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const MAP_SHARED: c_int = 1; +pub const MAP_PRIVATE: c_int = 2; +pub const MAP_ANON: c_int = 4; pub const MAP_ANONYMOUS: c_int = MAP_ANON; diff --git a/src/platform/redox/mod.rs b/src/platform/redox/mod.rs index 1624000473..e39503b053 100644 --- a/src/platform/redox/mod.rs +++ b/src/platform/redox/mod.rs @@ -1,10 +1,9 @@ //! sys/socket implementation, following http://pubs.opengroup.org/onlinepubs/009696699/basedefs/sys/socket.h.html -use alloc::collections::BTreeMap; use cbitset::BitSet; use core::result::Result as CoreResult; use core::{mem, ptr, slice}; -use spin::{Mutex, MutexGuard, Once}; +use syscall::data::Map; use syscall::data::Stat as redox_stat; use syscall::data::StatVfs as redox_statvfs; use syscall::data::TimeSpec as redox_timespec; @@ -16,6 +15,7 @@ use header::dirent::dirent; use header::errno::{EINVAL, EIO, EPERM}; use header::fcntl; use header::poll::{self, nfds_t, pollfd}; +use header::sys_mman::MAP_ANON; use header::sys_select::fd_set; use header::sys_stat::stat; use header::sys_statvfs::statvfs; @@ -35,16 +35,6 @@ mod pte; mod signal; mod socket; -const MAP_ANON: c_int = 1; - -static ANONYMOUS_MAPS: Once>> = Once::new(); - -fn anonymous_maps() -> MutexGuard<'static, BTreeMap> { - ANONYMOUS_MAPS - .call_once(|| Mutex::new(BTreeMap::new())) - .lock() -} - fn e(sys: Result) -> usize { match sys { Ok(ok) => ok, @@ -625,27 +615,30 @@ impl Pal for Sys { unsafe fn mmap( _addr: *mut c_void, len: usize, - _prot: c_int, + prot: c_int, flags: c_int, fildes: c_int, off: off_t, ) -> *mut c_void { + let map = Map { + offset: off as usize, + size: len, + flags: ((prot as usize) << 16) | ((flags as usize) & 0xFFFF) + }; + if flags & MAP_ANON == MAP_ANON { let fd = e(syscall::open("memory:", syscall::O_STAT | syscall::O_CLOEXEC)); // flags don't matter currently if fd == !0 { return !0 as *mut c_void; } - let addr = e(syscall::fmap(fd, off as usize, len as usize)); - if addr == !0 { - let _ = syscall::close(fd); - return !0 as *mut c_void; - } + let addr = e(syscall::fmap(fd, &map)) as *mut c_void; - anonymous_maps().insert(addr as usize, fd); - addr as *mut c_void + let _ = syscall::close(fd); + + addr } else { - e(syscall::fmap(fildes as usize, off as usize, len as usize)) as *mut c_void + e(syscall::fmap(fildes as usize, &map)) as *mut c_void } } @@ -653,9 +646,6 @@ impl Pal for Sys { if e(syscall::funmap(addr as usize)) == !0 { return !0; } - if let Some(fd) = anonymous_maps().remove(&(addr as usize)) { - let _ = syscall::close(fd); - } 0 }