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- Committer: Björn Påhlsson
- Date: 2010-09-02 18:53:38 UTC
- mto: (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: belorn@fukt.bsnet.se-20100902185338-d1022sv517txn3sb
early commit to ease todays coding
added
removed
plugins.d/usplash.c
31
31
#include <fcntl.h> /* open(), O_WRONLY, O_RDONLY */
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#include <iso646.h> /* and, or, not*/
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#include <errno.h> /* errno, EINTR */
34
#include <error.h>
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#include <sys/types.h> /* size_t, ssize_t, pid_t, DIR, struct
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dirent */
37
36
#include <stddef.h> /* NULL */
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#include <string.h> /* strlen(), memcmp() */
39
#include <stdio.h> /* asprintf()*/
38
#include <stdio.h> /* asprintf(), perror() */
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#include <unistd.h> /* close(), write(), readlink(),
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read(), STDOUT_FILENO, sleep(),
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41
fork(), setuid(), geteuid(),
154
153
size_t cmdline_len = 0;
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DIR *proc_dir = opendir("/proc");
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if(proc_dir == NULL){
157
error(0, errno, "opendir");
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perror("opendir");
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return -1;
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}
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errno = 0;
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char *exe_link;
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ret = asprintf(&exe_link, "/proc/%s/exe", proc_ent->d_name);
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if(ret == -1){
185
error(0, errno, "asprintf");
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perror("asprintf");
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goto fail_find_usplash;
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}
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187
194
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free(exe_link);
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continue;
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}
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error(0, errno, "lstat");
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perror("lstat");
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free(exe_link);
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goto fail_find_usplash;
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}
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ret = asprintf(&cmdline_filename, "/proc/%s/cmdline",
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proc_ent->d_name);
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if(ret == -1){
228
error(0, errno, "asprintf");
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perror("asprintf");
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228
goto fail_find_usplash;
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}
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cl_fd = open(cmdline_filename, O_RDONLY);
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free(cmdline_filename);
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if(cl_fd == -1){
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error(0, errno, "open");
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perror("open");
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goto fail_find_usplash;
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}
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}
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if(cmdline_len + blocksize > cmdline_allocated){
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tmp = realloc(cmdline, cmdline_allocated + blocksize);
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if(tmp == NULL){
246
error(0, errno, "realloc");
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perror("realloc");
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close(cl_fd);
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goto fail_find_usplash;
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}
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sret = read(cl_fd, cmdline + cmdline_len,
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cmdline_allocated - cmdline_len);
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if(sret == -1){
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error(0, errno, "read");
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perror("read");
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close(cl_fd);
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goto fail_find_usplash;
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}
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} while(sret != 0);
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ret = close(cl_fd);
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if(ret == -1){
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error(0, errno, "close");
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perror("close");
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goto fail_find_usplash;
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}
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}
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/* Close directory */
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ret = closedir(proc_dir);
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if(ret == -1){
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error(0, errno, "closedir");
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perror("closedir");
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goto fail_find_usplash;
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}
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/* Success */
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sigemptyset(&new_action.sa_mask);
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ret = sigaddset(&new_action.sa_mask, SIGINT);
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if(ret == -1){
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error(0, errno, "sigaddset");
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perror("sigaddset");
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status = EX_OSERR;
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goto failure;
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}
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ret = sigaddset(&new_action.sa_mask, SIGHUP);
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if(ret == -1){
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error(0, errno, "sigaddset");
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perror("sigaddset");
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status = EX_OSERR;
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goto failure;
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}
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ret = sigaddset(&new_action.sa_mask, SIGTERM);
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if(ret == -1){
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error(0, errno, "sigaddset");
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perror("sigaddset");
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status = EX_OSERR;
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goto failure;
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}
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ret = sigaction(SIGINT, NULL, &old_action);
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if(ret == -1){
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if(errno != EINTR){
346
error(0, errno, "sigaction");
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perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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ret = sigaction(SIGINT, &new_action, NULL);
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if(ret == -1){
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if(errno != EINTR){
355
error(0, errno, "sigaction");
354
perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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ret = sigaction(SIGHUP, NULL, &old_action);
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if(ret == -1){
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if(errno != EINTR){
364
error(0, errno, "sigaction");
363
perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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ret = sigaction(SIGHUP, &new_action, NULL);
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370
if(ret == -1){
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if(errno != EINTR){
373
error(0, errno, "sigaction");
372
perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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ret = sigaction(SIGTERM, NULL, &old_action);
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if(ret == -1){
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if(errno != EINTR){
382
error(0, errno, "sigaction");
381
perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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ret = sigaction(SIGTERM, &new_action, NULL);
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388
if(ret == -1){
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if(errno != EINTR){
391
error(0, errno, "sigaction");
390
perror("sigaction");
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status = EX_OSERR;
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}
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goto failure;
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/* Write command to FIFO */
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if(not usplash_write(&fifo_fd, "TIMEOUT", "0")){
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401
if(errno != EINTR){
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error(0, errno, "usplash_write");
402
perror("usplash_write");
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status = EX_OSERR;
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404
}
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goto failure;
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411
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if(not usplash_write(&fifo_fd, "INPUTQUIET", prompt)){
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if(errno != EINTR){
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error(0, errno, "usplash_write");
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perror("usplash_write");
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status = EX_OSERR;
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}
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goto failure;
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outfifo_fd = open("/dev/.initramfs/usplash_outfifo", O_RDONLY);
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430
if(outfifo_fd == -1){
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431
if(errno != EINTR){
433
error(0, errno, "open");
432
perror("open");
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433
status = EX_OSERR;
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434
}
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goto failure;
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448
char *tmp = realloc(buf, buf_allocated + blocksize);
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449
if(tmp == NULL){
451
450
if(errno != EINTR){
452
error(0, errno, "realloc");
451
perror("realloc");
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452
status = EX_OSERR;
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453
}
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454
goto failure;
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460
buf_allocated - buf_len);
462
461
if(sret == -1){
463
462
if(errno != EINTR){
464
error(0, errno, "read");
463
perror("read");
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464
status = EX_OSERR;
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465
}
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TEMP_FAILURE_RETRY(close(outfifo_fd));
476
475
ret = close(outfifo_fd);
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if(ret == -1){
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477
if(errno != EINTR){
479
error(0, errno, "close");
478
perror("close");
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479
status = EX_OSERR;
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480
}
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goto failure;
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490
489
if(not usplash_write(&fifo_fd, "TIMEOUT", "15")){
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if(errno != EINTR){
492
error(0, errno, "usplash_write");
491
perror("usplash_write");
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492
status = EX_OSERR;
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493
}
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494
goto failure;
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501
ret = close(fifo_fd);
503
502
if(ret == -1){
504
503
if(errno != EINTR){
505
error(0, errno, "close");
504
perror("close");
506
505
status = EX_OSERR;
507
506
}
508
507
goto failure;
516
515
sret = write(STDOUT_FILENO, buf + written, buf_len - written);
517
516
if(sret == -1){
518
517
if(errno != EINTR){
519
error(0, errno, "write");
518
perror("write");
520
519
status = EX_OSERR;
521
520
}
522
521
goto failure;
553
552
if(fifo_fd != -1){
554
553
ret = (int)TEMP_FAILURE_RETRY(close(fifo_fd));
555
554
if(ret == -1 and errno != EINTR){
556
error(0, errno, "close");
555
perror("close");
557
556
}
558
557
fifo_fd = -1;
559
558
}
562
561
if(outfifo_fd != -1){
563
562
ret = (int)TEMP_FAILURE_RETRY(close(outfifo_fd));
564
563
if(ret == -1){
565
error(0, errno, "close");
564
perror("close");
566
565
}
567
566
}
568
567
576
575
(sizeof(char *)
577
576
* (size_t)(cmdline_argc + 2)));
578
577
if(tmp == NULL){
579
error(0, errno, "realloc");
578
perror("realloc");
580
579
free(cmdline_argv);
581
580
return status;
582
581
}
603
602
the real user ID (_mandos) */
604
603
ret = setuid(geteuid());
605
604
if(ret == -1){
606
error(0, errno, "setuid");
605
perror("setuid");
607
606
}
608
607
609
608
setsid();
610
609
ret = chdir("/");
611
610
if(ret == -1){
612
error(0, errno, "chdir");
611
perror("chdir");
613
612
_exit(EX_OSERR);
614
613
}
615
614
/* if(fork() != 0){ */
617
616
/* } */
618
617
ret = dup2(STDERR_FILENO, STDOUT_FILENO); /* replace our stdout */
619
618
if(ret == -1){
620
error(0, errno, "dup2");
619
perror("dup2");
621
620
_exit(EX_OSERR);
622
621
}
623
622
624
623
execv(usplash_name, cmdline_argv);
625
624
if(not interrupted_by_signal){
626
error(0, errno, "execv");
625
perror("execv");
627
626
}
628
627
free(cmdline);
629
628
free(cmdline_argv);
634
633
sleep(2);
635
634
if(not usplash_write(&fifo_fd, "PULSATE", NULL)){
636
635
if(errno != EINTR){
637
error(0, errno, "usplash_write");
636
perror("usplash_write");
638
637
}
639
638
}
640
639
642
641
if(fifo_fd != -1){
643
642
ret = (int)TEMP_FAILURE_RETRY(close(fifo_fd));
644
643
if(ret == -1 and errno != EINTR){
645
error(0, errno, "close");
644
perror("close");
646
645
}
647
646
fifo_fd = -1;
648
647
}
653
652
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
654
653
&signal_action, NULL));
655
654
if(ret == -1){
656
error(0, errno, "sigaction");
655
perror("sigaction");
657
656
}
658
657
do {
659
658
ret = raise(signal_received);
660
659
} while(ret != 0 and errno == EINTR);
661
660
if(ret != 0){
662
error(0, errno, "raise");
661
perror("raise");
663
662
abort();
664
663
}
665
664
TEMP_FAILURE_RETRY(pause());
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