diff options
Diffstat (limited to 'usr.sbin/sysinstall/ttys.c')
| -rw-r--r-- | usr.sbin/sysinstall/ttys.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/usr.sbin/sysinstall/ttys.c b/usr.sbin/sysinstall/ttys.c new file mode 100644 index 0000000..29f83ac --- /dev/null +++ b/usr.sbin/sysinstall/ttys.c @@ -0,0 +1,157 @@ +/* + * The new sysinstall program. + * + * This is probably the last program in the `sysinstall' line - the next + * generation being essentially a complete rewrite. + * + * $FreeBSD$ + * + * Copyright (c) 2001 + * Andrey A. Chernov. 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, + * verbatim and that no modifications are made prior to this + * point in the file. + * 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. + * + * THIS SOFTWARE IS PROVIDED BY ANDREY A. CHERNOV ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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. + * + */ + +#include "sysinstall.h" +#include <sys/stat.h> +#include <ctype.h> +#include <ttyent.h> + +#define _X_EXTENSION ".XXXXXX" + +void +configTtys(void) +{ + int len, t, tlen, changed; + FILE *fp, *np; + char sq, *line, *p, *q, *cp, *tptr; + char templ[sizeof(_PATH_TTYS) + sizeof(_X_EXTENSION) - 1]; + struct ttyent *tnam; + + if ((cp = variable_get(VAR_CONSTERM)) == NULL || + strcmp(cp, "NO") == 0) + return; + if (!file_readable(_PATH_TTYS)) { + msgConfirm("%s not exist or not readable", _PATH_TTYS); + return; + } + if ((fp = fopen(_PATH_TTYS, "r")) == NULL) { + msgConfirm("Can't open %s for read: %s", _PATH_TTYS, + strerror(errno)); + return; + } + strcpy(templ, _PATH_TTYS _X_EXTENSION); + if ((t = mkstemp(templ)) < 0) { + msgConfirm("Can't create %s: %s", templ, strerror(errno)); + (void)fclose(fp); + return; + } + if (fchmod(t, 0644)) { + msgConfirm("Can't fchmod %s: %s", templ, strerror(errno)); + (void)fclose(fp); + return; + } + if ((np = fdopen(t, "w")) == NULL) { + msgConfirm("Can't fdopen %s: %s", templ, strerror(errno)); + (void)close(t); + (void)fclose(fp); + (void)unlink(templ); + return; + } + changed = 0; + while ((line = fgetln(fp, &len)) != NULL) { + p = line; + while (p < (line + len) && isspace((unsigned char)*p)) + ++p; + if (strncmp(p, "ttyv", 4) != 0) { + dump: + if (fwrite(line, len, 1, np) != 1) { + wrerr: + msgConfirm("%s: write error: %s", templ, strerror(errno)); + (void)fclose(fp); + (void)fclose(np); + (void)unlink(templ); + return; + } + } else { + q = p; + while(q < (line + len) && !isspace((unsigned char)*q)) + ++q; + if (!isspace((unsigned char)*q)) + goto dump; + sq = *q; + *q = '\0'; + tnam = getttynam(p); + *q = sq; + if (tnam == NULL || tnam->ty_type == NULL || + strcmp(tnam->ty_type, cp) == 0 || + strncmp(tnam->ty_type, "cons", 4) != 0 || + !isdigit((unsigned char)tnam->ty_type[4]) + ) + goto dump; + tlen = strlen(tnam->ty_type); + tptr = NULL; + p = ++q; + while(p < (line + len)) { + if (strncmp(p, tnam->ty_type, tlen) == 0) { + tptr = p; + break; + } + ++p; + } + if (tptr == NULL) + goto dump; + changed = 1; + if (fwrite(line, tptr - line, 1, np) != 1 || + fputs(cp, np) || + fwrite(tptr + tlen, + len - (tptr + tlen - line), 1, np) != 1) + goto wrerr; + } + } + if (!feof(fp)) { + msgConfirm("%s: read error: %s", _PATH_TTYS, strerror(errno)); + (void)fclose(fp); + (void)fclose(np); + (void)unlink(templ); + return; + } + (void)fclose(fp); + if (fclose(np)) { + if (changed) + msgConfirm("%s: close error: %s", templ, strerror(errno)); + (void)unlink(templ); + return; + } + if (!changed) { + (void)unlink(templ); + return; + } + if (rename(templ, _PATH_TTYS)) { + msgConfirm("Can't rename %s to %s: %s", templ, _PATH_TTYS, + strerror(errno)); + return; + } +} |
