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Commit | Line | Data |
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18fb53ea ER |
1 | This patch makes "load X Y Z" snmpsettable via snmpset, |
2 | ||
3 | it behaves the same as sysName.0, once written in snmpd.conf, it becames | |
4 | readonly. | |
5 | ||
6 | Signed-off-by: Elan Ruusamäe <glen@delfi.ee> | |
7 | Upstream-Tracker: https://sourceforge.net/tracker/?func=detail&aid=2931446&group_id=12694&atid=312694 | |
8 | ||
9 | --- net-snmp/agent/mibgroup/ucd-snmp/loadave.c 2010/07/29 14:58:47 19264 | |
10 | +++ net-snmp/agent/mibgroup/ucd-snmp/loadave.c 2010/08/11 22:07:58 19294 | |
11 | @@ -128,7 +128,19 @@ | |
12 | #include "util_funcs/header_simple_table.h" | |
13 | #include "kernel.h" | |
14 | ||
15 | -double maxload[3]; | |
16 | +static double maxload[3]; | |
17 | +static int laConfigSet = 0; | |
18 | + | |
19 | +static int | |
20 | +loadave_store_config(int a, int b, void *c, void *d) | |
21 | +{ | |
22 | + char line[SNMP_MAXBUF_SMALL]; | |
23 | + if (laConfigSet > 0) { | |
24 | + snprintf(line, SNMP_MAXBUF_SMALL, "pload %.02f %.02f %.02f", maxload[0], maxload[1], maxload[2]); | |
25 | + snmpd_store_config(line); | |
26 | + } | |
27 | + return SNMPERR_SUCCESS; | |
28 | +} | |
29 | ||
30 | void | |
31 | init_loadave(void) | |
32 | @@ -145,7 +157,7 @@ | |
33 | var_extensible_loadave, 1, {ERRORNAME}}, | |
34 | {LOADAVE, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, | |
849c236b | 35 | var_extensible_loadave, 1, {LOADAVE}}, |
18fb53ea ER |
36 | - {LOADMAXVAL, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, |
37 | + {LOADMAXVAL, ASN_OCTET_STR, NETSNMP_OLDAPI_RWRITE, | |
849c236b | 38 | var_extensible_loadave, 1, {LOADMAXVAL}}, |
18fb53ea | 39 | {LOADAVEINT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
849c236b | 40 | var_extensible_loadave, 1, {LOADAVEINT}}, |
18fb53ea ER |
41 | @@ -172,9 +184,22 @@ |
42 | REGISTER_MIB("ucd-snmp/loadave", extensible_loadave_variables, | |
43 | variable2, loadave_variables_oid); | |
44 | ||
45 | + laConfigSet = 0; | |
46 | + | |
47 | snmpd_register_config_handler("load", loadave_parse_config, | |
48 | loadave_free_config, | |
49 | "max1 [max5] [max15]"); | |
50 | + | |
51 | + snmpd_register_config_handler("pload", | |
52 | + loadave_parse_config, NULL, NULL); | |
53 | + | |
54 | + | |
55 | + /* | |
56 | + * we need to be called back later | |
57 | + */ | |
58 | + snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_STORE_DATA, | |
59 | + loadave_store_config, NULL); | |
60 | + | |
61 | } | |
62 | ||
63 | void | |
64 | @@ -182,6 +207,25 @@ | |
65 | { | |
66 | int i; | |
67 | ||
68 | + if (strcmp(token, "pload") == 0) { | |
69 | + if (laConfigSet < 0) { | |
70 | + snmp_log(LOG_WARNING, | |
71 | + "ignoring attempted override of read-only load\n"); | |
72 | + return; | |
73 | + } else { | |
74 | + laConfigSet++; | |
75 | + } | |
76 | + } else { | |
77 | + if (laConfigSet > 0) { | |
78 | + snmp_log(LOG_WARNING, | |
79 | + "ignoring attempted override of read-only load\n"); | |
80 | + /* | |
81 | + * Fall through and copy in this value. | |
82 | + */ | |
83 | + } | |
84 | + laConfigSet = -1; | |
85 | + } | |
86 | + | |
87 | for (i = 0; i <= 2; i++) { | |
88 | if (cptr != NULL) | |
89 | maxload[i] = atof(cptr); | |
90 | @@ -307,6 +351,71 @@ | |
91 | return 0; | |
92 | } | |
93 | ||
94 | +static int | |
95 | +write_laConfig(int action, | |
96 | + u_char * var_val, | |
97 | + u_char var_val_type, | |
98 | + size_t var_val_len, | |
99 | + u_char * statP, oid * name, size_t name_len) | |
100 | +{ | |
101 | + static double laConfig = 0; | |
102 | + | |
103 | + switch (action) { | |
104 | + case RESERVE1: /* Check values for acceptability */ | |
105 | + if (var_val_type != ASN_OCTET_STR) { | |
106 | + DEBUGMSGTL(("ucd-snmp/loadave", | |
107 | + "write to laConfig not ASN_OCTET_STR\n")); | |
108 | + return SNMP_ERR_WRONGTYPE; | |
109 | + } | |
110 | + if (var_val_len > 8 || var_val_len <= 0) { | |
111 | + DEBUGMSGTL(("ucd-snmp/loadave", | |
112 | + "write to laConfig: bad length\n")); | |
113 | + return SNMP_ERR_WRONGLENGTH; | |
114 | + } | |
115 | + | |
116 | + if (laConfigSet < 0) { | |
117 | + /* | |
118 | + * The object is set in a read-only configuration file. | |
119 | + */ | |
120 | + return SNMP_ERR_NOTWRITABLE; | |
121 | + } | |
122 | + break; | |
123 | + | |
124 | + case RESERVE2: /* Allocate memory and similar resources */ | |
125 | + { | |
126 | + u_char buf[8]; | |
127 | + int old_errno = errno; | |
128 | + double val; | |
129 | + char *endp; | |
130 | + | |
131 | + strncpy(buf, var_val, var_val_len); | |
132 | + buf[var_val_len] = '\0'; | |
133 | + val = strtod(buf, &endp); | |
134 | + | |
135 | + if (errno == ERANGE || *endp != '\0' || val < 0 || val > 65536.00) { | |
136 | + errno = old_errno; | |
137 | + DEBUGMSGTL(("ucd-snmp/loadave", | |
138 | + "write to laConfig: invalid value\n")); | |
139 | + return SNMP_ERR_WRONGVALUE; | |
140 | + } | |
141 | + | |
142 | + errno = old_errno; | |
143 | + | |
144 | + laConfig = val; | |
145 | + } | |
146 | + break; | |
147 | + | |
148 | + case COMMIT: | |
149 | + { | |
150 | + int idx = name[name_len - 1] - 1; | |
151 | + maxload[idx] = laConfig; | |
152 | + laConfigSet = 1; | |
153 | + } | |
154 | + } | |
155 | + | |
156 | + return SNMP_ERR_NOERROR; | |
157 | +} | |
158 | + | |
159 | u_char * | |
160 | var_extensible_loadave(struct variable * vp, | |
161 | oid * name, | |
162 | @@ -326,6 +435,10 @@ | |
163 | case MIBINDEX: | |
164 | long_ret = name[*length - 1]; | |
165 | return ((u_char *) (&long_ret)); | |
166 | + case LOADMAXVAL: | |
167 | + /* setup write method, but don't return yet */ | |
168 | + *write_method = write_laConfig; | |
169 | + break; | |
170 | case ERRORNAME: | |
171 | sprintf(errmsg, "Load-%d", ((name[*length - 1] == 1) ? 1 : | |
172 | ((name[*length - 1] == 2) ? 5 : 15))); |