1 /*
2 ** Zabbix
3 ** Copyright (C) 2001-2021 Zabbix SIA
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,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 **/
19
20 #include "common.h"
21 #include "sysinfo.h"
22 #include "log.h"
23
vfs_fs_inode(AGENT_REQUEST * request,AGENT_RESULT * result)24 static int vfs_fs_inode(AGENT_REQUEST *request, AGENT_RESULT *result)
25 {
26 #ifdef HAVE_SYS_STATVFS_H
27 # define ZBX_STATFS statvfs
28 # define ZBX_FFREE f_favail
29 #else
30 # define ZBX_STATFS statfs
31 # define ZBX_FFREE f_ffree
32 #endif
33 char *fsname, *mode;
34 zbx_uint64_t total;
35 struct ZBX_STATFS s;
36
37 if (2 < request->nparam)
38 {
39 SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
40 return SYSINFO_RET_FAIL;
41 }
42
43 fsname = get_rparam(request, 0);
44 mode = get_rparam(request, 1);
45
46 if (NULL == fsname || '\0' == *fsname)
47 {
48 SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid first parameter."));
49 return SYSINFO_RET_FAIL;
50 }
51
52 if (0 != ZBX_STATFS(fsname, &s))
53 {
54 SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain filesystem information: %s",
55 zbx_strerror(errno)));
56 return SYSINFO_RET_FAIL;
57 }
58
59 if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "total")) /* default parameter */
60 {
61 SET_UI64_RESULT(result, s.f_files);
62 }
63 else if (0 == strcmp(mode, "free"))
64 {
65 SET_UI64_RESULT(result, s.ZBX_FFREE);
66 }
67 else if (0 == strcmp(mode, "used"))
68 {
69 SET_UI64_RESULT(result, s.f_files - s.f_ffree);
70 }
71 else if (0 == strcmp(mode, "pfree"))
72 {
73 total = s.f_files;
74 #ifdef HAVE_SYS_STATVFS_H
75 total -= s.f_ffree - s.f_favail;
76 #endif
77 if (0 != total)
78 SET_DBL_RESULT(result, (double)(100.0 * s.ZBX_FFREE) / total);
79 else
80 {
81 SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot calculate percentage because total is zero."));
82 return SYSINFO_RET_FAIL;
83 }
84 }
85 else if (0 == strcmp(mode, "pused"))
86 {
87 total = s.f_files;
88 #ifdef HAVE_SYS_STATVFS_H
89 total -= s.f_ffree - s.f_favail;
90 #endif
91 if (0 != total)
92 {
93 SET_DBL_RESULT(result, 100.0 - (double)(100.0 * s.ZBX_FFREE) / total);
94 }
95 else
96 {
97 SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot calculate percentage because total is zero."));
98 return SYSINFO_RET_FAIL;
99 }
100 }
101 else
102 {
103 SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
104 return SYSINFO_RET_FAIL;
105 }
106
107 return SYSINFO_RET_OK;
108 }
109
VFS_FS_INODE(AGENT_REQUEST * request,AGENT_RESULT * result)110 int VFS_FS_INODE(AGENT_REQUEST *request, AGENT_RESULT *result)
111 {
112 return zbx_execute_threaded_metric(vfs_fs_inode, request, result);
113 }
114