POSIX AIO definitions, for BSD and Linux

Where structures included unions, I only defined the most useful member.  This
means that sigevents can't be delivered using SIGEV_THREAD until Rust gets better
union support (SIGEV_THREAD_ID still works).

src/unix/bsd/apple/mod.rs

@@ -25,6 +25,16 @@ pub type sem_t = ::c_int;
 pub enum timezone {}
 
 s! {
+    pub struct aiocb {
+        pub aio_fildes: ::c_int,
+        pub aio_offset: ::off_t,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nybtes: ::size_t,
+        pub aio_reqprio: ::c_int,
+        pub aio_sigevent: sigevent,
+        pub aio_lio_opcode: ::c_int
+    }
+
     pub struct utmpx {
         pub ut_user: [::c_char; _UTX_USERSIZE],
         pub ut_id: [::c_char; _UTX_IDSIZE],
@@ -303,6 +313,14 @@ s! {
         pub int_p_sign_posn: ::c_char,
         pub int_n_sign_posn: ::c_char,
     }
+
+    pub struct sigevent {
+        pub sigev_notify: ::c_int,
+        pub sigev_signo: ::c_int,
+        pub sigev_value: ::intptr_t,    //actually a union of int and void*
+        __unused1: *mut ::c_void,       //actually a function pointer
+        pub sigev_notify_attributes: *mut ::pthread_attr_t
+    }
 }
 
 pub const _UTX_USERSIZE: usize = 256;
@@ -1331,6 +1349,20 @@ pub const PRIO_DARWIN_NONUI: ::c_int = 0x1001;
 
 pub const SEM_FAILED: *mut sem_t = -1isize as *mut ::sem_t;
 
+pub const SIGEV_NONE: ::c_int = 0;
+pub const SIGEV_SIGNAL: ::c_int = 1;
+pub const SIGEV_THREAD: ::c_int = 3;
+
+pub const AIO_CANCELED: ::c_int = 2;
+pub const AIO_NOTCANCELED: ::c_int = 4;
+pub const AIO_ALLDONE: ::c_int = 1;
+pub const AIO_LISTIO_MAX: ::c_int = 16;
+pub const LIO_NOP: ::c_int = 0;
+pub const LIO_WRITE: ::c_int = 2;
+pub const LIO_READ: ::c_int = 1;
+pub const LIO_WAIT: ::c_int = 2;
+pub const LIO_NOWAIT: ::c_int = 1;
+
 f! {
     pub fn WSTOPSIG(status: ::c_int) -> ::c_int {
         status >> 8
@@ -1354,6 +1386,17 @@ f! {
 }
 
 extern {
+    pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
+    pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
+    pub fn aio_suspend(aiocb_list: *const *const aiocb, nitems: ::c_int,
+                       timeout: *const ::timespec) -> ::c_int;
+    pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
+                      nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
+
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
 
     pub fn getutxent() -> *mut utmpx;

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -15,6 +15,18 @@ pub type fsblkcnt_t = u64;
 pub type fsfilcnt_t = u64;
 
 s! {
+    pub struct aiocb {
+        pub aio_fildes: ::c_int,
+        pub aio_offset: ::off_t,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nbytes: ::size_t,
+        pub aio_sigevent: sigevent,
+        pub aio_lio_opcode: ::c_int,
+        pub aio_reqprio: ::c_int,
+        _aio_val: ::c_int,
+        _aio_err: ::c_int
+    }
+
     pub struct dirent {
         pub d_fileno: ::ino_t,
         pub d_namlen: u16,
@@ -33,6 +45,15 @@ s! {
         pub node: [u8; 6],
     }
 
+    pub struct sigevent {
+        pub sigev_notify: ::c_int,
+        pub sigev_signo: ::c_int,       //actually a union
+        #[cfg(target_pointer_width = "64")]
+        __unused1: ::c_int,
+        pub sigev_value: ::intptr_t,    //actually a union of int and void*
+        __unused2: *mut ::c_void        //actually a function pointer
+    }
+
     pub struct statvfs {
         pub f_bsize: ::c_ulong,
         pub f_frsize: ::c_ulong,

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -1,6 +1,7 @@
 pub type fflags_t = u32;
 pub type clock_t = i32;
 pub type ino_t = u32;
+pub type lwpid_t = u32;
 pub type nlink_t = u16;
 pub type blksize_t = u32;
 pub type clockid_t = ::c_int;
@@ -9,6 +10,22 @@ pub type fsblkcnt_t = ::uint64_t;
 pub type fsfilcnt_t = ::uint64_t;
 
 s! {
+    pub struct aiocb {
+        pub aio_fildes: ::c_int,
+        pub aio_offset: ::off_t,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nbytes: ::size_t,
+        __unused1: [::c_int; 2],
+        __unused2: *mut ::c_void,
+        pub aio_lio_opcode: ::c_int,
+        pub aio_reqprio: ::c_int,
+        // unused 3 through 5 are the __aiocb_private structure
+        __unused3: ::c_long,
+        __unused4: ::c_long,
+        __unused5: *mut ::c_void,
+        pub aio_sigevent: sigevent
+    }
+
     pub struct dirent {
         pub d_fileno: u32,
         pub d_reclen: u16,
@@ -17,6 +34,18 @@ s! {
         pub d_name: [::c_char; 256],
     }
 
+    pub struct sigevent {
+        pub sigev_notify: ::c_int,
+        pub sigev_signo: ::c_int,
+        pub sigev_value: ::intptr_t,    //actually a union of int and void*
+        //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,
@@ -32,6 +61,8 @@ s! {
     }
 }
 
+pub const SIGEV_THREAD_ID: ::c_int = 4;
+
 pub const RAND_MAX: ::c_int = 0x7fff_fffd;
 pub const PTHREAD_STACK_MIN: ::size_t = 2048;
 pub const SIGSTKSZ: ::size_t = 34816;

src/unix/bsd/freebsdlike/mod.rs

@@ -176,6 +176,21 @@ s! {
     }
 }
 
+pub const AIO_LISTIO_MAX: ::c_int = 16;
+pub const AIO_CANCELED: ::c_int = 1;
+pub const AIO_NOTCANCELED: ::c_int = 2;
+pub const AIO_ALLDONE: ::c_int = 3;
+pub const LIO_NOP: ::c_int = 0;
+pub const LIO_WRITE: ::c_int = 1;
+pub const LIO_READ: ::c_int = 2;
+pub const LIO_WAIT: ::c_int = 1;
+pub const LIO_NOWAIT: ::c_int = 0;
+
+pub const SIGEV_NONE: ::c_int = 0;
+pub const SIGEV_SIGNAL: ::c_int = 1;
+pub const SIGEV_THREAD: ::c_int = 2;
+pub const SIGEV_KEVENT: ::c_int = 3;
+
 pub const EMPTY: ::c_short = 0;
 pub const BOOT_TIME: ::c_short = 1;
 pub const OLD_TIME: ::c_short = 2;
@@ -745,6 +760,19 @@ extern {
 
 #[link(name = "util")]
 extern {
+    pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
+    pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
+    pub fn aio_suspend(aiocb_list: *const *const aiocb, nitems: ::c_int,
+                       timeout: *const ::timespec) -> ::c_int;
+    pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
+                      nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
+    pub fn aio_waitcomplete(iocbp: *mut *mut aiocb,
+                            timeout: *mut ::timespec) -> ::ssize_t;
+
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
                        host: *mut ::c_char,

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -6,6 +6,19 @@ pub type fsblkcnt_t = ::uint64_t;
 pub type fsfilcnt_t = ::uint64_t;
 
 s! {
+    pub struct aiocb {
+        pub aio_offset: ::off_t,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nbytes: ::size_t,
+        pub aio_fildes: ::c_int,
+        pub aio_lio_opcode: ::c_int,
+        pub aio_reqprio: ::c_int,
+        pub aio_sigevent: ::sigevent,
+        _state: ::c_int,
+        _errno: ::c_int,
+        _retval: ::ssize_t
+    }
+
     pub struct dirent {
         pub d_fileno: ::ino_t,
         pub d_reclen: u16,
@@ -30,6 +43,14 @@ s! {
         __unused8: *mut ::c_void,
     }
 
+    pub struct sigevent {
+        pub sigev_notify: ::c_int,
+        pub sigev_signo: ::c_int,
+        pub sigev_value: ::intptr_t,    //actually a union of int and void*
+        __unused1: *mut ::c_void,       //actually a function pointer
+        pub sigev_notify_attributes: *mut ::c_void
+    }
+
     pub struct sigset_t {
         __bits: [u32; 4],
     }
@@ -549,7 +570,32 @@ pub const KERN_PROC_RGID: ::c_int = 8;
 
 pub const EAI_SYSTEM: ::c_int = 11;
 
+pub const AIO_LISTIO_MAX: ::c_int = 512;
+pub const AIO_CANCELED: ::c_int = 1;
+pub const AIO_NOTCANCELED: ::c_int = 2;
+pub const AIO_ALLDONE: ::c_int = 3;
+pub const LIO_NOP: ::c_int = 0;
+pub const LIO_WRITE: ::c_int = 1;
+pub const LIO_READ: ::c_int = 2;
+pub const LIO_WAIT: ::c_int = 1;
+pub const LIO_NOWAIT: ::c_int = 0;
+
+pub const SIGEV_NONE: ::c_int = 0;
+pub const SIGEV_SIGNAL: ::c_int = 1;
+pub const SIGEV_THREAD: ::c_int = 2;
+
 extern {
+    pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
+    pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
+    pub fn aio_suspend(aiocb_list: *const *const aiocb, nitems: ::c_int,
+                       timeout: *const ::timespec) -> ::c_int;
+    pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
+                      nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
+
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,

src/unix/notbsd/mod.rs

@@ -163,6 +163,35 @@ s! {
         pub int_p_sign_posn: ::c_char,
         pub int_n_sign_posn: ::c_char,
     }
+
+    pub struct sigevent {
+        pub sigev_value: ::intptr_t,    //actually a union of int and void*
+        pub sigev_signo: ::c_int,
+        pub sigev_notify: ::c_int,
+        // Actually a union.  We only expose _tid because it's the most useful
+        // member
+        pub _tid: ::c_int,
+        #[cfg(target_pointer_width = "64")]
+        __unused1: [::c_int; 11],
+        #[cfg(target_pointer_width = "32")]
+        __unused1: [::c_int; 12]
+    }
+
+    pub struct aiocb {
+        pub aio_fildes: ::c_int,
+        pub aio_lio_opcode: ::c_int,
+        pub aio_reqprio: ::c_int,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nbytes: ::size_t,
+        pub aio_sigevent: sigevent,
+        __next_prio: *mut aiocb,
+        __abs_prio: ::c_int,
+        __policy: ::c_int,
+        __error_code: ::c_int,
+        __return_value: ::ssize_t,
+        pub aio_offset: off_t,
+        __glibc_reserved: [::c_char; 32]
+    }
 }
 
 // intentionally not public, only used for fd_set
@@ -632,6 +661,20 @@ pub const PIPE_BUF: usize = 4096;
 
 pub const SI_LOAD_SHIFT: ::c_uint = 16;
 
+pub const SIGEV_SIGNAL: ::c_int = 0;
+pub const SIGEV_NONE: ::c_int = 1;
+pub const SIGEV_THREAD: ::c_int = 2;
+pub const SIGEV_THREAD_ID: ::c_int = 4;
+
+pub const AIO_CANCELED: ::c_int = 0;
+pub const AIO_NOTCANCELED: ::c_int = 1;
+pub const AIO_ALLDONE: ::c_int = 2;
+pub const LIO_READ: ::c_int = 0;
+pub const LIO_WRITE: ::c_int = 1;
+pub const LIO_NOP: ::c_int = 2;
+pub const LIO_WAIT: ::c_int = 0;
+pub const LIO_NOWAIT: ::c_int = 1;
+
 f! {
     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
         let fd = fd as usize;
@@ -689,6 +732,17 @@ f! {
 }
 
 extern {
+    pub fn aio_read(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_write(aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_fsync(op: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn aio_error(aiocbp: *const aiocb) -> ::c_int;
+    pub fn aio_return(aiocbp: *mut aiocb) -> ::ssize_t;
+    pub fn aio_suspend(aiocb_list: *const *const aiocb, nitems: ::c_int,
+                       timeout: *const ::timespec) -> ::c_int;
+    pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
+    pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
+                      nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
+
     pub fn getpwnam_r(name: *const ::c_char,
                       pwd: *mut passwd,
                       buf: *mut ::c_char,