1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/hardware/memory.h>
#include <unistd.h>
#include <errno.h>
#include <sys/sysctl.h>
#if HAVE_SYS_VMMETER_H
#include <sys/vmmeter.h>
#endif
#include <sys/swap.h>
#if defined(HAVE_UVM_UVM_PARAM_H) && defined(HAVE_UVM_UVM_EXTERN_H)
#include <uvm/uvm_param.h>
#include <uvm/uvm_extern.h>
#elif defined(HAVE_VM_VM_PARAM_H) && defined(HAVE_VM_VM_EXTERN_H)
#include <vm/vm_param.h>
#include <vm/vm_extern.h>
#else
#error memory_netbsd1.c: Is this really a NetBSD system?
#endif
#ifdef SWAP_NSWAP
void swapinfo(long);
#endif
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
long pagesize;
struct uvmexp uvmexp;
size_t uvmexp_size = sizeof(uvmexp);
struct vmtotal total;
size_t total_size = sizeof(total);
quad_t phys_mem;
quad_t user_mem;
size_t mem_size = sizeof(phys_mem);
#if defined(openbsd)
int phys_mem_mib[] = { CTL_HW, HW_PHYSMEM64 };
int user_mem_mib[] = { CTL_HW, HW_USERMEM64 };
int uvmexp_mib[] = { CTL_VM, VM_UVMEXP };
int total_mib[] = { CTL_VM, VM_METER };
#else
unsigned int bufspace;
unsigned int maxbufspace;
size_t buf_size = sizeof(bufspace);
#endif
/*
* Retrieve the memory information from the underlying O/S...
*/
#if defined(openbsd)
sysctl(uvmexp_mib, 2, &uvmexp, &uvmexp_size, NULL, 0);
sysctl(total_mib, 2, &total, &total_size, NULL, 0);
sysctl(phys_mem_mib, 2, &phys_mem, &mem_size, NULL, 0);
sysctl(user_mem_mib, 2, &user_mem, &mem_size, NULL, 0);
#else
if (sysctlbyname("vm.uvmexp", &uvmexp, &uvmexp_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.uvmexp failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.vmmeter", &total, &total_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.vmmeter failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("hw.physmem64", &phys_mem, &mem_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl hw.physmem64 failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("hw.usermem64", &user_mem, &mem_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl hw.usermem64 failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.bufmem", &bufspace, &buf_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.bufmem failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.bufmem_hiwater", &maxbufspace, &buf_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.bufmem_hiwater failed (errno %d)\n", errno);
return -1;
}
#endif
pagesize = sysconf(_SC_PAGESIZE);
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesize;
mem->size = phys_mem/pagesize;
mem->free = total.t_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_USERMEM, 1 );
if (!mem) {
snmp_log_perror("No (user) Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Real memory");
mem->units = pagesize;
mem->size = user_mem/pagesize;
mem->free = uvmexp.free;
}
#if 1
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesize;
mem->size = total.t_vm;
mem->free = total.t_avm;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED, 1 );
if (!mem) {
snmp_log_perror("No Shared Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared virtual memory");
mem->units = pagesize;
mem->size = total.t_vmshr;
mem->free = total.t_avmshr;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED2, 1 );
if (!mem) {
snmp_log_perror("No Shared2 Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared real memory");
mem->units = pagesize;
mem->size = total.t_rmshr;
mem->free = total.t_armshr;
}
#endif
#ifdef SWAP_NSWAP
swapinfo(pagesize);
#endif
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = pagesize;
mem->size = uvmexp.swpages;
mem->free = uvmexp.swpages - uvmexp.swpginuse;
mem->other = -1;
}
#if defined(__NetBSD__)
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MBUF, 1 );
if (!mem) {
snmp_log_perror("No Buffer, etc info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Memory buffers");
mem->units = 1024;
mem->size = maxbufspace /1024;
mem->size = (maxbufspace - bufspace)/1024;
}
#endif
return 0;
}
#ifdef SWAP_NSWAP
/*
* If there are multiple swap devices, record
* the statistics for each one individually.
*/
void
swapinfo(long pagesize)
{
int i, n;
struct swapent *s;
netsnmp_memory_info *mem;
char buf[1024];
/*
* If there's only one swap device, don't bother
*/
n = swapctl( SWAP_NSWAP, NULL, 0 );
if ( n <= 1 )
return;
s = (struct swapent*)calloc(n, sizeof(struct swapent));
swapctl( SWAP_STATS, s, n );
for (i = 0; i < n; ++i) {
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP+1+i, 1 );
if (!mem)
continue;
if (!mem->descr) {
/* sprintf(buf, "swap #%d", s[i].se_dev); */
sprintf(buf, "swap %s", s[i].se_path);
mem->descr = strdup( buf );
}
mem->units = pagesize;
mem->size = s[i].se_nblks;
mem->free = s[i].se_nblks - s[i].se_inuse;
mem->other = -1;
}
}
#endif
|
