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authorLinus Torvalds <torvalds@linux-foundation.org>2019-01-02 09:48:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-01-02 09:48:13 -0800
commitd9a7fa67b4bfe6ce93ee9aab23ae2e7ca0763e84 (patch)
treeea15c22c088160107c09da1c8d380753bb0c8d21 /include
parentf218a29c25ad8abdb961435d6b8139f462061364 (diff)
parent55b8cbe470d103b44104c64dbf89e5cad525d4e0 (diff)
downloadlinux-stericsson-d9a7fa67b4bfe6ce93ee9aab23ae2e7ca0763e84.tar.gz
Merge branch 'next-seccomp' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull seccomp updates from James Morris: - Add SECCOMP_RET_USER_NOTIF - seccomp fixes for sparse warnings and s390 build (Tycho) * 'next-seccomp' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: seccomp, s390: fix build for syscall type change seccomp: fix poor type promotion samples: add an example of seccomp user trap seccomp: add a return code to trap to userspace seccomp: switch system call argument type to void * seccomp: hoist struct seccomp_data recalculation higher
Diffstat (limited to 'include')
-rw-r--r--include/linux/seccomp.h9
-rw-r--r--include/linux/syscalls.h2
-rw-r--r--include/uapi/linux/seccomp.h40
3 files changed, 43 insertions, 8 deletions
diff --git a/include/linux/seccomp.h b/include/linux/seccomp.h
index e5320f6c8654..84868d37b35d 100644
--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -4,9 +4,10 @@
#include <uapi/linux/seccomp.h>
-#define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \
- SECCOMP_FILTER_FLAG_LOG | \
- SECCOMP_FILTER_FLAG_SPEC_ALLOW)
+#define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \
+ SECCOMP_FILTER_FLAG_LOG | \
+ SECCOMP_FILTER_FLAG_SPEC_ALLOW | \
+ SECCOMP_FILTER_FLAG_NEW_LISTENER)
#ifdef CONFIG_SECCOMP
@@ -43,7 +44,7 @@ extern void secure_computing_strict(int this_syscall);
#endif
extern long prctl_get_seccomp(void);
-extern long prctl_set_seccomp(unsigned long, char __user *);
+extern long prctl_set_seccomp(unsigned long, void __user *);
static inline int seccomp_mode(struct seccomp *s)
{
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 251979d2e709..257cccba3062 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -898,7 +898,7 @@ asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
int newdfd, const char __user *newname,
unsigned int flags);
asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
- const char __user *uargs);
+ void __user *uargs);
asmlinkage long sys_getrandom(char __user *buf, size_t count,
unsigned int flags);
asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
diff --git a/include/uapi/linux/seccomp.h b/include/uapi/linux/seccomp.h
index 9efc0e73d50b..90734aa5aa36 100644
--- a/include/uapi/linux/seccomp.h
+++ b/include/uapi/linux/seccomp.h
@@ -15,11 +15,13 @@
#define SECCOMP_SET_MODE_STRICT 0
#define SECCOMP_SET_MODE_FILTER 1
#define SECCOMP_GET_ACTION_AVAIL 2
+#define SECCOMP_GET_NOTIF_SIZES 3
/* Valid flags for SECCOMP_SET_MODE_FILTER */
-#define SECCOMP_FILTER_FLAG_TSYNC (1UL << 0)
-#define SECCOMP_FILTER_FLAG_LOG (1UL << 1)
-#define SECCOMP_FILTER_FLAG_SPEC_ALLOW (1UL << 2)
+#define SECCOMP_FILTER_FLAG_TSYNC (1UL << 0)
+#define SECCOMP_FILTER_FLAG_LOG (1UL << 1)
+#define SECCOMP_FILTER_FLAG_SPEC_ALLOW (1UL << 2)
+#define SECCOMP_FILTER_FLAG_NEW_LISTENER (1UL << 3)
/*
* All BPF programs must return a 32-bit value.
@@ -35,6 +37,7 @@
#define SECCOMP_RET_KILL SECCOMP_RET_KILL_THREAD
#define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */
#define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */
+#define SECCOMP_RET_USER_NOTIF 0x7fc00000U /* notifies userspace */
#define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */
#define SECCOMP_RET_LOG 0x7ffc0000U /* allow after logging */
#define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */
@@ -60,4 +63,35 @@ struct seccomp_data {
__u64 args[6];
};
+struct seccomp_notif_sizes {
+ __u16 seccomp_notif;
+ __u16 seccomp_notif_resp;
+ __u16 seccomp_data;
+};
+
+struct seccomp_notif {
+ __u64 id;
+ __u32 pid;
+ __u32 flags;
+ struct seccomp_data data;
+};
+
+struct seccomp_notif_resp {
+ __u64 id;
+ __s64 val;
+ __s32 error;
+ __u32 flags;
+};
+
+#define SECCOMP_IOC_MAGIC '!'
+#define SECCOMP_IO(nr) _IO(SECCOMP_IOC_MAGIC, nr)
+#define SECCOMP_IOR(nr, type) _IOR(SECCOMP_IOC_MAGIC, nr, type)
+#define SECCOMP_IOW(nr, type) _IOW(SECCOMP_IOC_MAGIC, nr, type)
+#define SECCOMP_IOWR(nr, type) _IOWR(SECCOMP_IOC_MAGIC, nr, type)
+
+/* Flags for seccomp notification fd ioctl. */
+#define SECCOMP_IOCTL_NOTIF_RECV SECCOMP_IOWR(0, struct seccomp_notif)
+#define SECCOMP_IOCTL_NOTIF_SEND SECCOMP_IOWR(1, \
+ struct seccomp_notif_resp)
+#define SECCOMP_IOCTL_NOTIF_ID_VALID SECCOMP_IOR(2, __u64)
#endif /* _UAPI_LINUX_SECCOMP_H */