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authorGravatar Daniel Golle <daniel@makrotopia.org>2015-05-17 22:49:23 +0200
committerGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2015-05-20 12:26:26 +0200
commit274f3c84562cbba1d99bab2d085d22d8aa401a4e (patch)
tree6aa9f78379266a7839343be060ca314b22c93572
parentec0827d3c2af5c9569c04cbb6f57a3c581583722 (diff)
downloaduClibc-274f3c84562cbba1d99bab2d085d22d8aa401a4e.tar.gz
uClibc-274f3c84562cbba1d99bab2d085d22d8aa401a4e.tar.bz2
siginfo: add signal info for seccomp related SIGSYS
uClibc doesn't define signal info for the SIGSYS signal which is issued in case of hitting a syscall prohibited by seccomp. This is sad as it makes debugging seccomp filter policies impossible on some architectures (at least ARM and PowerPC, maybe also others) which do not coincidentally set si_value.sival_int as the syscall number. To fix this, import the definitions and macros needed from glibc. Signed-off-by: Daniel Golle <daniel@makrotopia.org> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--libc/sysdeps/linux/alpha/bits/siginfo.h11
-rw-r--r--libc/sysdeps/linux/common/bits/siginfo.h11
-rw-r--r--libc/sysdeps/linux/ia64/bits/siginfo.h11
-rw-r--r--libc/sysdeps/linux/mips/bits/siginfo.h11
-rw-r--r--libc/sysdeps/linux/sparc/bits/siginfo.h11
5 files changed, 55 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/alpha/bits/siginfo.h b/libc/sysdeps/linux/alpha/bits/siginfo.h
index 0a37ad08b..7e476aa70 100644
--- a/libc/sysdeps/linux/alpha/bits/siginfo.h
+++ b/libc/sysdeps/linux/alpha/bits/siginfo.h
@@ -97,6 +97,14 @@ typedef struct siginfo
int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
+
+ /* SIGSYS. */
+ struct
+ {
+ void *_call_addr; /* Calling user insn. */
+ int _syscall; /* Triggering system call number. */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
+ } _sigsys;
} _sifields;
} siginfo_t;
@@ -115,6 +123,9 @@ typedef struct siginfo
# define si_addr _sifields._sigfault.si_addr
# define si_band _sifields._sigpoll.si_band
# define si_fd _sifields._sigpoll.si_fd
+# define si_call_addr _sifields._sigsys._call_addr
+# define si_syscall _sifields._sigsys._syscall
+# define si_arch _sifields._sigsys._arch
/* Values for `si_code'. Positive values are reserved for kernel-generated
diff --git a/libc/sysdeps/linux/common/bits/siginfo.h b/libc/sysdeps/linux/common/bits/siginfo.h
index c26e0668f..724f756cd 100644
--- a/libc/sysdeps/linux/common/bits/siginfo.h
+++ b/libc/sysdeps/linux/common/bits/siginfo.h
@@ -103,6 +103,14 @@ typedef struct siginfo
long int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
+
+ /* SIGSYS. */
+ struct
+ {
+ void *_call_addr; /* Calling user insn. */
+ int _syscall; /* Triggering system call number. */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
+ } _sigsys;
} _sifields;
} siginfo_t;
@@ -121,6 +129,9 @@ typedef struct siginfo
# define si_addr _sifields._sigfault.si_addr
# define si_band _sifields._sigpoll.si_band
# define si_fd _sifields._sigpoll.si_fd
+# define si_call_addr _sifields._sigsys._call_addr
+# define si_syscall _sifields._sigsys._syscall
+# define si_arch _sifields._sigsys._arch
/* Values for `si_code'. Positive values are reserved for kernel-generated
diff --git a/libc/sysdeps/linux/ia64/bits/siginfo.h b/libc/sysdeps/linux/ia64/bits/siginfo.h
index 3ac988baf..df18b3606 100644
--- a/libc/sysdeps/linux/ia64/bits/siginfo.h
+++ b/libc/sysdeps/linux/ia64/bits/siginfo.h
@@ -102,6 +102,14 @@ typedef struct siginfo
long int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
+
+ /* SIGSYS. */
+ struct
+ {
+ void *_call_addr; /* Calling user insn. */
+ int _syscall; /* Triggering system call number. */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
+ } _sigsys;
} _sifields;
} siginfo_t;
@@ -120,6 +128,9 @@ typedef struct siginfo
# define si_addr _sifields._sigfault.si_addr
# define si_band _sifields._sigpoll.si_band
# define si_fd _sifields._sigpoll.si_fd
+# define si_call_addr _sifields._sigsys._call_addr
+# define si_syscall _sifields._sigsys._syscall
+# define si_arch _sifields._sigsys._arch
# ifdef __USE_GNU
# define si_imm _sifields._sigfault._si_imm
diff --git a/libc/sysdeps/linux/mips/bits/siginfo.h b/libc/sysdeps/linux/mips/bits/siginfo.h
index 5199d4d99..b204301af 100644
--- a/libc/sysdeps/linux/mips/bits/siginfo.h
+++ b/libc/sysdeps/linux/mips/bits/siginfo.h
@@ -108,6 +108,14 @@ typedef struct siginfo
long int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
+
+ /* SIGSYS. */
+ struct
+ {
+ void *_call_addr; /* Calling user insn. */
+ int _syscall; /* Triggering system call number. */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
+ } _sigsys;
} _sifields;
} siginfo_t;
@@ -127,6 +135,9 @@ typedef struct siginfo
# define si_addr_lsb _sifields._sigfault.si_addr_lsb
# define si_band _sifields._sigpoll.si_band
# define si_fd _sifields._sigpoll.si_fd
+# define si_call_addr _sifields._sigsys._call_addr
+# define si_syscall _sifields._sigsys._syscall
+# define si_arch _sifields._sigsys._arch
/* Values for `si_code'. Positive values are reserved for kernel-generated
diff --git a/libc/sysdeps/linux/sparc/bits/siginfo.h b/libc/sysdeps/linux/sparc/bits/siginfo.h
index 3ffeb6dcf..da1c83884 100644
--- a/libc/sysdeps/linux/sparc/bits/siginfo.h
+++ b/libc/sysdeps/linux/sparc/bits/siginfo.h
@@ -104,6 +104,14 @@ typedef struct siginfo
int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
+
+ /* SIGSYS. */
+ struct
+ {
+ void *_call_addr; /* Calling user insn. */
+ int _syscall; /* Triggering system call number. */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */
+ } _sigsys;
} _sifields;
} siginfo_t;
@@ -123,6 +131,9 @@ typedef struct siginfo
# define si_trapno _sifields._sigfault.si_trapno
# define si_band _sifields._sigpoll.si_band
# define si_fd _sifields._sigpoll.si_fd
+# define si_call_addr _sifields._sigsys._call_addr
+# define si_syscall _sifields._sigsys._syscall
+# define si_arch _sifields._sigsys._arch
/* Values for `si_code'. Positive values are reserved for kernel-generated