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Diffstat (limited to 'passt.c')
-rw-r--r--passt.c113
1 files changed, 1 insertions, 112 deletions
diff --git a/passt.c b/passt.c
index bbf53d9..2a8314c 100644
--- a/passt.c
+++ b/passt.c
@@ -19,51 +19,25 @@
* created in a separate network namespace).
*/
-#include <sched.h>
-#include <stdio.h>
#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <dirent.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/resource.h>
-#include <sys/uio.h>
-#include <sys/syscall.h>
-#include <sys/wait.h>
-#include <sys/mount.h>
-#include <netinet/ip.h>
-#include <net/ethernet.h>
-#include <libgen.h>
#include <stdlib.h>
#include <unistd.h>
-#include <net/if.h>
#include <netdb.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <syslog.h>
-#include <sys/stat.h>
#include <sys/prctl.h>
-#include <stddef.h>
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
#include <netinet/if_ether.h>
-#include <linux/seccomp.h>
-#include <linux/audit.h>
-#include <linux/filter.h>
-#include <linux/icmpv6.h>
-
#include "util.h"
-#include "seccomp.h"
#include "passt.h"
#include "dhcp.h"
#include "dhcpv6.h"
-#include "icmp.h"
-#include "tcp.h"
-#include "udp.h"
+#include "isolation.h"
#include "pcap.h"
#include "tap.h"
#include "conf.h"
@@ -167,91 +141,6 @@ void proto_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s,
}
/**
- * seccomp() - Set up seccomp filters depending on mode, won't return on failure
- * @c: Execution context
- */
-static void seccomp(const struct ctx *c)
-{
- struct sock_fprog prog;
-
- if (c->mode == MODE_PASST) {
- prog.len = (unsigned short)ARRAY_SIZE(filter_passt);
- prog.filter = filter_passt;
- } else {
- prog.len = (unsigned short)ARRAY_SIZE(filter_pasta);
- prog.filter = filter_pasta;
- }
-
- if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) ||
- prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &prog)) {
- perror("prctl");
- exit(EXIT_FAILURE);
- }
-}
-
-/**
- * sandbox() - Unshare IPC, mount, PID, UTS, and user namespaces, "unmount" root
- *
- * Return: negative error code on failure, zero on success
- */
-static int sandbox(struct ctx *c)
-{
- int flags = CLONE_NEWIPC | CLONE_NEWNS | CLONE_NEWUTS;
-
- if (!c->netns_only) {
- if (c->pasta_userns_fd == -1)
- flags |= CLONE_NEWUSER;
- else
- setns(c->pasta_userns_fd, CLONE_NEWUSER);
- }
-
- c->pasta_userns_fd = -1;
-
- /* If we run in foreground, we have no chance to actually move to a new
- * PID namespace. For passt, use CLONE_NEWPID anyway, in case somebody
- * ever gets around seccomp profiles -- there's no harm in passing it.
- */
- if (!c->foreground || c->mode == MODE_PASST)
- flags |= CLONE_NEWPID;
-
- if (unshare(flags)) {
- perror("unshare");
- return -errno;
- }
-
- if (mount("", "/", "", MS_UNBINDABLE | MS_REC, NULL)) {
- perror("mount /");
- return -errno;
- }
-
- if (mount("", TMPDIR, "tmpfs",
- MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RDONLY,
- "nr_inodes=2,nr_blocks=0")) {
- perror("mount tmpfs");
- return -errno;
- }
-
- if (chdir(TMPDIR)) {
- perror("chdir");
- return -errno;
- }
-
- if (syscall(SYS_pivot_root, ".", ".")) {
- perror("pivot_root");
- return -errno;
- }
-
- if (umount2(".", MNT_DETACH | UMOUNT_NOFOLLOW)) {
- perror("umount2");
- return -errno;
- }
-
- drop_caps(); /* Relative to the new user namespace this time. */
-
- return 0;
-}
-
-/**
* exit_handler() - Signal handler for SIGQUIT and SIGTERM
* @unused: Unused, handler deals with SIGQUIT and SIGTERM only
*