head 1.1; branch 1.1.1; access; symbols perseant-exfatfs-base-20250801:1.1.1.2 perseant-exfatfs-base-20240630:1.1.1.2 perseant-exfatfs:1.1.1.2.0.46 perseant-exfatfs-base:1.1.1.2 cjep_sun2x:1.1.1.2.0.44 cjep_sun2x-base:1.1.1.2 cjep_staticlib_x-base1:1.1.1.2 cjep_staticlib_x:1.1.1.2.0.42 cjep_staticlib_x-base:1.1.1.2 phil-wifi-20200421:1.1.1.2 phil-wifi-20200411:1.1.1.2 phil-wifi-20200406:1.1.1.2 pgoyette-compat-merge-20190127:1.1.1.2 pgoyette-compat-20190127:1.1.1.2 pgoyette-compat-20190118:1.1.1.2 pgoyette-compat-1226:1.1.1.2 pgoyette-compat-1126:1.1.1.2 pgoyette-compat-1020:1.1.1.2 pgoyette-compat-0930:1.1.1.2 pgoyette-compat-0906:1.1.1.2 pgoyette-compat-0728:1.1.1.2 pgoyette-compat-0625:1.1.1.2 pgoyette-compat-0521:1.1.1.2 pgoyette-compat-0502:1.1.1.2 pgoyette-compat-0422:1.1.1.2 pgoyette-compat-0415:1.1.1.2 pgoyette-compat-0407:1.1.1.2 pgoyette-compat-0330:1.1.1.2 pgoyette-compat-0322:1.1.1.2 pgoyette-compat-0315:1.1.1.2 pgoyette-compat:1.1.1.2.0.40 pgoyette-compat-base:1.1.1.2 perseant-stdc-iso10646:1.1.1.2.0.38 perseant-stdc-iso10646-base:1.1.1.2 prg-localcount2-base3:1.1.1.2 prg-localcount2-base2:1.1.1.2 prg-localcount2-base1:1.1.1.2 prg-localcount2:1.1.1.2.0.36 prg-localcount2-base:1.1.1.2 pgoyette-localcount-20170426:1.1.1.2 bouyer-socketcan-base1:1.1.1.2 pgoyette-localcount-20170320:1.1.1.2 bouyer-socketcan:1.1.1.2.0.34 bouyer-socketcan-base:1.1.1.2 pgoyette-localcount-20170107:1.1.1.2 pgoyette-localcount-20161104:1.1.1.2 localcount-20160914:1.1.1.2 pgoyette-localcount-20160806:1.1.1.2 pgoyette-localcount-20160726:1.1.1.2 pgoyette-localcount:1.1.1.2.0.32 pgoyette-localcount-base:1.1.1.2 netbsd-5-2-3-RELEASE:1.1.1.2 netbsd-5-1-5-RELEASE:1.1.1.2 yamt-pagecache-base9:1.1.1.2 yamt-pagecache-tag8:1.1.1.2 tls-earlyentropy:1.1.1.2.0.28 tls-earlyentropy-base:1.1.1.2 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.2 riastradh-drm2-base3:1.1.1.2 netbsd-5-2-2-RELEASE:1.1.1.2 netbsd-5-1-4-RELEASE:1.1.1.2 netbsd-5-2-1-RELEASE:1.1.1.2 netbsd-5-1-3-RELEASE:1.1.1.2 agc-symver:1.1.1.2.0.30 agc-symver-base:1.1.1.2 tls-maxphys-base:1.1.1.2 yamt-pagecache-base8:1.1.1.2 netbsd-5-2:1.1.1.2.0.26 yamt-pagecache-base7:1.1.1.2 netbsd-5-2-RELEASE:1.1.1.2 netbsd-5-2-RC1:1.1.1.2 yamt-pagecache-base6:1.1.1.2 yamt-pagecache-base5:1.1.1.2 yamt-pagecache-base4:1.1.1.2 netbsd-5-1-2-RELEASE:1.1.1.2 netbsd-5-1-1-RELEASE:1.1.1.2 yamt-pagecache-base3:1.1.1.2 yamt-pagecache-base2:1.1.1.2 yamt-pagecache:1.1.1.2.0.24 yamt-pagecache-base:1.1.1.2 bouyer-quota2-nbase:1.1.1.2 bouyer-quota2:1.1.1.2.0.22 bouyer-quota2-base:1.1.1.2 matt-nb5-pq3:1.1.1.2.0.20 matt-nb5-pq3-base:1.1.1.2 netbsd-5-1:1.1.1.2.0.18 netbsd-5-1-RELEASE:1.1.1.2 netbsd-5-1-RC4:1.1.1.2 netbsd-5-1-RC3:1.1.1.2 netbsd-5-1-RC2:1.1.1.2 netbsd-5-1-RC1:1.1.1.2 netbsd-5-0-2-RELEASE:1.1.1.2 netbsd-5-0-1-RELEASE:1.1.1.2 jym-xensuspend-nbase:1.1.1.2 netbsd-5-0:1.1.1.2.0.16 netbsd-5-0-RELEASE:1.1.1.2 netbsd-5-0-RC4:1.1.1.2 netbsd-5-0-RC3:1.1.1.2 netbsd-5-0-RC2:1.1.1.2 jym-xensuspend:1.1.1.2.0.14 jym-xensuspend-base:1.1.1.2 netbsd-5-0-RC1:1.1.1.2 netbsd-5:1.1.1.2.0.12 netbsd-5-base:1.1.1.2 mjf-devfs2:1.1.1.2.0.10 mjf-devfs2-base:1.1.1.2 yamt-pf42-base4:1.1.1.2 yamt-pf42-base3:1.1.1.2 hpcarm-cleanup-nbase:1.1.1.2 yamt-pf42-base2:1.1.1.2 yamt-pf42:1.1.1.2.0.8 yamt-pf42-base:1.1.1.2 keiichi-mipv6-nbase:1.1.1.2 keiichi-mipv6:1.1.1.2.0.6 keiichi-mipv6-base:1.1.1.2 cube-autoconf:1.1.1.2.0.4 cube-autoconf-base:1.1.1.2 hpcarm-cleanup:1.1.1.2.0.2 hpcarm-cleanup-base:1.1.1.2 netbsd-1-0-base:1.1.1.1 nvi-1-11b:1.1.1.1 bostic-nvi:1.1.1; locks; strict; comment @ * @; 1.1 date 94.03.28.02.52.35; author cgd; state Exp; branches 1.1.1.1; next ; 1.1.1.1 date 94.03.28.02.52.36; author cgd; state Exp; branches; next 1.1.1.2; 1.1.1.2 date 94.08.17.16.35.24; author mycroft; state dead; branches; next ; desc @@ 1.1 log @Initial revision @ text @/*- * Copyright (c) 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. */ #ifndef lint static char sccsid[] = "@@(#)intr.c 8.1 (Berkeley) 3/23/94"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include "compat.h" #include #include #include "vi.h" /* * There's a count of how deep the interrupt level in the SCR structure * has gone. Each routine that wants to be interrupted increments this * level, and decrements it when it tears the interrupts down. There are * two simplifying assumptions: * * 1: All interruptible areas want the same handler (we don't have * to save/restore the old handler). * 2: This is the only way to turn on interrupts (we don't have to * worry about them already being turned on if the interrupt * level is 0). * * We do it this way because interrupts have to be very fast -- if the * O_REMAPMAX option is turned off, we are setting interrupts per key * stroke. * * If an interrupt arrives, the S_INTERRUPTED bit is set in any SCR that * has the S_INTERRUPTIBLE bit set. In the future this may be a problem. * The user should be able to move to another screen and keep typing while * another screen runs. Currently, if the user does this and the user has * more than one interruptible thing running, there will be no way to know * which one to stop. */ static void intr_def __P((int)); /* * intr_init -- * Set up a interrupts. */ int intr_init(sp) SCR *sp; { struct sigaction act; struct termios nterm; /* You can never interrupt sessions not using tty's. */ if (!F_ISSET(sp->gp, G_STDIN_TTY)) return (1); /* If interrupts already set up, just increase the level. */ if (sp->intr_level++) return (0); /* Turn interrupts on in this screen. */ F_SET(sp, S_INTERRUPTIBLE); /* Install a handler. */ act.sa_handler = intr_def; sigemptyset(&act.sa_mask); act.sa_flags = 0; if (sigaction(SIGINT, &act, &sp->intr_act)) { msgq(sp, M_SYSERR, "sigaction"); goto err1; } /* * Turn on interrupts. ISIG turns on VINTR, VQUIT and VSUSP. We * want VINTR to interrupt, so we install a handler. VQUIT is * ignored by main() because nvi never wants to catch it. A handler * for VSUSP should have been installed by the screen code. */ if (tcgetattr(STDIN_FILENO, &sp->intr_term)) { msgq(sp, M_SYSERR, "tcgetattr"); goto err2; } nterm = sp->intr_term; nterm.c_lflag |= ISIG; if (tcsetattr(STDIN_FILENO, TCSANOW | TCSASOFT, &nterm)) { msgq(sp, M_SYSERR, "tcsetattr"); /* * If an error occurs, back out the changes and run * without interrupts. */ err2: (void)sigaction(SIGINT, &sp->intr_act, NULL); err1: sp->intr_level = 0; F_CLR(sp, S_INTERRUPTIBLE); return (1); } return (0); } /* * intr_end -- * Tear down interrupts. */ void intr_end(sp) SCR *sp; { /* If not the bottom level of interrupts, just return. */ if (--sp->intr_level) return; /* Turn off interrupts. */ if (tcsetattr(STDIN_FILENO, TCSANOW | TCSASOFT, &sp->intr_term)) msgq(sp, M_SYSERR, "tcsetattr"); /* Reset the signal state. */ if (sigaction(SIGINT, &sp->intr_act, NULL)) msgq(sp, M_SYSERR, "sigaction"); /* Clear interrupt bits in this screen. */ F_CLR(sp, S_INTERRUPTED | S_INTERRUPTIBLE); } /* * intr_def -- * Default interrupt handler. */ static void intr_def(signo) int signo; { SCR *sp; for (sp = __global_list->dq.cqh_first; sp != (void *)&__global_list->dq; sp = sp->q.cqe_next) if (F_ISSET(sp, S_INTERRUPTIBLE)) F_SET(sp, S_INTERRUPTED); } @ 1.1.1.1 log @nvi/nex 1.11beta from bostic. @ text @@ 1.1.1.2 log @Clean up deleted files. @ text @@