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SECCOMP for MIPS.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-03-18 17:36:42 +00:00
parent 53de0d471f
commit 127c6f6623
2 changed files with 23 additions and 4 deletions
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17
arch/mips/Kconfig
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@ -1530,6 +1530,23 @@ config BINFMT_ELF32
bool
default y if MIPS32_O32 || MIPS32_N32
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS && BROKEN
default y
help
This kernel feature is useful for number crunching applications
that may need to compute untrusted bytecode during their
execution. By using pipes or other transports made available to
the process as file descriptors supporting the read/write
syscalls, it's possible to isolate those applications in
their own address space using seccomp. Once seccomp is
enabled via /proc/<pid>/seccomp, it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
If unsure, say Y. Only embedded should say N here.
config PM
bool "Power Management support (EXPERIMENTAL)"
depends on EXPERIMENTAL && MACH_AU1X00

10
include/asm-mips/thread_info.h
View file

@ -114,6 +114,7 @@ register struct thread_info *__current_thread_info __asm__("$28");
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */
#define TIF_SECCOMP 5 /* secure computing */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 18
@ -124,13 +125,14 @@ register struct thread_info *__current_thread_info __asm__("$28");
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_WORK_MASK 0x0000ffef /* work to do on
interrupt/exception return */
#define _TIF_ALLWORK_MASK 0x8000ffff /* work to do on any return to
u-space */
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (0x0000ffef & ~_TIF_SECCOMP)
/* work to do on any return to u-space */
#define _TIF_ALLWORK_MASK (0x8000ffff & ~_TIF_SECCOMP)
#endif /* __KERNEL__ */