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53 lines
2.0 KiB
Groff
53 lines
2.0 KiB
Groff
.TH CADO.CONF 5 "June 23, 2016" "VirtualSquare Labs"
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.SH NAME
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cado.conf \- Capability Ambient DO: configuration file
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.SH DESCRIPTION
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The \fB/etc/cado.conf\fR file is used to configure which ambient cabalities can be provided by \fBcado\fR to users.
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\fBcado\fR uses the capability cap_dac_read_search to access \fB/etc/cado.conf\fR, so this configuration does not
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need to be readable by users.
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All lines beginning with the sign '#' are comments.
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Non-comment lines have the following syntax
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.nf
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\fIlist_of_capabilities\fB:\fI list_of_users_and_groups\fR
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.fi
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or
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.nf
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\fIlist_of_capabilities\fB:\fI list_of_users_and_groups\fB:\fR \fIlist_of_auth_commands\fR
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.fi
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Both \fIlist_of_capabilities\fR and \fIlist_of_users_and_groups\fR are comma separated lists of identifiers.
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Items of \fIlist_of_capabilities\fR are capability names or capability masks (exadecimal numbers).
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For brevity, the \fBcap_\fR prefix of capability names can be omitted (e.g. \fBnet_admin\fR and \fBcap_net_admin\fR
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have the same meaning).
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Items of \fIlist_of_users_and_groups\fR are usernames or groupnames (groupnames must be prefexed by '@').
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\fIlist_of_auth_commands\fR is a command or a list of commands separated by semicolon (;). If present, cado runs
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all the sequence of commands it grants the capabilities as defined in the current line only if all return zero as
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their exit status.
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Example of \fBcado.conf\fR file:
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.nf
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# Capability Ambient DO configuration file
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# cado.conf
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net_admin: @netadmin,renzo: /usr/bin/logger cado net_admin $USER; /bin/echo OK
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net_admin: @privatenet: /usr/local/lib/cado_autorize_privatenet
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net_admin,net_bind_service,net_raw,net_broadcast: @vxvdex
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cap_kill: renzo
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.fi
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In this example the renzo's processes can be granted (by \fBcado\fR) cap_net_admin and cap_kill.
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cap_net_admin can be acquired by processes owned by users belonging to the netadmin group.
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Users in vxvdex can provide their processes with a subset of cap_net_admin, cap_net_bind_service, cap_net_raw and cap_net_broadcast
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.SH SEE ALSO
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\fBcado\fR(1),
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\fBcaprint\fR(1),
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\fBcapabilities\fR(7)
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