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https://github.com/cimryan/teslausb.git
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38 lines
1.2 KiB
Bash
38 lines
1.2 KiB
Bash
#!/bin/bash -eu
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CAM_PERCENT="$1"
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BACKINGFILES_MOUNTPOINT="$2"
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G_MASS_STORAGE_CONF_FILE_NAME=/etc/modprobe.d/g_mass_storage.conf
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function add_drive () {
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local name="$1"
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local label="$2"
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local size="$3"
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local filename="$4"
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fallocate -l "$size"K "$filename"
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mkfs.vfat "$filename" -F 32 -n "$label"
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local mountpoint=/mnt/"$name"
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mkdir "$mountpoint"
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echo "$filename $mountpoint vfat noauto,users,umask=000 0 0" >> /etc/fstab
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}
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FREE_1K_BLOCKS="$(df --output=avail --block-size=1K /backingfiles/ | tail -n 1)"
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CAM_DISK_SIZE="$(( $FREE_1K_BLOCKS * $CAM_PERCENT / 100 ))"
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CAM_DISK_FILE_NAME="$BACKINGFILES_MOUNTPOINT/cam_disk.bin"
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add_drive "cam" "CAM" "$CAM_DISK_SIZE" "$CAM_DISK_FILE_NAME"
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if [ "$CAM_PERCENT" -lt 100 ]
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then
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MUSIC_DISK_SIZE="$(df --output=avail --block-size=1K /backingfiles/ | tail -n 1)"
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MUSIC_DISK_FILE_NAME="$BACKINGFILES_MOUNTPOINT/music_disk.bin"
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add_drive "music" "MUSIC" "$MUSIC_DISK_SIZE" "$MUSIC_DISK_FILE_NAME"
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echo "options g_mass_storage file=$CAM_DISK_FILE_NAME,$MUSIC_DISK_FILE_NAME removable=1,1 ro=0,0 stall=0 iSerialNumber=123456" > G_MASS_STORAGE_CONF_FILE_NAME
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else
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echo "options g_mass_storage file=$CAM_DISK_FILE_NAME removable=1 ro=0 stall=0 iSerialNumber=123456" > G_MASS_STORAGE_CONF_FILE_NAME
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fi
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