diff options
author | Paul Moore <pmoore@redhat.com> | 2012-04-02 11:39:53 -0400 |
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committer | Paul Moore <pmoore@redhat.com> | 2012-04-02 16:03:40 -0400 |
commit | 668ddb6e4b6635d1bed24947868b51fb0376fa7d (patch) | |
tree | af9477760d6bcc1da4e0314f2d8f013d55828fb9 /src/system.h | |
parent | 2dca3086e80e8054995be51542cd9d30dc54b9ae (diff) | |
download | libseccomp-668ddb6e4b6635d1bed24947868b51fb0376fa7d.tar.gz |
all: use the system header files when possible
Signed-off-by: Paul Moore <pmoore@redhat.com>
Diffstat (limited to 'src/system.h')
-rw-r--r-- | src/system.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/system.h b/src/system.h new file mode 100644 index 0000000..d2d429e --- /dev/null +++ b/src/system.h @@ -0,0 +1,83 @@ +/** + * Seccomp System Information + * + * Copyright (c) 2012 Red Hat <pmoore@redhat.com> + * Author: Paul Moore <pmoore@redhat.com> + */ + +/* + * This program is free software: you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _SYSTEM_H +#define _SYSTEM_H + +#include <linux/filter.h> + +#include <configure.h> + +#ifdef CONF_SYSINC_SECCOMP + +/* system header file */ +#include <linux/seccomp.h> + +#else + +/* NOTE: the definitions below were taken from the Linux Kernel sources */ +#include <linux/types.h> + +/* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, <mode>) */ +#define SECCOMP_MODE_DISABLED 0 /* seccomp is not in use. */ +#define SECCOMP_MODE_STRICT 1 /* uses hard-coded filter. */ +#define SECCOMP_MODE_FILTER 2 /* uses user-supplied filter. */ + +/* + * All BPF programs must return a 32-bit value. + * The bottom 16-bits are for optional return data. + * The upper 16-bits are ordered from least permissive values to most. + * + * The ordering ensures that a min_t() over composed return values always + * selects the least permissive choice. + */ +#define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */ +#define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */ +#define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */ +#define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */ +#define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */ + +/* Masks for the return value sections. */ +#define SECCOMP_RET_ACTION 0x7fff0000U +#define SECCOMP_RET_DATA 0x0000ffffU + +/* + * struct seccomp_data - the format the BPF program executes over. + * @nr: the system call number + * @arch: indicates system call convention as an AUDIT_ARCH_* value + * as defined in <linux/audit.h>. + * @instruction_pointer: at the time of the system call. + * @args: up to 6 system call arguments always stored as 64-bit values + * regardless of the architecture. + */ +struct seccomp_data { + int nr; + __u32 arch; + __u64 instruction_pointer; + __u64 args[6]; +}; + +#endif /* CONF_SYSINC_SECCOMP */ + +/* rename some of the socket filter types to make more sense */ +typedef struct sock_filter bpf_instr_raw; + +#endif |