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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/mail/quit.c	Lines:	0	267	0.0 %
Date:	2016-12-06	Branches:	0	232	0.0 %


/*	$OpenBSD: quit.c,v 1.23 2016/07/19 06:43:27 deraadt Exp $	*/
/*	$NetBSD: quit.c,v 1.6 1996/12/28 07:11:07 tls Exp $	*/

/*
 * Copyright (c) 1980, 1993
 *	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. 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.
 */

#include "rcv.h"
#include <fcntl.h>
#include "extern.h"

/*
 * Rcv -- receive mail rationally.
 *
 * Termination processing.
 */

/*
 * The "quit" command.
 */
int
quitcmd(void *v)
{
	/*
	 * If we are sourcing, then return 1 so execute() can handle it.
	 * Otherwise, return -1 to abort command loop.
	 */
	if (sourcing)
		return(1);
	return(-1);
}

/*
 * Save all of the undetermined messages at the top of "mbox"
 * Save all untouched messages back in the system mailbox.
 * Remove the system mailbox, if none saved there.
 */
int
quit(void)
{
	int mcount, p, modify, autohold, anystat, holdbit, nohold;
	FILE *ibuf = NULL, *obuf, *fbuf, *rbuf, *abuf;
	struct message *mp;
	int c, fd;
	struct stat minfo;
	char *mbox, tempname[PATHSIZE];

	/*
	 * If we are read only, we can't do anything,
	 * so just return quickly.
	 */
	if (readonly)
		return(0);

	/*
	 * If editing (not reading system mail box), then do the work
	 * in edstop()
	 */
	if (edit)
		return(edstop());

	/*
	 * See if there any messages to save in mbox.  If no, we
	 * can save copying mbox to /tmp and back.
	 *
	 * Check also to see if any files need to be preserved.
	 * Delete all untouched messages to keep them out of mbox.
	 * If all the messages are to be preserved, just exit with
	 * a message.
	 */
	fbuf = Fopen(mailname, "r+");
	if (fbuf == NULL)
		goto newmail;
	if (flock(fileno(fbuf), LOCK_EX) == -1) {
		warn("Unable to lock mailbox");
		(void)Fclose(fbuf);
		return(-1);
	}
	if (!spool_lock()) {
		(void)Fclose(fbuf);
		return(-1);		/* lockspool printed the error for us */
	}
	rbuf = NULL;
	if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) {
		puts("New mail has arrived.");
		(void)snprintf(tempname, sizeof(tempname),
		    "%s/mail.RqXXXXXXXXXX", tmpdir);
		if ((fd = mkstemp(tempname)) == -1 ||
		    (rbuf = Fdopen(fd, "w")) == NULL)
			goto newmail;
#ifdef APPEND
		fseek(fbuf, (long)mailsize, SEEK_SET);
		while ((c = getc(fbuf)) != EOF)
			(void)putc(c, rbuf);
#else
		p = minfo.st_size - mailsize;
		while (p-- > 0) {
			c = getc(fbuf);
			if (c == EOF)
				goto newmail;
			(void)putc(c, rbuf);
		}
#endif
		(void)Fclose(rbuf);
		if ((rbuf = Fopen(tempname, "r")) == NULL)
			goto newmail;
		(void)rm(tempname);
	}

	/*
	 * Adjust the message flags in each message.
	 */
	anystat = 0;
	autohold = value("hold") != NULL;
	holdbit = autohold ? MPRESERVE : MBOX;
	nohold = MBOX|MSAVED|MDELETED|MPRESERVE;
	if (value("keepsave") != NULL)
		nohold &= ~MSAVED;
	for (mp = &message[0]; mp < &message[msgCount]; mp++) {
		if (mp->m_flag & MNEW) {
			mp->m_flag &= ~MNEW;
			mp->m_flag |= MSTATUS;
		}
		if (mp->m_flag & MSTATUS)
			anystat++;
		if ((mp->m_flag & MTOUCH) == 0)
			mp->m_flag |= MPRESERVE;
		if ((mp->m_flag & nohold) == 0)
			mp->m_flag |= holdbit;
	}
	modify = 0;
	for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
		if (mp->m_flag & MBOX)
			c++;
		if (mp->m_flag & MPRESERVE)
			p++;
		if (mp->m_flag & MODIFY)
			modify++;
	}
	if (p == msgCount && !modify && !anystat) {
		printf("Held %d message%s in %s\n",
			p, p == 1 ? "" : "s", mailname);
		(void)Fclose(fbuf);
		spool_unlock();
		return(0);
	}
	if (c == 0) {
		if (p != 0) {
			writeback(rbuf);
			(void)Fclose(fbuf);
			spool_unlock();
			return(0);
		}
		goto cream;
	}

	/*
	 * Create another temporary file and copy user's mbox file
	 * darin.  If there is no mbox, copy nothing.
	 * If he has specified "append" don't copy his mailbox,
	 * just copy saveable entries at the end.
	 */
	mbox = expand("&");
	mcount = c;
	if (value("append") == NULL) {
		int fdx;

		(void)snprintf(tempname, sizeof(tempname),
		    "%s/mail.RmXXXXXXXXXX", tmpdir);
		if ((fd = mkstemp(tempname)) == -1 ||
		    (obuf = Fdopen(fd, "w")) == NULL) {
			warn("%s", tempname);
			(void)Fclose(fbuf);
			spool_unlock();
			return(-1);
		}
		if ((ibuf = Fopen(tempname, "r")) == NULL) {
			warn("%s", tempname);
			(void)rm(tempname);
			(void)Fclose(obuf);
			(void)Fclose(fbuf);
			spool_unlock();
			return(-1);
		}
		(void)rm(tempname);
		if ((abuf = Fopen(mbox, "r")) != NULL) {
			while ((c = getc(abuf)) != EOF)
				(void)putc(c, obuf);
			(void)Fclose(abuf);
		}
		if (ferror(obuf)) {
			warn("%s", tempname);
			(void)Fclose(ibuf);
			(void)Fclose(obuf);
			(void)Fclose(fbuf);
			spool_unlock();
			return(-1);
		}
		(void)Fclose(obuf);
		if ((fdx = open(mbox, O_CREAT | O_TRUNC | O_WRONLY, 0600)) != -1)
			close(fdx);
		if ((obuf = Fopen(mbox, "r+")) == NULL) {
			warn("%s", mbox);
			(void)Fclose(ibuf);
			(void)Fclose(fbuf);
			spool_unlock();
			return(-1);
		}
	} else {
		if ((obuf = Fopen(mbox, "a")) == NULL) {
			warn("%s", mbox);
			(void)Fclose(fbuf);
			spool_unlock();
			return(-1);
		}
		fchmod(fileno(obuf), 0600);
	}
	for (mp = &message[0]; mp < &message[msgCount]; mp++)
		if (mp->m_flag & MBOX)
			if (sendmessage(mp, obuf, saveignore, NULL) < 0) {
				warn("%s", mbox);
				(void)Fclose(ibuf);
				(void)Fclose(obuf);
				(void)Fclose(fbuf);
				spool_unlock();
				return(-1);
			}

	/*
	 * Copy the user's old mbox contents back
	 * to the end of the stuff we just saved.
	 * If we are appending, this is unnecessary.
	 */
	if (value("append") == NULL) {
		rewind(ibuf);
		c = getc(ibuf);
		while (c != EOF) {
			(void)putc(c, obuf);
			if (ferror(obuf))
				break;
			c = getc(ibuf);
		}
		(void)Fclose(ibuf);
		fflush(obuf);
	}
	trunc(obuf);
	if (ferror(obuf)) {
		warn("%s", mbox);
		(void)Fclose(obuf);
		(void)Fclose(fbuf);
		spool_unlock();
		return(-1);
	}
	(void)Fclose(obuf);
	if (mcount == 1)
		puts("Saved 1 message in mbox");
	else
		printf("Saved %d messages in mbox\n", mcount);

	/*
	 * Now we are ready to copy back preserved files to
	 * the system mailbox, if any were requested.
	 */
	if (p != 0) {
		writeback(rbuf);
		(void)Fclose(fbuf);
		spool_unlock();
		return(0);
	}

	/*
	 * Finally, remove his /var/mail file.
	 * If new mail has arrived, copy it back.
	 */
cream:
	if (rbuf != NULL) {
		abuf = Fopen(mailname, "r+");
		if (abuf == NULL)
			goto newmail;
		while ((c = getc(rbuf)) != EOF)
			(void)putc(c, abuf);
		(void)Fclose(rbuf);
		trunc(abuf);
		(void)Fclose(abuf);
		alter(mailname);
		(void)Fclose(fbuf);
		spool_unlock();
		return(0);
	}
	demail();
	(void)Fclose(fbuf);
	spool_unlock();
	return(0);

newmail:
	puts("Thou hast new mail.");
	if (fbuf != NULL) {
		(void)Fclose(fbuf);
		spool_unlock();
	}
	return(0);
}

/*
 * Preserve all the appropriate messages back in the system
 * mailbox, and print a nice message indicated how many were
 * saved.  On any error, just return -1.  Else return 0.
 * Incorporate the any new mail that we found.
 */
int
writeback(FILE *res)
{
	struct message *mp;
	int p, c;
	FILE *obuf;

	p = 0;
	if ((obuf = Fopen(mailname, "r+")) == NULL) {
		warn("%s", mailname);
		return(-1);
	}
#ifndef APPEND
	if (res != NULL)
		while ((c = getc(res)) != EOF)
			(void)putc(c, obuf);
#endif
	for (mp = &message[0]; mp < &message[msgCount]; mp++)
		if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) {
			p++;
			if (sendmessage(mp, obuf, NULL, NULL) < 0) {
				warn("%s", mailname);
				(void)Fclose(obuf);
				return(-1);
			}
		}
#ifdef APPEND
	if (res != NULL)
		while ((c = getc(res)) != EOF)
			(void)putc(c, obuf);
#endif
	fflush(obuf);
	trunc(obuf);
	if (ferror(obuf)) {
		warn("%s", mailname);
		(void)Fclose(obuf);
		return(-1);
	}
	if (res != NULL)
		(void)Fclose(res);
	(void)Fclose(obuf);
	alter(mailname);
	if (p == 1)
		printf("Held 1 message in %s\n", mailname);
	else
		printf("Held %d messages in %s\n", p, mailname);
	return(0);
}

/*
 * Terminate an editing session by attempting to write out the user's
 * file from the temporary.  Save any new stuff appended to the file.
 */
int
edstop(void)
{
	int gotcha, c;
	struct message *mp;
	FILE *obuf, *ibuf;
	struct stat statb;
	char tempname[PATHSIZE];

	if (readonly)
		return(0);
	holdsigs();
	for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) {
		if (mp->m_flag & MNEW) {
			mp->m_flag &= ~MNEW;
			mp->m_flag |= MSTATUS;
		}
		if (mp->m_flag & (MODIFY|MDELETED|MSTATUS))
			gotcha++;
	}
	if (!gotcha)
		goto done;
	ibuf = NULL;
	if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) {
		int fd;

		(void)snprintf(tempname, sizeof(tempname), "%s/mbox.XXXXXXXXXX",
		    tmpdir);
		if ((fd = mkstemp(tempname)) == -1 ||
		    (obuf = Fdopen(fd, "w")) == NULL) {
			warn("%s", tempname);
			if (fd != -1)
				close(fd);
			relsesigs();
			return(-1);
		}
		if ((ibuf = Fopen(mailname, "r")) == NULL) {
			warn("%s", mailname);
			(void)Fclose(obuf);
			(void)rm(tempname);
			relsesigs();
			return(-1);
		}
		fseek(ibuf, (long)mailsize, SEEK_SET);
		while ((c = getc(ibuf)) != EOF)
			(void)putc(c, obuf);
		(void)Fclose(ibuf);
		(void)Fclose(obuf);
		if ((ibuf = Fopen(tempname, "r")) == NULL) {
			warn("%s", tempname);
			(void)rm(tempname);
			relsesigs();
			return(-1);
		}
		(void)rm(tempname);
	}
	printf("\"%s\" ", mailname);
	fflush(stdout);
	if ((obuf = Fopen(mailname, "r+")) == NULL) {
		warn("%s", mailname);
		relsesigs();
		return(-1);
	}
	trunc(obuf);
	c = 0;
	for (mp = &message[0]; mp < &message[msgCount]; mp++) {
		if ((mp->m_flag & MDELETED) != 0)
			continue;
		c++;
		if (sendmessage(mp, obuf, NULL, NULL) < 0) {
			warn("%s", mailname);
			relsesigs();
			return(-1);
		}
	}
	gotcha = (c == 0 && ibuf == NULL);
	if (ibuf != NULL) {
		while ((c = getc(ibuf)) != EOF)
			(void)putc(c, obuf);
		(void)Fclose(ibuf);
	}
	fflush(obuf);
	if (ferror(obuf)) {
		warn("%s", mailname);
		relsesigs();
		return(-1);
	}
	(void)Fclose(obuf);
	if (gotcha) {
		(void)rm(mailname);
		puts("removed");
	} else
		puts("complete");
	fflush(stdout);

done:
	relsesigs();
	return(0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: quit.c,v 1.23 2016/07/19 06:43:27 deraadt Exp $ */
2			/* $NetBSD: quit.c,v 1.6 1996/12/28 07:11:07 tls Exp $ */
3
4			/*
5			* Copyright (c) 1980, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include "rcv.h"
34			#include <fcntl.h>
35			#include "extern.h"
36
37			/*
38			* Rcv -- receive mail rationally.
39			*
40			* Termination processing.
41			*/
42
43			/*
44			* The "quit" command.
45			*/
46			int
47			quitcmd(void *v)
48			{
49			/*
50			* If we are sourcing, then return 1 so execute() can handle it.
51			* Otherwise, return -1 to abort command loop.
52			*/
53			if (sourcing)
54			return(1);
55			return(-1);
56			}
57
58			/*
59			* Save all of the undetermined messages at the top of "mbox"
60			* Save all untouched messages back in the system mailbox.
61			* Remove the system mailbox, if none saved there.
62			*/
63			int
64			quit(void)
65			{
66			int mcount, p, modify, autohold, anystat, holdbit, nohold;
67			FILE ibuf = NULL, obuf, fbuf, rbuf, *abuf;
68			struct message *mp;
69			int c, fd;
70			struct stat minfo;
71			char *mbox, tempname[PATHSIZE];
72
73			/*
74			* If we are read only, we can't do anything,
75			* so just return quickly.
76			*/
77			if (readonly)
78			return(0);
79
80			/*
81			* If editing (not reading system mail box), then do the work
82			* in edstop()
83			*/
84			if (edit)
85			return(edstop());
86
87			/*
88			* See if there any messages to save in mbox. If no, we
89			* can save copying mbox to /tmp and back.
90			*
91			* Check also to see if any files need to be preserved.
92			* Delete all untouched messages to keep them out of mbox.
93			* If all the messages are to be preserved, just exit with
94			* a message.
95			*/
96			fbuf = Fopen(mailname, "r+");
97			if (fbuf == NULL)
98			goto newmail;
99			if (flock(fileno(fbuf), LOCK_EX) == -1) {
100			warn("Unable to lock mailbox");
101			(void)Fclose(fbuf);
102			return(-1);
103			}
104			if (!spool_lock()) {
105			(void)Fclose(fbuf);
106			return(-1); /* lockspool printed the error for us */
107			}
108			rbuf = NULL;
109			if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) {
110			puts("New mail has arrived.");
111			(void)snprintf(tempname, sizeof(tempname),
112			"%s/mail.RqXXXXXXXXXX", tmpdir);
113			if ((fd = mkstemp(tempname)) == -1 \|\|
114			(rbuf = Fdopen(fd, "w")) == NULL)
115			goto newmail;
116			#ifdef APPEND
117			fseek(fbuf, (long)mailsize, SEEK_SET);
118			while ((c = getc(fbuf)) != EOF)
119			(void)putc(c, rbuf);
120			#else
121			p = minfo.st_size - mailsize;
122			while (p-- > 0) {
123			c = getc(fbuf);
124			if (c == EOF)
125			goto newmail;
126			(void)putc(c, rbuf);
127			}
128			#endif
129			(void)Fclose(rbuf);
130			if ((rbuf = Fopen(tempname, "r")) == NULL)
131			goto newmail;
132			(void)rm(tempname);
133			}
134
135			/*
136			* Adjust the message flags in each message.
137			*/
138			anystat = 0;
139			autohold = value("hold") != NULL;
140			holdbit = autohold ? MPRESERVE : MBOX;
141			nohold = MBOX\|MSAVED\|MDELETED\|MPRESERVE;
142			if (value("keepsave") != NULL)
143			nohold &= ~MSAVED;
144			for (mp = &message[0]; mp < &message[msgCount]; mp++) {
145			if (mp->m_flag & MNEW) {
146			mp->m_flag &= ~MNEW;
147			mp->m_flag \|= MSTATUS;
148			}
149			if (mp->m_flag & MSTATUS)
150			anystat++;
151			if ((mp->m_flag & MTOUCH) == 0)
152			mp->m_flag \|= MPRESERVE;
153			if ((mp->m_flag & nohold) == 0)
154			mp->m_flag \|= holdbit;
155			}
156			modify = 0;
157			for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) {
158			if (mp->m_flag & MBOX)
159			c++;
160			if (mp->m_flag & MPRESERVE)
161			p++;
162			if (mp->m_flag & MODIFY)
163			modify++;
164			}
165			if (p == msgCount && !modify && !anystat) {
166			printf("Held %d message%s in %s\n",
167			p, p == 1 ? "" : "s", mailname);
168			(void)Fclose(fbuf);
169			spool_unlock();
170			return(0);
171			}
172			if (c == 0) {
173			if (p != 0) {
174			writeback(rbuf);
175			(void)Fclose(fbuf);
176			spool_unlock();
177			return(0);
178			}
179			goto cream;
180			}
181
182			/*
183			* Create another temporary file and copy user's mbox file
184			* darin. If there is no mbox, copy nothing.
185			* If he has specified "append" don't copy his mailbox,
186			* just copy saveable entries at the end.
187			*/
188			mbox = expand("&");
189			mcount = c;
190			if (value("append") == NULL) {
191			int fdx;
192
193			(void)snprintf(tempname, sizeof(tempname),
194			"%s/mail.RmXXXXXXXXXX", tmpdir);
195			if ((fd = mkstemp(tempname)) == -1 \|\|
196			(obuf = Fdopen(fd, "w")) == NULL) {
197			warn("%s", tempname);
198			(void)Fclose(fbuf);
199			spool_unlock();
200			return(-1);
201			}
202			if ((ibuf = Fopen(tempname, "r")) == NULL) {
203			warn("%s", tempname);
204			(void)rm(tempname);
205			(void)Fclose(obuf);
206			(void)Fclose(fbuf);
207			spool_unlock();
208			return(-1);
209			}
210			(void)rm(tempname);
211			if ((abuf = Fopen(mbox, "r")) != NULL) {
212			while ((c = getc(abuf)) != EOF)
213			(void)putc(c, obuf);
214			(void)Fclose(abuf);
215			}
216			if (ferror(obuf)) {
217			warn("%s", tempname);
218			(void)Fclose(ibuf);
219			(void)Fclose(obuf);
220			(void)Fclose(fbuf);
221			spool_unlock();
222			return(-1);
223			}
224			(void)Fclose(obuf);
225			if ((fdx = open(mbox, O_CREAT \| O_TRUNC \| O_WRONLY, 0600)) != -1)
226			close(fdx);
227			if ((obuf = Fopen(mbox, "r+")) == NULL) {
228			warn("%s", mbox);
229			(void)Fclose(ibuf);
230			(void)Fclose(fbuf);
231			spool_unlock();
232			return(-1);
233			}
234			} else {
235			if ((obuf = Fopen(mbox, "a")) == NULL) {
236			warn("%s", mbox);
237			(void)Fclose(fbuf);
238			spool_unlock();
239			return(-1);
240			}
241			fchmod(fileno(obuf), 0600);
242			}
243			for (mp = &message[0]; mp < &message[msgCount]; mp++)
244			if (mp->m_flag & MBOX)
245			if (sendmessage(mp, obuf, saveignore, NULL) < 0) {
246			warn("%s", mbox);
247			(void)Fclose(ibuf);
248			(void)Fclose(obuf);
249			(void)Fclose(fbuf);
250			spool_unlock();
251			return(-1);
252			}
253
254			/*
255			* Copy the user's old mbox contents back
256			* to the end of the stuff we just saved.
257			* If we are appending, this is unnecessary.
258			*/
259			if (value("append") == NULL) {
260			rewind(ibuf);
261			c = getc(ibuf);
262			while (c != EOF) {
263			(void)putc(c, obuf);
264			if (ferror(obuf))
265			break;
266			c = getc(ibuf);
267			}
268			(void)Fclose(ibuf);
269			fflush(obuf);
270			}
271			trunc(obuf);
272			if (ferror(obuf)) {
273			warn("%s", mbox);
274			(void)Fclose(obuf);
275			(void)Fclose(fbuf);
276			spool_unlock();
277			return(-1);
278			}
279			(void)Fclose(obuf);
280			if (mcount == 1)
281			puts("Saved 1 message in mbox");
282			else
283			printf("Saved %d messages in mbox\n", mcount);
284
285			/*
286			* Now we are ready to copy back preserved files to
287			* the system mailbox, if any were requested.
288			*/
289			if (p != 0) {
290			writeback(rbuf);
291			(void)Fclose(fbuf);
292			spool_unlock();
293			return(0);
294			}
295
296			/*
297			* Finally, remove his /var/mail file.
298			* If new mail has arrived, copy it back.
299			*/
300			cream:
301			if (rbuf != NULL) {
302			abuf = Fopen(mailname, "r+");
303			if (abuf == NULL)
304			goto newmail;
305			while ((c = getc(rbuf)) != EOF)
306			(void)putc(c, abuf);
307			(void)Fclose(rbuf);
308			trunc(abuf);
309			(void)Fclose(abuf);
310			alter(mailname);
311			(void)Fclose(fbuf);
312			spool_unlock();
313			return(0);
314			}
315			demail();
316			(void)Fclose(fbuf);
317			spool_unlock();
318			return(0);
319
320			newmail:
321			puts("Thou hast new mail.");
322			if (fbuf != NULL) {
323			(void)Fclose(fbuf);
324			spool_unlock();
325			}
326			return(0);
327			}
328
329			/*
330			* Preserve all the appropriate messages back in the system
331			* mailbox, and print a nice message indicated how many were
332			* saved. On any error, just return -1. Else return 0.
333			* Incorporate the any new mail that we found.
334			*/
335			int
336			writeback(FILE *res)
337			{
338			struct message *mp;
339			int p, c;
340			FILE *obuf;
341
342			p = 0;
343			if ((obuf = Fopen(mailname, "r+")) == NULL) {
344			warn("%s", mailname);
345			return(-1);
346			}
347			#ifndef APPEND
348			if (res != NULL)
349			while ((c = getc(res)) != EOF)
350			(void)putc(c, obuf);
351			#endif
352			for (mp = &message[0]; mp < &message[msgCount]; mp++)
353			if ((mp->m_flag&MPRESERVE)\|\|(mp->m_flag&MTOUCH)==0) {
354			p++;
355			if (sendmessage(mp, obuf, NULL, NULL) < 0) {
356			warn("%s", mailname);
357			(void)Fclose(obuf);
358			return(-1);
359			}
360			}
361			#ifdef APPEND
362			if (res != NULL)
363			while ((c = getc(res)) != EOF)
364			(void)putc(c, obuf);
365			#endif
366			fflush(obuf);
367			trunc(obuf);
368			if (ferror(obuf)) {
369			warn("%s", mailname);
370			(void)Fclose(obuf);
371			return(-1);
372			}
373			if (res != NULL)
374			(void)Fclose(res);
375			(void)Fclose(obuf);
376			alter(mailname);
377			if (p == 1)
378			printf("Held 1 message in %s\n", mailname);
379			else
380			printf("Held %d messages in %s\n", p, mailname);
381			return(0);
382			}
383
384			/*
385			* Terminate an editing session by attempting to write out the user's
386			* file from the temporary. Save any new stuff appended to the file.
387			*/
388			int
389			edstop(void)
390			{
391			int gotcha, c;
392			struct message *mp;
393			FILE obuf, ibuf;
394			struct stat statb;
395			char tempname[PATHSIZE];
396
397			if (readonly)
398			return(0);
399			holdsigs();
400			for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) {
401			if (mp->m_flag & MNEW) {
402			mp->m_flag &= ~MNEW;
403			mp->m_flag \|= MSTATUS;
404			}
405			if (mp->m_flag & (MODIFY\|MDELETED\|MSTATUS))
406			gotcha++;
407			}
408			if (!gotcha)
409			goto done;
410			ibuf = NULL;
411			if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) {
412			int fd;
413
414			(void)snprintf(tempname, sizeof(tempname), "%s/mbox.XXXXXXXXXX",
415			tmpdir);
416			if ((fd = mkstemp(tempname)) == -1 \|\|
417			(obuf = Fdopen(fd, "w")) == NULL) {
418			warn("%s", tempname);
419			if (fd != -1)
420			close(fd);
421			relsesigs();
422			return(-1);
423			}
424			if ((ibuf = Fopen(mailname, "r")) == NULL) {
425			warn("%s", mailname);
426			(void)Fclose(obuf);
427			(void)rm(tempname);
428			relsesigs();
429			return(-1);
430			}
431			fseek(ibuf, (long)mailsize, SEEK_SET);
432			while ((c = getc(ibuf)) != EOF)
433			(void)putc(c, obuf);
434			(void)Fclose(ibuf);
435			(void)Fclose(obuf);
436			if ((ibuf = Fopen(tempname, "r")) == NULL) {
437			warn("%s", tempname);
438			(void)rm(tempname);
439			relsesigs();
440			return(-1);
441			}
442			(void)rm(tempname);
443			}
444			printf("\"%s\" ", mailname);
445			fflush(stdout);
446			if ((obuf = Fopen(mailname, "r+")) == NULL) {
447			warn("%s", mailname);
448			relsesigs();
449			return(-1);
450			}
451			trunc(obuf);
452			c = 0;
453			for (mp = &message[0]; mp < &message[msgCount]; mp++) {
454			if ((mp->m_flag & MDELETED) != 0)
455			continue;
456			c++;
457			if (sendmessage(mp, obuf, NULL, NULL) < 0) {
458			warn("%s", mailname);
459			relsesigs();
460			return(-1);
461			}
462			}
463			gotcha = (c == 0 && ibuf == NULL);
464			if (ibuf != NULL) {
465			while ((c = getc(ibuf)) != EOF)
466			(void)putc(c, obuf);
467			(void)Fclose(ibuf);
468			}
469			fflush(obuf);
470			if (ferror(obuf)) {
471			warn("%s", mailname);
472			relsesigs();
473			return(-1);
474			}
475			(void)Fclose(obuf);
476			if (gotcha) {
477			(void)rm(mailname);
478			puts("removed");
479			} else
480			puts("complete");
481			fflush(stdout);
482
483			done:
484			relsesigs();
485			return(0);
486			}