makesyscalls.sh

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    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 compat6=COMPAT_FREEBSD6
   11 compat7=COMPAT_FREEBSD7
   12 compat10=COMPAT_FREEBSD10
   13 
   14 # output files:
   15 sysnames="syscalls.c"
   16 sysproto="../sys/sysproto.h"
   17 sysproto_h=_SYS_SYSPROTO_H_
   18 syshdr="../sys/syscall.h"
   19 sysmk="../sys/syscall.mk"
   20 syssw="init_sysent.c"
   21 syscallprefix="SYS_"
   22 switchname="sysent"
   23 namesname="syscallnames"
   24 systrace="systrace_args.c"
   25 
   26 # tmp files:
   27 sysaue="sysent.aue.$$"
   28 sysdcl="sysent.dcl.$$"
   29 syscompat="sysent.compat.$$"
   30 syscompatdcl="sysent.compatdcl.$$"
   31 syscompat4="sysent.compat4.$$"
   32 syscompat4dcl="sysent.compat4dcl.$$"
   33 syscompat6="sysent.compat6.$$"
   34 syscompat6dcl="sysent.compat6dcl.$$"
   35 syscompat7="sysent.compat7.$$"
   36 syscompat7dcl="sysent.compat7dcl.$$"
   37 syscompat10="sysent.compat10.$$"
   38 syscompat10dcl="sysent.compat10dcl.$$"
   39 sysent="sysent.switch.$$"
   40 sysinc="sysinc.switch.$$"
   41 sysarg="sysarg.switch.$$"
   42 sysprotoend="sysprotoend.$$"
   43 systracetmp="systrace.$$"
   44 systraceret="systraceret.$$"
   45 
   46 if [ -r capabilities.conf ]; then
   47         capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
   48         capenabled=`echo $capenabled | sed 's/ /,/g'`
   49 else
   50         capenabled=""
   51 fi
   52 
   53 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
   54 
   55 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $syscompat10 $syscompat10dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
   56 
   57 case $# in
   58     0)  echo "usage: $0 input-file <config-file>" 1>&2
   59         exit 1
   60         ;;
   61 esac
   62 
   63 if [ -n "$2" ]; then
   64         . $2
   65 fi
   66 
   67 sed -e '
   68 :join
   69         /\\$/{a\
   70 
   71         N
   72         s/\\\n//
   73         b join
   74         }
   75 2,${
   76         /^#/!s/\([{}()*,]\)/ \1 /g
   77 }
   78 ' < $1 | awk "
   79         BEGIN {
   80                 sysaue = \"$sysaue\"
   81                 sysdcl = \"$sysdcl\"
   82                 sysproto = \"$sysproto\"
   83                 sysprotoend = \"$sysprotoend\"
   84                 sysproto_h = \"$sysproto_h\"
   85                 syscompat = \"$syscompat\"
   86                 syscompatdcl = \"$syscompatdcl\"
   87                 syscompat4 = \"$syscompat4\"
   88                 syscompat4dcl = \"$syscompat4dcl\"
   89                 syscompat6 = \"$syscompat6\"
   90                 syscompat6dcl = \"$syscompat6dcl\"
   91                 syscompat7 = \"$syscompat7\"
   92                 syscompat7dcl = \"$syscompat7dcl\"
   93                 syscompat10 = \"$syscompat10\"
   94                 syscompat10dcl = \"$syscompat10dcl\"
   95                 sysent = \"$sysent\"
   96                 syssw = \"$syssw\"
   97                 sysinc = \"$sysinc\"
   98                 sysarg = \"$sysarg\"
   99                 sysnames = \"$sysnames\"
  100                 syshdr = \"$syshdr\"
  101                 sysmk = \"$sysmk\"
  102                 systrace = \"$systrace\"
  103                 systracetmp = \"$systracetmp\"
  104                 systraceret = \"$systraceret\"
  105                 compat = \"$compat\"
  106                 compat4 = \"$compat4\"
  107                 compat6 = \"$compat6\"
  108                 compat7 = \"$compat7\"
  109                 compat10 = \"$compat10\"
  110                 syscallprefix = \"$syscallprefix\"
  111                 switchname = \"$switchname\"
  112                 namesname = \"$namesname\"
  113                 infile = \"$1\"
  114                 capenabled_string = \"$capenabled\"
  115                 "'
  116 
  117                 split(capenabled_string, capenabled, ",");
  118 
  119                 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
  120                 printf "struct sysent %s[] = {\n",switchname > sysent
  121 
  122                 printf "/*\n * System call switch table.\n *\n" > syssw
  123                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
  124                 printf " * $%s$\n", "FreeBSD" > syssw
  125                 printf " */\n\n" > syssw
  126 
  127                 printf "/*\n * System call prototypes.\n *\n" > sysarg
  128                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
  129                 printf " * $%s$\n", "FreeBSD" > sysarg
  130                 printf " */\n\n" > sysarg
  131                 printf "#ifndef %s\n", sysproto_h > sysarg
  132                 printf "#define\t%s\n\n", sysproto_h > sysarg
  133                 printf "#include <sys/signal.h>\n" > sysarg
  134                 printf "#include <sys/acl.h>\n" > sysarg
  135                 printf "#include <sys/cpuset.h>\n" > sysarg
  136                 printf "#include <sys/_ffcounter.h>\n" > sysarg
  137                 printf "#include <sys/_semaphore.h>\n" > sysarg
  138                 printf "#include <sys/ucontext.h>\n" > sysarg
  139                 printf "#include <sys/wait.h>\n\n" > sysarg
  140                 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
  141                 printf "struct proc;\n\n" > sysarg
  142                 printf "struct thread;\n\n" > sysarg
  143                 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
  144                 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
  145                 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
  146                 printf "#define\tPADL_(t)\t0\n" > sysarg
  147                 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
  148                 printf "#else\n" > sysarg
  149                 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
  150                 printf "#define\tPADR_(t)\t0\n" > sysarg
  151                 printf "#endif\n\n" > sysarg
  152 
  153                 printf "\n#ifdef %s\n\n", compat > syscompat
  154                 printf "\n#ifdef %s\n\n", compat4 > syscompat4
  155                 printf "\n#ifdef %s\n\n", compat6 > syscompat6
  156                 printf "\n#ifdef %s\n\n", compat7 > syscompat7
  157                 printf "\n#ifdef %s\n\n", compat10 > syscompat10
  158 
  159                 printf "/*\n * System call names.\n *\n" > sysnames
  160                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
  161                 printf " * $%s$\n", "FreeBSD" > sysnames
  162                 printf " */\n\n" > sysnames
  163                 printf "const char *%s[] = {\n", namesname > sysnames
  164 
  165                 printf "/*\n * System call numbers.\n *\n" > syshdr
  166                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
  167                 printf " * $%s$\n", "FreeBSD" > syshdr
  168                 printf " */\n\n" > syshdr
  169 
  170                 printf "# FreeBSD system call object files.\n" > sysmk
  171                 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
  172                 printf "# $%s$\n", "FreeBSD" > sysmk
  173                 printf "MIASM = " > sysmk
  174 
  175                 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
  176                 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
  177                 printf " * $%s$\n", "FreeBSD" > systrace
  178                 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
  179                 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
  180                 printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systrace
  181                 printf "\tswitch (sysnum) {\n" > systrace
  182 
  183                 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
  184                 printf "\tswitch (sysnum) {\n" > systracetmp
  185 
  186                 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
  187                 printf "\tswitch (sysnum) {\n" > systraceret
  188         }
  189         NR == 1 {
  190                 next
  191         }
  192         NF == 0 || $1 ~ /^;/ {
  193                 next
  194         }
  195         $1 ~ /^#[       ]*include/ {
  196                 print > sysinc
  197                 next
  198         }
  199         $1 ~ /^#[       ]*if/ {
  200                 print > sysent
  201                 print > sysdcl
  202                 print > sysarg
  203                 print > syscompat
  204                 print > syscompat4
  205                 print > syscompat6
  206                 print > syscompat7
  207                 print > syscompat10
  208                 print > sysnames
  209                 print > systrace
  210                 print > systracetmp
  211                 print > systraceret
  212                 savesyscall = syscall
  213                 next
  214         }
  215         $1 ~ /^#[       ]*else/ {
  216                 print > sysent
  217                 print > sysdcl
  218                 print > sysarg
  219                 print > syscompat
  220                 print > syscompat4
  221                 print > syscompat6
  222                 print > syscompat7
  223                 print > syscompat10
  224                 print > sysnames
  225                 print > systrace
  226                 print > systracetmp
  227                 print > systraceret
  228                 syscall = savesyscall
  229                 next
  230         }
  231         $1 ~ /^#/ {
  232                 print > sysent
  233                 print > sysdcl
  234                 print > sysarg
  235                 print > syscompat
  236                 print > syscompat4
  237                 print > syscompat6
  238                 print > syscompat7
  239                 print > syscompat10
  240                 print > sysnames
  241                 print > systrace
  242                 print > systracetmp
  243                 print > systraceret
  244                 next
  245         }
  246         # Returns true if the type "name" is the first flag in the type field
  247         function type(name, flags, n) {
  248                 n = split($3, flags, /\|/)
  249                 return (n > 0 && flags[1] == name)
  250         }
  251         # Returns true if the flag "name" is set in the type field
  252         function flag(name, flags, i, n) {
  253                 n = split($3, flags, /\|/)
  254                 for (i = 1; i <= n; i++)
  255                         if (flags[i] == name)
  256                                 return 1
  257                 return 0
  258         }
  259         {
  260                 n = split($1, syscall_range, /-/)
  261                 if (n == 1) {
  262                         syscall_range[2] = syscall_range[1]
  263                 } else if (n == 2) {
  264                         if (!type("UNIMPL")) {
  265                                 printf "%s: line %d: range permitted only with UNIMPL\n",
  266                                     infile, NR
  267                                 exit 1
  268                         }
  269                 } else {
  270                         printf "%s: line %d: invalid syscall number or range %s\n",
  271                             infile, NR, $1
  272                         exit 1
  273                 }
  274         }
  275         syscall != syscall_range[1] {
  276                 printf "%s: line %d: syscall number out of sync at %d\n",
  277                     infile, NR, syscall
  278                 printf "line is:\n"
  279                 print
  280                 exit 1
  281         }
  282         function align_sysent_comment(column) {
  283                 printf("\t") > sysent
  284                 column = column + 8 - column % 8
  285                 while (column < 56) {
  286                         printf("\t") > sysent
  287                         column = column + 8
  288                 }
  289         }
  290         function parserr(was, wanted) {
  291                 printf "%s: line %d: unexpected %s (expected %s)\n",
  292                     infile, NR, was, wanted
  293                 exit 1
  294         }
  295         function parseline() {
  296                 f=4                     # toss number, type, audit event
  297                 argc= 0;
  298                 argssize = "0"
  299                 thr_flag = "SY_THR_STATIC"
  300                 if (flag("NOTSTATIC")) {
  301                         thr_flag = "SY_THR_ABSENT"
  302                 }
  303                 if ($NF != "}") {
  304                         funcalias=$(NF-2)
  305                         argalias=$(NF-1)
  306                         rettype=$NF
  307                         end=NF-3
  308                 } else {
  309                         funcalias=""
  310                         argalias=""
  311                         rettype="int"
  312                         end=NF
  313                 }
  314                 if (flag("NODEF")) {
  315                         auditev="AUE_NULL"
  316                         funcname=$4
  317                         argssize = "AS(" $6 ")"
  318                         return
  319                 }
  320                 if ($f != "{")
  321                         parserr($f, "{")
  322                 f++
  323                 if ($end != "}")
  324                         parserr($end, "}")
  325                 end--
  326                 if ($end != ";")
  327                         parserr($end, ";")
  328                 end--
  329                 if ($end != ")")
  330                         parserr($end, ")")
  331                 end--
  332 
  333                 syscallret=$f
  334                 f++
  335 
  336                 funcname=$f
  337 
  338                 #
  339                 # We now know the func name, so define a flags field for it.
  340                 # Do this before any other processing as we may return early
  341                 # from it.
  342                 #
  343                 for (cap in capenabled) {
  344                         if (funcname == capenabled[cap]) {
  345                                 flags = "SYF_CAPENABLED";
  346                                 break;
  347                         }
  348                 }
  349 
  350                 if (funcalias == "")
  351                         funcalias = funcname
  352                 if (argalias == "") {
  353                         argalias = funcname "_args"
  354                         if (flag("COMPAT"))
  355                                 argalias = "o" argalias
  356                         if (flag("COMPAT4"))
  357                                 argalias = "freebsd4_" argalias
  358                         if (flag("COMPAT6"))
  359                                 argalias = "freebsd6_" argalias
  360                         if (flag("COMPAT7"))
  361                                 argalias = "freebsd7_" argalias
  362                         if (flag("COMPAT10"))
  363                                 argalias = "freebsd10_" argalias
  364                 }
  365                 f++
  366 
  367                 if ($f != "(")
  368                         parserr($f, ")")
  369                 f++
  370 
  371                 if (f == end) {
  372                         if ($f != "void")
  373                                 parserr($f, "argument definition")
  374                         return
  375                 }
  376 
  377                 while (f <= end) {
  378                         argc++
  379                         argtype[argc]=""
  380                         oldf=""
  381                         while (f < end && $(f+1) != ",") {
  382                                 if (argtype[argc] != "" && oldf != "*")
  383                                         argtype[argc] = argtype[argc]" ";
  384                                 argtype[argc] = argtype[argc]$f;
  385                                 oldf = $f;
  386                                 f++
  387                         }
  388                         if (argtype[argc] == "")
  389                                 parserr($f, "argument definition")
  390                         argname[argc]=$f;
  391                         f += 2;                 # skip name, and any comma
  392                 }
  393                 if (argc != 0)
  394                         argssize = "AS(" argalias ")"
  395         }
  396         {       comment = $4
  397                 if (NF < 7)
  398                         for (i = 5; i <= NF; i++)
  399                                 comment = comment " " $i
  400         }
  401 
  402         #
  403         # The AUE_ audit event identifier.
  404         #
  405         {
  406                 auditev = $2;
  407         }
  408 
  409         #
  410         # The flags, if any.
  411         #
  412         {
  413                 flags = "0";
  414         }
  415 
  416         type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
  417             || type("NOSTD") {
  418                 parseline()
  419                 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
  420                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
  421                 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
  422                 if (argc > 0) {
  423                         printf("\t\tswitch(ndx) {\n") > systracetmp
  424                         printf("\t\tstruct %s *p = params;\n", argalias) > systrace
  425                         for (i = 1; i <= argc; i++) {
  426                                 arg = argtype[i]
  427                                 sub("__restrict$", "", arg)
  428                                 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
  429                                 if (index(arg, "*") > 0 || arg == "caddr_t")
  430                                         printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
  431                                              i - 1, \
  432                                              argname[i], arg) > systrace
  433                                 else if (arg == "union l_semun")
  434                                         printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
  435                                              i - 1, \
  436                                              argname[i], arg) > systrace
  437                                 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
  438                                         printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
  439                                              i - 1, \
  440                                              argname[i], arg) > systrace
  441                                 else
  442                                         printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
  443                                              i - 1, \
  444                                              argname[i], arg) > systrace
  445                         }
  446                         printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
  447 
  448                         printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
  449                         printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
  450                         printf("\t\tbreak;\n") > systraceret
  451                 }
  452                 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
  453                 printf("\t\tbreak;\n") > systracetmp
  454                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  455                     !flag("NODEF")) {
  456                         printf("struct %s {\n", argalias) > sysarg
  457                         for (i = 1; i <= argc; i++)
  458                                 printf("\tchar %s_l_[PADL_(%s)]; " \
  459                                     "%s %s; char %s_r_[PADR_(%s)];\n",
  460                                     argname[i], argtype[i],
  461                                     argtype[i], argname[i],
  462                                     argname[i], argtype[i]) > sysarg
  463                         printf("};\n") > sysarg
  464                 }
  465                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  466                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  467                             argalias) > sysarg
  468                 if (!flag("NOPROTO") && !flag("NODEF")) {
  469                         if (funcname == "nosys" || funcname == "lkmnosys" ||
  470                             funcname == "sysarch" || funcname ~ /^freebsd/ || 
  471                             funcname ~ /^linux/ || funcname ~ /^svr4/ || 
  472                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
  473                             funcname ~ /^cloudabi/) {
  474                                 printf("%s\t%s(struct thread *, struct %s *)",
  475                                     rettype, funcname, argalias) > sysdcl
  476                         } else {
  477                                 printf("%s\tsys_%s(struct thread *, struct %s *)",
  478                                     rettype, funcname, argalias) > sysdcl
  479                         } 
  480                         printf(";\n") > sysdcl
  481                         printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
  482                             funcalias, auditev) > sysaue
  483                 }
  484                 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
  485                 column = 8 + 2 + length(argssize) + 15
  486                 if (flag("NOSTD")) {
  487                         printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
  488                         column = column + length("lkmressys") + length("AUE_NULL") + 3
  489                 } else {
  490                         if (funcname == "nosys" || funcname == "sysarch" || 
  491                             funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
  492                             funcname ~ /^linux/ || funcname ~ /^svr4/ ||
  493                             funcname ~ /^ibcs2/ || funcname ~ /^xenix/ ||
  494                             funcname ~ /^cloudabi/) {
  495                                 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  496                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 
  497                         } else {
  498                                 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
  499                                 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
  500                         } 
  501                 } 
  502                 align_sysent_comment(column)
  503                 printf("/* %d = %s */\n", syscall, funcalias) > sysent
  504                 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
  505                     funcalias, syscall, funcalias) > sysnames
  506                 if (!flag("NODEF")) {
  507                         printf("#define\t%s%s\t%d\n", syscallprefix,
  508                             funcalias, syscall) > syshdr
  509                         printf(" \\\n\t%s.o", funcalias) > sysmk
  510                 }
  511                 syscall++
  512                 next
  513         }
  514         type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
  515             type("COMPAT7") || type("COMPAT10") {
  516                 if (flag("COMPAT")) {
  517                         ncompat++
  518                         out = syscompat
  519                         outdcl = syscompatdcl
  520                         wrap = "compat"
  521                         prefix = "o"
  522                         descr = "old"
  523                 } else if (flag("COMPAT4")) {
  524                         ncompat4++
  525                         out = syscompat4
  526                         outdcl = syscompat4dcl
  527                         wrap = "compat4"
  528                         prefix = "freebsd4_"
  529                         descr = "freebsd4"
  530                 } else if (flag("COMPAT6")) {
  531                         ncompat6++
  532                         out = syscompat6
  533                         outdcl = syscompat6dcl
  534                         wrap = "compat6"
  535                         prefix = "freebsd6_"
  536                         descr = "freebsd6"
  537                 } else if (flag("COMPAT7")) {
  538                         ncompat7++
  539                         out = syscompat7
  540                         outdcl = syscompat7dcl
  541                         wrap = "compat7"
  542                         prefix = "freebsd7_"
  543                         descr = "freebsd7"
  544                 } else if (flag("COMPAT10")) {
  545                         ncompat10++
  546                         out = syscompat10
  547                         outdcl = syscompat10dcl
  548                         wrap = "compat10"
  549                         prefix = "freebsd10_"
  550                         descr = "freebsd10"
  551                 }
  552                 parseline()
  553                 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
  554                     !flag("NODEF")) {
  555                         printf("struct %s {\n", argalias) > out
  556                         for (i = 1; i <= argc; i++)
  557                                 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
  558                                     "char %s_r_[PADR_(%s)];\n",
  559                                     argname[i], argtype[i],
  560                                     argtype[i], argname[i],
  561                                     argname[i], argtype[i]) > out
  562                         printf("};\n") > out
  563                 }
  564                 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
  565                         printf("struct %s {\n\tregister_t dummy;\n};\n",
  566                             argalias) > sysarg
  567                 if (!flag("NOPROTO") && !flag("NODEF")) {
  568                         printf("%s\t%s%s(struct thread *, struct %s *);\n",
  569                             rettype, prefix, funcname, argalias) > outdcl
  570                         printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
  571                             prefix, funcname, auditev) > sysaue
  572                 }
  573                 if (flag("NOSTD")) {
  574                         printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
  575                             "0", "lkmressys", "AUE_NULL") > sysent
  576                         align_sysent_comment(8 + 2 + length("0") + 15 + \
  577                             length("lkmressys") + length("AUE_NULL") + 3)
  578                 } else {
  579                         printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
  580                             wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
  581                         align_sysent_comment(8 + 9 + length(argssize) + 1 + \
  582                             length(funcname) + length(auditev) + \
  583                             length(flags) + 4)
  584                 }
  585                 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
  586                 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
  587                     wrap, funcalias, syscall, descr, funcalias) > sysnames
  588                 # Do not provide freebsdN_* symbols in libc for < FreeBSD 7
  589                 if (flag("COMPAT") || flag("COMPAT4") || flag("COMPAT6")) {
  590                         printf("\t\t\t\t/* %d is %s %s */\n",
  591                             syscall, descr, funcalias) > syshdr
  592                 } else if (!flag("NODEF")) {
  593                         printf("#define\t%s%s%s\t%d\n", syscallprefix,
  594                             prefix, funcalias, syscall) > syshdr
  595                         printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
  596                 }
  597                 syscall++
  598                 next
  599         }
  600         type("OBSOL") {
  601                 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
  602                 align_sysent_comment(34)
  603                 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
  604                 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
  605                     $4, syscall, comment) > sysnames
  606                 printf("\t\t\t\t/* %d is obsolete %s */\n",
  607                     syscall, comment) > syshdr
  608                 syscall++
  609                 next
  610         }
  611         type("UNIMPL") {
  612                 while (syscall <= syscall_range[2]) {
  613                         printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
  614                             syscall, comment) > sysent
  615                         printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
  616                             syscall, syscall, comment) > sysnames
  617                         syscall++
  618                 }
  619                 next
  620         }
  621         {
  622                 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
  623                 exit 1
  624         }
  625         END {
  626                 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
  627 
  628                 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0 || ncompat10 != 0)
  629                         printf "#include \"opt_compat.h\"\n\n" > syssw
  630 
  631                 if (ncompat != 0) {
  632                         printf "\n#ifdef %s\n", compat > sysinc
  633                         printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
  634                         printf "#else\n" > sysinc
  635                         printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  636                         printf "#endif\n" > sysinc
  637                 }
  638 
  639                 if (ncompat4 != 0) {
  640                         printf "\n#ifdef %s\n", compat4 > sysinc
  641                         printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
  642                         printf "#else\n" > sysinc
  643                         printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  644                         printf "#endif\n" > sysinc
  645                 }
  646 
  647                 if (ncompat6 != 0) {
  648                         printf "\n#ifdef %s\n", compat6 > sysinc
  649                         printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
  650                         printf "#else\n" > sysinc
  651                         printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  652                         printf "#endif\n" > sysinc
  653                 }
  654 
  655                 if (ncompat7 != 0) {
  656                         printf "\n#ifdef %s\n", compat7 > sysinc
  657                         printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
  658                         printf "#else\n" > sysinc
  659                         printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  660                         printf "#endif\n" > sysinc
  661                 }
  662                 if (ncompat10 != 0) {
  663                         printf "\n#ifdef %s\n", compat10 > sysinc
  664                         printf "#define compat10(n, name) n, (sy_call_t *)__CONCAT(freebsd10_,name)\n" > sysinc
  665                         printf "#else\n" > sysinc
  666                         printf "#define compat10(n, name) 0, (sy_call_t *)nosys\n" > sysinc
  667                         printf "#endif\n" > sysinc
  668                 }
  669                 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
  670                 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
  671                 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
  672                 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
  673                 printf("\n#endif /* %s */\n\n", compat10) > syscompat10dcl
  674 
  675                 printf("\n#undef PAD_\n") > sysprotoend
  676                 printf("#undef PADL_\n") > sysprotoend
  677                 printf("#undef PADR_\n") > sysprotoend
  678                 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
  679 
  680                 printf("\n") > sysmk
  681                 printf("};\n") > sysent
  682                 printf("};\n") > sysnames
  683                 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
  684                     > syshdr
  685                 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
  686                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
  687                 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
  688         } '
  689 
  690 cat $sysinc $sysent >> $syssw
  691 cat $sysarg $sysdcl \
  692         $syscompat $syscompatdcl \
  693         $syscompat4 $syscompat4dcl \
  694         $syscompat6 $syscompat6dcl \
  695         $syscompat7 $syscompat7dcl \
  696         $syscompat10 $syscompat10dcl \
  697         $sysaue $sysprotoend > $sysproto
  698 cat $systracetmp >> $systrace
  699 cat $systraceret >> $systrace
  700
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FreeBSD/Linux Kernel Cross Reference sys/kern/makesyscalls.sh

FreeBSD/Linux Kernel Cross Reference
sys/kern/makesyscalls.sh
