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Auto merge of #1394 - Susurrus:sigevent_extra_traits, r=gnzlbg
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Switch to manual trait impls for sigevent

`sigevent` on most platforms have padding or unused fields. Rather
than display those in the `Debug` impl by deriving it, manually implement
all `extra_traits` instead ignoring those fields.

I do worry that my `PartialEq` implementations for this for some platforms (like Linux) is not correct due to ignoring bytes that shouldn't be ignored because these structs don't have a proper union set up.

cc @asomers
Part of nix-rust/nix#1035
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@bors
bors committed Jun 11, 2019
2 parents 6985986 + 7c26591 commit 11c762c
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Showing 9 changed files with 369 additions and 93 deletions.
51 changes: 42 additions & 9 deletions src/fuchsia/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -432,15 +432,6 @@ s! {
pub int_n_sign_posn: ::c_char,
}

pub struct sigevent {
pub sigev_value: ::sigval,
pub sigev_signo: ::c_int,
pub sigev_notify: ::c_int,
pub sigev_notify_function: fn(::sigval),
pub sigev_notify_attributes: *mut pthread_attr_t,
pub __pad: [::c_char; 56 - 3 * 8 /* 8 == sizeof(long) */],
}

pub struct rlimit64 {
pub rlim_cur: rlim64_t,
pub rlim_max: rlim64_t,
Expand Down Expand Up @@ -962,6 +953,15 @@ s_no_extra_traits! {
pub nl_pid: u32,
pub nl_groups: u32
}

pub struct sigevent {
pub sigev_value: ::sigval,
pub sigev_signo: ::c_int,
pub sigev_notify: ::c_int,
pub sigev_notify_function: fn(::sigval),
pub sigev_notify_attributes: *mut pthread_attr_t,
pub __pad: [::c_char; 56 - 3 * 8 /* 8 == sizeof(long) */],
}
}

cfg_if! {
Expand Down Expand Up @@ -1255,6 +1255,39 @@ cfg_if! {
self.nl_groups.hash(state);
}
}

impl PartialEq for sigevent {
fn eq(&self, other: &sigevent) -> bool {
self.sigev_value == other.sigev_value
&& self.sigev_signo == other.sigev_signo
&& self.sigev_notify == other.sigev_notify
&& self.sigev_notify_function == other.sigev_notify_function
&& self.sigev_notify_attributes
== other.sigev_notify_attributes
}
}
impl Eq for sigevent {}
impl ::fmt::Debug for sigevent {
fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
f.debug_struct("sigevent")
.field("sigev_value", &self.sigev_value)
.field("sigev_signo", &self.sigev_signo)
.field("sigev_notify", &self.sigev_notify)
.field("sigev_notify_function", &self.sigev_notify_function)
.field("sigev_notify_attributes",
&self.sigev_notify_attributes)
.finish()
}
}
impl ::hash::Hash for sigevent {
fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
self.sigev_value.hash(state);
self.sigev_signo.hash(state);
self.sigev_notify.hash(state);
self.sigev_notify_function.hash(state);
self.sigev_notify_attributes.hash(state);
}
}
}
}

Expand Down
49 changes: 41 additions & 8 deletions src/unix/bsd/apple/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -287,14 +287,6 @@ s! {
pub int_n_sign_posn: ::c_char,
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
__unused1: *mut ::c_void, //actually a function pointer
pub sigev_notify_attributes: *mut ::pthread_attr_t
}

pub struct proc_taskinfo {
pub pti_virtual_size: u64,
pub pti_resident_size: u64,
Expand Down Expand Up @@ -612,6 +604,14 @@ s_no_extra_traits!{
pub ut_host: [::c_char; _UTX_HOSTSIZE],
ut_pad: [u32; 16],
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
__unused1: *mut ::c_void, //actually a function pointer
pub sigev_notify_attributes: *mut ::pthread_attr_t
}
}

cfg_if! {
Expand Down Expand Up @@ -1159,6 +1159,39 @@ cfg_if! {
self.ut_pad.hash(state);
}
}

impl PartialEq for sigevent {
fn eq(&self, other: &sigevent) -> bool {
self.sigev_notify == other.sigev_notify
&& self.sigev_signo == other.sigev_signo
&& self.sigev_value == other.sigev_value
&& self.sigev_notify_attributes
== other.sigev_notify_attributes
}
}

impl Eq for sigevent {}

impl ::fmt::Debug for sigevent {
fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
f.debug_struct("sigevent")
.field("sigev_notify", &self.sigev_notify)
.field("sigev_signo", &self.sigev_signo)
.field("sigev_value", &self.sigev_value)
.field("sigev_notify_attributes",
&self.sigev_notify_attributes)
.finish()
}
}

impl ::hash::Hash for sigevent {
fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
self.sigev_notify.hash(state);
self.sigev_signo.hash(state);
self.sigev_value.hash(state);
self.sigev_notify_attributes.hash(state);
}
}
}
}

Expand Down
52 changes: 39 additions & 13 deletions src/unix/bsd/freebsdlike/dragonfly/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -70,19 +70,6 @@ s! {
pub mq_curmsgs: ::c_long,
}

pub struct sigevent {
pub sigev_notify: ::c_int,
// The union is 8-byte in size, so it is aligned at a 8-byte offset.
#[cfg(target_pointer_width = "64")]
__unused1: ::c_int,
pub sigev_signo: ::c_int, //actually a union
// pad the union
#[cfg(target_pointer_width = "64")]
__unused2: ::c_int,
pub sigev_value: ::sigval,
__unused3: *mut ::c_void //actually a function pointer
}

pub struct statvfs {
pub f_bsize: ::c_ulong,
pub f_frsize: ::c_ulong,
Expand Down Expand Up @@ -234,6 +221,20 @@ s_no_extra_traits! {
pub f_asyncreads: ::c_long,
pub f_mntfromname: [::c_char; 90],
}

pub struct sigevent {
pub sigev_notify: ::c_int,
// The union is 8-byte in size, so it is aligned at a 8-byte offset.
#[cfg(target_pointer_width = "64")]
__unused1: ::c_int,
pub sigev_signo: ::c_int, //actually a union
// pad the union
#[cfg(target_pointer_width = "64")]
__unused2: ::c_int,
pub sigev_value: ::sigval,
__unused3: *mut ::c_void //actually a function pointer
}

}

cfg_if! {
Expand Down Expand Up @@ -408,6 +409,31 @@ cfg_if! {
self.f_mntfromname.hash(state);
}
}

impl PartialEq for sigevent {
fn eq(&self, other: &sigevent) -> bool {
self.sigev_notify == other.sigev_notify
&& self.sigev_signo == other.sigev_signo
&& self.sigev_value == other.sigev_value
}
}
impl Eq for sigevent {}
impl ::fmt::Debug for sigevent {
fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
f.debug_struct("sigevent")
.field("sigev_notify", &self.sigev_notify)
.field("sigev_signo", &self.sigev_signo)
.field("sigev_value", &self.sigev_value)
.finish()
}
}
impl ::hash::Hash for sigevent {
fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
self.sigev_notify.hash(state);
self.sigev_signo.hash(state);
self.sigev_value.hash(state);
}
}
}
}

Expand Down
54 changes: 42 additions & 12 deletions src/unix/bsd/freebsdlike/freebsd/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -46,18 +46,6 @@ s! {
pub ip6: *mut ::in6_addr,
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
//The rest of the structure is actually a union. We expose only
//sigev_notify_thread_id because it's the most useful union member.
pub sigev_notify_thread_id: ::lwpid_t,
#[cfg(target_pointer_width = "64")]
__unused1: ::c_int,
__unused2: [::c_long; 7]
}

pub struct statvfs {
pub f_bavail: ::fsblkcnt_t,
pub f_bfree: ::fsblkcnt_t,
Expand Down Expand Up @@ -151,6 +139,18 @@ s_no_extra_traits! {
pub mq_curmsgs: ::c_long,
__reserved: [::c_long; 4]
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
//The rest of the structure is actually a union. We expose only
//sigev_notify_thread_id because it's the most useful union member.
pub sigev_notify_thread_id: ::lwpid_t,
#[cfg(target_pointer_width = "64")]
__unused1: ::c_int,
__unused2: [::c_long; 7]
}
}

cfg_if! {
Expand Down Expand Up @@ -274,6 +274,36 @@ cfg_if! {
self.mq_curmsgs.hash(state);
}
}

impl PartialEq for sigevent {
fn eq(&self, other: &sigevent) -> bool {
self.sigev_notify == other.sigev_notify
&& self.sigev_signo == other.sigev_signo
&& self.sigev_value == other.sigev_value
&& self.sigev_notify_thread_id
== other.sigev_notify_thread_id
}
}
impl Eq for sigevent {}
impl ::fmt::Debug for sigevent {
fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
f.debug_struct("sigevent")
.field("sigev_notify", &self.sigev_notify)
.field("sigev_signo", &self.sigev_signo)
.field("sigev_value", &self.sigev_value)
.field("sigev_notify_thread_id",
&self.sigev_notify_thread_id)
.finish()
}
}
impl ::hash::Hash for sigevent {
fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
self.sigev_notify.hash(state);
self.sigev_signo.hash(state);
self.sigev_value.hash(state);
self.sigev_notify_thread_id.hash(state);
}
}
}
}

Expand Down
46 changes: 38 additions & 8 deletions src/unix/bsd/netbsdlike/netbsd/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -46,14 +46,6 @@ s! {
pub mq_curmsgs: ::c_long,
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
__unused1: *mut ::c_void, //actually a function pointer
pub sigev_notify_attributes: *mut ::c_void
}

pub struct sigset_t {
__bits: [u32; 4],
}
Expand Down Expand Up @@ -356,6 +348,14 @@ s_no_extra_traits! {
__ss_pad2: i64,
__ss_pad3: [u8; 112],
}

pub struct sigevent {
pub sigev_notify: ::c_int,
pub sigev_signo: ::c_int,
pub sigev_value: ::sigval,
__unused1: *mut ::c_void, //actually a function pointer
pub sigev_notify_attributes: *mut ::c_void
}
}

cfg_if! {
Expand Down Expand Up @@ -658,6 +658,36 @@ cfg_if! {
self.__ss_pad3.hash(state);
}
}

impl PartialEq for sigevent {
fn eq(&self, other: &sigevent) -> bool {
self.sigev_notify == other.sigev_notify
&& self.sigev_signo == other.sigev_signo
&& self.sigev_value == other.sigev_value
&& self.sigev_notify_attributes
== other.sigev_notify_attributes
}
}
impl Eq for sigevent {}
impl ::fmt::Debug for sigevent {
fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
f.debug_struct("sigevent")
.field("sigev_notify", &self.sigev_notify)
.field("sigev_signo", &self.sigev_signo)
.field("sigev_value", &self.sigev_value)
.field("sigev_notify_attributes",
&self.sigev_notify_attributes)
.finish()
}
}
impl ::hash::Hash for sigevent {
fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
self.sigev_notify.hash(state);
self.sigev_signo.hash(state);
self.sigev_value.hash(state);
self.sigev_notify_attributes.hash(state);
}
}
}
}

Expand Down
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