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Still cant write to /System/Library/CoreService although my app is root

Answer 1

A:

Have you checked the flags for that directory? Maybe it's set as "system immutable". Take a look at the chflags command to learn more about file's flags.

Macmade 2010-07-11 08:57:06

You mean my apps flag?? or the /System/Library/CoreService/Someplist.plist files flag??

raziiq 2010-07-11 09:01:31

No, I mean the flags of the directory you want to write in.

Macmade 2010-07-11 09:12:11

thanks for guiding, and can you please explain how to check those flags, i mean what flags can prevent writing to that directory?

raziiq 2010-07-11 09:18:38

@raziiq, looks useful: http://www.unix.com/man-page/OSX/1/chflags/

sarnold 2010-07-11 09:34:19

The simmutable flag can prevent root to write. You can check with 'ls -lO'

Macmade 2010-07-11 09:34:21

thank you guys. I just checked chflags command in my iPhone and it says, command not found :O , why is that??

raziiq 2010-07-11 09:41:21

Answer 2

+1 A:

Alright, got this working, you got to have root access with admin as group and SetUID flag should be set to write to that specific location. What i did is, i saw the directory structure of Cydia.app and compiled my app according to that(e.g. Cydia and Cydia_).

Rename your app name to YourApp_ and make a new file named YourApp and post the text below into it, set the proper permissions and you are good to go.

#!/bin/bash
C=/${0}
C=${C%/*}
declare -a flags
exec "${C:-.}"/MyApp_"${flags[@]}" -- "$@" 2>>/tmp/MyApp.log`

BTW YourApp binary should have a permission of 4755 to setuid flag as well.

raziiq 2010-07-22 02:30:48

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Still cant write to /System/Library/CoreService although my app is root

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