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authorDamien Miller <djm@mindrot.org>2006-08-31 03:24:41 +1000
committerDamien Miller <djm@mindrot.org>2006-08-31 03:24:41 +1000
commit1b06dc30ad4692ec76c476d130ba7366f7ebfef2 (patch)
tree85a3f1df0e15d7da1939df14a43a35dc4380a001 /openbsd-compat/port-solaris.c
parent26d4e19caa3013f57dc3c1462847eceaac6a1d7d (diff)
- (djm) [CREDITS LICENCE Makefile.in auth.c configure.ac includes.h ]
[platform.c platform.h sshd.c openbsd-compat/Makefile.in] [openbsd-compat/openbsd-compat.h openbsd-compat/port-solaris.c] [openbsd-compat/port-solaris.h] Add support for Solaris process contracts, enabled with --use-solaris-contracts. Patch from Chad Mynhier, tweaked by dtucker@ and myself; ok dtucker@
Diffstat (limited to 'openbsd-compat/port-solaris.c')
-rw-r--r--openbsd-compat/port-solaris.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/openbsd-compat/port-solaris.c b/openbsd-compat/port-solaris.c
new file mode 100644
index 00000000..f31f0c6e
--- /dev/null
+++ b/openbsd-compat/port-solaris.c
@@ -0,0 +1,189 @@
+/* $Id: port-solaris.c,v 1.1 2006/08/30 17:24:42 djm Exp $ */
+
+/*
+ * Copyright (c) 2006 Chad Mynhier.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+#include "includes.h"
+
+#ifdef USE_SOLARIS_PROCESS_CONTRACTS
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+
+#include <errno.h>
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+#include <string.h>
+#include <unistd.h>
+
+#include <libcontract.h>
+#include <sys/contract/process.h>
+#include <sys/ctfs.h>
+
+#include "log.h"
+
+#define CT_TEMPLATE CTFS_ROOT "/process/template"
+#define CT_LATEST CTFS_ROOT "/process/latest"
+
+static int tmpl_fd = -1;
+
+/* Lookup the latest process contract */
+static ctid_t
+get_active_process_contract_id(void)
+{
+ int stat_fd;
+ ctid_t ctid = -1;
+ ct_stathdl_t stathdl;
+
+ if ((stat_fd = open64(CT_LATEST, O_RDONLY)) == -1) {
+ error("%s: Error opening 'latest' process "
+ "contract: %s", __func__, strerror(errno));
+ return -1;
+ }
+ if (ct_status_read(stat_fd, CTD_COMMON, &stathdl) != 0) {
+ error("%s: Error reading process contract "
+ "status: %s", __func__, strerror(errno));
+ goto out;
+ }
+ if ((ctid = ct_status_get_id(stathdl)) < 0) {
+ error("%s: Error getting process contract id: %s",
+ __func__, strerror(errno));
+ goto out;
+ }
+
+ ct_status_free(stathdl);
+ out:
+ close(stat_fd);
+ return ctid;
+}
+
+void
+solaris_contract_pre_fork(void)
+{
+ if ((tmpl_fd = open64(CT_TEMPLATE, O_RDWR)) == -1) {
+ error("%s: open %s: %s", __func__,
+ CT_TEMPLATE, strerror(errno));
+ return;
+ }
+
+ debug2("%s: setting up process contract template on fd %d",
+ __func__, tmpl_fd);
+
+ /* We have to set certain attributes before activating the template */
+ if (ct_pr_tmpl_set_fatal(tmpl_fd,
+ CT_PR_EV_HWERR|CT_PR_EV_SIGNAL|CT_PR_EV_CORE) != 0) {
+ error("%s: Error setting process contract template "
+ "fatal events: %s", __func__, strerror(errno));
+ goto fail;
+ }
+ if (ct_tmpl_set_critical(tmpl_fd, CT_PR_EV_HWERR) != 0) {
+ error("%s: Error setting process contract template "
+ "critical events: %s", __func__, strerror(errno));
+ goto fail;
+ }
+
+ /* Now make this the active template for this process. */
+ if (ct_tmpl_activate(tmpl_fd) != 0) {
+ error("%s: Error activating process contract "
+ "template: %s", __func__, strerror(errno));
+ goto fail;
+ }
+ return;
+
+ fail:
+ if (tmpl_fd != -1) {
+ close(tmpl_fd);
+ tmpl_fd = -1;
+ }
+}
+
+void
+solaris_contract_post_fork_child()
+{
+ debug2("%s: clearing process contract template on fd %d",
+ __func__, tmpl_fd);
+
+ /* Clear the active template. */
+ if (ct_tmpl_clear(tmpl_fd) != 0)
+ error("%s: Error clearing active process contract "
+ "template: %s", __func__, strerror(errno));
+
+ close(tmpl_fd);
+ tmpl_fd = -1;
+}
+
+void
+solaris_contract_post_fork_parent(pid_t pid)
+{
+ ctid_t ctid;
+ char ctl_path[256];
+ int r, ctl_fd = -1, stat_fd = -1;
+
+ debug2("%s: clearing template (fd %d)", __func__, tmpl_fd);
+
+ if (tmpl_fd == -1)
+ return;
+
+ /* First clear the active template. */
+ if ((r = ct_tmpl_clear(tmpl_fd)) != 0)
+ error("%s: Error clearing active process contract "
+ "template: %s", __func__, strerror(errno));
+
+ close(tmpl_fd);
+ tmpl_fd = -1;
+
+ /*
+ * If either the fork didn't succeed (pid < 0), or clearing
+ * th active contract failed (r != 0), then we have nothing
+ * more do.
+ */
+ if (r != 0 || pid <= 0)
+ return;
+
+ /* Now lookup and abandon the contract we've created. */
+ ctid = get_active_process_contract_id();
+
+ debug2("%s: abandoning contract id %ld", __func__, ctid);
+
+ snprintf(ctl_path, sizeof(ctl_path),
+ CTFS_ROOT "/process/%ld/ctl", ctid);
+ if ((ctl_fd = open64(ctl_path, O_WRONLY)) < 0) {
+ error("%s: Error opening process contract "
+ "ctl file: %s", __func__, strerror(errno));
+ goto fail;
+ }
+ if (ct_ctl_abandon(ctl_fd) < 0) {
+ error("%s: Error abandoning process contract: %s",
+ __func__, strerror(errno));
+ goto fail;
+ }
+ close(ctl_fd);
+ return;
+
+ fail:
+ if (tmpl_fd != -1) {
+ close(tmpl_fd);
+ tmpl_fd = -1;
+ }
+ if (stat_fd != -1)
+ close(stat_fd);
+ if (ctl_fd != -1)
+ close(ctl_fd);
+}
+#endif