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.$$"
42 if [ -r capabilities.conf ]; then
43 capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
44 capenabled=`echo $capenabled | sed 's/ /,/g'`
49 trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp" 0
51 touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp
54 0) echo "usage: $0 input-file <config-file>" 1>&2
59 if [ -n "$2" -a -f "$2" ]; then
73 /^#/!s/\([{}()*,]\)/ \1 /g
79 sysproto = \"$sysproto\"
80 sysprotoend = \"$sysprotoend\"
81 sysproto_h = \"$sysproto_h\"
82 syscompat = \"$syscompat\"
83 syscompatdcl = \"$syscompatdcl\"
84 syscompat4 = \"$syscompat4\"
85 syscompat4dcl = \"$syscompat4dcl\"
86 syscompat6 = \"$syscompat6\"
87 syscompat6dcl = \"$syscompat6dcl\"
88 syscompat7 = \"$syscompat7\"
89 syscompat7dcl = \"$syscompat7dcl\"
94 sysnames = \"$sysnames\"
97 systrace = \"$systrace\"
98 systracetmp = \"$systracetmp\"
100 compat4 = \"$compat4\"
101 compat6 = \"$compat6\"
102 compat7 = \"$compat7\"
103 syscallprefix = \"$syscallprefix\"
104 switchname = \"$switchname\"
105 namesname = \"$namesname\"
107 capenabled_string = \"$capenabled\"
110 split(capenabled_string, capenabled, ",");
112 printf "/*\n * System call switch table.\n *\n" > syssw
113 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
114 printf " * $%s$\n", "FreeBSD" > syssw
116 printf "/*\n * System call prototypes.\n *\n" > sysarg
117 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysarg
118 printf " * $%s$\n", "FreeBSD" > sysarg
120 printf "\n#ifdef %s\n\n", compat > syscompat
121 printf "\n#ifdef %s\n\n", compat4 > syscompat4
122 printf "\n#ifdef %s\n\n", compat6 > syscompat6
123 printf "\n#ifdef %s\n\n", compat7 > syscompat7
125 printf "/*\n * System call names.\n *\n" > sysnames
126 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
127 printf " * $%s$\n", "FreeBSD" > sysnames
129 printf "/*\n * System call numbers.\n *\n" > syshdr
130 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
131 printf " * $%s$\n", "FreeBSD" > syshdr
132 printf "# FreeBSD system call names.\n" > sysmk
133 printf "# DO NOT EDIT-- this file is automatically generated.\n" > sysmk
134 printf "# $%s$\n", "FreeBSD" > sysmk
136 printf "/*\n * System call argument to DTrace register array converstion.\n *\n" > systrace
137 printf " * DO NOT EDIT-- this file is automatically generated.\n" > systrace
138 printf " * $%s$\n", "FreeBSD" > systrace
141 gsub("[$]FreeBSD: ", "", $0)
144 printf " * created from%s\n */\n\n", $0 > syssw
146 printf "\n/* The casts are bogus but will do for now. */\n" > sysent
147 printf "struct sysent %s[] = {\n",switchname > sysent
149 printf " * created from%s\n */\n\n", $0 > sysarg
150 printf "#ifndef %s\n", sysproto_h > sysarg
151 printf "#define\t%s\n\n", sysproto_h > sysarg
152 printf "#include <sys/signal.h>\n" > sysarg
153 printf "#include <sys/acl.h>\n" > sysarg
154 printf "#include <sys/cpuset.h>\n" > sysarg
155 printf "#include <sys/_semaphore.h>\n" > sysarg
156 printf "#include <sys/ucontext.h>\n" > sysarg
157 printf "#include <sys/wait.h>\n\n" > sysarg
158 printf "#include <bsm/audit_kevents.h>\n\n" > sysarg
159 printf "struct proc;\n\n" > sysarg
160 printf "struct thread;\n\n" > sysarg
161 printf "#define\tPAD_(t)\t(sizeof(register_t) <= sizeof(t) ? \\\n" > sysarg
162 printf "\t\t0 : sizeof(register_t) - sizeof(t))\n\n" > sysarg
163 printf "#if BYTE_ORDER == LITTLE_ENDIAN\n"> sysarg
164 printf "#define\tPADL_(t)\t0\n" > sysarg
165 printf "#define\tPADR_(t)\tPAD_(t)\n" > sysarg
166 printf "#else\n" > sysarg
167 printf "#define\tPADL_(t)\tPAD_(t)\n" > sysarg
168 printf "#define\tPADR_(t)\t0\n" > sysarg
169 printf "#endif\n\n" > sysarg
171 printf " * created from%s\n */\n\n", $0 > sysnames
172 printf "const char *%s[] = {\n", namesname > sysnames
174 printf " * created from%s\n */\n\n", $0 > syshdr
176 printf "# created from%s\nMIASM = ", $0 > sysmk
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
183 printf "static void\nsystrace_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracetmp
184 printf "\tswitch (sysnum) {\n" > systracetmp
188 NF == 0 || $1 ~ /^;/ {
191 $1 ~ /^#[ ]*include/ {
206 savesyscall = syscall
220 syscall = savesyscall
237 printf "%s: line %d: syscall number out of sync at %d\n",
243 # Returns true if the type "name" is the first flag in the type field
244 function type(name, flags, n) {
245 n = split($3, flags, /\|/)
246 return (n > 0 && flags[1] == name)
248 # Returns true if the flag "name" is set in the type field
249 function flag(name, flags, i, n) {
250 n = split($3, flags, /\|/)
251 for (i = 1; i <= n; i++)
252 if (flags[i] == name)
256 function align_sysent_comment(column) {
257 printf("\t") > sysent
258 column = column + 8 - column % 8
259 while (column < 56) {
260 printf("\t") > sysent
264 function parserr(was, wanted) {
265 printf "%s: line %d: unexpected %s (expected %s)\n",
266 infile, NR, was, wanted
269 function parseline() {
270 f=4 # toss number, type, audit event
273 thr_flag = "SY_THR_STATIC"
274 if (flag("NOTSTATIC")) {
275 thr_flag = "SY_THR_ABSENT"
291 argssize = "AS(" $6 ")"
307 f++ #function return type
312 # We now know the func name, so define a flags field for it.
313 # Do this before any other processing as we may return early
316 for (cap in capenabled) {
317 if (funcname == capenabled[cap]) {
318 flags = "SYF_CAPENABLED";
324 if (argalias == "") {
325 argalias = funcname "_args"
327 argalias = "o" argalias
329 argalias = "freebsd4_" argalias
331 argalias = "freebsd6_" argalias
333 argalias = "freebsd7_" argalias
343 parserr($f, "argument definition")
351 while (f < end && $(f+1) != ",") {
352 if (argtype[argc] != "" && oldf != "*")
353 argtype[argc] = argtype[argc]" ";
354 argtype[argc] = argtype[argc]$f;
358 if (argtype[argc] == "")
359 parserr($f, "argument definition")
361 f += 2; # skip name, and any comma
364 argssize = "AS(" argalias ")"
368 for (i = 5; i <= NF; i++)
369 comment = comment " " $i
373 # The AUE_ audit event identifier.
386 type("STD") || type("NODEF") || type("NOARGS") || type("NOPROTO") \
389 printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall) > systrace
390 printf("\t/* %s */\n\tcase %d:\n", funcname, syscall) > systracetmp
392 printf("\t\tswitch(ndx) {\n") > systracetmp
393 printf("\t\tstruct %s *p = params;\n", argalias) > systrace
394 for (i = 1; i <= argc; i++) {
396 sub("__restrict$", "", arg)
397 printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systracetmp
398 if (index(arg, "*") > 0 || arg == "caddr_t")
399 printf("\t\tuarg[%d] = (intptr_t) p->%s; /* %s */\n", \
401 argname[i], arg) > systrace
402 else if (substr(arg, 1, 1) == "u" || arg == "size_t")
403 printf("\t\tuarg[%d] = p->%s; /* %s */\n", \
405 argname[i], arg) > systrace
407 printf("\t\tiarg[%d] = p->%s; /* %s */\n", \
409 argname[i], arg) > systrace
411 printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systracetmp
413 printf("\t\t*n_args = %d;\n\t\tbreak;\n\t}\n", argc) > systrace
414 printf("\t\tbreak;\n") > systracetmp
415 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
417 printf("struct %s {\n", argalias) > sysarg
418 for (i = 1; i <= argc; i++)
419 printf("\tchar %s_l_[PADL_(%s)]; " \
420 "%s %s; char %s_r_[PADR_(%s)];\n",
421 argname[i], argtype[i],
422 argtype[i], argname[i],
423 argname[i], argtype[i]) > sysarg
424 printf("};\n") > sysarg
426 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
427 printf("struct %s {\n\tregister_t dummy;\n};\n",
429 if (!flag("NOPROTO") && !flag("NODEF")) {
430 if (funcname == "nosys" || funcname == "lkmnosys" ||
431 funcname == "sysarch" || funcname ~ /^freebsd/ ||
432 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
433 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
434 printf("%s\t%s(struct thread *, struct %s *)",
435 rettype, funcname, argalias) > sysdcl
437 printf("%s\tsys_%s(struct thread *, struct %s *)",
438 rettype, funcname, argalias) > sysdcl
440 printf(";\n") > sysdcl
441 printf("#define\t%sAUE_%s\t%s\n", syscallprefix,
442 funcalias, auditev) > sysaue
444 printf("\t{ %s, (sy_call_t *)", argssize) > sysent
445 column = 8 + 2 + length(argssize) + 15
447 printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT") > sysent
448 column = column + length("lkmressys") + length("AUE_NULL") + 3
450 if (funcname == "nosys" || funcname == "sysarch" ||
451 funcname == "lkmnosys" || funcname ~ /^freebsd/ ||
452 funcname ~ /^linux/ || funcname ~ /^svr4/ ||
453 funcname ~ /^ibcs2/ || funcname ~ /^xenix/) {
454 printf("%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
455 column = column + length(funcname) + length(auditev) + length(flags) + 3
457 printf("sys_%s, %s, NULL, 0, 0, %s, %s },", funcname, auditev, flags, thr_flag) > sysent
458 column = column + length(funcname) + length(auditev) + length(flags) + 3 + 4
461 align_sysent_comment(column)
462 printf("/* %d = %s */\n", syscall, funcalias) > sysent
463 printf("\t\"%s\",\t\t\t/* %d = %s */\n",
464 funcalias, syscall, funcalias) > sysnames
465 if (!flag("NODEF")) {
466 printf("#define\t%s%s\t%d\n", syscallprefix,
467 funcalias, syscall) > syshdr
468 printf(" \\\n\t%s.o", funcalias) > sysmk
473 type("COMPAT") || type("COMPAT4") || type("COMPAT6") || \
475 if (flag("COMPAT")) {
478 outdcl = syscompatdcl
482 } else if (flag("COMPAT4")) {
485 outdcl = syscompat4dcl
489 } else if (flag("COMPAT6")) {
492 outdcl = syscompat6dcl
496 } else if (flag("COMPAT7")) {
499 outdcl = syscompat7dcl
505 if (argc != 0 && !flag("NOARGS") && !flag("NOPROTO") && \
507 printf("struct %s {\n", argalias) > out
508 for (i = 1; i <= argc; i++)
509 printf("\tchar %s_l_[PADL_(%s)]; %s %s; " \
510 "char %s_r_[PADR_(%s)];\n",
511 argname[i], argtype[i],
512 argtype[i], argname[i],
513 argname[i], argtype[i]) > out
516 else if (!flag("NOARGS") && !flag("NOPROTO") && !flag("NODEF"))
517 printf("struct %s {\n\tregister_t dummy;\n};\n",
519 if (!flag("NOPROTO") && !flag("NODEF")) {
520 printf("%s\t%s%s(struct thread *, struct %s *);\n",
521 rettype, prefix, funcname, argalias) > outdcl
522 printf("#define\t%sAUE_%s%s\t%s\n", syscallprefix,
523 prefix, funcname, auditev) > sysaue
526 printf("\t{ %s, (sy_call_t *)%s, %s, NULL, 0, 0, 0, SY_THR_ABSENT },",
527 "0", "lkmressys", "AUE_NULL") > sysent
528 align_sysent_comment(8 + 2 + length("0") + 15 + \
529 length("lkmressys") + length("AUE_NULL") + 3)
531 printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s, %s },",
532 wrap, argssize, funcname, auditev, flags, thr_flag) > sysent
533 align_sysent_comment(8 + 9 + length(argssize) + 1 + \
534 length(funcname) + length(auditev) + \
537 printf("/* %d = %s %s */\n", syscall, descr, funcalias) > sysent
538 printf("\t\"%s.%s\",\t\t/* %d = %s %s */\n",
539 wrap, funcalias, syscall, descr, funcalias) > sysnames
540 if (flag("COMPAT")) {
541 printf("\t\t\t\t/* %d is old %s */\n",
542 syscall, funcalias) > syshdr
543 } else if (!flag("NODEF")) {
544 printf("#define\t%s%s%s\t%d\n", syscallprefix,
545 prefix, funcalias, syscall) > syshdr
546 printf(" \\\n\t%s%s.o", prefix, funcalias) > sysmk
552 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },") > sysent
553 align_sysent_comment(34)
554 printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
555 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
556 $4, syscall, comment) > sysnames
557 printf("\t\t\t\t/* %d is obsolete %s */\n",
558 syscall, comment) > syshdr
563 printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT },\t\t\t/* %d = %s */\n",
564 syscall, comment) > sysent
565 printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
566 syscall, syscall, comment) > sysnames
571 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $3
575 printf "\n#define AS(name) (sizeof(struct name) / sizeof(register_t))\n" > sysinc
577 if (ncompat != 0 || ncompat4 != 0 || ncompat6 != 0 || ncompat7 != 0)
578 printf "#include \"opt_compat.h\"\n\n" > syssw
581 printf "\n#ifdef %s\n", compat > sysinc
582 printf "#define compat(n, name) n, (sy_call_t *)__CONCAT(o,name)\n" > sysinc
583 printf "#else\n" > sysinc
584 printf "#define compat(n, name) 0, (sy_call_t *)nosys\n" > sysinc
585 printf "#endif\n" > sysinc
589 printf "\n#ifdef %s\n", compat4 > sysinc
590 printf "#define compat4(n, name) n, (sy_call_t *)__CONCAT(freebsd4_,name)\n" > sysinc
591 printf "#else\n" > sysinc
592 printf "#define compat4(n, name) 0, (sy_call_t *)nosys\n" > sysinc
593 printf "#endif\n" > sysinc
597 printf "\n#ifdef %s\n", compat6 > sysinc
598 printf "#define compat6(n, name) n, (sy_call_t *)__CONCAT(freebsd6_,name)\n" > sysinc
599 printf "#else\n" > sysinc
600 printf "#define compat6(n, name) 0, (sy_call_t *)nosys\n" > sysinc
601 printf "#endif\n" > sysinc
605 printf "\n#ifdef %s\n", compat7 > sysinc
606 printf "#define compat7(n, name) n, (sy_call_t *)__CONCAT(freebsd7_,name)\n" > sysinc
607 printf "#else\n" > sysinc
608 printf "#define compat7(n, name) 0, (sy_call_t *)nosys\n" > sysinc
609 printf "#endif\n" > sysinc
612 printf("\n#endif /* %s */\n\n", compat) > syscompatdcl
613 printf("\n#endif /* %s */\n\n", compat4) > syscompat4dcl
614 printf("\n#endif /* %s */\n\n", compat6) > syscompat6dcl
615 printf("\n#endif /* %s */\n\n", compat7) > syscompat7dcl
617 printf("\n#undef PAD_\n") > sysprotoend
618 printf("#undef PADL_\n") > sysprotoend
619 printf("#undef PADR_\n") > sysprotoend
620 printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
623 printf("};\n") > sysent
624 printf("};\n") > sysnames
625 printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall) \
627 printf "\tdefault:\n\t\t*n_args = 0;\n\t\tbreak;\n\t};\n}\n" > systrace
628 printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracetmp
631 cat $sysinc $sysent >> $syssw
632 cat $sysarg $sysdcl \
633 $syscompat $syscompatdcl \
634 $syscompat4 $syscompat4dcl \
635 $syscompat6 $syscompat6dcl \
636 $syscompat7 $syscompat7dcl \
637 $sysaue $sysprotoend > $sysproto
638 cat $systracetmp >> $systrace