cc9f72e474
Setting si_code to __SI_FAULT results in a userspace seeing an si_code of 0. This is the same si_code as SI_USER. Posix and common sense requires that SI_USER not be a signal specific si_code. As such this use of 0 for the si_code is a pretty horribly broken ABI. This was introduced in 2.3.41 so this mess has had a long time for people to be able to start depending on it. As this bug has existed for 17 years already I don't know if it is worth fixing. It is definitely worth documenting what is going on so that no one decides to copy this bad decision. Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
33 lines
633 B
C
33 lines
633 B
C
#ifndef _UAPI__SPARC_SIGINFO_H
|
|
#define _UAPI__SPARC_SIGINFO_H
|
|
|
|
#if defined(__sparc__) && defined(__arch64__)
|
|
|
|
#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
|
|
#define __ARCH_SI_BAND_T int
|
|
|
|
#endif /* defined(__sparc__) && defined(__arch64__) */
|
|
|
|
|
|
#define __ARCH_SI_TRAPNO
|
|
|
|
#include <asm-generic/siginfo.h>
|
|
|
|
|
|
#define SI_NOINFO 32767 /* no information in siginfo_t */
|
|
|
|
/*
|
|
* SIGFPE si_codes
|
|
*/
|
|
#ifdef __KERNEL__
|
|
#define FPE_FIXME (__SI_FAULT|0) /* Broken dup of SI_USER */
|
|
#endif /* __KERNEL__ */
|
|
|
|
/*
|
|
* SIGEMT si_codes
|
|
*/
|
|
#define EMT_TAGOVF (__SI_FAULT|1) /* tag overflow */
|
|
#define NSIGEMT 1
|
|
|
|
#endif /* _UAPI__SPARC_SIGINFO_H */
|