Clayton CraftandDylan Van Assche
5971d0f226
MTP transfers write files to the home folder of the user. If no GID and UID are specified, uMTP-responder will use the GID/UID under which it is running at the time of the file transfer. This causes users to not be able to access the files on the device after transfering. This patch adds a systemd generator that: 1) reads /etc/default_user, and appends config to /etc/umtprd/umtprd.conf to set the MTP default user/group. If this file doesn't exist, 10000:10000 is the fallback uid:gid. 2) installs this config to /run/umtprd/umptrd.conf 3) adds a unit override to /run for umtprd.service that runs the daemon with this modified config The generator is used instead of hardcoding a uid and gid in umtprd.conf so that this can support immutable installs or situations where the default UID/GID is not 10000. Co-authored-by: Dylan Van Assche <dylan@postmarketos.org> Signed-off-by: Clayton Craft <craftyguy@postmarketos.org> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7658>
40 lines
886 B
Bash
40 lines
886 B
Bash
#!/bin/sh
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# systemd generator for uMTP-Responder configuration
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# Generates config with user UID/GID in /run
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set -e
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late_dir="$3"
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# fallback UID/GID
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uid=10000
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gid=10000
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user_file="/etc/default_user"
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if [ -f "$user_file" ]; then
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user=$(cat "$user_file")
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if [ -n "$user" ]; then
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# Get UID/GID, fall back to defaults on failure
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uid=$(id -u "$user" 2>/dev/null || echo 10000)
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gid=$(id -g "$user" 2>/dev/null || echo 10000)
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fi
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fi
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mkdir -p /run/umtprd
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cat /etc/umtprd/umtprd.conf > /run/umtprd/umtprd.conf
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cat << EOF >> /run/umtprd/umtprd.conf
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# GID/UID for file operations (generated)
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default_uid $uid
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default_gid $gid
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EOF
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# unit override to use generated config
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mkdir -p "${late_dir}/umtprd.service.d"
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cat << EOF > "${late_dir}/umtprd.service.d/10-config-path.conf"
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[Service]
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ExecStart=
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ExecStart=/usr/bin/umtprd -conf /run/umtprd/umtprd.conf
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EOF
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