freload() { while (( $# )); do; unfunction $1; autoload -U $1; shift; done }
compdef _functions freload
-#f1# List symlinks in detail (more detailed version of 'readlink -f' and 'whence -s')
+#
+# Usage:
+#
+# e.g.: a -> b -> c -> d ....
+#
+# sll a
+#
+#
+# if parameter is given with leading '=', lookup $PATH for parameter and resolve that
+#
+# sll =java
+#
+# Note: limit for recursive symlinks on linux:
+# http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/fs/namei.c?id=refs/heads/master#l808
+# This limits recursive symlink follows to 8,
+# while limiting consecutive symlinks to 40.
+#
+# When resolving and displaying information about symlinks, no check is made
+# that the displayed information does make any sense on your OS.
+# We leave that decission to the user.
+#
+# The zstat module is used to detect symlink loops. zstat is available since zsh4.
+# With an older zsh you will need to abort with <C-c> in that case.
+# When a symlink loop is detected, a warning ist printed and further processing is stopped.
+#
+# Module zstat is loaded by default in grml zshrc, no extra action needed for that.
+#
+# Known bugs:
+# If you happen to come accross a symlink that points to a destination on an other partition
+# with the same inode number, that will be marked as symlink loop though it is not.
+# Two hints for this situation:
+# I) Play lottery the same day, as you seem to be rather lucky right now.
+# II) Send patches.
+#
+# return status:
+# 0 upon success
+# 1 file/dir not accesible
+# 2 symlink loop detected
+#
+#f1# List symlinks in detail (more detailed version of 'readlink -f', 'whence -s' and 'namei -l')
sll() {
- [[ -z "$1" ]] && printf 'Usage: %s <file(s)>\n' "$0" && return 1
- local file
- for file in "$@" ; do
+ if [[ -z ${1} ]] ; then
+ printf 'Usage: %s <symlink(s)>\n' "${0}"
+ return 1
+ fi
+
+ local file jumpd curdir
+ local -i RTN LINODE i
+ local -a SEENINODES
+ curdir="${PWD}"
+ RTN=0
+
+ for file in "${@}" ; do
+ SEENINODES=()
+ ls -l "${file:a}" || RTN=1
+
while [[ -h "$file" ]] ; do
- ls -l $file
+ if is4 ; then
+ LINODE=$(zstat -L +inode "${file}")
+ for i in ${SEENINODES} ; do
+ if (( ${i} == ${LINODE} )) ; then
+ builtin cd "${curdir}"
+ print "link loop detected, aborting!"
+ return 2
+ fi
+ done
+ SEENINODES+=${LINODE}
+ fi
+ jumpd="${file:h}"
+ file="${file:t}"
+
+ if [[ -d ${jumpd} ]] ; then
+ builtin cd "${jumpd}" || RTN=1
+ fi
file=$(readlink "$file")
+
+ jumpd="${file:h}"
+ file="${file:t}"
+
+ if [[ -d ${jumpd} ]] ; then
+ builtin cd "${jumpd}" || RTN=1
+ fi
+
+ ls -l "${PWD}/${file}" || RTN=1
done
+ shift 1
+ if (( ${#} >= 1 )) ; then
+ print ""
+ fi
+ builtin cd "${curdir}"
done
+ return ${RTN}
}
# TODO: Is it supported to use pager settings like this?