system call

  1. R

    Other How is the UNIX Calling Convention faster than Microsoft® convention?

    I was reading thought the System calls section in the Developers Handbook and at the chapter A.3.3, it is mentioned that the preferred calling convention should be the UNIX calling convention for a number of reasons (except you need Linux compatibility). The thing that interested me a lot was...
  2. A

    Solved W++SF

    Hypothetically speaking, what do you think of WSF i.e. Windows Subsystem for FreeBSD? Any justification or possibility? Something similar to WSL 2, with full kernel, man -S 2 compatibility and BSD toolchain (not GPL licensed) especially Clang. P.S. There are two types of questions: questions and...
    • a6h
    • Thread
    • compatibility system call toolchain virtual machine windows wsl
    • Replies: 34
    • Forum: Off-Topic
  3. pcoppock1

    Solved Can't `write` another logged in user

    root@host0:~ # who user1 pts/0 Sep 18 13:08 (1.2.3.4) user2 pts/1 Sep 18 13:09 (1.2.3.5) root@host0:~ # write user2 write: user2 is not logged in The truss follows: root@host0:~ # truss write user2 mmap(0x0,131072,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0)...
    • pcoppock1
    • Thread
    • capability mode capsicum open system call truss write
    • Replies: 11
    • Forum: General
  4. S

    Add a new system call at FreeBSD-11 for calculating sum of two values

    Hello, I am a beginner in FreeBSD. I installed FreeBSD-11.0-RELEASE-amd64 on VM. I want to add first new system call that it is for calculating sum of two values. I read a sample in https://www.nostarch.com/rootkits.htm. struct sc_example_args { char *str; }; static int sc_example(struct thread...
  5. S

    A simple new system call in FreeBSD-11.0-RELEASE-amd64

    I am a newbie in FreeBSD. I installed FreeBSD-11.0-RELEASE-amd64 on VM. I want to add first new system call. I find this link. I Did: cd /usr/src/sys/kern ee mykern.c #include <sys/sysproto.h> #include <sys/proc.h> #include <sys/types.h> #include <sys/systm.h> #ifndef _SYS_SYSPROTO_H_...
  6. S

    A simple new system call

    Hello, I am a newbie in FreeBSD. I installed FreeBSD-11.0-RELEASE-amd64 on VMware. I want to add first new system call. I find this link: http://beefchunk.com/documentation/sys-programming/os-freebsd/addsystemcall.html and: http://crypto.ee.ntu.edu.tw/~thyeh/html/syscall.html They are a little...
  7. U

    Using signal in kill method

    0 down vote favorite I want to write a system call for FreeBSD kernel which get a PID and do depth-first-search on its child then return all of the PIDs. I'v read about load kernel module and I understand how to right them.(ref to this link) and I understand that kill method is the useful...
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