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imsg no longer associates file descriptors with the imsg they were sent with,

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work around this for the moment (it is not clear if this is intentional).
This commit is contained in:
Nicholas Marriott
2024-11-22 09:58:47 +00:00
parent 1365f1ce52
commit 0f308bd18f
3 changed files with 25 additions and 7 deletions
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27
proc.c
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@ -55,6 +55,7 @@ struct tmuxpeer {
struct tmuxproc *parent;
struct imsgbuf ibuf;
int lastfd;
struct event event;
uid_t uid;
@ -71,7 +72,7 @@ static int peer_check_version(struct tmuxpeer *, struct imsg *);
static void proc_update_event(struct tmuxpeer *);
static void
proc_event_cb(__unused int fd, short events, void *arg)
proc_event_cb(int fd, short events, void *arg)
{
struct tmuxpeer *peer = arg;
ssize_t n;
@ -89,12 +90,16 @@ proc_event_cb(__unused int fd, short events, void *arg)
}
if (n == 0)
break;
log_debug("peer %p message %d", peer, imsg.hdr.type);
fd = imsg_get_fd(&imsg);
log_debug("peer %p message %d fd %d", peer,
imsg.hdr.type, fd);
if (fd != -1) {
if (peer->lastfd != -1)
close(peer->lastfd);
peer->lastfd = fd;
}
if (peer_check_version(peer, &imsg) != 0) {
fd = imsg_get_fd(&imsg);
if (fd != -1)
close(fd);
imsg_free(&imsg);
break;
}
@ -308,6 +313,7 @@ proc_add_peer(struct tmuxproc *tp, int fd,
peer = xcalloc(1, sizeof *peer);
peer->parent = tp;
peer->lastfd = -1;
peer->dispatchcb = dispatchcb;
peer->arg = arg;
@ -336,6 +342,8 @@ proc_remove_peer(struct tmuxpeer *peer)
event_del(&peer->event);
imsgbuf_clear(&peer->ibuf);
if (peer->lastfd != -1)
close(peer->lastfd);
close(peer->ibuf.fd);
free(peer);
}
@ -387,3 +395,12 @@ proc_get_peer_uid(struct tmuxpeer *peer)
{
return (peer->uid);
}
int
proc_get_last_fd(struct tmuxpeer *peer)
{
int fd = peer->lastfd;
peer->lastfd = -1;
return (fd);
}