diff options
Diffstat (limited to 'usr.bin/vi/ex/ex_shell.c')
| -rw-r--r-- | usr.bin/vi/ex/ex_shell.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/usr.bin/vi/ex/ex_shell.c b/usr.bin/vi/ex/ex_shell.c deleted file mode 100644 index bcbb97d317fd..000000000000 --- a/usr.bin/vi/ex/ex_shell.c +++ /dev/null @@ -1,150 +0,0 @@ -/*- - * Copyright (c) 1992, 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[] = "@(#)ex_shell.c 8.24 (Berkeley) 8/5/94"; -#endif /* not lint */ - -#include <sys/param.h> -#include <sys/queue.h> -#include <sys/time.h> - -#include <bitstring.h> -#include <errno.h> -#include <limits.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <termios.h> -#include <unistd.h> - -#include "compat.h" -#include <db.h> -#include <regex.h> - -#include "vi.h" -#include "excmd.h" -#include "../svi/svi_screen.h" - -/* - * ex_shell -- :sh[ell] - * Invoke the program named in the SHELL environment variable - * with the argument -i. - */ -int -ex_shell(sp, ep, cmdp) - SCR *sp; - EXF *ep; - EXCMDARG *cmdp; -{ - char buf[MAXPATHLEN]; - - (void)snprintf(buf, sizeof(buf), "%s -i", O_STR(sp, O_SHELL)); - return (ex_exec_proc(sp, buf, "\n", NULL)); -} - -/* - * ex_exec_proc -- - * Run a separate process. - */ -int -ex_exec_proc(sp, cmd, p1, p2) - SCR *sp; - char *cmd, *p1, *p2; -{ - const char *name; - pid_t pid; - int rval, teardown; - - /* Clear the rest of the screen. */ - if (sp->s_clear(sp)) - return (1); - - /* Save ex/vi terminal settings, and restore the original ones. */ - teardown = !ex_sleave(sp); - - /* - * Flush waiting messages (autowrite, for example) so the output - * matches historic practice. - */ - (void)sex_refresh(sp, sp->ep); - - /* Put out various messages. */ - if (p1 != NULL) - (void)write(STDOUT_FILENO, p1, strlen(p1)); - if (p2 != NULL) - (void)write(STDOUT_FILENO, p2, strlen(p2)); - - SIGBLOCK(sp->gp); - switch (pid = vfork()) { - case -1: /* Error. */ - SIGUNBLOCK(sp->gp); - - msgq(sp, M_SYSERR, "vfork"); - rval = 1; - break; - case 0: /* Utility. */ - /* The utility has default signal behavior. */ - sig_end(); - - if ((name = strrchr(O_STR(sp, O_SHELL), '/')) == NULL) - name = O_STR(sp, O_SHELL); - else - ++name; - execl(O_STR(sp, O_SHELL), name, "-c", cmd, NULL); - msgq(sp, M_ERR, "Error: execl: %s: %s", - O_STR(sp, O_SHELL), strerror(errno)); - _exit(127); - /* NOTREACHED */ - default: /* Parent. */ - SIGUNBLOCK(sp->gp); - - rval = proc_wait(sp, (long)pid, cmd, 0); - break; - } - - /* Restore ex/vi terminal settings. */ - if (teardown) - ex_rleave(sp); - - /* - * XXX - * Stat of the tty structures (see ex_sleave, ex_rleave) only give - * us 1-second resolution on the tty changes. A fast '!' command, - * e.g. ":!pwd" can beat us to the refresh. When there's better - * resolution from the stat(2) timers, this can go away. - */ - F_SET(sp, S_REFRESH); - - return (rval); -} |