2 # @(#)makesyscalls.sh 8.1 (Berkeley) 6/10/93
7 # name of compat options:
9 compat4=COMPAT_FREEBSD4
10 compat6=COMPAT_FREEBSD6
11 compat7=COMPAT_FREEBSD7
15 sysproto="../sys/sysproto.h"
16 sysproto_h=_SYS_SYSPROTO_H_
17 syshdr="../sys/syscall.h"
18 sysmk="../sys/syscall.mk"
22 namesname="syscallnames"
23 systrace="systrace_args.c"
26 sysaue="sysent.aue.$$"
27 sysdcl="sysent.dcl.$$"
28 syscompat="sysent.compat.$$"
29 syscompatdcl="sysent.compatdcl.$$"
30 syscompat4="sysent.compat4.$$"
31 syscompat4dcl="sysent.compat4dcl.$$"
32 syscompat6="sysent.compat6.$$"
33 syscompat6dcl="sysent.compat6dcl.$$"
34 syscompat7="sysent.compat7.$$"
35 syscompat7dcl="sysent.compat7dcl.$$"
36 sysent="sysent.switch.$$"
37 sysinc="sysinc.switch.$$"
38 sysarg="sysarg.switch.$$"
39 sysprotoend="sysprotoend.$$"
40 systracetmp="systrace.$$"
41 systraceret="systraceret.$$"
43 if [ -r capabilities.conf ]; then
44 capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
45 capenabled=`echo $capenabled | sed 's/ /,/g'`
50 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret" 0
52 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp $systraceret
55 0) echo "usage: $0 input-file <config-file>" 1>&2
74 /^#/!s/\([{}()*,]\)/ \1 /g
80 sysproto = \"$sysproto\"
81 sysprotoend = \"$sysprotoend\"
82 sysproto_h = \"$sysproto_h\"
83 syscompat = \"$syscompat\"
84 syscompatdcl = \"$syscompatdcl\"
85 syscompat4 = \"$syscompat4\"
86 syscompat4dcl = \"$syscompat4dcl\"
87 syscompat6 = \"$syscompat6\"
88 syscompat6dcl = \"$syscompat6dcl\"
89 syscompat7 = \"$syscompat7\"
90 syscompat7dcl = \"$syscompat7dcl\"
95 sysnames = \"$sysnames\"
98 systrace = \"$systrace\"
99 systracetmp = \"$systracetmp\"
100 systraceret = \"$systraceret\"
102 compat4 = \"$compat4\"
103 compat6 = \"$compat6\"
104 compat7 = \"$compat7\"
105 syscallprefix = \"$syscallprefix\"
106 switchname = \"$switchname\"
107 namesname = \"$namesname\"
109 capenabled_string = \"$capenabled\"
112 split(capenabled_string, capenabled, ",");
114 printf "/*\n * System call switch table.\n *\n" > syssw
115 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
116 printf " * $%s$\n", "FreeBSD" > syssw
118 printf "/*\n * System call prototypes.\n *\n" > sysarg
119 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
120 printf " * $%s$\n", "FreeBSD" > sysarg
122 printf "\n#ifdef %s\n\n", compat > syscompat
123 printf "\n#ifdef %s\n\n", compat4 > syscompat4
124 printf "\n#ifdef %s\n\n", compat6 > syscompat6
125 printf "\n#ifdef %s\n\n", compat7 > syscompat7
127 printf "/*\n * System call names.\n *\n" > sysnames
128 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
129 printf " * $%s$\n", "FreeBSD" > sysnames
131 printf "/*\n * System call numbers.\n *\n" > syshdr
132 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
133 printf " * $%s$\n", "FreeBSD" > syshdr
134 printf "# FreeBSD system call names.\n" > sysmk
135 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
136 printf "# $%s$\n", "FreeBSD" > sysmk
138 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
139 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
140 printf " * $%s$\n", "FreeBSD" > systrace
143 gsub("[$]FreeBSD: ", "", $0)
146 printf " * created from%s\n */\n\n", $0 > syssw
148 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
149 printf "struct sysent %s[] = {\n",switchname > sysent
151 printf " * created from%s\n */\n\n", $0 > sysarg
152 printf "#ifndef %s\n", sysproto_h > sysarg
153 printf "#define\t%s\n\n", sysproto_h > sysarg
154 printf "#include <sys/signal.h>\n" > sysarg
155 printf "#include <sys/acl.h>\n" > sysarg
156 printf "#include <sys/cpuset.h>\n" > sysarg
157 printf "#include <sys/_ffcounter.h>\n" > sysarg
158 printf "#include <sys/_semaphore.h>\n" > sysarg
159 printf "#include <sys/ucontext.h>\n" > sysarg
160 printf "#include <sys/wait.h>\n\n" > sysarg
161 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
162 printf "struct proc;\n\n" > sysarg
163 printf "struct thread;\n\n" > sysarg
164 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
165 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
166 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
167 printf "#define\tPADL_(t)\t0\n" > sysarg
168 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
169 printf "#else\n" > sysarg
170 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
171 printf "#define\tPADR_(t)\t0\n" > sysarg
172 printf "#endif\n\n" > sysarg
174 printf " * created from%s\n */\n\n", $0 > sysnames
175 printf "const char *%s[] = {\n", namesname > sysnames
177 printf " * created from%s\n */\n\n", $0 > syshdr
179 printf "# created from%s\nMIASM = ", $0 > sysmk
181 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
182 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
183 printf "\tint64_t *iarg = (int64_t *) uarg;\n" > systrace
184 printf "\tswitch (sysnum) {\n" > systrace
186 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
187 printf "\tswitch (sysnum) {\n" > systracetmp
189 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
190 printf "\tswitch (sysnum) {\n" > systraceret
194 NF == 0 || $1 ~ /^;/ {
197 $1 ~ /^#[ ]*include/ {
213 savesyscall = syscall
228 syscall = savesyscall
246 printf "%s: line %d: syscall number out of sync at %d\n",
252 # Returns true if the type "name" is the first flag in the type field
253 function type(name, flags, n) {
254 n = split($3, flags, /\|/)
255 return (n > 0 && flags[1] == name)
257 # Returns true if the flag "name" is set in the type field
258 function flag(name, flags, i, n) {
259 n = split($3, flags, /\|/)
260 for (i = 1; i <= n; i++)
261 if (flags[i] == name)
265 function align_sysent_comment(column) {
266 printf("\t") > sysent
267 column = column + 8 - column % 8
268 while (column < 56) {
269 printf("\t") > sysent
273 function parserr(was, wanted) {
274 printf "%s: line %d: unexpected %s (expected %s)\n",
275 infile, NR, was, wanted
278 function parseline() {
279 f=4 # toss number, type, audit event
282 thr_flag = "SY_THR_STATIC"
283 if (flag("NOTSTATIC")) {
284 thr_flag = "SY_THR_ABSENT"
300 argssize = "AS(" $6 ")"
322 # We now know the func name, so define a flags field for it.
323 # Do this before any other processing as we may return early
326 for (cap in capenabled) {
327 if (funcname == capenabled[cap]) {
328 flags = "SYF_CAPENABLED";
334 if (argalias == "") {
335 argalias = funcname "_args"
337 argalias = "o" argalias
339 argalias = "freebsd4_" argalias
341 argalias = "freebsd6_" argalias
343 argalias = "freebsd7_" argalias
353 parserr($f, "argument definition")
361 while (f < end && $(f+1) != ",") {
362 if (argtype[argc] != "" && oldf != "*")
363 argtype[argc] = argtype[argc]" ";
364 argtype[argc] = argtype[argc]$f;
368 if (argtype[argc] == "")
369 parserr($f, "argument definition")
371 f += 2; # skip name, and any comma
374 argssize = "AS(" argalias ")"
378 for (i = 5; i <= NF; i++)
379 comment = comment " " $i
383 # The AUE_ audit event identifier.
396 type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
399 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
400 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
401 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
403 printf("\t\tswitch(ndx) {\n") > systracetmp
404 printf("\t\tstruct %s *p = params;\n", argalias) > systrace
405 for (i = 1; i <= argc; i++) {
407 sub("__restrict$", "", arg)
408 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
409 if (index(arg, "*") > 0 || arg == "caddr_t")
410 printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
412 argname[i], arg) > systrace
413 else if (arg == "union l_semun")
414 printf("\t\tuarg[%d] = p->%s.buf; /* %s */\n", \
416 argname[i], arg) > systrace
417 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
418 printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
420 argname[i], arg) > systrace
422 printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
424 argname[i], arg) > systrace
426 printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
428 printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
429 printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
430 printf("\t\tbreak;\n") > systraceret
432 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
433 printf("\t\tbreak;\n") > systracetmp
434 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
436 printf("struct %s {\n", argalias) > sysarg
437 for (i = 1; i <= argc; i++)
438 printf("\tchar %s_l_[PADL_(%s)]; " \
439 "%s %s; char %s_r_[PADR_(%s)];\n",
440 argname[i], argtype[i],
441 argtype[i], argname[i],
442 argname[i], argtype[i]) > sysarg
443 printf("};\n") > sysarg
445 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
446 printf("struct %s {\n\tregister_t dummy;\n};\n",
448 if (!flag("NOPROTO") && !flag("NODEF")) {
449 if (funcname == "nosys" || funcname == "lkmnosys" ||
450 funcname == "sysarch" || funcname ~ /^freebsd/ ||
451 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
452 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
453 printf("%s\t%s(struct thread *, struct %s *)",
454 rettype, funcname, argalias) > sysdcl
456 printf("%s\tsys_%s(struct thread *, struct %s *)",
457 rettype, funcname, argalias) > sysdcl
459 printf(";\n") > sysdcl
460 printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
461 funcalias, auditev) > sysaue
463 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
464 column = 8 + 2 + length(argssize) + 15
466 printf("lkmressys, AUE_NULL, NULL, 0, 0, %s, SY_THR_ABSENT },", flags) > sysent
467 column = column + length("lkmressys") + length("AUE_NULL") + 3
469 if (funcname == "nosys" || funcname == "sysarch" ||
470 funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
471 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
472 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
473 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
474 column = column + length(funcname) + length(auditev) + length(flags) + 3
476 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
477 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
480 align_sysent_comment(column)
481 printf("/* %d = %s */\n", syscall, funcalias) > sysent
482 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
483 funcalias, syscall, funcalias) > sysnames
484 if (!flag("NODEF")) {
485 printf("#define\t%s%s\t%d\n", syscallprefix,
486 funcalias, syscall) > syshdr
487 printf(" \\\n\t%s.o", funcalias) > sysmk
492 type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
494 if (flag("COMPAT")) {
497 outdcl = syscompatdcl
501 } else if (flag("COMPAT4")) {
504 outdcl = syscompat4dcl
508 } else if (flag("COMPAT6")) {
511 outdcl = syscompat6dcl
515 } else if (flag("COMPAT7")) {
518 outdcl = syscompat7dcl
524 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
526 printf("struct %s {\n", argalias) > out
527 for (i = 1; i <= argc; i++)
528 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
529 "char %s_r_[PADR_(%s)];\n",
530 argname[i], argtype[i],
531 argtype[i], argname[i],
532 argname[i], argtype[i]) > out
535 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
536 printf("struct %s {\n\tregister_t dummy;\n};\n",
538 if (!flag("NOPROTO") && !flag("NODEF")) {
539 printf("%s\t%s%s(struct thread *, struct %s *);\n",
540 rettype, prefix, funcname, argalias) > outdcl
541 printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
542 prefix, funcname, auditev) > sysaue
545 printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
546 "0", "lkmressys", "AUE_NULL") > sysent
547 align_sysent_comment(8 + 2 + length("0") + 15 + \
548 length("lkmressys") + length("AUE_NULL") + 3)
550 printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
551 wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
552 align_sysent_comment(8 + 9 + length(argssize) + 1 + \
553 length(funcname) + length(auditev) + \
556 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
557 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
558 wrap, funcalias, syscall, descr, funcalias) > sysnames
559 if (flag("COMPAT")) {
560 printf("\t\t\t\t/* %d is old %s */\n",
561 syscall, funcalias) > syshdr
562 } else if (!flag("NODEF")) {
563 printf("#define\t%s%s%s\t%d\n", syscallprefix,
564 prefix, funcalias, syscall) > syshdr
565 printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
571 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
572 align_sysent_comment(34)
573 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
574 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
575 $4, syscall, comment) > sysnames
576 printf("\t\t\t\t/* %d is obsolete %s */\n",
577 syscall, comment) > syshdr
582 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
583 syscall, comment) > sysent
584 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
585 syscall, syscall, comment) > sysnames
590 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
594 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
596 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
597 printf "#include \"opt_compat.h\"\n\n" > syssw
600 printf "\n#ifdef %s\n", compat > sysinc
601 printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
602 printf "#else\n" > sysinc
603 printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
604 printf "#endif\n" > sysinc
608 printf "\n#ifdef %s\n", compat4 > sysinc
609 printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
610 printf "#else\n" > sysinc
611 printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
612 printf "#endif\n" > sysinc
616 printf "\n#ifdef %s\n", compat6 > sysinc
617 printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
618 printf "#else\n" > sysinc
619 printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
620 printf "#endif\n" > sysinc
624 printf "\n#ifdef %s\n", compat7 > sysinc
625 printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
626 printf "#else\n" > sysinc
627 printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
628 printf "#endif\n" > sysinc
631 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
632 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
633 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
634 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
636 printf("\n#undef PAD_\n") > sysprotoend
637 printf("#undef PADL_\n") > sysprotoend
638 printf("#undef PADR_\n") > sysprotoend
639 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
642 printf("};\n") > sysent
643 printf("};\n") > sysnames
644 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
646 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
647 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
648 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
651 cat $sysinc $sysent >> $syssw
652 cat $sysarg $sysdcl \
653 $syscompat $syscompatdcl \
654 $syscompat4 $syscompat4dcl \
655 $syscompat6 $syscompat6dcl \
656 $syscompat7 $syscompat7dcl \
657 $sysaue $sysprotoend > $sysproto
658 cat $systracetmp >> $systrace
659 cat $systraceret >> $systrace