-
-
Notifications
You must be signed in to change notification settings - Fork 87
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
added automatic temporary swap file usage
- Loading branch information
Showing
6 changed files
with
261 additions
and
15 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| #!/bin/bash | ||
|
|
||
| # Sets up sudo permissions for the shaketune module to allow | ||
| # the user to create and delete a swap file without requiring a password | ||
|
|
||
|
|
||
| set -e | ||
|
|
||
| SUDOERS_DIR='/etc/sudoers.d' | ||
| SUDOERS_FILE='020-sudo-for-shaketune' | ||
| NEW_GROUP='shaketunesudo' | ||
|
|
||
|
|
||
| verify_ready() { | ||
| if [ "$EUID" -eq 0 ]; then | ||
| echo "This script must not run as root" | ||
| exit -1 | ||
| fi | ||
| } | ||
|
|
||
| create_sudoers_file() { | ||
| SCRIPT_TEMP_PATH=/tmp | ||
|
|
||
| echo "Creating ${SUDOERS_FILE} ..." | ||
| sudo rm -f $SCRIPT_TEMP_PATH/$SUDOERS_FILE | ||
| sudo tee $SCRIPT_TEMP_PATH/$SUDOERS_FILE > /dev/null << EOF | ||
| Cmnd_Alias SWAP_CREATE = /usr/bin/fallocate -l * /home/*/shaketune_swap, /bin/dd if=/dev/zero of=/home/*/shaketune_swap bs=* count=* | ||
| Cmnd_Alias SWAP_SETUP = /sbin/mkswap /home/*/shaketune_swap, /sbin/swapon /home/*/shaketune_swap | ||
| Cmnd_Alias SWAP_REMOVE = /sbin/swapoff /home/*/shaketune_swap, /bin/rm /home/*/shaketune_swap | ||
| %${NEW_GROUP} ALL=(root) NOPASSWD: SWAP_CREATE, SWAP_SETUP, SWAP_REMOVE | ||
| EOF | ||
| } | ||
|
|
||
| verify_syntax() { | ||
| if command -v visudo &> /dev/null; then | ||
| echo "Verifying syntax of ${SUDOERS_FILE}..." | ||
| if sudo visudo -cf $SCRIPT_TEMP_PATH/$SUDOERS_FILE; then | ||
| VERIFY_STATUS=0 | ||
| echo "Syntax OK" | ||
| else | ||
| echo "Syntax Error: Check file at $SCRIPT_TEMP_PATH/$SUDOERS_FILE" | ||
| exit 1 | ||
| fi | ||
| else | ||
| VERIFY_STATUS=0 | ||
| echo "Command 'visudo' not found. Skipping syntax verification." | ||
| fi | ||
| } | ||
|
|
||
| install_sudoers_file() { | ||
| verify_syntax | ||
| if [ $VERIFY_STATUS -eq 0 ]; then | ||
| echo "Installing sudoers file..." | ||
| sudo chmod 0440 $SCRIPT_TEMP_PATH/$SUDOERS_FILE | ||
| sudo cp $SCRIPT_TEMP_PATH/$SUDOERS_FILE $SUDOERS_DIR/$SUDOERS_FILE | ||
| else | ||
| exit 1 | ||
| fi | ||
| } | ||
|
|
||
| add_new_group() { | ||
| if ! getent group $NEW_GROUP &> /dev/null; then | ||
| echo "Creating group ${NEW_GROUP}..." | ||
| sudo groupadd --system $NEW_GROUP | ||
| else | ||
| echo "Group ${NEW_GROUP} already exists." | ||
| fi | ||
| } | ||
|
|
||
| add_user_to_group() { | ||
| if groups $USER | grep -qw $NEW_GROUP; then | ||
| echo "User ${USER} is already in group ${NEW_GROUP}." | ||
| else | ||
| echo "Adding user ${USER} to group ${NEW_GROUP}..." | ||
| sudo usermod -aG $NEW_GROUP $USER | ||
| fi | ||
| } | ||
|
|
||
| clean_temp() { | ||
| sudo rm -f $SCRIPT_TEMP_PATH/$SUDOERS_FILE | ||
| } | ||
|
|
||
|
|
||
| # Run steps | ||
| verify_ready | ||
| create_sudoers_file | ||
| install_sudoers_file | ||
| add_new_group | ||
| add_user_to_group | ||
| clean_temp | ||
|
|
||
| exit 0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.