blob: 04bc539a1099fdcfcc26dfb7bc14366f27ad5904 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
#!/usr/bin/env bash
set -eu
set -o pipefail
readonly SERVICE_SRC=/lib/systemd/system/nix-daemon.service
readonly SERVICE_DEST=/etc/systemd/system/nix-daemon.service
readonly SOCKET_SRC=/lib/systemd/system/nix-daemon.socket
readonly SOCKET_DEST=/etc/systemd/system/nix-daemon.socket
poly_validate_assumptions() {
if [ "$(uname -s)" != "Linux" ]; then
failure "This script is for use with Linux!"
fi
}
poly_service_installed_check() {
[ "$(systemctl is-enabled nix-daemon.service)" = "linked" ] \
|| [ "$(systemctl is-enabled nix-daemon.socket)" = "enabled" ]
}
poly_service_uninstall_directions() {
cat <<EOF
$1. Delete the systemd service and socket units
sudo systemctl stop nix-daemon.socket
sudo systemctl stop nix-daemon.service
sudo systemctl disable nix-daemon.socket
sudo systemctl disable nix-daemon.service
sudo systemctl daemon-reload
EOF
}
poly_service_setup_note() {
cat <<EOF
- load and start a service (at $SERVICE_DEST
and $SOCKET_DEST) for nix-daemon
EOF
}
poly_configure_nix_daemon_service() {
_sudo "to set up the nix-daemon service" \
systemctl link "/nix/var/nix/profiles/default$SERVICE_SRC"
_sudo "to set up the nix-daemon socket service" \
systemctl enable "/nix/var/nix/profiles/default$SOCKET_SRC"
_sudo "to load the systemd unit for nix-daemon" \
systemctl daemon-reload
_sudo "to start the nix-daemon.socket" \
systemctl start nix-daemon.socket
_sudo "to start the nix-daemon.service" \
systemctl start nix-daemon.service
}
poly_group_exists() {
getent group "$1" > /dev/null 2>&1
}
poly_group_id_get() {
getent group "$1" | cut -d: -f3
}
poly_create_build_group() {
_sudo "Create the Nix build group, $NIX_BUILD_GROUP_NAME" \
groupadd -g "$NIX_BUILD_GROUP_ID" --system \
"$NIX_BUILD_GROUP_NAME" >&2
}
poly_user_exists() {
getent passwd "$1" > /dev/null 2>&1
}
poly_user_id_get() {
getent passwd "$1" | cut -d: -f3
}
poly_user_hidden_get() {
echo "1"
}
poly_user_hidden_set() {
true
}
poly_user_home_get() {
getent passwd "$1" | cut -d: -f6
}
poly_user_home_set() {
_sudo "in order to give $1 a safe home directory" \
usermod --home "$2" "$1"
}
poly_user_note_get() {
getent passwd "$1" | cut -d: -f5
}
poly_user_note_set() {
_sudo "in order to give $1 a useful comment" \
usermod --comment "$2" "$1"
}
poly_user_shell_get() {
getent passwd "$1" | cut -d: -f7
}
poly_user_shell_set() {
_sudo "in order to prevent $1 from logging in" \
usermod --shell "$2" "$1"
}
poly_user_in_group_check() {
groups "$1" | grep -q "$2" > /dev/null 2>&1
}
poly_user_in_group_set() {
_sudo "Add $1 to the $2 group"\
usermod --append --groups "$2" "$1"
}
poly_user_primary_group_get() {
getent passwd "$1" | cut -d: -f4
}
poly_user_primary_group_set() {
_sudo "to let the nix daemon use this user for builds (this might seem redundant, but there are two concepts of group membership)" \
usermod --gid "$2" "$1"
}
poly_create_build_user() {
username=$1
uid=$2
builder_num=$3
_sudo "Creating the Nix build user, $username" \
useradd \
--home-dir /var/empty \
--comment "Nix build user $builder_num" \
--gid "$NIX_BUILD_GROUP_ID" \
--groups "$NIX_BUILD_GROUP_NAME" \
--no-user-group \
--system \
--shell /sbin/nologin \
--uid "$uid" \
--password "!" \
"$username"
}
|
