dangling-symlink

来自「实战Linux编程的原代码,希望对学驱动的人能有所帮助」· 代码 · 共 40 行

#!/bin/sh
# Make sure touch can create a file through a dangling symlink.
# This was broken in the 4.0[e-i] test releases.

if test "$VERBOSE" = yes; then
  set -x
  touch --version
fi

rm -f touch-target t-symlink
ln -s touch-target t-symlink
fail=0

# This used to infloop.
touch t-symlink || fail=1

test -f touch-target || fail=1
rm -f touch-target t-symlink

if test $fail = 1; then
  case $host_triplet in
    *linux-gnu*)
      case "`uname -r`" in
        2.3.9[0-9]*)
	  cat 1>&2 <<EOF
====================================================
$0: WARNING!!!
This version of the Linux kernel causes touch to fail
when operating on dangling symlinks.
====================================================
EOF
	  exit 77
	  ;;
      esac
      ;;
  esac
fi

exit $fail