Skip to content

Support installation via $E9_HOME #1

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Support installation via $E9_HOME #1

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions .gitignore
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
e9compile.sh
e9patch*
e9tool
stdlib.c
7 changes: 6 additions & 1 deletion README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,12 +7,17 @@ rewrite `libc.so` into a new version with all system calls intercepted.
Unlike other interception tools, E9Syscall does not rely on `ptrace` or
signal handlers (`SIGTRAP`).

## Build
## Build & Install

To build E9Syscall, simply run the `build.sh` script:

$ ./build.sh

To install E9Syscall:

$ export PATH=${PATH}:/path/to/e9syscall
$ export E9_HOME=/path/to/e9syscall

## Usage

To use E9Syscall:
Expand Down
10 changes: 5 additions & 5 deletions e9syscall
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -68,20 +68,20 @@ HOOKNAME=`basename "$HOOK" .c`
set -e

# STEP (1): check if e9patch is installed:
if [ ! -x ./e9patch ]
if [ ! -x ${E9_HOME:-.}/e9patch ]
then
echo -e "${RED}error${OFF}: e9patch is not installed (run ./build.sh first) " >&2
echo -e "${RED}error${OFF}: e9patch is not installed (run ${E9_HOME:-.}/build.sh first) " >&2
fi

# STEP (2): build the hook code:
echo -e "${GREEN}$0${OFF}: building hook ($HOOK)..."
./e9compile.sh e9syscall-rt.c -O2 -Werror -include "$HOOK" -I "$PWD"
${E9_HOME:-.}/e9compile.sh ${E9_HOME:-.}/e9syscall-rt.c -O2 -Werror -include "$HOOK" -I "$PWD" -I${E9_HOME:-.}
mv e9syscall-rt "e9syscall_hook_$HOOKNAME"

# STEP (3): patch libc:
echo -e "${GREEN}$0${OFF}: patching libc ($LIBC)..."
echo "./e9tool --match 'asm=syscall' --action 'call[conditional] intercept(&rax,rdi,rsi,rdx,r10,r8,r9)@'"e9syscall_hook_$HOOKNAME" "$LIBC" -o "libc-$HOOKNAME.so""
./e9tool \
echo "${E9_HOME:-.}/e9tool --match 'asm=syscall' --action 'call[conditional] intercept(&rax,rdi,rsi,rdx,r10,r8,r9)@'"e9syscall_hook_$HOOKNAME" "$LIBC" -o "libc-$HOOKNAME.so""
${E9_HOME:-.}/e9tool \
--match 'asm=syscall' \
--action 'call[conditional] intercept(&rax,rdi,rsi,rdx,r10,r8,r9)@'"e9syscall_hook_$HOOKNAME" \
"$LIBC" -o "libc-$HOOKNAME.so" | tee "e9patch-$HOOKNAME.log"
Expand Down