diff options
7 files changed, 68 insertions, 25 deletions
diff --git a/src/tools/miri/ci/ci.sh b/src/tools/miri/ci/ci.sh index 689bc6d46fc..ad1b2f4d0c3 100755 --- a/src/tools/miri/ci/ci.sh +++ b/src/tools/miri/ci/ci.sh @@ -150,10 +150,10 @@ case $HOST_TARGET in # Partially supported targets (tier 2) BASIC="empty_main integer heap_alloc libc-mem vec string btreemap" # ensures we have the basics: pre-main code, system allocator UNIX="hello panic/panic panic/unwind concurrency/simple atomic libc-mem libc-misc libc-random env num_cpus" # the things that are very similar across all Unixes, and hence easily supported there - TEST_TARGET=x86_64-unknown-freebsd run_tests_minimal $BASIC $UNIX time hashmap random threadname pthread fs - TEST_TARGET=i686-unknown-freebsd run_tests_minimal $BASIC $UNIX time hashmap random threadname pthread fs - TEST_TARGET=x86_64-unknown-illumos run_tests_minimal $BASIC $UNIX time hashmap random thread sync available-parallelism tls - TEST_TARGET=x86_64-pc-solaris run_tests_minimal $BASIC $UNIX time hashmap random thread sync available-parallelism tls + TEST_TARGET=x86_64-unknown-freebsd run_tests_minimal $BASIC $UNIX time hashmap random threadname pthread fs libc-pipe + TEST_TARGET=i686-unknown-freebsd run_tests_minimal $BASIC $UNIX time hashmap random threadname pthread fs libc-pipe + TEST_TARGET=x86_64-unknown-illumos run_tests_minimal $BASIC $UNIX time hashmap random thread sync available-parallelism tls libc-pipe + TEST_TARGET=x86_64-pc-solaris run_tests_minimal $BASIC $UNIX time hashmap random thread sync available-parallelism tls libc-pipe TEST_TARGET=aarch64-linux-android run_tests_minimal $BASIC $UNIX time hashmap pthread --skip threadname TEST_TARGET=wasm32-wasip2 run_tests_minimal $BASIC wasm TEST_TARGET=wasm32-unknown-unknown run_tests_minimal no_std empty_main wasm # this target doesn't really have std diff --git a/src/tools/miri/src/shims/unix/foreign_items.rs b/src/tools/miri/src/shims/unix/foreign_items.rs index 908f91a3bd6..7ba98981920 100644 --- a/src/tools/miri/src/shims/unix/foreign_items.rs +++ b/src/tools/miri/src/shims/unix/foreign_items.rs @@ -292,6 +292,13 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { this.write_scalar(result, dest)?; } "pipe2" => { + // Currently this function does not exist on all Unixes, e.g. on macOS. + if !matches!(&*this.tcx.sess.target.os, "linux" | "freebsd" | "solaris" | "illumos") { + throw_unsup_format!( + "`pipe2` is not supported on {}", + this.tcx.sess.target.os + ); + } let [pipefd, flags] = this.check_shim(abi, Abi::C { unwind: false }, link_name, args)?; let result = this.pipe2(pipefd, Some(flags))?; diff --git a/src/tools/miri/src/shims/unix/unnamed_socket.rs b/src/tools/miri/src/shims/unix/unnamed_socket.rs index e83c0afb287..d0eba1eacd1 100644 --- a/src/tools/miri/src/shims/unix/unnamed_socket.rs +++ b/src/tools/miri/src/shims/unix/unnamed_socket.rs @@ -163,7 +163,7 @@ impl FileDescription for AnonSocket { } else { // Blocking socketpair with writer and empty buffer. // FIXME: blocking is currently not supported - throw_unsup_format!("socketpair read: blocking isn't supported yet"); + throw_unsup_format!("socketpair/pipe/pipe2 read: blocking isn't supported yet"); } } } @@ -230,7 +230,7 @@ impl FileDescription for AnonSocket { return ecx.set_last_error_and_return(ErrorKind::WouldBlock, dest); } else { // Blocking socketpair with a full buffer. - throw_unsup_format!("socketpair write: blocking isn't supported yet"); + throw_unsup_format!("socketpair/pipe/pipe2 write: blocking isn't supported yet"); } } // Remember this clock so `read` can synchronize with us. @@ -267,21 +267,24 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let this = self.eval_context_mut(); let domain = this.read_scalar(domain)?.to_i32()?; - let mut type_ = this.read_scalar(type_)?.to_i32()?; + let mut flags = this.read_scalar(type_)?.to_i32()?; let protocol = this.read_scalar(protocol)?.to_i32()?; let sv = this.deref_pointer(sv)?; let mut is_sock_nonblock = false; - // Parse and remove the type flags that we support. - // SOCK_NONBLOCK only exists on Linux. + // Interpret the flag. Every flag we recognize is "subtracted" from `flags`, so + // if there is anything left at the end, that's an unsupported flag. if this.tcx.sess.target.os == "linux" { - if type_ & this.eval_libc_i32("SOCK_NONBLOCK") == this.eval_libc_i32("SOCK_NONBLOCK") { + // SOCK_NONBLOCK only exists on Linux. + let sock_nonblock = this.eval_libc_i32("SOCK_NONBLOCK"); + let sock_cloexec = this.eval_libc_i32("SOCK_CLOEXEC"); + if flags & sock_nonblock == sock_nonblock { is_sock_nonblock = true; - type_ &= !(this.eval_libc_i32("SOCK_NONBLOCK")); + flags &= !sock_nonblock; } - if type_ & this.eval_libc_i32("SOCK_CLOEXEC") == this.eval_libc_i32("SOCK_CLOEXEC") { - type_ &= !(this.eval_libc_i32("SOCK_CLOEXEC")); + if flags & sock_cloexec == sock_cloexec { + flags &= !sock_cloexec; } } @@ -294,11 +297,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { and AF_LOCAL are allowed", domain ); - } else if type_ != this.eval_libc_i32("SOCK_STREAM") { + } else if flags != this.eval_libc_i32("SOCK_STREAM") { throw_unsup_format!( "socketpair: type {:#x} is unsupported, only SOCK_STREAM, \ SOCK_CLOEXEC and SOCK_NONBLOCK are allowed", - type_ + flags ); } else if protocol != 0 { throw_unsup_format!( @@ -347,14 +350,26 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let this = self.eval_context_mut(); let pipefd = this.deref_pointer_as(pipefd, this.machine.layouts.i32)?; - let flags = match flags { + let mut flags = match flags { Some(flags) => this.read_scalar(flags)?.to_i32()?, None => 0, }; - // As usual we ignore CLOEXEC. let cloexec = this.eval_libc_i32("O_CLOEXEC"); - if flags != 0 && flags != cloexec { + let o_nonblock = this.eval_libc_i32("O_NONBLOCK"); + + // Interpret the flag. Every flag we recognize is "subtracted" from `flags`, so + // if there is anything left at the end, that's an unsupported flag. + let mut is_nonblock = false; + if flags & o_nonblock == o_nonblock { + is_nonblock = true; + flags &= !o_nonblock; + } + // As usual we ignore CLOEXEC. + if flags & cloexec == cloexec { + flags &= !cloexec; + } + if flags != 0 { throw_unsup_format!("unsupported flags in `pipe2`"); } @@ -365,13 +380,13 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { readbuf: Some(RefCell::new(Buffer::new())), peer_fd: OnceCell::new(), peer_lost_data: Cell::new(false), - is_nonblock: false, + is_nonblock, }); let fd1 = fds.new_ref(AnonSocket { readbuf: None, peer_fd: OnceCell::new(), peer_lost_data: Cell::new(false), - is_nonblock: false, + is_nonblock, }); // Make the file descriptions point to each other. diff --git a/src/tools/miri/tests/fail-dep/libc/socketpair_read_blocking.stderr b/src/tools/miri/tests/fail-dep/libc/socketpair_read_blocking.stderr index dff332f9992..16892614c63 100644 --- a/src/tools/miri/tests/fail-dep/libc/socketpair_read_blocking.stderr +++ b/src/tools/miri/tests/fail-dep/libc/socketpair_read_blocking.stderr @@ -1,8 +1,8 @@ -error: unsupported operation: socketpair read: blocking isn't supported yet +error: unsupported operation: socketpair/pipe/pipe2 read: blocking isn't supported yet --> tests/fail-dep/libc/socketpair_read_blocking.rs:LL:CC | LL | let _res = unsafe { libc::read(fds[1], buf.as_mut_ptr().cast(), buf.len() as libc::size_t) }; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ socketpair read: blocking isn't supported yet + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ socketpair/pipe/pipe2 read: blocking isn't supported yet | = help: this is likely not a bug in the program; it indicates that the program performed an operation that Miri does not support = note: BACKTRACE: diff --git a/src/tools/miri/tests/fail-dep/libc/socketpair_write_blocking.stderr b/src/tools/miri/tests/fail-dep/libc/socketpair_write_blocking.stderr index 0dd89a15c7c..a2fcf87578a 100644 --- a/src/tools/miri/tests/fail-dep/libc/socketpair_write_blocking.stderr +++ b/src/tools/miri/tests/fail-dep/libc/socketpair_write_blocking.stderr @@ -1,8 +1,8 @@ -error: unsupported operation: socketpair write: blocking isn't supported yet +error: unsupported operation: socketpair/pipe/pipe2 write: blocking isn't supported yet --> tests/fail-dep/libc/socketpair_write_blocking.rs:LL:CC | LL | let _ = unsafe { libc::write(fds[0], data as *const libc::c_void, 3) }; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ socketpair write: blocking isn't supported yet + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ socketpair/pipe/pipe2 write: blocking isn't supported yet | = help: this is likely not a bug in the program; it indicates that the program performed an operation that Miri does not support = note: BACKTRACE: diff --git a/src/tools/miri/tests/pass-dep/libc/libc-epoll-blocking.rs b/src/tools/miri/tests/pass-dep/libc/libc-epoll-blocking.rs index d7675a40163..9bcc776e281 100644 --- a/src/tools/miri/tests/pass-dep/libc/libc-epoll-blocking.rs +++ b/src/tools/miri/tests/pass-dep/libc/libc-epoll-blocking.rs @@ -161,7 +161,7 @@ fn test_epoll_race() { // Write to the eventfd instance. let sized_8_data: [u8; 8] = 1_u64.to_ne_bytes(); let res = unsafe { libc::write(fd, sized_8_data.as_ptr() as *const libc::c_void, 8) }; - // read returns number of bytes that have been read, which is always 8. + // write returns number of bytes written, which is always 8. assert_eq!(res, 8); }); thread::yield_now(); diff --git a/src/tools/miri/tests/pass-dep/libc/libc-pipe.rs b/src/tools/miri/tests/pass-dep/libc/libc-pipe.rs index 76f883e5d8d..01433edf9a3 100644 --- a/src/tools/miri/tests/pass-dep/libc/libc-pipe.rs +++ b/src/tools/miri/tests/pass-dep/libc/libc-pipe.rs @@ -7,6 +7,14 @@ fn main() { test_pipe_threaded(); test_race(); test_pipe_array(); + #[cfg(any( + target_os = "linux", + target_os = "illumos", + target_os = "freebsd", + target_os = "solaris" + ))] + // `pipe2` only exists in some specific os. + test_pipe2(); } fn test_pipe() { @@ -110,3 +118,16 @@ fn test_pipe_array() { let mut fds: [i32; 2] = [0; 2]; assert_eq!(unsafe { pipe(&mut fds) }, 0); } + +/// Test if pipe2 (including the O_NONBLOCK flag) is supported. +#[cfg(any( + target_os = "linux", + target_os = "illumos", + target_os = "freebsd", + target_os = "solaris" +))] +fn test_pipe2() { + let mut fds = [-1, -1]; + let res = unsafe { libc::pipe2(fds.as_mut_ptr(), libc::O_NONBLOCK) }; + assert_eq!(res, 0); +} |