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/*
* swrun_cygwin.c:
* hrSWRunTable data access:
* Cygwin interface
*/
#include <net-snmp/net-snmp-config.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <windows.h>
#include <sys/cygwin.h>
#include <tlhelp32.h>
#include <psapi.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/library/container.h>
#include <net-snmp/library/snmp_debug.h>
#include <net-snmp/data_access/swrun.h>
#include <net-snmp/data_access/swrun.h>
/*
* a lot of this is "stolen" from cygwin ps.cc
*/
typedef BOOL(WINAPI * ENUMPROCESSMODULES) (HANDLE hProcess,
HMODULE * lphModule,
DWORD cb,
LPDWORD lpcbNeeded);
typedef DWORD(WINAPI * GETMODULEFILENAME) (HANDLE hProcess,
HMODULE hModule,
LPTSTR lpstrFIleName,
DWORD nSize);
typedef DWORD(WINAPI * GETPROCESSMEMORYINFO) (HANDLE hProcess,
PPROCESS_MEMORY_COUNTERS
pmc, DWORD nSize);
typedef HANDLE(WINAPI * CREATESNAPSHOT) (DWORD dwFlags,
DWORD th32ProcessID);
typedef BOOL(WINAPI * PROCESSWALK) (HANDLE hSnapshot,
LPPROCESSENTRY32 lppe);
ENUMPROCESSMODULES myEnumProcessModules;
GETMODULEFILENAME myGetModuleFileNameEx;
CREATESNAPSHOT myCreateToolhelp32Snapshot;
PROCESSWALK myProcess32First;
PROCESSWALK myProcess32Next;
GETPROCESSMEMORYINFO myGetProcessMemoryInfo = NULL;
cygwin_getinfo_types query = CW_GETPINFO;
static BOOL WINAPI
dummyprocessmodules(HANDLE hProcess,
HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded)
{
lphModule[0] = (HMODULE) * lpcbNeeded;
*lpcbNeeded = 1;
return 1;
}
static DWORD WINAPI
GetModuleFileNameEx95(HANDLE hProcess,
HMODULE hModule, LPTSTR lpstrFileName, DWORD n)
{
HANDLE h;
DWORD pid = (DWORD) hModule;
PROCESSENTRY32 proc;
h = myCreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (!h)
return 0;
proc.dwSize = sizeof(proc);
if (myProcess32First(h, &proc))
do
if (proc.th32ProcessID == pid) {
CloseHandle(h);
strcpy(lpstrFileName, proc.szExeFile);
return 1;
}
while (myProcess32Next(h, &proc));
CloseHandle(h);
return 0;
}
#define FACTOR (0x19db1ded53ea710LL)
#define NSPERSEC 10000000LL
#define NSPERMSEC 10000LL
static time_t __stdcall
to_time_t(PFILETIME ptr)
{
long rem;
long long x =
((long long) ptr->dwHighDateTime << 32) +
((unsigned) ptr->dwLowDateTime);
x -= FACTOR;
rem = x % NSPERSEC;
rem += NSPERSEC / 2;
x /= NSPERSEC;
x += rem / NSPERSEC;
return x;
}
static long
to_msec(PFILETIME ptr)
{
long long x =
((long long) ptr->dwHighDateTime << 32) +
(unsigned) ptr->dwLowDateTime;
x /= NSPERMSEC;
return x;
}
OSVERSIONINFO ver;
HMODULE h;
/* ---------------------------------------------------------------------
*/
void
netsnmp_arch_swrun_init(void)
{
memset(&ver, 0, sizeof ver);
ver.dwOSVersionInfoSize = sizeof ver;
GetVersionEx(&ver);
if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
h = LoadLibrary("psapi.dll");
if (h) {
myEnumProcessModules = (ENUMPROCESSMODULES)
GetProcAddress(h, "EnumProcessModules");
myGetModuleFileNameEx = (GETMODULEFILENAME)
GetProcAddress(h, "GetModuleFileNameExA");
myGetProcessMemoryInfo = (GETPROCESSMEMORYINFO)
GetProcAddress(h, "GetProcessMemoryInfo");
if (myEnumProcessModules && myGetModuleFileNameEx)
query = CW_GETPINFO_FULL;
else
snmp_log(LOG_ERR, "hr_swrun failed NT init\n");
} else
snmp_log(LOG_ERR, "hr_swrun failed to load psapi.dll\n");
} else {
h = GetModuleHandle("KERNEL32.DLL");
myCreateToolhelp32Snapshot = (CREATESNAPSHOT)
GetProcAddress(h, "CreateToolhelp32Snapshot");
myProcess32First = (PROCESSWALK) GetProcAddress(h, "Process32First");
myProcess32Next = (PROCESSWALK) GetProcAddress(h, "Process32Next");
myEnumProcessModules = dummyprocessmodules;
myGetModuleFileNameEx = GetModuleFileNameEx95;
if (myCreateToolhelp32Snapshot && myProcess32First
&& myProcess32Next)
#if 0
/*
* This doesn't work after all on Win98 SE
*/
query = CW_GETPINFO_FULL;
#else
query = CW_GETPINFO;
#endif
else
snmp_log(LOG_ERR, "hr_swrun failed non-NT init\n");
}
return;
}
/* ---------------------------------------------------------------------
*/
int
netsnmp_arch_swrun_container_load( netsnmp_container *container, u_int flags)
{
struct external_pinfo *curproc;
pid_t curpid = 0;
DWORD n;
HANDLE h;
FILETIME ct, et, kt, ut;
PROCESS_MEMORY_COUNTERS pmc;
char *cp1, *cp2;
netsnmp_swrun_entry *entry;
cygwin_internal(CW_LOCK_PINFO, 1000);
while (curproc = (struct external_pinfo *)
cygwin_internal(query, curpid | CW_NEXTPID)) {
curpid = curproc->pid;
if (( PID_EXITED & curproc.process_state ) ||
( ~0xffff & curproc.exitcode ))
continue;
entry = netsnmp_swrun_entry_create(curpid);
if (NULL == entry)
continue; /* error already logged by function */
rc = CONTAINER_INSERT(container, entry);
n = lowproc.dwProcessId & 0xffff;
h = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, n);
if (curproc.ppid) {
entry->hrSWRunPath_len = snprintf(entry->hrSWRunPath,
sizeof(entry->hrSWRunPath)-1, "%s",
cygwin_conv_to_posix_path(curproc.progname));
} else if (query == CW_GETPINFO_FULL) {
if (h) {
HMODULE hm[1000];
if (!myEnumProcessModules(h, hm, sizeof hm, &n))
n = 0;
if (n && myGetModuleFileNameEx(h, hm[0], string,
sizeof string)) {
entry->hrSWRunPath_len = snprintf(entry->hrSWRunPath,
sizeof(entry->hrSWRunPath)-1,
"%s", string );
}
}
}
/*
* Set hrSWRunName to be the last component of hrSWRunPath,
* but without any file extension
*/
if ( entry->hrSWRunPath_len ) {
cp1 = strrchr( entry->hrSWRunPath, '.' );
if ( cp1 )
*cp1 = '\0'; /* Mask the file extension */
cp2 = strrchr( entry->hrSWRunPath, '/' );
if (cp2)
cp2++; /* Find the final component ... */
else
cp2 = entry->hrSWRunPath; /* ... if any */
entry->hrSWRunName_len = snprintf(entry->hrSWRunName,
sizeof(entry->hrSWRunName)-1, "%s", cp2);
if ( cp1 )
*cp1 = '.'; /* Restore the file extension */
}
/*
* XXX - No information regarding process arguments
* XXX - No information regarding system processes vs applications
*/
if (PID_STOPPED & curproc.process_state ) {
entry->hrSWRunStatus = HRSWRUNSTATUS_NOTRUNNABLE;
}
/* else if (PID_ZOMBIE & curproc.process_state ) */
else if ( ~0xffff & curproc.exitcode )
{
entry->hrSWRunStatus = HRSWRUNSTATUS_INVALID;
} else {
/* entry->hrSWRunStatus = HRSWRUNSTATUS_RUNNABLE; ?? */
entry->hrSWRunStatus = HRSWRUNSTATUS_RUNNING;
}
if (h) {
if (GetProcessTimes(h, &ct, &et, &kt, &ut))
entry->hrSWRunPerfCPU = (to_msec(&kt) + to_msec(&ut)) / 10;
if (myGetProcessMemoryInfo
&& myGetProcessMemoryInfo(h, &pmc, sizeof pmc))
entry->hrSWRunPerfMem = pmc.WorkingSetSize / 1024;
CloseHandle(h);
}
}
cygwin_internal(CW_UNLOCK_PINFO);
DEBUGMSGTL(("swrun:load:arch"," loaded %d entries\n",
CONTAINER_SIZE(container)));
return 0;
}
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