mirror of
https://github.com/SerenityOS/serenity
synced 2024-10-18 05:43:09 +00:00
370 lines
13 KiB
C++
370 lines
13 KiB
C++
#include "ProcFileSystem.h"
|
|
#include "Process.h"
|
|
#include <VirtualFileSystem/VirtualFileSystem.h>
|
|
#include "system.h"
|
|
#include "MemoryManager.h"
|
|
#include "StdLib.h"
|
|
#include "i386.h"
|
|
|
|
static ProcFileSystem* s_the;
|
|
|
|
ProcFileSystem& ProcFileSystem::the()
|
|
{
|
|
ASSERT(s_the);
|
|
return *s_the;
|
|
}
|
|
|
|
RetainPtr<ProcFileSystem> ProcFileSystem::create()
|
|
{
|
|
return adopt(*new ProcFileSystem);
|
|
}
|
|
|
|
ProcFileSystem::ProcFileSystem()
|
|
{
|
|
s_the = this;
|
|
}
|
|
|
|
ProcFileSystem::~ProcFileSystem()
|
|
{
|
|
}
|
|
|
|
ByteBuffer procfs$pid_fds(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
char* buffer;
|
|
auto stringImpl = StringImpl::createUninitialized(process.number_of_open_file_descriptors() * 80, buffer);
|
|
memset(buffer, 0, stringImpl->length());
|
|
char* ptr = buffer;
|
|
for (size_t i = 0; i < process.max_open_file_descriptors(); ++i) {
|
|
auto* descriptor = process.file_descriptor(i);
|
|
if (!descriptor)
|
|
continue;
|
|
ptr += ksprintf(ptr, "% 3u %s\n", i, descriptor->absolute_path().characters());
|
|
}
|
|
*ptr = '\0';
|
|
return ByteBuffer::copy((byte*)buffer, ptr - buffer);
|
|
}
|
|
|
|
ByteBuffer procfs$pid_vm(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
char* buffer;
|
|
auto stringImpl = StringImpl::createUninitialized(80 + process.regionCount() * 160 + 4096, buffer);
|
|
memset(buffer, 0, stringImpl->length());
|
|
char* ptr = buffer;
|
|
ptr += ksprintf(ptr, "BEGIN END SIZE NAME\n");
|
|
for (auto& region : process.regions()) {
|
|
ptr += ksprintf(ptr, "%x -- %x %x %s\n",
|
|
region->linearAddress.get(),
|
|
region->linearAddress.offset(region->size - 1).get(),
|
|
region->size,
|
|
region->name.characters());
|
|
ptr += ksprintf(ptr, "VMO: %s \"%s\" @ %x(%u)\n",
|
|
region->vmo().is_anonymous() ? "anonymous" : "file-backed",
|
|
region->vmo().name().characters(),
|
|
®ion->vmo(),
|
|
region->vmo().retainCount());
|
|
for (size_t i = 0; i < region->vmo().page_count(); ++i) {
|
|
auto& physical_page = region->vmo().physical_pages()[i];
|
|
ptr += ksprintf(ptr, "P%x%s(%u) ",
|
|
physical_page ? physical_page->paddr().get() : 0,
|
|
region->cow_map.get(i) ? "!" : "",
|
|
physical_page ? physical_page->retain_count() : 0
|
|
);
|
|
}
|
|
ptr += ksprintf(ptr, "\n");
|
|
}
|
|
*ptr = '\0';
|
|
return ByteBuffer::copy((byte*)buffer, ptr - buffer);
|
|
}
|
|
|
|
ByteBuffer procfs$pid_stack(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
ProcessPagingScope pagingScope(process);
|
|
struct RecognizedSymbol {
|
|
dword address;
|
|
const KSym* ksym;
|
|
};
|
|
Vector<RecognizedSymbol> recognizedSymbols;
|
|
if (auto* eipKsym = ksymbolicate(process.tss().eip))
|
|
recognizedSymbols.append({ process.tss().eip, eipKsym });
|
|
for (dword* stackPtr = (dword*)process.framePtr(); process.isValidAddressForKernel(LinearAddress((dword)stackPtr)); stackPtr = (dword*)*stackPtr) {
|
|
dword retaddr = stackPtr[1];
|
|
if (auto* ksym = ksymbolicate(retaddr))
|
|
recognizedSymbols.append({ retaddr, ksym });
|
|
}
|
|
size_t bytesNeeded = 0;
|
|
for (auto& symbol : recognizedSymbols) {
|
|
bytesNeeded += symbol.ksym->name.length() + 8 + 16;
|
|
}
|
|
auto buffer = ByteBuffer::createUninitialized(bytesNeeded);
|
|
char* bufptr = (char*)buffer.pointer();
|
|
|
|
for (auto& symbol : recognizedSymbols) {
|
|
// FIXME: This doesn't actually create a file!
|
|
unsigned offset = symbol.address - symbol.ksym->address;
|
|
bufptr += ksprintf(bufptr, "%p %s +%u\n", symbol.address, symbol.ksym->name.characters(), offset);
|
|
}
|
|
buffer.trim(bufptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$pid_regs(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
auto& tss = process.tss();
|
|
auto buffer = ByteBuffer::createUninitialized(1024);
|
|
char* ptr = (char*)buffer.pointer();
|
|
ptr += ksprintf(ptr, "eax: %x\n", tss.eax);
|
|
ptr += ksprintf(ptr, "ebx: %x\n", tss.ebx);
|
|
ptr += ksprintf(ptr, "ecx: %x\n", tss.ecx);
|
|
ptr += ksprintf(ptr, "edx: %x\n", tss.edx);
|
|
ptr += ksprintf(ptr, "esi: %x\n", tss.esi);
|
|
ptr += ksprintf(ptr, "edi: %x\n", tss.edi);
|
|
ptr += ksprintf(ptr, "ebp: %x\n", tss.ebp);
|
|
ptr += ksprintf(ptr, "cr3: %x\n", tss.cr3);
|
|
ptr += ksprintf(ptr, "flg: %x\n", tss.eflags);
|
|
ptr += ksprintf(ptr, "sp: %w:%x\n", tss.ss, tss.esp);
|
|
ptr += ksprintf(ptr, "pc: %w:%x\n", tss.cs, tss.eip);
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$pid_exe(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
auto inode = process.executableInode();
|
|
return VirtualFileSystem::the().absolutePath(inode).toByteBuffer();
|
|
}
|
|
|
|
ByteBuffer procfs$pid_cwd(Process& process)
|
|
{
|
|
ProcessInspectionHandle handle(process);
|
|
auto inode = process.cwdInode();
|
|
return VirtualFileSystem::the().absolutePath(inode).toByteBuffer();
|
|
}
|
|
|
|
void ProcFileSystem::addProcess(Process& process)
|
|
{
|
|
InterruptDisabler disabler;
|
|
char buf[16];
|
|
ksprintf(buf, "%d", process.pid());
|
|
auto dir = addFile(createDirectory(buf));
|
|
m_pid2inode.set(process.pid(), dir.index());
|
|
addFile(createGeneratedFile("vm", [&process] { return procfs$pid_vm(process); }), dir.index());
|
|
addFile(createGeneratedFile("stack", [&process] { return procfs$pid_stack(process); }), dir.index());
|
|
addFile(createGeneratedFile("regs", [&process] { return procfs$pid_regs(process); }), dir.index());
|
|
addFile(createGeneratedFile("fds", [&process] { return procfs$pid_fds(process); }), dir.index());
|
|
if (process.executableInode().isValid())
|
|
addFile(createGeneratedFile("exe", [&process] { return procfs$pid_exe(process); }, 00120777), dir.index());
|
|
addFile(createGeneratedFile("cwd", [&process] { return procfs$pid_cwd(process); }, 00120777), dir.index());
|
|
}
|
|
|
|
void ProcFileSystem::removeProcess(Process& process)
|
|
{
|
|
InterruptDisabler disabler;
|
|
auto pid = process.pid();
|
|
auto it = m_pid2inode.find(pid);
|
|
ASSERT(it != m_pid2inode.end());
|
|
bool success = removeFile((*it).value);
|
|
ASSERT(success);
|
|
m_pid2inode.remove(pid);
|
|
}
|
|
|
|
ByteBuffer procfs$mm()
|
|
{
|
|
// FIXME: Implement
|
|
InterruptDisabler disabler;
|
|
auto buffer = ByteBuffer::createUninitialized(1024 + 80 * MM.m_vmos.size());
|
|
char* ptr = (char*)buffer.pointer();
|
|
for (auto* vmo : MM.m_vmos) {
|
|
ptr += ksprintf(ptr, "VMO: %p %s(%u): p:%4u %s\n",
|
|
vmo,
|
|
vmo->is_anonymous() ? "anon" : "file",
|
|
vmo->retainCount(),
|
|
vmo->page_count(),
|
|
vmo->name().characters());
|
|
}
|
|
ptr += ksprintf(ptr, "VMO count: %u\n", MM.m_vmos.size());
|
|
ptr += ksprintf(ptr, "Free physical pages: %u\n", MM.m_free_physical_pages.size());
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$regions()
|
|
{
|
|
// FIXME: Implement
|
|
InterruptDisabler disabler;
|
|
auto buffer = ByteBuffer::createUninitialized(1024 + 80 * MM.m_regions.size());
|
|
char* ptr = (char*)buffer.pointer();
|
|
for (auto* region : MM.m_regions) {
|
|
ptr += ksprintf(ptr, "Region: %p VMO=%p %s\n",
|
|
region,
|
|
®ion->vmo(),
|
|
region->name.characters());
|
|
}
|
|
ptr += ksprintf(ptr, "Region count: %u\n", MM.m_regions.size());
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$mounts()
|
|
{
|
|
InterruptDisabler disabler;
|
|
auto buffer = ByteBuffer::createUninitialized(VirtualFileSystem::the().mountCount() * 80);
|
|
char* ptr = (char*)buffer.pointer();
|
|
VirtualFileSystem::the().forEachMount([&ptr] (auto& mount) {
|
|
auto& fs = mount.fileSystem();
|
|
ptr += ksprintf(ptr, "%s @ ", fs.className());
|
|
if (!mount.host().isValid())
|
|
ptr += ksprintf(ptr, "/\n", fs.className());
|
|
else
|
|
ptr += ksprintf(ptr, "%u:%u\n", mount.host().fileSystemID(), mount.host().index());
|
|
});
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$cpuinfo()
|
|
{
|
|
auto buffer = ByteBuffer::createUninitialized(256);
|
|
char* ptr = (char*)buffer.pointer();
|
|
{
|
|
CPUID cpuid(0);
|
|
ptr += ksprintf(ptr, "cpuid: ");
|
|
auto emit_dword = [&] (dword value) {
|
|
ptr += ksprintf(ptr, "%c%c%c%c",
|
|
value & 0xff,
|
|
(value >> 8) & 0xff,
|
|
(value >> 16) & 0xff,
|
|
(value >> 24) & 0xff);
|
|
};
|
|
emit_dword(cpuid.ebx());
|
|
emit_dword(cpuid.edx());
|
|
emit_dword(cpuid.ecx());
|
|
ptr += ksprintf(ptr, "\n");
|
|
}
|
|
{
|
|
CPUID cpuid(1);
|
|
dword stepping = cpuid.eax() & 0xf;
|
|
dword model = (cpuid.eax() >> 4) & 0xf;
|
|
dword family = (cpuid.eax() >> 8) & 0xf;
|
|
dword type = (cpuid.eax() >> 12) & 0x3;
|
|
dword extended_model = (cpuid.eax() >> 16) & 0xf;
|
|
dword extended_family = (cpuid.eax() >> 20) & 0xff;
|
|
dword display_model;
|
|
dword display_family;
|
|
if (family == 15) {
|
|
display_family = family + extended_family;
|
|
display_model = model + (extended_model << 4);
|
|
} else if (family == 6) {
|
|
display_family = family;
|
|
display_model = model + (extended_model << 4);
|
|
} else {
|
|
display_family = family;
|
|
display_model = model;
|
|
}
|
|
ptr += ksprintf(ptr, "family: %u\n", display_family);
|
|
ptr += ksprintf(ptr, "model: %u\n", display_model);
|
|
ptr += ksprintf(ptr, "stepping: %u\n", stepping);
|
|
ptr += ksprintf(ptr, "type: %u\n", type);
|
|
}
|
|
{
|
|
// FIXME: Check first that this is supported by calling CPUID with eax=0x80000000
|
|
// and verifying that the returned eax>=0x80000004.
|
|
char buffer[48];
|
|
dword* bufptr = reinterpret_cast<dword*>(buffer);
|
|
auto copy_brand_string_part_to_buffer = [&] (dword i) {
|
|
CPUID cpuid(0x80000002 + i);
|
|
*bufptr++ = cpuid.eax();
|
|
*bufptr++ = cpuid.ebx();
|
|
*bufptr++ = cpuid.ecx();
|
|
*bufptr++ = cpuid.edx();
|
|
};
|
|
copy_brand_string_part_to_buffer(0);
|
|
copy_brand_string_part_to_buffer(1);
|
|
copy_brand_string_part_to_buffer(2);
|
|
ptr += ksprintf(ptr, "brandstr: \"%s\"\n", buffer);
|
|
}
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$kmalloc()
|
|
{
|
|
auto buffer = ByteBuffer::createUninitialized(256);
|
|
char* ptr = (char*)buffer.pointer();
|
|
ptr += ksprintf(ptr, "eternal: %u\npage-aligned: %u\nallocated: %u\nfree: %u\n", kmalloc_sum_eternal, sum_alloc, sum_free);
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$summary()
|
|
{
|
|
InterruptDisabler disabler;
|
|
auto processes = Process::allProcesses();
|
|
auto buffer = ByteBuffer::createUninitialized(processes.size() * 256);
|
|
char* ptr = (char*)buffer.pointer();
|
|
ptr += ksprintf(ptr, "PID TPG PGP SID OWNER STATE PPID NSCHED FDS TTY NAME\n");
|
|
for (auto* process : processes) {
|
|
ptr += ksprintf(ptr, "% 3u % 3u % 3u % 3u % 4u % 8s % 3u % 9u % 3u % 4s %s\n",
|
|
process->pid(),
|
|
process->tty() ? process->tty()->pgid() : 0,
|
|
process->pgid(),
|
|
process->sid(),
|
|
process->uid(),
|
|
toString(process->state()),
|
|
process->ppid(),
|
|
process->timesScheduled(),
|
|
process->number_of_open_file_descriptors(),
|
|
process->tty() ? strrchr(process->tty()->ttyName().characters(), '/') + 1 : "n/a",
|
|
process->name().characters());
|
|
}
|
|
*ptr = '\0';
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
ByteBuffer procfs$vnodes()
|
|
{
|
|
auto& vfs = VirtualFileSystem::the();
|
|
auto buffer = ByteBuffer::createUninitialized(vfs.m_maxNodeCount * 256);
|
|
char* ptr = (char*)buffer.pointer();
|
|
for (size_t i = 0; i < vfs.m_maxNodeCount; ++i) {
|
|
auto& vnode = vfs.m_nodes[i];
|
|
// FIXME: Retain the vnode while inspecting it.
|
|
if (!vnode.inUse())
|
|
continue;
|
|
auto path = vfs.absolutePath(vnode.inode);
|
|
if (path.isEmpty()) {
|
|
if (auto* dev = vnode.characterDevice()) {
|
|
if (dev->isTTY())
|
|
path = static_cast<const TTY*>(dev)->ttyName();
|
|
}
|
|
}
|
|
ptr += ksprintf(ptr, "vnode %03u: %02u:%08u (%u) %s\n", i, vnode.inode.fileSystemID(), vnode.inode.index(), vnode.retain_count(), path.characters());
|
|
}
|
|
*ptr = '\0';
|
|
buffer.trim(ptr - (char*)buffer.pointer());
|
|
return buffer;
|
|
}
|
|
|
|
bool ProcFileSystem::initialize()
|
|
{
|
|
SyntheticFileSystem::initialize();
|
|
addFile(createGeneratedFile("mm", procfs$mm));
|
|
addFile(createGeneratedFile("regions", procfs$regions));
|
|
addFile(createGeneratedFile("mounts", procfs$mounts));
|
|
addFile(createGeneratedFile("kmalloc", procfs$kmalloc));
|
|
addFile(createGeneratedFile("summary", procfs$summary));
|
|
addFile(createGeneratedFile("cpuinfo", procfs$cpuinfo));
|
|
addFile(createGeneratedFile("vnodes", procfs$vnodes));
|
|
return true;
|
|
}
|
|
|
|
const char* ProcFileSystem::className() const
|
|
{
|
|
return "procfs";
|
|
}
|