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Revision 1.15 - (hide annotations) (download)
Fri Feb 26 18:09:43 2010 UTC (4 years, 1 month ago) by grobian
Branch: MAIN
Changes since 1.14: +7 -5 lines
add support for Interix in dlopen_lib, bug #302575

1 flameeyes 1.1 # Copyright 1999-2005 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 grobian 1.15 # $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.14 2009/10/31 15:34:59 grobian Exp $
4 flameeyes 1.1 #
5     # Author: Diego Pettenò <flameeyes@gentoo.org>
6     #
7     # This eclass is created to avoid using non-portable GNUisms inside ebuilds
8     #
9     # NB: If you add anything, please comment it!
10    
11     # treecopy orig1 orig2 orig3 .... dest
12     #
13     # mimic cp --parents copy, but working on BSD userland as well
14     treecopy() {
15     dest=${!#}
16     files_count=$#
17    
18     while(( $# > 1 )); do
19     dirstruct=$(dirname "$1")
20     mkdir -p "${dest}/${dirstruct}"
21     cp -pPR "$1" "${dest}/${dirstruct}"
22    
23     shift
24     done
25     }
26    
27     # seq min max
28     #
29     # compatibility function that mimes seq command if not available
30     seq() {
31 vapier 1.3 local p=$(type -P seq)
32 flameeyes 1.1
33     case $# in
34 vapier 1.3 1) min=1 max=$1 step=1 ;;
35     2) min=$1 max=$2 step=1 ;;
36     3) min=$1 max=$3 step=$2 ;;
37     *) die "seq called with wrong number of arguments" ;;
38 flameeyes 1.1 esac
39    
40 vapier 1.3 if [[ -z ${p} ]] ; then
41 flameeyes 1.1 local reps
42     # BSD userland
43     if [[ ${step} != 0 ]]; then
44     reps=$(( ($max-$min) / $step +1 ))
45     else
46     reps=0
47     fi
48    
49     jot $reps $min $max $step
50     else
51     "${p}" $min $step $max
52     fi
53     }
54    
55     # Gets the linker flag to link to dlopen() function
56     dlopen_lib() {
57 grobian 1.12 # - Solaris needs nothing
58     # - Darwin needs nothing
59     # - *BSD needs nothing
60 drizzt 1.13 # - Linux needs -ldl (glibc and uclibc)
61 grobian 1.15 # - Interix needs -ldl
62     case "${CHOST}" in
63     *-linux-gnu*|*-linux-uclibc|*-interix*)
64     echo "-ldl"
65     ;;
66     esac
67 flameeyes 1.1 }
68    
69 flameeyes 1.2 # Gets the home directory for the specified user
70     # it's a wrap around egetent as the position of the home directory in the line
71     # varies depending on the os used.
72     #
73     # To use that, inherit eutils, not portability!
74     egethome() {
75     ent=$(egetent passwd $1)
76    
77 flameeyes 1.5 case ${CHOST} in
78     *-darwin*|*-freebsd*|*-dragonfly*)
79     # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
80 flameeyes 1.8 echo ${ent} | cut -d: -f9
81 flameeyes 1.6 ;;
82 flameeyes 1.5 *)
83     # Linux, NetBSD and OpenBSD use position 6 instead
84 flameeyes 1.8 echo ${ent} | cut -d: -f6
85 flameeyes 1.6 ;;
86 flameeyes 1.5 esac
87 flameeyes 1.2 }
88 flameeyes 1.4
89 flameeyes 1.7 # Gets the shell for the specified user
90     # it's a wrap around egetent as the position of the home directory in the line
91     # varies depending on the os used.
92     #
93     # To use that, inherit eutils, not portability!
94     egetshell() {
95     ent=$(egetent passwd "$1")
96    
97     case ${CHOST} in
98     *-darwin*|*-freebsd*|*-dragonfly*)
99     # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
100 flameeyes 1.8 echo ${ent} | cut -d: -f10
101 flameeyes 1.7 ;;
102     *)
103     # Linux, NetBSD and OpenBSD use position 6 instead
104 flameeyes 1.8 echo ${ent} cut -d: -f7
105 flameeyes 1.7 ;;
106     esac
107     }
108    
109     # Returns true if specified user has a shell that precludes logins
110     # on whichever operating system.
111     is-login-disabled() {
112     shell=$(egetshell "$1")
113    
114     case ${shell} in
115     /bin/false|/usr/bin/false|/sbin/nologin|/usr/sbin/nologin)
116     return 0 ;;
117     *)
118     return 1 ;;
119     esac
120     }
121    
122 flameeyes 1.4 # Gets the name of the BSD-ish make command (pmake from NetBSD)
123     #
124     # This will return make (provided by system packages) for BSD userlands,
125     # or bsdmake for Darwin userlands and pmake for the rest of userlands,
126     # both of which are provided by sys-devel/pmake package.
127     #
128     # Note: the bsdmake for Darwin userland is with compatibility with MacOSX
129     # default name.
130     get_bmake() {
131     if [[ ${USERLAND} == *BSD ]]; then
132     echo make
133     elif [[ ${USERLAND} == "Darwin" ]]; then
134     echo bsdmake
135     else
136     echo pmake
137     fi
138     }
139 uberlord 1.9
140     # Portable method of getting mount names and points.
141 uberlord 1.10 # Returns as "point node fs options"
142 uberlord 1.9 # Remember to convert 040 back to a space.
143     get_mounts() {
144 uberlord 1.10 local point= node= fs= opts= foo=
145 uberlord 1.9
146     # Linux has /proc/mounts which should always exist
147     if [[ $(uname -s) == "Linux" ]] ; then
148 uberlord 1.10 while read node point fs opts foo ; do
149 swegener 1.11 echo "${point} ${node} ${fs} ${opts}"
150 uberlord 1.9 done < /proc/mounts
151 swegener 1.11 return
152 uberlord 1.9 fi
153    
154     # OK, pray we have a -p option that outputs mounts in fstab format
155     # using tabs as the seperator.
156     # Then pray that there are no tabs in the either.
157     # Currently only FreeBSD supports this and the other BSDs will
158     # have to be patched.
159     # Athough the BSD's may support /proc, they do NOT put \040 in place
160     # of the spaces and we should not force a /proc either.
161     local IFS=$'\t'
162     LC_ALL=C mount -p | while read node point fs foo ; do
163 uberlord 1.10 opts=${fs#* }
164     fs=${fs%% *}
165     echo "${point// /\040} ${node// /\040} ${fs%% *} ${opts// /\040}"
166 uberlord 1.9 done
167     }

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