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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2018-04-15 19:58:32 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-04-25 10:44:08 -0500 |
| commit | 9507a5d01254b96d1b90225b3037e9143149fdc6 (patch) | |
| tree | 6a3ca6b3a6e1703321bbeaad49e7d9a0135dac50 /arch/s390/mm/fault.c | |
| parent | signal/riscv: Replace do_trap_siginfo with force_sig_fault (diff) | |
| download | linux-dev-9507a5d01254b96d1b90225b3037e9143149fdc6.tar.xz linux-dev-9507a5d01254b96d1b90225b3037e9143149fdc6.zip | |
signal/s390: Use force_sig_fault where appropriate
Filling in struct siginfo before calling force_sig_info a tedious and
error prone process, where once in a great while the wrong fields
are filled out, and siginfo has been inconsistently cleared.
Simplify this process by using the helper force_sig_fault. Which
takes as a parameters all of the information it needs, ensures
all of the fiddly bits of filling in struct siginfo are done properly
and then calls force_sig_info.
In short about a 5 line reduction in code for every time force_sig_info
is called, which makes the calling function clearer.
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Acked-by: Martin Schwidefsky >schwidefsky@de.ibm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/s390/mm/fault.c')
| -rw-r--r-- | arch/s390/mm/fault.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index b3ff0e8e5860..e074480d3598 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -265,15 +265,10 @@ void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault) */ static noinline void do_sigsegv(struct pt_regs *regs, int si_code) { - struct siginfo si; - report_user_fault(regs, SIGSEGV, 1); - clear_siginfo(&si); - si.si_signo = SIGSEGV; - si.si_errno = 0; - si.si_code = si_code; - si.si_addr = (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK); - force_sig_info(SIGSEGV, &si, current); + force_sig_fault(SIGSEGV, si_code, + (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK), + current); } static noinline void do_no_context(struct pt_regs *regs) @@ -317,19 +312,13 @@ static noinline void do_low_address(struct pt_regs *regs) static noinline void do_sigbus(struct pt_regs *regs) { - struct task_struct *tsk = current; - struct siginfo si; - /* * Send a sigbus, regardless of whether we were in kernel * or user mode. */ - clear_siginfo(&si); - si.si_signo = SIGBUS; - si.si_errno = 0; - si.si_code = BUS_ADRERR; - si.si_addr = (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK); - force_sig_info(SIGBUS, &si, tsk); + force_sig_fault(SIGBUS, BUS_ADRERR, + (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK), + current); } static noinline int signal_return(struct pt_regs *regs) |