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Revision 1.10 - (hide annotations) (download)
Fri Nov 10 15:56:59 2006 UTC (7 years, 9 months ago) by uberlord
Branch: MAIN
Changes since 1.9: +8 -6 lines
get_mounts now returns mount options too

1 flameeyes 1.1 # Copyright 1999-2005 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 uberlord 1.10 # $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.9 2006/11/06 13:55:04 uberlord Exp $
4 flameeyes 1.1 #
5     # Author: Diego PettenĂ² <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     if [[ ${ELIBC} != *BSD ]]; then
58     echo "-ldl"
59     fi
60     }
61    
62 flameeyes 1.2 # Gets the home directory for the specified user
63     # it's a wrap around egetent as the position of the home directory in the line
64     # varies depending on the os used.
65     #
66     # To use that, inherit eutils, not portability!
67     egethome() {
68     ent=$(egetent passwd $1)
69    
70 flameeyes 1.5 case ${CHOST} in
71     *-darwin*|*-freebsd*|*-dragonfly*)
72     # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
73 flameeyes 1.8 echo ${ent} | cut -d: -f9
74 flameeyes 1.6 ;;
75 flameeyes 1.5 *)
76     # Linux, NetBSD and OpenBSD use position 6 instead
77 flameeyes 1.8 echo ${ent} | cut -d: -f6
78 flameeyes 1.6 ;;
79 flameeyes 1.5 esac
80 flameeyes 1.2 }
81 flameeyes 1.4
82 flameeyes 1.7 # Gets the shell for the specified user
83     # it's a wrap around egetent as the position of the home directory in the line
84     # varies depending on the os used.
85     #
86     # To use that, inherit eutils, not portability!
87     egetshell() {
88     ent=$(egetent passwd "$1")
89    
90     case ${CHOST} in
91     *-darwin*|*-freebsd*|*-dragonfly*)
92     # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
93 flameeyes 1.8 echo ${ent} | cut -d: -f10
94 flameeyes 1.7 ;;
95     *)
96     # Linux, NetBSD and OpenBSD use position 6 instead
97 flameeyes 1.8 echo ${ent} cut -d: -f7
98 flameeyes 1.7 ;;
99     esac
100     }
101    
102     # Returns true if specified user has a shell that precludes logins
103     # on whichever operating system.
104     is-login-disabled() {
105     shell=$(egetshell "$1")
106    
107     case ${shell} in
108     /bin/false|/usr/bin/false|/sbin/nologin|/usr/sbin/nologin)
109     return 0 ;;
110     *)
111     return 1 ;;
112     esac
113     }
114    
115 flameeyes 1.4 # Gets the name of the BSD-ish make command (pmake from NetBSD)
116     #
117     # This will return make (provided by system packages) for BSD userlands,
118     # or bsdmake for Darwin userlands and pmake for the rest of userlands,
119     # both of which are provided by sys-devel/pmake package.
120     #
121     # Note: the bsdmake for Darwin userland is with compatibility with MacOSX
122     # default name.
123     get_bmake() {
124     if [[ ${USERLAND} == *BSD ]]; then
125     echo make
126     elif [[ ${USERLAND} == "Darwin" ]]; then
127     echo bsdmake
128     else
129     echo pmake
130     fi
131     }
132 uberlord 1.9
133     # Portable method of getting mount names and points.
134 uberlord 1.10 # Returns as "point node fs options"
135 uberlord 1.9 # Remember to convert 040 back to a space.
136     get_mounts() {
137 uberlord 1.10 local point= node= fs= opts= foo=
138 uberlord 1.9
139     # Linux has /proc/mounts which should always exist
140     if [[ $(uname -s) == "Linux" ]] ; then
141 uberlord 1.10 while read node point fs opts foo ; do
142     echo "${point} ${node} ${fs} ${opts}"
143 uberlord 1.9 done < /proc/mounts
144     return
145     fi
146    
147     # OK, pray we have a -p option that outputs mounts in fstab format
148     # using tabs as the seperator.
149     # Then pray that there are no tabs in the either.
150     # Currently only FreeBSD supports this and the other BSDs will
151     # have to be patched.
152     # Athough the BSD's may support /proc, they do NOT put \040 in place
153     # of the spaces and we should not force a /proc either.
154     local IFS=$'\t'
155     LC_ALL=C mount -p | while read node point fs foo ; do
156 uberlord 1.10 opts=${fs#* }
157     fs=${fs%% *}
158     echo "${point// /\040} ${node// /\040} ${fs%% *} ${opts// /\040}"
159 uberlord 1.9 done
160     }

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