appveyor: minor refactoring, clarifications
[fio.git] / os / windows / posix.c
index 9ef369e1d313af14440e7f38618afddafb8322a2..17e18a1f77edef85a6a00f5eef8ac44fcea30ec8 100755 (executable)
 #include <netinet/in.h>
 #include <windows.h>
 #include <stddef.h>
+#include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <dirent.h>
 #include <pthread.h>
+#include <time.h>
 #include <semaphore.h>
 #include <sys/shm.h>
 #include <sys/mman.h>
 #include <sys/uio.h>
 #include <sys/resource.h>
 #include <sys/poll.h>
+#include <sys/wait.h>
+#include <setjmp.h>
 
 #include "../os-windows.h"
+#include "../../lib/hweight.h"
+
+extern unsigned long mtime_since_now(struct timespec *);
+extern void fio_gettime(struct timespec *, void *);
+
+/* These aren't defined in the MinGW headers */
+HRESULT WINAPI StringCchCopyA(
+  char *pszDest,
+  size_t cchDest,
+  const char *pszSrc);
+
+HRESULT WINAPI StringCchPrintfA(
+  char *pszDest,
+  size_t cchDest,
+  const char *pszFormat,
+  ...);
+
+int win_to_posix_error(DWORD winerr)
+{
+       switch (winerr)
+       {
+       case ERROR_FILE_NOT_FOUND:              return ENOENT;
+       case ERROR_PATH_NOT_FOUND:              return ENOENT;
+       case ERROR_ACCESS_DENIED:               return EACCES;
+       case ERROR_INVALID_HANDLE:              return EBADF;
+       case ERROR_NOT_ENOUGH_MEMORY:   return ENOMEM;
+       case ERROR_INVALID_DATA:                return EINVAL;
+       case ERROR_OUTOFMEMORY:                 return ENOMEM;
+       case ERROR_INVALID_DRIVE:               return ENODEV;
+       case ERROR_NOT_SAME_DEVICE:             return EXDEV;
+       case ERROR_WRITE_PROTECT:               return EROFS;
+       case ERROR_BAD_UNIT:                    return ENODEV;
+       case ERROR_SHARING_VIOLATION:   return EACCES;
+       case ERROR_LOCK_VIOLATION:              return EACCES;
+       case ERROR_SHARING_BUFFER_EXCEEDED:     return ENOLCK;
+       case ERROR_HANDLE_DISK_FULL:    return ENOSPC;
+       case ERROR_NOT_SUPPORTED:               return ENOSYS;
+       case ERROR_FILE_EXISTS:                 return EEXIST;
+       case ERROR_CANNOT_MAKE:                 return EPERM;
+       case ERROR_INVALID_PARAMETER:   return EINVAL;
+       case ERROR_NO_PROC_SLOTS:               return EAGAIN;
+       case ERROR_BROKEN_PIPE:                 return EPIPE;
+       case ERROR_OPEN_FAILED:                 return EIO;
+       case ERROR_NO_MORE_SEARCH_HANDLES:      return ENFILE;
+       case ERROR_CALL_NOT_IMPLEMENTED:        return ENOSYS;
+       case ERROR_INVALID_NAME:                return ENOENT;
+       case ERROR_WAIT_NO_CHILDREN:    return ECHILD;
+       case ERROR_CHILD_NOT_COMPLETE:  return EBUSY;
+       case ERROR_DIR_NOT_EMPTY:               return ENOTEMPTY;
+       case ERROR_SIGNAL_REFUSED:              return EIO;
+       case ERROR_BAD_PATHNAME:                return ENOENT;
+       case ERROR_SIGNAL_PENDING:              return EBUSY;
+       case ERROR_MAX_THRDS_REACHED:   return EAGAIN;
+       case ERROR_BUSY:                                return EBUSY;
+       case ERROR_ALREADY_EXISTS:              return EEXIST;
+       case ERROR_NO_SIGNAL_SENT:              return EIO;
+       case ERROR_FILENAME_EXCED_RANGE:        return EINVAL;
+       case ERROR_META_EXPANSION_TOO_LONG:     return EINVAL;
+       case ERROR_INVALID_SIGNAL_NUMBER:       return EINVAL;
+       case ERROR_THREAD_1_INACTIVE:   return EINVAL;
+       case ERROR_BAD_PIPE:                    return EINVAL;
+       case ERROR_PIPE_BUSY:                   return EBUSY;
+       case ERROR_NO_DATA:                             return EPIPE;
+       case ERROR_MORE_DATA:                   return EAGAIN;
+       case ERROR_DIRECTORY:                   return ENOTDIR;
+       case ERROR_PIPE_CONNECTED:              return EBUSY;
+       case ERROR_NO_TOKEN:                    return EINVAL;
+       case ERROR_PROCESS_ABORTED:             return EFAULT;
+       case ERROR_BAD_DEVICE:                  return ENODEV;
+       case ERROR_BAD_USERNAME:                return EINVAL;
+       case ERROR_OPEN_FILES:                  return EAGAIN;
+       case ERROR_ACTIVE_CONNECTIONS:  return EAGAIN;
+       case ERROR_DEVICE_IN_USE:               return EAGAIN;
+       case ERROR_INVALID_AT_INTERRUPT_TIME:   return EINTR;
+       case ERROR_IO_DEVICE:                   return EIO;
+       case ERROR_NOT_OWNER:                   return EPERM;
+       case ERROR_END_OF_MEDIA:                return ENOSPC;
+       case ERROR_EOM_OVERFLOW:                return ENOSPC;
+       case ERROR_BEGINNING_OF_MEDIA:  return ESPIPE;
+       case ERROR_SETMARK_DETECTED:    return ESPIPE;
+       case ERROR_NO_DATA_DETECTED:    return ENOSPC;
+       case ERROR_POSSIBLE_DEADLOCK:   return EDEADLOCK;
+       case ERROR_CRC:                                 return EIO;
+       case ERROR_NEGATIVE_SEEK:               return EINVAL;
+       case ERROR_DISK_FULL:                   return ENOSPC;
+       case ERROR_NOACCESS:                    return EFAULT;
+       case ERROR_FILE_INVALID:                return ENXIO;
+       }
+
+       return winerr;
+}
+
+int GetNumLogicalProcessors(void)
+{
+       SYSTEM_LOGICAL_PROCESSOR_INFORMATION *processor_info = NULL;
+       DWORD len = 0;
+       DWORD num_processors = 0;
+       DWORD error = 0;
+       DWORD i;
+
+       while (!GetLogicalProcessorInformation(processor_info, &len)) {
+               error = GetLastError();
+               if (error == ERROR_INSUFFICIENT_BUFFER)
+                       processor_info = malloc(len);
+               else {
+                       log_err("Error: GetLogicalProcessorInformation failed: %d\n", error);
+                       return -1;
+               }
+
+               if (processor_info == NULL) {
+                       log_err("Error: failed to allocate memory for GetLogicalProcessorInformation");
+                       return -1;
+               }
+       }
+
+       for (i = 0; i < len / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); i++)
+       {
+               if (processor_info[i].Relationship == RelationProcessorCore)
+                       num_processors += hweight64(processor_info[i].ProcessorMask);
+       }
+
+       free(processor_info);
+       return num_processors;
+}
 
 long sysconf(int name)
 {
-       long long val = -1;
-       DWORD len;
-       SYSTEM_LOGICAL_PROCESSOR_INFORMATION processorInfo;
+       long val = -1;
+       long val2 = -1;
        SYSTEM_INFO sysInfo;
        MEMORYSTATUSEX status;
 
        switch (name)
        {
        case _SC_NPROCESSORS_ONLN:
-               len = sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
-               GetLogicalProcessorInformation(&processorInfo, &len);
-               val = len / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
+               val = GetNumLogicalProcessors();
+               if (val == -1)
+                       log_err("sysconf(_SC_NPROCESSORS_ONLN) failed\n");
+
                break;
 
        case _SC_PAGESIZE:
@@ -43,8 +171,11 @@ long sysconf(int name)
 
        case _SC_PHYS_PAGES:
                status.dwLength = sizeof(status);
-               GlobalMemoryStatusEx(&status);
-               val = status.ullTotalPhys;
+               val2 = sysconf(_SC_PAGESIZE);
+               if (GlobalMemoryStatusEx(&status) && val2 != -1)
+                       val = status.ullTotalPhys / val2;
+               else
+                       log_err("sysconf(_SC_PHYS_PAGES) failed\n");
                break;
        default:
                log_err("sysconf(%d) is not implemented\n", name);
@@ -92,11 +223,39 @@ char *dlerror(void)
        return dl_error;
 }
 
+/* Copied from http://blogs.msdn.com/b/joshpoley/archive/2007/12/19/date-time-formats-and-conversions.aspx */
+void Time_tToSystemTime(time_t dosTime, SYSTEMTIME *systemTime)
+{
+    FILETIME utcFT;
+    LONGLONG jan1970;
+       SYSTEMTIME tempSystemTime;
+
+    jan1970 = Int32x32To64(dosTime, 10000000) + 116444736000000000;
+    utcFT.dwLowDateTime = (DWORD)jan1970;
+    utcFT.dwHighDateTime = jan1970 >> 32;
+
+    FileTimeToSystemTime((FILETIME*)&utcFT, &tempSystemTime);
+       SystemTimeToTzSpecificLocalTime(NULL, &tempSystemTime, systemTime);
+}
+
+char* ctime_r(const time_t *t, char *buf)
+{
+    SYSTEMTIME systime;
+    const char * const dayOfWeek[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
+    const char * const monthOfYear[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
+
+    Time_tToSystemTime(*t, &systime);
+    /* We don't know how long `buf` is, but assume it's rounded up from the minimum of 25 to 32 */
+    StringCchPrintfA(buf, 31, "%s %s %d %02d:%02d:%02d %04d\n", dayOfWeek[systime.wDayOfWeek % 7], monthOfYear[(systime.wMonth - 1) % 12],
+                                                                                systime.wDay, systime.wHour, systime.wMinute, systime.wSecond, systime.wYear);
+    return buf;
+}
+
 int gettimeofday(struct timeval *restrict tp, void *restrict tzp)
 {
        FILETIME fileTime;
-       unsigned long long unix_time, windows_time;
-       const time_t MILLISECONDS_BETWEEN_1601_AND_1970 = 11644473600000;
+       uint64_t unix_time, windows_time;
+       const uint64_t MILLISECONDS_BETWEEN_1601_AND_1970 = 11644473600000;
 
        /* Ignore the timezone parameter */
        (void)tzp;
@@ -107,7 +266,7 @@ int gettimeofday(struct timeval *restrict tp, void *restrict tzp)
         * Its precision is 100 ns but accuracy is only one clock tick, or normally around 15 ms.
         */
        GetSystemTimeAsFileTime(&fileTime);
-       windows_time = ((unsigned long long)fileTime.dwHighDateTime << 32) + fileTime.dwLowDateTime;
+       windows_time = ((uint64_t)fileTime.dwHighDateTime << 32) + fileTime.dwLowDateTime;
        /* Divide by 10,000 to convert to ms and subtract the time between 1601 and 1970 */
        unix_time = (((windows_time)/10000) - MILLISECONDS_BETWEEN_1601_AND_1970);
        /* unix_time is now the number of milliseconds since 1970 (the Unix epoch) */
@@ -116,11 +275,6 @@ int gettimeofday(struct timeval *restrict tp, void *restrict tzp)
        return 0;
 }
 
-void syslog(int priority, const char *message, ... /* argument */)
-{
-       log_err("%s is not implemented\n", __func__);
-}
-
 int sigaction(int sig, const struct sigaction *act,
                struct sigaction *oact)
 {
@@ -146,20 +300,51 @@ void *mmap(void *addr, size_t len, int prot, int flags,
                int fildes, off_t off)
 {
        DWORD vaProt = 0;
+       DWORD mapAccess = 0;
+       DWORD lenlow;
+       DWORD lenhigh;
+       HANDLE hMap;
        void* allocAddr = NULL;
 
        if (prot & PROT_NONE)
                vaProt |= PAGE_NOACCESS;
 
-       if ((prot & PROT_READ) && !(prot & PROT_WRITE))
+       if ((prot & PROT_READ) && !(prot & PROT_WRITE)) {
                vaProt |= PAGE_READONLY;
+               mapAccess = FILE_MAP_READ;
+       }
 
-       if (prot & PROT_WRITE)
+       if (prot & PROT_WRITE) {
                vaProt |= PAGE_READWRITE;
+               mapAccess |= FILE_MAP_WRITE;
+       }
 
-       if ((flags & MAP_ANON) | (flags & MAP_ANONYMOUS))
+       lenlow = len & 0xFFFF;
+       lenhigh = len >> 16;
+       /* If the low DWORD is zero and the high DWORD is non-zero, `CreateFileMapping`
+          will return ERROR_INVALID_PARAMETER. To avoid this, set both to zero. */
+       if (lenlow == 0) {
+               lenhigh = 0;
+       }
+
+       if (flags & MAP_ANON || flags & MAP_ANONYMOUS)
        {
                allocAddr = VirtualAlloc(addr, len, MEM_COMMIT, vaProt);
+               if (allocAddr == NULL)
+                       errno = win_to_posix_error(GetLastError());
+       }
+       else
+       {
+               hMap = CreateFileMapping((HANDLE)_get_osfhandle(fildes), NULL, vaProt, lenhigh, lenlow, NULL);
+
+               if (hMap != NULL)
+               {
+                       allocAddr = MapViewOfFile(hMap, mapAccess, off >> 16, off & 0xFFFF, len);
+               }
+
+               if (hMap == NULL || allocAddr == NULL)
+                       errno = win_to_posix_error(GetLastError());
+
        }
 
        return allocAddr;
@@ -167,37 +352,83 @@ void *mmap(void *addr, size_t len, int prot, int flags,
 
 int munmap(void *addr, size_t len)
 {
-       return !VirtualFree(addr, 0, MEM_RELEASE);
+       BOOL success;
+
+       /* We may have allocated the memory with either MapViewOfFile or
+                VirtualAlloc. Therefore, try calling UnmapViewOfFile first, and if that
+                fails, call VirtualFree. */
+       success = UnmapViewOfFile(addr);
+
+       if (!success)
+       {
+               success = VirtualFree(addr, 0, MEM_RELEASE);
+       }
+
+       return !success;
+}
+
+int msync(void *addr, size_t len, int flags)
+{
+       return !FlushViewOfFile(addr, len);
 }
 
 int fork(void)
 {
        log_err("%s is not implemented\n", __func__);
        errno = ENOSYS;
-       return (-1);
+       return -1;
 }
 
 pid_t setsid(void)
 {
        log_err("%s is not implemented\n", __func__);
        errno = ENOSYS;
-       return (-1);
+       return -1;
 }
 
+static HANDLE log_file = INVALID_HANDLE_VALUE;
+
 void openlog(const char *ident, int logopt, int facility)
 {
-       log_err("%s is not implemented\n", __func__);
+       if (log_file == INVALID_HANDLE_VALUE)
+               log_file = CreateFileA("syslog.txt", GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, NULL);
 }
 
 void closelog(void)
 {
-       log_err("%s is not implemented\n", __func__);
+       CloseHandle(log_file);
+       log_file = INVALID_HANDLE_VALUE;
+}
+
+void syslog(int priority, const char *message, ... /* argument */)
+{
+       va_list v;
+       int len;
+       char *output;
+       DWORD bytes_written;
+
+       if (log_file == INVALID_HANDLE_VALUE) {
+               log_file = CreateFileA("syslog.txt", GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, NULL);
+       }
+
+       if (log_file == INVALID_HANDLE_VALUE) {
+               log_err("syslog: failed to open log file\n");
+               return;
+       }
+
+       va_start(v, message);
+       len = _vscprintf(message, v);
+       output = malloc(len + sizeof(char));
+       vsprintf(output, message, v);
+       WriteFile(log_file, output, len, &bytes_written, NULL);
+       va_end(v);
+       free(output);
 }
 
 int kill(pid_t pid, int sig)
 {
        errno = ESRCH;
-       return (-1);
+       return -1;
 }
 
 /*
@@ -218,7 +449,7 @@ int fcntl(int fildes, int cmd, ...)
                return 0;
        else if (cmd != F_SETFL) {
                errno = EINVAL;
-               return (-1);
+               return -1;
        }
 
        va_start(ap, 1);
@@ -256,6 +487,7 @@ int clock_gettime(clockid_t clock_id, struct timespec *tp)
        {
                static LARGE_INTEGER freq = {{0,0}};
                LARGE_INTEGER counts;
+               uint64_t t;
 
                QueryPerformanceCounter(&counts);
                if (freq.QuadPart == 0)
@@ -264,7 +496,7 @@ int clock_gettime(clockid_t clock_id, struct timespec *tp)
                tp->tv_sec = counts.QuadPart / freq.QuadPart;
                /* Get the difference between the number of ns stored
                 * in 'tv_sec' and that stored in 'counts' */
-               unsigned long long t = tp->tv_sec * freq.QuadPart;
+               t = tp->tv_sec * freq.QuadPart;
                t = counts.QuadPart - t;
                /* 't' now contains the number of cycles since the last second.
                 * We want the number of nanoseconds, so multiply out by 1,000,000,000
@@ -290,12 +522,42 @@ int clock_gettime(clockid_t clock_id, struct timespec *tp)
 
 int mlock(const void * addr, size_t len)
 {
-       return !VirtualLock((LPVOID)addr, len);
+       SIZE_T min, max;
+       BOOL success;
+       HANDLE process = GetCurrentProcess();
+
+       success = GetProcessWorkingSetSize(process, &min, &max);
+       if (!success) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       min += len;
+       max += len;
+       success = SetProcessWorkingSetSize(process, min, max);
+       if (!success) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       success = VirtualLock((LPVOID)addr, len);
+       if (!success) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       return 0;
 }
 
 int munlock(const void * addr, size_t len)
 {
-       return !VirtualUnlock((LPVOID)addr, len);
+       BOOL success = VirtualUnlock((LPVOID)addr, len);
+       if (!success) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       return 0;
 }
 
 pid_t waitpid(pid_t pid, int *stat_loc, int options)
@@ -321,70 +583,24 @@ char *basename(char *path)
 
        i = strlen(path) - 1;
 
-       while (name[i] != '\\' && name[i] != '/' && i >= 0)
+       while (path[i] != '\\' && path[i] != '/' && i >= 0)
                i--;
 
-       strcpy(name, path + i);
+       name[MAX_PATH - 1] = '\0';
+       strncpy(name, path + i + 1, MAX_PATH - 1);
 
        return name;
 }
 
-int posix_fallocate(int fd, off_t offset, off_t len)
-{
-       const int BUFFER_SIZE = 64*1024*1024;
-       int rc = 0;
-       char *buf;
-       unsigned int write_len;
-       unsigned int bytes_written;
-       off_t bytes_remaining = len;
-
-       if (len == 0 || offset < 0)
-               return EINVAL;
-
-       buf = malloc(BUFFER_SIZE);
-
-       if (buf == NULL)
-               return ENOMEM;
-
-       memset(buf, 0, BUFFER_SIZE);
-
-       if (lseek(fd, offset, SEEK_SET) == -1)
-               return errno;
-
-       while (bytes_remaining > 0) {
-               if (bytes_remaining < BUFFER_SIZE)
-                       write_len = (unsigned int)bytes_remaining;
-               else
-                       write_len = BUFFER_SIZE;
-
-               bytes_written = _write(fd, buf, write_len);
-               if (bytes_written == -1) {
-                       rc = errno;
-                       break;
-               }
-
-               bytes_remaining -= bytes_written;
-       }
-
-       free(buf);
-       return rc;
-}
-
-int ftruncate(int fildes, off_t length)
-{
-       BOOL bSuccess;
-       int old_pos = tell(fildes);
-       lseek(fildes, length, SEEK_SET);
-       HANDLE hFile = (HANDLE)_get_osfhandle(fildes);
-       bSuccess = SetEndOfFile(hFile);
-       lseek(fildes, old_pos, SEEK_SET);
-       return !bSuccess;
-}
-
 int fsync(int fildes)
 {
        HANDLE hFile = (HANDLE)_get_osfhandle(fildes);
-       return !FlushFileBuffers(hFile);
+       if (!FlushFileBuffers(hFile)) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       return 0;
 }
 
 int nFileMappings = 0;
@@ -393,7 +609,9 @@ HANDLE fileMappings[1024];
 int shmget(key_t key, size_t size, int shmflg)
 {
        int mapid = -1;
-       HANDLE hMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, (PAGE_EXECUTE_READWRITE | SEC_RESERVE), size >> 32, size & 0xFFFFFFFF, NULL);
+       uint32_t size_low = size & 0xFFFFFFFF;
+       uint32_t size_high = ((uint64_t)size) >> 32;
+       HANDLE hMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, (PAGE_EXECUTE_READWRITE | SEC_RESERVE), size_high, size_low, NULL);
        if (hMapping != NULL) {
                fileMappings[nFileMappings] = hMapping;
                mapid = nFileMappings;
@@ -410,14 +628,33 @@ void *shmat(int shmid, const void *shmaddr, int shmflg)
        void* mapAddr;
        MEMORY_BASIC_INFORMATION memInfo;
        mapAddr = MapViewOfFile(fileMappings[shmid], FILE_MAP_ALL_ACCESS, 0, 0, 0);
-       VirtualQuery(mapAddr, &memInfo, sizeof(memInfo));
+       if (mapAddr == NULL) {
+               errno = win_to_posix_error(GetLastError());
+               return (void*)-1;
+       }
+
+       if (VirtualQuery(mapAddr, &memInfo, sizeof(memInfo)) == 0) {
+               errno = win_to_posix_error(GetLastError());
+               return (void*)-1;
+       }
+
        mapAddr = VirtualAlloc(mapAddr, memInfo.RegionSize, MEM_COMMIT, PAGE_READWRITE);
+       if (mapAddr == NULL) {
+               errno = win_to_posix_error(GetLastError());
+               return (void*)-1;
+       }
+
        return mapAddr;
 }
 
 int shmdt(const void *shmaddr)
 {
-       return !UnmapViewOfFile(shmaddr);
+       if (!UnmapViewOfFile(shmaddr)) {
+               errno = win_to_posix_error(GetLastError());
+               return -1;
+       }
+
+       return 0;
 }
 
 int shmctl(int shmid, int cmd, struct shmid_ds *buf)
@@ -428,51 +665,71 @@ int shmctl(int shmid, int cmd, struct shmid_ds *buf)
        } else {
                log_err("%s is not implemented\n", __func__);
        }
-       return (-1);
+       errno = ENOSYS;
+       return -1;
 }
 
 int setuid(uid_t uid)
 {
        log_err("%s is not implemented\n", __func__);
        errno = ENOSYS;
-       return (-1);
+       return -1;
 }
 
 int setgid(gid_t gid)
 {
        log_err("%s is not implemented\n", __func__);
        errno = ENOSYS;
-       return (-1);
+       return -1;
 }
 
 int nice(int incr)
 {
-       if (incr != 0) {
-               errno = EINVAL;
-               return -1;
-       }
+       DWORD prioclass = NORMAL_PRIORITY_CLASS;
+       
+       if (incr < -15)
+               prioclass = HIGH_PRIORITY_CLASS;
+       else if (incr < 0)
+               prioclass = ABOVE_NORMAL_PRIORITY_CLASS;
+       else if (incr > 15)
+               prioclass = IDLE_PRIORITY_CLASS;
+       else if (incr > 0)
+               prioclass = BELOW_NORMAL_PRIORITY_CLASS;
+       
+       if (!SetPriorityClass(GetCurrentProcess(), prioclass))
+               log_err("fio: SetPriorityClass failed\n");
 
        return 0;
 }
 
 int getrusage(int who, struct rusage *r_usage)
 {
-       const time_t SECONDS_BETWEEN_1601_AND_1970 = 11644473600;
+       const uint64_t SECONDS_BETWEEN_1601_AND_1970 = 11644473600;
        FILETIME cTime, eTime, kTime, uTime;
        time_t time;
+       HANDLE h;
 
        memset(r_usage, 0, sizeof(*r_usage));
 
-       HANDLE hProcess = GetCurrentProcess();
-       GetProcessTimes(hProcess, &cTime, &eTime, &kTime, &uTime);
-       time = ((unsigned long long)uTime.dwHighDateTime << 32) + uTime.dwLowDateTime;
+       if (who == RUSAGE_SELF) {
+               h = GetCurrentProcess();
+               GetProcessTimes(h, &cTime, &eTime, &kTime, &uTime);
+       } else if (who == RUSAGE_THREAD) {
+               h = GetCurrentThread();
+               GetThreadTimes(h, &cTime, &eTime, &kTime, &uTime);
+       } else {
+               log_err("fio: getrusage %d is not implemented\n", who);
+               return -1;
+       }
+
+       time = ((uint64_t)uTime.dwHighDateTime << 32) + uTime.dwLowDateTime;
        /* Divide by 10,000,000 to get the number of seconds and move the epoch from
         * 1601 to 1970 */
        time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970);
        r_usage->ru_utime.tv_sec = time;
        /* getrusage() doesn't care about anything other than seconds, so set tv_usec to 0 */
        r_usage->ru_utime.tv_usec = 0;
-       time = ((unsigned long long)kTime.dwHighDateTime << 32) + kTime.dwLowDateTime;
+       time = ((uint64_t)kTime.dwHighDateTime << 32) + kTime.dwLowDateTime;
        /* Divide by 10,000,000 to get the number of seconds and move the epoch from
         * 1601 to 1970 */
        time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970);
@@ -483,18 +740,9 @@ int getrusage(int who, struct rusage *r_usage)
 
 int posix_madvise(void *addr, size_t len, int advice)
 {
-       log_err("%s is not implemented\n", __func__);
        return ENOSYS;
 }
 
-/* Windows doesn't support advice for memory pages. Just ignore it. */
-int msync(void *addr, size_t len, int flags)
-{
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return -1;
-}
-
 int fdatasync(int fildes)
 {
        return fsync(fildes);
@@ -503,17 +751,17 @@ int fdatasync(int fildes)
 ssize_t pwrite(int fildes, const void *buf, size_t nbyte,
                off_t offset)
 {
-       long pos = tell(fildes);
-       ssize_t len = write(fildes, buf, nbyte);
-       lseek(fildes, pos, SEEK_SET);
+       int64_t pos = _telli64(fildes);
+       ssize_t len = _write(fildes, buf, nbyte);
+       _lseeki64(fildes, pos, SEEK_SET);
        return len;
 }
 
 ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset)
 {
-       long pos = tell(fildes);
+       int64_t pos = _telli64(fildes);
        ssize_t len = read(fildes, buf, nbyte);
-       lseek(fildes, pos, SEEK_SET);
+       _lseeki64(fildes, pos, SEEK_SET);
        return len;
 }
 
@@ -521,14 +769,27 @@ ssize_t readv(int fildes, const struct iovec *iov, int iovcnt)
 {
        log_err("%s is not implemented\n", __func__);
        errno = ENOSYS;
-       return (-1);
+       return -1;
 }
 
 ssize_t writev(int fildes, const struct iovec *iov, int iovcnt)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return (-1);
+       int i;
+       DWORD bytes_written = 0;
+       for (i = 0; i < iovcnt; i++)
+       {
+               int len = send((SOCKET)fildes, iov[i].iov_base, iov[i].iov_len, 0);
+               if (len == SOCKET_ERROR)
+               {
+                       DWORD err = GetLastError();
+                       errno = win_to_posix_error(err);
+                       bytes_written = -1;
+                       break;
+               }
+               bytes_written += len;
+       }
+
+       return bytes_written;
 }
 
 long long strtoll(const char *restrict str, char **restrict endptr,
@@ -537,39 +798,6 @@ long long strtoll(const char *restrict str, char **restrict endptr,
        return _strtoi64(str, endptr, base);
 }
 
-char *strsep(char **stringp, const char *delim)
-{
-       char *orig = *stringp;
-       BOOL gotMatch = FALSE;
-       int i = 0;
-       int j = 0;
-
-       if (*stringp == NULL)
-               return NULL;
-
-       while ((*stringp)[i] != '\0') {
-               j = 0;
-               while (delim[j] != '\0') {
-                       if ((*stringp)[i] == delim[j]) {
-                               gotMatch = TRUE;
-                               (*stringp)[i] = '\0';
-                               *stringp = *stringp + i + 1;
-                               break;
-                       }
-                       j++;
-               }
-               if (gotMatch)
-                       break;
-
-               i++;
-       }
-
-       if (!gotMatch)
-               *stringp = NULL;
-
-       return orig;
-}
-
 int poll(struct pollfd fds[], nfds_t nfds, int timeout)
 {
        struct timeval tv;
@@ -578,11 +806,11 @@ int poll(struct pollfd fds[], nfds_t nfds, int timeout)
        int i;
        int rc;
 
-       if (timeout != -1)
+       if (timeout != -1) {
                to = &tv;
-
-       to->tv_sec = timeout / 1000;
-       to->tv_usec = (timeout % 1000) * 1000;
+               to->tv_sec = timeout / 1000;
+               to->tv_usec = (timeout % 1000) * 1000;
+       }
 
        FD_ZERO(&readfds);
        FD_ZERO(&writefds);
@@ -603,7 +831,6 @@ int poll(struct pollfd fds[], nfds_t nfds, int timeout)
 
                FD_SET(fds[i].fd, &exceptfds);
        }
-
        rc = select(nfds, &readfds, &writefds, &exceptfds, to);
 
        if (rc != SOCKET_ERROR) {
@@ -623,36 +850,98 @@ int poll(struct pollfd fds[], nfds_t nfds, int timeout)
                                fds[i].revents |= POLLHUP;
                }
        }
-
        return rc;
 }
 
 int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return -1;
+       struct timespec tv;
+       DWORD ms_remaining;
+       DWORD ms_total = (rqtp->tv_sec * 1000) + (rqtp->tv_nsec / 1000000.0);
+
+       if (ms_total == 0)
+               ms_total = 1;
+
+       ms_remaining = ms_total;
+
+       /* Since Sleep() can sleep for less than the requested time, add a loop to
+          ensure we only return after the requested length of time has elapsed */
+       do {
+               fio_gettime(&tv, NULL);
+               Sleep(ms_remaining);
+               ms_remaining = ms_total - mtime_since_now(&tv);
+       } while (ms_remaining > 0 && ms_remaining < ms_total);
+
+       /* this implementation will never sleep for less than the requested time */
+       if (rmtp != NULL) {
+               rmtp->tv_sec = 0;
+               rmtp->tv_nsec = 0;
+       }
+
+       return 0;
 }
 
 DIR *opendir(const char *dirname)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return NULL;
+       struct dirent_ctx *dc = NULL;
+
+       /* See if we can open it. If not, we'll return an error here */
+       HANDLE file = CreateFileA(dirname, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+       if (file != INVALID_HANDLE_VALUE) {
+               CloseHandle(file);
+               dc = (struct dirent_ctx*)malloc(sizeof(struct dirent_ctx));
+               StringCchCopyA(dc->dirname, MAX_PATH, dirname);
+               dc->find_handle = INVALID_HANDLE_VALUE;
+       } else {
+               DWORD error = GetLastError();
+               if (error == ERROR_FILE_NOT_FOUND)
+                       errno = ENOENT;
+
+               else if (error == ERROR_PATH_NOT_FOUND)
+                       errno = ENOTDIR;
+               else if (error == ERROR_TOO_MANY_OPEN_FILES)
+                       errno = ENFILE;
+               else if (error == ERROR_ACCESS_DENIED)
+                       errno = EACCES;
+               else
+                       errno = error;
+       }
+
+       return dc;
 }
 
 int closedir(DIR *dirp)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return -1;
+       if (dirp != NULL && dirp->find_handle != INVALID_HANDLE_VALUE)
+               FindClose(dirp->find_handle);
+
+       free(dirp);
+       return 0;
 }
 
 struct dirent *readdir(DIR *dirp)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return NULL;
+       static struct dirent de;
+       WIN32_FIND_DATA find_data;
+
+       if (dirp == NULL)
+               return NULL;
+
+       if (dirp->find_handle == INVALID_HANDLE_VALUE) {
+               char search_pattern[MAX_PATH];
+               StringCchPrintfA(search_pattern, MAX_PATH-1, "%s\\*", dirp->dirname);
+               dirp->find_handle = FindFirstFileA(search_pattern, &find_data);
+               if (dirp->find_handle == INVALID_HANDLE_VALUE)
+                       return NULL;
+       } else {
+               if (!FindNextFile(dirp->find_handle, &find_data))
+                       return NULL;
+       }
+
+       StringCchCopyA(de.d_name, MAX_PATH, find_data.cFileName);
+       de.d_ino = 0;
+
+       return &de;
 }
 
 uid_t geteuid(void)
@@ -662,11 +951,12 @@ uid_t geteuid(void)
        return -1;
 }
 
-int inet_aton(char *addr)
+in_addr_t inet_network(const char *cp)
 {
-       log_err("%s is not implemented\n", __func__);
-       errno = ENOSYS;
-       return 0;
+       in_addr_t hbo;
+       in_addr_t nbo = inet_addr(cp);
+       hbo = ((nbo & 0xFF) << 24) + ((nbo & 0xFF00) << 8) + ((nbo & 0xFF0000) >> 8) + ((nbo & 0xFF000000) >> 24);
+       return hbo;
 }
 
 const char* inet_ntop(int af, const void *restrict src,
@@ -705,6 +995,7 @@ const char* inet_ntop(int af, const void *restrict src,
                errno = ENOSPC;
 
        WSACleanup();
+
        return ret;
 }