From 76b7f670730e87974f71df9f6129811e2769666e Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 24 Apr 2018 20:48:32 -0500 Subject: [PATCH] signal/signalfd: Add support for SIGSYS I don't know why signalfd has never grown support for SIGSYS but grow it now. This corrects an oversight and removes a need for a default in the switch statement. Allowing gcc to warn when future members are added to the enum siginfo_layout, and signalfd does not handle them. Signed-off-by: "Eric W. Biederman" --- fs/signalfd.c | 6 +++++- include/uapi/linux/signalfd.h | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/signalfd.c b/fs/signalfd.c index 31e960209a08..f652249f59f9 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -134,7 +134,6 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, new.ssi_stime = kinfo->si_stime; break; case SIL_RT: - default: /* * This case catches also the signals queued by sigqueue(). */ @@ -143,6 +142,11 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, new.ssi_ptr = (long) kinfo->si_ptr; new.ssi_int = kinfo->si_int; break; + case SIL_SYS: + new.ssi_call_addr = (long) kinfo->si_call_addr; + new.ssi_syscall = kinfo->si_syscall; + new.ssi_arch = kinfo->si_arch; + break; } if (copy_to_user(uinfo, &new, sizeof(struct signalfd_siginfo))) diff --git a/include/uapi/linux/signalfd.h b/include/uapi/linux/signalfd.h index 6f0da42fc5ef..83429a05b698 100644 --- a/include/uapi/linux/signalfd.h +++ b/include/uapi/linux/signalfd.h @@ -35,6 +35,10 @@ struct signalfd_siginfo { __u64 ssi_stime; __u64 ssi_addr; __u16 ssi_addr_lsb; + __u16 __pad2; + __s32 ssi_syscall; + __u64 ssi_call_addr; + __u32 ssi_arch; /* * Pad strcture to 128 bytes. Remember to update the @@ -45,7 +49,7 @@ struct signalfd_siginfo { * comes out of a read(2) and we really don't want to have * a compat on read(2). */ - __u8 __pad[46]; + __u8 __pad[28]; };