extensive header cleanup for standards conformance & correctness

thanks to Peter Mazinger (psm) for pointing many of these issues out
and submitting a patch on which this commit is loosely based

include/bits/alltypes.h.sh

@@ -68,9 +68,9 @@ TYPEDEF long long          intmax_t;
 TYPEDEF unsigned long long uintmax_t;
 
 TYPEDEF long time_t;
-TYPEDEF unsigned int useconds_t;
+TYPEDEF unsigned useconds_t;
 TYPEDEF int suseconds_t;
-STRUCT timeval { time_t tv_sec; long tv_usec; };
+STRUCT timeval { time_t tv_sec; int tv_usec; };
 STRUCT timespec { time_t tv_sec; long tv_nsec; };
 
 TYPEDEF int pid_t;
@@ -111,5 +111,6 @@ TYPEDEF int nl_item;
 
 TYPEDEF struct __locale * locale_t;
 
+STRUCT iovec { void *iov_base; size_t iov_len; };
 
 EOF

include/bits/socket.h

-struct iovec;
-
 struct msghdr
 {
 	void *msg_name;

include/bits/stat.h

@@ -15,11 +15,8 @@ struct stat
 	off_t st_size;
 	blksize_t st_blksize;
 	blkcnt_t st_blocks;
-	time_t st_atime;
-	unsigned long __st_atime_nsec;
-	time_t st_mtime;
-	unsigned long __st_mtime_nsec;
-	time_t st_ctime;
-	unsigned long __st_ctime_nsec;
+	struct timespec st_atim;
+	struct timespec st_mtim;
+	struct timespec st_ctim;
 	ino_t st_ino;
 };

include/bits/uio.h

-struct iovec {
-	void *iov_base;
-	size_t iov_len;
-};

include/bits/wait.h

@@ -6,6 +6,8 @@
 #define WCONTINUED 8
 #define WNOWAIT    0x1000000
 
+#if defined(__XOPEN_SOURCE) || defined(__GNU_SOURCE)
 #define P_ALL  0
 #define P_PID  1
 #define P_PGID 2
+#endif

include/ctype.h

@@ -16,12 +16,6 @@ int   isxdigit(int);
 int   tolower(int);
 int   toupper(int);
 
-int   isascii(int);
-int   toascii(int);
-
-#define _tolower(a) ((a)|0x20)
-#define _toupper(a) ((a)&0x5f)
-
 #define isalpha(a) ((unsigned)(((a)|32)-'a') < 26)
 #define isdigit(a) ((unsigned)((a)-'0') < 10)
 #define islower(a) ((unsigned)((a)-'a') < 26)
@@ -29,7 +23,10 @@ int   toascii(int);
 #define isprint(a) ((unsigned)((a)-0x20) < 0x5f)
 #define isgraph(a) ((unsigned)((a)-0x21) < 0x5e)
 
-#if 1
+
+
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
 
 #define __NEED_locale_t
 #include <bits/alltypes.h>
@@ -48,6 +45,12 @@ int   isupper_l(int, locale_t);
 int   isxdigit_l(int, locale_t);
 int   tolower_l(int, locale_t);
 int   toupper_l(int, locale_t);
+
+int   isascii(int);
+int   toascii(int);
+#define _tolower(a) ((a)|0x20)
+#define _toupper(a) ((a)&0x5f)
+
 #endif
 
 #endif

include/langinfo.h

@@ -6,6 +6,7 @@ extern "C" {
 #endif
 
 #define __NEED_nl_item
+#define __NEED_locale_t
 
 #include <bits/alltypes.h>
 
@@ -77,6 +78,7 @@ extern "C" {
 #define NOSTR 0x50003
 
 char *nl_langinfo(nl_item);
+char *nl_langinfo_l(nl_item, locale_t);
 
 #ifdef __cplusplus
 }

include/limits.h

@@ -49,6 +49,8 @@
 #define NL_SETMAX 255
 #define NL_TEXTMAX 2048
 
+#endif
+
 /* POSIX/SUS requirements follow. These numbers come directly
  * from SUS and have nothing to do with the host system. */
 
@@ -56,6 +58,7 @@
 #define _POSIX_AIO_MAX          1
 #define _POSIX_ARG_MAX          4096
 #define _POSIX_CHILD_MAX        25
+#define _POSIX_CLOCKRES_MIN     20000000
 #define _POSIX_DELAYTIMER_MAX   32
 #define _POSIX_HOST_NAME_MAX    255
 #define _POSIX_LINK_MAX         8
@@ -104,5 +107,3 @@
 #define _XOPEN_PATH_MAX         1024
 
 #endif
-
-#endif

include/math.h

@@ -6,20 +6,6 @@
 #define __NEED___uint64_t
 #include <bits/alltypes.h>
 
-#define M_E             2.7182818284590452354   /* e */
-#define M_LOG2E         1.4426950408889634074   /* log_2 e */
-#define M_LOG10E        0.43429448190325182765  /* log_10 e */
-#define M_LN2           0.69314718055994530942  /* log_e 2 */
-#define M_LN10          2.30258509299404568402  /* log_e 10 */
-#define M_PI            3.14159265358979323846  /* pi */
-#define M_PI_2          1.57079632679489661923  /* pi/2 */
-#define M_PI_4          0.78539816339744830962  /* pi/4 */
-#define M_1_PI          0.31830988618379067154  /* 1/pi */
-#define M_2_PI          0.63661977236758134308  /* 2/pi */
-#define M_2_SQRTPI      1.12837916709551257390  /* 2/sqrt(pi) */
-#define M_SQRT2         1.41421356237309504880  /* sqrt(2) */
-#define M_SQRT1_2       0.70710678118654752440  /* 1/sqrt(2) */
-
 #define __MAKE_FLOAT(i) (((union { int __i; float __f; }){ .__i = i }).__f)
 
 #define NAN       __MAKE_FLOAT(0x7fc00000)
@@ -286,15 +272,31 @@ double      trunc(double);
 float       truncf(float);
 long double truncl(long double);
 
-/* XSI stuff */
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#define M_E             2.7182818284590452354   /* e */
+#define M_LOG2E         1.4426950408889634074   /* log_2 e */
+#define M_LOG10E        0.43429448190325182765  /* log_10 e */
+#define M_LN2           0.69314718055994530942  /* log_e 2 */
+#define M_LN10          2.30258509299404568402  /* log_e 10 */
+#define M_PI            3.14159265358979323846  /* pi */
+#define M_PI_2          1.57079632679489661923  /* pi/2 */
+#define M_PI_4          0.78539816339744830962  /* pi/4 */
+#define M_1_PI          0.31830988618379067154  /* 1/pi */
+#define M_2_PI          0.63661977236758134308  /* 2/pi */
+#define M_2_SQRTPI      1.12837916709551257390  /* 2/sqrt(pi) */
+#define M_SQRT2         1.41421356237309504880  /* sqrt(2) */
+#define M_SQRT1_2       0.70710678118654752440  /* 1/sqrt(2) */
 double      j0(double);
 double      j1(double);
 double      jn(int, double);
-double      scalb(double, double);
 double      y0(double);
 double      y1(double);
 double      yn(int, double);
-
 extern int signgam;
+#endif
+
+#ifdef _GNU_SOURCE
+double      scalb(double, double);
+#endif
 
 #endif

include/setjmp.h

@@ -6,19 +6,27 @@ extern "C" {
 #endif
 
 #include <bits/setjmp.h>
-typedef unsigned long sigjmp_buf[(1024+sizeof(jmp_buf))/sizeof(long)];
 
+
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+typedef unsigned long sigjmp_buf[(1024+sizeof(jmp_buf))/sizeof(long)];
 #ifdef _GNU_SOURCE
 #define jmp_buf sigjmp_buf
 #endif
+int sigsetjmp (sigjmp_buf, int);
+void siglongjmp (sigjmp_buf, int);
+#endif
 
-int setjmp (jmp_buf);
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
 int _setjmp (jmp_buf);
-int sigsetjmp (sigjmp_buf, int);
+void _longjmp (jmp_buf, int);
+#endif
+
 
+int setjmp (jmp_buf);
 void longjmp (jmp_buf, int);
-void _longjmp (jmp_buf, int);
-void siglongjmp (sigjmp_buf, int);
 
 #define setjmp setjmp
 #define longjmp longjmp

include/strings.h

@@ -5,13 +5,6 @@
 extern "C" {
 #endif
 
-#undef NULL
-#ifdef __cplusplus
-#define NULL 0
-#else
-#define NULL ((void*)0)
-#endif
-
 
 #define __NEED_size_t
 #include <bits/alltypes.h>

include/sys/socket.h

@@ -11,6 +11,7 @@ extern "C" {
 #define __NEED_uid_t
 #define __NEED_pid_t
 #define __NEED_gid_t
+#define __NEED_struct_iovec
 
 #include <bits/alltypes.h>
 

include/sys/stat.h

@@ -14,11 +14,16 @@ extern "C" {
 #define __NEED_time_t
 #define __NEED_blksize_t
 #define __NEED_blkcnt_t
+#define __NEED_struct_timespec
 
 #include <bits/alltypes.h>
 
 #include <bits/stat.h>
 
+#define st_atime st_atim.tv_sec
+#define st_mtime st_mtim.tv_sec
+#define st_ctime st_ctim.tv_sec
+
 #define S_IFMT  0170000
 
 #define S_IFDIR 0040000

include/sys/time.h

@@ -9,7 +9,7 @@ extern "C" {
 
 #define __NEED_time_t
 #define __NEED_suseconds_t
-#define __NEED_timeval
+#define __NEED_struct_timeval
 
 #include <bits/alltypes.h>
 

include/sys/uio.h

@@ -3,11 +3,10 @@
 
 #define __NEED_size_t
 #define __NEED_ssize_t
+#define __NEED_struct_iovec
 
 #include <bits/alltypes.h>
 
-#include <bits/uio.h>
-
 ssize_t readv (int, const struct iovec *, int);
 ssize_t writev (int, const struct iovec *, int);