youknowone · Sep 23, 2026 · Sep 23, 2026 · Sep 23, 2026 · Sep 23, 2026 · Sep 23, 2026
diff --git a/crates/host_env/src/posix.rs b/crates/host_env/src/posix.rs
@@ -172,6 +172,143 @@ pub use libc::{UTIME_NOW, UTIME_OMIT};
 #[cfg(target_os = "freebsd")]
 pub use libc::{SF_MNOWAIT, SF_NOCACHE, SF_NODISKIO, SF_SYNC};
 
+/// `pathconf` / `sysconf` names. The VM enum discriminants still took these
+/// from `libc`.
+#[cfg(unix)]
+pub use libc::{
+    _PC_CHOWN_RESTRICTED, _PC_LINK_MAX, _PC_MAX_CANON, _PC_MAX_INPUT, _PC_NAME_MAX, _PC_NO_TRUNC,
+    _PC_PATH_MAX, _PC_PIPE_BUF, _PC_VDISABLE, _SC_ARG_MAX, _SC_CHILD_MAX, _SC_CLK_TCK,
+    _SC_LOGIN_NAME_MAX, _SC_NGROUPS_MAX, _SC_OPEN_MAX, _SC_PAGE_SIZE, _SC_RE_DUP_MAX,
+    _SC_STREAM_MAX, _SC_TTY_NAME_MAX, _SC_TZNAME_MAX, _SC_VERSION,
+};
+
+#[cfg(any(
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox"
+))]
+pub use libc::_PC_FILESIZEBITS;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "solaris"
+))]
+pub use libc::_PC_2_SYMLINKS;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "openbsd",
+    target_os = "redox"
+))]
+pub use libc::_PC_ALLOC_SIZE_MIN;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "openbsd"
+))]
+pub use libc::_PC_REC_INCR_XFER_SIZE;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "linux",
+    target_os = "openbsd",
+    target_os = "redox"
+))]
+pub use libc::{_PC_REC_MAX_XFER_SIZE, _PC_REC_MIN_XFER_SIZE, _PC_REC_XFER_ALIGN};
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "solaris"
+))]
+pub use libc::_PC_SYMLINK_MAX;
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "solaris"
+))]
+pub use libc::{_PC_ASYNC_IO, _PC_PRIO_IO};
+
+#[cfg(any(
+    target_os = "android",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "illumos",
+    target_os = "linux",
+    target_os = "netbsd",
+    target_os = "openbsd",
+    target_os = "redox",
+    target_os = "solaris"
+))]
+pub use libc::_PC_SYNC_IO;
+
+#[cfg(any(target_os = "dragonfly", target_os = "openbsd"))]
+pub use libc::_PC_TIMESTAMP_RESOLUTION;
+
+#[cfg(all(unix, not(target_os = "redox")))]
+pub use libc::{
+    _SC_2_C_BIND, _SC_2_C_DEV, _SC_2_CHAR_TERM, _SC_2_FORT_DEV, _SC_2_FORT_RUN, _SC_2_LOCALEDEF,
+    _SC_2_SW_DEV, _SC_2_UPE, _SC_2_VERSION, _SC_AIO_LISTIO_MAX, _SC_AIO_MAX,
+    _SC_AIO_PRIO_DELTA_MAX, _SC_ASYNCHRONOUS_IO, _SC_ATEXIT_MAX, _SC_BC_BASE_MAX, _SC_BC_DIM_MAX,
+    _SC_BC_SCALE_MAX, _SC_BC_STRING_MAX, _SC_COLL_WEIGHTS_MAX, _SC_DELAYTIMER_MAX,
+    _SC_EXPR_NEST_MAX, _SC_FSYNC, _SC_GETGR_R_SIZE_MAX, _SC_GETPW_R_SIZE_MAX, _SC_IOV_MAX,
+    _SC_JOB_CONTROL, _SC_LINE_MAX, _SC_MAPPED_FILES, _SC_MEMLOCK, _SC_MEMLOCK_RANGE,
+    _SC_MEMORY_PROTECTION, _SC_MESSAGE_PASSING, _SC_MQ_OPEN_MAX, _SC_MQ_PRIO_MAX,
+    _SC_NPROCESSORS_CONF, _SC_NPROCESSORS_ONLN, _SC_PHYS_PAGES, _SC_PRIORITIZED_IO,
+    _SC_PRIORITY_SCHEDULING, _SC_REALTIME_SIGNALS, _SC_RTSIG_MAX, _SC_SAVED_IDS, _SC_SEM_NSEMS_MAX,
+    _SC_SEM_VALUE_MAX, _SC_SEMAPHORES, _SC_SHARED_MEMORY_OBJECTS, _SC_SIGQUEUE_MAX,
+    _SC_SYNCHRONIZED_IO, _SC_THREAD_ATTR_STACKADDR, _SC_THREAD_ATTR_STACKSIZE,
+    _SC_THREAD_DESTRUCTOR_ITERATIONS, _SC_THREAD_KEYS_MAX, _SC_THREAD_PRIO_INHERIT,
+    _SC_THREAD_PRIO_PROTECT, _SC_THREAD_PRIORITY_SCHEDULING, _SC_THREAD_PROCESS_SHARED,
+    _SC_THREAD_SAFE_FUNCTIONS, _SC_THREAD_STACK_MIN, _SC_THREAD_THREADS_MAX, _SC_THREADS,
+    _SC_TIMER_MAX, _SC_TIMERS, _SC_XOPEN_CRYPT, _SC_XOPEN_ENH_I18N, _SC_XOPEN_LEGACY,
+    _SC_XOPEN_REALTIME, _SC_XOPEN_REALTIME_THREADS, _SC_XOPEN_SHM, _SC_XOPEN_UNIX,
+    _SC_XOPEN_VERSION, _SC_XOPEN_XCU_VERSION,
+};
+
+#[cfg(any(
+    target_os = "linux",
+    target_vendor = "apple",
+    target_os = "netbsd",
+    target_os = "fuchsia"
+))]
+pub use libc::{
+    _SC_PASS_MAX, _SC_XBS5_ILP32_OFF32, _SC_XBS5_ILP32_OFFBIG, _SC_XBS5_LP64_OFF64,
+    _SC_XBS5_LPBIG_OFFBIG,
+};
+
+#[cfg(target_os = "redox")]
+pub use libc::{_SC_HOST_NAME_MAX, _SC_SYMLOOP_MAX};
+
 pub struct UnameInfo {
     pub sysname: String,
     pub nodename: String,

diff --git a/crates/host_env/src/signal.rs b/crates/host_env/src/signal.rs
@@ -20,6 +20,30 @@ pub const SIG_IGN: libc::sighandler_t = 1;
 #[cfg(not(unix))]
 pub const SIG_ERR: libc::sighandler_t = -1 as _;
 
+#[cfg(unix)]
+pub use libc::{SIG_BLOCK, SIG_SETMASK, SIG_UNBLOCK};
+
+#[cfg(any(unix, windows))]
+pub use libc::{SIGABRT, SIGFPE, SIGILL, SIGINT, SIGSEGV, SIGTERM};
+
+#[cfg(unix)]
+pub use libc::{
+    SIGALRM, SIGBUS, SIGCHLD, SIGCONT, SIGHUP, SIGIO, SIGKILL, SIGPIPE, SIGPROF, SIGQUIT, SIGSTOP,
+    SIGSYS, SIGTRAP, SIGTSTP, SIGTTIN, SIGTTOU, SIGURG, SIGUSR1, SIGUSR2, SIGVTALRM, SIGWINCH,
+    SIGXCPU, SIGXFSZ,
+};
+
+#[cfg(all(
+    unix,
+    not(any(
+        target_vendor = "apple",
+        target_os = "openbsd",
+        target_os = "freebsd",
+        target_os = "netbsd"
+    ))
+))]
+pub use libc::{SIGPWR, SIGSTKFLT};
+
 #[cfg(all(unix, not(target_os = "android")))]
 pub use libc::{ITIMER_PROF, ITIMER_REAL, ITIMER_VIRTUAL};