4149e0de6d
This reverts the seccomp related patches committed around 2014-08-27. This allows for a cleaner cherry-pick of newly landed upstream patches.f56b1aaarm: fixup NR_syscalls to accommodate the new seccomp syscall81ff7faseccomp: implement SECCOMP_FILTER_FLAG_TSYNCd924727seccomp: allow mode setting across threads743266aseccomp: introduce writer locking3497a88seccomp: split filter prep from check and apply2c6d7deMIPS: add seccomp syscall83f1ccbaARM: add seccomp syscalla75a29bseccomp: add "seccomp" syscall1a63bceseccomp: split mode setting routinesc208e4eseccomp: extract check/assign mode helpers6862b01seccomp: create internal mode-setting function1ba2ccbMAINTAINERS: create seccomp entry c2da3eb seccomp: fix memory leak on filter attach945a225ARM: 7888/1: seccomp: not compatible with ARM OABI Change-Id: I3f129263d68a7b3c206d79f84f7f9908d13064f6 Signed-off-by: JP Abgrall <jpa@google.com>
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
#ifndef _LINUX_SECCOMP_H
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#define _LINUX_SECCOMP_H
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#include <uapi/linux/seccomp.h>
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#ifdef CONFIG_SECCOMP
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#include <linux/thread_info.h>
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#include <asm/seccomp.h>
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struct seccomp_filter;
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/**
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* struct seccomp - the state of a seccomp'ed process
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*
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* @mode: indicates one of the valid values above for controlled
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* system calls available to a process.
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* @filter: The metadata and ruleset for determining what system calls
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* are allowed for a task.
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*
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* @filter must only be accessed from the context of current as there
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* is no locking.
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*/
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struct seccomp {
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int mode;
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struct seccomp_filter *filter;
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};
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extern int __secure_computing(int);
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static inline int secure_computing(int this_syscall)
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{
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if (unlikely(test_thread_flag(TIF_SECCOMP)))
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return __secure_computing(this_syscall);
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return 0;
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}
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/* A wrapper for architectures supporting only SECCOMP_MODE_STRICT. */
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static inline void secure_computing_strict(int this_syscall)
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{
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BUG_ON(secure_computing(this_syscall) != 0);
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}
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extern long prctl_get_seccomp(void);
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extern long prctl_set_seccomp(unsigned long, char __user *);
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static inline int seccomp_mode(struct seccomp *s)
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{
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return s->mode;
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}
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#else /* CONFIG_SECCOMP */
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#include <linux/errno.h>
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struct seccomp { };
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struct seccomp_filter { };
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static inline int secure_computing(int this_syscall) { return 0; }
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static inline void secure_computing_strict(int this_syscall) { return; }
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static inline long prctl_get_seccomp(void)
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{
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return -EINVAL;
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}
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static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
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{
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return -EINVAL;
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}
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static inline int seccomp_mode(struct seccomp *s)
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{
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return 0;
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}
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#endif /* CONFIG_SECCOMP */
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#ifdef CONFIG_SECCOMP_FILTER
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extern void put_seccomp_filter(struct task_struct *tsk);
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extern void get_seccomp_filter(struct task_struct *tsk);
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extern u32 seccomp_bpf_load(int off);
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#else /* CONFIG_SECCOMP_FILTER */
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static inline void put_seccomp_filter(struct task_struct *tsk)
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{
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return;
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}
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static inline void get_seccomp_filter(struct task_struct *tsk)
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{
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return;
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}
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#endif /* CONFIG_SECCOMP_FILTER */
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#endif /* _LINUX_SECCOMP_H */
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