int
ud_create_socket(const char *name, mode_t socketmode)
{
int fd;
int r;
struct sockaddr_un uds_addr;
if (strnlen(name, sizeof(uds_addr.sun_path)) >
sizeof(uds_addr.sun_path) - 1) {
acpid_log(LOG_ERR, "ud_create_socket(): "
"socket filename longer than %zu characters: %s",
sizeof(uds_addr.sun_path) - 1, name);
errno = EINVAL;
return -1;
}
/* JIC */
unlink(name);
fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
if (fd < 0) {
return fd;
}
/* Clear the umask to guarantee predictable results from fchmod(). */
umask(0);
if (fchmod(fd, socketmode) < 0) {
close(fd);
acpid_log(LOG_ERR, "fchmod() on socket %s: %s",
name, strerror(errno));
return -1;
}
/* setup address struct */
memset(&uds_addr, 0, sizeof(uds_addr));
uds_addr.sun_family = AF_UNIX;
strncpy(uds_addr.sun_path, name, sizeof(uds_addr.sun_path) - 1);
/* bind it to the socket */
r = bind(fd, (struct sockaddr *)&uds_addr, sizeof(uds_addr));
if (r < 0) {
close (fd);
return r;
}
/* listen - allow 10 to queue */
r = listen(fd, 10);
if (r < 0) {
close(fd);
return r;
}
return fd;
}
static char *
read_line(int fd)
{
static char *buf;
int buflen = 64;
int i = 0;
int r;
int searching = 1;
while (searching) {
/* ??? This memory is leaked since it is never freed */
buf = realloc(buf, buflen);
if (!buf) {
acpid_log(LOG_ERR, "malloc(%d): %s",
buflen, strerror(errno));
return NULL;
}
memset(buf+i, 0, buflen-i);
while (i < buflen) {
r = read(fd, buf+i, 1);
if (r < 0 && errno != EINTR) {
/* we should do something with the data */
acpid_log(LOG_ERR, "read(): %s",
strerror(errno));
return NULL;
} else if (r == 0) {
/* signal this in an almost standard way */
errno = EPIPE;
return NULL;
} else if (r == 1) {
/* scan for a newline */
if (buf[i] == '\n') {
searching = 0;
buf[i] = '\0';
break;
}
i++;
}
}
if (buflen >= MAX_BUFLEN) {
break;
}
buflen *= 2;
}
return buf;
}
static int
create_pidfile(void)
{
int fd;
/* JIC */
unlink(pidfile);
/* open the pidfile */
fd = open(pidfile, O_WRONLY|O_CREAT|O_EXCL, 0644);
if (fd >= 0) {
FILE *f;
/* write our pid to it */
f = fdopen(fd, "w");
if (f != NULL) {
fprintf(f, "%d\n", getpid());
fclose(f);
/* leave the fd open */
return 0;
}
close(fd);
}
/* something went wrong */
acpid_log(LOG_ERR, "can't create pidfile %s: %s\n",
pidfile, strerror(errno));
return -1;
}
int
ud_connect(const char *name)
{
int fd;
int r;
struct sockaddr_un addr;
if (strnlen(name, sizeof(addr.sun_path)) > sizeof(addr.sun_path) - 1) {
acpid_log(LOG_ERR, "ud_connect(): "
"socket filename longer than %zu characters: %s",
sizeof(addr.sun_path) - 1, name);
errno = EINVAL;
return -1;
}
fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
if (fd < 0) {
return fd;
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
sprintf(addr.sun_path, "%s", name);
/* safer: */
/*strncpy(addr.sun_path, name, sizeof(addr.sun_path) - 1);*/
r = connect(fd, (struct sockaddr *)&addr, sizeof(addr));
if (r < 0) {
close(fd);
return r;
}
return fd;
}
static void
reload_conf(int sig __attribute__((unused)))
{
acpid_log(LOG_NOTICE, "reloading configuration\n");
acpid_cleanup_rules(0);
acpid_read_conf(confdir);
}
static void
clean_exit_with_status(int status)
{
acpid_cleanup_rules(1);
acpid_log(LOG_NOTICE, "exiting\n");
unlink(pidfile);
exit(status);
}
static void
process_proc(int fd)
{
char *event;
/* read an event */
event = read_line(fd);
/* if we're locked, don't process the event */
if (locked()) {
if (logevents && event != NULL) {
acpid_log(LOG_INFO,
"lockfile present, not processing "
"event \"%s\"", event);
}
return;
}
/* handle the event */
if (event) {
if (logevents) {
acpid_log(LOG_INFO,
"procfs received event \"%s\"", event);
}
acpid_handle_event(event);
if (logevents) {
acpid_log(LOG_INFO,
"procfs completed event \"%s\"", event);
}
} else if (errno == EPIPE) {
acpid_log(LOG_WARNING,
"events file connection closed");
exit(EXIT_FAILURE);
} else {
static int nerrs;
if (++nerrs >= ACPID_MAX_ERRS) {
acpid_log(LOG_ERR,
"too many errors reading "
"events file - aborting");
exit(EXIT_FAILURE);
}
}
}
/* accept a new client connection */
static void
process_sock(int fd)
{
int cli_fd;
struct ucred creds;
char *buf;
static int accept_errors;
/* accept and add to our lists */
cli_fd = ud_accept(fd, &creds);
if (cli_fd < 0) {
acpid_log(LOG_ERR, "can't accept client: %s",
strerror(errno));
accept_errors++;
if (accept_errors >= 5) {
acpid_log(LOG_ERR, "giving up");
clean_exit_with_status(EXIT_FAILURE);
}
return;
}
accept_errors = 0;
/* don't allow too many non-root clients */
if (creds.uid != 0 && non_root_clients >= clientmax) {
close(cli_fd);
acpid_log(LOG_ERR, "too many non-root clients");
return;
}
if (creds.uid != 0) {
non_root_clients++;
}
if(asprintf(&buf, "%d[%d:%d]", creds.pid, creds.uid, creds.gid) < 0) {
close(cli_fd);
acpid_log(LOG_ERR, "asprintf: %s", strerror(errno));
return;
}
acpid_add_client(cli_fd, buf);
free(buf);
}
/* Set up an inotify watch on /dev/input. */
void open_inotify(void)
{
int fd = -1;
int wd = -1;
struct connection c;
/* set up inotify */
fd = inotify_init1(IN_CLOEXEC);
if (fd < 0) {
acpid_log(LOG_ERR, "inotify_init() failed: %s (%d)",
strerror(errno), errno);
return;
}
acpid_log(LOG_DEBUG, "inotify fd: %d", fd);
/* watch for files being created or deleted in /dev/input */
wd = inotify_add_watch(fd, ACPID_INPUTLAYERDIR, IN_CREATE | IN_DELETE);
if (wd < 0) {
acpid_log(LOG_ERR, "inotify_add_watch() failed: %s (%d)",
strerror(errno), errno);
close(fd);
return;
}
acpid_log(LOG_DEBUG, "inotify wd: %d", wd);
/* add a connection to the list */
c.fd = fd;
c.process = process_inotify;
c.pathname = NULL;
c.kybd = 0;
add_connection(&c);
}
int
open_proc()
{
int fd;
struct connection c;
/* O_CLOEXEC: Make sure scripts we exec() (in event.c) don't get our file
descriptors. */
fd = open(eventfile, O_RDONLY | O_CLOEXEC);
if (fd < 0) {
if (errno == ENOENT) {
acpid_log(LOG_DEBUG, "Deprecated %s was not found. "
"Trying netlink and the input layer...", eventfile);
} else {
acpid_log(LOG_ERR, "can't open %s: %s (%d)", eventfile,
strerror(errno), errno);
}
return -1;
}
acpid_log(LOG_DEBUG, "proc fs opened successfully");
/* add a connection to the list */
c.fd = fd;
c.process = process_proc;
c.pathname = NULL;
c.kybd = 0;
if (add_connection(&c) < 0) {
close(fd);
acpid_log(LOG_ERR, "can't add connection for %s", eventfile);
return -1;
}
return 0;
}
static char *
read_line(int fd)
{
static char buf[BUFLEN];
int i = 0;
int r;
int searching = 1;
while (searching) {
memset(buf+i, 0, BUFLEN-i);
/* only go to BUFLEN-1 so there will always be a 0 at the end */
while (i < BUFLEN-1) {
r = TEMP_FAILURE_RETRY(read(fd, buf+i, 1));
if (r < 0) {
/* we should do something with the data */
acpid_log(LOG_ERR, "read(): %s",
strerror(errno));
return NULL;
} else if (r == 0) {
/* signal this in an almost standard way */
errno = EPIPE;
return NULL;
} else if (r == 1) {
/* scan for a newline */
if (buf[i] == '\n') {
searching = 0;
buf[i] = '\0';
break;
}
i++;
}
}
if (i >= BUFLEN - 1)
break;
}
return buf;
}
void
add_connection(struct connection *p)
{
if (nconnections < 0)
return;
if (nconnections >= MAX_CONNECTIONS) {
acpid_log(LOG_ERR, "Too many connections.\n");
/* ??? This routine should return -1 in this situation so that */
/* callers can clean up any open fds and whatnot. */
return;
}
if (nconnections == 0)
FD_ZERO(&allfds);
/* add the connection to the connection list */
connection_list[nconnections] = *p;
++nconnections;
/* add to the fd set */
FD_SET(p->fd, &allfds);
highestfd = max(highestfd, p->fd);
}
/* set up the socket for client connections */
void
open_sock()
{
int fd;
struct connection c;
/* if this is a socket passed in via stdin by systemd */
if (is_socket(STDIN_FILENO)) {
fd = STDIN_FILENO;
/* ??? Move CLOEXEC and NONBLOCK settings below up to here? */
} else {
/* create our own socket */
fd = ud_create_socket(socketfile, socketmode);
if (fd < 0) {
acpid_log(LOG_ERR, "can't open socket %s: %s",
socketfile, strerror(errno));
exit(EXIT_FAILURE);
}
/* if we need to change the socket's group, do so */
if (socketgroup) {
struct group *gr;
struct stat buf;
gr = getgrnam(socketgroup);
if (!gr) {
acpid_log(LOG_ERR, "group %s does not exist", socketgroup);
exit(EXIT_FAILURE);
}
if (fstat(fd, &buf) < 0) {
acpid_log(LOG_ERR, "can't stat %s: %s",
socketfile, strerror(errno));
exit(EXIT_FAILURE);
}
/* ??? I've tried using fchown(), however it doesn't work here.
* It also doesn't work before bind(). The GNU docs seem to
* indicate it isn't supposed to work with sockets. */
/* if (fchown(fd, buf.st_uid, gr->gr_gid) < 0) { */
if (chown(socketfile, buf.st_uid, gr->gr_gid) < 0) {
acpid_log(LOG_ERR, "can't chown %s: %s",
socketfile, strerror(errno));
exit(EXIT_FAILURE);
}
}
}
/* Don't leak fds when execing.
* ud_create_socket() already does this, but there is no guarantee that
* a socket sent in via STDIN will have this set. */
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
close(fd);
acpid_log(LOG_ERR, "fcntl() on socket %s for FD_CLOEXEC: %s",
socketfile, strerror(errno));
return;
}
/* Avoid a potential hang.
* ud_create_socket() already does this, but there is no guarantee that
* a socket sent in via STDIN will have this set. */
if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
close(fd);
acpid_log(LOG_ERR, "fcntl() on socket %s for O_NONBLOCK: %s",
socketfile, strerror(errno));
return;
}
/* add a connection to the list */
c.fd = fd;
c.process = process_sock;
c.pathname = NULL;
c.kybd = 0;
if (add_connection(&c) < 0) {
close(fd);
acpid_log(LOG_ERR, "can't add connection for socket %s",
socketfile);
return;
}
}
static void
format_netlink(struct nlmsghdr *msg)
{
struct rtattr *tb[ACPI_GENL_ATTR_MAX + 1];
struct genlmsghdr *ghdr = NLMSG_DATA(msg);
int len;
struct rtattr *attrs;
len = msg->nlmsg_len;
/* if this message doesn't have the proper family ID, drop it */
if (msg->nlmsg_type != acpi_ids_getfamily()) {
if (logevents) {
acpid_log(LOG_INFO, "wrong netlink family ID.\n");
}
return;
}
len -= NLMSG_LENGTH(GENL_HDRLEN);
if (len < 0) {
acpid_log(LOG_WARNING,
"wrong netlink controller message len: %d\n", len);
return;
}
attrs = (struct rtattr *)((char *)ghdr + GENL_HDRLEN);
/* parse the attributes in this message */
parse_rtattr(tb, ACPI_GENL_ATTR_MAX, attrs, len);
/* if there's an ACPI event attribute... */
if (tb[ACPI_GENL_ATTR_EVENT]) {
/* get the actual event struct */
struct acpi_genl_event *event =
RTA_DATA(tb[ACPI_GENL_ATTR_EVENT]);
char buf[64];
/* format it */
snprintf(buf, sizeof(buf), "%s %s %08x %08x",
event->device_class, event->bus_id, event->type, event->data);
/* if we're locked, don't process the event */
if (locked()) {
if (logevents) {
acpid_log(LOG_INFO,
"lockfile present, not processing "
"netlink event \"%s\"\n", buf);
}
return;
}
if (logevents)
acpid_log(LOG_INFO,
"received netlink event \"%s\"\n", buf);
/* send the event off to the handler */
acpid_handle_event(buf);
if (logevents)
acpid_log(LOG_INFO,
"completed netlink event \"%s\"\n", buf);
}
}
/* (based on rtnl_listen() in libnetlink.c) */
void
process_netlink(int fd)
{
int status;
struct nlmsghdr *h;
/* the address for recvmsg() */
struct sockaddr_nl nladdr;
/* the io vector for recvmsg() */
struct iovec iov;
/* recvmsg() parameters */
struct msghdr msg = {
.msg_name = &nladdr,
.msg_namelen = sizeof(nladdr),
.msg_iov = &iov,
.msg_iovlen = 1,
};
/* buffer for the incoming data */
char buf[8192];
static int nerrs;
/* set up the netlink address */
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
nladdr.nl_pid = 0;
nladdr.nl_groups = 0;
/* set up the I/O vector */
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
/* read the data into the buffer */
status = recvmsg(fd, &msg, 0);
/* if there was a problem, print a message and keep trying */
if (status < 0) {
/* if we were interrupted by a signal, bail */
if (errno == EINTR)
return;
acpid_log(LOG_ERR, "netlink read error: %s (%d)\n",
strerror(errno), errno);
if (++nerrs >= ACPID_MAX_ERRS) {
acpid_log(LOG_ERR,
"too many errors reading via "
"netlink - aborting\n");
exit(EXIT_FAILURE);
}
return;
}
/* if an orderly shutdown has occurred, we're done */
if (status == 0) {
acpid_log(LOG_WARNING, "netlink connection closed\n");
exit(EXIT_FAILURE);
}
/* check to see if the address length has changed */
if (msg.msg_namelen != sizeof(nladdr)) {
acpid_log(LOG_WARNING, "netlink unexpected length: "
"%d expected: %d\n", msg.msg_namelen, sizeof(nladdr));
return;
}
/* for each message received */
for (h = (struct nlmsghdr*)buf; (unsigned)status >= sizeof(*h); ) {
int len = h->nlmsg_len;
int l = len - sizeof(*h);
if (l < 0 || len > status) {
if (msg.msg_flags & MSG_TRUNC) {
acpid_log(LOG_WARNING, "netlink msg truncated (1)\n");
return;
}
acpid_log(LOG_WARNING,
"malformed netlink msg, length %d\n", len);
return;
}
/* format the message */
format_netlink(h);
status -= NLMSG_ALIGN(len);
h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
}
if (msg.msg_flags & MSG_TRUNC) {
acpid_log(LOG_WARNING, "netlink msg truncated (2)\n");
return;
}
if (status) {
acpid_log(LOG_WARNING, "netlink remnant of size %d\n", status);
return;
}
return;
}
/* convert the netlink multicast group number into a bit map */
/* (e.g. 4 => 16, 5 => 32) */
static __u32
nl_mgrp(__u32 group)
{
if (group > 31) {
acpid_log(LOG_ERR, "Unexpected group number %d\n", group);
return 0;
}
return group ? (1 << (group - 1)) : 0;
}
void open_netlink(void)
{
struct rtnl_handle rth;
struct connection c;
/* open the appropriate netlink socket for input */
if (rtnl_open_byproto(
&rth, nl_mgrp(acpi_ids_getgroup()), NETLINK_GENERIC) < 0) {
acpid_log(LOG_ERR, "cannot open generic netlink socket\n");
return;
}
acpid_log(LOG_DEBUG, "netlink opened successfully\n");
/* add a connection to the list */
c.fd = rth.fd;
c.process = process_netlink;
add_connection(&c);
}
int
main(int argc, char **argv)
{
int event_fd;
int sock_fd = -1; /* init to avoid a compiler warning */
/* learn who we really are */
progname = (const char *)strrchr(argv[0], '/');
progname = progname ? (progname + 1) : argv[0];
/* handle the commandline */
handle_cmdline(&argc, &argv);
/* close any extra file descriptors */
close_fds();
/* actually open the event file */
event_fd = open(eventfile, O_RDONLY);
if (event_fd < 0) {
fprintf(stderr, "%s: can't open %s: %s\n", progname,
eventfile, strerror(errno));
exit(EXIT_FAILURE);
}
fcntl(event_fd, F_SETFD, FD_CLOEXEC);
/*
* if there is data, and the kernel is NOT broken, this eats 1 byte. We
* can't have that. This is ifdef'ed out on the assumption that old kernels
* are out of popular use, by now.
*/
#ifdef TEST_FOR_BAD_KERNELS
/*
* Older kernels did not support read() properly or poll() at all
* Check that the kernel supports the proper semantics, or die.
*
* Good kernels will respect O_NONBLOCK and return -1. Bad kernels
* will ignore O_NONBLOCK and return 0. Really bad kernels will block
* and overflow the buffer. Can't deal with the really bad ones.
*/
{
int fl;
char buf;
fl = fcntl(event_fd, F_GETFL);
fcntl(event_fd, F_SETFL, fl | O_NONBLOCK);
if (read(event_fd, &buf, 1) == 0) {
fprintf(stderr,
"%s: this kernel does not support proper "
"event file handling.\n"
"Please get the patch from "
"http://acpid.sourceforge.net\n",
progname);
exit(EXIT_FAILURE);
}
fcntl(event_fd, F_SETFL, fl);
}
#endif
/* open our socket */
if (!nosocket) {
sock_fd = ud_create_socket(socketfile);
if (sock_fd < 0) {
fprintf(stderr, "%s: can't open socket %s: %s\n",
progname, socketfile, strerror(errno));
exit(EXIT_FAILURE);
}
fcntl(sock_fd, F_SETFD, FD_CLOEXEC);
chmod(socketfile, socketmode);
if (socketgroup) {
struct group *gr;
struct stat buf;
gr = getgrnam(socketgroup);
if (!gr) {
fprintf(stderr, "%s: group %s does not exist\n",
progname, socketgroup);
exit(EXIT_FAILURE);
}
if (stat(socketfile, &buf) < 0) {
fprintf(stderr, "%s: can't stat %s\n",
progname, socketfile);
exit(EXIT_FAILURE);
}
if (chown(socketfile, buf.st_uid, gr->gr_gid) < 0) {
fprintf(stderr, "%s: chown(): %s\n",
progname, strerror(errno));
exit(EXIT_FAILURE);
}
}
}
/* if we're running in foreground, we don't daemonize */
if (!foreground) {
if (daemonize() < 0)
exit(EXIT_FAILURE);
}
/* open the log */
if (open_log() < 0) {
exit(EXIT_FAILURE);
}
acpid_log(LOG_INFO, "starting up\n");
/* trap key signals */
signal(SIGHUP, reload_conf);
signal(SIGINT, clean_exit);
signal(SIGQUIT, clean_exit);
signal(SIGTERM, clean_exit);
signal(SIGPIPE, SIG_IGN);
/* read in our configuration */
if (acpid_read_conf(confdir)) {
exit(EXIT_FAILURE);
}
/* create our pidfile */
if (create_pidfile() < 0) {
exit(EXIT_FAILURE);
}
/* main loop */
acpid_log(LOG_INFO, "waiting for events: event logging is %s\n",
logevents ? "on" : "off");
while (1) {
struct pollfd ar[2];
int r;
int fds = 0;
/* poll for the socket and the event file */
ar[0].fd = event_fd; ar[0].events = POLLIN; fds++;
if (!nosocket) {
ar[1].fd = sock_fd; ar[1].events = POLLIN; fds++;
}
r = poll(ar, fds, -1);
if (r < 0 && errno == EINTR) {
continue;
} else if (r < 0) {
acpid_log(LOG_ERR, "poll(): %s\n", strerror(errno));
continue;
}
/* house keeping */
acpid_close_dead_clients();
/* was it an event? */
if (ar[0].revents) {
char *event;
struct stat trash;
int fexists;
/* check for existence of a lockfile */
fexists = (stat(lockfile, &trash) == 0);
/* this shouldn't happen */
if (!ar[0].revents & POLLIN) {
acpid_log(LOG_DEBUG,
"odd, poll set flags 0x%x\n",
ar[0].revents);
continue;
}
/* read an event */
event = read_line(event_fd);
/* if we're locked, don't process the event */
if (fexists) {
if (logevents) {
acpid_log(LOG_INFO,
"lockfile present, not processing "
"event \"%s\"\n", event);
}
continue;
}
/* handle the event */
if (event) {
if (logevents) {
acpid_log(LOG_INFO,
"received event \"%s\"\n", event);
}
acpid_handle_event(event);
if (logevents) {
acpid_log(LOG_INFO,
"completed event \"%s\"\n", event);
}
} else if (errno == EPIPE) {
acpid_log(LOG_WARNING,
"events file connection closed\n");
break;
} else {
static int nerrs;
if (++nerrs >= ACPID_MAX_ERRS) {
acpid_log(LOG_ERR,
"too many errors reading "
"events file - aborting\n");
break;
}
}
}
/* was it a new connection? */
if (!nosocket && ar[1].revents) {
int cli_fd;
struct ucred creds;
char buf[32];
static int accept_errors;
/* this shouldn't happen */
if (!ar[1].revents & POLLIN) {
acpid_log(LOG_DEBUG,
"odd, poll set flags 0x%x\n",
ar[1].revents);
continue;
}
/* accept and add to our lists */
cli_fd = ud_accept(sock_fd, &creds);
if (cli_fd < 0) {
acpid_log(LOG_ERR, "can't accept client: %s\n",
strerror(errno));
accept_errors++;
if (accept_errors >= 5) {
acpid_log(LOG_ERR, "giving up\n");
clean_exit_with_status(EXIT_FAILURE);
}
continue;
}
accept_errors = 0;
if (creds.uid != 0 && non_root_clients >= clientmax) {
close(cli_fd);
acpid_log(LOG_ERR,
"too many non-root clients\n");
continue;
}
if (creds.uid != 0) {
non_root_clients++;
}
fcntl(cli_fd, F_SETFD, FD_CLOEXEC);
snprintf(buf, sizeof(buf)-1, "%d[%d:%d]",
creds.pid, creds.uid, creds.gid);
acpid_add_client(cli_fd, buf);
}
}
clean_exit_with_status(EXIT_SUCCESS);
return 0;
}
/* called when an inotify event is received */
static void process_inotify(int fd)
{
int bytes;
/* union to avoid strict-aliasing problems */
union {
char buffer[256]; /* a tad large */
struct inotify_event event;
} eventbuf;
bytes = read(fd, &eventbuf.buffer, sizeof(eventbuf.buffer));
acpid_log(LOG_DEBUG, "inotify read bytes: %d", bytes);
/* eof is not expected */
if (bytes == 0) {
acpid_log(LOG_WARNING, "inotify fd eof encountered");
return;
}
else if (bytes < 0) {
/* EINVAL means buffer wasn't big enough. See inotify(7). */
acpid_log(LOG_ERR, "inotify read error: %s (%d)",
strerror(errno), errno);
acpid_log(LOG_ERR, "disconnecting from inotify");
delete_connection(fd);
return;
}
acpid_log(LOG_DEBUG, "inotify name len: %d", eventbuf.event.len);
const int dnsize = 256;
char devname[dnsize];
/* if a name is included */
if (eventbuf.event.len > 0) {
/* devname = ACPID_INPUTLAYERDIR + "/" + pevent -> name */
strcpy(devname, ACPID_INPUTLAYERDIR);
strcat(devname, "/");
strncat(devname, eventbuf.event.name, dnsize - strlen(devname) - 1);
}
/* if this is a create */
if (eventbuf.event.mask & IN_CREATE) {
acpid_log(LOG_DEBUG, "inotify about to open: %s", devname);
open_inputfile(devname);
}
/* if this is a delete */
if (eventbuf.event.mask & IN_DELETE) {
/* struct connection *c; */
acpid_log(LOG_DEBUG, "inotify received a delete for: %s", devname);
#if 0
/* Switching back to the original ENODEV detection scheme. See
process_input() in input_layer.c. */
/* keeping this for future reference */
/* search for the event file in the connection list */
/* ??? Or should we just have a delete_connection_name()? */
c = find_connection_name(devname);
/* close that connection if found */
if (c)
delete_connection(c->fd);
#endif
}
}