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authorEric W. Biederman <ebiederm@xmission.com>2018-04-24 20:48:32 -0500
committerEric W. Biederman <ebiederm@xmission.com>2018-04-26 19:51:12 -0500
commit76b7f670730e87974f71df9f6129811e2769666e (patch)
treecee6f3c95f0dbead2fbce14269f93d182020fe8d
parent5611f55ee4df70d947bf239c587e742efdab028b (diff)
downloadlinux-76b7f670730e87974f71df9f6129811e2769666e.tar.bz2
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" <ebiederm@xmission.com>
-rw-r--r--fs/signalfd.c6
-rw-r--r--include/uapi/linux/signalfd.h6
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];
};