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newlib/winsup/cygwin/fhandler_proc.cc

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/* fhandler_proc.cc: fhandler for /proc virtual filesystem
Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include "miscfuncs.h"
#include <unistd.h>
#include <stdlib.h>
#include "cygerrno.h"
#include "security.h"
#include "path.h"
#include "fhandler.h"
#include "fhandler_virtual.h"
#include "pinfo.h"
#include "dtable.h"
#include "cygheap.h"
#include "tls_pbuf.h"
#include <sys/utsname.h>
#include <sys/param.h>
#include "ntdll.h"
#include <ctype.h>
#include <winioctl.h>
#include <wchar.h>
#include "cpuid.h"
#include "mount.h"
#define _COMPILING_NEWLIB
#include <dirent.h>
static _off64_t format_proc_loadavg (void *, char *&);
static _off64_t format_proc_meminfo (void *, char *&);
static _off64_t format_proc_stat (void *, char *&);
static _off64_t format_proc_version (void *, char *&);
static _off64_t format_proc_uptime (void *, char *&);
static _off64_t format_proc_cpuinfo (void *, char *&);
static _off64_t format_proc_partitions (void *, char *&);
static _off64_t format_proc_self (void *, char *&);
static _off64_t format_proc_mounts (void *, char *&);
static _off64_t format_proc_filesystems (void *, char *&);
/* names of objects in /proc */
static const virt_tab_t proc_tab[] = {
{ _VN ("."), FH_PROC, virt_directory, NULL },
{ _VN (".."), FH_PROC, virt_directory, NULL },
{ _VN ("cpuinfo"), FH_PROC, virt_file, format_proc_cpuinfo },
{ _VN ("filesystems"), FH_PROC, virt_file, format_proc_filesystems },
{ _VN ("loadavg"), FH_PROC, virt_file, format_proc_loadavg },
{ _VN ("meminfo"), FH_PROC, virt_file, format_proc_meminfo },
{ _VN ("mounts"), FH_PROC, virt_symlink, format_proc_mounts },
{ _VN ("net"), FH_PROCNET, virt_directory, NULL },
{ _VN ("partitions"), FH_PROC, virt_file, format_proc_partitions },
{ _VN ("registry"), FH_REGISTRY, virt_directory, NULL },
{ _VN ("registry32"), FH_REGISTRY, virt_directory, NULL },
{ _VN ("registry64"), FH_REGISTRY, virt_directory, NULL },
{ _VN ("self"), FH_PROC, virt_symlink, format_proc_self },
{ _VN ("stat"), FH_PROC, virt_file, format_proc_stat },
{ _VN ("sys"), FH_PROCSYS, virt_directory, NULL },
{ _VN ("uptime"), FH_PROC, virt_file, format_proc_uptime },
{ _VN ("version"), FH_PROC, virt_file, format_proc_version },
{ NULL, 0, 0, virt_none, NULL }
};
#define PROC_DIR_COUNT 4
static const int PROC_LINK_COUNT = (sizeof (proc_tab) / sizeof (virt_tab_t)) - 1;
/* name of the /proc filesystem */
const char proc[] = "/proc";
const size_t proc_len = sizeof (proc) - 1;
/* bsearch compare function. */
static int
proc_tab_cmp (const void *key, const void *memb)
{
int ret = strncmp (((virt_tab_t *) key)->name, ((virt_tab_t *) memb)->name,
((virt_tab_t *) memb)->name_len);
if (!ret && ((virt_tab_t *) key)->name[((virt_tab_t *) memb)->name_len] != '\0' && ((virt_tab_t *) key)->name[((virt_tab_t *) memb)->name_len] != '/')
return 1;
return ret;
}
/* Helper function to perform a binary search of the incoming pathname
against the alpha-sorted virtual file table. */
virt_tab_t *
virt_tab_search (const char *path, bool prefix, const virt_tab_t *table,
size_t nelem)
{
virt_tab_t key = { path, 0, 0, virt_none, NULL };
virt_tab_t *entry = (virt_tab_t *) bsearch (&key, table, nelem,
sizeof (virt_tab_t),
proc_tab_cmp);
if (entry && (path[entry->name_len] == '\0'
|| (prefix && path[entry->name_len] == '/')))
return entry;
return NULL;
}
/* Auxillary function that returns the fhandler associated with the given
path. */
DWORD
fhandler_proc::get_proc_fhandler (const char *path)
{
debug_printf ("get_proc_fhandler(%s)", path);
path += proc_len;
/* Since this method is called from path_conv::check we can't rely on
it being normalised and therefore the path may have runs of slashes
in it. */
while (isdirsep (*path))
path++;
/* Check if this is the root of the virtual filesystem (i.e. /proc). */
if (*path == 0)
return FH_PROC;
virt_tab_t *entry = virt_tab_search (path, true, proc_tab,
PROC_LINK_COUNT);
if (entry)
return entry->fhandler;
if (pinfo (atoi (path)))
return FH_PROCESS;
bool has_subdir = false;
while (*path)
if (isdirsep (*path++))
{
has_subdir = true;
break;
}
if (has_subdir)
/* The user is trying to access a non-existent subdirectory of /proc. */
return FH_BAD;
else
/* Return FH_PROC so that we can return EROFS if the user is trying to
create a file. */
return FH_PROC;
}
/* Returns 0 if path doesn't exist, >0 if path is a directory,
-1 if path is a file, -2 if it's a symlink. */
virtual_ftype_t
fhandler_proc::exists ()
{
const char *path = get_name ();
debug_printf ("exists (%s)", path);
path += proc_len;
if (*path == 0)
return virt_rootdir;
virt_tab_t *entry = virt_tab_search (path + 1, false, proc_tab,
PROC_LINK_COUNT);
if (entry)
{
fileid = entry - proc_tab;
return entry->type;
}
return virt_none;
}
fhandler_proc::fhandler_proc ():
fhandler_virtual ()
{
}
int
fhandler_proc::fstat (struct __stat64 *buf)
{
const char *path = get_name ();
debug_printf ("fstat (%s)", path);
path += proc_len;
fhandler_base::fstat (buf);
buf->st_mode &= ~_IFMT & NO_W;
if (!*path)
{
winpids pids ((DWORD) 0);
buf->st_ino = 2;
buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
buf->st_nlink = PROC_DIR_COUNT + 2 + pids.npids;
return 0;
}
else
{
virt_tab_t *entry = virt_tab_search (path + 1, false, proc_tab,
PROC_LINK_COUNT);
if (entry)
{
if (entry->type == virt_directory)
buf->st_mode |= S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
else if (entry->type == virt_symlink)
buf->st_mode = S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
else
{
buf->st_mode &= NO_X;
buf->st_mode |= S_IFREG;
}
return 0;
}
}
set_errno (ENOENT);
return -1;
}
int
fhandler_proc::readdir (DIR *dir, dirent *de)
{
int res;
if (dir->__d_position < PROC_LINK_COUNT)
{
strcpy (de->d_name, proc_tab[dir->__d_position++].name);
dir->__flags |= dirent_saw_dot | dirent_saw_dot_dot;
res = 0;
}
else
{
winpids pids ((DWORD) 0);
int found = 0;
res = ENMFILE;
for (unsigned i = 0; i < pids.npids; i++)
if (found++ == dir->__d_position - PROC_LINK_COUNT)
{
__small_sprintf (de->d_name, "%d", pids[i]->pid);
dir->__d_position++;
res = 0;
break;
}
}
syscall_printf ("%d = readdir (%p, %p) (%s)", res, dir, de, de->d_name);
return res;
}
int
fhandler_proc::open (int flags, mode_t mode)
{
int proc_file_no = -1;
int res = fhandler_virtual::open (flags, mode);
if (!res)
goto out;
nohandle (true);
const char *path;
path = get_name () + proc_len;
if (!*path)
{
if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
{
set_errno (EEXIST);
res = 0;
goto out;
}
else if (flags & O_WRONLY)
{
set_errno (EISDIR);
res = 0;
goto out;
}
else
{
flags |= O_DIROPEN;
goto success;
}
}
proc_file_no = -1;
for (int i = 0; proc_tab[i].name; i++)
if (path_prefix_p (proc_tab[i].name, path + 1, strlen (proc_tab[i].name),
false))
{
proc_file_no = i;
if (proc_tab[i].fhandler != FH_PROC)
{
if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
{
set_errno (EEXIST);
res = 0;
goto out;
}
else if (flags & O_WRONLY)
{
set_errno (EISDIR);
res = 0;
goto out;
}
else
{
flags |= O_DIROPEN;
goto success;
}
}
}
if (proc_file_no == -1)
{
if (flags & O_CREAT)
{
set_errno (EROFS);
res = 0;
goto out;
}
else
{
set_errno (ENOENT);
res = 0;
goto out;
}
}
if (flags & O_WRONLY)
{
set_errno (EROFS);
res = 0;
goto out;
}
fileid = proc_file_no;
if (!fill_filebuf ())
{
res = 0;
goto out;
}
if (flags & O_APPEND)
position = filesize;
else
position = 0;
success:
res = 1;
set_flags ((flags & ~O_TEXT) | O_BINARY);
set_open_status ();
out:
syscall_printf ("%d = fhandler_proc::open (%p, %d)", res, flags, mode);
return res;
}
bool
fhandler_proc::fill_filebuf ()
{
if (fileid < PROC_LINK_COUNT && proc_tab[fileid].format_func)
{
filesize = proc_tab[fileid].format_func (NULL, filebuf);
return true;
}
return false;
}
static _off64_t
format_proc_version (void *, char *&destbuf)
{
struct utsname uts_name;
uname (&uts_name);
destbuf = (char *) crealloc_abort (destbuf, strlen (uts_name.sysname)
+ strlen (uts_name.release)
+ strlen (uts_name.version)
+ 4);
return __small_sprintf (destbuf, "%s %s %s\n",
uts_name.sysname, uts_name.release, uts_name.version);
}
static _off64_t
format_proc_loadavg (void *, char *&destbuf)
{
destbuf = (char *) crealloc_abort (destbuf, 16);
return __small_sprintf (destbuf, "%u.%02u %u.%02u %u.%02u\n",
0, 0, 0, 0, 0, 0);
}
static _off64_t
format_proc_meminfo (void *, char *&destbuf)
{
unsigned long mem_total = 0UL, mem_free = 0UL, swap_total = 0UL,
swap_free = 0UL;
MEMORYSTATUS memory_status;
GlobalMemoryStatus (&memory_status);
mem_total = memory_status.dwTotalPhys;
mem_free = memory_status.dwAvailPhys;
PSYSTEM_PAGEFILE_INFORMATION spi = NULL;
ULONG size = 512;
NTSTATUS ret = STATUS_SUCCESS;
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (size);
if (spi)
{
ret = NtQuerySystemInformation (SystemPagefileInformation, (PVOID) spi,
size, &size);
if (ret == STATUS_INFO_LENGTH_MISMATCH)
{
free (spi);
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (size);
if (spi)
ret = NtQuerySystemInformation (SystemPagefileInformation,
(PVOID) spi, size, &size);
}
}
if (!spi || ret || (!ret && GetLastError () == ERROR_PROC_NOT_FOUND))
{
swap_total = memory_status.dwTotalPageFile - mem_total;
swap_free = memory_status.dwAvailPageFile - mem_total;
}
else
{
PSYSTEM_PAGEFILE_INFORMATION spp = spi;
do
{
swap_total += spp->CurrentSize * getsystempagesize ();
swap_free += (spp->CurrentSize - spp->TotalUsed)
* getsystempagesize ();
}
while (spp->NextEntryOffset
&& (spp = (PSYSTEM_PAGEFILE_INFORMATION)
((char *) spp + spp->NextEntryOffset)));
}
if (spi)
free (spi);
destbuf = (char *) crealloc_abort (destbuf, 512);
return __small_sprintf (destbuf, " total: used: free:\n"
"Mem: %10lu %10lu %10lu\n"
"Swap: %10lu %10lu %10lu\n"
"MemTotal: %10lu kB\n"
"MemFree: %10lu kB\n"
"MemShared: 0 kB\n"
"HighTotal: 0 kB\n"
"HighFree: 0 kB\n"
"LowTotal: %10lu kB\n"
"LowFree: %10lu kB\n"
"SwapTotal: %10lu kB\n"
"SwapFree: %10lu kB\n",
mem_total, mem_total - mem_free, mem_free,
swap_total, swap_total - swap_free, swap_free,
mem_total >> 10, mem_free >> 10,
mem_total >> 10, mem_free >> 10,
swap_total >> 10, swap_free >> 10);
}
static _off64_t
format_proc_uptime (void *, char *&destbuf)
{
unsigned long long uptime = 0ULL, idle_time = 0ULL;
NTSTATUS ret;
SYSTEM_TIME_OF_DAY_INFORMATION stodi;
/* Sizeof SYSTEM_PERFORMANCE_INFORMATION on 64 bit systems. It
appears to contain some trailing additional information from
what I can tell after examining the content.
FIXME: It would be nice if this could be verified somehow. */
const size_t sizeof_spi = sizeof (SYSTEM_PERFORMANCE_INFORMATION) + 16;
PSYSTEM_PERFORMANCE_INFORMATION spi = (PSYSTEM_PERFORMANCE_INFORMATION)
alloca (sizeof_spi);
if (!system_info.dwNumberOfProcessors)
GetSystemInfo (&system_info);
ret = NtQuerySystemInformation (SystemTimeOfDayInformation, &stodi,
sizeof stodi, NULL);
if (NT_SUCCESS (ret))
uptime = (stodi.CurrentTime.QuadPart - stodi.BootTime.QuadPart) / 100000ULL;
else
debug_printf ("NtQuerySystemInformation(SystemTimeOfDayInformation), "
"status %p", ret);
if (NT_SUCCESS (NtQuerySystemInformation (SystemPerformanceInformation,
spi, sizeof_spi, NULL)))
idle_time = (spi->IdleTime.QuadPart / system_info.dwNumberOfProcessors)
/ 100000ULL;
destbuf = (char *) crealloc_abort (destbuf, 80);
return __small_sprintf (destbuf, "%U.%02u %U.%02u\n",
uptime / 100, long (uptime % 100),
idle_time / 100, long (idle_time % 100));
}
static _off64_t
format_proc_stat (void *, char *&destbuf)
{
unsigned long pages_in = 0UL, pages_out = 0UL, interrupt_count = 0UL,
context_switches = 0UL, swap_in = 0UL, swap_out = 0UL;
time_t boot_time = 0;
NTSTATUS ret;
/* Sizeof SYSTEM_PERFORMANCE_INFORMATION on 64 bit systems. It
appears to contain some trailing additional information from
what I can tell after examining the content.
FIXME: It would be nice if this could be verified somehow. */
const size_t sizeof_spi = sizeof (SYSTEM_PERFORMANCE_INFORMATION) + 16;
PSYSTEM_PERFORMANCE_INFORMATION spi = (PSYSTEM_PERFORMANCE_INFORMATION)
alloca (sizeof_spi);
SYSTEM_TIME_OF_DAY_INFORMATION stodi;
tmp_pathbuf tp;
char *buf = tp.c_get ();
char *eobuf = buf;
if (!system_info.dwNumberOfProcessors)
GetSystemInfo (&system_info);
SYSTEM_PROCESSOR_TIMES spt[system_info.dwNumberOfProcessors];
ret = NtQuerySystemInformation (SystemProcessorTimes, (PVOID) spt,
sizeof spt[0] * system_info.dwNumberOfProcessors, NULL);
if (!NT_SUCCESS (ret))
debug_printf ("NtQuerySystemInformation(SystemProcessorTimes), "
"status %p", ret);
else
{
unsigned long long user_time = 0ULL, kernel_time = 0ULL, idle_time = 0ULL;
for (unsigned long i = 0; i < system_info.dwNumberOfProcessors; i++)
{
kernel_time += (spt[i].KernelTime.QuadPart - spt[i].IdleTime.QuadPart)
* HZ / 10000000ULL;
user_time += spt[i].UserTime.QuadPart * HZ / 10000000ULL;
idle_time += spt[i].IdleTime.QuadPart * HZ / 10000000ULL;
}
eobuf += __small_sprintf (eobuf, "cpu %U %U %U %U\n",
user_time, 0ULL, kernel_time, idle_time);
user_time = 0ULL, kernel_time = 0ULL, idle_time = 0ULL;
for (unsigned long i = 0; i < system_info.dwNumberOfProcessors; i++)
{
interrupt_count += spt[i].InterruptCount;
kernel_time = (spt[i].KernelTime.QuadPart - spt[i].IdleTime.QuadPart) * HZ / 10000000ULL;
user_time = spt[i].UserTime.QuadPart * HZ / 10000000ULL;
idle_time = spt[i].IdleTime.QuadPart * HZ / 10000000ULL;
eobuf += __small_sprintf (eobuf, "cpu%d %U %U %U %U\n", i,
user_time, 0ULL, kernel_time, idle_time);
}
ret = NtQuerySystemInformation (SystemPerformanceInformation,
(PVOID) spi, sizeof_spi, NULL);
if (!NT_SUCCESS (ret))
{
debug_printf ("NtQuerySystemInformation(SystemPerformanceInformation)"
", status %p", ret);
memset (spi, 0, sizeof_spi);
}
ret = NtQuerySystemInformation (SystemTimeOfDayInformation,
(PVOID) &stodi,
sizeof stodi, NULL);
if (!NT_SUCCESS (ret))
debug_printf ("NtQuerySystemInformation(SystemTimeOfDayInformation), "
"status %p", ret);
}
if (!NT_SUCCESS (ret))
return 0;
pages_in = spi->PagesRead;
pages_out = spi->PagefilePagesWritten + spi->MappedFilePagesWritten;
/*
* Note: there is no distinction made in this structure between pages
* read from the page file and pages read from mapped files, but there
* is such a distinction made when it comes to writing. Goodness knows
* why. The value of swap_in, then, will obviously be wrong but its our
* best guess.
*/
swap_in = spi->PagesRead;
swap_out = spi->PagefilePagesWritten;
context_switches = spi->ContextSwitches;
boot_time = to_time_t ((FILETIME *) &stodi.BootTime.QuadPart);
eobuf += __small_sprintf (eobuf, "page %u %u\n"
"swap %u %u\n"
"intr %u\n"
"ctxt %u\n"
"btime %u\n",
pages_in, pages_out,
swap_in, swap_out,
interrupt_count,
context_switches,
boot_time);
destbuf = (char *) crealloc_abort (destbuf, eobuf - buf);
memcpy (destbuf, buf, eobuf - buf);
return eobuf - buf;
}
#define read_value(x,y) \
do {\
dwCount = BUFSIZE; \
if ((dwError = RegQueryValueEx (hKey, x, NULL, &dwType, in_buf.b, &dwCount)), \
(dwError != ERROR_SUCCESS && dwError != ERROR_MORE_DATA)) \
{ \
debug_printf ("RegQueryValueEx failed retcode %d", dwError); \
return 0; \
} \
if (dwType != y) \
{ \
debug_printf ("Value %s had an unexpected type (expected %d, found %d)", y, dwType); \
return 0; \
}\
} while (0)
#define print(x) \
do { \
strcpy (bufptr, x), \
bufptr += sizeof (x) - 1; \
} while (0)
static _off64_t
format_proc_cpuinfo (void *, char *&destbuf)
{
SYSTEM_INFO siSystemInfo;
HKEY hKey;
DWORD dwError, dwCount, dwType;
DWORD dwOldThreadAffinityMask;
int cpu_number;
const int BUFSIZE = 256;
union
{
BYTE b[BUFSIZE];
char s[BUFSIZE];
DWORD d;
unsigned m[13];
} in_buf;
tmp_pathbuf tp;
char *buf = tp.c_get ();
char *bufptr = buf;
GetSystemInfo (&siSystemInfo);
for (cpu_number = 0; ; cpu_number++)
{
if (cpu_number)
print ("\n");
__small_sprintf (in_buf.s, "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\%d", cpu_number);
if ((dwError = RegOpenKeyEx (HKEY_LOCAL_MACHINE, in_buf.s, 0, KEY_QUERY_VALUE, &hKey)) != ERROR_SUCCESS)
{
if (dwError == ERROR_FILE_NOT_FOUND)
break;
debug_printf ("RegOpenKeyEx failed retcode %d", dwError);
return 0;
}
dwOldThreadAffinityMask = SetThreadAffinityMask (GetCurrentThread (), 1 << cpu_number);
if (dwOldThreadAffinityMask == 0)
debug_printf ("SetThreadAffinityMask failed %E");
// I'm not sure whether the thread changes processor immediately
// and I'm not sure whether this function will cause the thread to be rescheduled
yield ();
bool has_cpuid = false;
if (!can_set_flag (0x00040000))
debug_printf ("386 processor - no cpuid");
else
{
debug_printf ("486 processor");
if (can_set_flag (0x00200000))
{
debug_printf ("processor supports CPUID instruction");
has_cpuid = true;
}
else
debug_printf ("processor does not support CPUID instruction");
}
if (!has_cpuid)
{
bufptr += __small_sprintf (bufptr, "processor : %d\n", cpu_number);
read_value ("VendorIdentifier", REG_SZ);
bufptr += __small_sprintf (bufptr, "vendor_id : %s\n", in_buf.s);
read_value ("Identifier", REG_SZ);
bufptr += __small_sprintf (bufptr, "identifier : %s\n", in_buf.s);
read_value ("~Mhz", REG_DWORD);
bufptr += __small_sprintf (bufptr, "cpu MHz : %u\n", in_buf.d);
print ("flags :");
if (IsProcessorFeaturePresent (PF_3DNOW_INSTRUCTIONS_AVAILABLE))
print (" 3dnow");
if (IsProcessorFeaturePresent (PF_COMPARE_EXCHANGE_DOUBLE))
print (" cx8");
if (!IsProcessorFeaturePresent (PF_FLOATING_POINT_EMULATED))
print (" fpu");
if (IsProcessorFeaturePresent (PF_MMX_INSTRUCTIONS_AVAILABLE))
print (" mmx");
if (IsProcessorFeaturePresent (PF_PAE_ENABLED))
print (" pae");
if (IsProcessorFeaturePresent (PF_RDTSC_INSTRUCTION_AVAILABLE))
print (" tsc");
if (IsProcessorFeaturePresent (PF_XMMI_INSTRUCTIONS_AVAILABLE))
print (" sse");
if (IsProcessorFeaturePresent (PF_XMMI64_INSTRUCTIONS_AVAILABLE))
print (" sse2");
}
else
{
bufptr += __small_sprintf (bufptr, "processor\t: %d\n", cpu_number);
unsigned maxf, vendor_id[4], unused;
cpuid (&maxf, &vendor_id[0], &vendor_id[2], &vendor_id[1], 0);
maxf &= 0xffff;
vendor_id[3] = 0;
// vendor identification
bool is_amd = false, is_intel = false;
if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
is_amd = true;
else if (!strcmp ((char*)vendor_id, "GenuineIntel"))
is_intel = true;
bufptr += __small_sprintf (bufptr, "vendor_id\t: %s\n",
(char *)vendor_id);
read_value ("~Mhz", REG_DWORD);
unsigned cpu_mhz = in_buf.d;
if (maxf >= 1)
{
unsigned features2, features1, extra_info, cpuid_sig;
cpuid (&cpuid_sig, &extra_info, &features2, &features1, 1);
/* unsigned extended_family = (cpuid_sig & 0x0ff00000) >> 20,
extended_model = (cpuid_sig & 0x000f0000) >> 16,
type = (cpuid_sig & 0x00003000) >> 12; */
unsigned family = (cpuid_sig & 0x00000f00) >> 8,
model = (cpuid_sig & 0x000000f0) >> 4,
stepping = cpuid_sig & 0x0000000f;
/* Not printed on Linux */
//unsigned brand_id = extra_info & 0x0000000f;
//unsigned cpu_count = (extra_info & 0x00ff0000) >> 16;
unsigned apic_id = (extra_info & 0xff000000) >> 24;
if (family == 15)
family += (cpuid_sig >> 20) & 0xff;
if (family >= 6)
model += ((cpuid_sig >> 16) & 0x0f) << 4;
unsigned maxe = 0;
cpuid (&maxe, &unused, &unused, &unused, 0x80000000);
if (maxe >= 0x80000004)
{
cpuid (&in_buf.m[0], &in_buf.m[1], &in_buf.m[2],
&in_buf.m[3], 0x80000002);
cpuid (&in_buf.m[4], &in_buf.m[5], &in_buf.m[6],
&in_buf.m[7], 0x80000003);
cpuid (&in_buf.m[8], &in_buf.m[9], &in_buf.m[10],
&in_buf.m[11], 0x80000004);
in_buf.m[12] = 0;
}
else
{
// could implement a lookup table here if someone needs it
strcpy (in_buf.s, "unknown");
}
int cache_size = -1,
tlb_size = -1,
clflush = 64,
cache_alignment = 64;
if (features1 & (1 << 19)) // CLFSH
clflush = ((extra_info >> 8) & 0xff) << 3;
if (is_intel && family == 15)
cache_alignment = clflush * 2;
if (maxe >= 0x80000005) // L1 Cache and TLB Identifiers
{
unsigned data_cache, inst_cache;
cpuid (&unused, &unused, &data_cache, &inst_cache,
0x80000005);
cache_size = (inst_cache >> 24) + (data_cache >> 24);
tlb_size = 0;
}
if (maxe >= 0x80000006) // L2 Cache and L2 TLB Identifiers
{
unsigned tlb, l2;
cpuid (&unused, &tlb, &l2, &unused, 0x80000006);
cache_size = l2 >> 16;
tlb_size = ((tlb >> 16) & 0xfff) + (tlb & 0xfff);
}
bufptr += __small_sprintf (bufptr, "cpu family\t: %d\n"
"model\t\t: %d\n"
"model name\t: %s\n"
"stepping\t: %d\n"
"cpu MHz\t\t: %d\n",
family,
model,
in_buf.s + strspn (in_buf.s, " "),
stepping,
cpu_mhz);
if (cache_size >= 0)
bufptr += __small_sprintf (bufptr, "cache size\t: %d KB\n",
cache_size);
// Recognize multi-core CPUs
if (is_amd && maxe >= 0x80000008)
{
unsigned core_info;
cpuid (&unused, &unused, &core_info, &unused, 0x80000008);
int max_cores = 1 + (core_info & 0xff);
if (max_cores > 1)
{
int shift = (core_info >> 12) & 0x0f;
if (!shift)
while ((1 << shift) < max_cores)
++shift;
int core_id = apic_id & ((1 << shift) - 1);
apic_id >>= shift;
bufptr += __small_sprintf (bufptr, "physical id\t: %d\n"
"core id\t\t: %d\n"
"cpu cores\t: %d\n",
apic_id, core_id, max_cores);
}
}
// Recognize Intel Hyper-Transport CPUs
else if (is_intel && (features1 & (1 << 28)) && maxf >= 4)
{
/* TODO */
}
bufptr += __small_sprintf (bufptr, "fpu\t\t: %s\n"
"fpu_exception\t: %s\n"
"cpuid level\t: %d\n"
"wp\t\t: yes\n",
(features1 & (1 << 0)) ? "yes" : "no",
(features1 & (1 << 0)) ? "yes" : "no",
maxf);
print ("flags\t\t:");
if (features1 & (1 << 0))
print (" fpu");
if (features1 & (1 << 1))
print (" vme");
if (features1 & (1 << 2))
print (" de");
if (features1 & (1 << 3))
print (" pse");
if (features1 & (1 << 4))
print (" tsc");
if (features1 & (1 << 5))
print (" msr");
if (features1 & (1 << 6))
print (" pae");
if (features1 & (1 << 7))
print (" mce");
if (features1 & (1 << 8))
print (" cx8");
if (features1 & (1 << 9))
print (" apic");
if (features1 & (1 << 11))
print (" sep");
if (features1 & (1 << 12))
print (" mtrr");
if (features1 & (1 << 13))
print (" pge");
if (features1 & (1 << 14))
print (" mca");
if (features1 & (1 << 15))
print (" cmov");
if (features1 & (1 << 16))
print (" pat");
if (features1 & (1 << 17))
print (" pse36");
if (features1 & (1 << 18))
print (" pn");
if (features1 & (1 << 19))
print (" clflush");
if (is_intel && features1 & (1 << 21))
print (" dts");
if (is_intel && features1 & (1 << 22))
print (" acpi");
if (features1 & (1 << 23))
print (" mmx");
if (features1 & (1 << 24))
print (" fxsr");
if (features1 & (1 << 25))
print (" sse");
if (features1 & (1 << 26))
print (" sse2");
if (is_intel && (features1 & (1 << 27)))
print (" ss");
if (features1 & (1 << 28))
print (" ht");
if (is_intel)
{
if (features1 & (1 << 29))
print (" tm");
if (features1 & (1 << 30))
print (" ia64");
if (features1 & (1 << 31))
print (" pbe");
}
if (is_amd && maxe >= 0x80000001)
{
unsigned features;
cpuid (&unused, &unused, &unused, &features, 0x80000001);
if (features & (1 << 11))
print (" syscall");
if (features & (1 << 19)) // Huh? Not in AMD64 specs.
print (" mp");
if (features & (1 << 20))
print (" nx");
if (features & (1 << 22))
print (" mmxext");
if (features & (1 << 25))
print (" fxsr_opt");
if (features & (1 << 26))
print (" pdpe1gb");
if (features & (1 << 27))
print (" rdtscp");
if (features & (1 << 29))
print (" lm");
if (features & (1 << 30)) // 31th bit is on
print (" 3dnowext");
if (features & (1 << 31)) // 32th bit (highest) is on
print (" 3dnow");
}
if (features2 & (1 << 0))
print (" pni");
if (is_intel)
{
if (features2 & (1 << 2))
print (" dtes64");
if (features2 & (1 << 3))
print (" monitor");
if (features2 & (1 << 4))
print (" ds_cpl");
if (features2 & (1 << 5))
print (" vmx");
if (features2 & (1 << 6))
print (" smx");
if (features2 & (1 << 7))
print (" est");
if (features2 & (1 << 8))
print (" tm2");
if (features2 & (1 << 9))
print (" ssse3");
if (features2 & (1 << 10))
print (" cid");
if (features2 & (1 << 12))
print (" fma");
}
if (features2 & (1 << 13))
print (" cx16");
if (is_intel)
{
if (features2 & (1 << 14))
print (" xtpr");
if (features2 & (1 << 15))
print (" pdcm");
if (features2 & (1 << 18))
print (" dca");
if (features2 & (1 << 19))
print (" sse4_1");
if (features2 & (1 << 20))
print (" sse4_2");
if (features2 & (1 << 21))
print (" x2apic");
if (features2 & (1 << 22))
print (" movbe");
if (features2 & (1 << 23))
print (" popcnt");
if (features2 & (1 << 25))
print (" aes");
if (features2 & (1 << 26))
print (" xsave");
if (features2 & (1 << 27))
print (" osxsave");
if (features2 & (1 << 28))
print (" avx");
}
if (maxe >= 0x80000001)
{
unsigned features;
cpuid (&unused, &unused, &features, &unused, 0x80000001);
if (features & (1 << 0))
print (" lahf_lm");
if (features & (1 << 1))
print (" cmp_legacy");
if (is_amd)
{
if (features & (1 << 2))
print (" svm");
if (features & (1 << 3))
print (" extapic");
if (features & (1 << 4))
print (" cr8_legacy");
if (features & (1 << 5))
print (" abm");
if (features & (1 << 6))
print (" sse4a");
if (features & (1 << 7))
print (" misalignsse");
if (features & (1 << 8))
print (" 3dnowprefetch");
if (features & (1 << 9))
print (" osvw");
}
if (features & (1 << 10))
print (" ibs");
if (is_amd)
{
if (features & (1 << 11))
print (" sse5");
if (features & (1 << 12))
print (" skinit");
if (features & (1 << 13))
print (" wdt");
}
}
print ("\n");
/* TODO: bogomips */
if (tlb_size >= 0)
bufptr += __small_sprintf (bufptr,
"TLB size\t: %d 4K pages\n",
tlb_size);
bufptr += __small_sprintf (bufptr, "clflush size\t: %d\n"
"cache_alignment\t: %d\n",
clflush,
cache_alignment);
if (maxe >= 0x80000008) // Address size
{
unsigned addr_size, phys, virt;
cpuid (&addr_size, &unused, &unused, &unused, 0x80000008);
phys = addr_size & 0xff;
virt = (addr_size >> 8) & 0xff;
/* Fix an errata on Intel CPUs */
if (is_intel && family == 15 && model == 3 && stepping == 4)
phys = 36;
bufptr += __small_sprintf (bufptr, "address sizes\t: "
"%u bits physical, "
"%u bits virtual\n",
phys, virt);
}
if (maxe >= 0x80000007) // advanced power management
{
cpuid (&unused, &unused, &unused, &features2, 0x80000007);
print ("power management:");
if (features2 & (1 << 0))
print (" ts");
if (features2 & (1 << 1))
print (" fid");
if (features2 & (1 << 2))
print (" vid");
if (features2 & (1 << 3))
print (" ttp");
if (features2 & (1 << 4))
print (" tm");
if (features2 & (1 << 5))
print (" stc");
if (features2 & (1 << 6))
print (" 100mhzsteps");
if (features2 & (1 << 7))
print (" hwpstate");
}
}
else
{
bufptr += __small_sprintf (bufptr, "cpu MHz : %d\n"
"fpu : %s\n",
cpu_mhz,
IsProcessorFeaturePresent (PF_FLOATING_POINT_EMULATED) ? "no" : "yes");
}
}
if (dwOldThreadAffinityMask != 0)
SetThreadAffinityMask (GetCurrentThread (), dwOldThreadAffinityMask);
RegCloseKey (hKey);
bufptr += __small_sprintf (bufptr, "\n");
}
destbuf = (char *) crealloc_abort (destbuf, bufptr - buf);
memcpy (destbuf, buf, bufptr - buf);
return bufptr - buf;
}
#undef read_value
static _off64_t
format_proc_partitions (void *, char *&destbuf)
{
char devname[NAME_MAX + 1];
OBJECT_ATTRIBUTES attr;
HANDLE dirhdl, devhdl;
IO_STATUS_BLOCK io;
NTSTATUS status;
tmp_pathbuf tp;
char *buf = tp.c_get ();
char *bufptr = buf;
/* Open \Device object directory. */
wchar_t wpath[MAX_PATH] = L"\\Device";
UNICODE_STRING upath = {14, 16, wpath};
InitializeObjectAttributes (&attr, &upath, OBJ_CASE_INSENSITIVE, NULL, NULL);
status = NtOpenDirectoryObject (&dirhdl, DIRECTORY_QUERY, &attr);
if (!NT_SUCCESS (status))
{
debug_printf ("NtOpenDirectoryObject, status %p", status);
return 0;
}
print ("major minor #blocks name\n\n");
/* Traverse \Device directory ... */
PDIRECTORY_BASIC_INFORMATION dbi = (PDIRECTORY_BASIC_INFORMATION)
alloca (640);
BOOLEAN restart = TRUE;
ULONG context = 0;
while (NT_SUCCESS (NtQueryDirectoryObject (dirhdl, dbi, 640, TRUE, restart,
&context, NULL)))
{
restart = FALSE;
sys_wcstombs (devname, NAME_MAX + 1, dbi->ObjectName.Buffer,
dbi->ObjectName.Length / 2);
/* ... and check for a "Harddisk[0-9]*" entry. */
if (!strncasematch (devname, "Harddisk", 8)
|| dbi->ObjectName.Length < 18
|| !isdigit (devname[8]))
continue;
/* Construct path name for partitions, starting with 0, which is the
whole disk, and try to open.
Note that the correct way to do this would be to open the HarddiskX
directory and enumerate the Partition entries. However, while the
partition entries itself are accessible for query by everyone, the
HarddiskX parent directory is only queryable by SYSTEM and Admins.
This way we circumvent this nonsensical restriction. Let's assume
we never have more than 99 partitions per disk for now... */
for (int part_num = 0; part_num < 99; ++part_num)
{
wcscpy (wpath, dbi->ObjectName.Buffer);
__small_swprintf (wpath + dbi->ObjectName.Length / 2,
L"\\Partition%d", part_num);
upath.Length = 22 + dbi->ObjectName.Length;
upath.MaximumLength = upath.Length + 2;
InitializeObjectAttributes (&attr, &upath, OBJ_CASE_INSENSITIVE,
dirhdl, NULL);
status = NtOpenFile (&devhdl, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS, 0);
if (!NT_SUCCESS (status))
{
if (status == STATUS_OBJECT_NAME_NOT_FOUND
|| status == STATUS_OBJECT_PATH_NOT_FOUND)
break;
debug_printf ("NtOpenFile(%s), status %p", devname, status);
continue;
}
/* Use a buffer since some ioctl buffers aren't fixed size. */
char buf[256];
PARTITION_INFORMATION *pi = NULL;
PARTITION_INFORMATION_EX *pix = NULL;
DISK_GEOMETRY *dg = NULL;
DWORD bytes;
unsigned long drive_number = strtoul (devname + 8, NULL, 10);
unsigned long long size;
if (wincap.has_disk_ex_ioctls ()
&& DeviceIoControl (devhdl, IOCTL_DISK_GET_PARTITION_INFO_EX,
NULL, 0, buf, 256, &bytes, NULL))
{
pix = (PARTITION_INFORMATION_EX *) buf;
size = pix->PartitionLength.QuadPart;
}
else if (DeviceIoControl (devhdl, IOCTL_DISK_GET_PARTITION_INFO,
NULL, 0, buf, 256, &bytes, NULL))
{
pi = (PARTITION_INFORMATION *) buf;
size = pi->PartitionLength.QuadPart;
}
else if (DeviceIoControl (devhdl, IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL, 0, buf, 256, &bytes, NULL))
{
dg = (DISK_GEOMETRY *) buf;
size = (unsigned long long) dg->Cylinders.QuadPart
* dg->TracksPerCylinder
* dg->SectorsPerTrack
* dg->BytesPerSector;
}
else
size = 0;
if (!pi && !pix && !dg)
debug_printf ("DeviceIoControl %E");
else
{
device dev;
dev.parsedisk (drive_number, part_num);
bufptr += __small_sprintf (bufptr, "%5d %5d %9U %s\n",
dev.major, dev.minor,
size >> 10, dev.name + 5);
}
NtClose (devhdl);
}
}
NtClose (dirhdl);
destbuf = (char *) crealloc_abort (destbuf, bufptr - buf);
memcpy (destbuf, buf, bufptr - buf);
return bufptr - buf;
}
static _off64_t
format_proc_self (void *, char *&destbuf)
{
destbuf = (char *) crealloc_abort (destbuf, 16);
return __small_sprintf (destbuf, "%d", getpid ());
}
static _off64_t
format_proc_mounts (void *, char *&destbuf)
{
destbuf = (char *) crealloc_abort (destbuf, sizeof ("self/mounts"));
return __small_sprintf (destbuf, "self/mounts");
}
static _off64_t
format_proc_filesystems (void *, char *&destbuf)
{
tmp_pathbuf tp;
char *buf = tp.c_get ();
char *bufptr = buf;
/* start at 1 to skip type "none" */
for (int i = 1; fs_names[i].name; i++)
bufptr += __small_sprintf(bufptr, "%s\t%s\n",
fs_names[i].block_device ? "" : "nodev",
fs_names[i].name);
destbuf = (char *) crealloc_abort (destbuf, bufptr - buf);
memcpy (destbuf, buf, bufptr - buf);
return bufptr - buf;
}
#undef print
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