f723909038
* configure: Regenerate. * dcrt0.cc: Conditionalize vfork stuff throughout. * dtable.cc: Ditto. * perthread.h: Ditto. * pipe.cc (fhandler_pipe::close): Ditto. * spawn.cc (spawnve): Ditto. * syscalls.cc (setsid): Ditto. * exceptions.cc (sigpacket::process): Use macro to refer to vfork pid. * debug.cc (verify_handle): Define new function. * debug.h (VerifyHandle): Define new macro. (verify_handle): Declare new function * fhandler.cc (fhandler_base::dup): Verify that dup'ed handle is not supposed to be in use. (fhandler_base::set_inheritance): Ditto. (fhandler_base::fork_fixup): Ditto. * fhandler_socket.cc (fhandler_socket::dup): Ditto. * fhandler_tty.cc (fhandler_tty_slave::open): Ditto. * net.cc (set_socket_inheritance): Ditto. * pinfo.cc (pinfo_fixup_after_exec): Ditto. * sigproc.cc (proc_subproc): Ditto. (sig_send): Ditto. * spawn.cc (spawn_guts): Ditto. * thread.cc (pthread::init_mainthread): Ditto. * pipe.cc (fhandler_pipe::close): Close read_state with ForceCloseHandle since it was protected. (fhandler_pipe::fixup_after_exec): Protect read_state handle. (fhandler_pipe::dup): Correctly close open handles on error condition. Verify that dup'ed handle is not supposed to be in use. (fhandler_pipe::create): Protect read_state.
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/* dtable.h: fd table definition.
|
|
|
|
Copyright 2000, 2001, 2003, 2004 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. */
|
|
|
|
/* Initial and increment values for cygwin's fd table */
|
|
#define NOFILE_INCR 32
|
|
|
|
#include "thread.h"
|
|
#include "sync.h"
|
|
|
|
class suffix_info;
|
|
class fhandler_fifo;
|
|
|
|
#define BFH_OPTS (PC_NULLEMPTY | PC_FULL | PC_POSIX)
|
|
class dtable
|
|
{
|
|
muto *lock_cs;
|
|
fhandler_base **fds;
|
|
#ifdef NEWVFORK
|
|
fhandler_base **fds_on_hold;
|
|
#endif
|
|
fhandler_base **archetypes;
|
|
unsigned narchetypes;
|
|
unsigned farchetype;
|
|
static const int initial_archetype_size = 8;
|
|
int first_fd_for_open;
|
|
int cnt_need_fixup_before;
|
|
void lock () {lock_cs->acquire ();}
|
|
void unlock () {lock_cs->release ();}
|
|
void init_lock ();
|
|
public:
|
|
size_t size;
|
|
|
|
dtable () : archetypes (NULL), narchetypes (0), farchetype (0), first_fd_for_open(3), cnt_need_fixup_before(0) {}
|
|
void init () {first_fd_for_open = 3;}
|
|
|
|
void dec_need_fixup_before ()
|
|
{ if (cnt_need_fixup_before > 0) --cnt_need_fixup_before; }
|
|
void inc_need_fixup_before ()
|
|
{ cnt_need_fixup_before++; }
|
|
bool need_fixup_before ()
|
|
{ return cnt_need_fixup_before > 0; }
|
|
|
|
int vfork_child_dup ();
|
|
void vfork_parent_restore ();
|
|
void vfork_child_fixup ();
|
|
fhandler_base *dup_worker (fhandler_base *oldfh);
|
|
int extend (int howmuch);
|
|
void fixup_before_exec (DWORD win_proc_id);
|
|
void fixup_before_fork (DWORD win_proc_id);
|
|
void fixup_after_fork (HANDLE);
|
|
inline int not_open (int fd)
|
|
{
|
|
lock ();
|
|
int res = fd < 0 || fd >= (int) size || fds[fd] == NULL;
|
|
unlock ();
|
|
return res;
|
|
}
|
|
int find_unused_handle (int start);
|
|
int find_unused_handle () { return find_unused_handle (first_fd_for_open);}
|
|
void release (int fd);
|
|
void init_std_file_from_handle (int fd, HANDLE handle);
|
|
int dup2 (int oldfd, int newfd);
|
|
void fixup_after_exec (HANDLE);
|
|
inline fhandler_base *&operator [](int fd) const { return fds[fd]; }
|
|
select_record *select_read (int fd, select_record *s);
|
|
select_record *select_write (int fd, select_record *s);
|
|
select_record *select_except (int fd, select_record *s);
|
|
operator fhandler_base **() {return fds;}
|
|
void stdio_init ();
|
|
void get_debugger_info ();
|
|
void set_file_pointers_for_exec ();
|
|
#ifdef NEWVFORK
|
|
bool in_vfork_cleanup () {return fds_on_hold == fds;}
|
|
#endif
|
|
fhandler_fifo *find_fifo (ATOM);
|
|
fhandler_base *find_archetype (device& dev);
|
|
fhandler_base **add_archetype ();
|
|
void delete_archetype (fhandler_base *);
|
|
friend void dtable_init ();
|
|
friend void __stdcall close_all_files ();
|
|
friend class cygheap_fdmanip;
|
|
friend class cygheap_fdget;
|
|
friend class cygheap_fdnew;
|
|
};
|
|
|
|
fhandler_base *build_fh_dev (const device&, const char * = NULL);
|
|
fhandler_base *build_fh_name (const char *unix_name, HANDLE = NULL, unsigned = 0, suffix_info * = NULL);
|
|
fhandler_base *build_fh_pc (path_conv& pc);
|
|
|
|
void dtable_init (void);
|
|
void stdio_init (void);
|
|
extern dtable fdtab;
|
|
|
|
extern "C" int getfdtabsize ();
|
|
extern "C" void setfdtabsize (int);
|