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(Interim checkin while we work on this)

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* devices.cc: Regenerate.
* devices.h (device::noexpose): New field.
(device::dev_on_fs): Make a bit field.
(get_major): Use proper type for declaration.
(expose): New field.
(ext_dev_storage): Delete declaration.
(dev_storage_size): Ditto.
(dev_storage): New declaration.
(dev_storage_end): Ditto.
* devices.in: Mark /dev/ptym*, /dev/com*, /dev/pipe, /dev/fifo, and "/dev" as
"no expose".
* fhandler.h (fhandler_dev::lastrealpos): Delete declaration.
(fhandler_dev::devidx): Declare new field.
* fhandler_disk_file.cc: Move fhandler_dev functions into fhandler_dev.cc.
* fhandler_dev.cc: Add includes needed for functions moved from
fhandler_disk_file.cc.
(dev_storage_scan_start): Define place to start listing devices.
(dev_storage_size): Define size of array to scan.
(fhandler_dev::fhandler_dev): Move here from fhandler_disk_file.cc.
(fhandler_dev::opendir): Ditto.
(fhandler_dev::readdir): Just check devidx for non-NULL to determine when to go
to disk for /dev content.  Use dev_storage rather than ext_dev_storage.
Iterate over dev_storage using devidx pointer.  Use accessor functions rather
than raw references to the device struct.  Only increment dir->__d_position
when we are actually going to be returning something.  Add debug_printf for
exit.
(fhandler_dev::rewinddir): Set devidx as appropriate depending on whether
there's a /dev on disk or not.
* gendevices: Don't mark dev_storage static but do put it in the _RDATA
section.
* path.cc (path_conv::check): Use new "device::expose()" function to decide to
forbid programs from referencing internal device types.
This commit is contained in:
Christopher Faylor
2012-03-31 17:38:00 +00:00
parent 54440304b3
commit 1c1294b4ce
9 changed files with 322 additions and 290 deletions
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60
winsup/cygwin/fhandler_disk_file.cc
View File

@@ -2365,66 +2365,6 @@ fhandler_disk_file::closedir (DIR *dir)
return res;
}
fhandler_dev::fhandler_dev () :
fhandler_disk_file (), lastrealpos (0), dir_exists (true)
{
}
DIR *
fhandler_dev::opendir (int fd)
{
DIR *dir;
DIR *res = NULL;
dir = fhandler_disk_file::opendir (fd);
if (dir)
return dir;
if ((dir = (DIR *) malloc (sizeof (DIR))) == NULL)
set_errno (ENOMEM);
else if ((dir->__d_dirent =
(struct dirent *) malloc (sizeof (struct dirent))) == NULL)
{
set_errno (ENOMEM);
goto free_dir;
}
else
{
cygheap_fdnew cfd;
if (cfd < 0 && fd < 0)
goto free_dirent;
dir->__d_dirname = NULL;
dir->__d_dirent->__d_version = __DIRENT_VERSION;
dir->__d_cookie = __DIRENT_COOKIE;
dir->__handle = INVALID_HANDLE_VALUE;
dir->__d_position = 0;
dir->__flags = 0;
dir->__d_internal = 0;
if (fd >= 0)
dir->__d_fd = fd;
else
{
cfd = this;
dir->__d_fd = cfd;
cfd->nohandle (true);
}
set_close_on_exec (true);
dir->__fh = this;
dir_exists = false;
res = dir;
}
syscall_printf ("%p = opendir (%s)", res, get_name ());
return res;
free_dirent:
free (dir->__d_dirent);
free_dir:
free (dir);
return res;
}
fhandler_cygdrive::fhandler_cygdrive () :
fhandler_disk_file (), ndrives (0), pdrive (NULL)
{