#!/bin/sh | |
# Create a RAM disk with same perms as mountpoint | |
# Script based on http://itux.idev.pro/2012/04/iservice-speed-up-your-xcode-%D0%BD%D0%B5%D0%BA%D0%BE%D1%82%D0%BE%D1%80%D1%8B%D0%B5-%D1%81%D0%BF%D0%BE%D1%81%D0%BE%D0%B1%D1%8B/ with some additions | |
# Usage: sudo ./xcode_ramdisk.sh start | |
USERNAME=$(logname) | |
TMP_DIR="/private/tmp" | |
RUN_DIR="/var/run" | |
SYS_CACHES_DIR="/Library/Caches" | |
USER_CACHES_DIR="$HOME/Library/Caches" | |
DEV_CACHES_DIR="$HOME/Library/Developer/Xcode/DerivedData" | |
DEV_IPHONE_DIR="$HOME/Library/Application Support/iPhone Simulator" | |
RAMDisk() { | |
mntpt="$1" | |
rdsize=$(($2*1024*1024/512)) | |
echo "Creating RamFS for $mntpt $rdsize" | |
# Create the RAM disk. | |
dev=`hdik -drivekey system-image=yes -nomount ram://$rdsize` | |
# Successfull creation... | |
if [ $? -eq 0 ] ; then | |
# Create HFS on the RAM volume. | |
newfs_hfs $dev | |
# Store permissions from old mount point. | |
eval `/usr/bin/stat -s "$mntpt"` | |
# Mount the RAM disk to the target mount point. | |
mount -t hfs -o union -o nobrowse -o nodev -o noatime $dev "$mntpt" | |
# Restore permissions like they were on old volume. | |
chown $st_uid:$st_gid "$mntpt" | |
chmod $st_mode "$mntpt" | |
fi | |
} | |
# Test for arguments. | |
if [ -z $1 ]; then | |
echo "Usage: $0 [start|stop|restart] " | |
exit 1 | |
fi | |
# Source the common setup functions for startup scripts | |
test -r /etc/rc.common || exit 1 | |
. /etc/rc.common | |
StartService () { | |
ConsoleMessage "Starting RamFS disks..." | |
RAMDisk "$TMP_DIR" 128 | |
RAMDisk "$RUN_DIR" 64 | |
RAMDisk "$SYS_CACHES_DIR" 64 | |
RAMDisk "$USER_CACHES_DIR" 1024 | |
RAMDisk "$DEV_CACHES_DIR" 1024 | |
RAMDisk "$DEV_IPHONE_DIR" 1024 | |
#RAMDisk /var/db 1024 | |
#mkdir -m 1777 /var/db/mds | |
} | |
StopService () { | |
ConsoleMessage "Stopping RamFS disks, nothing will be done here..." | |
# diskutil unmount /private/tmp /private/var/run | |
# diskutil unmount /private/var/run | |
} | |
RestartService () { | |
ConsoleMessage "Restarting RamFS disks, nothing will be done here..." | |
} | |
RunService "$1" |
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