Mercurial > dovecot > core-2.2
annotate src/util/gdbhelper.c @ 22644:2ed6735ffc7a
director: Change request callback to take mail_host parameter
This allows accessing the IP address both as struct and as string without
any conversions.
| author | Timo Sirainen <timo.sirainen@dovecot.fi> |
|---|---|
| date | Sat, 04 Nov 2017 02:05:26 +0200 |
| parents | 2e2563132d5f |
| children | cb108f786fb4 |
| rev | line source |
|---|---|
|
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2e2563132d5f
Updated copyright notices to include the year 2017.
Stephan Bosch <stephan.bosch@dovecot.fi>
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1 /* Copyright (c) 2006-2017 Dovecot authors, see the included COPYING file */ |
| 3864 | 2 |
| 3 #include "lib.h" | |
| 4 | |
| 5 #include <string.h> | |
| 6 #include <fcntl.h> | |
| 7 #include <unistd.h> | |
| 8 #include <time.h> | |
| 9 #include <sys/wait.h> | |
| 10 | |
| 11 int main(int argc, char *argv[]) | |
| 12 { | |
| 13 pid_t pid = fork(); | |
| 14 const char *path, *cmd; | |
|
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Create the gdbhelper log file only after process has died.
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parents:
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15 int fd_in[2], fd_out[2], fd_log, status; |
| 3864 | 16 |
| 17 if (argc < 2) | |
| 18 i_fatal("Usage: gdbhelper <program> [<args>]"); | |
| 19 | |
| 20 switch (pid) { | |
| 21 case 1: | |
| 22 i_fatal("fork() failed: %m"); | |
| 23 case 0: | |
| 24 /* child */ | |
| 25 (void)execvp(argv[1], argv+1); | |
| 26 i_fatal("execvp(%s) failed: %m", argv[1]); | |
| 27 default: | |
|
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parents:
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28 if (pipe(fd_in) < 0 || pipe(fd_out) < 0) |
| 3864 | 29 i_fatal("pipe() failed: %m"); |
| 30 cmd = "handle SIGPIPE nostop\n" | |
| 31 "handle SIGALRM nostop\n" | |
| 4850 | 32 "handle SIG32 nostop\n" |
| 3864 | 33 "cont\n" |
|
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Use "bt full" for printing backtrace.
Timo Sirainen <tss@iki.fi>
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34 "bt full\n" |
| 3864 | 35 "quit\n"; |
| 36 if (write(fd_in[1], cmd, strlen(cmd)) < 0) | |
| 37 i_fatal("write() failed: %m"); | |
| 38 | |
| 39 if (dup2(fd_in[0], 0) < 0 || | |
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parents:
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40 dup2(fd_out[1], 1) < 0 || |
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parents:
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41 dup2(fd_out[1], 2) < 0) |
| 3864 | 42 i_fatal("dup2() failed: %m"); |
| 43 | |
| 44 cmd = t_strdup_printf("gdb %s %s", argv[1], dec2str(pid)); | |
| 45 if (system(cmd) < 0) | |
| 46 i_fatal("system() failed: %m"); | |
| 47 | |
| 48 if (wait(&status) < 0) | |
| 49 i_fatal("wait() failed: %m"); | |
|
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3b8542d58181
gdbhelper: Check wait() status result a bit more correctly.
Timo Sirainen <tss@iki.fi>
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50 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { |
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parents:
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51 char buf[1024]; |
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52 ssize_t ret; |
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parents:
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53 |
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parents:
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54 path = t_strdup_printf("/tmp/gdbhelper.%s.%s", |
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parents:
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55 dec2str(time(NULL)), |
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parents:
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56 dec2str(pid)); |
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parents:
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57 fd_log = open(path, O_CREAT | O_WRONLY, 0600); |
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Timo Sirainen <tss@iki.fi>
parents:
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58 if (fd_log < 0) |
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c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
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diff
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59 i_fatal("open(%s) failed: %m", path); |
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c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
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diff
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60 |
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c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
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diff
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61 while ((ret = read(fd_out[0], buf, sizeof(buf))) > 0) { |
|
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Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
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62 if (write(fd_log, buf, ret) < 0) |
|
c3dc9cedce78
Create the gdbhelper log file only after process has died.
Timo Sirainen <tss@iki.fi>
parents:
3865
diff
changeset
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63 i_fatal("write(%s) failed: %m", path); |
|
c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
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64 } |
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c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
3865
diff
changeset
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65 if (ret < 0) |
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c3dc9cedce78
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Timo Sirainen <tss@iki.fi>
parents:
3865
diff
changeset
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66 i_fatal("read(pipe) failed: %m"); |
|
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3945a3646c67
Changed i_close_fd() API to set the fd to -1 after closing.
Timo Sirainen <tss@iki.fi>
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67 i_close_fd(&fd_log); |
| 3864 | 68 } |
| 69 } | |
| 70 return 0; | |
| 71 } |