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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * 13 Jun 91 wsak (wk0x@andrew) added mips support</span>
<a name="l00004"></a>00004 <span class="comment"> */</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="preprocessor">#include <net-snmp/net-snmp-config.h></span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="preprocessor">#ifdef NETSNMP_CAN_USE_NLIST</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00011"></a>00011 <span class="preprocessor">#if HAVE_STDLIB_H</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span>
<a name="l00013"></a>00013 <span class="preprocessor">#endif</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_UNISTD_H</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
<a name="l00016"></a>00016 <span class="preprocessor">#endif</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#include <stdio.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <errno.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#if HAVE_STRING_H</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#include <string.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#endif</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_FCNTL_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#include <fcntl.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#endif</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_NETINET_IN_H</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#include <netinet/in.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#endif</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#if HAVE_KVM_H</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#include <kvm.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#endif</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <net-snmp/net-snmp-includes.h></span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include "kernel.h"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <net-snmp/agent/ds_agent.h></span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef NULL</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define NULL 0</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="preprocessor">#if HAVE_KVM_H</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span>kvm_t *kd;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="keywordtype">void</span>
<a name="l00046"></a>00046 init_kmem(<span class="keyword">const</span> <span class="keywordtype">char</span> *file)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="preprocessor">#if HAVE_KVM_OPENFILES</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span> <span class="keywordtype">char</span> err[4096];
<a name="l00050"></a>00050 kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, err);
<a name="l00051"></a>00051 <span class="keywordflow">if</span> (kd == NULL && !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
<a name="l00052"></a>00052 NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
<a name="l00053"></a>00053 <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_CRIT, <span class="stringliteral">"init_kmem: kvm_openfiles failed: %s\n"</span>, err);
<a name="l00054"></a>00054 exit(1);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 <span class="preprocessor">#else</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span> kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL);
<a name="l00058"></a>00058 <span class="keywordflow">if</span> (!kd && !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
<a name="l00059"></a>00059 NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
<a name="l00060"></a>00060 <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_CRIT, <span class="stringliteral">"init_kmem: kvm_open failed: %s\n"</span>,
<a name="l00061"></a>00061 strerror(errno));
<a name="l00062"></a>00062 exit(1);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_KVM_OPENFILES */</span>
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="comment">/*</span>
<a name="l00069"></a>00069 <span class="comment"> * klookup:</span>
<a name="l00070"></a>00070 <span class="comment"> *</span>
<a name="l00071"></a>00071 <span class="comment"> * It seeks to the location off in kmem</span>
<a name="l00072"></a>00072 <span class="comment"> * It does a read into target of siz bytes.</span>
<a name="l00073"></a>00073 <span class="comment"> *</span>
<a name="l00074"></a>00074 <span class="comment"> * Return 0 on failure and 1 on sucess.</span>
<a name="l00075"></a>00075 <span class="comment"> *</span>
<a name="l00076"></a>00076 <span class="comment"> */</span>
<a name="l00077"></a>00077
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keywordtype">int</span>
<a name="l00080"></a>00080 klookup(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> off, <span class="keywordtype">char</span> *target, <span class="keywordtype">int</span> siz)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keywordtype">int</span> result;
<a name="l00083"></a>00083 <span class="keywordflow">if</span> (kd == NULL)
<a name="l00084"></a>00084 <span class="keywordflow">return</span> 0;
<a name="l00085"></a>00085 result = kvm_read(kd, off, target, siz);
<a name="l00086"></a>00086 <span class="keywordflow">if</span> (result != siz) {
<a name="l00087"></a>00087 <span class="preprocessor">#if HAVE_KVM_OPENFILES</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span> <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_ERR, <span class="stringliteral">"kvm_read(*, %lx, %p, %d) = %d: %s\n"</span>, off,
<a name="l00089"></a>00089 target, siz, result, kvm_geterr(kd));
<a name="l00090"></a>00090 <span class="preprocessor">#else</span>
<a name="l00091"></a>00091 <span class="preprocessor"></span> <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_ERR, <span class="stringliteral">"kvm_read(*, %lx, %p, %d) = %d: "</span>, off, target,
<a name="l00092"></a>00092 siz, result);
<a name="l00093"></a>00093 snmp_log_perror(<span class="stringliteral">"klookup"</span>);
<a name="l00094"></a>00094 <span class="preprocessor">#endif</span>
<a name="l00095"></a>00095 <span class="preprocessor"></span> <span class="keywordflow">return</span> 0;
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 <span class="keywordflow">return</span> 1;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="preprocessor">#else </span><span class="comment">/* HAVE_KVM_H */</span>
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keyword">static</span> off_t klseek(off_t);
<a name="l00103"></a>00103 <span class="keyword">static</span> <span class="keywordtype">int</span> klread(<span class="keywordtype">char</span> *, <span class="keywordtype">int</span>);
<a name="l00104"></a>00104 <span class="keywordtype">int</span> swap, mem, kmem;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordtype">void</span>
<a name="l00107"></a>00107 init_kmem(<span class="keyword">const</span> <span class="keywordtype">char</span> *file)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 kmem = open(file, O_RDONLY);
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (kmem < 0 && !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
<a name="l00111"></a>00111 NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
<a name="l00112"></a>00112 snmp_log_perror(file);
<a name="l00113"></a>00113 exit(1);
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 fcntl(kmem, F_SETFD, 1);
<a name="l00116"></a>00116 mem = open(<span class="stringliteral">"/dev/mem"</span>, O_RDONLY);
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (mem < 0 && !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
<a name="l00118"></a>00118 NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
<a name="l00119"></a>00119 snmp_log_perror(<span class="stringliteral">"/dev/mem"</span>);
<a name="l00120"></a>00120 exit(1);
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 fcntl(mem, F_SETFD, 1);
<a name="l00123"></a>00123 <span class="preprocessor">#ifdef DMEM_LOC</span>
<a name="l00124"></a>00124 <span class="preprocessor"></span> swap = open(DMEM_LOC, O_RDONLY);
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (swap < 0 && !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
<a name="l00126"></a>00126 NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
<a name="l00127"></a>00127 snmp_log_perror(DMEM_LOC);
<a name="l00128"></a>00128 exit(1);
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130 fcntl(swap, F_SETFD, 1);
<a name="l00131"></a>00131 <span class="preprocessor">#endif</span>
<a name="l00132"></a>00132 <span class="preprocessor"></span>}
<a name="l00133"></a>00133
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="comment">/*</span>
<a name="l00136"></a>00136 <span class="comment"> * Seek into the kernel for a value.</span>
<a name="l00137"></a>00137 <span class="comment"> */</span>
<a name="l00138"></a>00138 <span class="keyword">static</span> off_t
<a name="l00139"></a>00139 klseek(off_t base)
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="keywordflow">return</span> (lseek(kmem, (off_t) base, SEEK_SET));
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">/*</span>
<a name="l00146"></a>00146 <span class="comment"> * Read from the kernel </span>
<a name="l00147"></a>00147 <span class="comment"> */</span>
<a name="l00148"></a>00148 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00149"></a>00149 klread(<span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> buflen)
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151 <span class="keywordflow">return</span> (read(kmem, buf, buflen));
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment">/*</span>
<a name="l00156"></a>00156 <span class="comment"> * klookup:</span>
<a name="l00157"></a>00157 <span class="comment"> *</span>
<a name="l00158"></a>00158 <span class="comment"> * It seeks to the location off in kmem</span>
<a name="l00159"></a>00159 <span class="comment"> * It does a read into target of siz bytes.</span>
<a name="l00160"></a>00160 <span class="comment"> *</span>
<a name="l00161"></a>00161 <span class="comment"> * Return 0 on failure and 1 on sucess.</span>
<a name="l00162"></a>00162 <span class="comment"> *</span>
<a name="l00163"></a>00163 <span class="comment"> */</span>
<a name="l00164"></a>00164
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordtype">int</span>
<a name="l00167"></a>00167 klookup(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> off, <span class="keywordtype">char</span> *target, <span class="keywordtype">int</span> siz)
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="keywordtype">long</span> retsiz;
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (kmem < 0)
<a name="l00172"></a>00172 <span class="keywordflow">return</span> 0;
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordflow">if</span> ((retsiz = klseek((off_t) off)) != off) {
<a name="l00175"></a>00175 <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_ERR, <span class="stringliteral">"klookup(%lx, %p, %d): "</span>, off, target, siz);
<a name="l00176"></a>00176 snmp_log_perror(<span class="stringliteral">"klseek"</span>);
<a name="l00177"></a>00177 <span class="preprocessor">#ifdef NETSNMP_EXIT_ON_BAD_KLREAD</span>
<a name="l00178"></a>00178 <span class="preprocessor"></span> exit(1);
<a name="l00179"></a>00179 <span class="preprocessor">#endif</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span> <span class="keywordflow">return</span> (0);
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 <span class="keywordflow">if</span> ((retsiz = klread(target, siz)) != siz) {
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (snmp_get_do_debugging()) {
<a name="l00184"></a>00184 <span class="comment">/*</span>
<a name="l00185"></a>00185 <span class="comment"> * these happen too often on too many architectures to print them</span>
<a name="l00186"></a>00186 <span class="comment"> * unless we're in debugging mode. People get very full log files. </span>
<a name="l00187"></a>00187 <span class="comment"> */</span>
<a name="l00188"></a>00188 <a class="code" href="group__snmp__logging.html#ga9ba905368ea1c551b969af44b13e37c2" title="This snmp logging function allows variable argument list given the specified format and priority...">snmp_log</a>(LOG_ERR, <span class="stringliteral">"klookup(%lx, %p, %d): "</span>, off, target, siz);
<a name="l00189"></a>00189 snmp_log_perror(<span class="stringliteral">"klread"</span>);
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191 <span class="preprocessor">#ifdef NETSNMP_EXIT_ON_BAD_KLREAD</span>
<a name="l00192"></a>00192 <span class="preprocessor"></span> exit(1);
<a name="l00193"></a>00193 <span class="preprocessor">#endif</span>
<a name="l00194"></a>00194 <span class="preprocessor"></span> <span class="keywordflow">return</span> (0);
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 DEBUGMSGTL((<span class="stringliteral">"verbose:kernel:klookup"</span>, <span class="stringliteral">"klookup(%lx, %p, %d) succeeded"</span>, off, target, siz));
<a name="l00197"></a>00197 <span class="keywordflow">return</span> (1);
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_KVM_H */</span>
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="preprocessor">#endif </span><span class="comment">/* NETSNMP_CAN_USE_NLIST */</span>
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