1 files changed, 173 insertions, 0 deletions
diff --git a/utils/mountd/rmtab.c b/utils/mountd/rmtab.c
new file mode 100644
index 0000000..289a42e
--- /dev/null
+++ b/utils/mountd/rmtab.c
@@ -0,0 +1,173 @@
+/*
+ * utils/mountd/rmtab.c
+ *
+ * Manage the rmtab file for mountd.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include "config.h"
+
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include "xmalloc.h"
+#include "misc.h"
+#include "exportfs.h"
+#include "xio.h"
+#include "mountd.h"
+
+void
+mountlist_add(nfs_export *exp, const char *path)
+{
+	struct rmtabent	xe;
+	struct rmtabent	*rep;
+	int		lockid;
+
+	if ((lockid = xflock(_PATH_RMTAB, "a")) < 0)
+		return;
+	setrmtabent("r");
+	while ((rep = getrmtabent(1)) != NULL) {
+		if (strcmp (rep->r_client,
+			    exp->m_client->m_hostname) == 0
+		    && strcmp(rep->r_path, path) == 0) {
+			endrmtabent();
+			xfunlock(lockid);
+			return;
+		}
+	}
+	endrmtabent();
+	strncpy(xe.r_client, exp->m_client->m_hostname,
+		sizeof (xe.r_client) - 1);
+	xe.r_client [sizeof (xe.r_client) - 1] = '\0';
+	strncpy(xe.r_path, path, sizeof (xe.r_path) - 1);
+	xe.r_path [sizeof (xe.r_path) - 1] = '\0';
+	if (setrmtabent("a")) {
+		putrmtabent(&xe);
+		endrmtabent();
+	}
+	xfunlock(lockid);
+}
+
+void
+mountlist_del(nfs_export *exp, const char *path)
+{
+	struct rmtabent	*rep;
+	FILE		*fp;
+	char		*hname = exp->m_client->m_hostname;
+	int		lockid;
+
+	if ((lockid = xflock(_PATH_RMTAB, "w")) < 0)
+		return;
+	if (!setrmtabent("r")) {
+		xfunlock(lockid);
+		return;
+	}
+	if (!(fp = fsetrmtabent(_PATH_RMTABTMP, "w"))) {
+		endrmtabent();
+		xfunlock(lockid);
+		return;
+	}
+	while ((rep = getrmtabent(1)) != NULL) {
+		if (strcmp (rep->r_client, hname)
+		    || strcmp(rep->r_path, path))
+			fputrmtabent(fp, rep);
+	}
+	if (rename(_PATH_RMTABTMP, _PATH_RMTAB) < 0) {
+		xlog(L_ERROR, "couldn't rename %s to %s",
+				_PATH_RMTABTMP, _PATH_RMTAB);
+	}
+	endrmtabent();	/* close & unlink */
+	fendrmtabent(fp);
+	xfunlock(lockid);
+}
+
+void
+mountlist_del_all(struct sockaddr_in *sin)
+{
+	struct in_addr	addr = sin->sin_addr;
+	struct hostent	*hp;
+	struct rmtabent	*rep;
+	nfs_export	*exp;
+	FILE		*fp;
+	int		lockid;
+
+	if ((lockid = xflock(_PATH_RMTAB, "w")) < 0)
+		return;
+	if (!(hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET))) {
+		xlog(L_ERROR, "can't get hostname of %s", inet_ntoa(addr));
+		xfunlock(lockid);
+		return;
+	}
+	else
+		hp = hostent_dup (hp);
+
+	if (!setrmtabent("r")) {
+		xfunlock(lockid);
+		free (hp);
+		return;
+	}
+	if (!(fp = fsetrmtabent(_PATH_RMTABTMP, "w"))) {
+		endrmtabent();
+		xfunlock(lockid);
+		free (hp);
+		return;
+	}
+	while ((rep = getrmtabent(1)) != NULL) {
+		if (strcmp(rep->r_client, hp->h_name) == 0 &&
+		    (exp = auth_authenticate("umountall", sin, rep->r_path))) {
+			export_reset(exp);
+			continue;
+		}
+		fputrmtabent(fp, rep);
+	}
+	if (rename(_PATH_RMTABTMP, _PATH_RMTAB) < 0) {
+		xlog(L_ERROR, "couldn't rename %s to %s",
+				_PATH_RMTABTMP, _PATH_RMTAB);
+	}
+	endrmtabent();	/* close & unlink */
+	fendrmtabent(fp);
+	xfunlock(lockid);
+	free (hp);
+}
+
+mountlist
+mountlist_list(void)
+{
+	static mountlist	mlist = NULL;
+	static time_t		last_mtime = 0;
+	mountlist		m;
+	struct rmtabent		*rep;
+	struct stat		stb;
+	int			lockid;
+
+	if ((lockid = xflock(_PATH_RMTAB, "r")) < 0)
+		return NULL;
+	if (stat(_PATH_RMTAB, &stb) < 0) {
+		xlog(L_ERROR, "can't stat %s", _PATH_RMTAB);
+		return NULL;
+	}
+	if (stb.st_mtime != last_mtime) {
+		while (mlist) {
+			mlist = (m = mlist)->ml_next;
+			xfree(m->ml_hostname);
+			xfree(m->ml_directory);
+			xfree(m);
+		}
+		last_mtime = stb.st_mtime;
+
+		setrmtabent("r");
+		while ((rep = getrmtabent(1)) != NULL) {
+			m = (mountlist) xmalloc(sizeof(*m));
+			m->ml_hostname = xstrdup(rep->r_client);
+			m->ml_directory = xstrdup(rep->r_path);
+			m->ml_next = mlist;
+			mlist = m;
+		}
+		endrmtabent();
+	}
+	xfunlock(lockid);
+
+	return mlist;
+}