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diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -89,6 +89,7 @@
glob.c \
glob-compat11.c \
initgroups.c \
+ inotify.c \
isatty.c \
isinf.c \
isnan.c \
diff --git a/lib/libc/gen/Symbol.map b/lib/libc/gen/Symbol.map
--- a/lib/libc/gen/Symbol.map
+++ b/lib/libc/gen/Symbol.map
@@ -464,6 +464,9 @@
fdscandir_b;
fts_open_b;
glob_b;
+ inotify_add_watch;
+ inotify_init;
+ inotify_init1;
psiginfo;
rtld_get_var;
rtld_set_var;
diff --git a/lib/libc/gen/inotify.c b/lib/libc/gen/inotify.c
new file mode 100644
--- /dev/null
+++ b/lib/libc/gen/inotify.c
@@ -0,0 +1,48 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 Klara, Inc.
+ */
+
+#include "namespace.h"
+#include <sys/fcntl.h>
+#include <sys/inotify.h>
+#include <sys/specialfd.h>
+#include "un-namespace.h"
+#include "libc_private.h"
+
+/*
+ * Provide compatibility with libinotify, which uses different values for these
+ * flags.
+ */
+#define IN_NONBLOCK_OLD 0x80000
+#define IN_CLOEXEC_OLD 0x00800
+
+int
+inotify_add_watch(int fd, const char *pathname, uint32_t mask)
+{
+ return (inotify_add_watch_at(fd, AT_FDCWD, pathname, mask));
+}
+
+int
+inotify_init1(int flags)
+{
+ struct specialfd_inotify args;
+
+ if ((flags & IN_NONBLOCK_OLD) != 0) {
+ flags &= ~IN_NONBLOCK_OLD;
+ flags |= IN_NONBLOCK;
+ }
+ if ((flags & IN_CLOEXEC_OLD) != 0) {
+ flags &= ~IN_CLOEXEC_OLD;
+ flags |= IN_CLOEXEC;
+ }
+ args.flags = flags;
+ return (__sys___specialfd(SPECIALFD_INOTIFY, &args, sizeof(args)));
+}
+
+int
+inotify_init(void)
+{
+ return (inotify_init1(0));
+}

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