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 #include "inodes.h"
24
get_fs_inode_stat(const char * fs,zbx_uint64_t * itotal,zbx_uint64_t * ifree,zbx_uint64_t * iused,double * pfree,double * pused,const char * mode,char ** error)25 int get_fs_inode_stat(const char *fs, zbx_uint64_t *itotal, zbx_uint64_t *ifree, zbx_uint64_t *iused, double *pfree,
26 double *pused, const char *mode, char **error)
27 {
28 #ifdef HAVE_SYS_STATVFS_H
29 # ifdef HAVE_SYS_STATVFS64
30 # define ZBX_STATFS statvfs64
31 # else
32 # define ZBX_STATFS statvfs
33 # endif
34 # define ZBX_FFREE f_favail
35 #else
36 # ifdef HAVE_SYS_STATFS64
37 # define ZBX_STATFS statfs64
38 # else
39 # define ZBX_STATFS statfs
40 # endif
41 # define ZBX_FFREE f_ffree
42 #endif
43 zbx_uint64_t total;
44 struct ZBX_STATFS s;
45
46 if (0 != ZBX_STATFS(fs, &s))
47 {
48 *error = zbx_dsprintf(NULL, "Cannot obtain filesystem information: %s",
49 zbx_strerror(errno));
50 return SYSINFO_RET_FAIL;
51 }
52
53 *itotal = (zbx_uint64_t)s.f_files;
54 *ifree = (zbx_uint64_t)s.ZBX_FFREE;
55 *iused = (zbx_uint64_t)(s.f_files - s.f_ffree);
56 total = s.f_files;
57 #ifdef HAVE_SYS_STATVFS_H
58 total -= s.f_ffree - s.f_favail;
59 #endif
60 if (0 != total)
61 {
62 *pfree = (100.0 * s.ZBX_FFREE) / total;
63 *pused = 100.0 - (double)(100.0 * s.ZBX_FFREE) / total;
64 }
65 else if (NULL != mode && (0 == strcmp(mode, "pfree") || 0 == strcmp(mode, "pused")))
66 {
67 *error = zbx_strdup(NULL, "Cannot calculate percentage because total is zero.");
68 return SYSINFO_RET_FAIL;
69 }
70 return SYSINFO_RET_OK;
71 }
72
vfs_fs_inode(AGENT_REQUEST * request,AGENT_RESULT * result)73 static int vfs_fs_inode(AGENT_REQUEST *request, AGENT_RESULT *result)
74 {
75 char *fsname, *mode, *error;
76 zbx_uint64_t total, free, used;
77 double pfree, pused;
78
79 if (2 < request->nparam)
80 {
81 SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
82 return SYSINFO_RET_FAIL;
83 }
84
85 fsname = get_rparam(request, 0);
86 mode = get_rparam(request, 1);
87
88 if (NULL == fsname || '\0' == *fsname)
89 {
90 SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid first parameter."));
91 return SYSINFO_RET_FAIL;
92 }
93
94 if (SYSINFO_RET_OK != get_fs_inode_stat(fsname, &total, &free, &used, &pfree, &pused, mode, &error))
95 {
96 SET_MSG_RESULT(result, error);
97 return SYSINFO_RET_FAIL;
98 }
99
100 if (NULL == mode || '\0' == *mode || 0 == strcmp(mode, "total")) /* default parameter */
101 {
102 SET_UI64_RESULT(result, total);
103 }
104 else if (0 == strcmp(mode, "free"))
105 {
106 SET_UI64_RESULT(result, free);
107 }
108 else if (0 == strcmp(mode, "used"))
109 {
110 SET_UI64_RESULT(result, used);
111 }
112 else if (0 == strcmp(mode, "pfree"))
113 {
114 SET_DBL_RESULT(result, pfree);
115 }
116 else if (0 == strcmp(mode, "pused"))
117 {
118 SET_DBL_RESULT(result, pused);
119 }
120 else
121 {
122 SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
123 return SYSINFO_RET_FAIL;
124 }
125
126 return SYSINFO_RET_OK;
127 }
128
VFS_FS_INODE(AGENT_REQUEST * request,AGENT_RESULT * result)129 int VFS_FS_INODE(AGENT_REQUEST *request, AGENT_RESULT *result)
130 {
131 return zbx_execute_threaded_metric(vfs_fs_inode, request, result);
132 }
133