sys/kern/makesyscalls.sh

   1 #! /bin/sh -
   2 #       @(#)makesyscalls.sh     8.1 (Berkeley) 6/10/93
   3 # $FreeBSD$
   4
   5 set -e
   6
   7 # name of compat options:
   8 compat=COMPAT_43
   9 compat4=COMPAT_FREEBSD4
  10
  11 # output files:
  12 sysnames="syscalls.c"
  13 sysproto="../sys/sysproto.h"
  14 sysproto_h=_SYS_SYSPROTO_H_
  15 syshdr="../sys/syscall.h"
  16 sysmk="../sys/syscall.mk"
  17 syssw="init_sysent.c"
  18 syscallprefix="SYS_"
  19 switchname="sysent"
  20 namesname="syscallnames"
  21
  22 # tmp files:
  23 sysdcl="sysent.dcl.$$"
  24 syscompat="sysent.compat.$$"
  25 syscompatdcl="sysent.compatdcl.$$"
  26 syscompat4="sysent.compat4.$$"
  27 syscompat4dcl="sysent.compat4dcl.$$"
  28 sysent="sysent.switch.$$"
  29 sysinc="sysinc.switch.$$"
  30 sysarg="sysarg.switch.$$"
  31 sysprotoend="sysprotoend.$$"
  32
  33 trap "rm $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $sysent $sysinc $sysarg $sysprotoend" 0
  34
  35 touch $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $sysent $sysinc $sysarg $sysprotoend
  36
  37 case $# in
  38     0)  echo "usage: $0 input-file <config-file>" 1>&2
  39         exit 1
  40         ;;
  41 esac
  42
  43 if [ -n "$2" -a -f "$2" ]; then
  44         . $2
  45 fi
  46
  47 sed -e '
  48 s/\$//g
  49 :join
  50         /\\$/{a\
  51
  52         N
  53         s/\\\n//
  54         b join
  55         }
  56 2,${
  57         /^#/!s/\([{}()*,]\)/ \1 /g
  58 }
  59 ' < $1 | awk "
  60         BEGIN {
  61                 sysdcl = \"$sysdcl\"
  62                 sysproto = \"$sysproto\"
  63                 sysprotoend = \"$sysprotoend\"
  64                 sysproto_h = \"$sysproto_h\"
  65                 syscompat = \"$syscompat\"
  66                 syscompatdcl = \"$syscompatdcl\"
  67                 syscompat4 = \"$syscompat4\"
  68                 syscompat4dcl = \"$syscompat4dcl\"
  69                 sysent = \"$sysent\"
  70                 syssw = \"$syssw\"
  71                 sysinc = \"$sysinc\"
  72                 sysarg = \"$sysarg\"
  73                 sysnames = \"$sysnames\"
  74                 syshdr = \"$syshdr\"
  75                 sysmk = \"$sysmk\"
  76                 compat = \"$compat\"
  77                 compat4 = \"$compat4\"
  78                 syscallprefix = \"$syscallprefix\"
  79                 switchname = \"$switchname\"
  80                 namesname = \"$namesname\"
  81                 infile = \"$1\"
  82                 "'
  83
  84                 printf "/*\n * System call switch table.\n *\n" > syssw
  85                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  86                 printf " * $%s$\n", "FreeBSD" > syssw
  87
  88                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  89                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  90                 printf " * $%s$\n", "FreeBSD" > sysarg
  91
  92                 printf "\n#ifdef %s\n\n", compat > syscompat
  93                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
  94
  95                 printf "/*\n * System call names.\n *\n" > sysnames
  96                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  97                 printf " * $%s$\n", "FreeBSD" > sysnames
  98
  99                 printf "/*\n * System call numbers.\n *\n" > syshdr
 100                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
 101                 printf " * $%s$\n", "FreeBSD" > syshdr
 102                 printf "# FreeBSD system call names.\n" > sysmk
 103                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
 104                 printf "# $%s$\n", "FreeBSD" > sysmk
 105         }
 106         NR == 1 {
 107                 gsub("[$]FreeBSD: ", "", $0)
 108                 gsub(" [$]", "", $0)
 109
 110                 printf " * created from%s\n */\n\n", $0 > syssw
 111
 112                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
 113                 printf "struct sysent %s[] = {\n",switchname > sysent
 114
 115                 printf " * created from%s\n */\n\n", $0 > sysarg
 116                 printf "#ifndef %s\n", sysproto_h > sysarg
 117                 printf "#define\t%s\n\n", sysproto_h > sysarg
 118                 printf "#include <sys/signal.h>\n" > sysarg
 119                 printf "#include <sys/acl.h>\n" > sysarg
 120                 printf "#include <sys/thr.h>\n" > sysarg
 121                 printf "#include <sys/umtx.h>\n" > sysarg
 122                 printf "#include <posix4/_semaphore.h>\n\n" > sysarg
 123                 printf "#include <sys/ucontext.h>\n\n" > sysarg
 124                 printf "struct proc;\n\n" > sysarg
 125                 printf "struct thread;\n\n" > sysarg
 126                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
 127                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
 128                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
 129                 printf "#define\tPADL_(t)\t0\n" > sysarg
 130                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
 131                 printf "#else\n" > sysarg
 132                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
 133                 printf "#define\tPADR_(t)\t0\n" > sysarg
 134                 printf "#endif\n\n" > sysarg
 135
 136                 printf " * created from%s\n */\n\n", $0 > sysnames
 137                 printf "const char *%s[] = {\n", namesname > sysnames
 138
 139                 printf " * created from%s\n */\n\n", $0 > syshdr
 140
 141                 printf "# created from%s\nMIASM = ", $0 > sysmk
 142
 143                 next
 144         }
 145         NF == 0 || $1 ~ /^;/ {
 146                 next
 147         }
 148         $1 ~ /^#[       ]*include/ {
 149                 print > sysinc
 150                 next
 151         }
 152         $1 ~ /^#[       ]*if/ {
 153                 print > sysent
 154                 print > sysdcl
 155                 print > sysarg
 156                 print > syscompat
 157                 print > syscompat4
 158                 print > sysnames
 159                 savesyscall = syscall
 160                 next
 161         }
 162         $1 ~ /^#[       ]*else/ {
 163                 print > sysent
 164                 print > sysdcl
 165                 print > sysarg
 166                 print > syscompat
 167                 print > syscompat4
 168                 print > sysnames
 169                 syscall = savesyscall
 170                 next
 171         }
 172         $1 ~ /^#/ {
 173                 print > sysent
 174                 print > sysdcl
 175                 print > sysarg
 176                 print > syscompat
 177                 print > syscompat4
 178                 print > sysnames
 179                 next
 180         }
 181         syscall != $1 {
 182                 printf "%s: line %d: syscall number out of sync at %d\n",
 183                     infile, NR, syscall
 184                 printf "line is:\n"
 185                 print
 186                 exit 1
 187         }
 188         function align_sysent_comment(column) {
 189                 printf("\t") > sysent
 190                 column = column + 8 - column % 8
 191                 while (column < 56) {
 192                         printf("\t") > sysent
 193                         column = column + 8
 194                 }
 195         }
 196         function parserr(was, wanted) {
 197                 printf "%s: line %d: unexpected %s (expected %s)\n",
 198                     infile, NR, was, wanted
 199                 exit 1
 200         }
 201         function parseline() {
 202                 f=4                     # toss number, type, audit event
 203                 argc= 0;
 204                 argssize = "0"
 205                 if ($NF != "}") {
 206                         funcalias=$(NF-2)
 207                         argalias=$(NF-1)
 208                         rettype=$NF
 209                         end=NF-3
 210                 } else {
 211                         funcalias=""
 212                         argalias=""
 213                         rettype="int"
 214                         end=NF
 215                 }
 216                 if ($3 == "NODEF") {
 217                         auditev="AUE_NULL"
 218                         funcname=$4
 219                         argssize = "AS(" $6 ")"
 220                         return
 221                 }
 222                 if ($f != "{")
 223                         parserr($f, "{")
 224                 f++
 225                 if ($end != "}")
 226                         parserr($end, "}")
 227                 end--
 228                 if ($end != ";")
 229                         parserr($end, ";")
 230                 end--
 231                 if ($end != ")")
 232                         parserr($end, ")")
 233                 end--
 234
 235                 f++     #function return type
 236
 237                 funcname=$f
 238                 if (funcalias == "")
 239                         funcalias = funcname
 240                 if (argalias == "") {
 241                         argalias = funcname "_args"
 242                         if ($3 == "COMPAT")
 243                                 argalias = "o" argalias
 244                         if ($3 == "COMPAT4")
 245                                 argalias = "freebsd4_" argalias
 246                 }
 247                 f++
 248
 249                 if ($f != "(")
 250                         parserr($f, ")")
 251                 f++
 252
 253                 if (f == end) {
 254                         if ($f != "void")
 255                                 parserr($f, "argument definition")
 256                         return
 257                 }
 258
 259                 while (f <= end) {
 260                         argc++
 261                         argtype[argc]=""
 262                         oldf=""
 263                         while (f < end && $(f+1) != ",") {
 264                                 if (argtype[argc] != "" && oldf != "*")
 265                                         argtype[argc] = argtype[argc]" ";
 266                                 argtype[argc] = argtype[argc]$f;
 267                                 oldf = $f;
 268                                 f++
 269                         }
 270                         if (argtype[argc] == "")
 271                                 parserr($f, "argument definition")
 272                         argname[argc]=$f;
 273                         f += 2;                 # skip name, and any comma
 274                 }
 275                 if (argc != 0)
 276                         argssize = "AS(" argalias ")"
 277         }
 278         {       comment = $4
 279                 if (NF < 7)
 280                         for (i = 5; i <= NF; i++)
 281                                 comment = comment " " $i
 282         }
 283
 284         #
 285         # The AUE_ audit event identifier.
 286         #
 287         {
 288                 auditev = $2;
 289         }
 290
 291         $3 == "STD" || $3 == "NODEF" || $3 == "NOARGS"  || $3 == "NOPROTO" \
 292             || $3 == "NOIMPL" || $3 == "NOSTD" {
 293                 parseline()
 294                 if ((!nosys || funcname != "nosys") && \
 295                     (funcname != "lkmnosys") && (funcname != "lkmressys")) {
 296                         if (argc != 0 && $3 != "NOARGS" && $3 != "NOPROTO") {
 297                                 printf("struct %s {\n", argalias) > sysarg
 298                                 for (i = 1; i <= argc; i++)
 299                                         printf("\tchar %s_l_[PADL_(%s)]; " \
 300                                             "%s %s; char %s_r_[PADR_(%s)];\n",
 301                                             argname[i], argtype[i],
 302                                             argtype[i], argname[i],
 303                                             argname[i], argtype[i]) > sysarg
 304                                 printf("};\n") > sysarg
 305                         }
 306                         else if ($3 != "NOARGS" && $3 != "NOPROTO" && \
 307                             $3 != "NODEF")
 308                                 printf("struct %s {\n\tregister_t dummy;\n};\n",
 309                                     argalias) > sysarg
 310                 }
 311                 if (($3 != "NOPROTO" && $3 != "NODEF" && \
 312                     (funcname != "nosys" || !nosys)) || \
 313                     (funcname == "lkmnosys" && !lkmnosys) || \
 314                     funcname == "lkmressys") {
 315                         printf("%s\t%s(struct thread *, struct %s *)",
 316                             rettype, funcname, argalias) > sysdcl
 317                         printf(";\n") > sysdcl
 318                 }
 319                 if (funcname == "nosys")
 320                         nosys = 1
 321                 if (funcname == "lkmnosys")
 322                         lkmnosys = 1
 323                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
 324                 column = 8 + 2 + length(argssize) + 15
 325                 if ($3 == "NOIMPL") {
 326                         printf("%s },", "nosys, AUE_NULL") > sysent
 327                         column = column + length("nosys") + 3
 328                 } else if ($3 == "NOSTD") {
 329                         printf("%s },", "lkmressys, AUE_NULL") > sysent
 330                         column = column + length("lkmressys") + 3
 331                 } else {
 332                         printf("%s, %s },", funcname, auditev) > sysent
 333                         column = column + length(funcname) + length(auditev) + 3
 334                 }
 335                 align_sysent_comment(column)
 336                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
 337                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
 338                     funcalias, syscall, funcalias) > sysnames
 339                 if ($3 != "NODEF") {
 340                         printf("#define\t%s%s\t%d\n", syscallprefix,
 341                             funcalias, syscall) > syshdr
 342                         printf(" \\\n\t%s.o", funcalias) > sysmk
 343                 }
 344                 syscall++
 345                 next
 346         }
 347         $3 == "COMPAT" || $3 == "COMPAT4" || $3 == "CPT_NOA" {
 348                 if ($3 == "COMPAT" || $3 == "CPT_NOA") {
 349                         ncompat++
 350                         out = syscompat
 351                         outdcl = syscompatdcl
 352                         wrap = "compat"
 353                         prefix = "o"
 354                 } else if ($3 == "COMPAT4") {
 355                         ncompat4++
 356                         out = syscompat4
 357                         outdcl = syscompat4dcl
 358                         wrap = "compat4"
 359                         prefix = "freebsd4_"
 360                 }
 361                 parseline()
 362                 if (argc != 0 && $3 != "CPT_NOA") {
 363                         printf("struct %s {\n", argalias) > out
 364                         for (i = 1; i <= argc; i++)
 365                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
 366                                     "char %s_r_[PADR_(%s)];\n",
 367                                     argname[i], argtype[i],
 368                                     argtype[i], argname[i],
 369                                     argname[i], argtype[i]) > out
 370                         printf("};\n") > out
 371                 }
 372                 else if($3 != "CPT_NOA")
 373                         printf("struct %s {\n\tregister_t dummy;\n};\n",
 374                             argalias) > sysarg
 375                 printf("%s\t%s%s(struct thread *, struct %s *);\n",
 376                     rettype, prefix, funcname, argalias) > outdcl
 377                 printf("\t{ %s(%s,%s), %s },",
 378                     wrap, argssize, funcname, auditev) > sysent
 379                 align_sysent_comment(8 + 9 + \
 380                     length(argssize) + 1 + length(funcname) + length(auditev) + 4)
 381                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 382                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 383                     funcalias, syscall, funcalias) > sysnames
 384                 printf("\t\t\t\t/* %d is old %s */\n",
 385                     syscall, funcalias) > syshdr
 386                 syscall++
 387                 next
 388         }
 389         $3 == "LIBCOMPAT" {
 390                 ncompat++
 391                 parseline()
 392                 printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
 393                 printf("\t{ compat(%s,%s), %s },",
 394                     argssize, funcname, auditev) > sysent
 395                 align_sysent_comment(8 + 9 + \
 396                     length(argssize) + 1 + length(funcname) + length(auditev) + 4)
 397                 printf("/* %d = old %s */\n", syscall, funcalias) > sysent
 398                 printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
 399                     funcalias, syscall, funcalias) > sysnames
 400                 printf("#define\t%s%s\t%d\t/* compatibility; still used by libc */\n",
 401                     syscallprefix, funcalias, syscall) > syshdr
 402                 printf(" \\\n\t%s.o", funcalias) > sysmk
 403                 syscall++
 404                 next
 405         }
 406         $3 == "OBSOL" {
 407                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL },") > sysent
 408                 align_sysent_comment(34)
 409                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
 410                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
 411                     $4, syscall, comment) > sysnames
 412                 printf("\t\t\t\t/* %d is obsolete %s */\n",
 413                     syscall, comment) > syshdr
 414                 syscall++
 415                 next
 416         }
 417         $3 == "UNIMPL" {
 418                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL },\t\t\t/* %d = %s */\n",
 419                     syscall, comment) > sysent
 420                 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
 421                     syscall, syscall, comment) > sysnames
 422                 syscall++
 423                 next
 424         }
 425         {
 426                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
 427                 exit 1
 428         }
 429         END {
 430                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
 431
 432                 if (ncompat != 0 || ncompat4 != 0)
 433                         printf "#include \"opt_compat.h\"\n\n" > syssw
 434                 printf "#include \<bsm/audit_kevents.h\>\n" > syssw
 435
 436                 if (ncompat != 0) {
 437                         printf "\n#ifdef %s\n", compat > sysinc
 438                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
 439                         printf "#else\n" > sysinc
 440                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 441                         printf "#endif\n" > sysinc
 442                 }
 443
 444                 if (ncompat4 != 0) {
 445                         printf "\n#ifdef %s\n", compat4 > sysinc
 446                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
 447                         printf "#else\n" > sysinc
 448                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
 449                         printf "#endif\n" > sysinc
 450                 }
 451
 452                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
 453
 454                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
 455
 456                 printf("#undef PAD_\n") > sysprotoend
 457                 printf("#undef PADL_\n") > sysprotoend
 458                 printf("#undef PADR_\n") > sysprotoend
 459                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 460
 461                 printf("\n") > sysmk
 462                 printf("};\n") > sysent
 463                 printf("};\n") > sysnames
 464                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
 465                     > syshdr
 466         } '
 467
 468 cat $sysinc $sysent >> $syssw
 469 cat $sysarg $sysdcl \
 470         $syscompat $syscompatdcl \
 471         $syscompat4 $syscompat4dcl \
 472         $sysprotoend > $sysproto
 473