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add an errno utility, LP: #612267

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add optimizations from Scott Moser
This commit is contained in:
Dustin Kirkland 2010-08-10 14:40:13 -04:00
parent 590901e51c
commit 99ddf5fd61
2 changed files with 17 additions and 9 deletions
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2
debian/changelog vendored
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@ -2,7 +2,7 @@ ubuntu-dev-tools (0.102) UNRELEASED; urgency=low
[ Dustin Kirkland ] [ Dustin Kirkland ]
* errno, doc/errno.1, debian/control, debian/copyright, setup.py: * errno, doc/errno.1, debian/control, debian/copyright, setup.py:
- add an errno utility, LP: #61226 - add an errno utility, LP: #612267
-- Dustin Kirkland <kirkland@ubuntu.com> Tue, 10 Aug 2010 11:41:10 -0400 -- Dustin Kirkland <kirkland@ubuntu.com> Tue, 10 Aug 2010 11:41:10 -0400

20
errno
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@ -2,8 +2,14 @@
# #
# errno - search POSIX error codes by error number, error name, # errno - search POSIX error codes by error number, error name,
# or error description # or error description
#
# Copyright (C) 2010 Dustin Kirkland <kirkland@ubuntu.com> # Copyright (C) 2010 Dustin Kirkland <kirkland@ubuntu.com>
# #
# Authors:
# Dustin Kirkland <kirkland@ubuntu.com>
# Kees Cook <kees@ubuntu.com>
# Scott Moser <smoser@ubuntu.com>
#
# This program is free software: you can redistribute it and/or modify # This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License. # the Free Software Foundation, either version 3 of the License.
@ -16,7 +22,7 @@
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>. # along with this program. If not, see <http://www.gnu.org/licenses/>.
if $(which gcc >/dev/null); then if which gcc >/dev/null; then
# Header finding trick from Kees Cook <kees@ubuntu.com> # Header finding trick from Kees Cook <kees@ubuntu.com>
headers=$(echo "#include <asm/errno.h>" | gcc -E - | grep "\.h" | awk -F\" '{print $2}' | sort -u) headers=$(echo "#include <asm/errno.h>" | gcc -E - | grep "\.h" | awk -F\" '{print $2}' | sort -u)
else else
@ -25,10 +31,12 @@ fi
code="$1" code="$1"
if echo "$code" | egrep -qs "^[0-9]+$"; then for code in "${@}"; do
if [ "$code" -le 0 -o "$code" -ge 0 ] 2>/dev/null; then
# Input is a number, search for a particular matching code # Input is a number, search for a particular matching code
egrep -h "^#define\s.*\s+$code\s+/" $headers | sed 's/^#define\s*//' sed -n "s,^#define\s\+\([^[:space:]]\+\s\+${code}\s.*\),\1,p" ${headers}
else else
# Input is not a number, search for any matching strings # Input is not a number, search for any matching strings
grep -hi "$code" $headers | sed 's/^#define\s*//' sed -n "s,^#define\s\+\(.*${code}.*\),\1,Ip" ${headers}
fi fi
done