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
60 if [ -n "$2" -a -f "$2" ]; then
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\n" > sysarg
160 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
161 printf "struct proc;\n\n" > sysarg
162 printf "struct thread;\n\n" > sysarg
163 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
164 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
165 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
166 printf "#define\tPADL_(t)\t0\n" > sysarg
167 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
168 printf "#else\n" > sysarg
169 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
170 printf "#define\tPADR_(t)\t0\n" > sysarg
171 printf "#endif\n\n" > sysarg
173 printf " * created from%s\n */\n\n", $0 > sysnames
174 printf "const char *%s[] = {\n", namesname > sysnames
176 printf " * created from%s\n */\n\n", $0 > syshdr
178 printf "# created from%s\nMIASM = ", $0 > sysmk
180 printf " * This file is part of the DTrace syscall provider.\n */\n\n" > systrace
181 printf "static void\nsystrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args)\n{\n" > systrace
182 printf "\tint64_t *iarg = (int64_t *) uarg;\n" > systrace
183 printf "\tswitch (sysnum) {\n" > systrace
185 printf "static void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
186 printf "\tswitch (sysnum) {\n" > systracetmp
188 printf "static void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceret
189 printf "\tswitch (sysnum) {\n" > systraceret
193 NF == 0 || $1 ~ /^;/ {
196 $1 ~ /^#[ ]*include/ {
212 savesyscall = syscall
227 syscall = savesyscall
245 printf "%s: line %d: syscall number out of sync at %d\n",
251 # Returns true if the type "name" is the first flag in the type field
252 function type(name, flags, n) {
253 n = split($3, flags, /\|/)
254 return (n > 0 && flags[1] == name)
256 # Returns true if the flag "name" is set in the type field
257 function flag(name, flags, i, n) {
258 n = split($3, flags, /\|/)
259 for (i = 1; i <= n; i++)
260 if (flags[i] == name)
264 function align_sysent_comment(column) {
265 printf("\t") > sysent
266 column = column + 8 - column % 8
267 while (column < 56) {
268 printf("\t") > sysent
272 function parserr(was, wanted) {
273 printf "%s: line %d: unexpected %s (expected %s)\n",
274 infile, NR, was, wanted
277 function parseline() {
278 f=4 # toss number, type, audit event
281 thr_flag = "SY_THR_STATIC"
282 if (flag("NOTSTATIC")) {
283 thr_flag = "SY_THR_ABSENT"
299 argssize = "AS(" $6 ")"
321 # We now know the func name, so define a flags field for it.
322 # Do this before any other processing as we may return early
325 for (cap in capenabled) {
326 if (funcname == capenabled[cap]) {
327 flags = "SYF_CAPENABLED";
333 if (argalias == "") {
334 argalias = funcname "_args"
336 argalias = "o" argalias
338 argalias = "freebsd4_" argalias
340 argalias = "freebsd6_" argalias
342 argalias = "freebsd7_" argalias
352 parserr($f, "argument definition")
360 while (f < end && $(f+1) != ",") {
361 if (argtype[argc] != "" && oldf != "*")
362 argtype[argc] = argtype[argc]" ";
363 argtype[argc] = argtype[argc]$f;
367 if (argtype[argc] == "")
368 parserr($f, "argument definition")
370 f += 2; # skip name, and any comma
373 argssize = "AS(" argalias ")"
377 for (i = 5; i <= NF; i++)
378 comment = comment " " $i
382 # The AUE_ audit event identifier.
395 type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
398 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
399 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
400 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systraceret
402 printf("\t\tswitch(ndx) {\n") > systracetmp
403 printf("\t\tstruct %s *p = params;\n", argalias) > systrace
404 for (i = 1; i <= argc; i++) {
405 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, argtype[i]) > systracetmp
406 if (index(argtype[i], "*") > 0 || argtype[i] == "caddr_t")
407 printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
409 argname[i], argtype[i]) > systrace
410 else if (substr(argtype[i], 1, 1) == "u" || argtype[i] == "size_t")
411 printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
413 argname[i], argtype[i]) > systrace
415 printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
417 argname[i], argtype[i]) > systrace
419 printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
421 printf("\t\tif (ndx == 0 || ndx == 1)\n") > systraceret
422 printf("\t\t\tp = \"%s\";\n", syscallret) > systraceret
423 printf("\t\tbreak;\n") > systraceret
425 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
426 printf("\t\tbreak;\n") > systracetmp
427 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
429 printf("struct %s {\n", argalias) > sysarg
430 for (i = 1; i <= argc; i++)
431 printf("\tchar %s_l_[PADL_(%s)]; " \
432 "%s %s; char %s_r_[PADR_(%s)];\n",
433 argname[i], argtype[i],
434 argtype[i], argname[i],
435 argname[i], argtype[i]) > sysarg
436 printf("};\n") > sysarg
438 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
439 printf("struct %s {\n\tregister_t dummy;\n};\n",
441 if (!flag("NOPROTO") && !flag("NODEF")) {
442 if (funcname == "nosys" || funcname == "lkmnosys" ||
443 funcname == "sysarch" || funcname ~ /^freebsd/ ||
444 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
445 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
446 printf("%s\t%s(struct thread *, struct %s *)",
447 rettype, funcname, argalias) > sysdcl
449 printf("%s\tsys_%s(struct thread *, struct %s *)",
450 rettype, funcname, argalias) > sysdcl
452 printf(";\n") > sysdcl
453 printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
454 funcalias, auditev) > sysaue
456 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
457 column = 8 + 2 + length(argssize) + 15
459 printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
460 column = column + length("lkmressys") + length("AUE_NULL") + 3
462 if (funcname == "nosys" || funcname == "sysarch" ||
463 funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
464 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
465 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
466 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
467 column = column + length(funcname) + length(auditev) + length(flags) + 3
469 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
470 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
473 align_sysent_comment(column)
474 printf("/* %d = %s */\n", syscall, funcalias) > sysent
475 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
476 funcalias, syscall, funcalias) > sysnames
477 if (!flag("NODEF")) {
478 printf("#define\t%s%s\t%d\n", syscallprefix,
479 funcalias, syscall) > syshdr
480 printf(" \\\n\t%s.o", funcalias) > sysmk
485 type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
487 if (flag("COMPAT")) {
490 outdcl = syscompatdcl
494 } else if (flag("COMPAT4")) {
497 outdcl = syscompat4dcl
501 } else if (flag("COMPAT6")) {
504 outdcl = syscompat6dcl
508 } else if (flag("COMPAT7")) {
511 outdcl = syscompat7dcl
517 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
519 printf("struct %s {\n", argalias) > out
520 for (i = 1; i <= argc; i++)
521 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
522 "char %s_r_[PADR_(%s)];\n",
523 argname[i], argtype[i],
524 argtype[i], argname[i],
525 argname[i], argtype[i]) > out
528 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
529 printf("struct %s {\n\tregister_t dummy;\n};\n",
531 if (!flag("NOPROTO") && !flag("NODEF")) {
532 printf("%s\t%s%s(struct thread *, struct %s *);\n",
533 rettype, prefix, funcname, argalias) > outdcl
534 printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
535 prefix, funcname, auditev) > sysaue
538 printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
539 "0", "lkmressys", "AUE_NULL") > sysent
540 align_sysent_comment(8 + 2 + length("0") + 15 + \
541 length("lkmressys") + length("AUE_NULL") + 3)
543 printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
544 wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
545 align_sysent_comment(8 + 9 + length(argssize) + 1 + \
546 length(funcname) + length(auditev) + \
549 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
550 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
551 wrap, funcalias, syscall, descr, funcalias) > sysnames
552 if (flag("COMPAT")) {
553 printf("\t\t\t\t/* %d is old %s */\n",
554 syscall, funcalias) > syshdr
555 } else if (!flag("NODEF")) {
556 printf("#define\t%s%s%s\t%d\n", syscallprefix,
557 prefix, funcalias, syscall) > syshdr
558 printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
564 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
565 align_sysent_comment(34)
566 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
567 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
568 $4, syscall, comment) > sysnames
569 printf("\t\t\t\t/* %d is obsolete %s */\n",
570 syscall, comment) > syshdr
575 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
576 syscall, comment) > sysent
577 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
578 syscall, syscall, comment) > sysnames
583 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
587 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
589 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
590 printf "#include \"opt_compat.h\"\n\n" > syssw
593 printf "\n#ifdef %s\n", compat > sysinc
594 printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
595 printf "#else\n" > sysinc
596 printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
597 printf "#endif\n" > sysinc
601 printf "\n#ifdef %s\n", compat4 > sysinc
602 printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
603 printf "#else\n" > sysinc
604 printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
605 printf "#endif\n" > sysinc
609 printf "\n#ifdef %s\n", compat6 > sysinc
610 printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
611 printf "#else\n" > sysinc
612 printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
613 printf "#endif\n" > sysinc
617 printf "\n#ifdef %s\n", compat7 > sysinc
618 printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
619 printf "#else\n" > sysinc
620 printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
621 printf "#endif\n" > sysinc
624 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
625 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
626 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
627 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
629 printf("\n#undef PAD_\n") > sysprotoend
630 printf("#undef PADL_\n") > sysprotoend
631 printf("#undef PADR_\n") > sysprotoend
632 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
635 printf("};\n") > sysent
636 printf("};\n") > sysnames
637 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
639 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
640 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
641 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceret
644 cat $sysinc $sysent >> $syssw
645 cat $sysarg $sysdcl \
646 $syscompat $syscompatdcl \
647 $syscompat4 $syscompat4dcl \
648 $syscompat6 $syscompat6dcl \
649 $syscompat7 $syscompat7dcl \
650 $sysaue $sysprotoend > $sysproto
651 cat $systracetmp >> $systrace
652 cat $systraceret >> $systrace