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kill syscall check uid

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This commit is contained in:
Tomoki Shirasawa
2015-03-17 15:04:36 +09:00
parent ed6d94a358
commit 8934eb91a4
9 changed files with 123 additions and 2 deletions
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3
arch/x86/kernel/include/syscall_list.h
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@@ -61,11 +61,14 @@ SYSCALL_HANDLED(97, getrlimit)
SYSCALL_HANDLED(101, ptrace)
SYSCALL_DELEGATED(102, getuid)
SYSCALL_DELEGATED(104, getgid)
SYSCALL_HANDLED(105, setuid)
SYSCALL_DELEGATED(107, geteuid)
SYSCALL_DELEGATED(108, getegid)
SYSCALL_HANDLED(109, setpgid)
SYSCALL_HANDLED(110, getppid)
SYSCALL_DELEGATED(111, getpgrp)
SYSCALL_HANDLED(113, setreuid)
SYSCALL_HANDLED(117, setresuid)
SYSCALL_HANDLED(127, rt_sigpending)
SYSCALL_HANDLED(128, rt_sigtimedwait)
SYSCALL_HANDLED(129, rt_sigqueueinfo)

11
arch/x86/kernel/syscall.c
View File

@@ -932,6 +932,17 @@ do_kill(int pid, int tid, int sig, siginfo_t *info, int ptracecont)
return 0;
}
if(sig != SIGCONT &&
proc->ftn->euid != 0 &&
proc->ftn->ruid != tproc->ftn->ruid &&
proc->ftn->euid != tproc->ftn->ruid &&
proc->ftn->ruid != tproc->ftn->suid &&
proc->ftn->euid != tproc->ftn->suid){
ihk_mc_spinlock_unlock_noirq(savelock);
cpu_restore_interrupt(irqstate);
return -EPERM;
}
doint = 0;
if(tid == -1){
ihk_mc_spinlock_lock_noirq(&tproc->sigshared->lock);