3 * folder_addmsg.c -- Link message into folder
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
15 * Link message into a folder. Return the new number
16 * of the message. If an error occurs, return -1.
20 folder_addmsg (struct msgs **mpp, char *msgfile, int selected,
21 int unseen, int preserve, int deleting, char *from_dir)
23 int infd, outfd, linkerr, msgnum;
24 char *nmsg, newmsg[BUFSIZ];
31 /* should we preserve the numbering of the message? */
32 if (preserve && (msgnum = m_atoi (msgfile)) > 0) {
34 } else if (mp->nummsg == 0) {
35 /* check if we are adding to empty folder */
38 /* else use highest message number + 1 */
39 msgnum = mp->hghmsg + 1;
43 * We might need to make several attempts
44 * in order to add the message to the folder.
49 * See if we need more space. If we need space at the
50 * end, then we allocate space for an addition 100 messages.
51 * If we need space at the beginning of the range, then just
52 * extend message status range to cover this message number.
54 if (msgnum > mp->hghoff) {
55 if ((mp = folder_realloc (mp, mp->lowoff, msgnum + 100)))
58 advise (NULL, "unable to allocate folder storage");
61 } else if (msgnum < mp->lowoff) {
62 if ((mp = folder_realloc (mp, msgnum, mp->hghoff)))
65 advise (NULL, "unable to allocate folder storage");
71 * If a message is already in that slot,
72 * then loop to next available slot.
74 if (does_exist (mp, msgnum))
77 /* setup the bit flags for this message */
78 clear_msg_flags (mp, msgnum);
79 set_exists (mp, msgnum);
81 /* should we set the SELECT_UNSEEN bit? */
83 set_unseen (mp, msgnum);
86 /* should we set the SELECTED bit? */
88 set_selected (mp, msgnum);
90 /* check if highest or lowest selected */
91 if (mp->numsel == 0) {
95 if (msgnum < mp->lowsel)
97 if (msgnum > mp->hghsel)
101 /* increment number selected */
106 * check if this is highest or lowest message
108 if (mp->nummsg == 0) {
112 if (msgnum < mp->lowmsg)
114 if (msgnum > mp->hghmsg)
118 /* increment message count */
121 nmsg = m_name (msgnum);
122 snprintf (newmsg, sizeof(newmsg), "%s/%s", mp->foldpath, nmsg);
125 * Now try to link message into folder.
126 * Then run the external hook on the message if one was specified in the context.
127 * Run the refile hook if we're moving the message from one place to another.
128 * We have to construct the from path name for this because it's not there.
129 * Run the add hook if the message is getting copied or linked somewhere else.
131 if (link (msgfile, newmsg) != -1) {
134 (void)snprintf(oldmsg, sizeof (oldmsg), "%s/%s", from_dir, msgfile);
135 (void)ext_hook("ref-hook", oldmsg, newmsg);
138 (void)ext_hook("add-hook", newmsg, (char *)0);
145 if (linkerr == EISREMOTE)
147 #endif /* EISREMOTE */
150 * Check if the file in our desired location is the same
151 * as the source file. If so, then just leave it alone
152 * and return. Otherwise, we will continue the main loop
153 * and try again at another slot (hghmsg+1).
155 if (linkerr == EEXIST) {
156 if (stat (msgfile, &st2) == 0 && stat (newmsg, &st1) == 0
157 && st2.st_ino == st1.st_ino) {
165 * If link failed because we are trying to link
166 * across devices, then check if there is a message
167 * already in the desired location. If so, then return
168 * error, else just copy the message.
170 if (linkerr == EXDEV) {
171 if (stat (newmsg, &st1) == 0) {
172 advise (NULL, "message %s:%s already exists", mp->foldpath, newmsg);
175 if ((infd = open (msgfile, O_RDONLY)) == -1) {
176 advise (msgfile, "unable to open message %s", msgfile);
180 if ((outfd = creat (newmsg, (int) st1.st_mode & 0777)) == -1) {
181 advise (newmsg, "unable to create");
185 cpydata (infd, outfd, msgfile, newmsg);
190 (void)snprintf(oldmsg, sizeof (oldmsg), "%s/%s", from_dir, msgfile);
191 (void)ext_hook("ref-hook", oldmsg, newmsg);
194 (void)ext_hook("add-hook", newmsg, (char *)0);
201 * Else, some other type of link error,
202 * so just return error.
204 advise (newmsg, "error linking %s to", msgfile);