1 files changed, 69 insertions, 0 deletions
diff --git a/ext/wasm/api/sqlite3-wasi.h b/ext/wasm/api/sqlite3-wasi.h
new file mode 100644
index 0000000..096f45d
--- /dev/null
+++ b/ext/wasm/api/sqlite3-wasi.h
@@ -0,0 +1,69 @@
+/**
+   Dummy function stubs to get sqlite3.c compiling with
+   wasi-sdk. This requires, in addition:
+
+   -D_WASI_EMULATED_MMAN -D_WASI_EMULATED_GETPID
+
+   -lwasi-emulated-getpid
+*/
+typedef unsigned mode_t;
+int fchmod(int fd, mode_t mode);
+int fchmod(int fd, mode_t mode){
+  return (fd && mode) ? 0 : 0;
+}
+typedef unsigned uid_t;
+typedef uid_t gid_t;
+int fchown(int fd, uid_t owner, gid_t group);
+int fchown(int fd, uid_t owner, gid_t group){
+  return (fd && owner && group) ? 0 : 0;
+}
+uid_t geteuid(void);
+uid_t geteuid(void){return 0;}
+#if !defined(F_WRLCK)
+enum {
+F_WRLCK,
+F_RDLCK,
+F_GETLK,
+F_SETLK,
+F_UNLCK
+};
+#endif
+
+#undef HAVE_PREAD
+
+#include <wasi/api.h>
+#define WASM__KEEP __attribute__((used))
+
+#if 0
+/**
+   wasi-sdk cannot build sqlite3's default VFS without at least the following
+   functions. They are apparently syscalls which clients have to implement or
+   otherwise obtain.
+
+   https://github.com/WebAssembly/WASI/blob/main/phases/snapshot/docs.md
+*/
+environ_get
+environ_sizes_get
+clock_time_get
+fd_close
+fd_fdstat_get
+fd_fdstat_set_flags
+fd_filestat_get
+fd_filestat_set_size
+fd_pread
+fd_prestat_get
+fd_prestat_dir_name
+fd_read
+fd_seek
+fd_sync
+fd_write
+path_create_directory
+path_filestat_get
+path_filestat_set_times
+path_open
+path_readlink
+path_remove_directory
+path_unlink_file
+poll_oneoff
+proc_exit
+#endif