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.
16 ** Link message into a folder. Return the new number
17 ** of the message. If an error occurs, return -1.
21 folder_addmsg(struct msgs **mpp, char *msgfile, int selected,
22 int unseen, int preserve, int deleting, char *from_dir)
24 int infd, outfd, linkerr, msgnum;
25 char *nmsg, newmsg[BUFSIZ];
32 /* should we preserve the numbering of the message? */
33 if (preserve && (msgnum = m_atoi(msgfile)) > 0) {
35 } else if (mp->nummsg == 0) {
36 /* check if we are adding to empty folder */
39 /* else use highest message number + 1 */
40 msgnum = mp->hghmsg + 1;
44 ** We might need to make several attempts
45 ** in order to add the message to the folder.
50 ** See if we need more space. If we need space at the
51 ** end, then we allocate space for an addition 100 messages.
52 ** If we need space at the beginning of the range, then just
53 ** extend message status range to cover this message number.
55 if (msgnum > mp->hghoff) {
56 if ((mp = folder_realloc(mp, mp->lowoff, msgnum + 100)))
59 advise(NULL, "unable to allocate folder storage");
62 } else if (msgnum < mp->lowoff) {
63 if ((mp = folder_realloc(mp, msgnum, mp->hghoff)))
66 advise(NULL, "unable to allocate folder storage");
72 ** If a message is already in that slot,
73 ** then loop to next available slot.
75 if (does_exist(mp, msgnum))
78 /* setup the bit flags for this message */
79 clear_msg_flags(mp, msgnum);
80 set_exists(mp, msgnum);
82 /* should we set the SELECT_UNSEEN bit? */
84 set_unseen(mp, msgnum);
87 /* should we set the SELECTED bit? */
89 set_selected(mp, msgnum);
91 /* check if highest or lowest selected */
92 if (mp->numsel == 0) {
96 if (msgnum < mp->lowsel)
98 if (msgnum > mp->hghsel)
102 /* increment number selected */
107 ** check if this is highest or lowest message
109 if (mp->nummsg == 0) {
113 if (msgnum < mp->lowmsg)
115 if (msgnum > mp->hghmsg)
119 /* increment message count */
122 nmsg = m_name(msgnum);
123 snprintf(newmsg, sizeof(newmsg), "%s/%s", mp->foldpath, nmsg);
126 ** Now try to link message into folder. Then run the
127 ** external hook on the message if one was specified in
128 ** the context. Run the refile hook if we're moving the
129 ** message from one place to another. We have to construct
130 ** the from path name for this because it's not there.
131 ** Run the add hook if the message is getting copied or
132 ** linked somewhere else.
134 if (link(msgfile, newmsg) != -1) {
137 snprintf(oldmsg, sizeof (oldmsg), "%s/%s",
139 ext_hook("ref-hook", oldmsg, newmsg);
141 ext_hook("add-hook", newmsg, NULL);
148 ** Check if the file in our desired location is
149 ** the same as the source file. If so, then just
150 ** leave it alone and return. Otherwise, we will
151 ** continue the main loop and try again at another
154 if (linkerr == EEXIST) {
155 if (stat(msgfile, &st2) == 0 && stat(newmsg, &st1) == 0
156 && st2.st_ino == st1.st_ino) {
164 ** If link failed because we are trying to link
165 ** across devices, then check if there is a message
166 ** already in the desired location. If so, then return
167 ** error, else just copy the message.
169 if (linkerr == EXDEV) {
170 if (stat(newmsg, &st1) == 0) {
171 advise(NULL, "message %s:%s already exists", mp->foldpath, newmsg);
174 if ((infd = open(msgfile, O_RDONLY)) == -1) {
175 advise(msgfile, "unable to open message %s", msgfile);
179 if ((outfd = creat(newmsg, (int) st1.st_mode & 0777)) == -1) {
180 advise(newmsg, "unable to create");
184 cpydata(infd, outfd, msgfile, newmsg);
189 snprintf(oldmsg, sizeof oldmsg,
193 ext_hook("ref-hook", oldmsg, newmsg);
195 ext_hook("add-hook", newmsg, NULL);
202 ** Else, some other type of link error,
203 ** so just return error.
205 advise(newmsg, "error linking %s to", msgfile);