diff options
Diffstat (limited to 'src/c_bsdsetsid.S')
| -rw-r--r-- | src/c_bsdsetsid.S | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/src/c_bsdsetsid.S b/src/c_bsdsetsid.S index b0027f9..7e1c6ae 100644 --- a/src/c_bsdsetsid.S +++ b/src/c_bsdsetsid.S @@ -45,6 +45,9 @@ * This is the entrypoint of the program. */ +.data +status: .space 4, 0x0 + .text .globl main @@ -53,42 +56,44 @@ main: jle e_noarg xor %rax, %rax movb $0x2, %al + push %rdi + push %rsi + push %rdx syscall - jc e_fork - cmp $0x0, %rax - je c_child + test %rax, %rax + js e_fork + jz c_child c_parent: mov %rax, %rdi -# xor %r8, %r8 -# lea (%r8), %rsi + lea status, %rsi mov $0x0, %rdx mov $0x0, %rcx xor %rax, %rax movb $0x7, %al /* SYS_wait4 */ syscall - xor %rdi, %rdi - movb %al, %dil + lea (%rsi), %rdi movb $0x7, %al xor %rax, %rax movb $0x1, %al /* SYS_exit */ syscall c_child: -# xor %rax, %rax -# movb $0x93, %al /* SYS_setsid */ -# syscall -# jc e_setsid xor %rax, %rax - push %rsi + movb $0x93, %al /* SYS_setsid */ + syscall + jc e_setsid + xor %rax, %rax + pop %rdx + pop %rsi + pop %rdi mov $0x1, %rcx mov (%rsi, %rcx, 8), %rdi lea 0(%rsi, %rcx, 8), %rsi movb $0x3b, %al /* SYS_execve */ syscall jc e_execve - pop %rsi jmp c_exit c_exit: |