mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
415 lines
11 KiB
C++
415 lines
11 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2012, 2013, 2014.
|
|
|
|
This file is part of Sortix.
|
|
|
|
Sortix is free software: you can redistribute it and/or modify it under the
|
|
terms of the GNU General Public License as published by the Free Software
|
|
Foundation, either version 3 of the License, or (at your option) any later
|
|
version.
|
|
|
|
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
inode.cpp
|
|
Interfaces and utility classes for implementing inodes.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
|
|
#include <sortix/clock.h>
|
|
#include <sortix/stat.h>
|
|
#include <sortix/statvfs.h>
|
|
|
|
#include <sortix/kernel/inode.h>
|
|
#include <sortix/kernel/interlock.h>
|
|
#include <sortix/kernel/ioctx.h>
|
|
#include <sortix/kernel/kernel.h>
|
|
#include <sortix/kernel/kthread.h>
|
|
#include <sortix/kernel/refcount.h>
|
|
#include <sortix/kernel/time.h>
|
|
|
|
namespace Sortix {
|
|
|
|
AbstractInode::AbstractInode()
|
|
{
|
|
metalock = KTHREAD_MUTEX_INITIALIZER;
|
|
inode_type = INODE_TYPE_UNKNOWN;
|
|
stat_mode = 0;
|
|
stat_nlink = 0;
|
|
stat_uid = 0;
|
|
stat_gid = 0;
|
|
stat_size = 0;
|
|
stat_atim = Time::Get(CLOCK_REALTIME);
|
|
stat_ctim = Time::Get(CLOCK_REALTIME);
|
|
stat_mtim = Time::Get(CLOCK_REALTIME);
|
|
stat_blksize = 0;
|
|
stat_blocks = 0;
|
|
}
|
|
|
|
AbstractInode::~AbstractInode()
|
|
{
|
|
}
|
|
|
|
void AbstractInode::linked()
|
|
{
|
|
InterlockedIncrement(&stat_nlink);
|
|
}
|
|
|
|
void AbstractInode::unlinked()
|
|
{
|
|
InterlockedDecrement(&stat_nlink);
|
|
}
|
|
|
|
int AbstractInode::sync(ioctx_t* /*ctx*/)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int AbstractInode::stat(ioctx_t* ctx, struct stat* st)
|
|
{
|
|
struct stat retst;
|
|
ScopedLock lock(&metalock);
|
|
memset(&retst, 0, sizeof(retst));
|
|
retst.st_dev = dev;
|
|
retst.st_rdev = dev;
|
|
retst.st_ino = ino;
|
|
retst.st_mode = stat_mode;
|
|
retst.st_nlink = (nlink_t) stat_nlink;
|
|
retst.st_uid = stat_uid;
|
|
retst.st_gid = stat_gid;
|
|
retst.st_size = stat_size;
|
|
retst.st_atim = stat_atim;
|
|
retst.st_ctim = stat_ctim;
|
|
retst.st_mtim = stat_mtim;
|
|
retst.st_blksize = stat_blksize;
|
|
retst.st_blocks = stat_size / 512;
|
|
if ( !ctx->copy_to_dest(st, &retst, sizeof(retst)) )
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
// TODO: Provide an easier mechanism for letting subclasses give this
|
|
// information than overriding this method. Additionally, what should be
|
|
// done in abstract kernel objects where this call doesn't make that much
|
|
// sense?
|
|
int AbstractInode::statvfs(ioctx_t* ctx, struct statvfs* stvfs)
|
|
{
|
|
struct statvfs retstvfs;
|
|
ScopedLock lock(&metalock);
|
|
memset(&retstvfs, 0, sizeof(retstvfs));
|
|
retstvfs.f_bsize = 0;
|
|
retstvfs.f_frsize = 0;
|
|
retstvfs.f_blocks = 0;
|
|
retstvfs.f_bfree = 0;
|
|
retstvfs.f_bavail = 0;
|
|
retstvfs.f_files = 0;
|
|
retstvfs.f_ffree = 0;
|
|
retstvfs.f_favail = 0;
|
|
retstvfs.f_fsid = dev;
|
|
retstvfs.f_flag = ST_NOSUID;
|
|
retstvfs.f_namemax = ULONG_MAX;
|
|
if ( !ctx->copy_to_dest(stvfs, &retstvfs, sizeof(retstvfs)) )
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int AbstractInode::chmod(ioctx_t* /*ctx*/, mode_t mode)
|
|
{
|
|
ScopedLock lock(&metalock);
|
|
stat_mode = (mode & S_SETABLE) | this->type;
|
|
return 0;
|
|
}
|
|
|
|
int AbstractInode::chown(ioctx_t* /*ctx*/, uid_t owner, gid_t group)
|
|
{
|
|
ScopedLock lock(&metalock);
|
|
stat_uid = owner;
|
|
stat_gid= group;
|
|
return 0;
|
|
}
|
|
|
|
int AbstractInode::truncate(ioctx_t* /*ctx*/, off_t /*length*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EISDIR, -1;
|
|
return errno = EINVAL, -1;
|
|
}
|
|
|
|
off_t AbstractInode::lseek(ioctx_t* /*ctx*/, off_t /*offset*/, int /*whence*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_STREAM || inode_type == INODE_TYPE_TTY )
|
|
return errno = ESPIPE, -1;
|
|
return errno = EBADF, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::read(ioctx_t* /*ctx*/, uint8_t* /*buf*/,
|
|
size_t /*count*/)
|
|
{
|
|
return errno = EBADF, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::pread(ioctx_t* /*ctx*/, uint8_t* /*buf*/,
|
|
size_t /*count*/, off_t /*off*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_STREAM || inode_type == INODE_TYPE_TTY )
|
|
return errno = ESPIPE, -1;
|
|
return errno = EBADF, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::write(ioctx_t* /*ctx*/, const uint8_t* /*buf*/,
|
|
size_t /*count*/)
|
|
{
|
|
return errno = EBADF, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::pwrite(ioctx_t* /*ctx*/, const uint8_t* /*buf*/,
|
|
size_t /*count*/, off_t /*off*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_STREAM || inode_type == INODE_TYPE_TTY )
|
|
return errno = ESPIPE, -1;
|
|
return errno = EBADF, -1;
|
|
}
|
|
|
|
int AbstractInode::utimens(ioctx_t* /*ctx*/, const struct timespec* atime,
|
|
const struct timespec* ctime,
|
|
const struct timespec* mtime)
|
|
{
|
|
ScopedLock lock(&metalock);
|
|
if ( atime )
|
|
stat_atim = *atime;
|
|
if ( ctime )
|
|
stat_ctim = *ctime;
|
|
if ( mtime )
|
|
stat_mtim = *mtime;
|
|
return 0;
|
|
}
|
|
|
|
int AbstractInode::isatty(ioctx_t* /*ctx*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return 1;
|
|
return errno = ENOTTY, 0;
|
|
}
|
|
|
|
ssize_t AbstractInode::readdirents(ioctx_t* /*ctx*/,
|
|
struct kernel_dirent* /*dirent*/,
|
|
size_t /*size*/, off_t /*start*/,
|
|
size_t /*maxcount*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
Ref<Inode> AbstractInode::open(ioctx_t* /*ctx*/, const char* /*filename*/,
|
|
int /*flags*/, mode_t /*mode*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, Ref<Inode>(NULL);
|
|
return errno = ENOTDIR, Ref<Inode>(NULL);
|
|
}
|
|
|
|
int AbstractInode::mkdir(ioctx_t* /*ctx*/, const char* /*filename*/,
|
|
mode_t /*mode*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::link(ioctx_t* /*ctx*/, const char* /*filename*/,
|
|
Ref<Inode> /*node*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::link_raw(ioctx_t* /*ctx*/, const char* /*filename*/,
|
|
Ref<Inode> /*node*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::unlink(ioctx_t* /*ctx*/, const char* /*filename*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::unlink_raw(ioctx_t* /*ctx*/, const char* /*filename*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::rmdir(ioctx_t* /*ctx*/, const char* /*filename*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::rmdir_me(ioctx_t* /*ctx*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
int AbstractInode::symlink(ioctx_t* /*ctx*/, const char* /*oldname*/,
|
|
const char* /*filename*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::readlink(ioctx_t* /*ctx*/, char* /*buf*/,
|
|
size_t /*bufsiz*/)
|
|
{
|
|
return errno = EINVAL, -1;
|
|
}
|
|
|
|
int AbstractInode::tcgetwincurpos(ioctx_t* /*ctx*/, struct wincurpos* /*wcp*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::tcgetwinsize(ioctx_t* /*ctx*/, struct winsize* /*ws*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::tcsetpgrp(ioctx_t* /*ctx*/, pid_t /*pgid*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
pid_t AbstractInode::tcgetpgrp(ioctx_t* /*ctx*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::settermmode(ioctx_t* /*ctx*/, unsigned /*mode*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::gettermmode(ioctx_t* /*ctx*/, unsigned* /*mode*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_TTY )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::poll(ioctx_t* /*ctx*/, PollNode* /*node*/)
|
|
{
|
|
#if 0 // TODO: Support poll on regular files as per POSIX.
|
|
if ( inode_type == INODE_TYPE_FILE )
|
|
{
|
|
// TODO: Correct bits?
|
|
if ( !((POLLIN | POLLOUT) & node->events) )
|
|
return errno = EAGAIN, -1;
|
|
node->master->revents |= (POLLIN | POLLOUT) & node->events;
|
|
return 0;
|
|
}
|
|
#endif
|
|
return errno = ENOTSUP, -1;
|
|
}
|
|
|
|
int AbstractInode::rename_here(ioctx_t* /*ctx*/, Ref<Inode> /*from*/,
|
|
const char* /*oldname*/, const char* /*newname*/)
|
|
{
|
|
if ( inode_type == INODE_TYPE_DIR )
|
|
return errno = EBADF, -1;
|
|
return errno = ENOTDIR, -1;
|
|
}
|
|
|
|
Ref<Inode> AbstractInode::accept(ioctx_t* /*ctx*/, uint8_t* /*addr*/,
|
|
size_t* /*addrlen*/, int /*flags*/)
|
|
{
|
|
return errno = ENOTSOCK, Ref<Inode>();
|
|
}
|
|
|
|
int AbstractInode::bind(ioctx_t* /*ctx*/, const uint8_t* /*addr*/,
|
|
size_t /*addrlen*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
int AbstractInode::connect(ioctx_t* /*ctx*/, const uint8_t* /*addr*/,
|
|
size_t /*addrlen*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
int AbstractInode::listen(ioctx_t* /*ctx*/, int /*backlog*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::recv(ioctx_t* /*ctx*/, uint8_t* /*buf*/,
|
|
size_t /*count*/, int /*flags*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::send(ioctx_t* /*ctx*/, const uint8_t* /*buf*/,
|
|
size_t /*count*/, int /*flags*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
int AbstractInode::getsockopt(ioctx_t* /*ctx*/, int /*level*/, int /*option_name*/,
|
|
void* /*option_value*/, size_t* /*option_size_ptr*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
int AbstractInode::setsockopt(ioctx_t* /*ctx*/, int /*level*/, int /*option_name*/,
|
|
const void* /*option_value*/, size_t /*option_size*/)
|
|
{
|
|
return errno = ENOTSOCK, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::tcgetblob(ioctx_t* /*ctx*/, const char* /*name*/, void* /*buffer*/, size_t /*count*/)
|
|
{
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
ssize_t AbstractInode::tcsetblob(ioctx_t* /*ctx*/, const char* /*name*/, const void* /*buffer*/, size_t /*count*/)
|
|
{
|
|
return errno = ENOTTY, -1;
|
|
}
|
|
|
|
int AbstractInode::unmounted(ioctx_t* /*ctx*/)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
} // namespace Sortix
|