the
                                          mandos-client binary might
                                          not always be setuid, but
                                          that the program assumes
                                          that it has been started
                                          that way.
* plugins.d/password-prompt.c: Add new "--prompt" option.
  (conflict_detection): First try to detect the new PID file of
                        plymouth.
  (main): Define and use new "prompt" variable.
* plugins.d/password-prompt.xml (SYNOPSIS): Show new --prompt option.
  (DESCRIPTION): Describe new behavior of looking for plymouth PID
                 file.
  (OPTIONS): Document new "--prompt" option.
  (ENVIRONMENT): Clarify that the CRYPTTAB_SOURCE and CRYPTTAB_NAME
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the CRYPTTAB_SOURCE and
                 CRYPTTAB_NAME comes from, since this can now be
                 either initramfs-tools or dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference, and add commas
              to separate the other references.
* plugins.d/plymouth.c: Add new "--prompt" and "--debug" options.
  (debug): New global flag.
  (fprintf_plus): New function, used for debug output.
  (exec_and_wait): Add extra "const" to "argv" argument.
  (main): Define and use new "prompt" variable.  Add debug output.
  (main/options, main/parse_opt): New; used to parse options.
* plugins.d/plymouth.xml (SYNOPSIS): Show new options.
  (OPTIONS): Document new options.
  (ENVIRONMENT): Clarify that the cryptsource and crypttarget
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the cryptsource and crypttarget
                 comes from, since this can now be either
                 initramfs-tools or dracut.
  (EXAMPLE): Add an example using an option.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/splashy.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/usplash.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.

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Lines of Context:
dracut-module/password-agent.c
48
48
#include <error.h>              /* error() */
49
49
#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
50
50
#include <errno.h>              /* errno, error_t, EACCES,
51
 
                                   ENAMETOOLONG, ENOENT, ENOTDIR,
52
 
                                   EEXIST, ECHILD, EPERM, ENOMEM,
53
 
                                   EAGAIN, EINTR, ENOBUFS, EADDRINUSE,
 
51
                                   ENAMETOOLONG, ENOENT, EEXIST,
 
52
                                   ECHILD, EPERM, ENOMEM, EAGAIN,
 
53
                                   EINTR, ENOBUFS, EADDRINUSE,
54
54
                                   ECONNREFUSED, ECONNRESET,
55
55
                                   ETOOMANYREFS, EMSGSIZE, EBADF,
56
56
                                   EINVAL */
83
83
#include <sys/mman.h>           /* munlock(), mlock() */
84
84
#include <fcntl.h>              /* O_CLOEXEC, O_NONBLOCK, fcntl(),
85
85
                                   F_GETFD, F_GETFL, FD_CLOEXEC,
86
 
                                   open(), O_WRONLY, O_NOCTTY,
87
 
                                   O_RDONLY, O_NOFOLLOW */
 
86
                                   open(), O_WRONLY, O_RDONLY */
88
87
#include <sys/wait.h>           /* waitpid(), WNOHANG, WIFEXITED(),
89
88
                                   WEXITSTATUS() */
90
89
#include <limits.h>             /* PIPE_BUF, NAME_MAX, INT_MAX */
91
90
#include <sys/inotify.h>        /* inotify_init1(), IN_NONBLOCK,
92
91
                                   IN_CLOEXEC, inotify_add_watch(),
93
92
                                   IN_CLOSE_WRITE, IN_MOVED_TO,
94
 
                                   IN_MOVED_FROM, IN_DELETE,
95
 
                                   IN_EXCL_UNLINK, IN_ONLYDIR,
96
 
                                   struct inotify_event */
 
93
                                   IN_DELETE, struct inotify_event */
97
94
#include <fnmatch.h>            /* fnmatch(), FNM_FILE_NAME */
98
95
#include <stdio.h>              /* asprintf(), FILE, fopen(),
99
96
                                   getline(), sscanf(), feof(),
434
431
    case EACCES:
435
432
    case ENAMETOOLONG:
436
433
    case ENOENT:
437
 
    case ENOTDIR:
438
434
      return EX_OSFILE;
439
435
    default:
440
436
      return EX_OSERR;
1021
1017
    return false;
1022
1018
  }
1023
1019
 
1024
 
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE | IN_MOVED_TO
1025
 
                       | IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK
1026
 
                       | IN_ONLYDIR)
 
1020
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE
 
1021
                       | IN_MOVED_TO | IN_DELETE)
1027
1022
     == -1){
1028
1023
    error(0, errno, "Failed to create inotify watch on %s", dir);
1029
1024
    return false;
1076
1071
  /* "sufficient to read at least one event." - inotify(7) */
1077
1072
  const size_t ievent_size = (sizeof(struct inotify_event)
1078
1073
                              + NAME_MAX + 1);
1079
 
  struct {
1080
 
    struct inotify_event event;
1081
 
    char name_buffer[NAME_MAX + 1];
1082
 
  } ievent_buffer;
1083
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
1074
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
1075
  struct inotify_event *ievent = ((struct inotify_event *)
 
1076
                                  ievent_buffer);
1084
1077
 
1085
1078
  const ssize_t read_length = read(fd, ievent, ievent_size);
1086
1079
  if(read_length == 0){ /* EOF */
1124
1117
             immediately */
1125
1118
          queue->next_run = 1;
1126
1119
        }
1127
 
      } else if(ievent->mask & (IN_MOVED_FROM | IN_DELETE)){
 
1120
      } else if(ievent->mask & IN_DELETE){
1128
1121
        if(not string_set_add(cancelled_filenames,
1129
1122
                              question_filename)){
1130
1123
          error(0, errno, "Could not add question %s to"
2227
2220
 
2228
2221
  {
2229
2222
    __attribute__((cleanup(cleanup_close)))
2230
 
      const int devnull_fd = open("/dev/null",
2231
 
                                  O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
2223
      const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
2232
2224
    g_assert_cmpint(devnull_fd, >=, 0);
2233
2225
    __attribute__((cleanup(cleanup_close)))
2234
2226
      const int real_stderr_fd = dup(STDERR_FILENO);
2258
2250
    {
2259
2251
      __attribute__((cleanup(cleanup_close)))
2260
2252
        const int devnull_fd = open("/dev/null",
2261
 
                                    O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
2253
                                    O_WRONLY | O_CLOEXEC);
2262
2254
      g_assert_cmpint(devnull_fd, >=, 0);
2263
2255
      __attribute__((cleanup(cleanup_close)))
2264
2256
        const int real_stderr_fd = dup(STDERR_FILENO);
2909
2901
 
2910
2902
  __attribute__((cleanup(cleanup_close)))
2911
2903
    const int devnull_fd = open("/dev/null",
2912
 
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
2904
                                O_WRONLY | O_CLOEXEC);
2913
2905
  g_assert_cmpint(devnull_fd, >=, 0);
2914
2906
  __attribute__((cleanup(cleanup_close)))
2915
2907
    const int real_stderr_fd = dup(STDERR_FILENO);
2980
2972
 
2981
2973
  __attribute__((cleanup(cleanup_close)))
2982
2974
    const int devnull_fd = open("/dev/null",
2983
 
                                O_WRONLY | O_CLOEXEC, O_NOCTTY);
 
2975
                                O_WRONLY | O_CLOEXEC);
2984
2976
  g_assert_cmpint(devnull_fd, >=, 0);
2985
2977
  __attribute__((cleanup(cleanup_close)))
2986
2978
    const int real_stderr_fd = dup(STDERR_FILENO);
3024
3016
    buffer password = {};
3025
3017
 
3026
3018
  /* Reading /proc/self/mem from offset 0 will always give EIO */
3027
 
  const int fd = open("/proc/self/mem",
3028
 
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
 
3019
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
3029
3020
 
3030
3021
  bool password_is_read = false;
3031
3022
  bool quit_now = false;
3459
3450
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
3460
3451
}
3461
3452
 
3462
 
static void test_add_inotify_dir_watch_nondir(__attribute__((unused))
3463
 
                                              test_fixture *fixture,
3464
 
                                            __attribute__((unused))
3465
 
                                              gconstpointer
3466
 
                                              user_data){
3467
 
  __attribute__((cleanup(cleanup_close)))
3468
 
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
3469
 
  g_assert_cmpint(epoll_fd, >=, 0);
3470
 
  __attribute__((cleanup(cleanup_queue)))
3471
 
    task_queue *queue = create_queue();
3472
 
  g_assert_nonnull(queue);
3473
 
  __attribute__((cleanup(string_set_clear)))
3474
 
    string_set cancelled_filenames = {};
3475
 
  const mono_microsecs current_time = 0;
3476
 
 
3477
 
  bool quit_now = false;
3478
 
  buffer password = {};
3479
 
  bool mandos_client_exited = false;
3480
 
  bool password_is_read = false;
3481
 
 
3482
 
  const char not_a_directory[] = "/dev/tty";
3483
 
 
3484
 
  FILE *real_stderr = stderr;
3485
 
  FILE *devnull = fopen("/dev/null", "we");
3486
 
  g_assert_nonnull(devnull);
3487
 
  stderr = devnull;
3488
 
  g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
3489
 
                                       &password, not_a_directory,
3490
 
                                       &cancelled_filenames,
3491
 
                                       &current_time,
3492
 
                                       &mandos_client_exited,
3493
 
                                       &password_is_read));
3494
 
  stderr = real_stderr;
3495
 
  g_assert_cmpint(fclose(devnull), ==, 0);
3496
 
 
3497
 
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
3498
 
}
3499
 
 
3500
3453
static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))
3501
3454
                                              test_fixture *fixture,
3502
3455
                                              __attribute__((unused))
3717
3670
}
3718
3671
 
3719
3672
static
3720
 
void test_add_inotify_dir_watch_IN_MOVED_FROM(__attribute__((unused))
3721
 
                                              test_fixture *fixture,
3722
 
                                              __attribute__((unused))
3723
 
                                              gconstpointer
3724
 
                                              user_data){
3725
 
  __attribute__((cleanup(cleanup_close)))
3726
 
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
3727
 
  g_assert_cmpint(epoll_fd, >=, 0);
3728
 
  __attribute__((cleanup(cleanup_queue)))
3729
 
    task_queue *queue = create_queue();
3730
 
  g_assert_nonnull(queue);
3731
 
  __attribute__((cleanup(string_set_clear)))
3732
 
    string_set cancelled_filenames = {};
3733
 
  const mono_microsecs current_time = 0;
3734
 
 
3735
 
  bool quit_now = false;
3736
 
  buffer password = {};
3737
 
  bool mandos_client_exited = false;
3738
 
  bool password_is_read = false;
3739
 
 
3740
 
  __attribute__((cleanup(cleanup_string)))
3741
 
    char *tempdir = make_temporary_directory();
3742
 
  g_assert_nonnull(tempdir);
3743
 
 
3744
 
  __attribute__((cleanup(cleanup_string)))
3745
 
    char *tempfilename = make_temporary_file_in_directory(tempdir);
3746
 
  g_assert_nonnull(tempfilename);
3747
 
 
3748
 
  __attribute__((cleanup(cleanup_string)))
3749
 
    char *targetdir = make_temporary_directory();
3750
 
  g_assert_nonnull(targetdir);
3751
 
 
3752
 
  __attribute__((cleanup(cleanup_string)))
3753
 
    char *targetfilename = NULL;
3754
 
  g_assert_cmpint(asprintf(&targetfilename, "%s/%s", targetdir,
3755
 
                           basename(tempfilename)), >, 0);
3756
 
  g_assert_nonnull(targetfilename);
3757
 
 
3758
 
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
3759
 
                                      &password, tempdir,
3760
 
                                      &cancelled_filenames,
3761
 
                                      &current_time,
3762
 
                                      &mandos_client_exited,
3763
 
                                      &password_is_read));
3764
 
 
3765
 
  g_assert_cmpint(rename(tempfilename, targetfilename), ==, 0);
3766
 
 
3767
 
  const task_context *const added_read_task
3768
 
    = find_matching_task(queue,
3769
 
                         (task_context){ .func=read_inotify_event });
3770
 
  g_assert_nonnull(added_read_task);
3771
 
 
3772
 
  /* "sufficient to read at least one event." - inotify(7) */
3773
 
  const size_t ievent_size = (sizeof(struct inotify_event)
3774
 
                              + NAME_MAX + 1);
3775
 
  struct inotify_event *ievent = malloc(ievent_size);
3776
 
  g_assert_nonnull(ievent);
3777
 
 
3778
 
  ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);
3779
 
 
3780
 
  g_assert_cmpint((int)read_size, >, 0);
3781
 
  g_assert_true(ievent->mask & IN_MOVED_FROM);
3782
 
  g_assert_cmpstr(ievent->name, ==, basename(tempfilename));
3783
 
 
3784
 
  free(ievent);
3785
 
 
3786
 
  g_assert_cmpint(unlink(targetfilename), ==, 0);
3787
 
  g_assert_cmpint(rmdir(targetdir), ==, 0);
3788
 
  g_assert_cmpint(rmdir(tempdir), ==, 0);
3789
 
}
3790
 
 
3791
 
static
3792
3673
void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))
3793
3674
                                          test_fixture *fixture,
3794
3675
                                          __attribute__((unused))
3852
3733
  g_assert_cmpint(rmdir(tempdir), ==, 0);
3853
3734
}
3854
3735
 
3855
 
static
3856
 
void test_add_inotify_dir_watch_IN_EXCL_UNLINK(__attribute__((unused))
3857
 
                                               test_fixture *fixture,
3858
 
                                               __attribute__((unused))
3859
 
                                               gconstpointer
3860
 
                                               user_data){
3861
 
  __attribute__((cleanup(cleanup_close)))
3862
 
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
3863
 
  g_assert_cmpint(epoll_fd, >=, 0);
3864
 
  __attribute__((cleanup(cleanup_queue)))
3865
 
    task_queue *queue = create_queue();
3866
 
  g_assert_nonnull(queue);
3867
 
  __attribute__((cleanup(string_set_clear)))
3868
 
    string_set cancelled_filenames = {};
3869
 
  const mono_microsecs current_time = 0;
3870
 
 
3871
 
  bool quit_now = false;
3872
 
  buffer password = {};
3873
 
  bool mandos_client_exited = false;
3874
 
  bool password_is_read = false;
3875
 
 
3876
 
  __attribute__((cleanup(cleanup_string)))
3877
 
    char *tempdir = make_temporary_directory();
3878
 
  g_assert_nonnull(tempdir);
3879
 
 
3880
 
  __attribute__((cleanup(cleanup_string)))
3881
 
    char *tempfile = make_temporary_file_in_directory(tempdir);
3882
 
  g_assert_nonnull(tempfile);
3883
 
  int tempfile_fd = open(tempfile, O_WRONLY | O_CLOEXEC | O_NOCTTY
3884
 
                         | O_NOFOLLOW);
3885
 
  g_assert_cmpint(tempfile_fd, >, 2);
3886
 
 
3887
 
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
3888
 
                                      &password, tempdir,
3889
 
                                      &cancelled_filenames,
3890
 
                                      &current_time,
3891
 
                                      &mandos_client_exited,
3892
 
                                      &password_is_read));
3893
 
  g_assert_cmpint(unlink(tempfile), ==, 0);
3894
 
 
3895
 
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
3896
 
 
3897
 
  const task_context *const added_read_task
3898
 
    = find_matching_task(queue,
3899
 
                         (task_context){ .func=read_inotify_event });
3900
 
  g_assert_nonnull(added_read_task);
3901
 
 
3902
 
  g_assert_cmpint(added_read_task->fd, >, 2);
3903
 
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
3904
 
 
3905
 
  /* "sufficient to read at least one event." - inotify(7) */
3906
 
  const size_t ievent_size = (sizeof(struct inotify_event)
3907
 
                              + NAME_MAX + 1);
3908
 
  struct inotify_event *ievent = malloc(ievent_size);
3909
 
  g_assert_nonnull(ievent);
3910
 
 
3911
 
  ssize_t read_size = 0;
3912
 
  read_size = read(added_read_task->fd, ievent, ievent_size);
3913
 
 
3914
 
  g_assert_cmpint((int)read_size, >, 0);
3915
 
  g_assert_true(ievent->mask & IN_DELETE);
3916
 
  g_assert_cmpstr(ievent->name, ==, basename(tempfile));
3917
 
 
3918
 
  g_assert_cmpint(close(tempfile_fd), ==, 0);
3919
 
 
3920
 
  /* IN_EXCL_UNLINK should make the closing of the previously unlinked
3921
 
     file not appear as an ievent, so we should not see it now. */
3922
 
  read_size = read(added_read_task->fd, ievent, ievent_size);
3923
 
  g_assert_cmpint((int)read_size, ==, -1);
3924
 
  g_assert_true(errno == EAGAIN);
3925
 
 
3926
 
  free(ievent);
3927
 
 
3928
 
  g_assert_cmpint(rmdir(tempdir), ==, 0);
3929
 
}
3930
 
 
3931
3736
static void test_read_inotify_event_readerror(__attribute__((unused))
3932
3737
                                              test_fixture *fixture,
3933
3738
                                              __attribute__((unused))
3939
3744
  const mono_microsecs current_time = 0;
3940
3745
 
3941
3746
  /* Reading /proc/self/mem from offset 0 will always result in EIO */
3942
 
  const int fd = open("/proc/self/mem",
3943
 
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
 
3747
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
3944
3748
 
3945
3749
  bool quit_now = false;
3946
3750
  __attribute__((cleanup(cleanup_queue)))
4125
3929
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4126
3930
                                  + NAME_MAX + 1);
4127
3931
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4128
 
  struct {
4129
 
    struct inotify_event event;
4130
 
    char name_buffer[NAME_MAX + 1];
4131
 
  } ievent_buffer;
4132
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
3932
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
3933
  struct inotify_event *ievent = ((struct inotify_event *)
 
3934
                                  ievent_buffer);
4133
3935
 
4134
3936
  const char dummy_file_name[] = "ask.dummy_file_name";
4135
3937
  ievent->mask = IN_CLOSE_WRITE;
4137
3939
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4138
3940
  const size_t ievent_size = (sizeof(struct inotify_event)
4139
3941
                              + sizeof(dummy_file_name));
4140
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
3942
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4141
3943
                  ==, ievent_size);
4142
3944
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4143
3945
 
4220
4022
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4221
4023
                                  + NAME_MAX + 1);
4222
4024
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4223
 
  struct {
4224
 
    struct inotify_event event;
4225
 
    char name_buffer[NAME_MAX + 1];
4226
 
  } ievent_buffer;
4227
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4025
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
4026
  struct inotify_event *ievent = ((struct inotify_event *)
 
4027
                                  ievent_buffer);
4228
4028
 
4229
4029
  const char dummy_file_name[] = "ask.dummy_file_name";
4230
4030
  ievent->mask = IN_MOVED_TO;
4232
4032
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4233
4033
  const size_t ievent_size = (sizeof(struct inotify_event)
4234
4034
                              + sizeof(dummy_file_name));
4235
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4035
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4236
4036
                  ==, ievent_size);
4237
4037
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4238
4038
 
4298
4098
      }));
4299
4099
}
4300
4100
 
4301
 
static
4302
 
void test_read_inotify_event_IN_MOVED_FROM(__attribute__((unused))
4303
 
                                           test_fixture *fixture,
4304
 
                                           __attribute__((unused))
4305
 
                                           gconstpointer user_data){
4306
 
  __attribute__((cleanup(cleanup_close)))
4307
 
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
4308
 
  g_assert_cmpint(epoll_fd, >=, 0);
4309
 
  __attribute__((cleanup(string_set_clear)))
4310
 
    string_set cancelled_filenames = {};
4311
 
  const mono_microsecs current_time = 0;
4312
 
 
4313
 
  int pipefds[2];
4314
 
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
4315
 
 
4316
 
  /* "sufficient to read at least one event." - inotify(7) */
4317
 
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4318
 
                                  + NAME_MAX + 1);
4319
 
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4320
 
  struct {
4321
 
    struct inotify_event event;
4322
 
    char name_buffer[NAME_MAX + 1];
4323
 
  } ievent_buffer;
4324
 
  struct inotify_event *const ievent = &ievent_buffer.event;
4325
 
 
4326
 
  const char dummy_file_name[] = "ask.dummy_file_name";
4327
 
  ievent->mask = IN_MOVED_FROM;
4328
 
  ievent->len = sizeof(dummy_file_name);
4329
 
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4330
 
  const size_t ievent_size = (sizeof(struct inotify_event)
4331
 
                              + sizeof(dummy_file_name));
4332
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4333
 
                  ==, ievent_size);
4334
 
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4335
 
 
4336
 
  bool quit_now = false;
4337
 
  buffer password = {};
4338
 
  bool mandos_client_exited = false;
4339
 
  bool password_is_read = false;
4340
 
  __attribute__((cleanup(cleanup_queue)))
4341
 
    task_queue *queue = create_queue();
4342
 
  g_assert_nonnull(queue);
4343
 
 
4344
 
  task_context task = {
4345
 
    .func=read_inotify_event,
4346
 
    .epoll_fd=epoll_fd,
4347
 
    .fd=pipefds[0],
4348
 
    .quit_now=&quit_now,
4349
 
    .password=&password,
4350
 
    .filename=strdup("/nonexistent"),
4351
 
    .cancelled_filenames=&cancelled_filenames,
4352
 
    .current_time=&current_time,
4353
 
    .mandos_client_exited=&mandos_client_exited,
4354
 
    .password_is_read=&password_is_read,
4355
 
  };
4356
 
  task.func(task, queue);
4357
 
  g_assert_false(quit_now);
4358
 
  g_assert_true(queue->next_run == 0);
4359
 
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
4360
 
 
4361
 
  g_assert_nonnull(find_matching_task(queue, (task_context){
4362
 
        .func=read_inotify_event,
4363
 
        .epoll_fd=epoll_fd,
4364
 
        .fd=pipefds[0],
4365
 
        .quit_now=&quit_now,
4366
 
        .password=&password,
4367
 
        .filename=task.filename,
4368
 
        .cancelled_filenames=&cancelled_filenames,
4369
 
        .current_time=&current_time,
4370
 
        .mandos_client_exited=&mandos_client_exited,
4371
 
        .password_is_read=&password_is_read,
4372
 
      }));
4373
 
 
4374
 
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
4375
 
                                   EPOLLIN | EPOLLRDHUP));
4376
 
 
4377
 
  __attribute__((cleanup(cleanup_string)))
4378
 
    char *filename = NULL;
4379
 
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
4380
 
                           dummy_file_name), >, 0);
4381
 
  g_assert_nonnull(filename);
4382
 
  g_assert_true(string_set_contains(*task.cancelled_filenames,
4383
 
                                    filename));
4384
 
}
4385
 
 
4386
4101
static void test_read_inotify_event_IN_DELETE(__attribute__((unused))
4387
4102
                                              test_fixture *fixture,
4388
4103
                                              __attribute__((unused))
4402
4117
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4403
4118
                                  + NAME_MAX + 1);
4404
4119
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4405
 
  struct {
4406
 
    struct inotify_event event;
4407
 
    char name_buffer[NAME_MAX + 1];
4408
 
  } ievent_buffer;
4409
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4120
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
4121
  struct inotify_event *ievent = ((struct inotify_event *)
 
4122
                                  ievent_buffer);
4410
4123
 
4411
4124
  const char dummy_file_name[] = "ask.dummy_file_name";
4412
4125
  ievent->mask = IN_DELETE;
4414
4127
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4415
4128
  const size_t ievent_size = (sizeof(struct inotify_event)
4416
4129
                              + sizeof(dummy_file_name));
4417
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4130
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4418
4131
                  ==, ievent_size);
4419
4132
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4420
4133
 
4486
4199
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4487
4200
                                  + NAME_MAX + 1);
4488
4201
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4489
 
  struct {
4490
 
    struct inotify_event event;
4491
 
    char name_buffer[NAME_MAX + 1];
4492
 
  } ievent_buffer;
4493
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4202
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
4203
  struct inotify_event *ievent = ((struct inotify_event *)
 
4204
                                  ievent_buffer);
4494
4205
 
4495
4206
  const char dummy_file_name[] = "ignored.dummy_file_name";
4496
4207
  ievent->mask = IN_CLOSE_WRITE;
4498
4209
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4499
4210
  const size_t ievent_size = (sizeof(struct inotify_event)
4500
4211
                              + sizeof(dummy_file_name));
4501
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4212
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4502
4213
                  ==, ievent_size);
4503
4214
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4504
4215
 
4562
4273
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4563
4274
                                  + NAME_MAX + 1);
4564
4275
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4565
 
  struct {
4566
 
    struct inotify_event event;
4567
 
    char name_buffer[NAME_MAX + 1];
4568
 
  } ievent_buffer;
4569
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4276
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
4277
  struct inotify_event *ievent = ((struct inotify_event *)
 
4278
                                  ievent_buffer);
4570
4279
 
4571
4280
  const char dummy_file_name[] = "ignored.dummy_file_name";
4572
4281
  ievent->mask = IN_MOVED_TO;
4574
4283
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4575
4284
  const size_t ievent_size = (sizeof(struct inotify_event)
4576
4285
                              + sizeof(dummy_file_name));
4577
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4286
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4578
4287
                  ==, ievent_size);
4579
4288
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4580
4289
 
4621
4330
                                   EPOLLIN | EPOLLRDHUP));
4622
4331
}
4623
4332
 
4624
 
static void
4625
 
test_read_inotify_event_IN_MOVED_FROM_badname(__attribute__((unused))
4626
 
                                              test_fixture *fixture,
4627
 
                                              __attribute__((unused))
4628
 
                                              gconstpointer
4629
 
                                              user_data){
4630
 
  __attribute__((cleanup(cleanup_close)))
4631
 
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
4632
 
  g_assert_cmpint(epoll_fd, >=, 0);
4633
 
  __attribute__((cleanup(string_set_clear)))
4634
 
    string_set cancelled_filenames = {};
4635
 
  const mono_microsecs current_time = 0;
4636
 
 
4637
 
  int pipefds[2];
4638
 
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
4639
 
 
4640
 
  /* "sufficient to read at least one event." - inotify(7) */
4641
 
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4642
 
                                  + NAME_MAX + 1);
4643
 
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4644
 
  struct {
4645
 
    struct inotify_event event;
4646
 
    char name_buffer[NAME_MAX + 1];
4647
 
  } ievent_buffer;
4648
 
  struct inotify_event *const ievent = &ievent_buffer.event;
4649
 
 
4650
 
  const char dummy_file_name[] = "ignored.dummy_file_name";
4651
 
  ievent->mask = IN_MOVED_FROM;
4652
 
  ievent->len = sizeof(dummy_file_name);
4653
 
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4654
 
  const size_t ievent_size = (sizeof(struct inotify_event)
4655
 
                              + sizeof(dummy_file_name));
4656
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4657
 
                  ==, ievent_size);
4658
 
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4659
 
 
4660
 
  bool quit_now = false;
4661
 
  buffer password = {};
4662
 
  bool mandos_client_exited = false;
4663
 
  bool password_is_read = false;
4664
 
  __attribute__((cleanup(cleanup_queue)))
4665
 
    task_queue *queue = create_queue();
4666
 
  g_assert_nonnull(queue);
4667
 
 
4668
 
  task_context task = {
4669
 
    .func=read_inotify_event,
4670
 
    .epoll_fd=epoll_fd,
4671
 
    .fd=pipefds[0],
4672
 
    .quit_now=&quit_now,
4673
 
    .password=&password,
4674
 
    .filename=strdup("/nonexistent"),
4675
 
    .cancelled_filenames=&cancelled_filenames,
4676
 
    .current_time=&current_time,
4677
 
    .mandos_client_exited=&mandos_client_exited,
4678
 
    .password_is_read=&password_is_read,
4679
 
  };
4680
 
  task.func(task, queue);
4681
 
  g_assert_false(quit_now);
4682
 
  g_assert_true(queue->next_run == 0);
4683
 
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
4684
 
 
4685
 
  g_assert_nonnull(find_matching_task(queue, (task_context){
4686
 
        .func=read_inotify_event,
4687
 
        .epoll_fd=epoll_fd,
4688
 
        .fd=pipefds[0],
4689
 
        .quit_now=&quit_now,
4690
 
        .password=&password,
4691
 
        .filename=task.filename,
4692
 
        .cancelled_filenames=&cancelled_filenames,
4693
 
        .current_time=&current_time,
4694
 
        .mandos_client_exited=&mandos_client_exited,
4695
 
        .password_is_read=&password_is_read,
4696
 
      }));
4697
 
 
4698
 
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
4699
 
                                   EPOLLIN | EPOLLRDHUP));
4700
 
 
4701
 
  __attribute__((cleanup(cleanup_string)))
4702
 
    char *filename = NULL;
4703
 
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
4704
 
                           dummy_file_name), >, 0);
4705
 
  g_assert_nonnull(filename);
4706
 
  g_assert_false(string_set_contains(cancelled_filenames, filename));
4707
 
}
4708
 
 
4709
4333
static
4710
4334
void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))
4711
4335
                                               test_fixture *fixture,
4726
4350
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4727
4351
                                  + NAME_MAX + 1);
4728
4352
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4729
 
  struct {
4730
 
    struct inotify_event event;
4731
 
    char name_buffer[NAME_MAX + 1];
4732
 
  } ievent_buffer;
4733
 
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4353
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
 
4354
  struct inotify_event *ievent = ((struct inotify_event *)
 
4355
                                  ievent_buffer);
4734
4356
 
4735
4357
  const char dummy_file_name[] = "ignored.dummy_file_name";
4736
4358
  ievent->mask = IN_DELETE;
4738
4360
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4739
4361
  const size_t ievent_size = (sizeof(struct inotify_event)
4740
4362
                              + sizeof(dummy_file_name));
4741
 
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4363
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
4742
4364
                  ==, ievent_size);
4743
4365
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4744
4366
 
5631
5253
                                            __attribute__((unused))
5632
5254
                                            gconstpointer user_data){
5633
5255
  __attribute__((cleanup(cleanup_close)))
5634
 
    const int epoll_fd = open("/dev/null",
5635
 
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
5256
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
5636
5257
  __attribute__((cleanup(cleanup_string)))
5637
5258
    char *const question_filename = strdup("/nonexistent/question");
5638
5259
  g_assert_nonnull(question_filename);
6042
5663
                                            __attribute__((unused))
6043
5664
                                            gconstpointer user_data){
6044
5665
  __attribute__((cleanup(cleanup_close)))
6045
 
    const int epoll_fd = open("/dev/null",
6046
 
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
5666
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
6047
5667
  __attribute__((cleanup(cleanup_string)))
6048
5668
    char *const question_filename = strdup("/nonexistent/question");
6049
5669
  g_assert_nonnull(question_filename);
6312
5932
                                              const char *const
6313
5933
                                              dirname){
6314
5934
  __attribute__((cleanup(cleanup_close)))
6315
 
    const int devnull_fd = open("/dev/null",
6316
 
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
 
5935
    const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
6317
5936
  g_assert_cmpint(devnull_fd, >=, 0);
6318
5937
  __attribute__((cleanup(cleanup_close)))
6319
5938
    const int real_stderr_fd = dup(STDERR_FILENO);
7954
7573
              test_add_inotify_dir_watch);
7955
7574
  test_add_st("/task-creators/add_inotify_dir_watch/fail",
7956
7575
              test_add_inotify_dir_watch_fail);
7957
 
  test_add_st("/task-creators/add_inotify_dir_watch/not-a-directory",
7958
 
              test_add_inotify_dir_watch_nondir);
7959
7576
  test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",
7960
7577
              test_add_inotify_dir_watch_EAGAIN);
7961
7578
  test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",
7962
7579
              test_add_inotify_dir_watch_IN_CLOSE_WRITE);
7963
7580
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",
7964
7581
              test_add_inotify_dir_watch_IN_MOVED_TO);
7965
 
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_FROM",
7966
 
              test_add_inotify_dir_watch_IN_MOVED_FROM);
7967
 
  test_add_st("/task-creators/add_inotify_dir_watch/IN_EXCL_UNLINK",
7968
 
              test_add_inotify_dir_watch_IN_EXCL_UNLINK);
7969
7582
  test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",
7970
7583
              test_add_inotify_dir_watch_IN_DELETE);
7971
7584
  test_add_st("/task/read_inotify_event/readerror",
7980
7593
              test_read_inotify_event_IN_CLOSE_WRITE);
7981
7594
  test_add_st("/task/read_inotify_event/IN_MOVED_TO",
7982
7595
              test_read_inotify_event_IN_MOVED_TO);
7983
 
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM",
7984
 
              test_read_inotify_event_IN_MOVED_FROM);
7985
7596
  test_add_st("/task/read_inotify_event/IN_DELETE",
7986
7597
              test_read_inotify_event_IN_DELETE);
7987
7598
  test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",
7988
7599
              test_read_inotify_event_IN_CLOSE_WRITE_badname);
7989
7600
  test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",
7990
7601
              test_read_inotify_event_IN_MOVED_TO_badname);
7991
 
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM/badname",
7992
 
              test_read_inotify_event_IN_MOVED_FROM_badname);
7993
7602
  test_add_st("/task/read_inotify_event/IN_DELETE/badname",
7994
7603
              test_read_inotify_event_IN_DELETE_badname);
7995
7604
  test_add_st("/task/open_and_parse_question/ENOENT",