Commit | Line | Data |
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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]); | |
e8c92ba7 RK |
83 | if(!ev_reader_new(ev, p[0], logfd_readable, logfd_error, (void *)tag, |
84 | "logfd")) | |
460b9539 | 85 | fatal(errno, "error calling ev_reader_new"); |
86 | return p[1]; | |
87 | } | |
88 | ||
89 | /* | |
90 | Local Variables: | |
91 | c-basic-offset:2 | |
92 | comment-column:40 | |
93 | fill-column:79 | |
94 | indent-tabs-mode:nil | |
95 | End: | |
96 | */ |