newlib-cygwin/winsup/cygwin/fhandler_virtual.cc

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/* fhandler_virtual.cc: base fhandler class for virtual filesystems
Copyright 2002 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 <unistd.h>
#include <stdlib.h>
#include <sys/cygwin.h>
#include "cygerrno.h"
#include "security.h"
#include "fhandler.h"
#include "path.h"
#include "dtable.h"
#include "shared_info.h"
* net.cc (getdomainname): Change second argument of getdomainname to size_t. * fhandler_proc.cc (proc_listing): Add '.' and '..' to directory listing. (fhandler_proc::open): Change use of mode to flags. If the file does not exist already, fail with EROFS if O_CREAT flag is set. Change EROFS error to EACCES error when writing to a file. Use cmalloc to allocate memory for filebuf. (fhandler_proc::close): Use cfree to free filebuf. (fhandler_proc::get_proc_fhandler): Properly detect attempts to access unknown subdir. * fhandler_process.cc (process_listing): Add '.' and '..' to directory listing. (fhandler_process::open): Use cmalloc to allocate memory for filebuf. (fhandler_process::close): Use cfree to free filebuf. * fhandler_registry.cc (registry_listing): Add . and '..' to directory listing. (fhandler_registry::open): Move check for open for writing before open_key. Use cmalloc to allocate memory for filebuf. (fhandler_registry::close): Use cfree to free filebuf. (fhandler_registry::telldir): Use lower 16 bits of __d_position as position in directory. (fhandler_registry::seekdir): Ditto. * fhandler_virtual.cc (fhandler_virtual::write): Change EROFS error to EACCES error. (fhandler_virtual::open): Set the NOHANDLE flag. (fhandler_virtual::dup): Add call to fhandler_base::dup. Allocate child's filebuf using cmalloc. Copy filebuf from parent to child. (fhandler_virtual::close): Use cfree to free filebuf. (fhandler_virtual::~fhandler_virtual): Ditto. (from Chris Faylor <cgf@redhat.com>). (fhandler_registry::readdir): Add support for '.' and '..' files in subdirectories of /proc/registry. * path.cc (path_conv::check): Do not return ENOENT if a file is not found in /proc.
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#include "cygheap.h"
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#include <assert.h>
#include <dirent.h>
fhandler_virtual::fhandler_virtual (DWORD devtype):
* autoload.cc: Add dynamic load statements for 'ZwQueryInformationProcess' and 'ZwQueryVirtualMemory'. * fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual from int to size_t. Change type of position member from __off32_t to __off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take an __off64_t argument. Make lseek take an __off64_t argument. Add fill_filebuf method to fhandler_virtual. Add fill_filebuf method to fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf method to fhandler_process. Add saved_pid and saved_p members to fhandler_process. * fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'. (proc_fhandlers array): Ditto. (fhandler_proc::open): Use fill_filebuf to flesh out the file contents. (fhandler_proc::fill_filebuf): New method. (fhandler_proc::format_proc_meminfo): Ditto. (fhandler_proc::format_proc_stat): Ditto. (fhandler_proc::format_proc_uptime): Ditto. * fhandler_process.cc (process_listing): Add 'stat' and 'statm'. (fhandler_process::fstat): Find the _pinfo structure for the process named in the filename. Return ENOENT if the process is no longer around. Set the gid and uid fields of the stat structure. (fhandler_process::open): Store pid and pointer to _pinfo structure in saved_pid and saved_p respectively. Use fill_filebuf to flesh out file contents. (fhandler_proc::fill_filebuf): New method. (format_process_stat): New function. (format_process_status): Ditto. (format_process_statm): Ditto. (get_process_state): Ditto. (get_mem_values): Ditto. * fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_registry::fill_filebuf): New method. * fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_virtual::lseek): Ditto. (fhandler_virtual::fill_filebuf): New method. (fhandler_virtual::fhandler_virtual): Initialise fileid to -1. * wincap.cc: Set flag has_process_io_counters appropriately. * wincap.h: Add flag has_process_io_counters.
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fhandler_base (devtype), filebuf (NULL), bufalloc ((size_t) -1),
fileid (-1)
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{
}
fhandler_virtual::~fhandler_virtual ()
{
if (filebuf)
* external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h (SIGCOMMUNE): New signal type. (commune_result): New structure for commune functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New. Pid who's communicating with me. (_pinfo::tothem): New. Handle of communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv): Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare. (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself): Initialize new _pinfo lock. (_pinfo::alive): Define. Determines if process still exists. (_pinfo::commune_recv): Define. Receive info from another cooperating process. (_pinfo::commune_send): Define. Send info to another cooperating process. (_pinfo::cmdline): Define. Determine command line of a given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc (talktome): Communicate with any processes who want to talk to me. (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc since buffers don't need to be propagated to subprocesses. * fhandler_registry.cc: Ditto. * fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. * fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. * miscfuncs.cc (isalpha_array): New array populated with xor values for alpha characters to switch from one case to another. * string.h (cygwin_strcasematch): New asm implementation of case match. * string.h (cygwin_nstrcasematch): New asm implementation of counted case match.
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free (filebuf);
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filebuf = NULL;
}
* external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h (SIGCOMMUNE): New signal type. (commune_result): New structure for commune functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New. Pid who's communicating with me. (_pinfo::tothem): New. Handle of communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv): Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare. (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself): Initialize new _pinfo lock. (_pinfo::alive): Define. Determines if process still exists. (_pinfo::commune_recv): Define. Receive info from another cooperating process. (_pinfo::commune_send): Define. Send info to another cooperating process. (_pinfo::cmdline): Define. Determine command line of a given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc (talktome): Communicate with any processes who want to talk to me. (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc since buffers don't need to be propagated to subprocesses. * fhandler_registry.cc: Ditto. * fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. * fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. * miscfuncs.cc (isalpha_array): New array populated with xor values for alpha characters to switch from one case to another. * string.h (cygwin_strcasematch): New asm implementation of case match. * string.h (cygwin_nstrcasematch): New asm implementation of counted case match.
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void
fhandler_virtual::fixup_after_exec (HANDLE)
{
if (filebuf)
filebuf = NULL;
}
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DIR *
fhandler_virtual::opendir (path_conv& pc)
{
DIR *dir;
DIR *res = NULL;
size_t len;
if (exists () <= 0)
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set_errno (ENOTDIR);
else if ((len = strlen (get_name ())) > MAX_PATH - 3)
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set_errno (ENAMETOOLONG);
else if ((dir = (DIR *) malloc (sizeof (DIR))) == NULL)
set_errno (ENOMEM);
else if ((dir->__d_dirname = (char *) malloc (len + 3)) == NULL)
{
free (dir);
set_errno (ENOMEM);
}
else if ((dir->__d_dirent =
(struct dirent *) malloc (sizeof (struct dirent))) == NULL)
{
free (dir);
set_errno (ENOMEM);
}
else
{
strcpy (dir->__d_dirname, get_name ());
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dir->__d_dirent->d_version = __DIRENT_VERSION;
cygheap_fdnew fd;
if (fd >= 0)
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{
fd = this;
fd->set_nohandle (true);
dir->__d_dirent->d_fd = fd;
dir->__d_u.__d_data.__fh = this;
dir->__d_cookie = __DIRENT_COOKIE;
dir->__d_u.__d_data.__handle = INVALID_HANDLE_VALUE;
dir->__d_position = 0;
dir->__d_dirhash = get_namehash ();
res = dir;
}
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}
syscall_printf ("%p = opendir (%s)", res, get_name ());
return res;
}
_off64_t fhandler_virtual::telldir (DIR * dir)
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{
return dir->__d_position;
}
void
fhandler_virtual::seekdir (DIR * dir, _off64_t loc)
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{
dir->__d_position = loc;
return;
}
void
fhandler_virtual::rewinddir (DIR * dir)
{
dir->__d_position = 0;
return;
}
int
fhandler_virtual::closedir (DIR * dir)
{
return 0;
}
_off64_t
fhandler_virtual::lseek (_off64_t offset, int whence)
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{
* autoload.cc: Add dynamic load statements for 'ZwQueryInformationProcess' and 'ZwQueryVirtualMemory'. * fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual from int to size_t. Change type of position member from __off32_t to __off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take an __off64_t argument. Make lseek take an __off64_t argument. Add fill_filebuf method to fhandler_virtual. Add fill_filebuf method to fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf method to fhandler_process. Add saved_pid and saved_p members to fhandler_process. * fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'. (proc_fhandlers array): Ditto. (fhandler_proc::open): Use fill_filebuf to flesh out the file contents. (fhandler_proc::fill_filebuf): New method. (fhandler_proc::format_proc_meminfo): Ditto. (fhandler_proc::format_proc_stat): Ditto. (fhandler_proc::format_proc_uptime): Ditto. * fhandler_process.cc (process_listing): Add 'stat' and 'statm'. (fhandler_process::fstat): Find the _pinfo structure for the process named in the filename. Return ENOENT if the process is no longer around. Set the gid and uid fields of the stat structure. (fhandler_process::open): Store pid and pointer to _pinfo structure in saved_pid and saved_p respectively. Use fill_filebuf to flesh out file contents. (fhandler_proc::fill_filebuf): New method. (format_process_stat): New function. (format_process_status): Ditto. (format_process_statm): Ditto. (get_process_state): Ditto. (get_mem_values): Ditto. * fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_registry::fill_filebuf): New method. * fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_virtual::lseek): Ditto. (fhandler_virtual::fill_filebuf): New method. (fhandler_virtual::fhandler_virtual): Initialise fileid to -1. * wincap.cc: Set flag has_process_io_counters appropriately. * wincap.h: Add flag has_process_io_counters.
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/*
* On Linux, when you lseek within a /proc file,
* the contents of the file are updated.
*/
* autoload.cc (GetSecurityInfo): Define new autoload function. (RegQueryInfoKeyA): Ditto. * fhandler.h (fhandler_virtual::fill_filebuf): Change return type to bool. (fhandler_proc::fill_filebuf): Ditto. (fhandler_registry::fill_filebuf): Ditto. (fhandler_process::fill_filebuf): Ditto. (fhandler_registry::value_name): Add new member. (fhandler_registry::close): Add new method. (fhandler_process::p): Remove member. * fhandler_proc.cc (fhandler_proc::open): Add set_nohandle after calling superclass method. Check return value of fill_filebuf. (fhandler_proc::fill_filebuf): Change return type to bool. Add return statement. * fhandler_process.cc (fhandler_process::open): Add set_nohandle after calling superclass method. Remove references to p. Check return value of fill_filebuf. (fhandler_process::fill_filebuf): Change return type to bool. Don't use dereference operator on p. Add return statement. (fhandler_process::format_process_stat): Fix typo. * fhandler_registry.cc: Add static open_key declaration. (fhandler_registry::exists): Assume path is already normalised. Try opening the path as a key in its own right first, before reverting to enumerating subkeys and values of the parent key. (fhandler_registry::fstat): Add additional code to return more relevant information about the registry key/value. (fhandler_registry::readdir): Explicitly set desired access when opening registry key. Remove output of buf from debug_printf format string. (fhandler_registry::open): Use set_io_handle to store registry key handle. Set value_name member. Move code to read a value from the registry to fill_filebuf. Add call to fill_filebuf. (fhandler_registry::close): New method. (fhandler_registry::fill_filebuf): Change return type to bool. Add code to read a value from registry. (fhandler_registry::open_key): Make function static. Use KEY_READ as desired access unless this is the last path component. Check the return value of RegOpenKeyEx for an error instead of hKey. * fhandler_virtual.cc (fhandler_virtual::lseek): Check the return value of fill_filebuf. (fhandler_virtual::open): Remove call to set_nohandle. (fhandler_virtual::fill_filebuf): Change return type to bool. Add return statement. * security.cc (get_nt_object_attribute): New function. (get_object_attribute): New function. * security.h (get_object_attribute): New function declaration.
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if (!fill_filebuf ())
return (_off64_t) -1;
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switch (whence)
{
case SEEK_SET:
position = offset;
break;
case SEEK_CUR:
position += offset;
break;
case SEEK_END:
position = filesize + offset;
break;
default:
set_errno (EINVAL);
return (_off64_t) -1;
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}
return position;
}
int
fhandler_virtual::dup (fhandler_base * child)
{
* net.cc (getdomainname): Change second argument of getdomainname to size_t. * fhandler_proc.cc (proc_listing): Add '.' and '..' to directory listing. (fhandler_proc::open): Change use of mode to flags. If the file does not exist already, fail with EROFS if O_CREAT flag is set. Change EROFS error to EACCES error when writing to a file. Use cmalloc to allocate memory for filebuf. (fhandler_proc::close): Use cfree to free filebuf. (fhandler_proc::get_proc_fhandler): Properly detect attempts to access unknown subdir. * fhandler_process.cc (process_listing): Add '.' and '..' to directory listing. (fhandler_process::open): Use cmalloc to allocate memory for filebuf. (fhandler_process::close): Use cfree to free filebuf. * fhandler_registry.cc (registry_listing): Add . and '..' to directory listing. (fhandler_registry::open): Move check for open for writing before open_key. Use cmalloc to allocate memory for filebuf. (fhandler_registry::close): Use cfree to free filebuf. (fhandler_registry::telldir): Use lower 16 bits of __d_position as position in directory. (fhandler_registry::seekdir): Ditto. * fhandler_virtual.cc (fhandler_virtual::write): Change EROFS error to EACCES error. (fhandler_virtual::open): Set the NOHANDLE flag. (fhandler_virtual::dup): Add call to fhandler_base::dup. Allocate child's filebuf using cmalloc. Copy filebuf from parent to child. (fhandler_virtual::close): Use cfree to free filebuf. (fhandler_virtual::~fhandler_virtual): Ditto. (from Chris Faylor <cgf@redhat.com>). (fhandler_registry::readdir): Add support for '.' and '..' files in subdirectories of /proc/registry. * path.cc (path_conv::check): Do not return ENOENT if a file is not found in /proc.
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int ret = fhandler_base::dup (child);
if (!ret)
{
fhandler_virtual *fhproc_child = (fhandler_virtual *) child;
* external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h (SIGCOMMUNE): New signal type. (commune_result): New structure for commune functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New. Pid who's communicating with me. (_pinfo::tothem): New. Handle of communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv): Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare. (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself): Initialize new _pinfo lock. (_pinfo::alive): Define. Determines if process still exists. (_pinfo::commune_recv): Define. Receive info from another cooperating process. (_pinfo::commune_send): Define. Send info to another cooperating process. (_pinfo::cmdline): Define. Determine command line of a given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc (talktome): Communicate with any processes who want to talk to me. (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc since buffers don't need to be propagated to subprocesses. * fhandler_registry.cc: Ditto. * fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. * fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. * miscfuncs.cc (isalpha_array): New array populated with xor values for alpha characters to switch from one case to another. * string.h (cygwin_strcasematch): New asm implementation of case match. * string.h (cygwin_nstrcasematch): New asm implementation of counted case match.
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fhproc_child->filebuf = (char *) malloc (filesize);
* net.cc (getdomainname): Change second argument of getdomainname to size_t. * fhandler_proc.cc (proc_listing): Add '.' and '..' to directory listing. (fhandler_proc::open): Change use of mode to flags. If the file does not exist already, fail with EROFS if O_CREAT flag is set. Change EROFS error to EACCES error when writing to a file. Use cmalloc to allocate memory for filebuf. (fhandler_proc::close): Use cfree to free filebuf. (fhandler_proc::get_proc_fhandler): Properly detect attempts to access unknown subdir. * fhandler_process.cc (process_listing): Add '.' and '..' to directory listing. (fhandler_process::open): Use cmalloc to allocate memory for filebuf. (fhandler_process::close): Use cfree to free filebuf. * fhandler_registry.cc (registry_listing): Add . and '..' to directory listing. (fhandler_registry::open): Move check for open for writing before open_key. Use cmalloc to allocate memory for filebuf. (fhandler_registry::close): Use cfree to free filebuf. (fhandler_registry::telldir): Use lower 16 bits of __d_position as position in directory. (fhandler_registry::seekdir): Ditto. * fhandler_virtual.cc (fhandler_virtual::write): Change EROFS error to EACCES error. (fhandler_virtual::open): Set the NOHANDLE flag. (fhandler_virtual::dup): Add call to fhandler_base::dup. Allocate child's filebuf using cmalloc. Copy filebuf from parent to child. (fhandler_virtual::close): Use cfree to free filebuf. (fhandler_virtual::~fhandler_virtual): Ditto. (from Chris Faylor <cgf@redhat.com>). (fhandler_registry::readdir): Add support for '.' and '..' files in subdirectories of /proc/registry. * path.cc (path_conv::check): Do not return ENOENT if a file is not found in /proc.
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fhproc_child->bufalloc = fhproc_child->filesize = filesize;
fhproc_child->position = position;
memcpy (fhproc_child->filebuf, filebuf, filesize);
fhproc_child->set_flags (get_flags ());
}
return ret;
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}
int
fhandler_virtual::close ()
{
if (filebuf)
* external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h (SIGCOMMUNE): New signal type. (commune_result): New structure for commune functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New. Pid who's communicating with me. (_pinfo::tothem): New. Handle of communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv): Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare. (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself): Initialize new _pinfo lock. (_pinfo::alive): Define. Determines if process still exists. (_pinfo::commune_recv): Define. Receive info from another cooperating process. (_pinfo::commune_send): Define. Send info to another cooperating process. (_pinfo::cmdline): Define. Determine command line of a given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc (talktome): Communicate with any processes who want to talk to me. (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc since buffers don't need to be propagated to subprocesses. * fhandler_registry.cc: Ditto. * fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. * fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. * miscfuncs.cc (isalpha_array): New array populated with xor values for alpha characters to switch from one case to another. * string.h (cygwin_strcasematch): New asm implementation of case match. * string.h (cygwin_nstrcasematch): New asm implementation of counted case match.
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free (filebuf);
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filebuf = NULL;
bufalloc = (size_t) -1;
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cygwin_shared->delqueue.process_queue ();
return 0;
}
void
fhandler_virtual::read (void *ptr, size_t& len)
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{
if (len == 0)
return;
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if (openflags & O_DIROPEN)
{
set_errno (EISDIR);
(ssize_t) len = -1;
return;
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}
if (!filebuf)
{
(ssize_t) len = 0;
return;
}
if ((ssize_t) len > filesize - position)
(ssize_t) len = filesize - position;
if ((ssize_t) len < 0)
(ssize_t) len = 0;
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else
memcpy (ptr, filebuf + position, len);
position += len;
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}
int
fhandler_virtual::write (const void *ptr, size_t len)
{
* net.cc (getdomainname): Change second argument of getdomainname to size_t. * fhandler_proc.cc (proc_listing): Add '.' and '..' to directory listing. (fhandler_proc::open): Change use of mode to flags. If the file does not exist already, fail with EROFS if O_CREAT flag is set. Change EROFS error to EACCES error when writing to a file. Use cmalloc to allocate memory for filebuf. (fhandler_proc::close): Use cfree to free filebuf. (fhandler_proc::get_proc_fhandler): Properly detect attempts to access unknown subdir. * fhandler_process.cc (process_listing): Add '.' and '..' to directory listing. (fhandler_process::open): Use cmalloc to allocate memory for filebuf. (fhandler_process::close): Use cfree to free filebuf. * fhandler_registry.cc (registry_listing): Add . and '..' to directory listing. (fhandler_registry::open): Move check for open for writing before open_key. Use cmalloc to allocate memory for filebuf. (fhandler_registry::close): Use cfree to free filebuf. (fhandler_registry::telldir): Use lower 16 bits of __d_position as position in directory. (fhandler_registry::seekdir): Ditto. * fhandler_virtual.cc (fhandler_virtual::write): Change EROFS error to EACCES error. (fhandler_virtual::open): Set the NOHANDLE flag. (fhandler_virtual::dup): Add call to fhandler_base::dup. Allocate child's filebuf using cmalloc. Copy filebuf from parent to child. (fhandler_virtual::close): Use cfree to free filebuf. (fhandler_virtual::~fhandler_virtual): Ditto. (from Chris Faylor <cgf@redhat.com>). (fhandler_registry::readdir): Add support for '.' and '..' files in subdirectories of /proc/registry. * path.cc (path_conv::check): Do not return ENOENT if a file is not found in /proc.
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set_errno (EACCES);
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return -1;
}
/* low-level open for all proc files */
int
fhandler_virtual::open (path_conv *, int flags, mode_t mode)
{
set_r_binary (1);
set_w_binary (1);
set_has_acls (false);
set_isremote (false);
/* what to do about symlinks? */
set_symlink_p (false);
set_execable_p (not_executable);
set_socket_p (false);
set_flags ((flags & ~O_TEXT) | O_BINARY);
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return 1;
}
int
fhandler_virtual::exists ()
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{
return 0;
}
* autoload.cc: Add dynamic load statements for 'ZwQueryInformationProcess' and 'ZwQueryVirtualMemory'. * fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual from int to size_t. Change type of position member from __off32_t to __off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take an __off64_t argument. Make lseek take an __off64_t argument. Add fill_filebuf method to fhandler_virtual. Add fill_filebuf method to fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf method to fhandler_process. Add saved_pid and saved_p members to fhandler_process. * fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'. (proc_fhandlers array): Ditto. (fhandler_proc::open): Use fill_filebuf to flesh out the file contents. (fhandler_proc::fill_filebuf): New method. (fhandler_proc::format_proc_meminfo): Ditto. (fhandler_proc::format_proc_stat): Ditto. (fhandler_proc::format_proc_uptime): Ditto. * fhandler_process.cc (process_listing): Add 'stat' and 'statm'. (fhandler_process::fstat): Find the _pinfo structure for the process named in the filename. Return ENOENT if the process is no longer around. Set the gid and uid fields of the stat structure. (fhandler_process::open): Store pid and pointer to _pinfo structure in saved_pid and saved_p respectively. Use fill_filebuf to flesh out file contents. (fhandler_proc::fill_filebuf): New method. (format_process_stat): New function. (format_process_status): Ditto. (format_process_statm): Ditto. (get_process_state): Ditto. (get_mem_values): Ditto. * fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_registry::fill_filebuf): New method. * fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_virtual::lseek): Ditto. (fhandler_virtual::fill_filebuf): New method. (fhandler_virtual::fhandler_virtual): Initialise fileid to -1. * wincap.cc: Set flag has_process_io_counters appropriately. * wincap.h: Add flag has_process_io_counters.
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* autoload.cc (GetSecurityInfo): Define new autoload function. (RegQueryInfoKeyA): Ditto. * fhandler.h (fhandler_virtual::fill_filebuf): Change return type to bool. (fhandler_proc::fill_filebuf): Ditto. (fhandler_registry::fill_filebuf): Ditto. (fhandler_process::fill_filebuf): Ditto. (fhandler_registry::value_name): Add new member. (fhandler_registry::close): Add new method. (fhandler_process::p): Remove member. * fhandler_proc.cc (fhandler_proc::open): Add set_nohandle after calling superclass method. Check return value of fill_filebuf. (fhandler_proc::fill_filebuf): Change return type to bool. Add return statement. * fhandler_process.cc (fhandler_process::open): Add set_nohandle after calling superclass method. Remove references to p. Check return value of fill_filebuf. (fhandler_process::fill_filebuf): Change return type to bool. Don't use dereference operator on p. Add return statement. (fhandler_process::format_process_stat): Fix typo. * fhandler_registry.cc: Add static open_key declaration. (fhandler_registry::exists): Assume path is already normalised. Try opening the path as a key in its own right first, before reverting to enumerating subkeys and values of the parent key. (fhandler_registry::fstat): Add additional code to return more relevant information about the registry key/value. (fhandler_registry::readdir): Explicitly set desired access when opening registry key. Remove output of buf from debug_printf format string. (fhandler_registry::open): Use set_io_handle to store registry key handle. Set value_name member. Move code to read a value from the registry to fill_filebuf. Add call to fill_filebuf. (fhandler_registry::close): New method. (fhandler_registry::fill_filebuf): Change return type to bool. Add code to read a value from registry. (fhandler_registry::open_key): Make function static. Use KEY_READ as desired access unless this is the last path component. Check the return value of RegOpenKeyEx for an error instead of hKey. * fhandler_virtual.cc (fhandler_virtual::lseek): Check the return value of fill_filebuf. (fhandler_virtual::open): Remove call to set_nohandle. (fhandler_virtual::fill_filebuf): Change return type to bool. Add return statement. * security.cc (get_nt_object_attribute): New function. (get_object_attribute): New function. * security.h (get_object_attribute): New function declaration.
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bool
* autoload.cc: Add dynamic load statements for 'ZwQueryInformationProcess' and 'ZwQueryVirtualMemory'. * fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual from int to size_t. Change type of position member from __off32_t to __off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take an __off64_t argument. Make lseek take an __off64_t argument. Add fill_filebuf method to fhandler_virtual. Add fill_filebuf method to fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf method to fhandler_process. Add saved_pid and saved_p members to fhandler_process. * fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'. (proc_fhandlers array): Ditto. (fhandler_proc::open): Use fill_filebuf to flesh out the file contents. (fhandler_proc::fill_filebuf): New method. (fhandler_proc::format_proc_meminfo): Ditto. (fhandler_proc::format_proc_stat): Ditto. (fhandler_proc::format_proc_uptime): Ditto. * fhandler_process.cc (process_listing): Add 'stat' and 'statm'. (fhandler_process::fstat): Find the _pinfo structure for the process named in the filename. Return ENOENT if the process is no longer around. Set the gid and uid fields of the stat structure. (fhandler_process::open): Store pid and pointer to _pinfo structure in saved_pid and saved_p respectively. Use fill_filebuf to flesh out file contents. (fhandler_proc::fill_filebuf): New method. (format_process_stat): New function. (format_process_status): Ditto. (format_process_statm): Ditto. (get_process_state): Ditto. (get_mem_values): Ditto. * fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_registry::fill_filebuf): New method. * fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_virtual::lseek): Ditto. (fhandler_virtual::fill_filebuf): New method. (fhandler_virtual::fhandler_virtual): Initialise fileid to -1. * wincap.cc: Set flag has_process_io_counters appropriately. * wincap.h: Add flag has_process_io_counters.
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fhandler_virtual::fill_filebuf ()
{
* autoload.cc (GetSecurityInfo): Define new autoload function. (RegQueryInfoKeyA): Ditto. * fhandler.h (fhandler_virtual::fill_filebuf): Change return type to bool. (fhandler_proc::fill_filebuf): Ditto. (fhandler_registry::fill_filebuf): Ditto. (fhandler_process::fill_filebuf): Ditto. (fhandler_registry::value_name): Add new member. (fhandler_registry::close): Add new method. (fhandler_process::p): Remove member. * fhandler_proc.cc (fhandler_proc::open): Add set_nohandle after calling superclass method. Check return value of fill_filebuf. (fhandler_proc::fill_filebuf): Change return type to bool. Add return statement. * fhandler_process.cc (fhandler_process::open): Add set_nohandle after calling superclass method. Remove references to p. Check return value of fill_filebuf. (fhandler_process::fill_filebuf): Change return type to bool. Don't use dereference operator on p. Add return statement. (fhandler_process::format_process_stat): Fix typo. * fhandler_registry.cc: Add static open_key declaration. (fhandler_registry::exists): Assume path is already normalised. Try opening the path as a key in its own right first, before reverting to enumerating subkeys and values of the parent key. (fhandler_registry::fstat): Add additional code to return more relevant information about the registry key/value. (fhandler_registry::readdir): Explicitly set desired access when opening registry key. Remove output of buf from debug_printf format string. (fhandler_registry::open): Use set_io_handle to store registry key handle. Set value_name member. Move code to read a value from the registry to fill_filebuf. Add call to fill_filebuf. (fhandler_registry::close): New method. (fhandler_registry::fill_filebuf): Change return type to bool. Add code to read a value from registry. (fhandler_registry::open_key): Make function static. Use KEY_READ as desired access unless this is the last path component. Check the return value of RegOpenKeyEx for an error instead of hKey. * fhandler_virtual.cc (fhandler_virtual::lseek): Check the return value of fill_filebuf. (fhandler_virtual::open): Remove call to set_nohandle. (fhandler_virtual::fill_filebuf): Change return type to bool. Add return statement. * security.cc (get_nt_object_attribute): New function. (get_object_attribute): New function. * security.h (get_object_attribute): New function declaration.
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return true;
* autoload.cc: Add dynamic load statements for 'ZwQueryInformationProcess' and 'ZwQueryVirtualMemory'. * fhandler.h: Change type of bufalloc and filesize members of fhandler_virtual from int to size_t. Change type of position member from __off32_t to __off64_t. Add new fileid member to fhandler_virtual class. Make seekdir take an __off64_t argument. Make lseek take an __off64_t argument. Add fill_filebuf method to fhandler_virtual. Add fill_filebuf method to fhandler_proc. Add fill_filebuf method to fhandler_registry. Add fill_filebuf method to fhandler_process. Add saved_pid and saved_p members to fhandler_process. * fhandler_proc.cc (proc_listing_array): Add 'loadavg', 'meminfo', and 'stat'. (proc_fhandlers array): Ditto. (fhandler_proc::open): Use fill_filebuf to flesh out the file contents. (fhandler_proc::fill_filebuf): New method. (fhandler_proc::format_proc_meminfo): Ditto. (fhandler_proc::format_proc_stat): Ditto. (fhandler_proc::format_proc_uptime): Ditto. * fhandler_process.cc (process_listing): Add 'stat' and 'statm'. (fhandler_process::fstat): Find the _pinfo structure for the process named in the filename. Return ENOENT if the process is no longer around. Set the gid and uid fields of the stat structure. (fhandler_process::open): Store pid and pointer to _pinfo structure in saved_pid and saved_p respectively. Use fill_filebuf to flesh out file contents. (fhandler_proc::fill_filebuf): New method. (format_process_stat): New function. (format_process_status): Ditto. (format_process_statm): Ditto. (get_process_state): Ditto. (get_mem_values): Ditto. * fhandler_registry.cc (fhandler_registry::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_registry::fill_filebuf): New method. * fhandler_virtual.cc (fhandler_virtual::seekdir): Change argument type from __off32_t to __off64_t. (fhandler_virtual::lseek): Ditto. (fhandler_virtual::fill_filebuf): New method. (fhandler_virtual::fhandler_virtual): Initialise fileid to -1. * wincap.cc: Set flag has_process_io_counters appropriately. * wincap.h: Add flag has_process_io_counters.
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}