newlib/winsup/cygwin/fhandler.cc

1465 lines
34 KiB
C++
Raw Normal View History

2000-02-17 20:38:33 +01:00
/* fhandler.cc. See console.cc for fhandler_console functions.
Copyright 1996, 1997, 1998, 1999, 2000 Cygnus Solutions.
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"
2000-02-17 20:38:33 +01:00
#include <sys/fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
#include "cygheap.h"
#include <string.h>
#include <sys/cygwin.h>
#include <signal.h>
#include "cygerrno.h"
#include "fhandler.h"
#include "path.h"
#include "shared_info.h"
#include "host_dependent.h"
#include "perprocess.h"
#include "security.h"
2000-02-17 20:38:33 +01:00
static NO_COPY const int CHUNK_SIZE = 1024; /* Used for crlf conversions */
static char fhandler_disk_dummy_name[] = "some disk file";
struct __cygwin_perfile *perfile_table = NULL;
DWORD binmode = 0;
* Makefile.in: Use variables rather than configure constructs where appropriate. (LIBCOS): Find additional stub library stuff in their own subdirectory. * dcrt0.cc: Convert user_data pointer to static __cygwin_user_data area. (do_global_ctors): Check magic_bisquit for initialization. (dll_crt0_1): First group of premain functions prior to fd initialization. Run second group before calling main. (dll_crt0 ()): New function, called from new initialization code. (dll_crt0 (per_process *uptr)): Call new dll_crt0 () function on initialization. * debug.cc (thread_stub): Initialize bottom of stack with per-thread info. * environ.cc (parse_thing): Use binmode global to control CYGWIN=binmode behavior. * fhandler.cc (fhandler_base::open): Allow explicit setting of __fmode to O_BINARY or O_TEXT to override disk mount settings. * libcmain.cc: Move to lib subdirectory. * libccrt0.cc: Ditto. * dll_main.cc: Ditto. * dll_entry.cc: Ditto. * getopt.c: Ditto. * thread.cc (thread_init_wrapper): Call ExitThread explicitly rather than returning, as a preliminary step towards placing per thread info at the bottom of the stack. * winsup.h: Move per_process class to include/sys/cygwin.h. Declare new dll_crt0(). * include/cygwin/version.h: Bump API minor version. * binmode.c: New file. * textmode.c: Ditto. * lib/_cygwin_crt0_common.cc: Ditto. * lib/crt0.h: Ditto. * lib/cygwin_attach_dll.c: Ditto. * lib/cygwin_crt0.c: Ditto. * lib/dll_entry.cc: Ditto. * lib/dll_main.cc: Ditto. * lib/getopt.c: Ditto. * lib/libcmain.c: Ditto. * lib/premain0.c: Ditto. * lib/premain1.c: Ditto. * lib/premain2.c: Ditto. * lib/premain3.c: Ditto.
2000-07-01 05:51:55 +02:00
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
inline fhandler_base&
fhandler_base::operator =(fhandler_base &x)
{
memcpy (this, &x, sizeof *this);
unix_path_name_ = x.unix_path_name_ ? cstrdup (x.unix_path_name_) : NULL;
win32_path_name_ = x.win32_path_name_ ? cstrdup (x.win32_path_name_) : NULL;
rabuf = NULL;
ralen = 0;
raixget = 0;
raixput = 0;
rabuflen = 0;
return *this;
}
2000-02-17 20:38:33 +01:00
int
fhandler_base::puts_readahead (const char *s, size_t len = (size_t) -1)
{
int success = 1;
while ((*s || (len != (size_t) -1 && len--))
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
&& (success = put_readahead (*s++) > 0))
2000-02-17 20:38:33 +01:00
continue;
return success;
}
int
fhandler_base::put_readahead (char value)
{
char *newrabuf;
if (raixput < rabuflen)
/* Nothing to do */;
else if ((newrabuf = (char *) realloc (rabuf, rabuflen += 32)))
rabuf = newrabuf;
else
return 0;
rabuf[raixput++] = value;
ralen++;
return 1;
}
int
fhandler_base::get_readahead ()
{
int chret = -1;
if (raixget < ralen)
chret = ((unsigned char)rabuf[raixget++]) & 0xff;
/* FIXME - not thread safe */
if (raixget >= ralen)
raixget = raixput = ralen = 0;
return chret;
}
int
fhandler_base::peek_readahead (int queryput)
{
int chret = -1;
if (!queryput && raixget < ralen)
chret = ((unsigned char) rabuf[raixget]) & 0xff;
else if (queryput && raixput > 0)
chret = ((unsigned char) rabuf[raixput - 1]) & 0xff;
return chret;
}
void
fhandler_base::set_readahead_valid (int val, int ch = -1)
{
if (!val)
ralen = raixget = raixput = 0;
if (ch != -1)
put_readahead(ch);
}
int
fhandler_base::eat_readahead (int n)
{
int oralen = ralen;
if (n < 0)
n = ralen;
if (n > 0 && ralen)
{
if ((int) (ralen -= n) < 0)
2000-02-17 20:38:33 +01:00
ralen = 0;
if (raixget >= ralen)
raixget = raixput = ralen = 0;
else if (raixput > ralen)
raixput = ralen;
}
return oralen;
}
int
fhandler_base::get_readahead_into_buffer (char *buf, size_t buflen)
{
int ch;
int copied_chars = 0;
while (buflen)
if ((ch = get_readahead ()) < 0)
break;
else
{
buf[copied_chars++] = (unsigned char)(ch & 0xff);
buflen--;
}
return copied_chars;
}
2000-02-17 20:38:33 +01:00
/**********************************************************************/
/* fhandler_base */
/* Record the file name.
Filenames are used mostly for debugging messages, and it's hoped that
in cases where the name is really required, the filename wouldn't ever
be too long (e.g. devices or some such).
*/
void
fhandler_base::set_name (const char *unix_path, const char *win32_path, int unit)
2000-02-17 20:38:33 +01:00
{
if (!no_free_names ())
{
if (unix_path_name_ != NULL && unix_path_name_ != fhandler_disk_dummy_name)
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
cfree (unix_path_name_);
2000-02-17 20:38:33 +01:00
if (win32_path_name_ != NULL && unix_path_name_ != fhandler_disk_dummy_name)
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
cfree (win32_path_name_);
2000-02-17 20:38:33 +01:00
}
unix_path_name_ = win32_path_name_ = NULL;
if (unix_path == NULL || !*unix_path)
2000-02-17 20:38:33 +01:00
return;
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
unix_path_name_ = cstrdup (unix_path);
2000-02-17 20:38:33 +01:00
if (unix_path_name_ == NULL)
{
system_printf ("fatal error. strdup failed");
exit (ENOMEM);
}
if (win32_path)
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
win32_path_name_ = cstrdup (win32_path);
2000-02-17 20:38:33 +01:00
else
{
const char *fmt = get_native_name ();
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
win32_path_name_ = (char *) cmalloc (HEAP_STR, strlen(fmt) + 16);
2000-02-17 20:38:33 +01:00
__small_sprintf (win32_path_name_, fmt, unit);
}
if (win32_path_name_ == NULL)
{
system_printf ("fatal error. strdup failed");
exit (ENOMEM);
}
}
/* Normal file i/o handlers. */
/* Cover function to ReadFile to achieve (as much as possible) Posix style
semantics and use of errno. */
int
fhandler_base::raw_read (void *ptr, size_t ulen)
{
DWORD bytes_read;
if (!ReadFile (get_handle(), ptr, ulen, &bytes_read, 0))
{
int errcode;
/* Some errors are not really errors. Detect such cases here. */
errcode = GetLastError ();
switch (errcode)
{
case ERROR_BROKEN_PIPE:
/* This is really EOF. */
bytes_read = 0;
break;
case ERROR_MORE_DATA:
/* `bytes_read' is supposedly valid. */
break;
default:
syscall_printf ("ReadFile %s failed, %E", unix_path_name_);
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
__seterrno_from_win_error (errcode);
2000-02-17 20:38:33 +01:00
return -1;
break;
}
}
return bytes_read;
}
/* Cover function to WriteFile to provide Posix interface and semantics
(as much as possible). */
int
fhandler_base::raw_write (const void *ptr, size_t len)
{
DWORD bytes_written;
if (!WriteFile (get_handle(), ptr, len, &bytes_written, 0))
{
if (GetLastError () == ERROR_DISK_FULL && bytes_written > 0)
return bytes_written;
__seterrno ();
if (get_errno () == EPIPE)
raise (SIGPIPE);
return -1;
}
return bytes_written;
}
#define ACCFLAGS(x) (x & (O_RDONLY | O_WRONLY | O_RDWR))
int
fhandler_base::get_default_fmode (int flags)
{
if (perfile_table)
{
size_t nlen = strlen (get_name ());
unsigned accflags = ACCFLAGS (flags);
for (__cygwin_perfile *pf = perfile_table; pf->name; pf++)
{
size_t pflen = strlen (pf->name);
const char *stem = get_name () + nlen - pflen;
if (pflen > nlen || (stem != get_name () && !isdirsep (stem[-1])))
continue;
2000-07-09 18:21:55 +02:00
else if (ACCFLAGS (pf->flags) == accflags && strcasematch (stem, pf->name))
return pf->flags & ~(O_RDONLY | O_WRONLY | O_RDWR);
}
}
return __fmode;
}
2000-02-17 20:38:33 +01:00
/* Open system call handler function.
Path is now already checked for symlinks */
int
fhandler_base::open (int flags, mode_t mode)
{
int res = 0;
HANDLE x;
int file_attributes;
int shared;
int creation_distribution;
syscall_printf ("(%s, %p)", get_win32_name (), flags);
if (get_win32_name () == NULL)
{
set_errno (ENOENT);
goto done;
}
if (get_device () == FH_TAPE)
{
access_ = GENERIC_READ | GENERIC_WRITE;
}
else if ((flags & (O_RDONLY | O_WRONLY | O_RDWR)) == O_RDONLY)
{
access_ = GENERIC_READ;
}
else if ((flags & (O_RDONLY | O_WRONLY | O_RDWR)) == O_WRONLY)
{
access_ = GENERIC_WRITE;
}
else
{
access_ = GENERIC_READ | GENERIC_WRITE;
}
/* FIXME: O_EXCL handling? */
if ((flags & O_TRUNC) && ((flags & O_ACCMODE) != O_RDONLY))
{
if (flags & O_CREAT)
{
creation_distribution = CREATE_ALWAYS;
}
else
{
creation_distribution = TRUNCATE_EXISTING;
}
}
else if (flags & O_CREAT)
creation_distribution = OPEN_ALWAYS;
else
creation_distribution = OPEN_EXISTING;
if ((flags & O_EXCL) && (flags & O_CREAT))
{
creation_distribution = CREATE_NEW;
}
if (flags & O_APPEND)
set_append_p();
/* These flags are host dependent. */
shared = host_dependent.shared;
file_attributes = FILE_ATTRIBUTE_NORMAL;
if (flags & O_DIROPEN)
file_attributes |= FILE_FLAG_BACKUP_SEMANTICS;
if (get_device () == FH_SERIAL)
file_attributes |= FILE_FLAG_OVERLAPPED;
x = CreateFileA (get_win32_name (), access_, shared,
&sec_none, creation_distribution,
file_attributes,
0);
syscall_printf ("%d = CreateFileA (%s, %p, %p, %p, %p, %p, 0)",
x,
get_win32_name (), access_, shared,
&sec_none, creation_distribution,
file_attributes);
if (x == INVALID_HANDLE_VALUE)
{
if (GetLastError () == ERROR_INVALID_HANDLE)
set_errno (ENOENT);
else
__seterrno ();
goto done;
}
// Attributes may be set only if a file is _really_ created.
if (flags & O_CREAT && get_device () == FH_DISK
&& GetLastError () != ERROR_ALREADY_EXISTS)
2000-02-17 20:38:33 +01:00
set_file_attribute (has_acls (), get_win32_name (), mode);
namehash_ = hash_path_name (0, get_win32_name ());
set_io_handle (x);
int bin;
int fmode;
if ((bin = flags & (O_BINARY | O_TEXT)))
/* nothing to do */;
else if ((fmode = get_default_fmode (flags)) & O_BINARY)
* Makefile.in: Use variables rather than configure constructs where appropriate. (LIBCOS): Find additional stub library stuff in their own subdirectory. * dcrt0.cc: Convert user_data pointer to static __cygwin_user_data area. (do_global_ctors): Check magic_bisquit for initialization. (dll_crt0_1): First group of premain functions prior to fd initialization. Run second group before calling main. (dll_crt0 ()): New function, called from new initialization code. (dll_crt0 (per_process *uptr)): Call new dll_crt0 () function on initialization. * debug.cc (thread_stub): Initialize bottom of stack with per-thread info. * environ.cc (parse_thing): Use binmode global to control CYGWIN=binmode behavior. * fhandler.cc (fhandler_base::open): Allow explicit setting of __fmode to O_BINARY or O_TEXT to override disk mount settings. * libcmain.cc: Move to lib subdirectory. * libccrt0.cc: Ditto. * dll_main.cc: Ditto. * dll_entry.cc: Ditto. * getopt.c: Ditto. * thread.cc (thread_init_wrapper): Call ExitThread explicitly rather than returning, as a preliminary step towards placing per thread info at the bottom of the stack. * winsup.h: Move per_process class to include/sys/cygwin.h. Declare new dll_crt0(). * include/cygwin/version.h: Bump API minor version. * binmode.c: New file. * textmode.c: Ditto. * lib/_cygwin_crt0_common.cc: Ditto. * lib/crt0.h: Ditto. * lib/cygwin_attach_dll.c: Ditto. * lib/cygwin_crt0.c: Ditto. * lib/dll_entry.cc: Ditto. * lib/dll_main.cc: Ditto. * lib/getopt.c: Ditto. * lib/libcmain.c: Ditto. * lib/premain0.c: Ditto. * lib/premain1.c: Ditto. * lib/premain2.c: Ditto. * lib/premain3.c: Ditto.
2000-07-01 05:51:55 +02:00
bin = O_BINARY;
else if (fmode & O_TEXT)
* Makefile.in: Use variables rather than configure constructs where appropriate. (LIBCOS): Find additional stub library stuff in their own subdirectory. * dcrt0.cc: Convert user_data pointer to static __cygwin_user_data area. (do_global_ctors): Check magic_bisquit for initialization. (dll_crt0_1): First group of premain functions prior to fd initialization. Run second group before calling main. (dll_crt0 ()): New function, called from new initialization code. (dll_crt0 (per_process *uptr)): Call new dll_crt0 () function on initialization. * debug.cc (thread_stub): Initialize bottom of stack with per-thread info. * environ.cc (parse_thing): Use binmode global to control CYGWIN=binmode behavior. * fhandler.cc (fhandler_base::open): Allow explicit setting of __fmode to O_BINARY or O_TEXT to override disk mount settings. * libcmain.cc: Move to lib subdirectory. * libccrt0.cc: Ditto. * dll_main.cc: Ditto. * dll_entry.cc: Ditto. * getopt.c: Ditto. * thread.cc (thread_init_wrapper): Call ExitThread explicitly rather than returning, as a preliminary step towards placing per thread info at the bottom of the stack. * winsup.h: Move per_process class to include/sys/cygwin.h. Declare new dll_crt0(). * include/cygwin/version.h: Bump API minor version. * binmode.c: New file. * textmode.c: Ditto. * lib/_cygwin_crt0_common.cc: Ditto. * lib/crt0.h: Ditto. * lib/cygwin_attach_dll.c: Ditto. * lib/cygwin_crt0.c: Ditto. * lib/dll_entry.cc: Ditto. * lib/dll_main.cc: Ditto. * lib/getopt.c: Ditto. * lib/libcmain.c: Ditto. * lib/premain0.c: Ditto. * lib/premain1.c: Ditto. * lib/premain2.c: Ditto. * lib/premain3.c: Ditto.
2000-07-01 05:51:55 +02:00
bin = O_TEXT;
2000-02-17 20:38:33 +01:00
else if (get_device () == FH_DISK)
bin = get_w_binary () || get_r_binary ();
else
bin = (binmode == O_BINARY) || get_w_binary () || get_r_binary ();
2000-02-17 20:38:33 +01:00
if (bin & O_TEXT)
bin = 0;
set_flags (flags | (bin ? O_BINARY : O_TEXT));
2000-02-17 20:38:33 +01:00
set_r_binary (bin);
set_w_binary (bin);
syscall_printf ("filemode set to %s", bin ? "binary" : "text");
if (get_device () != FH_TAPE
&& get_device () != FH_FLOPPY
&& get_device () != FH_SERIAL)
{
if (flags & O_APPEND)
SetFilePointer (get_handle(), 0, 0, FILE_END);
else
SetFilePointer (get_handle(), 0, 0, FILE_BEGIN);
}
res = 1;
done:
syscall_printf ("%d = fhandler_base::open (%s, %p)", res, get_win32_name (),
flags);
return res;
}
/* states:
open buffer in binary mode? Just do the read.
open buffer in text mode? Scan buffer for control zs and handle
the first one found. Then scan buffer, converting every \r\n into
an \n. If last char is an \r, look ahead one more char, if \n then
modify \r, if not, remember char.
*/
int
fhandler_base::read (void *in_ptr, size_t in_len)
{
int len = (int) in_len;
char *ctrlzpos;
char *ptr = (char *) in_ptr;
int c;
int copied_chars = 0;
while (len)
if ((c = get_readahead ()) < 0)
break;
else
{
ptr[copied_chars++] = (unsigned char) (c & 0xff);
len--;
}
if (len)
{
int readlen = raw_read (ptr + copied_chars, len);
if (copied_chars == 0)
copied_chars = readlen; /* Propagate error or EOF */
else if (readlen > 0) /* FIXME: should flag EOF for next read */
copied_chars += readlen;
}
if (copied_chars <= 0)
2000-02-17 20:38:33 +01:00
return copied_chars;
if (get_r_binary ())
{
debug_printf ("returning %d chars, binary mode", copied_chars);
return copied_chars;
}
2000-02-17 20:38:33 +01:00
/* Scan buffer for a control-z and shorten the buffer to that length */
ctrlzpos = (char *) memchr ((char *) ptr, 0x1a, copied_chars);
if (ctrlzpos)
{
lseek ((ctrlzpos - ((char *) ptr + copied_chars)), SEEK_CUR);
copied_chars = ctrlzpos - (char *) ptr;
}
if (copied_chars == 0)
{
debug_printf ("returning 0 chars, text mode, CTRL-Z found");
return 0;
}
2000-02-17 20:38:33 +01:00
/* Scan buffer and turn \r\n into \n */
register char *src= (char *) ptr;
register char *dst = (char *) ptr;
register char *end = src + copied_chars - 1;
/* Read up to the last but one char - the last char needs special handling */
while (src < end)
{
*dst = *src++;
if (*dst != '\r' || *src != '\n')
dst++;
}
c = *src;
/* if last char is a '\r' then read one more to see if we should
translate this one too */
if (c == '\r')
{
char c1 = 0;
len = raw_read (&c1, 1);
if (len <= 0)
/* nothing */;
else if (c1 == '\n')
c = '\n';
else
set_readahead_valid (1, c1);
}
*dst++ = c;
copied_chars = dst - (char *) ptr;
#ifndef NOSTRACE
if (strace.active)
2000-02-17 20:38:33 +01:00
{
char buf[16 * 6 + 1];
char *p = buf;
for (int i = 0; i < copied_chars && i < 16; ++i)
{
unsigned char c = ((unsigned char *) ptr)[i];
/* >= 33 so space prints in hex */
__small_sprintf (p, c >= 33 && c <= 127 ? " %c" : " %p", c);
p += strlen (p);
}
debug_printf ("read %d bytes (%s%s)", copied_chars, buf,
copied_chars > 16 ? " ..." : "");
}
#endif
debug_printf ("returning %d chars, text mode", copied_chars);
2000-02-17 20:38:33 +01:00
return copied_chars;
}
int
fhandler_base::write (const void *ptr, size_t len)
{
int res;
if (get_append_p ())
SetFilePointer (get_handle(), 0, 0, FILE_END);
else if (os_being_run != winNT && get_check_win95_lseek_bug ())
{
/* Note: this bug doesn't happen on NT4, even though the documentation
for WriteFile() says that it *may* happen on any OS. */
int actual_length, current_position;
set_check_win95_lseek_bug (0); /* don't do it again */
actual_length = GetFileSize (get_handle (), NULL);
current_position = SetFilePointer (get_handle (), 0, 0, FILE_CURRENT);
if (current_position > actual_length)
{
/* Oops, this is the bug case - Win95 uses whatever is on the disk
instead of some known (safe) value, so we must seek back and
fill in the gap with zeros. - DJ */
char zeros[512];
int number_of_zeros_to_write = current_position - actual_length;
memset(zeros, 0, 512);
SetFilePointer (get_handle (), 0, 0, FILE_END);
while (number_of_zeros_to_write > 0)
{
DWORD zeros_this_time = (number_of_zeros_to_write > 512
? 512 : number_of_zeros_to_write);
DWORD written;
if (!WriteFile (get_handle (), zeros, zeros_this_time, &written,
NULL))
{
__seterrno ();
if (get_errno () == EPIPE)
raise (SIGPIPE);
/* This might fail, but it's the best we can hope for */
SetFilePointer (get_handle (), current_position, 0, FILE_BEGIN);
return -1;
}
if (written < zeros_this_time) /* just in case */
{
set_errno (ENOSPC);
/* This might fail, but it's the best we can hope for */
SetFilePointer (get_handle (), current_position, 0, FILE_BEGIN);
return -1;
}
number_of_zeros_to_write -= written;
}
}
}
if (get_w_binary ())
{
debug_printf ("binary write");
2000-02-17 20:38:33 +01:00
res = raw_write (ptr, len);
}
else
{
debug_printf ("text write");
2000-02-17 20:38:33 +01:00
/* This is the Microsoft/DJGPP way. Still not ideal, but it's
compatible.
Modified slightly by CGF 2000-10-07 */
2000-02-17 20:38:33 +01:00
int left_in_data = len;
char *data = (char *)ptr;
res = 0;
2000-02-17 20:38:33 +01:00
while (left_in_data > 0)
{
char buf[CHUNK_SIZE + 1], *buf_ptr = buf;
2000-02-17 20:38:33 +01:00
int left_in_buf = CHUNK_SIZE;
while (left_in_buf > 0 && left_in_data > 0)
{
char ch = *data++;
if (ch == '\n')
2000-02-17 20:38:33 +01:00
{
*buf_ptr++ = '\r';
left_in_buf--;
}
*buf_ptr++ = ch;
2000-02-17 20:38:33 +01:00
left_in_buf--;
left_in_data--;
if (left_in_data > 0 && ch == '\r' && *data == '\n')
{
*buf_ptr++ = *data++;
left_in_buf--;
left_in_data--;
}
2000-02-17 20:38:33 +01:00
}
/* We've got a buffer-full, or we're out of data. Write it out */
int nbytes;
2000-02-17 20:38:33 +01:00
int want = buf_ptr - buf;
if ((nbytes = raw_write (buf, want)) == want)
2000-02-17 20:38:33 +01:00
{
/* Keep track of how much written not counting additional \r's */
res = data - (char *)ptr;
continue;
2000-02-17 20:38:33 +01:00
}
if (nbytes == -1)
res = -1; /* Error */
else
res += nbytes; /* Partial write. Return total bytes written. */
break; /* All done */
}
2000-02-17 20:38:33 +01:00
}
debug_printf ("%d = write (%p, %d)", res, ptr, len);
2000-02-17 20:38:33 +01:00
return res;
}
off_t
fhandler_base::lseek (off_t offset, int whence)
{
off_t res;
/* Seeks on text files is tough, we rewind and read till we get to the
right place. */
if (whence != SEEK_CUR || offset != 0)
{
if (whence == SEEK_CUR)
offset -= ralen - raixget;
set_readahead_valid (0);
}
debug_printf ("lseek (%s, %d, %d)", unix_path_name_, offset, whence);
#if 0 /* lseek has no business messing about with text-mode stuff */
if (!get_r_binary ())
{
int newplace;
if (whence == 0)
{
newplace = offset;
}
else if (whence ==1)
{
newplace = rpos + offset;
}
else
{
/* Seek from the end of a file.. */
if (rsize == -1)
{
/* Find the size of the file by reading till the end */
char b[CHUNK_SIZE];
while (read (b, sizeof (b)) > 0)
;
rsize = rpos;
}
newplace = rsize + offset;
}
if (rpos > newplace)
{
SetFilePointer (handle, 0, 0, 0);
rpos = 0;
}
/* You can never shrink something more than 50% by turning CRLF into LF,
so we binary chop looking for the right place */
while (rpos < newplace)
{
char b[CHUNK_SIZE];
size_t span = (newplace - rpos) / 2;
if (span == 0)
span = 1;
if (span > sizeof (b))
span = sizeof (b);
debug_printf ("lseek (%s, %d, %d) span %d, rpos %d newplace %d",
name, offset, whence,span,rpos, newplace);
read (b, span);
}
debug_printf ("Returning %d", newplace);
return newplace;
}
#endif /* end of deleted code dealing with text mode */
DWORD win32_whence = whence == SEEK_SET ? FILE_BEGIN
: (whence == SEEK_CUR ? FILE_CURRENT : FILE_END);
res = SetFilePointer (get_handle(), offset, 0, win32_whence);
if (res == -1)
{
__seterrno ();
}
else
{
/* When next we write(), we will check to see if *this* seek went beyond
the end of the file, and back-seek and fill with zeros if so - DJ */
set_check_win95_lseek_bug ();
/* If this was a SEEK_CUR with offset 0, we still might have
readahead that we have to take into account when calculating
the actual position for the application. */
if (whence == SEEK_CUR)
res -= ralen - raixget;
}
return res;
}
int
fhandler_base::close (void)
{
int res = -1;
syscall_printf ("handle %p", get_handle());
if (CloseHandle (get_handle()))
res = 0;
else
{
paranoid_printf ("CloseHandle (%d <%s>) failed", get_handle(),
get_name ());
__seterrno ();
}
return res;
}
int
fhandler_base::ioctl (unsigned int cmd, void *buf)
{
if (cmd == FIONBIO)
syscall_printf ("ioctl (FIONBIO, %p)", buf);
else
syscall_printf ("ioctl (%x, %p)", cmd, buf);
set_errno (EINVAL);
return -1;
}
int
fhandler_base::lock (int, struct flock *)
{
set_errno (ENOSYS);
return -1;
}
extern "C" char * __stdcall
rootdir(char *full_path)
{
/* Possible choices:
* d:... -> d:/
* \\server\share... -> \\server\share\
* else current drive.
*/
char *root=full_path;
if (full_path[1] == ':')
strcpy (full_path + 2, "\\");
else if (full_path[0] == '\\' && full_path[1] == '\\')
{
char *cp = full_path + 2;
while (*cp && *cp != '\\')
cp++;
if (!*cp)
{
set_errno (ENOTDIR);
return NULL;
}
cp++;
while (*cp && *cp != '\\')
cp++;
strcpy (cp, "\\");
}
else
root = NULL;
return root;
}
int
fhandler_disk_file::fstat (struct stat *buf)
{
int res = 0; // avoid a compiler warning
BY_HANDLE_FILE_INFORMATION local;
save_errno saved_errno;
2000-02-17 20:38:33 +01:00
memset (buf, 0, sizeof (*buf));
if (is_device ())
return stat_dev (get_device (), get_unit (), get_namehash (), buf);
/* NT 3.51 seems to have a bug when attempting to get vol serial
numbers. This loop gets around this. */
for (int i = 0; i < 2; i++)
{
if (!(res = GetFileInformationByHandle (get_handle (), &local)))
break;
if (local.dwVolumeSerialNumber && (long) local.dwVolumeSerialNumber != -1)
break;
}
debug_printf ("%d = GetFileInformationByHandle (%s, %d)",
res, get_win32_name (), get_handle ());
if (res == 0)
{
/* GetFileInformationByHandle will fail if it's given stdin/out/err
or a pipe*/
DWORD lsize, hsize;
if (GetFileType (get_handle ()) != FILE_TYPE_DISK)
buf->st_mode = S_IFCHR;
lsize = GetFileSize (get_handle (), &hsize);
if (lsize == 0xffffffff && GetLastError () != NO_ERROR)
buf->st_mode = S_IFCHR;
else
buf->st_size = lsize;
/* We expect these to fail! */
buf->st_mode |= STD_RBITS | STD_WBITS;
buf->st_blksize = S_BLKSIZE;
buf->st_ino = get_namehash ();
syscall_printf ("0 = fstat (, %p)", buf);
return 0;
}
if (!get_win32_name ())
{
saved_errno.set (ENOENT);
2000-02-17 20:38:33 +01:00
return -1;
}
buf->st_atime = to_time_t (&local.ftLastAccessTime);
buf->st_mtime = to_time_t (&local.ftLastWriteTime);
buf->st_ctime = to_time_t (&local.ftCreationTime);
buf->st_nlink = local.nNumberOfLinks;
buf->st_dev = local.dwVolumeSerialNumber;
buf->st_size = local.nFileSizeLow;
/* Allocate some place to determine the root directory. Need to allocate
enough so that rootdir can add a trailing slash if path starts with \\. */
char root[strlen (get_win32_name ()) + 3];
2000-02-17 20:38:33 +01:00
strcpy (root, get_win32_name ());
/* Assume that if a drive has ACL support it MAY have valid "inodes".
It definitely does not have valid inodes if it does not have ACL
support. */
switch (has_acls () ? GetDriveType (rootdir (root)) : DRIVE_UNKNOWN)
{
case DRIVE_FIXED:
case DRIVE_REMOVABLE:
case DRIVE_CDROM:
case DRIVE_RAMDISK:
/* Although the documentation indicates otherwise, it seems like
"inodes" on these devices are persistent, at least across reboots. */
buf->st_ino = local.nFileIndexHigh | local.nFileIndexLow;
break;
default:
/* Either the nFileIndex* fields are unreliable or unavailable. Use the
next best alternative. */
buf->st_ino = get_namehash ();
break;
}
buf->st_blksize = S_BLKSIZE;
buf->st_blocks = ((unsigned long) buf->st_size + S_BLKSIZE-1) / S_BLKSIZE;
2000-02-17 20:38:33 +01:00
/* Using a side effect: get_file_attibutes checks for
directory. This is used, to set S_ISVTX, if needed. */
if (local.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
buf->st_mode |= S_IFDIR;
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
if (!get_file_attribute (has_acls (),
get_win32_name (),
&buf->st_mode,
&buf->st_uid,
&buf->st_gid))
2000-02-17 20:38:33 +01:00
{
2000-02-21 01:31:55 +01:00
/* If read-only attribute is set, modify ntsec return value */
if (local.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
buf->st_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
2000-02-17 20:38:33 +01:00
buf->st_mode &= ~S_IFMT;
if (get_symlink_p ())
buf->st_mode |= S_IFLNK;
else if (get_socket_p ())
buf->st_mode |= S_IFSOCK;
else if (local.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
buf->st_mode |= S_IFDIR;
else
buf->st_mode |= S_IFREG;
}
else
{
buf->st_mode = 0;
buf->st_mode |= STD_RBITS;
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
if (!(local.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
2000-02-17 20:38:33 +01:00
buf->st_mode |= STD_WBITS;
/* | S_IWGRP | S_IWOTH; we don't give write to group etc */
if (get_symlink_p ())
buf->st_mode |= S_IFLNK;
else if (get_socket_p ())
buf->st_mode |= S_IFSOCK;
else
switch (GetFileType (get_handle ()))
{
case FILE_TYPE_CHAR:
case FILE_TYPE_UNKNOWN:
buf->st_mode |= S_IFCHR;
break;
case FILE_TYPE_DISK:
if (local.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
buf->st_mode |= S_IFDIR | STD_XBITS;
else
{
buf->st_mode |= S_IFREG;
if (get_execable_p ())
buf->st_mode |= STD_XBITS;
}
break;
case FILE_TYPE_PIPE:
buf->st_mode |= S_IFSOCK;
break;
}
}
syscall_printf ("0 = fstat (, %p) st_atime=%x st_size=%d, st_mode=%p, st_ino=%d, sizeof=%d",
buf, buf->st_atime, buf->st_size, buf->st_mode,
(int) buf->st_ino, sizeof (*buf));
return 0;
}
void
fhandler_base::init (HANDLE f, DWORD a, mode_t bin)
{
set_io_handle (f);
set_r_binary (bin);
set_w_binary (bin);
access_ = a;
a &= GENERIC_READ | GENERIC_WRITE;
if (a == GENERIC_READ)
set_flags (O_RDONLY);
if (a == GENERIC_WRITE)
set_flags (O_WRONLY);
if (a == (GENERIC_READ | GENERIC_WRITE))
set_flags (O_RDWR);
debug_printf ("created new fhandler_base for handle %p", f);
}
void
fhandler_base::dump (void)
{
paranoid_printf ("here");
}
int
fhandler_base::dup (fhandler_base *child)
{
debug_printf ("in fhandler_base dup");
HANDLE nh;
if (!DuplicateHandle (hMainProc, get_handle(), hMainProc, &nh, 0, TRUE,
DUPLICATE_SAME_ACCESS))
{
system_printf ("dup(%s) failed, handle %x, %E",
get_name (), get_handle());
__seterrno ();
return -1;
}
child->set_io_handle (nh);
return 0;
}
/* Base terminal handlers. These just return errors. */
int
fhandler_base::tcflush (int)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcsendbreak (int)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcdrain (void)
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcflow (int)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcsetattr (int, const struct termios *)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcgetattr (struct termios *)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcsetpgrp (const pid_t)
2000-02-17 20:38:33 +01:00
{
set_errno (ENOTTY);
return -1;
}
int
fhandler_base::tcgetpgrp (void)
{
set_errno (ENOTTY);
return -1;
}
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
void
fhandler_base::operator delete (void *p)
{
cfree (p);
return;
}
2000-02-17 20:38:33 +01:00
/* Normal I/O constructor */
fhandler_base::fhandler_base (DWORD devtype, const char *name, int unit):
access_ (0),
io_handle (NULL),
namehash_ (0),
openflags_ (0),
rabuf (NULL),
ralen (0),
raixget (0),
raixput (0),
rabuflen (0)
{
status = devtype;
int bin = __fmode & O_TEXT ? 0 : 1;
if (status != FH_DISK && status != FH_CONSOLE)
{
if (!get_r_binset ())
set_r_binary (bin);
if (!get_w_binset ())
set_w_binary (bin);
}
unix_path_name_ = win32_path_name_ = NULL;
set_name (name, NULL, unit);
}
/* Normal I/O destructor */
fhandler_base::~fhandler_base (void)
{
if (!no_free_names ())
{
if (unix_path_name_ != NULL && unix_path_name_ != fhandler_disk_dummy_name)
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
cfree (unix_path_name_);
2000-02-17 20:38:33 +01:00
if (win32_path_name_ != NULL && win32_path_name_ != fhandler_disk_dummy_name)
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
cfree (win32_path_name_);
2000-02-17 20:38:33 +01:00
}
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
2000-09-03 06:16:35 +02:00
if (rabuf)
free (rabuf);
2000-02-17 20:38:33 +01:00
unix_path_name_ = win32_path_name_ = NULL;
}
/**********************************************************************/
/* fhandler_disk_file */
fhandler_disk_file::fhandler_disk_file (const char *name) :
fhandler_base (FH_DISK, name)
{
set_cb (sizeof *this);
set_no_free_names ();
unix_path_name_ = win32_path_name_ = fhandler_disk_dummy_name;
}
int
fhandler_disk_file::open (const char *path, int flags, mode_t mode)
{
syscall_printf ("(%s, %p)", path, flags);
/* O_NOSYMLINK is an internal flag for implementing lstat, nothing more. */
path_conv real_path (path, (flags & O_NOSYMLINK) ?
PC_SYM_NOFOLLOW : PC_SYM_FOLLOW);
2000-02-17 20:38:33 +01:00
if (real_path.error &&
(flags & O_NOSYMLINK || real_path.error != ENOENT || !(flags & O_CREAT)))
{
set_errno (real_path.error);
syscall_printf ("0 = fhandler_disk_file::open (%s, %p)", path, flags);
return 0;
}
set_name (path, real_path.get_win32 ());
set_no_free_names (0);
return open (real_path, flags, mode);
}
int
fhandler_disk_file::open (path_conv& real_path, int flags, mode_t mode)
{
if (get_win32_name () == fhandler_disk_dummy_name)
{
win32_path_name_ = real_path.get_win32 ();
set_no_free_names ();
}
/* If necessary, do various other things to see if path is a program. */
if (!real_path.isexec ())
real_path.set_exec (check_execable_p (get_win32_name ()));
if (real_path.isbinary ())
{
set_r_binary (1);
set_w_binary (1);
}
set_has_acls (real_path.has_acls ());
if (real_path.file_attributes () != (DWORD)-1
&& (real_path.file_attributes () & FILE_ATTRIBUTE_DIRECTORY))
flags |= O_DIROPEN;
2000-02-17 20:38:33 +01:00
int res = this->fhandler_base::open (flags, mode);
if (!res)
goto out;
extern BOOL allow_ntea;
extern BOOL allow_ntsec;
2000-02-17 20:38:33 +01:00
if (!real_path.isexec () && !allow_ntea
&& (!allow_ntsec || !real_path.has_acls ())
&& GetFileType (get_handle ()) == FILE_TYPE_DISK)
2000-02-17 20:38:33 +01:00
{
DWORD done;
char magic[3];
/* FIXME should we use /etc/magic ? */
magic[0] = magic[1] = magic[2] = '\0';
ReadFile (get_handle (), magic, 3, &done, 0);
if ((magic[0] == ':' && magic[1] == '\n') ||
(magic[0] == '#' && magic[1] == '!'))
real_path.set_exec ();
if (!(flags & O_APPEND))
SetFilePointer (get_handle(), 0, 0, FILE_BEGIN);
}
if (flags & O_APPEND)
SetFilePointer (get_handle(), 0, 0, FILE_END);
set_symlink_p (real_path.issymlink ());
set_execable_p (real_path.isexec ());
set_socket_p (real_path.issocket ());
out:
syscall_printf ("%d = fhandler_disk_file::open (%s, %p)", res,
get_win32_name (), flags);
return res;
}
int
fhandler_disk_file::close ()
{
int res;
if ((res = this->fhandler_base::close ()) == 0)
cygwin_shared->delqueue.process_queue ();
return res;
}
/*
* FIXME !!!
* The correct way to do this to get POSIX locking
* semantics is to keep a linked list of posix lock
* requests and map them into Win32 locks. The problem
* is that Win32 does not deal correctly with overlapping
* lock requests. Also another pain is that Win95 doesn't do
* non-blocking or non exclusive locks at all. For '95 just
* convert all lock requests into blocking,exclusive locks.
* This shouldn't break many apps but denying all locking
* would.
* For now just convert to Win32 locks and hope for the best.
*/
int
fhandler_disk_file::lock (int cmd, struct flock *fl)
{
int win32_start;
int win32_len;
2000-02-17 20:38:33 +01:00
DWORD win32_upper;
DWORD startpos;
/*
* We don't do getlck calls yet.
*/
if (cmd == F_GETLK)
{
set_errno (ENOSYS);
return -1;
}
/*
* Calculate where in the file to start from,
* then adjust this by fl->l_start.
*/
switch (fl->l_whence)
{
case SEEK_SET:
startpos = 0;
break;
case SEEK_CUR:
if ((off_t) (startpos = lseek (0, SEEK_CUR)) == (off_t)-1)
2000-02-17 20:38:33 +01:00
return -1;
break;
case SEEK_END:
{
BY_HANDLE_FILE_INFORMATION finfo;
if (GetFileInformationByHandle (get_handle(), &finfo) == 0)
{
__seterrno ();
return -1;
}
startpos = finfo.nFileSizeLow; /* Nowhere to keep high word */
break;
}
default:
set_errno (EINVAL);
return -1;
}
/*
* Now the fun starts. Adjust the start and length
* fields until they make sense.
*/
win32_start = startpos + fl->l_start;
if (fl->l_len < 0)
{
win32_start -= fl->l_len;
win32_len = -fl->l_len;
}
else
win32_len = fl->l_len;
if (win32_start < 0)
{
/* watch the signs! */
win32_len -= -win32_start;
2000-02-17 20:38:33 +01:00
if (win32_len <= 0)
{
/* Failure ! */
set_errno (EINVAL);
return -1;
}
win32_start = 0;
}
/*
* Special case if len == 0 for POSIX means lock
* to the end of the entire file (and all future extensions).
*/
if (win32_len == 0)
{
win32_len = 0xffffffff;
win32_upper = host_dependent.win32_upper;
}
else
win32_upper = 0;
BOOL res;
if (os_being_run == winNT)
{
DWORD lock_flags = (cmd == F_SETLK) ? LOCKFILE_FAIL_IMMEDIATELY : 0;
lock_flags |= (fl->l_type == F_WRLCK) ? LOCKFILE_EXCLUSIVE_LOCK : 0;
OVERLAPPED ov;
ov.Internal = 0;
ov.InternalHigh = 0;
ov.Offset = (DWORD)win32_start;
2000-02-17 20:38:33 +01:00
ov.OffsetHigh = 0;
ov.hEvent = (HANDLE) 0;
if (fl->l_type == F_UNLCK)
{
res = UnlockFileEx (get_handle (), 0, (DWORD)win32_len, win32_upper, &ov);
2000-02-17 20:38:33 +01:00
}
else
{
res = LockFileEx (get_handle (), lock_flags, 0, (DWORD)win32_len,
2000-02-17 20:38:33 +01:00
win32_upper, &ov);
/* Deal with the fail immediately case. */
/*
* FIXME !! I think this is the right error to check for
* but I must admit I haven't checked....
*/
if ((res == 0) && (lock_flags & LOCKFILE_FAIL_IMMEDIATELY) &&
(GetLastError () == ERROR_LOCK_FAILED))
{
set_errno (EAGAIN);
return -1;
}
}
}
else
{
/* Windows 95 -- use primitive lock call */
if (fl->l_type == F_UNLCK)
res = UnlockFile (get_handle (), (DWORD)win32_start, 0, (DWORD)win32_len,
2000-02-17 20:38:33 +01:00
win32_upper);
else
res = LockFile (get_handle (), (DWORD)win32_start, 0, (DWORD)win32_len, win32_upper);
2000-02-17 20:38:33 +01:00
}
if (res == 0)
{
__seterrno ();
return -1;
}
return 0;
}
/* Perform various heuristics on PATH to see if it's a program. */
int
fhandler_disk_file::check_execable_p (const char *path)
{
int len = strlen (path);
const char *ch = path + (len > 4 ? len - 4 : len);
if (strcasematch (".exe", ch)
|| strcasematch (".bat", ch)
|| strcasematch (".com", ch))
return 1;
return 0;
}
/**********************************************************************/
/* /dev/null */
fhandler_dev_null::fhandler_dev_null (const char *name) :
fhandler_base (FH_NULL, name)
{
set_cb (sizeof *this);
}
void
fhandler_dev_null::dump (void)
{
paranoid_printf ("here");
}
/**********************************************************************/
/* fhandler_pipe */
fhandler_pipe::fhandler_pipe (const char *name, DWORD devtype) :
fhandler_base (devtype, name)
2000-02-17 20:38:33 +01:00
{
set_cb (sizeof *this);
}
off_t
fhandler_pipe::lseek (off_t offset, int whence)
{
debug_printf ("(%d, %d)", offset, whence);
set_errno (ESPIPE);
return -1;
}
#ifdef DEBUGGING
#define nameparm name
#else
#define nameparm
#endif
void
fhandler_base::set_inheritance (HANDLE &h, int not_inheriting, const char *nameparm)
#undef nameparm
2000-02-17 20:38:33 +01:00
{
HANDLE newh;
if (!DuplicateHandle (hMainProc, h, hMainProc, &newh, 0, !not_inheriting,
DUPLICATE_SAME_ACCESS))
debug_printf ("DuplicateHandle %E");
#ifndef DEBUGGING
else
{
hclose (h);
2000-02-17 20:38:33 +01:00
h = newh;
}
#else
else if (!name)
{
hclose (h);
2000-02-17 20:38:33 +01:00
h = newh;
}
else
/* FIXME: This won't work with sockets */
2000-02-17 20:38:33 +01:00
{
ForceCloseHandle2 (h, name);
h = newh;
ProtectHandle2 (h, name);
}
#endif
}
void
fhandler_base::fork_fixup (HANDLE parent, HANDLE &h, const char *name)
{
if (!DuplicateHandle (parent, h, hMainProc, &h, 0, !get_close_on_exec (),
DUPLICATE_SAME_ACCESS))
system_printf ("%s - %E, handle %s<%p>", get_name (), name, h);
}
void
fhandler_base::set_close_on_exec (int val)
{
set_inheritance (io_handle, val);
set_close_on_exec_flag (val);
debug_printf ("set close_on_exec for %s to %d", get_name (), val);
}
void
fhandler_base::fixup_after_fork (HANDLE parent)
{
debug_printf ("inheriting '%s' from parent", get_name ());
fork_fixup (parent, io_handle, "io_handle");
}