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Specialize CMSG_NXTHDR for Android and Emscripten

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This commit is contained in:
Alan Somers 2019-02-05 08:00:26 -07:00
parent 4300666bf3
commit eddc8d342b
4 changed files with 50 additions and 18 deletions
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14
src/unix/notbsd/android/mod.rs
View File

@ -1688,6 +1688,20 @@ pub const MODULE_INIT_IGNORE_VERMAGIC: ::c_uint = 0x0002;
pub const ENOATTR: ::c_int = ::ENODATA;
f! {
pub fn CMSG_NXTHDR(mhdr: *const msghdr,
cmsg: *const cmsghdr) -> *mut cmsghdr {
let next = (cmsg as usize
+ super::CMSG_ALIGN((*cmsg).cmsg_len as usize))
as *mut cmsghdr;
let max = (*mhdr).msg_control as usize
+ (*mhdr).msg_controllen as usize;
if (next.offset(1)) as usize > max {
0 as *mut cmsghdr
} else {
next as *mut cmsghdr
}
}
pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
for slot in cpuset.__bits.iter_mut() {
*slot = 0;

17
src/unix/notbsd/emscripten.rs
View File

@ -1515,6 +1515,23 @@ pub const ARPD_FLUSH: ::c_ushort = 0x03;
pub const ATF_MAGIC: ::c_int = 0x80;
f! {
pub fn CMSG_NXTHDR(mhdr: *const msghdr,
cmsg: *const cmsghdr) -> *mut cmsghdr {
if ((*cmsg).cmsg_len as usize) < mem::size_of::<cmsghdr>() {
return 0 as *mut cmsghdr;
};
let next = (cmsg as usize +
super::CMSG_ALIGN((*cmsg).cmsg_len as usize))
as *mut cmsghdr;
let max = (*mhdr).msg_control as usize
+ (*mhdr).msg_controllen as usize;
if (next.offset(1)) as usize > max {
0 as *mut cmsghdr
} else {
next as *mut cmsghdr
}
}
pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
for slot in cpuset.bits.iter_mut() {
*slot = 0;

19
src/unix/notbsd/linux/mod.rs
View File

@ -1897,6 +1897,25 @@ pub const SOF_TIMESTAMPING_SYS_HARDWARE: ::c_uint = 1 << 5;
pub const SOF_TIMESTAMPING_RAW_HARDWARE: ::c_uint = 1 << 6;
f! {
pub fn CMSG_NXTHDR(mhdr: *const msghdr,
cmsg: *const cmsghdr) -> *mut cmsghdr {
if ((*cmsg).cmsg_len as usize) < mem::size_of::<cmsghdr>() {
return 0 as *mut cmsghdr;
};
let next = (cmsg as usize +
super::CMSG_ALIGN((*cmsg).cmsg_len as usize))
as *mut cmsghdr;
let max = (*mhdr).msg_control as usize
+ (*mhdr).msg_controllen as usize;
if (next.offset(1)) as usize > max ||
next as usize + super::CMSG_ALIGN((*next).cmsg_len as usize) > max
{
0 as *mut cmsghdr
} else {
next as *mut cmsghdr
}
}
pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
for slot in cpuset.bits.iter_mut() {
*slot = 0;

18
src/unix/notbsd/mod.rs
View File

@ -1127,24 +1127,6 @@ f! {
}
}
pub fn CMSG_NXTHDR(mhdr: *const msghdr,
cmsg: *const cmsghdr) -> *mut cmsghdr {
if ((*cmsg).cmsg_len as usize) < mem::size_of::<cmsghdr>() {
return 0 as *mut cmsghdr;
};
let next = (cmsg as usize + CMSG_ALIGN((*cmsg).cmsg_len as usize))
as *mut cmsghdr;
let max = (*mhdr).msg_control as usize
+ (*mhdr).msg_controllen as usize;
if (next.offset(1)) as usize > max
|| next as usize + CMSG_ALIGN((*next).cmsg_len as usize) > max
{
0 as *mut cmsghdr
} else {
next as *mut cmsghdr
}
}
pub fn CMSG_DATA(cmsg: *const cmsghdr) -> *mut ::c_uchar {
cmsg.offset(1) as *mut ::c_uchar
}