1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2015 Dmitry Chagin <dchagin@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _LINUX_MI_H_ 29 #define _LINUX_MI_H_ 30 31 /* 32 * Machine independent set of types for the Linux types. 33 */ 34 typedef uint32_t l_dev_t; 35 36 /* 37 * Linux dev_t conversion routines. 38 * 39 * As of version 2.6.0 of the Linux kernel, dev_t is a 32-bit quantity 40 * with 12 bits set asaid for the major number and 20 for the minor number. 41 * The in-kernel dev_t encoded as MMMmmmmm, where M is a hex digit of the 42 * major number and m is a hex digit of the minor number. 43 * The user-space dev_t encoded as mmmM MMmm, where M and m is the major 44 * and minor numbers accordingly. This is downward compatible with legacy 45 * systems where dev_t is 16 bits wide, encoded as MMmm. 46 * In glibc dev_t is a 64-bit quantity, with 32-bit major and minor numbers, 47 * encoded as MMMM Mmmm mmmM MMmm. This is downward compatible with the Linux 48 * kernel and with legacy systems where dev_t is 16 bits wide. 49 * 50 * In the FreeBSD dev_t is a 64-bit quantity. The major and minor numbers 51 * are encoded as MMMmmmMm, therefore conversion of the device numbers between 52 * Linux user-space and FreeBSD kernel required. 53 */ 54 static __inline l_dev_t 55 linux_encode_dev(int _major, int _minor) 56 { 57 58 return ((_minor & 0xff) | ((_major & 0xfff) << 8) | 59 (((_minor & ~0xff) << 12) & 0xfff00000)); 60 } 61 62 static __inline l_dev_t 63 linux_new_encode_dev(dev_t _dev) 64 { 65 66 return (_dev == NODEV ? 0 : linux_encode_dev(major(_dev), minor(_dev))); 67 } 68 69 static __inline int 70 linux_encode_major(dev_t _dev) 71 { 72 73 return (_dev == NODEV ? 0 : major(_dev) & 0xfff); 74 } 75 76 static __inline int 77 linux_encode_minor(dev_t _dev) 78 { 79 80 return (_dev == NODEV ? 0 : minor(_dev) & 0xfffff); 81 } 82 83 static __inline int 84 linux_decode_major(l_dev_t _dev) 85 { 86 87 return ((_dev & 0xfff00) >> 8); 88 } 89 90 static __inline int 91 linux_decode_minor(l_dev_t _dev) 92 { 93 94 return ((_dev & 0xff) | ((_dev & 0xfff00000) >> 12)); 95 } 96 97 static __inline dev_t 98 linux_decode_dev(l_dev_t _dev) 99 { 100 101 return (makedev(linux_decode_major(_dev), linux_decode_minor(_dev))); 102 } 103 104 /* 105 * Private Brandinfo flags 106 */ 107 #define LINUX_BI_FUTEX_REQUEUE 0x01000000 108 109 /* 110 * poll() 111 */ 112 #define LINUX_POLLIN 0x0001 113 #define LINUX_POLLPRI 0x0002 114 #define LINUX_POLLOUT 0x0004 115 #define LINUX_POLLERR 0x0008 116 #define LINUX_POLLHUP 0x0010 117 #define LINUX_POLLNVAL 0x0020 118 #define LINUX_POLLRDNORM 0x0040 119 #define LINUX_POLLRDBAND 0x0080 120 #define LINUX_POLLWRNORM 0x0100 121 #define LINUX_POLLWRBAND 0x0200 122 #define LINUX_POLLMSG 0x0400 123 #define LINUX_POLLREMOVE 0x1000 124 #define LINUX_POLLRDHUP 0x2000 125 126 #define LINUX_IFHWADDRLEN 6 127 #define LINUX_IFNAMSIZ 16 128 129 struct l_sockaddr { 130 unsigned short sa_family; 131 char sa_data[14]; 132 }; 133 134 #define LINUX_ARPHRD_ETHER 1 135 #define LINUX_ARPHRD_LOOPBACK 772 136 137 /* 138 * Supported address families 139 */ 140 #define LINUX_AF_UNSPEC 0 141 #define LINUX_AF_UNIX 1 142 #define LINUX_AF_INET 2 143 #define LINUX_AF_AX25 3 144 #define LINUX_AF_IPX 4 145 #define LINUX_AF_APPLETALK 5 146 #define LINUX_AF_INET6 10 147 #define LINUX_AF_NETLINK 16 148 149 #define LINUX_NETLINK_ROUTE 0 150 #define LINUX_NETLINK_SOCK_DIAG 4 151 #define LINUX_NETLINK_NFLOG 5 152 #define LINUX_NETLINK_SELINUX 7 153 #define LINUX_NETLINK_AUDIT 9 154 #define LINUX_NETLINK_FIB_LOOKUP 10 155 #define LINUX_NETLINK_NETFILTER 12 156 #define LINUX_NETLINK_KOBJECT_UEVENT 15 157 158 /* 159 * net device flags 160 */ 161 #define LINUX_IFF_UP 0x0001 162 #define LINUX_IFF_BROADCAST 0x0002 163 #define LINUX_IFF_DEBUG 0x0004 164 #define LINUX_IFF_LOOPBACK 0x0008 165 #define LINUX_IFF_POINTOPOINT 0x0010 166 #define LINUX_IFF_NOTRAILERS 0x0020 167 #define LINUX_IFF_RUNNING 0x0040 168 #define LINUX_IFF_NOARP 0x0080 169 #define LINUX_IFF_PROMISC 0x0100 170 #define LINUX_IFF_ALLMULTI 0x0200 171 #define LINUX_IFF_MASTER 0x0400 172 #define LINUX_IFF_SLAVE 0x0800 173 #define LINUX_IFF_MULTICAST 0x1000 174 #define LINUX_IFF_PORTSEL 0x2000 175 #define LINUX_IFF_AUTOMEDIA 0x4000 176 #define LINUX_IFF_DYNAMIC 0x8000 177 178 /* sigaltstack */ 179 #define LINUX_SS_ONSTACK 1 180 #define LINUX_SS_DISABLE 2 181 182 int linux_to_bsd_sigaltstack(int lsa); 183 int bsd_to_linux_sigaltstack(int bsa); 184 185 /* sigset */ 186 typedef struct { 187 uint64_t __mask; 188 } l_sigset_t; 189 190 /* primitives to manipulate sigset_t */ 191 #define LINUX_SIGEMPTYSET(set) (set).__mask = 0 192 #define LINUX_SIGISMEMBER(set, sig) (1ULL & ((set).__mask >> _SIG_IDX(sig))) 193 #define LINUX_SIGADDSET(set, sig) (set).__mask |= 1ULL << _SIG_IDX(sig) 194 195 void linux_to_bsd_sigset(l_sigset_t *, sigset_t *); 196 void bsd_to_linux_sigset(sigset_t *, l_sigset_t *); 197 198 /* signaling */ 199 #define LINUX_SIGHUP 1 200 #define LINUX_SIGINT 2 201 #define LINUX_SIGQUIT 3 202 #define LINUX_SIGILL 4 203 #define LINUX_SIGTRAP 5 204 #define LINUX_SIGABRT 6 205 #define LINUX_SIGIOT LINUX_SIGABRT 206 #define LINUX_SIGBUS 7 207 #define LINUX_SIGFPE 8 208 #define LINUX_SIGKILL 9 209 #define LINUX_SIGUSR1 10 210 #define LINUX_SIGSEGV 11 211 #define LINUX_SIGUSR2 12 212 #define LINUX_SIGPIPE 13 213 #define LINUX_SIGALRM 14 214 #define LINUX_SIGTERM 15 215 #define LINUX_SIGSTKFLT 16 216 #define LINUX_SIGCHLD 17 217 #define LINUX_SIGCONT 18 218 #define LINUX_SIGSTOP 19 219 #define LINUX_SIGTSTP 20 220 #define LINUX_SIGTTIN 21 221 #define LINUX_SIGTTOU 22 222 #define LINUX_SIGURG 23 223 #define LINUX_SIGXCPU 24 224 #define LINUX_SIGXFSZ 25 225 #define LINUX_SIGVTALRM 26 226 #define LINUX_SIGPROF 27 227 #define LINUX_SIGWINCH 28 228 #define LINUX_SIGIO 29 229 #define LINUX_SIGPOLL LINUX_SIGIO 230 #define LINUX_SIGPWR 30 231 #define LINUX_SIGSYS 31 232 #define LINUX_SIGTBLSZ 31 233 #define LINUX_SIGRTMIN 32 234 #define LINUX_SIGRTMAX 64 235 236 #define LINUX_SIG_VALID(sig) ((sig) <= LINUX_SIGRTMAX && (sig) > 0) 237 238 int linux_to_bsd_signal(int sig); 239 int bsd_to_linux_signal(int sig); 240 241 /* sigprocmask actions */ 242 #define LINUX_SIG_BLOCK 0 243 #define LINUX_SIG_UNBLOCK 1 244 #define LINUX_SIG_SETMASK 2 245 246 void linux_dev_shm_create(void); 247 void linux_dev_shm_destroy(void); 248 249 /* 250 * mask=0 is not sensible for this application, so it will be taken to mean 251 * a mask equivalent to the value. Otherwise, (word & mask) == value maps to 252 * (word & ~mask) | value in a bitfield for the platform we're converting to. 253 */ 254 struct bsd_to_linux_bitmap { 255 int bsd_mask; 256 int bsd_value; 257 int linux_mask; 258 int linux_value; 259 }; 260 261 int bsd_to_linux_bits_(int value, struct bsd_to_linux_bitmap *bitmap, 262 size_t mapcnt, int no_value); 263 int linux_to_bsd_bits_(int value, struct bsd_to_linux_bitmap *bitmap, 264 size_t mapcnt, int no_value); 265 266 /* 267 * These functions are used for simplification of BSD <-> Linux bit conversions. 268 * Given `value`, a bit field, these functions will walk the given bitmap table 269 * and set the appropriate bits for the target platform. If any bits were 270 * successfully converted, then the return value is the equivalent of value 271 * represented with the bit values appropriate for the target platform. 272 * Otherwise, the value supplied as `no_value` is returned. 273 */ 274 #define bsd_to_linux_bits(_val, _bmap, _noval) \ 275 bsd_to_linux_bits_((_val), (_bmap), nitems((_bmap)), (_noval)) 276 #define linux_to_bsd_bits(_val, _bmap, _noval) \ 277 linux_to_bsd_bits_((_val), (_bmap), nitems((_bmap)), (_noval)) 278 279 /* 280 * Easy mapping helpers. BITMAP_EASY_LINUX represents a single bit to be 281 * translated, and the FreeBSD and Linux values are supplied. BITMAP_1t1_LINUX 282 * is the extreme version of this, where not only is it a single bit, but the 283 * name of the macro used to represent the Linux version of a bit literally has 284 * LINUX_ prepended to the normal name. 285 */ 286 #define BITMAP_EASY_LINUX(_name, _linux_name) \ 287 { \ 288 .bsd_value = (_name), \ 289 .linux_value = (_linux_name), \ 290 } 291 #define BITMAP_1t1_LINUX(_name) BITMAP_EASY_LINUX(_name, LINUX_##_name) 292 293 int bsd_to_linux_errno(int error); 294 void linux_check_errtbl(void); 295 296 #define STATX_BASIC_STATS 0x07ff 297 #define STATX_BTIME 0x0800 298 #define STATX_ALL 0x0fff 299 300 #define STATX_ATTR_COMPRESSED 0x0004 301 #define STATX_ATTR_IMMUTABLE 0x0010 302 #define STATX_ATTR_APPEND 0x0020 303 #define STATX_ATTR_NODUMP 0x0040 304 #define STATX_ATTR_ENCRYPTED 0x0800 305 #define STATX_ATTR_AUTOMOUNT 0x1000 306 307 struct l_statx_timestamp { 308 int64_t tv_sec; 309 int32_t tv_nsec; 310 int32_t __spare0; 311 }; 312 313 struct l_statx { 314 uint32_t stx_mask; 315 uint32_t stx_blksize; 316 uint64_t stx_attributes; 317 uint32_t stx_nlink; 318 uint32_t stx_uid; 319 uint32_t stx_gid; 320 uint16_t stx_mode; 321 uint16_t __spare0[1]; 322 uint64_t stx_ino; 323 uint64_t stx_size; 324 uint64_t stx_blocks; 325 uint64_t stx_attributes_mask; 326 struct l_statx_timestamp stx_atime; 327 struct l_statx_timestamp stx_btime; 328 struct l_statx_timestamp stx_ctime; 329 struct l_statx_timestamp stx_mtime; 330 uint32_t stx_rdev_major; 331 uint32_t stx_rdev_minor; 332 uint32_t stx_dev_major; 333 uint32_t stx_dev_minor; 334 uint64_t stx_mnt_id; 335 uint64_t __spare2[13]; 336 }; 337 338 /* 339 * statfs f_flags 340 */ 341 #define LINUX_ST_RDONLY 0x0001 342 #define LINUX_ST_NOSUID 0x0002 343 #define LINUX_ST_NODEV 0x0004 /* No native analogue */ 344 #define LINUX_ST_NOEXEC 0x0008 345 #define LINUX_ST_SYNCHRONOUS 0x0010 346 #define LINUX_ST_VALID 0x0020 347 #define LINUX_ST_MANDLOCK 0x0040 /* No native analogue */ 348 #define LINUX_ST_NOATIME 0x0400 349 #define LINUX_ST_NODIRATIME 0x0800 /* No native analogue */ 350 #define LINUX_ST_RELATIME 0x1000 /* No native analogue */ 351 #define LINUX_ST_NOSYMFOLLOW 0x2000 352 353 #define lower_32_bits(n) ((uint32_t)((n) & 0xffffffff)) 354 355 #ifdef KTRACE 356 #define linux_ktrsigset(s, l) \ 357 ktrstruct("l_sigset_t", (s), l) 358 #endif 359 360 /* 361 * Criteria for interface name translation 362 */ 363 #define IFP_IS_ETH(ifp) (if_gettype(ifp) == IFT_ETHER) 364 #define IFP_IS_LOOP(ifp) (if_gettype(ifp) == IFT_LOOP) 365 366 struct ifnet; 367 368 bool linux_use_real_ifname(const struct ifnet *); 369 370 void linux_netlink_register(void); 371 void linux_netlink_deregister(void); 372 373 #endif /* _LINUX_MI_H_ */ 374