(w) = p; \
} while (0)
-#define IC_IDNAME 1
-#define IC_NAMEID 2
+#define IC_IDNAME 0
+#define IC_NAMEID 1
struct idmap_client {
int ic_fd;
int ic_dirfd;
static void dirscancb(int, short, void *);
static void clntscancb(int, short, void *);
+static void svrreopen(int, short, void *);
static int nfsopen(struct idmap_client *);
static void nfscb(int, short, void *);
static void nfsdcb(int, short, void *);
static int nfsdopen(char *);
static int nfsdopenone(struct idmap_client *, short, char *);
+static void nfsdreopen(void);
size_t strlcat(char *, const char *, size_t);
size_t strlcpy(char *, const char *, size_t);
ssize_t atomicio(ssize_t (*)(), int, void *, size_t);
-int daemon(int, int);
+void mydaemon(int, int);
+void release_parent();
static int verbose = 0;
-static char domain[512];
static char pipefsdir[PATH_MAX];
static char *nobodyuser, *nobodygroup;
static uid_t nobodyuid;
/* Used by cfg.c */
char *conf_path;
+static int
+flush_nfsd_cache(char *path, time_t now)
+{
+ int fd;
+ char stime[20];
+
+ sprintf(stime, "%ld\n", now);
+ fd = open(path, O_RDWR);
+ if (fd == -1)
+ return -1;
+ write(fd, stime, strlen(stime));
+ close(fd);
+ return 0;
+}
+
+static int
+flush_nfsd_idmap_cache(void)
+{
+ time_t now = time(NULL);
+ int ret;
+
+ ret = flush_nfsd_cache("/proc/net/rpc/nfs4.idtoname/flush", now);
+ if (ret)
+ return ret;
+ ret = flush_nfsd_cache("/proc/net/rpc/nfs4.nametoid/flush", now);
+ return ret;
+}
+
int
main(int argc, char **argv)
{
int fd = 0, opt, fg = 0, nfsdret = -1;
struct idmap_clientq icq;
- struct event rootdirev, clntdirev;
+ struct event rootdirev, clntdirev, svrdirev;
struct event initialize;
struct passwd *pw;
struct group *gr;
struct stat sb;
char *xpipefsdir = NULL;
- char *xdomain = NULL;
int serverstart = 1, clientstart = 1;
+ int ret;
conf_path = _PATH_IDMAPDCONF;
nobodyuser = NFS4NOBODY_USER;
conf_init();
verbose = conf_get_num("General", "Verbosity", 0);
CONF_SAVE(xpipefsdir, conf_get_str("General", "Pipefs-Directory"));
- CONF_SAVE(xdomain, conf_get_str("General", "Domain"));
if (xpipefsdir != NULL)
strlcpy(pipefsdir, xpipefsdir, sizeof(pipefsdir));
- if (xdomain != NULL)
- strlcpy(domain, xdomain, sizeof(domain));
CONF_SAVE(nobodyuser, conf_get_str("Mapping", "Nobody-User"));
CONF_SAVE(nobodygroup, conf_get_str("Mapping", "Nobody-Group"));
+ nfs4_init_name_mapping(conf_path);
}
while ((opt = getopt(argc, argv, GETOPTSTR)) != -1)
strncat(pipefsdir, "/nfs", sizeof(pipefsdir));
- if (domain[0] == '\0') {
- struct hostent *he;
- char hname[64], *c;
-
- if (gethostname(hname, sizeof(hname)) == -1)
- errx(1, "Error getting hostname");
-
- if ((he = gethostbyname(hname)) == NULL)
- errx(1, "Error resolving hostname: %s", hname);
-
- if ((c = strchr(he->h_name, '.')) == NULL || *++c == '\0')
- errx(1, "Error resolving domain, "
- "please use the -d switch");
-
- strlcpy(domain, c, sizeof(domain));
- }
-
if ((pw = getpwnam(nobodyuser)) == NULL)
errx(1, "Could not find user \"%s\"", nobodyuser);
nobodyuid = pw->pw_uid;
errx(1, "Could not find group \"%s\"", nobodygroup);
nobodygid = gr->gr_gid;
- if (strlen(domain) == 0)
- errx(1, "Invalid domain; please specify with -d switch");
-
- if (verbose > 2)
- warnx("Using domain \"%s\"", domain);
-
if (!fg)
- daemon(0, 0);
+ mydaemon(0, 0);
event_init();
- if (serverstart)
+ if (serverstart) {
nfsdret = nfsdopen(NFSD_DIR);
+ if (nfsdret == 0) {
+ ret = flush_nfsd_idmap_cache();
+ if (ret)
+ errx(1, "Failed to flush nfsd idmap cache\n");
+ }
+ }
if (clientstart) {
struct timeval now = {
signal_add(&rootdirev, NULL);
signal_set(&clntdirev, SIGUSR2, clntscancb, &icq);
signal_add(&clntdirev, NULL);
+ signal_set(&svrdirev, SIGHUP, svrreopen, NULL);
+ signal_add(&svrdirev, NULL);
/* Fetch current state */
/* (Delay till start of event_dispatch to avoid possibly losing
if (nfsdret != 0 && fd == 0)
errx(1, "Neither NFS client nor NFSd found");
+ release_parent();
+
if (event_dispatch() < 0)
errx(1, "event_dispatch: returns errno %d (%s)", errno, strerror(errno));
/* NOTREACHED */
return;
}
+static void
+svrreopen(int fd, short which, void *data)
+{
+ nfsdreopen();
+}
+
static void
clntscancb(int fd, short which, void *data)
{
event_add(&ic->ic_event, NULL);
}
+static void
+nfsdreopen_one(struct idmap_client *ic)
+{
+ int fd;
+
+ if (verbose > 0)
+ warnx("ReOpening %s", ic->ic_path);
+ if ((fd = open(ic->ic_path, O_RDWR, 0)) != -1) {
+ if (ic->ic_fd != -1)
+ close(ic->ic_fd);
+ ic->ic_event.ev_fd = ic->ic_fd = fd;
+ event_set(&ic->ic_event, ic->ic_fd, EV_READ, nfsdcb, ic);
+ event_add(&ic->ic_event, NULL);
+ } else {
+ warnx("nfsdreopen: Opening '%s' failed: errno %d (%s)",
+ ic->ic_path, errno, strerror(errno));
+ }
+}
+
+/*
+ * Note: nfsdreopen assumes nfsdopen has already been called
+ */
+static void
+nfsdreopen()
+{
+ nfsdreopen_one(&nfsd_ic[IC_NAMEID]);
+ nfsdreopen_one(&nfsd_ic[IC_IDNAME]);
+ return;
+}
+
static int
nfsdopen(char *path)
{
- return ((nfsdopenone(&nfsd_ic[0], IC_NAMEID, path) == 0 &&
- nfsdopenone(&nfsd_ic[1], IC_IDNAME, path) == 0) ? 0 : -1);
+ return ((nfsdopenone(&nfsd_ic[IC_NAMEID], IC_NAMEID, path) == 0 &&
+ nfsdopenone(&nfsd_ic[IC_IDNAME], IC_IDNAME, path) == 0) ? 0 : -1);
}
static int
ic->ic_which = which;
ic->ic_id = "Server";
- strlcpy(ic->ic_clid, domain, sizeof(ic->ic_clid));
+ strlcpy(ic->ic_clid, "Server", strlen("Server"));
if (verbose > 0)
warnx("Opened %s", ic->ic_path);
static void
idtonameres(struct idmap_msg *im)
{
+ char domain[NFS4_MAX_DOMAIN_LEN];
int ret = 0;
+ ret = nfs4_get_default_domain(NULL, domain, sizeof(domain));
switch (im->im_type) {
case IDMAP_TYPE_USER:
ret = nfs4_uid_to_name(im->im_id, domain, im->im_name,
sizeof(im->im_name));
break;
}
- /* XXX Hack? would rather return failure instead of writing nobody
- * as above, but kernel seems not to deal well with that as of
- * 2.6.8-rc3. */
+ /* XXX Hack? */
im->im_status = IDMAP_STATUS_SUCCESS;
}
{
int ret = 0;
+ /* XXX: nobody fallbacks shouldn't always happen:
+ * server id -> name should be OK
+ * client name -> id should be OK
+ * but not otherwise */
+ /* XXX: move nobody stuff to library calls
+ * (nfs4_get_nobody_user(domain), nfs4_get_nobody_group(domain)) */
+ /* XXX: should make this call higher up in the call chain (so we'd
+ * have a chance on looking up server/whatever. */
switch (im->im_type) {
case IDMAP_TYPE_USER:
ret = nfs4_name_to_uid(im->im_name, &im->im_id);
im->im_id = nobodygid;
break;
}
- /* XXX Hack? would rather return failure instead of writing nobody
- * as above, but kernel seems not to deal well with that as of
- * 2.6.8-rc3. */
+ /* XXX? */
im->im_status = IDMAP_STATUS_SUCCESS;
}
return (0);
}
+/*
+ * mydaemon creates a pipe between the partent and child
+ * process. The parent process will wait until the
+ * child dies or writes a '1' on the pipe signaling
+ * that it started successfully.
+ */
+int pipefds[2] = { -1, -1};
+
+void
+mydaemon(int nochdir, int noclose)
+{
+ int pid, status, tempfd;
+
+ if (pipe(pipefds) < 0)
+ err(1, "mydaemon: pipe() failed: errno %d (%s)\n", errno, strerror(errno));
+
+ if ((pid = fork ()) < 0)
+ err(1, "mydaemon: fork() failed: errno %d (%s)\n", errno, strerror(errno));
+
+ if (pid != 0) {
+ /*
+ * Parent. Wait for status from child.
+ */
+ close(pipefds[1]);
+ if (read(pipefds[0], &status, 1) != 1)
+ exit(1);
+ exit (0);
+ }
+ /* Child. */
+ close(pipefds[0]);
+ setsid ();
+ if (nochdir == 0) {
+ if (chdir ("/") == -1)
+ err(1, "mydaemon: chdir() failed: errno %d (%s)\n", errno, strerror(errno));
+ }
+
+ while (pipefds[1] <= 2) {
+ pipefds[1] = dup(pipefds[1]);
+ if (pipefds[1] < 0)
+ err(1, "mydaemon: dup() failed: errno %d (%s)\n", errno, strerror(errno));
+ }
+
+ if (noclose == 0) {
+ tempfd = open("/dev/null", O_RDWR);
+ dup2(tempfd, 0);
+ dup2(tempfd, 1);
+ dup2(tempfd, 2);
+ closeall(3);
+ }
+
+ return;
+}
+void
+release_parent()
+{
+ int status;
+
+ if (pipefds[1] > 0) {
+ write(pipefds[1], &status, 1);
+ close(pipefds[1]);
+ pipefds[1] = -1;
+ }
+}
projects / nfs-utils.git / blobdiff