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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* NAME
* copyback - copy temp or whatever back to /var/mail
*
* SYNOPSIS
* void copyback()
*
* DESCRIPTION
* Copy the reduced contents of lettmp back to
* the mail file. First copy any new mail from
* the mail file to the end of lettmp.
*/
#include "mail.h"
void
copyback()
{
register int i, n;
int new = 0;
mode_t mailmode, omask;
struct stat stbuf;
void (*hstat)(), (*istat)(), (*qstat)();
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
hstat = signal(SIGHUP, SIG_IGN);
lock(my_name);
stat(mailfile, &stbuf);
mailmode = stbuf.st_mode;
/*
* Has new mail arrived?
*/
if (stbuf.st_size != let[nlet].adr) {
malf = doopen(mailfile, "r", E_FILE);
fseek(malf, let[nlet].adr, 0);
fclose(tmpf);
tmpf = doopen(lettmp, "a", E_TMP);
/*
* Append new mail assume only one new letter
*/
if (!copystream(malf, tmpf)) {
fclose(malf);
tmperr();
done(0);
}
fclose(malf);
fclose(tmpf);
tmpf = doopen(lettmp, "r+", E_TMP);
if (nlet == (MAXLET-2)) {
errmsg(E_SPACE, "");
done(0);
}
let[++nlet].adr = stbuf.st_size;
new = 1;
}
/*
* Copy mail back to mail file
*/
omask = umask(0117);
/*
* The invoker must own the mailfile being copied to
*/
if ((stbuf.st_uid != my_euid) && (stbuf.st_uid != my_uid)) {
errmsg(E_OWNR, "");
done(0);
}
/*
* If user specified the '-f' option we dont do
* the routines to handle :saved files.
* As we would(incorrectly) restore to the user's
* mailfile upon next execution!
*/
if (flgf) {
(void) strlcpy(savefile, mailfile, sizeof (savefile));
} else {
cat(savefile, mailsave, my_name);
}
if ((malf = fopen(savefile, "w")) == NULL) {
if (!flgf) {
errmsg(E_FILE, "Cannot open savefile");
} else {
errmsg(E_FILE, "Cannot re-write the alternate file");
}
done(0);
}
if (chown(savefile, mf_uid, mf_gid) == -1) {
errmsg(E_FILE, "Cannot chown savefile");
done(0);
}
umask(omask);
n = 0;
for (i = 0; i < nlet; i++) {
/*
* Note: any action other than an undelete, or a
* plain read causes the letter acted upon to be
* deleted
*/
if (let[i].change == ' ') {
if (copylet(i, malf, ORDINARY) == FALSE) {
errmsg(E_FILE, "Cannot copy mail to savefile");
(void) fprintf(stderr, "%s: A copy of your "
"mailfile is in '%s'\n", program, lettmp);
done(1); /* keep temp file */
}
n++;
}
}
fclose(malf);
if (!flgf) {
if (unlink(mailfile) != 0) {
errmsg(E_FILE, "Cannot unlink mailfile");
done(0);
}
chmod(savefile, mailmode);
#ifdef SVR4
if (rename(savefile, mailfile) != 0) {
errmsg(E_FILE, "Cannot rename savefile to mailfile");
done(0);
}
#else
if (link(savefile, mailfile) != 0) {
errmsg(E_FILE, "Cannot link savefile to mailfile");
done(0);
}
if (unlink(savefile) != 0) {
errmsg(E_FILE, "Cannot unlink save file");
done(0);
}
#endif
}
/*
* Empty mailbox?
*/
if (n == 0) {
delempty(stbuf.st_mode, mailfile);
}
if (new && !flgf) {
printf("New mail arrived\n");
}
unlock();
(void) signal(SIGINT, istat);
(void) signal(SIGQUIT, qstat);
(void) signal(SIGHUP, hstat);
}
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