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authorEric W. Biederman <ebiederm@xmission.com>2021-05-02 17:28:31 -0500
committerEric W. Biederman <ebiederm@xmission.com>2021-05-18 16:20:54 -0500
commit0683b53197b55343a166f1507086823030809a19 (patch)
tree19e83bcb655352a82cad92ec948df125d67737b1 /fs
parentaf5eeab7e8e8c2f0fad10e4ab8cc8092012a2d5b (diff)
signal: Deliver all of the siginfo perf data in _perf
Don't abuse si_errno and deliver all of the perf data in _perf member of siginfo_t. Note: The data field in the perf data structures in a u64 to allow a pointer to be encoded without needed to implement a 32bit and 64bit version of the same structure. There already exists a 32bit and 64bit versions siginfo_t, and the 32bit version can not include a 64bit member as it only has 32bit alignment. So unsigned long is used in siginfo_t instead of a u64 as unsigned long can encode a pointer on all architectures linux supports. v1: https://lkml.kernel.org/r/m11rarqqx2.fsf_-_@fess.ebiederm.org v2: https://lkml.kernel.org/r/20210503203814.25487-10-ebiederm@xmission.com v3: https://lkml.kernel.org/r/20210505141101.11519-11-ebiederm@xmission.com Link: https://lkml.kernel.org/r/20210517195748.8880-4-ebiederm@xmission.com Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/signalfd.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/signalfd.c b/fs/signalfd.c
index e87e59581653..373df2f12415 100644
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -134,7 +134,8 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo,
break;
case SIL_PERF_EVENT:
new.ssi_addr = (long) kinfo->si_addr;
- new.ssi_perf = kinfo->si_perf;
+ new.ssi_perf_type = kinfo->si_perf_type;
+ new.ssi_perf_data = kinfo->si_perf_data;
break;
case SIL_CHLD:
new.ssi_pid = kinfo->si_pid;