| 460b9539 |
1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2005 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 18 | * USA |
| 19 | */ |
| 20 | |
| 21 | #include <config.h> |
| 22 | #include "types.h" |
| 23 | |
| 24 | #include <unistd.h> |
| 25 | #include <string.h> |
| 26 | #include <errno.h> |
| 27 | |
| 28 | #include "syscalls.h" |
| 29 | #include "logfd.h" |
| 30 | #include "event.h" |
| 31 | #include "log.h" |
| 32 | |
| 33 | struct logfd_state { |
| 34 | const char *tag; |
| 35 | }; |
| 36 | |
| 37 | /* called when bytes are available and at eof */ |
| 38 | static int logfd_readable(ev_source attribute((unused)) *ev, |
| 39 | ev_reader *reader, |
| 40 | int fd, |
| 41 | void *ptr, |
| 42 | size_t bytes, |
| 43 | int eof, |
| 44 | void *u) { |
| 45 | char *nl; |
| 46 | const char *tag = u; |
| 47 | int len; |
| 48 | |
| 49 | while((nl = memchr(ptr, '\n', bytes))) { |
| 50 | len = nl - (char *)ptr; |
| 51 | ev_reader_consume(reader, len + 1); |
| 52 | info("%s: %.*s", tag, len, (char *)ptr); |
| 53 | ptr = nl + 1; |
| 54 | bytes -= len + 1; |
| 55 | } |
| 56 | if(eof && bytes) { |
| 57 | info("%s: %.*s", tag, (int)bytes, (char *)ptr); |
| 58 | ev_reader_consume(reader, bytes); |
| 59 | } |
| 60 | if(eof) |
| 61 | xclose(fd); |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | /* called when a read error occurs */ |
| 66 | static int logfd_error(ev_source attribute((unused)) *ev, |
| 67 | int fd, |
| 68 | int errno_value, |
| 69 | void *u) { |
| 70 | const char *tag = u; |
| 71 | |
| 72 | error(errno_value, "error reading log pipe from %s", tag); |
| 73 | xclose(fd); |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | int logfd(ev_source *ev, const char *tag) { |
| 78 | int p[2]; |
| 79 | |
| 80 | xpipe(p); |
| 81 | cloexec(p[0]); |
| 82 | nonblock(p[0]); |
| 83 | if(!ev_reader_new(ev, p[0], logfd_readable, logfd_error, (void *)tag)) |
| 84 | fatal(errno, "error calling ev_reader_new"); |
| 85 | return p[1]; |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | Local Variables: |
| 90 | c-basic-offset:2 |
| 91 | comment-column:40 |
| 92 | fill-column:79 |
| 93 | indent-tabs-mode:nil |
| 94 | End: |
| 95 | */ |
~mdw / disorder / blame