ks_features/features_data.c

   1 /*
   2  *  SWAP kernel features
   3  *  modules/ks_features/features_data.c
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  *
  19  * Copyright (C) Samsung Electronics, 2013
  20  *
  21  * 2013  Vyacheslav Cherkashin: SWAP ks_features implement
  22  *
  23  */
  24
  25
  26 #include "syscall_list.h"
  27 #include <linux/mutex.h>
  28
  29 struct feature {
  30         size_t cnt;
  31         enum syscall_id *feature_list;
  32         int sub_type;
  33
  34         unsigned enable:1;
  35 };
  36
  37 #define X(name, args) id_##name
  38 enum syscall_id {
  39         SYSCALL_LIST
  40 };
  41 #undef X
  42
  43 static enum syscall_id id_none[] = {};
  44
  45 static enum syscall_id id_file[] = {
  46         id_sys_acct,
  47         id_sys_mount,
  48         id_sys_umount,
  49         id_sys_truncate,
  50 /* TODO:
  51  *      id_sys_stat,
  52  */
  53         id_sys_statfs,
  54         id_sys_statfs64,
  55 /* TODO:
  56  *      id_sys_lstat,
  57  */
  58         id_sys_stat64,
  59         id_sys_fstat64,
  60         id_sys_lstat64,
  61         id_sys_truncate64,
  62         id_sys_ftruncate64,
  63         id_sys_setxattr,
  64         id_sys_getxattr,
  65         id_sys_listxattr,
  66         id_sys_removexattr,
  67         id_sys_chroot,
  68         id_sys_mknod,
  69         id_sys_link,
  70         id_sys_symlink,
  71         id_sys_unlink,
  72         id_sys_rename,
  73         id_sys_chmod,
  74         id_sys_readlink,
  75         id_sys_creat,
  76         id_sys_open,
  77         id_sys_access,
  78         id_sys_chown,
  79         id_sys_chown16,
  80         id_sys_utime,
  81         id_sys_utimes,
  82         id_sys_pread64,
  83         id_sys_pwrite64,
  84         id_sys_preadv,
  85         id_sys_pwritev,
  86         id_sys_getcwd,
  87         id_sys_mkdir,
  88         id_sys_chdir,
  89         id_sys_rmdir,
  90         id_sys_swapon,
  91         id_sys_swapoff,
  92         id_sys_uselib,
  93         id_sys_mknodat,
  94         id_sys_mkdirat,
  95         id_sys_unlinkat,
  96         id_sys_symlinkat,
  97         id_sys_linkat,
  98         id_sys_renameat,
  99         id_sys_futimesat,
 100         id_sys_faccessat,
 101         id_sys_fchmodat,
 102         id_sys_fchownat,
 103         id_sys_openat,
 104 /* TODO:
 105  *      id_sys_newfstatat,
 106  */
 107         id_sys_readlinkat,
 108         id_sys_utimensat,
 109         id_sys_fanotify_mark,
 110         id_sys_execve,
 111         id_sys_name_to_handle_at,
 112         id_sys_open_by_handle_at
 113 };
 114
 115 static enum syscall_id id_ipc[] = {
 116         id_sys_msgget,
 117         id_sys_msgsnd,
 118         id_sys_msgrcv,
 119         id_sys_msgctl,
 120         id_sys_semget,
 121         id_sys_semop,
 122         id_sys_semctl,
 123         id_sys_semtimedop,
 124         id_sys_shmat,
 125         id_sys_shmget,
 126         id_sys_shmdt,
 127         id_sys_shmctl,
 128         id_sys_ipc
 129 };
 130
 131 static enum syscall_id id_net[] = {
 132         id_sys_shutdown,
 133         id_sys_sendfile,
 134         id_sys_sendfile64,
 135         id_sys_setsockopt,
 136         id_sys_getsockopt,
 137         id_sys_bind,
 138         id_sys_connect,
 139         id_sys_accept,
 140         id_sys_accept4,
 141         id_sys_getsockname,
 142         id_sys_getpeername,
 143         id_sys_send,
 144         id_sys_sendto,
 145         id_sys_sendmsg,
 146         id_sys_sendmmsg,
 147         id_sys_recv,
 148         id_sys_recvfrom,
 149         id_sys_recvmsg,
 150         id_sys_recvmmsg,
 151         id_sys_socket,
 152         id_sys_socketpair,
 153         id_sys_socketcall,
 154         id_sys_listen
 155 };
 156
 157 static enum syscall_id id_process[] = {
 158         id_sys_exit,
 159         id_sys_exit_group,
 160         id_sys_wait4,
 161         id_sys_waitid,
 162 /* TODO:
 163  *      id_sys_waitpid,
 164  */
 165         id_sys_rt_tgsigqueueinfo,
 166         id_sys_unshare,
 167         id_sys_fork,
 168         id_sys_vfork,
 169 /* TODO: add support CONFIG_CLONE_BACKWARDS
 170  *      id_sys_clone,
 171  *      id_sys_clone,
 172  */
 173     id_sys_execve
 174 };
 175
 176 static enum syscall_id id_signal[] = {
 177         id_sys_sigpending,
 178         id_sys_sigprocmask,
 179 /* TODO:
 180  *      id_sys_sigaltstack,
 181  */
 182 /* TODO: add support CONFIG_OLD_SIGSUSPEND and CONFIG_OLD_SIGSUSPEND3
 183  *      id_sys_sigsuspend,
 184  *      id_sys_sigsuspend,
 185  */
 186         id_sys_rt_sigsuspend,
 187         id_sys_sigaction,
 188         id_sys_rt_sigaction,
 189         id_sys_rt_sigprocmask,
 190         id_sys_rt_sigtimedwait,
 191         id_sys_rt_tgsigqueueinfo,
 192         id_sys_kill,
 193         id_sys_tgkill,
 194 /* TODO:
 195  *      id_sys_signal,
 196  */
 197         id_sys_pause,
 198         id_sys_signalfd,
 199         id_sys_signalfd4
 200 };
 201
 202 static enum syscall_id id_desc[] = {
 203         id_sys_fgetxattr,
 204         id_sys_flistxattr,
 205         id_sys_fremovexattr,
 206         id_sys_fadvise64_64,
 207         id_sys_pipe2,
 208         id_sys_dup3,
 209         id_sys_sendfile,
 210         id_sys_sendfile64,
 211         id_sys_preadv,
 212         id_sys_pwritev,
 213         id_sys_epoll_create1,
 214         id_sys_epoll_ctl,
 215         id_sys_epoll_wait,
 216         id_sys_epoll_pwait,
 217         id_sys_inotify_init,
 218         id_sys_inotify_init1,
 219         id_sys_inotify_add_watch,
 220         id_sys_inotify_rm_watch,
 221         id_sys_mknodat,
 222         id_sys_mkdirat,
 223         id_sys_unlinkat,
 224         id_sys_symlinkat,
 225         id_sys_linkat,
 226         id_sys_renameat,
 227         id_sys_futimesat,
 228         id_sys_faccessat,
 229         id_sys_fchmodat,
 230         id_sys_fchownat,
 231         id_sys_openat,
 232 /* TODO:
 233  *      id_sys_newfstatat,
 234  */
 235         id_sys_readlinkat,
 236         id_sys_utimensat,
 237         id_sys_splice,
 238         id_sys_vmsplice,
 239         id_sys_tee,
 240         id_sys_signalfd,
 241         id_sys_signalfd4,
 242         id_sys_timerfd_create,
 243         id_sys_timerfd_settime,
 244         id_sys_timerfd_gettime,
 245         id_sys_eventfd,
 246         id_sys_eventfd2,
 247         id_sys_fallocate,
 248         id_sys_pselect6,
 249         id_sys_ppoll,
 250         id_sys_fanotify_init,
 251         id_sys_fanotify_mark,
 252         id_sys_syncfs,
 253         id_sys_mmap_pgoff,
 254         id_sys_old_mmap,
 255         id_sys_name_to_handle_at,
 256         id_sys_setns
 257 };
 258
 259 #define CREATE_FEATURE(x, subtype)                              \
 260 {                                                               \
 261         .cnt = sizeof(x) / sizeof(enum syscall_id),             \
 262         .feature_list = x,                                      \
 263         .sub_type = subtype,                                    \
 264         .enable = 0                                             \
 265 }
 266
 267 static struct feature features[] = {
 268         CREATE_FEATURE(id_none, PST_NONE),
 269         CREATE_FEATURE(id_file, PST_KS_FILE),
 270         CREATE_FEATURE(id_ipc, PST_KS_IPC),
 271         CREATE_FEATURE(id_process, PST_KS_PROCESS),
 272         CREATE_FEATURE(id_signal, PST_KS_SIGNAL),
 273         CREATE_FEATURE(id_net, PST_KS_NETWORK),
 274         CREATE_FEATURE(id_desc, PST_KS_DESC)
 275 };
 276
 277 enum {
 278         feature_cnt = sizeof(features) / sizeof(struct feature)
 279 };
 280
 281 static int feature_index(struct feature *f)
 282 {
 283         return f - features;
 284 }