diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
| commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
| tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /arch/x86/kernel/ioport.c | |
| parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) | |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'arch/x86/kernel/ioport.c')
| -rw-r--r-- | arch/x86/kernel/ioport.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c index 37dae792d..816f81544 100644 --- a/arch/x86/kernel/ioport.c +++ b/arch/x86/kernel/ioport.c @@ -28,8 +28,18 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) if ((from + num <= from) || (from + num > IO_BITMAP_BITS)) return -EINVAL; +#ifdef CONFIG_SCHED_BFS_AUTOISO + if (turn_on) { + struct sched_param param = { .sched_priority = 0 }; + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + /* Start X as SCHED_ISO */ + sched_setscheduler_nocheck(current, SCHED_ISO, ¶m); + } +#else if (turn_on && !capable(CAP_SYS_RAWIO)) return -EPERM; +#endif /* * If it's the first ioperm() call in this thread's lifetime, set the @@ -103,8 +113,15 @@ SYSCALL_DEFINE1(iopl, unsigned int, level) return -EINVAL; /* Trying to gain more privileges? */ if (level > old) { +#ifdef CONFIG_SCHED_BFS_AUTOISO + struct sched_param param = { .sched_priority = 0 }; +#endif if (!capable(CAP_SYS_RAWIO)) return -EPERM; +#ifdef CONFIG_SCHED_BFS_AUTOISO + /* Start X as SCHED_ISO */ + sched_setscheduler_nocheck(current, SCHED_ISO, ¶m); +#endif } regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12); t->iopl = level << 12; |