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posixwin.scm
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posixwin.scm
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;;;; posixwin.scm - Miscellaneous file- and process-handling routines, available on Windows
;
; Copyright (c) 2008-2011, The Chicken Team
; Copyright (c) 2000-2007, Felix L. Winkelmann
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
; conditions are met:
;
; Redistributions of source code must retain the above copyright notice, this list of conditions and the following
; disclaimer.
; Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
; disclaimer in the documentation and/or other materials provided with the distribution.
; Neither the name of the author nor the names of its contributors may be used to endorse or promote
; products derived from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
; AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
; Not implemented:
;
; open/noctty open/nonblock open/fsync open/sync
; perm/isvtx perm/isuid perm/isgid
; file-select
; symbolic-link?
; set-signal-mask! signal-mask signal-masked? signal-mask! signal-unmask!
; user-information group-information get-groups set-groups! initialize-groups
; errno/wouldblock
; change-file-owner
; current-user-id current-group-id current-effective-user-id current-effective-group-id
; current-effective-user-name
; set-user-id! set-group-id!
; create-session
; process-group-id set-process-group-id!
; create-symbolic-link read-symbolic-link
; file-truncate
; file-lock file-lock/blocking file-unlock file-test-lock
; create-fifo fifo?
; prot/...
; map/...
; map-file-to-memory unmap-file-from-memory memory-mapped-file-pointer memory-mapped-file?
; set-alarm!
; terminal-port? terminal-name
; process-fork process-wait
; parent-process-id
; process-signal
; Issues
;
; - Use of a UTF8 encoded string will not work properly. Windows uses a
; 16-bit UNICODE character string encoding and specialized system calls
; and/or structure settings for the use of such strings.
(declare
(unit posix)
(uses scheduler irregex extras utils files ports)
(disable-interrupts)
(hide $quote-args-list $exec-setup $exec-teardown)
(not inline ##sys#interrupt-hook ##sys#user-interrupt-hook)
(foreign-declare #<<EOF
#ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#if (defined(HAVE_WINSOCK2_H) && defined(HAVE_WS2TCPIP_H))
# include <winsock2.h>
# include <ws2tcpip.h>
#else
# include <winsock.h>
#endif
#include <signal.h>
#include <errno.h>
#include <io.h>
#include <stdio.h>
#include <process.h>
#include <fcntl.h>
#include <direct.h>
#include <utime.h>
#include <time.h>
#define ARG_MAX 256
#define PIPE_BUF 512
#ifndef ENV_MAX
# define ENV_MAX 1024
#endif
static C_TLS char *C_exec_args[ ARG_MAX ];
static C_TLS char *C_exec_env[ ENV_MAX ];
static C_TLS struct group *C_group;
static C_TLS int C_pipefds[ 2 ];
static C_TLS time_t C_secs;
static C_TLS struct tm C_tm;
/* pipe handles */
static C_TLS HANDLE C_rd0, C_wr0, C_wr0_, C_rd1, C_wr1, C_rd1_;
static C_TLS HANDLE C_save0, C_save1; /* saved I/O handles */
static C_TLS char C_rdbuf; /* one-char buffer for read */
static C_TLS int C_exstatus;
/* platform information; initialized for cached testing */
static C_TLS char C_hostname[256] = "";
static C_TLS char C_osver[16] = "";
static C_TLS char C_osrel[16] = "";
static C_TLS char C_processor[16] = "";
static C_TLS char C_shlcmd[256] = "";
/* Windows NT or better */
static int C_isNT = 0;
/* Current user name */
static C_TLS TCHAR C_username[255 + 1] = "";
/* Directory Operations */
#define C_mkdir(str) C_fix(mkdir(C_c_string(str)))
#define C_chdir(str) C_fix(chdir(C_c_string(str)))
#define C_rmdir(str) C_fix(rmdir(C_c_string(str)))
#ifndef __WATCOMC__
/* DIRENT stuff */
struct dirent
{
char * d_name;
};
typedef struct
{
struct _finddata_t fdata;
int handle;
struct dirent current;
} DIR;
static DIR * C_fcall
opendir(const char *name)
{
int name_len = strlen(name);
DIR *dir = (DIR *)malloc(sizeof(DIR));
char *what;
if (!dir)
{
errno = ENOMEM;
return NULL;
}
what = (char *)malloc(name_len + 3);
if (!what)
{
free(dir);
errno = ENOMEM;
return NULL;
}
strcpy(what, name);
if (strchr("\\/", name[name_len - 1]))
strcat(what, "*");
else
strcat(what, "\\*");
dir->handle = _findfirst(what, &dir->fdata);
if (dir->handle == -1)
{
free(what);
free(dir);
return NULL;
}
dir->current.d_name = NULL; /* as the first-time indicator */
free(what);
return dir;
}
static int C_fcall
closedir(DIR * dir)
{
if (dir)
{
int res = _findclose(dir->handle);
free(dir);
return res;
}
return -1;
}
static struct dirent * C_fcall
readdir(DIR * dir)
{
if (dir)
{
if (!dir->current.d_name /* first time after opendir */
|| _findnext(dir->handle, &dir->fdata) != -1)
{
dir->current.d_name = dir->fdata.name;
return &dir->current;
}
}
return NULL;
}
#endif /* ifndef __WATCOMC__ */
#ifdef __WATCOMC__
# define mktemp _mktemp
/* there is no P_DETACH in Watcom CRTL */
# define P_DETACH P_NOWAIT
#endif
#define C_opendir(x,h) C_set_block_item(h, 0, (C_word) opendir(C_c_string(x)))
#define C_closedir(h) (closedir((DIR *)C_block_item(h, 0)), C_SCHEME_UNDEFINED)
#define C_readdir(h,e) C_set_block_item(e, 0, (C_word) readdir((DIR *)C_block_item(h, 0)))
#define C_foundfile(e,b) (strcpy(C_c_string(b), ((struct dirent *) C_block_item(e, 0))->d_name), C_fix(strlen(((struct dirent *) C_block_item(e, 0))->d_name)))
#define open_binary_input_pipe(a, n, name) C_mpointer(a, _popen(C_c_string(name), "r"))
#define open_text_input_pipe(a, n, name) open_binary_input_pipe(a, n, name)
#define open_binary_output_pipe(a, n, name) C_mpointer(a, _popen(C_c_string(name), "w"))
#define open_text_output_pipe(a, n, name) open_binary_output_pipe(a, n, name)
#define close_pipe(p) C_fix(_pclose(C_port_file(p)))
#define C_set_file_ptr(port, ptr) (C_set_block_item(port, 0, (C_block_item(ptr, 0))), C_SCHEME_UNDEFINED)
#define C_getpid getpid
#define C_chmod(fn, m) C_fix(chmod(C_data_pointer(fn), C_unfix(m)))
#define C_fdopen(a, n, fd, m) C_mpointer(a, fdopen(C_unfix(fd), C_c_string(m)))
#define C_C_fileno(p) C_fix(fileno(C_port_file(p)))
#define C_dup(x) C_fix(dup(C_unfix(x)))
#define C_dup2(x, y) C_fix(dup2(C_unfix(x), C_unfix(y)))
#define C_setvbuf(p, m, s) C_fix(setvbuf(C_port_file(p), NULL, C_unfix(m), C_unfix(s)))
#define C_test_access(fn, m) C_fix(access((char *)C_data_pointer(fn), C_unfix(m)))
#define C_pipe(d, m) C_fix(_pipe(C_pipefds, PIPE_BUF, C_unfix(m)))
#define C_close(fd) C_fix(close(C_unfix(fd)))
#define C_getenventry(i) environ[ i ]
#define C_putenv(s) C_fix(putenv((char *)C_data_pointer(s)))
#define C_lstat(fn) C_stat(fn)
static C_word C_fcall
C_setenv(C_word x, C_word y)
{
char *sx = C_data_pointer(x),
*sy = C_data_pointer(y);
int n1 = C_strlen(sx),
n2 = C_strlen(sy);
char *buf = (char *)C_malloc(n1 + n2 + 2);
if (buf == NULL)
return(C_fix(0));
else
{
C_strcpy(buf, sx);
buf[ n1 ] = '=';
C_strcpy(buf + n1 + 1, sy);
return(C_fix(putenv(buf)));
}
}
static void C_fcall
C_set_arg_string(char **where, int i, char *dat, int len)
{
char *ptr;
if (dat)
{
ptr = (char *)C_malloc(len + 1);
C_memcpy(ptr, dat, len);
ptr[ len ] = '\0';
}
else
ptr = NULL;
where[ i ] = ptr;
}
static void C_fcall
C_free_arg_string(char **where) {
while (*where) C_free(*(where++));
}
#define C_set_exec_arg(i, a, len) C_set_arg_string(C_exec_args, i, a, len)
#define C_set_exec_env(i, a, len) C_set_arg_string(C_exec_env, i, a, len)
#define C_free_exec_args() (C_free_arg_string(C_exec_args), C_SCHEME_TRUE)
#define C_free_exec_env() (C_free_arg_string(C_exec_env), C_SCHEME_TRUE)
#define C_execvp(f) C_fix(execvp(C_data_pointer(f), (const char *const *)C_exec_args))
#define C_execve(f) C_fix(execve(C_data_pointer(f), (const char *const *)C_exec_args, (const char *const *)C_exec_env))
/* MS replacement for the fork-exec pair */
#define C_spawnvp(m, f) C_fix(spawnvp(C_unfix(m), C_data_pointer(f), (const char *const *)C_exec_args))
#define C_spawnvpe(m, f) C_fix(spawnvpe(C_unfix(m), C_data_pointer(f), (const char *const *)C_exec_args, (const char *const *)C_exec_env))
#define C_open(fn, fl, m) C_fix(open(C_c_string(fn), C_unfix(fl), C_unfix(m)))
#define C_read(fd, b, n) C_fix(read(C_unfix(fd), C_data_pointer(b), C_unfix(n)))
#define C_write(fd, b, n) C_fix(write(C_unfix(fd), C_data_pointer(b), C_unfix(n)))
#define C_mkstemp(t) C_fix(mktemp(C_c_string(t)))
/* It is assumed that 'int' is-a 'long' */
#define C_ftell(p) C_fix(ftell(C_port_file(p)))
#define C_fseek(p, n, w) C_mk_nbool(fseek(C_port_file(p), C_num_to_int(n), C_unfix(w)))
#define C_lseek(fd, o, w) C_fix(lseek(C_unfix(fd), C_unfix(o), C_unfix(w)))
#define C_flushall() C_fix(_flushall())
#define C_umask(m) C_fix(_umask(C_unfix(m)))
#define C_ctime(n) (C_secs = (n), ctime(&C_secs))
#define C_tm_set_08(v) \
(memset(&C_tm, 0, sizeof(struct tm)), \
C_tm.tm_sec = C_unfix(C_block_item(v, 0)), \
C_tm.tm_min = C_unfix(C_block_item(v, 1)), \
C_tm.tm_hour = C_unfix(C_block_item(v, 2)), \
C_tm.tm_mday = C_unfix(C_block_item(v, 3)), \
C_tm.tm_mon = C_unfix(C_block_item(v, 4)), \
C_tm.tm_year = C_unfix(C_block_item(v, 5)), \
C_tm.tm_wday = C_unfix(C_block_item(v, 6)), \
C_tm.tm_yday = C_unfix(C_block_item(v, 7)), \
C_tm.tm_isdst = (C_block_item(v, 8) != C_SCHEME_FALSE))
#define C_tm_set(v) (C_tm_set_08(v), &C_tm)
#define C_asctime(v) (asctime(C_tm_set(v)))
#define C_a_mktime(ptr, c, v) C_flonum(ptr, mktime(C_tm_set(v)))
#define TIME_STRING_MAXLENGTH 255
static char C_time_string [TIME_STRING_MAXLENGTH + 1];
#undef TIME_STRING_MAXLENGTH
/*
mapping from Win32 error codes to errno
*/
typedef struct
{
DWORD win32;
int libc;
} errmap_t;
static errmap_t errmap[] =
{
{ERROR_INVALID_FUNCTION, EINVAL},
{ERROR_FILE_NOT_FOUND, ENOENT},
{ERROR_PATH_NOT_FOUND, ENOENT},
{ERROR_TOO_MANY_OPEN_FILES, EMFILE},
{ERROR_ACCESS_DENIED, EACCES},
{ERROR_INVALID_HANDLE, EBADF},
{ERROR_ARENA_TRASHED, ENOMEM},
{ERROR_NOT_ENOUGH_MEMORY, ENOMEM},
{ERROR_INVALID_BLOCK, ENOMEM},
{ERROR_BAD_ENVIRONMENT, E2BIG},
{ERROR_BAD_FORMAT, ENOEXEC},
{ERROR_INVALID_ACCESS, EINVAL},
{ERROR_INVALID_DATA, EINVAL},
{ERROR_INVALID_DRIVE, ENOENT},
{ERROR_CURRENT_DIRECTORY, EACCES},
{ERROR_NOT_SAME_DEVICE, EXDEV},
{ERROR_NO_MORE_FILES, ENOENT},
{ERROR_LOCK_VIOLATION, EACCES},
{ERROR_BAD_NETPATH, ENOENT},
{ERROR_NETWORK_ACCESS_DENIED, EACCES},
{ERROR_BAD_NET_NAME, ENOENT},
{ERROR_FILE_EXISTS, EEXIST},
{ERROR_CANNOT_MAKE, EACCES},
{ERROR_FAIL_I24, EACCES},
{ERROR_INVALID_PARAMETER, EINVAL},
{ERROR_NO_PROC_SLOTS, EAGAIN},
{ERROR_DRIVE_LOCKED, EACCES},
{ERROR_BROKEN_PIPE, EPIPE},
{ERROR_DISK_FULL, ENOSPC},
{ERROR_INVALID_TARGET_HANDLE, EBADF},
{ERROR_INVALID_HANDLE, EINVAL},
{ERROR_WAIT_NO_CHILDREN, ECHILD},
{ERROR_CHILD_NOT_COMPLETE, ECHILD},
{ERROR_DIRECT_ACCESS_HANDLE, EBADF},
{ERROR_NEGATIVE_SEEK, EINVAL},
{ERROR_SEEK_ON_DEVICE, EACCES},
{ERROR_DIR_NOT_EMPTY, ENOTEMPTY},
{ERROR_NOT_LOCKED, EACCES},
{ERROR_BAD_PATHNAME, ENOENT},
{ERROR_MAX_THRDS_REACHED, EAGAIN},
{ERROR_LOCK_FAILED, EACCES},
{ERROR_ALREADY_EXISTS, EEXIST},
{ERROR_FILENAME_EXCED_RANGE, ENOENT},
{ERROR_NESTING_NOT_ALLOWED, EAGAIN},
{ERROR_NOT_ENOUGH_QUOTA, ENOMEM},
{0, 0}
};
static void C_fcall
set_errno(DWORD w32err)
{
errmap_t *map = errmap;
for (; errmap->win32; ++map)
{
if (errmap->win32 == w32err)
{
errno = errmap->libc;
return;
}
}
}
static int C_fcall
set_last_errno()
{
set_errno(GetLastError());
return 0;
}
/* Functions for creating process with redirected I/O */
static int C_fcall
zero_handles()
{
C_rd0 = C_wr0 = C_wr0_ = INVALID_HANDLE_VALUE;
C_rd1 = C_wr1 = C_rd1_ = INVALID_HANDLE_VALUE;
C_save0 = C_save1 = INVALID_HANDLE_VALUE;
return 1;
}
static int C_fcall
close_handles()
{
if (C_rd0 != INVALID_HANDLE_VALUE)
CloseHandle(C_rd0);
if (C_rd1 != INVALID_HANDLE_VALUE)
CloseHandle(C_rd1);
if (C_wr0 != INVALID_HANDLE_VALUE)
CloseHandle(C_wr0);
if (C_wr1 != INVALID_HANDLE_VALUE)
CloseHandle(C_wr1);
if (C_rd1_ != INVALID_HANDLE_VALUE)
CloseHandle(C_rd1_);
if (C_wr0_ != INVALID_HANDLE_VALUE)
CloseHandle(C_wr0_);
if (C_save0 != INVALID_HANDLE_VALUE)
{
SetStdHandle(STD_INPUT_HANDLE, C_save0);
CloseHandle(C_save0);
}
if (C_save1 != INVALID_HANDLE_VALUE)
{
SetStdHandle(STD_OUTPUT_HANDLE, C_save1);
CloseHandle(C_save1);
}
return zero_handles();
}
static int C_fcall
redir_io()
{
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
zero_handles();
C_save0 = GetStdHandle(STD_INPUT_HANDLE);
C_save1 = GetStdHandle(STD_OUTPUT_HANDLE);
if (!CreatePipe(&C_rd0, &C_wr0, &sa, 0)
|| !SetStdHandle(STD_INPUT_HANDLE, C_rd0)
|| !DuplicateHandle(GetCurrentProcess(), C_wr0, GetCurrentProcess(),
&C_wr0_, 0, FALSE, DUPLICATE_SAME_ACCESS)
|| !CreatePipe(&C_rd1, &C_wr1, &sa, 0)
|| !SetStdHandle(STD_OUTPUT_HANDLE, C_wr1)
|| !DuplicateHandle(GetCurrentProcess(), C_rd1, GetCurrentProcess(),
&C_rd1_, 0, FALSE, DUPLICATE_SAME_ACCESS))
{
set_last_errno();
close_handles();
return 0;
}
CloseHandle(C_wr0);
C_wr0 = INVALID_HANDLE_VALUE;
CloseHandle(C_rd1);
C_rd1 = INVALID_HANDLE_VALUE;
return 1;
}
static int C_fcall
run_process(char *cmdline)
{
PROCESS_INFORMATION pi;
STARTUPINFO si;
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
C_wr0_ = C_rd1_ = INVALID_HANDLE_VALUE; /* these handles are saved */
if (CreateProcess(NULL, cmdline, NULL, NULL, TRUE, 0, NULL,
NULL, &si, &pi))
{
CloseHandle(pi.hThread);
SetStdHandle(STD_INPUT_HANDLE, C_save0);
SetStdHandle(STD_OUTPUT_HANDLE, C_save1);
C_save0 = C_save1 = INVALID_HANDLE_VALUE;
CloseHandle(C_rd0);
CloseHandle(C_wr1);
C_rd0 = C_wr1 = INVALID_HANDLE_VALUE;
return (int)pi.hProcess;
}
else
return set_last_errno();
}
static int C_fcall
pipe_write(int hpipe, void* buf, int count)
{
DWORD done = 0;
if (WriteFile((HANDLE)hpipe, buf, count, &done, NULL))
return 1;
else
return set_last_errno();
}
static int C_fcall
pipe_read(int hpipe)
{
DWORD done = 0;
/* TODO:
if (!pipe_ready(hpipe))
go_to_sleep;
*/
if (ReadFile((HANDLE)hpipe, &C_rdbuf, 1, &done, NULL))
{
if (done > 0) /* not EOF yet */
return 1;
else
return -1;
}
return set_last_errno();
}
static int C_fcall
pipe_ready(int hpipe)
{
DWORD avail = 0;
if (PeekNamedPipe((HANDLE)hpipe, NULL, 0, NULL, &avail, NULL) && avail)
return 1;
else
{
Sleep(0); /* give pipe a chance */
if (PeekNamedPipe((HANDLE)hpipe, NULL, 0, NULL, &avail, NULL))
return (avail > 0);
else
return 0;
}
}
#define C_zero_handles() C_fix(zero_handles())
#define C_close_handles() C_fix(close_handles())
#define C_redir_io() (redir_io() ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define C_run_process(cmdline) C_fix(run_process(C_c_string(cmdline)))
#define C_pipe_write(h, b, n) (pipe_write(C_unfix(h), C_c_string(b), C_unfix(n)) ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define C_pipe_read(h) C_fix(pipe_read(C_unfix(h)))
#define C_pipe_ready(h) (pipe_ready(C_unfix(h)) ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define close_handle(h) CloseHandle((HANDLE)h)
static int C_fcall
process_wait(int h, int t)
{
if (WaitForSingleObject((HANDLE)h, (t ? 0 : INFINITE)) == WAIT_OBJECT_0)
{
DWORD ret;
if (GetExitCodeProcess((HANDLE)h, &ret))
{
CloseHandle((HANDLE)h);
C_exstatus = ret;
return 1;
}
}
return set_last_errno();
}
#define C_process_wait(p, t) (process_wait(C_unfix(p), C_truep(t)) ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define C_sleep(t) (Sleep(C_unfix(t) * 1000), C_SCHEME_UNDEFINED)
static int C_fcall
get_hostname()
{
/* Do we already have hostname? */
if (strlen(C_hostname))
{
return 1;
}
else
{
WSADATA wsa;
if (WSAStartup(MAKEWORD(1, 1), &wsa) == 0)
{
int nok = gethostname(C_hostname, sizeof(C_hostname));
WSACleanup();
return !nok;
}
return 0;
}
}
static int C_fcall
sysinfo()
{
/* Do we need to build the sysinfo? */
if (!strlen(C_osrel))
{
OSVERSIONINFO ovf;
ZeroMemory(&ovf, sizeof(ovf));
ovf.dwOSVersionInfoSize = sizeof(ovf);
if (get_hostname() && GetVersionEx(&ovf))
{
SYSTEM_INFO si;
_snprintf(C_osver, sizeof(C_osver) - 1, "%d.%d.%d",
ovf.dwMajorVersion, ovf.dwMinorVersion, ovf.dwBuildNumber);
strncpy(C_osrel, "Win", sizeof(C_osrel) - 1);
switch (ovf.dwPlatformId)
{
case VER_PLATFORM_WIN32s:
strncpy(C_osrel, "Win32s", sizeof(C_osrel) - 1);
break;
case VER_PLATFORM_WIN32_WINDOWS:
if (ovf.dwMajorVersion == 4)
{
if (ovf.dwMinorVersion == 0)
strncpy(C_osrel, "Win95", sizeof(C_osrel) - 1);
else if (ovf.dwMinorVersion == 10)
strncpy(C_osrel, "Win98", sizeof(C_osrel) - 1);
else if (ovf.dwMinorVersion == 90)
strncpy(C_osrel, "WinMe", sizeof(C_osrel) - 1);
}
break;
case VER_PLATFORM_WIN32_NT:
C_isNT = 1;
if (ovf.dwMajorVersion == 6)
strncpy(C_osrel, "WinVista", sizeof(C_osrel) - 1);
else if (ovf.dwMajorVersion == 5)
{
if (ovf.dwMinorVersion == 2)
strncpy(C_osrel, "WinServer2003", sizeof(C_osrel) - 1);
else if (ovf.dwMinorVersion == 1)
strncpy(C_osrel, "WinXP", sizeof(C_osrel) - 1);
else if ( ovf.dwMinorVersion == 0)
strncpy(C_osrel, "Win2000", sizeof(C_osrel) - 1);
}
else if (ovf.dwMajorVersion <= 4)
strncpy(C_osrel, "WinNT", sizeof(C_osrel) - 1);
break;
}
GetSystemInfo(&si);
strncpy(C_processor, "Unknown", sizeof(C_processor) - 1);
switch (si.wProcessorArchitecture)
{
case PROCESSOR_ARCHITECTURE_INTEL:
strncpy(C_processor, "x86", sizeof(C_processor) - 1);
break;
# ifdef PROCESSOR_ARCHITECTURE_IA64
case PROCESSOR_ARCHITECTURE_IA64:
strncpy(C_processor, "IA64", sizeof(C_processor) - 1);
break;
# endif
# ifdef PROCESSOR_ARCHITECTURE_AMD64
case PROCESSOR_ARCHITECTURE_AMD64:
strncpy(C_processor, "x64", sizeof(C_processor) - 1);
break;
# endif
# ifdef PROCESSOR_ARCHITECTURE_IA32_ON_WIN64
case PROCESSOR_ARCHITECTURE_IA32_ON_WIN64:
strncpy(C_processor, "WOW64", sizeof(C_processor) - 1);
break;
# endif
}
}
else
return set_last_errno();
}
return 1;
}
static int C_fcall
get_shlcmd()
{
/* Do we need to build the shell command pathname? */
if (!strlen(C_shlcmd))
{
if (sysinfo())
{
char *cmdnam = C_isNT ? "\\cmd.exe" : "\\command.com";
UINT len = GetSystemDirectory(C_shlcmd, sizeof(C_shlcmd) - strlen(cmdnam));
if (len)
strcpy(C_shlcmd + len, cmdnam);
else
return set_last_errno();
}
else
return 0;
}
return 1;
}
#define C_get_hostname() (get_hostname() ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define C_sysinfo() (sysinfo() ? C_SCHEME_TRUE : C_SCHEME_FALSE)
#define C_get_shlcmd() (get_shlcmd() ? C_SCHEME_TRUE : C_SCHEME_FALSE)
/* GetUserName */
static int C_fcall
get_user_name()
{
if (!strlen(C_username))
{
DWORD bufCharCount = sizeof(C_username) / sizeof(C_username[0]);
if (!GetUserName(C_username, &bufCharCount))
return set_last_errno();
}
return 1;
}
#define C_get_user_name() (get_user_name() ? C_SCHEME_TRUE : C_SCHEME_FALSE)
/* User Information */
#if 0
static int C_fcall
get_netinfo()
{
HINSTANCE hNet = 0,
hLoc = 0;
if (isNT)
hNet = LoadLibrary("netapi32.dll");
else
{
hLoc = LoadLibrary("rlocal32.dll");
hNet = LoadLibrary("radmin32.dll");
//hNet = LoadLibrary("netapi.dll");
}
if (!hNet)
return 0;
}
#endif
/*
Spawn a process directly.
Params:
app Command to execute.
cmdlin Command line (arguments).
env Environment for the new process (may be NULL).
handle, stdin, stdout, stderr
Spawned process info are returned in integers.
When spawned process shares standard io stream with the parent
process the respective value in handle, stdin, stdout, stderr
is -1.
params A bitmask controling operation.
Bit 1: Child & parent share standard input if this bit is set.
Bit 2: Share standard output if bit is set.
Bit 3: Share standard error if bit is set.
Returns: zero return value indicates failure.
*/
static int C_fcall
C_process(const char * app, const char * cmdlin, const char ** env,
int * phandle,
int * pstdin_fd, int * pstdout_fd, int * pstderr_fd,
int params)
{
int i;
int success = TRUE;
const int f_share_io[3] = { params & 1, params & 2, params & 4};
int io_fds[3] = { -1, -1, -1 };
HANDLE
child_io_handles[3] = { NULL, NULL, NULL },
standard_io_handles[3] = {
GetStdHandle(STD_INPUT_HANDLE),
GetStdHandle(STD_OUTPUT_HANDLE),
GetStdHandle(STD_ERROR_HANDLE)};
const char modes[3] = "rww";
HANDLE cur_process = GetCurrentProcess(), child_process = NULL;
void* envblk = NULL;
/****** create io handles & fds ***/
for (i=0; i<3 && success; ++i)
{
if (f_share_io[i])
{
success = DuplicateHandle(
cur_process, standard_io_handles[i],
cur_process, &child_io_handles[i],
0, FALSE, DUPLICATE_SAME_ACCESS);
}
else
{
HANDLE a, b;
success = CreatePipe(&a,&b,NULL,0);
if(success)
{
HANDLE parent_end;
if (modes[i]=='r') { child_io_handles[i]=a; parent_end=b; }
else { parent_end=a; child_io_handles[i]=b; }
success = (io_fds[i] = _open_osfhandle((long)parent_end,0)) >= 0;
}
}
}
/****** make handles inheritable */
for (i=0; i<3 && success; ++i)
success = SetHandleInformation(child_io_handles[i], HANDLE_FLAG_INHERIT, -1);
#if 0 /* Requires a sorted list by key! */
/****** create environment block if necessary ****/
if (env && success)
{
char** p;
int len = 0;
for (p = env; *p; ++p) len += strlen(*p) + 1;
if (envblk = C_malloc(len + 1))
{
char* pb = (char*)envblk;
for (p = env; *p; ++p)
{
strcpy(pb, *p);
pb += strlen(*p) + 1;
}
*pb = '\0';
}
else
success = FALSE;
}
#endif
/****** finally spawn process ****/
if (success)
{
PROCESS_INFORMATION pi;
STARTUPINFO si;
ZeroMemory(&pi,sizeof pi);
ZeroMemory(&si,sizeof si);
si.cb = sizeof si;
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = child_io_handles[0];
si.hStdOutput = child_io_handles[1];
si.hStdError = child_io_handles[2];
/* FIXME passing 'app' param causes failure & possible stack corruption */
success = CreateProcess(
NULL, (char*)cmdlin, NULL, NULL, TRUE, 0, envblk, NULL, &si, &pi);
if (success)
{
child_process=pi.hProcess;
CloseHandle(pi.hThread);
}
else
set_last_errno();
}
else
set_last_errno();
/****** cleanup & return *********/
/* parent must close child end */
for (i=0; i<3; ++i) CloseHandle(child_io_handles[i]);
if (success)
{
*phandle = (int)child_process;
*pstdin_fd = io_fds[0];
*pstdout_fd = io_fds[1];
*pstderr_fd = io_fds[2];
}
else
{
for (i=0; i<3; ++i) _close(io_fds[i]);
}
return success;
}
static int set_file_mtime(char *filename, C_word tm)
{
struct _utimbuf tb;
tb.actime = tb.modtime = C_num_to_int(tm);
return _utime(filename, &tb);
}
EOF
) )
;;; common code
(include "posix-common.scm")
;;; Lo-level I/O:
(define-foreign-variable _pipe_buf int "PIPE_BUF")
(define pipe/buf _pipe_buf)
(define-foreign-variable _o_rdonly int "O_RDONLY")
(define-foreign-variable _o_wronly int "O_WRONLY")
(define-foreign-variable _o_rdwr int "O_RDWR")
(define-foreign-variable _o_creat int "O_CREAT")
(define-foreign-variable _o_append int "O_APPEND")
(define-foreign-variable _o_excl int "O_EXCL")
(define-foreign-variable _o_trunc int "O_TRUNC")
(define-foreign-variable _o_binary int "O_BINARY")
(define-foreign-variable _o_text int "O_TEXT")
(define-foreign-variable _o_noinherit int "O_NOINHERIT")
(define open/rdonly _o_rdonly)
(define open/wronly _o_wronly)
(define open/rdwr _o_rdwr)
(define open/read _o_rdwr)
(define open/write _o_wronly)
(define open/creat _o_creat)
(define open/append _o_append)
(define open/excl _o_excl)
(define open/trunc _o_trunc)
(define open/binary _o_binary)
(define open/text _o_text)
(define open/noinherit _o_noinherit)
(define-foreign-variable _s_irusr int "S_IREAD")
(define-foreign-variable _s_iwusr int "S_IWRITE")
(define-foreign-variable _s_ixusr int "S_IEXEC")
(define-foreign-variable _s_irgrp int "S_IREAD")
(define-foreign-variable _s_iwgrp int "S_IWRITE")
(define-foreign-variable _s_ixgrp int "S_IEXEC")
(define-foreign-variable _s_iroth int "S_IREAD")
(define-foreign-variable _s_iwoth int "S_IWRITE")
(define-foreign-variable _s_ixoth int "S_IEXEC")
(define-foreign-variable _s_irwxu int "S_IREAD | S_IWRITE | S_IEXEC")
(define-foreign-variable _s_irwxg int "S_IREAD | S_IWRITE | S_IEXEC")
(define-foreign-variable _s_irwxo int "S_IREAD | S_IWRITE | S_IEXEC")
(define perm/irusr _s_irusr)
(define perm/iwusr _s_iwusr)
(define perm/ixusr _s_ixusr)
(define perm/irgrp _s_irgrp)
(define perm/iwgrp _s_iwgrp)
(define perm/ixgrp _s_ixgrp)
(define perm/iroth _s_iroth)
(define perm/iwoth _s_iwoth)
(define perm/ixoth _s_ixoth)
(define perm/irwxu _s_irwxu)
(define perm/irwxg _s_irwxg)
(define perm/irwxo _s_irwxo)
(define file-open
(let ([defmode (bitwise-ior _s_irwxu (fxior _s_irgrp _s_iroth))] )
(lambda (filename flags . mode)
(let ([mode (if (pair? mode) (car mode) defmode)])
(##sys#check-string filename 'file-open)
(##sys#check-exact flags 'file-open)
(##sys#check-exact mode 'file-open)
(let ([fd (##core#inline "C_open" (##sys#make-c-string (##sys#expand-home-path filename) 'file-open) flags mode)])
(when (eq? -1 fd)
(##sys#update-errno)
(##sys#signal-hook #:file-error 'file-open "cannot open file" filename flags mode) )
fd) ) ) ) )
(define file-close
(lambda (fd)
(##sys#check-exact fd 'file-close)
(when (fx< (##core#inline "C_close" fd) 0)
(##sys#update-errno)
(##sys#signal-hook #:file-error 'file-close "cannot close file" fd) ) ) )
(define file-read
(lambda (fd size . buffer)
(##sys#check-exact fd 'file-read)
(##sys#check-exact size 'file-read)
(let ([buf (if (pair? buffer) (car buffer) (make-string size))])
(unless (and (##core#inline "C_blockp" buf) (##core#inline "C_byteblockp" buf))
(##sys#signal-hook #:type-error 'file-read "bad argument type - not a string or blob" buf) )
(let ([n (##core#inline "C_read" fd buf size)])
(when (eq? -1 n)
(##sys#update-errno)
(##sys#signal-hook #:file-error 'file-read "cannot read from file" fd size) )
(list buf n) ) ) ) )
(define file-write