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-rw-r--r--mdk-stage1/slang/slsignal.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/mdk-stage1/slang/slsignal.c b/mdk-stage1/slang/slsignal.c
deleted file mode 100644
index 30707dea5..000000000
--- a/mdk-stage1/slang/slsignal.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/* Copyright (c) 1998, 1999, 2001 John E. Davis
- * This file is part of the S-Lang library.
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Perl Artistic License.
- */
-#include "slinclud.h"
-
-#include <signal.h>
-
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
-#include <errno.h>
-
-#include "slang.h"
-#include "_slang.h"
-
-/* Do not trust these environments */
-#if defined(__CYGWIN32__) || defined(__MINGW32__) || defined(AMIGA)
-# ifdef SLANG_POSIX_SIGNALS
-# undef SLANG_POSIX_SIGNALS
-# endif
-#endif
-
-/* This function will cause system calls to be restarted after signal if possible */
-SLSig_Fun_Type *SLsignal (int sig, SLSig_Fun_Type *f)
-{
-#if defined(SLANG_POSIX_SIGNALS)
- struct sigaction old_sa, new_sa;
-
-# ifdef SIGALRM
- /* We want system calls to be interrupted by SIGALRM. */
- if (sig == SIGALRM) return SLsignal_intr (sig, f);
-# endif
-
- sigemptyset (&new_sa.sa_mask);
- new_sa.sa_handler = f;
-
- new_sa.sa_flags = 0;
-# ifdef SA_RESTART
- new_sa.sa_flags |= SA_RESTART;
-# endif
-
- if (-1 == sigaction (sig, &new_sa, &old_sa))
- return (SLSig_Fun_Type *) SIG_ERR;
-
- return old_sa.sa_handler;
-#else
- /* Not POSIX. */
- return signal (sig, f);
-#endif
-}
-
-/* This function will NOT cause system calls to be restarted after
- * signal if possible
- */
-SLSig_Fun_Type *SLsignal_intr (int sig, SLSig_Fun_Type *f)
-{
-#ifdef SLANG_POSIX_SIGNALS
- struct sigaction old_sa, new_sa;
-
- sigemptyset (&new_sa.sa_mask);
- new_sa.sa_handler = f;
-
- new_sa.sa_flags = 0;
-# ifdef SA_INTERRUPT
- new_sa.sa_flags |= SA_INTERRUPT;
-# endif
-
- if (-1 == sigaction (sig, &new_sa, &old_sa))
- return (SLSig_Fun_Type *) SIG_ERR;
-
- return old_sa.sa_handler;
-#else
- /* Not POSIX. */
- return signal (sig, f);
-#endif
-}
-
-/* We are primarily interested in blocking signals that would cause the
- * application to reset the tty. These include suspend signals and
- * possibly interrupt signals.
- */
-#ifdef SLANG_POSIX_SIGNALS
-static sigset_t Old_Signal_Mask;
-#endif
-
-static volatile unsigned int Blocked_Depth;
-
-int SLsig_block_signals (void)
-{
-#ifdef SLANG_POSIX_SIGNALS
- sigset_t new_mask;
-#endif
-
- Blocked_Depth++;
- if (Blocked_Depth != 1)
- {
- return 0;
- }
-
-#ifdef SLANG_POSIX_SIGNALS
- sigemptyset (&new_mask);
-# ifdef SIGQUIT
- sigaddset (&new_mask, SIGQUIT);
-# endif
-# ifdef SIGTSTP
- sigaddset (&new_mask, SIGTSTP);
-# endif
-# ifdef SIGINT
- sigaddset (&new_mask, SIGINT);
-# endif
-# ifdef SIGTTIN
- sigaddset (&new_mask, SIGTTIN);
-# endif
-# ifdef SIGTTOU
- sigaddset (&new_mask, SIGTTOU);
-# endif
-# ifdef SIGWINCH
- sigaddset (&new_mask, SIGWINCH);
-# endif
-
- (void) sigprocmask (SIG_BLOCK, &new_mask, &Old_Signal_Mask);
- return 0;
-#else
- /* Not implemented. */
- return -1;
-#endif
-}
-
-int SLsig_unblock_signals (void)
-{
- if (Blocked_Depth == 0)
- return -1;
-
- Blocked_Depth--;
-
- if (Blocked_Depth != 0)
- return 0;
-
-#ifdef SLANG_POSIX_SIGNALS
- (void) sigprocmask (SIG_SETMASK, &Old_Signal_Mask, NULL);
- return 0;
-#else
- return -1;
-#endif
-}
-
-#ifdef MSWINDOWS
-int SLsystem (char *cmd)
-{
- SLang_verror (SL_NOT_IMPLEMENTED, "system not implemented");
- return -1;
-}
-
-#else
-int SLsystem (char *cmd)
-{
-#ifdef SLANG_POSIX_SIGNALS
- pid_t pid;
- int status;
- struct sigaction ignore;
-# ifdef SIGINT
- struct sigaction save_intr;
-# endif
-# ifdef SIGQUIT
- struct sigaction save_quit;
-# endif
-# ifdef SIGCHLD
- sigset_t child_mask, save_mask;
-# endif
-
- if (cmd == NULL) return 1;
-
- ignore.sa_handler = SIG_IGN;
- sigemptyset (&ignore.sa_mask);
- ignore.sa_flags = 0;
-
-# ifdef SIGINT
- if (-1 == sigaction (SIGINT, &ignore, &save_intr))
- return -1;
-# endif
-
-# ifdef SIGQUIT
- if (-1 == sigaction (SIGQUIT, &ignore, &save_quit))
- {
- (void) sigaction (SIGINT, &save_intr, NULL);
- return -1;
- }
-# endif
-
-# ifdef SIGCHLD
- sigemptyset (&child_mask);
- sigaddset (&child_mask, SIGCHLD);
- if (-1 == sigprocmask (SIG_BLOCK, &child_mask, &save_mask))
- {
-# ifdef SIGINT
- (void) sigaction (SIGINT, &save_intr, NULL);
-# endif
-# ifdef SIGQUIT
- (void) sigaction (SIGQUIT, &save_quit, NULL);
-# endif
- return -1;
- }
-# endif
-
- pid = fork();
-
- if (pid == -1)
- status = -1;
- else if (pid == 0)
- {
- /* Child */
-# ifdef SIGINT
- (void) sigaction (SIGINT, &save_intr, NULL);
-# endif
-# ifdef SIGQUIT
- (void) sigaction (SIGQUIT, &save_quit, NULL);
-# endif
-# ifdef SIGCHLD
- (void) sigprocmask (SIG_SETMASK, &save_mask, NULL);
-# endif
-
- execl ("/bin/sh", "sh", "-c", cmd, NULL);
- _exit (127);
- }
- else
- {
- /* parent */
- while (-1 == waitpid (pid, &status, 0))
- {
-# ifdef EINTR
- if (errno == EINTR)
- continue;
-# endif
-# ifdef ERESTARTSYS
- if (errno == ERESTARTSYS)
- continue;
-# endif
- status = -1;
- break;
- }
- }
-# ifdef SIGINT
- if (-1 == sigaction (SIGINT, &save_intr, NULL))
- status = -1;
-# endif
-# ifdef SIGQUIT
- if (-1 == sigaction (SIGQUIT, &save_quit, NULL))
- status = -1;
-# endif
-# ifdef SIGCHLD
- if (-1 == sigprocmask (SIG_SETMASK, &save_mask, NULL))
- status = -1;
-# endif
-
- return status;
-
-#else /* No POSIX Signals */
-# ifdef SIGINT
- void (*sint)(int);
-# endif
-# ifdef SIGQUIT
- void (*squit)(int);
-# endif
- int status;
-
-# ifdef SIGQUIT
- squit = SLsignal (SIGQUIT, SIG_IGN);
-# endif
-# ifdef SIGINT
- sint = SLsignal (SIGINT, SIG_IGN);
-# endif
- status = system (cmd);
-# ifdef SIGINT
- SLsignal (SIGINT, sint);
-# endif
-# ifdef SIGQUIT
- SLsignal (SIGQUIT, squit);
-# endif
- return status;
-#endif /* POSIX_SIGNALS */
-}
-#endif
-
-#if 0
-#include <windows.h>
-static int msw_system (char *cmd)
-{
- STARTUPINFO startup_info;
- PROCESS_INFORMATION process_info;
- int status;
-
- if (cmd == NULL) return -1;
-
- memset ((char *) &startup_info, 0, sizeof (STARTUPINFO));
- startup_info.cb = sizeof(STARTUPINFO);
- startup_info.dwFlags = STARTF_USESHOWWINDOW;
- startup_info.wShowWindow = SW_SHOWDEFAULT;
-
- if (FALSE == CreateProcess (NULL,
- cmd,
- NULL,
- NULL,
- FALSE,
- NORMAL_PRIORITY_CLASS|CREATE_NEW_CONSOLE,
- NULL,
- NULL,
- &startup_info,
- &process_info))
- {
- SLang_verror (0, "%s: CreateProcess failed.", cmd);
- return -1;
- }
-
- status = -1;
-
- if (0xFFFFFFFFUL != WaitForSingleObject (process_info.hProcess, INFINITE))
- {
- DWORD exit_code;
-
- if (TRUE == GetExitCodeProcess (process_info.hProcess, &exit_code))
- status = (int) exit_code;
- }
-
- CloseHandle (process_info.hThread);
- CloseHandle (process_info.hProcess);
-
- return status;
-}
-#endif
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