2 * folder_addmsg.c -- Link message into folder
4 * This code is Copyright (c) 2002, by the authors of nmh. See the
5 * COPYRIGHT file in the root directory of the nmh distribution for
6 * complete copyright information.
14 * Link message into a folder. Return the new number
15 * of the message. If an error occurs, return -1.
19 folder_addmsg (struct msgs **mpp, char *msgfile, int selected,
20 int unseen, int preserve, int deleting, char *from_dir)
22 int infd, outfd, linkerr, msgnum;
23 char *nmsg, newmsg[BUFSIZ];
30 /* should we preserve the numbering of the message? */
31 if (preserve && (msgnum = m_atoi (msgfile)) > 0) {
33 } else if (mp->nummsg == 0) {
34 /* check if we are adding to empty folder */
37 /* else use highest message number + 1 */
38 msgnum = mp->hghmsg + 1;
42 * We might need to make several attempts
43 * in order to add the message to the folder.
48 * See if we need more space. If we need space at the
49 * end, then we allocate space for an addition 100 messages.
50 * If we need space at the beginning of the range, then just
51 * extend message status range to cover this message number.
53 if (msgnum > mp->hghoff) {
54 if ((mp = folder_realloc (mp, mp->lowoff, msgnum + 100)))
57 advise (NULL, "unable to allocate folder storage");
60 } else if (msgnum < mp->lowoff) {
61 if ((mp = folder_realloc (mp, msgnum, mp->hghoff)))
64 advise (NULL, "unable to allocate folder storage");
70 * If a message is already in that slot,
71 * then loop to next available slot.
73 if (does_exist (mp, msgnum))
76 /* setup the bit flags for this message */
77 clear_msg_flags (mp, msgnum);
78 set_exists (mp, msgnum);
80 /* should we set the SELECT_UNSEEN bit? */
82 set_unseen (mp, msgnum);
85 /* should we set the SELECTED bit? */
87 set_selected (mp, msgnum);
89 /* check if highest or lowest selected */
90 if (mp->numsel == 0) {
94 if (msgnum < mp->lowsel)
96 if (msgnum > mp->hghsel)
100 /* increment number selected */
105 * check if this is highest or lowest message
107 if (mp->nummsg == 0) {
111 if (msgnum < mp->lowmsg)
113 if (msgnum > mp->hghmsg)
117 /* increment message count */
120 nmsg = m_name (msgnum);
121 snprintf (newmsg, sizeof(newmsg), "%s/%s", mp->foldpath, nmsg);
124 * Now try to link message into folder.
125 * Then run the external hook on the message if one was specified in the context.
126 * Run the refile hook if we're moving the message from one place to another.
127 * We have to construct the from path name for this because it's not there.
128 * Run the add hook if the message is getting copied or linked somewhere else.
130 if (link (msgfile, newmsg) != -1) {
133 (void)snprintf(oldmsg, sizeof (oldmsg), "%s/%s", from_dir, msgfile);
134 (void)ext_hook("ref-hook", oldmsg, newmsg);
136 (void)ext_hook("add-hook", newmsg, (char *)0);
143 if (linkerr == EISREMOTE)
145 #endif /* EISREMOTE */
148 * Check if the file in our desired location is the same
149 * as the source file. If so, then just leave it alone
150 * and return. Otherwise, we will continue the main loop
151 * and try again at another slot (hghmsg+1).
153 if (linkerr == EEXIST) {
154 if (stat (msgfile, &st2) == 0 && stat (newmsg, &st1) == 0
155 && st2.st_ino == st1.st_ino) {
163 * If link failed because we are trying to link
164 * across devices, then check if there is a message
165 * already in the desired location. If so, then return
166 * error, else just copy the message.
168 if (linkerr == EXDEV) {
169 if (stat (newmsg, &st1) == 0) {
170 advise (NULL, "message %s:%s already exists", mp->foldpath, newmsg);
173 if ((infd = open (msgfile, O_RDONLY)) == -1) {
174 advise (msgfile, "unable to open message %s", msgfile);
178 if ((outfd = creat (newmsg, (int) st1.st_mode & 0777)) == -1) {
179 advise (newmsg, "unable to create");
183 cpydata (infd, outfd, msgfile, newmsg);
188 (void)snprintf(oldmsg, sizeof (oldmsg), "%s/%s", from_dir, msgfile);
189 (void)ext_hook("ref-hook", oldmsg, newmsg);
191 (void)ext_hook("add-hook", newmsg, (char *)0);
198 * Else, some other type of link error,
199 * so just return error.
201 advise (newmsg, "error linking %s to", msgfile);