Mon, 22 Apr 2024 11:33:04 +0200
Version 0.9.19a2. Dropped TEMPSTATE[] and only use DEVPRESENT[] to mark devices state. Adjusted webpages for this switch in responses. Adjusted MySQL mon_fermenters enum values too. Rename some global Config records to better reflect their real use.Added one-wire json records and websocket. Announce when some onewire device changes. Add UNITS JSON command without parameter. Dropped global tempFormat setting that was never used.
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
1 | /***************************************************************************** |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
2 | * Copyright (C) 2014-2020 |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
3 | * |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
4 | * Michiel Broek <mbroek at mbse dot eu> |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
5 | * |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
6 | * This file is part of the mbsePi-apps |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
7 | * |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
8 | * This is free software; you can redistribute it and/or modify it |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
9 | * under the terms of the GNU General Public License as published by the |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
10 | * Free Software Foundation; either version 2, or (at your option) any |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
11 | * later version. |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
12 | * |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
13 | * mbsePi-apps is distributed in the hope that it will be useful, but |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
16 | * General Public License for more details. |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
17 | * |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
18 | * You should have received a copy of the GNU General Public License |
213
2317b8d644fa
Code cleanup, streamlined error messages.
Michiel Broek <mbroek@mbse.eu>
parents:
106
diff
changeset
|
19 | * along with ThermFerm; see the file COPYING. If not, write to the Free |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
20 | * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
21 | *****************************************************************************/ |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
22 | |
106 | 23 | #include "lock.h" |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
24 | #include "thermferm.h" |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
25 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
26 | /* |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
27 | * Put a lock on this program. |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
28 | */ |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
29 | int lockprog(char *name) |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
30 | { |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
31 | char *tempfile, *lockfile; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
32 | FILE *fp; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
33 | pid_t oldpid; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
34 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
35 | tempfile = calloc(PATH_MAX, sizeof(char)); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
36 | lockfile = calloc(PATH_MAX, sizeof(char)); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
37 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
38 | snprintf(tempfile, PATH_MAX, "/var/run/%s.tmp", name); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
39 | snprintf(lockfile, PATH_MAX, "/var/run/%s.pid", name); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
40 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
41 | if ((fp = fopen(tempfile, "w")) == NULL) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
42 | syslog(LOG_NOTICE, "Can't create lockfile `%s': %s", tempfile, strerror(errno)); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
43 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
44 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
45 | return 1; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
46 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
47 | fprintf(fp, "%10u\n", getpid()); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
48 | fclose(fp); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
49 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
50 | while (TRUE) { |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
51 | if (link(tempfile, lockfile) == 0) { |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
52 | unlink(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
53 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
54 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
55 | return 0; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
56 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
57 | if ((fp = fopen(lockfile, "r")) == NULL) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
58 | syslog(LOG_NOTICE, "Can't open lockfile `%s': %s", tempfile, strerror(errno)); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
59 | unlink(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
60 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
61 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
62 | return 1; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
63 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
64 | if (fscanf(fp, "%u", &oldpid) != 1) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
65 | syslog(LOG_NOTICE, "Can't read old pid from `%s'", tempfile); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
66 | fclose(fp); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
67 | unlink(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
68 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
69 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
70 | return 1; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
71 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
72 | fclose(fp); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
73 | if (kill(oldpid,0) == -1) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
74 | if (errno == ESRCH || errno == EPERM) { |
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
75 | syslog(LOG_NOTICE, "Stale lock found for pid %u\n", oldpid); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
76 | unlink(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
77 | /* no return, try lock again */ |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
78 | } else { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
79 | syslog(LOG_NOTICE, "Kill for %u failed: %s",oldpid, strerror(errno)); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
80 | unlink(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
81 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
82 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
83 | return 1; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
84 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
85 | } else { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
86 | syslog(LOG_NOTICE, "Another %s is already running, pid=%u", name, oldpid); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
87 | unlink(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
88 | free(tempfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
89 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
90 | return 1; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
91 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
92 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
93 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
94 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
95 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
96 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
97 | void ulockprog(char *name) |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
98 | { |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
99 | char *lockfile; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
100 | pid_t oldpid; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
101 | FILE *fp; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
102 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
103 | lockfile = calloc(PATH_MAX, sizeof(char)); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
104 | snprintf(lockfile, PATH_MAX, "/var/run/%s.pid", name); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
105 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
106 | if ((fp = fopen(lockfile, "r")) == NULL) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
107 | syslog(LOG_NOTICE, "Can't open lockfile `%s': %s", lockfile, strerror(errno)); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
108 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
109 | return; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
110 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
111 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
112 | if (fscanf(fp, "%u", &oldpid) != 1) { |
607
021338fc4e4f
Better logging for locking the daemon and fixed stale lock recovery.
Michiel Broek <mbroek@mbse.eu>
parents:
268
diff
changeset
|
113 | syslog(LOG_NOTICE, "Can't read old pid from `%s'", lockfile); |
51
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
114 | fclose(fp); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
115 | unlink(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
116 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
117 | return; |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
118 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
119 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
120 | fclose(fp); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
121 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
122 | if (oldpid == getpid()) { |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
123 | (void)unlink(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
124 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
125 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
126 | free(lockfile); |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
127 | } |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
128 | |
a03b6dac5398
Removed library, bumped to version 0.0.7
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
129 |