make_syscall_h.sh

  1 #!/bin/sh
  2 # syscall reporting example for seccomp
  3 #
  4 # Copyright (c) 2012 The Chromium OS Authors <chromium-os-dev@chromium.org>
  5 # Authors:
  6 #  Kees Cook <keescook@chromium.org>
  7 #
  8 # Use of this source code is governed by a BSD-style license that can be
  9 # found in the LICENSE file.
 10 
 11 CC=$1
 12 [ -n "$TARGET_CC_NOCACHE" ] && CC=$TARGET_CC_NOCACHE
 13 
 14 echo "#include <asm/unistd.h>"
 15 
 16 # for loongarch __NR3264_* macros
 17 echo "#include <sys/syscall.h>" | ${CC} -E -dM - | grep '^#define __NR3264_[a-z0-9_]\+[ \t].*[0-9].*$'
 18 
 19 echo "static const char *__syscall_names[] = {"
 20 echo "#include <sys/syscall.h>" | ${CC} -E -dM - | grep '^#define __NR_[a-z0-9_]\+[ \t].*[0-9].*$' | \
 21         LC_ALL=C sed -r -n -e 's/^\#define[ \t]+__NR_([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_LSYCABE]+)(.*)/ [\2] = "\1",/p'
 22 echo "};"
 23 
 24 extra_syscalls="$(echo "#include <sys/syscall.h>" | ${CC} -E -dM - | sed -r -n -e 's/^#define __ARM_NR_([a-z0-9_]+)/\1/p')"
 25 
 26 cat <<EOF
 27 static inline const char *syscall_name(unsigned i) {
 28   if (i < ARRAY_SIZE(__syscall_names))
 29     return __syscall_names[i];
 30   switch (i) {
 31 EOF
 32 echo "$extra_syscalls" | \
 33     LC_ALL=C sed -r -n -e 's/^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_LAMBSE]+)(.*)/    case \2: return "\1";/p'
 34 cat <<EOF
 35   default: return (void*)0;
 36   }
 37 }
 38 EOF
 39 
 40 cat <<EOF
 41 static inline int syscall_index(unsigned i) {
 42   if (i < ARRAY_SIZE(__syscall_names))
 43     return i;
 44   switch (i) {
 45 EOF
 46 echo "$extra_syscalls" | \
 47     LC_ALL=C perl -ne 'print "  case $2: return ARRAY_SIZE(__syscall_names) + ", $. - 1, ";\n" if /^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_LAMBSE]+)(.*)/;'
 48 cat <<EOF
 49   default: return -1;
 50   }
 51 }
 52 EOF
 53 
 54 cat <<EOF
 55 static inline int syscall_index_to_number(unsigned i) {
 56   if (i < ARRAY_SIZE(__syscall_names))
 57     return i;
 58   switch (i) {
 59 EOF
 60 echo "$extra_syscalls" | \
 61     LC_ALL=C perl -ne 'print "  case ARRAY_SIZE(__syscall_names) + ", $. - 1, ": return $2;\n" if /^([a-z0-9_]+)[ \t]+([ ()+0-9a-zNR_LAMBSE]+)(.*)/;'
 62 cat <<EOF
 63   default: return -1;
 64   }
 65 }
 66 EOF
 67 
 68 echo "#define SYSCALL_COUNT (ARRAY_SIZE(__syscall_names) + $({ test -n "$extra_syscalls" && echo "$extra_syscalls"; } | wc -l))"
This page was automatically generated by LXR 0.3.1. • OpenWrt
OpenWrt.org Cross Reference

Sources/procd/make_syscall_h.sh
