--- /dev/null
+EXTRA_CFLAGS := $(extra_cflags)
+
+obj-m := swap_ks_features.o
+swap_ks_features-y := ks_features.o
--- /dev/null
+board_opt = -DBOARD_@BOARD@
+target_kernel_src = @KERNEL@
+target_arch = @ARCH@
+module_dir = $(realpath $(top_srcdir)/src/modules/ks_features)
+module_name = swap_ks_features
+cross_compiler = $(subst gcc,,$(CC))
+
+#inlude_opt = -I$(realpath $(top_srcdir)/src/modules/kprobe) \
+# -I$(realpath $(top_srcdir)/src/modules/kprobe/arch)
+extra_cflags = "$(inlude_opt) $(board_opt)"
+
+all-local:
+ $(MAKE) CROSS_COMPILE=$(cross_compiler) ARCH=$(target_arch) extra_cflags=$(extra_cflags) \
+ $(AM_MAKEFLAGS) -C $(target_kernel_src) M=$(module_dir) modules
+
+ echo "generate data for version patching <$(OBJDUMP)><$(READELF)>"
+ PATH=$(PATH) $(top_srcdir)/src/modules/driver/patchko.sh -g $(module_dir)/$(module_name).ko $(OBJDUMP) $(READELF)
+
+clean-local:
+ $(MAKE) CROSS_COMPILE=$(cross_compiler) ARCH=$(target_arch) $(AM_MAKEFLAGS) -C $(target_kernel_src) M=$(module_dir) clean
+
+install-exec-local:
+ install -m 644 $(module_dir)/$(module_name).ko $(prefix)
+ install -m 644 $(module_dir)/$(module_name).ko.addr $(prefix)
+ install -m 755 $(module_dir)/$(module_name).sh $(prefix)
--- /dev/null
+#ifndef _FEATURES_DATA_H
+#define _FEATURES_DATA_H
+
+#include <linux/types.h>
+
+#define SYSCALL_LIST \
+ X(sys_accept4), \
+ X(sys_accept), \
+ X(sys_access), \
+ X(sys_acct), \
+ X(sys_bind), \
+ X(sys_chdir), \
+ X(sys_chmod), \
+ X(sys_chown16), \
+ X(sys_chown), \
+ X(sys_chroot), \
+ X(sys_clone), \
+ X(sys_connect), \
+ X(sys_creat), \
+ X(sys_dup3), \
+ X(sys_epoll_create1), \
+ X(sys_epoll_ctl), \
+ X(sys_epoll_pwait), \
+ X(sys_epoll_wait), \
+ X(sys_eventfd2), \
+ X(sys_eventfd), \
+ X(sys_execve), \
+ X(sys_exit_group), \
+ X(sys_exit), \
+ X(sys_faccessat), \
+ X(sys_fadvise64_64), \
+ X(sys_fallocate), \
+ X(sys_fanotify_init), \
+ X(sys_fanotify_mark), \
+ X(sys_fchmodat), \
+ X(sys_fchownat), \
+ X(sys_fgetxattr), \
+ X(sys_flistxattr), \
+ X(sys_fork), \
+ X(sys_fremovexattr), \
+ X(sys_fstat64), \
+ X(sys_ftruncate64), \
+ X(sys_futimesat), \
+ X(sys_getcwd), \
+ X(sys_getpeername), \
+ X(sys_getsockname), \
+ X(sys_getsockopt), \
+ X(sys_getxattr), \
+ X(sys_inotify_add_watch), \
+ X(sys_inotify_init1), \
+ X(sys_inotify_init), \
+ X(sys_inotify_rm_watch), \
+ X(sys_ipc), \
+ X(sys_kill), \
+ X(sys_linkat), \
+ X(sys_link), \
+ X(sys_listen), \
+ X(sys_listxattr), \
+ X(sys_lstat64), \
+ X(sys_lstat), \
+ X(sys_mkdirat), \
+ X(sys_mkdir), \
+ X(sys_mknodat), \
+ X(sys_mknod), \
+ X(sys_mmap_pgoff), \
+ X(sys_mount), \
+ X(sys_msgctl), \
+ X(sys_msgget), \
+ X(sys_msgrcv), \
+ X(sys_msgsnd), \
+ X(sys_name_to_handle_at), \
+ X(sys_newfstatat), \
+ X(sys_old_mmap), \
+ X(sys_openat), \
+ X(sys_open_by_handle_at), \
+ X(sys_open), \
+ X(sys_pause), \
+ X(sys_pipe2), \
+ X(sys_ppoll), \
+ X(sys_pread64), \
+ X(sys_preadv), \
+ X(sys_pselect6), \
+ X(sys_pwrite64), \
+ X(sys_pwritev), \
+ X(sys_readlinkat), \
+ X(sys_readlink), \
+ X(sys_recvfrom), \
+ X(sys_recvmmsg), \
+ X(sys_recvmsg), \
+ X(sys_recv), \
+ X(sys_removexattr), \
+ X(sys_renameat), \
+ X(sys_rename), \
+ X(sys_rmdir), \
+ X(sys_rt_sigaction), \
+ X(sys_rt_sigprocmask), \
+ X(sys_rt_sigsuspend), \
+ X(sys_rt_sigtimedwait), \
+ X(sys_rt_tgsigqueueinfo), \
+ X(sys_semctl), \
+ X(sys_semget), \
+ X(sys_semop), \
+ X(sys_semtimedop), \
+ X(sys_sendfile64), \
+ X(sys_sendfile), \
+ X(sys_sendmmsg), \
+ X(sys_sendmsg), \
+ X(sys_send), \
+ X(sys_sendto), \
+ X(sys_setns), \
+ X(sys_setsockopt), \
+ X(sys_setxattr), \
+ X(sys_shmat), \
+ X(sys_shmctl), \
+ X(sys_shmdt), \
+ X(sys_shmget), \
+ X(sys_shutdown), \
+ X(sys_sigaction), \
+ X(sys_sigaltstack), \
+ X(sys_signalfd4), \
+ X(sys_signalfd), \
+ X(sys_signal), \
+ X(sys_sigpending), \
+ X(sys_sigprocmask), \
+ X(sys_sigsuspend), \
+ X(sys_socketcall), \
+ X(sys_socketpair), \
+ X(sys_socket), \
+ X(sys_splice), \
+ X(sys_stat64), \
+ X(sys_statfs64), \
+ X(sys_statfs), \
+ X(sys_stat), \
+ X(sys_swapoff), \
+ X(sys_swapon), \
+ X(sys_symlinkat), \
+ X(sys_symlink), \
+ X(sys_syncfs), \
+ X(sys_tee), \
+ X(sys_tgkill), \
+ X(sys_timerfd_create), \
+ X(sys_timerfd_gettime), \
+ X(sys_timerfd_settime), \
+ X(sys_truncate64), \
+ X(sys_truncate), \
+ X(sys_umount), \
+ X(sys_unlinkat), \
+ X(sys_unlink), \
+ X(sys_unshare), \
+ X(sys_uselib), \
+ X(sys_utimensat), \
+ X(sys_utimes), \
+ X(sys_utime), \
+ X(sys_vfork), \
+ X(sys_vmsplice), \
+ X(sys_wait4), \
+ X(sys_waitid), \
+ X(sys_waitpid)
+
+#define X(x) #x
+static const char *const syscall_name[] = {
+ SYSCALL_LIST
+};
+#undef X
+
+enum {
+ syscall_name_cnt = sizeof(syscall_name) / sizeof(char *)
+};
+
+#define X(x) id_##x
+enum syscall_id {
+ SYSCALL_LIST
+};
+#undef X
+
+#undef SYSCALL_LIST
+
+static char sys_counter[syscall_name_cnt] = { 0 };
+
+static enum syscall_id id_file[] = {
+ id_sys_acct,
+ id_sys_mount,
+ id_sys_umount,
+ id_sys_truncate,
+ id_sys_stat,
+ id_sys_statfs,
+ id_sys_statfs64,
+ id_sys_lstat,
+ id_sys_stat64,
+ id_sys_fstat64,
+ id_sys_lstat64,
+ id_sys_truncate64,
+ id_sys_ftruncate64,
+ id_sys_setxattr,
+ id_sys_getxattr,
+ id_sys_listxattr,
+ id_sys_removexattr,
+ id_sys_chroot,
+ id_sys_mknod,
+ id_sys_link,
+ id_sys_symlink,
+ id_sys_unlink,
+ id_sys_rename,
+ id_sys_chmod,
+ id_sys_readlink,
+ id_sys_creat,
+ id_sys_open,
+ id_sys_access,
+ id_sys_chown,
+ id_sys_chown16,
+ id_sys_utime,
+ id_sys_utimes,
+ id_sys_pread64,
+ id_sys_pwrite64,
+ id_sys_preadv,
+ id_sys_pwritev,
+ id_sys_getcwd,
+ id_sys_mkdir,
+ id_sys_chdir,
+ id_sys_rmdir,
+ id_sys_swapon,
+ id_sys_swapoff,
+ id_sys_uselib,
+ id_sys_mknodat,
+ id_sys_mkdirat,
+ id_sys_unlinkat,
+ id_sys_symlinkat,
+ id_sys_linkat,
+ id_sys_renameat,
+ id_sys_futimesat,
+ id_sys_faccessat,
+ id_sys_fchmodat,
+ id_sys_fchownat,
+ id_sys_openat,
+ id_sys_newfstatat,
+ id_sys_readlinkat,
+ id_sys_utimensat,
+ id_sys_fanotify_mark,
+ id_sys_execve,
+ id_sys_name_to_handle_at,
+ id_sys_open_by_handle_at
+};
+
+static enum syscall_id id_irq[] = {
+ id_sys_msgget,
+ id_sys_msgsnd,
+ id_sys_msgrcv,
+ id_sys_msgctl,
+ id_sys_semget,
+ id_sys_semop,
+ id_sys_semctl,
+ id_sys_semtimedop,
+ id_sys_shmat,
+ id_sys_shmget,
+ id_sys_shmdt,
+ id_sys_shmctl,
+ id_sys_ipc
+};
+
+static enum syscall_id id_net[] = {
+ id_sys_shutdown,
+ id_sys_sendfile,
+ id_sys_sendfile64,
+ id_sys_setsockopt,
+ id_sys_getsockopt,
+ id_sys_bind,
+ id_sys_connect,
+ id_sys_accept,
+ id_sys_accept4,
+ id_sys_getsockname,
+ id_sys_getpeername,
+ id_sys_send,
+ id_sys_sendto,
+ id_sys_sendmsg,
+ id_sys_sendmmsg,
+ id_sys_recv,
+ id_sys_recvfrom,
+ id_sys_recvmsg,
+ id_sys_recvmmsg,
+ id_sys_socket,
+ id_sys_socketpair,
+ id_sys_socketcall,
+ id_sys_listen
+};
+
+static enum syscall_id id_process[] = {
+ id_sys_exit,
+ id_sys_exit_group,
+ id_sys_wait4,
+ id_sys_waitid,
+ id_sys_waitpid,
+ id_sys_rt_tgsigqueueinfo,
+ id_sys_unshare,
+ id_sys_fork,
+ id_sys_vfork,
+/* TODO: add support CONFIG_CLONE_BACKWARDS
+ * id_sys_clone,
+ * id_sys_clone,
+ */
+ id_sys_execve
+};
+
+static enum syscall_id id_signal[] = {
+ id_sys_sigpending,
+ id_sys_sigprocmask,
+ id_sys_sigaltstack,
+/* TODO: add support CONFIG_OLD_SIGSUSPEND and CONFIG_OLD_SIGSUSPEND3
+ * id_sys_sigsuspend,
+ * id_sys_sigsuspend,
+ */
+ id_sys_rt_sigsuspend,
+ id_sys_sigaction,
+ id_sys_rt_sigaction,
+ id_sys_rt_sigprocmask,
+ id_sys_rt_sigtimedwait,
+ id_sys_rt_tgsigqueueinfo,
+ id_sys_kill,
+ id_sys_tgkill,
+ id_sys_signal,
+ id_sys_pause,
+ id_sys_signalfd,
+ id_sys_signalfd4
+};
+
+static enum syscall_id id_desc[] = {
+ id_sys_fgetxattr,
+ id_sys_flistxattr,
+ id_sys_fremovexattr,
+ id_sys_fadvise64_64,
+ id_sys_pipe2,
+ id_sys_dup3,
+ id_sys_sendfile,
+ id_sys_sendfile64,
+ id_sys_preadv,
+ id_sys_pwritev,
+ id_sys_epoll_create1,
+ id_sys_epoll_ctl,
+ id_sys_epoll_wait,
+ id_sys_epoll_pwait,
+ id_sys_inotify_init,
+ id_sys_inotify_init1,
+ id_sys_inotify_add_watch,
+ id_sys_inotify_rm_watch,
+ id_sys_mknodat,
+ id_sys_mkdirat,
+ id_sys_unlinkat,
+ id_sys_symlinkat,
+ id_sys_linkat,
+ id_sys_renameat,
+ id_sys_futimesat,
+ id_sys_faccessat,
+ id_sys_fchmodat,
+ id_sys_fchownat,
+ id_sys_openat,
+ id_sys_newfstatat,
+ id_sys_readlinkat,
+ id_sys_utimensat,
+ id_sys_splice,
+ id_sys_vmsplice,
+ id_sys_tee,
+ id_sys_signalfd,
+ id_sys_signalfd4,
+ id_sys_timerfd_create,
+ id_sys_timerfd_settime,
+ id_sys_timerfd_gettime,
+ id_sys_eventfd,
+ id_sys_eventfd2,
+ id_sys_fallocate,
+ id_sys_pselect6,
+ id_sys_ppoll,
+ id_sys_fanotify_init,
+ id_sys_fanotify_mark,
+ id_sys_syncfs,
+ id_sys_mmap_pgoff,
+ id_sys_old_mmap,
+ id_sys_name_to_handle_at,
+ id_sys_setns
+};
+
+struct feature {
+ size_t cnt;
+ enum syscall_id *feature_list;
+};
+
+#define CREATE_FEATURE(x) \
+{ \
+ .cnt = sizeof(x) / sizeof(enum syscall_id), \
+ .feature_list = x \
+}
+
+static struct feature features[] = {
+ CREATE_FEATURE(id_file),
+ CREATE_FEATURE(id_irq),
+ CREATE_FEATURE(id_net),
+ CREATE_FEATURE(id_process),
+ CREATE_FEATURE(id_signal),
+ CREATE_FEATURE(id_desc)
+};
+
+#undef CREATE_FEATURE
+
+enum {
+ feature_cnt = sizeof(features) / sizeof(struct feature)
+};
+
+#endif /* _FEATURES_DATA_H */
--- /dev/null
+#include "ks_features.h"
+#include "features_data.h"
+#include <asm/errno.h>
+#include <linux/module.h>
+
+static int register_syscall(size_t id)
+{
+ printk("register_syscall: %s\n", syscall_name[id]);
+ return 0;
+}
+
+static int unregister_syscall(size_t id)
+{
+ printk("unregister_syscall: %s\n", syscall_name[id]);
+ return 0;
+}
+
+static int install_features(struct feature *f)
+{
+ size_t i, num;
+
+ for (i = 0; i < f->cnt; ++i) {
+ num = f->feature_list[i];
+
+ if (sys_counter[num] == 0) {
+ int ret = register_syscall(num);
+ if (ret) {
+ /* TODO: error */
+ return ret;
+ }
+ }
+
+ ++sys_counter[num];
+ }
+
+ return 0;
+}
+
+static int uninstall_features(struct feature *f)
+{
+ size_t i, num;
+
+ for (i = 0; i < f->cnt; ++i) {
+ num = f->feature_list[i];
+
+ if (sys_counter[num] == 0) {
+ /* TODO: error */
+ return -EINVAL;
+ }
+
+ --sys_counter[num];
+
+ if (sys_counter[num] == 0) {
+ int ret = unregister_syscall(num);
+ if (ret) {
+ /* TODO: error */
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static struct feature *get_feature(enum feature_id id)
+{
+ if (id < 0 || id >= (int)feature_cnt)
+ return NULL;
+
+ return &features[id];
+}
+
+int set_features(enum feature_id id)
+{
+ struct feature *f = get_feature(id);
+
+ if (f == NULL)
+ return -EINVAL;
+
+ return install_features(f);
+}
+
+int unset_features(enum feature_id id)
+{
+ struct feature *f = get_feature(id);
+
+ if (f == NULL)
+ return -EINVAL;
+
+ return uninstall_features(f);
+}
+
+static int __init init_ks_feature(void)
+{
+ return 0;
+}
+
+static void __exit exit_ks_feature(void)
+{
+}
+
+module_init(init_ks_feature);
+module_exit(exit_ks_feature);
+
+/* debug */
+static void print_feature(struct feature *f)
+{
+ size_t i;
+
+ for (i = 0; i < f->cnt; ++i) {
+ printk(" feature[%3u]: %s\n", i, syscall_name[f->feature_list[i]]);
+ }
+}
+
+void print_features(void)
+{
+ int i;
+
+ printk("print_features:\n");
+ for (i = 0; i < feature_cnt; ++i) {
+ printk("feature: %d\n", i);
+ print_feature(&features[i]);
+ }
+}
+
+void print_all_syscall(void)
+{
+ int i;
+
+ printk("SYSCALL:\n");
+ for (i = 0; i < syscall_name_cnt; ++i) {
+ printk(" [%2d] %s\n", sys_counter[i], syscall_name[i]);
+ }
+}
+/* debug */
--- /dev/null
+#ifndef _KS_FEATURES_H
+#define _KS_FEATURES_H
+
+enum feature_id {
+ FID_FILE,
+ FID_IRQ,
+ FID_NET,
+ FID_PROCESS,
+ FID_SIGNAL,
+ FID_DESC
+};
+
+int set_features(enum feature_id id);
+int unset_features(enum feature_id id);
+
+/* debug */
+void print_features(void);
+void print_all_syscall(void);
+/* debug */
+
+#endif /* _KS_FEATURES_H */
--- /dev/null
+#!/bin/sh
+
+MODULE_NAME=swap_ks_features
+
+# Check for running module in /proc/modules
+RUNNING=`sed "/${MODULE_NAME}/ ! d" /proc/modules`
+
+if [ "${RUNNING}" = "" ]; then
+ ./bin/insmod.sh ${MODULE_NAME}.ko
+ if [ $? -ne 0 ]; then
+ echo "Error: unable to load ${MODULE_NAME} module!"
+ exit 1
+ fi
+else
+ echo "${MODULE_NAME} module is already running!"
+ exit 1
+fi
projects / kernel / swap-modules.git / commitdiff