3 * folder_addmsg.c -- Link message into folder
13 * Link message into a folder. Return the new number
14 * of the message. If an error occurs, return -1.
18 folder_addmsg (struct msgs **mpp, char *msgfile, int selected,
19 int unseen, int preserve)
21 int infd, outfd, linkerr, first_time, msgnum;
22 char *nmsg, newmsg[BUFSIZ];
26 first_time = 1; /* this is first attempt */
30 * We might need to make several attempts
31 * in order to add the message to the folder.
35 * Get the message number we will attempt to add.
38 /* should we preserve the numbering of the message? */
39 if (preserve && (msgnum = m_atoi (msgfile)) > 0) {
41 } else if (mp->nummsg == 0) {
42 /* check if we are adding to empty folder */
45 /* else use highest message number + 1 */
46 msgnum = mp->hghmsg + 1;
50 /* another attempt, so try next higher message number */
55 * See if we need more space. If we need space at the
56 * end, then we allocate space for an addition 100 messages.
57 * If we need space at the beginning of the range, then just
58 * extend message status range to cover this message number.
60 if (msgnum > mp->hghoff) {
61 if ((mp = folder_realloc (mp, mp->lowoff, msgnum + 100)))
64 advise (NULL, "unable to allocate folder storage");
67 } else if (msgnum < mp->lowoff) {
68 if ((mp = folder_realloc (mp, msgnum, mp->hghoff)))
71 advise (NULL, "unable to allocate folder storage");
77 * If a message is already in that slot,
78 * then loop to next available slot.
80 if (does_exist (mp, msgnum))
83 /* setup the bit flags for this message */
84 clear_msg_flags (mp, msgnum);
85 set_exists (mp, msgnum);
87 /* should we set the SELECT_UNSEEN bit? */
89 set_unseen (mp, msgnum);
92 /* should we set the SELECTED bit? */
94 set_selected (mp, msgnum);
96 /* check if highest or lowest selected */
97 if (mp->numsel == 0) {
101 if (msgnum < mp->lowsel)
103 if (msgnum > mp->hghsel)
107 /* increment number selected */
112 * check if this is highest or lowest message
114 if (mp->nummsg == 0) {
118 if (msgnum < mp->lowmsg)
120 if (msgnum > mp->hghmsg)
124 /* increment message count */
127 nmsg = m_name (msgnum);
128 snprintf (newmsg, sizeof(newmsg), "%s/%s", mp->foldpath, nmsg);
131 * Now try to link message into folder
133 if (link (msgfile, newmsg) != -1) {
139 if (linkerr == EISREMOTE)
141 #endif /* EISREMOTE */
144 * Check if the file in our desired location is the same
145 * as the source file. If so, then just leave it alone
146 * and return. Otherwise, we will continue the main loop
147 * and try again at another slot (hghmsg+1).
149 if (linkerr == EEXIST) {
150 if (stat (msgfile, &st2) == 0 && stat (newmsg, &st1) == 0
151 && st2.st_ino == st1.st_ino) {
159 * If link failed because we are trying to link
160 * across devices, then check if there is a message
161 * already in the desired location. If so, then return
162 * error, else just copy the message.
164 if (linkerr == EXDEV) {
165 if (stat (newmsg, &st1) == 0) {
166 advise (NULL, "message %s:%s already exists", newmsg);
169 if ((infd = open (msgfile, O_RDONLY)) == -1) {
170 advise (msgfile, "unable to open message %s");
174 if ((outfd = creat (newmsg, (int) st1.st_mode & 0777)) == -1) {
175 advise (newmsg, "unable to create");
179 cpydata (infd, outfd, msgfile, newmsg);
187 * Else, some other type of link error,
188 * so just return error.
190 advise (newmsg, "error linking %s to", msgfile);