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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, 2011 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 <winioctl.h>
#include <wchar.h>
#include <wctype.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);
if (filesize > 0)
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)
{
extern int get_process_state (DWORD dwProcessId);
unsigned running = 0;
winpids pids ((DWORD) 0);
for (unsigned i = 0; i < pids.npids; i++)
switch (get_process_state (i)) {
case 'O':
case 'R':
running++;
break;
}
destbuf = (char *) crealloc_abort (destbuf, 16);
return __small_sprintf (destbuf, "%u.%02u %u.%02u %u.%02u %u/%u\n",
0, 0, 0, 0, 0, 0, running, pids.npids);
}
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))
{
__seterrno_from_nt_status (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)
{
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE dirhdl;
tmp_pathbuf tp;
char *buf = tp.c_get ();
char *bufptr = buf;
char *ioctl_buf = tp.c_get ();
/* 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);
__seterrno_from_nt_status (status);
return 0;
}
/* Traverse \Device directory ... */
PDIRECTORY_BASIC_INFORMATION dbi = (PDIRECTORY_BASIC_INFORMATION)
alloca (640);
BOOLEAN restart = TRUE;
bool got_one = false;
ULONG context = 0;
while (NT_SUCCESS (NtQueryDirectoryObject (dirhdl, dbi, 640, TRUE, restart,
&context, NULL)))
{
HANDLE devhdl;
PARTITION_INFORMATION_EX *pix = NULL;
PARTITION_INFORMATION *pi = NULL;
DWORD bytes_read;
DWORD part_cnt = 0;
unsigned long long size;
device dev;
restart = FALSE;
/* ... and check for a "Harddisk[0-9]*" entry. */
if (dbi->ObjectName.Length < 18
|| wcsncasecmp (dbi->ObjectName.Buffer, L"Harddisk", 8) != 0
|| !iswdigit (dbi->ObjectName.Buffer[8]))
continue;
/* Got it. Now construct the path to the entire disk, which is
"\\Device\\HarddiskX\\Partition0", and open the disk with
minimum permssions. */
unsigned long drive_num = wcstoul (dbi->ObjectName.Buffer + 8, NULL, 10);
wcscpy (wpath, dbi->ObjectName.Buffer);
PWCHAR wpart = wpath + dbi->ObjectName.Length / sizeof (WCHAR);
__small_swprintf (wpart, L"\\Partition0");
upath.Length = dbi->ObjectName.Length
+ wcslen (wpart) * sizeof (WCHAR);
upath.MaximumLength = upath.Length + sizeof (WCHAR);
InitializeObjectAttributes (&attr, &upath, OBJ_CASE_INSENSITIVE,
dirhdl, NULL);
/* Up to W2K the handle needs read access to fetch the partition info. */
status = NtOpenFile (&devhdl, wincap.has_disk_ex_ioctls ()
? READ_CONTROL
: READ_CONTROL | FILE_READ_DATA,
&attr, &io, FILE_SHARE_VALID_FLAGS, 0);
if (!NT_SUCCESS (status))
{
debug_printf ("NtOpenFile(%S), status %p", &upath, status);
__seterrno_from_nt_status (status);
continue;
}
if (!got_one)
{
print ("major minor #blocks name\n\n");
got_one = true;
}
/* Fetch partition info for the entire disk to get its size. */
if (wincap.has_disk_ex_ioctls ()
&& DeviceIoControl (devhdl, IOCTL_DISK_GET_PARTITION_INFO_EX, NULL, 0,
ioctl_buf, NT_MAX_PATH, &bytes_read, NULL))
{
pix = (PARTITION_INFORMATION_EX *) ioctl_buf;
size = pix->PartitionLength.QuadPart;
}
else if (DeviceIoControl (devhdl, IOCTL_DISK_GET_PARTITION_INFO, NULL, 0,
ioctl_buf, NT_MAX_PATH, &bytes_read, NULL))
{
pi = (PARTITION_INFORMATION *) ioctl_buf;
size = pi->PartitionLength.QuadPart;
}
else if (DeviceIoControl (devhdl, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0,
ioctl_buf, NT_MAX_PATH, &bytes_read, NULL))
{
/* NT4 doesn't support to call IOCTL_DISK_GET_PARTITION_INFO for the
entire drive. */
DISK_GEOMETRY *dg = (DISK_GEOMETRY *) ioctl_buf;
size = (unsigned long long) dg->Cylinders.QuadPart
* dg->TracksPerCylinder
* dg->SectorsPerTrack
* dg->BytesPerSector;
}
else
{
debug_printf ("DeviceIoControl (%S, "
"IOCTL_DISK_GET_PARTITION_INFO{_EX}) %E", &upath);
size = 0;
}
dev.parsedisk (drive_num, 0);
bufptr += __small_sprintf (bufptr, "%5d %5d %9U %s\n",
dev.major, dev.minor,
size >> 10, dev.name + 5);
/* Fetch drive layout info to get size of all partitions on the disk. */
if (wincap.has_disk_ex_ioctls ()
&& DeviceIoControl (devhdl, IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
NULL, 0, ioctl_buf, NT_MAX_PATH, &bytes_read, NULL))
{
PDRIVE_LAYOUT_INFORMATION_EX pdlix = (PDRIVE_LAYOUT_INFORMATION_EX)
ioctl_buf;
part_cnt = pdlix->PartitionCount;
pix = pdlix->PartitionEntry;
}
else if (DeviceIoControl (devhdl, IOCTL_DISK_GET_DRIVE_LAYOUT,
NULL, 0, ioctl_buf, NT_MAX_PATH, &bytes_read, NULL))
{
PDRIVE_LAYOUT_INFORMATION pdli = (PDRIVE_LAYOUT_INFORMATION) ioctl_buf;
part_cnt = pdli->PartitionCount;
pi = pdli->PartitionEntry;
}
else
debug_printf ("DeviceIoControl(%S, "
"IOCTL_DISK_GET_DRIVE_LAYOUT{_EX}): %E", &upath);
/* Loop over partitions. */
if (pix || pi)
for (DWORD i = 0; i < part_cnt; ++i)
{
DWORD part_num;
if (pix)
{
size = pix->PartitionLength.QuadPart;
part_num = pix->PartitionNumber;
++pix;
}
else
{
size = pi->PartitionLength.QuadPart;
/* Pre-W2K you can't rely on the partition number info for
unused partitions. */
if (pi->PartitionType == PARTITION_ENTRY_UNUSED
|| pi->PartitionType == PARTITION_EXTENDED)
part_num = 0;
else
part_num = pi->PartitionNumber;
++pi;
}
/* A partition number of 0 denotes an extended partition or a
filler entry as described in fhandler_dev_floppy::lock_partition.
Just skip. */
if (part_num == 0)
continue;
dev.parsedisk (drive_num, part_num);
bufptr += __small_sprintf (bufptr, "%5d %5d %9U %s\n",
dev.major, dev.minor,
size >> 10, dev.name + 5);
}
NtClose (devhdl);
}
NtClose (dirhdl);
if (!got_one)
return 0;
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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