sysusers/provides: parse and output static IDs

This adds support for parsing static UIDs and GIDs from sysusers.d
fragments, and automatically forwarding them to the generated
'Provides' entries.
It will allow inspecting users/groups with static IDs directly
from package metadata:
```
$ rpm --query --provides --package gdm-41.0-3.fc36.x86_64.rpm
[...]
group(gdm) = 42
user(gdm) = 42
```
This commit is contained in:
Luca BRUNO 2021-11-16 16:36:58 +00:00
parent 2d54326a8c
commit 21ca64d8e0
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@ -1,5 +1,40 @@
#!/bin/bash
process_u() {
if [ ! -z "${2##*[!0-9]*}" ]; then
# Single shared static ID.
echo "user($1) = $2"
echo "group($1) = $2"
elif [[ $2 == *:* ]]; then
# UID:<group>.
uid=$(echo $2 | cut -d':' -f1 -)
group=$(echo $2 | cut -d':' -f2 -)
if [ ! -z "${group##*[!0-9]*}" ]; then
# UID:GID.
echo "user($1) = ${uid}"
echo "group($1) = ${group}"
else
# UID:<groupname>.
echo "user($1) = ${uid}"
echo "group(${group})"
fi
else
# Dynamic (or something else uninteresting).
echo "user($1)"
echo "group($1)"
fi
}
process_g() {
if [ ! -z "${2##*[!0-9]*}" ]; then
# Static GID.
echo "group($1) = $2"
else
# Dynamic (or something else uninteresting).
echo "group($1)"
fi
}
parse() {
while read line; do
[ "${line:0:1}" = '#' -o "${line:0:1}" = ';' ] && continue
@ -8,12 +43,10 @@ parse() {
set -- $line
case "$1" in
('u')
echo "user($2)"
echo "group($2)"
# TODO: user:group support
process_u "$2" "$3"
;;
('g')
echo "group($2)"
process_g "$2" "$3"
;;
('m')
echo "user($2)"