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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2012-07-31 15:37:13 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-08-08 07:32:56 -0700 |
| commit | c63cb468f373f479ff52b4a1b75f8ecdeaaf4f16 (patch) | |
| tree | c89dce49ad36350db1eb224a130a183958f66161 /arch/s390/kernel/ptrace.c | |
| parent | e206d3da58803de5cd38dc728f6da5221ec18ab0 (diff) | |
| download | linux-c63cb468f373f479ff52b4a1b75f8ecdeaaf4f16.tar.gz linux-c63cb468f373f479ff52b4a1b75f8ecdeaaf4f16.tar.bz2 linux-c63cb468f373f479ff52b4a1b75f8ecdeaaf4f16.zip | |
s390/seccomp: add support for system call filtering using BPF
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/ptrace.c')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index f4eb37680b91..e4be113fbac6 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -719,7 +719,11 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) long ret = 0; /* Do the secure computing check first. */ - secure_computing_strict(regs->gprs[2]); + if (secure_computing(regs->gprs[2])) { + /* seccomp failures shouldn't expose any additional code. */ + ret = -1; + goto out; + } /* * The sysc_tracesys code in entry.S stored the system @@ -745,6 +749,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) regs->gprs[2], regs->orig_gpr2, regs->gprs[3], regs->gprs[4], regs->gprs[5]); +out: return ret ?: regs->gprs[2]; } |