feat(headers): stddef/stdint/stdbool/limits/float/assert + features wiring

include/sys/types.h

@@ -0,0 +1,77 @@
+#ifndef VLIBC_SYS_TYPES_H
+#define VLIBC_SYS_TYPES_H
+
+/*
+ * vlibc — <sys/types.h>.
+ *
+ * The POSIX base scalar types. This public header is authoritative for
+ * public consumers; src/internal/types.h mirrors the same x86_64 LP64
+ * choices for internal use (both agree today — see the learnings note).
+ * Widths follow the Linux x86_64 ABI, not the ISO minimums: long is 64-bit.
+ */
+
+#include <vlibc/features.h>
+
+#include <stddef.h>
+
+#if VLIBC_HAS_HEADER_SYS_TYPES_H
+
+/* Signed type for byte counts and read()/write() results (x86_64: long). */
+typedef __PTRDIFF_TYPE__ ssize_t;
+
+/* Calendar time in seconds. */
+typedef long time_t;
+
+/* Clock ticks (times(2)). */
+typedef long clock_t;
+
+/* Clock id (clock_gettime(2)). */
+typedef int clockid_t;
+
+/* Timer id (timer_create(2)). */
+typedef void *timer_t;
+
+/* Process ID. */
+typedef int pid_t;
+
+/* User and group IDs. */
+typedef unsigned int uid_t;
+typedef unsigned int gid_t;
+
+/* General identifier. */
+typedef unsigned int id_t;
+
+/* System V IPC key. */
+typedef int key_t;
+
+/* File offset. */
+typedef long off_t;
+
+/* File mode bits (and permissions). */
+typedef unsigned int mode_t;
+
+/* Device and inode numbers. */
+typedef unsigned long long dev_t;
+typedef unsigned long long ino_t;
+
+/* Hard link count. */
+typedef unsigned long long nlink_t;
+
+/* Block counts and sizes. */
+typedef long blkcnt_t;
+typedef long blksize_t;
+
+/* File-system block and file counts (statvfs). */
+typedef unsigned long fsblkcnt_t;
+typedef unsigned long fsfilcnt_t;
+
+/* Microsecond intervals (timeval). */
+typedef long suseconds_t;
+typedef unsigned int useconds_t;
+
+/* Socket address lengths. */
+typedef unsigned int socklen_t;
+
+#endif /* VLIBC_HAS_HEADER_SYS_TYPES_H */
+
+#endif /* VLIBC_SYS_TYPES_H */