Require POSIX.1 (1990) compliance on unix

Assume unix platforms support the original POSIX.1 standard.
Specifically, assume that if G_OS_UNIX, then we have chown(),
getcwd(), getgrgid(), getpwuid(), link(), <grp.h>, <pwd.h>,
<sys/types.h>, <sys/uio.h>, <sys/wait.h>, and <unistd.h>.

Additionally, since all versions of Windows that we care about also
have <sys/types.h>, we can remove HAVE_SYS_TYPES_H checks everywhere.

Also remove one include of <sys/times.h>, and the corresponding
configure check, since the include is not currently needed (and may
always have just been a typo for <sys/time.h>).

https://bugzilla.gnome.org/show_bug.cgi?id=710519

config.h.win32.in

@@ -109,9 +109,6 @@
 /* define to 1 if Carbon is available */
 /* #undef HAVE_CARBON */
 
-/* Define to 1 if you have the `chown' function. */
-/* #undef HAVE_CHOWN */
-
 /* Define to 1 if you have the `clock_gettime' function. */
 /* #undef HAVE_CLOCK_GETTIME */
 
@@ -189,27 +186,18 @@
 /* we have the futex(2) system call */
 /* #undef HAVE_FUTEX */
 
-/* Define to 1 if you have the `getcwd' function. */
-#define HAVE_GETCWD 1
-
 /* Define to 1 if you have the `getc_unlocked' function. */
 /* #undef HAVE_GETC_UNLOCKED */
 
 /* Define to 1 if you have the `getfsstat' function. */
 /* #undef HAVE_GETFSSTAT */
 
-/* Define to 1 if you have the `getgrgid' function. */
-/* #undef HAVE_GETGRGID */
-
 /* Define to 1 if you have the `getmntent_r' function. */
 /* #undef HAVE_GETMNTENT_R */
 
 /* Define to 1 if you have the `getprotobyname_r' function. */
 /* #undef HAVE_GETPROTOBYNAME_R */
 
-/* Define to 1 if you have the `getpwuid' function. */
-/* #undef HAVE_GETPWUID */
-
 /* Define to 1 if you have the `getresuid' function. */
 /* #undef HAVE_GETRESUID */
 
@@ -225,9 +213,6 @@
 /* define to use system printf */
 /* #undef HAVE_GOOD_PRINTF */
 
-/* Define to 1 if you have the <grp.h> header file. */
-/* #undef HAVE_GRP_H */
-
 /* Define to 1 if you have the `hasmntopt' function. */
 /* #undef HAVE_HASMNTOPT */
 
@@ -311,9 +296,6 @@
 /* Define if libelf is available */
 /* #undef HAVE_LIBELF */
 
-/* Define to 1 if you have the `link' function. */
-/* #undef HAVE_LINK */
-
 /* Define to 1 if you have the <linux/magic.h> header file. */
 /* #undef HAVE_LINUX_MAGIC_H */
 
@@ -405,9 +387,6 @@
 /* Define to 1 if the system has the type `ptrdiff_t'. */
 #define HAVE_PTRDIFF_T 1
 
-/* Define to 1 if you have the <pwd.h> header file. */
-/* #undef HAVE_PWD_H */
-
 /* Define to 1 if you have the `readlink' function. */
 /* #undef HAVE_READLINK */
 
@@ -629,9 +608,6 @@
 /* Define to 1 if you have the <sys/sysctl.h> header file. */
 /* #undef HAVE_SYS_SYSCTL_H */
 
-/* Define to 1 if you have the <sys/times.h> header file. */
-/* #undef HAVE_SYS_TIMES_H */
-
 /* Define to 1 if you have the <sys/time.h> header file. */
 #ifndef _MSC_VER
 #define HAVE_SYS_TIME_H 1
@@ -639,12 +615,6 @@
 /* #undef HAVE_SYS_TIME_H */
 #endif /* _MSC_VER */
 
-/* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
-
-/* Define to 1 if you have the <sys/uio.h> header file. */
-/* #undef HAVE_SYS_UIO_H */
-
 /* Define to 1 if you have the <sys/vfstab.h> header file. */
 /* #undef HAVE_SYS_VFSTAB_H */
 
@@ -654,9 +624,6 @@
 /* Define to 1 if you have the <sys/vmount.h> header file. */
 /* #undef HAVE_SYS_VMOUNT_H */
 
-/* Define to 1 if you have the <sys/wait.h> header file. */
-/* #undef HAVE_SYS_WAIT_H */
-
 /* Define to 1 if you have the <sys/xattr.h> header file. */
 /* #undef HAVE_SYS_XATTR_H */
 

configure.ac

@@ -772,14 +772,14 @@ fi
 
 
 # check for header files
-AC_CHECK_HEADERS([dirent.h pwd.h grp.h sys/param.h sys/poll.h sys/resource.h])
+AC_CHECK_HEADERS([sys/param.h sys/poll.h sys/resource.h])
-AC_CHECK_HEADERS([sys/time.h sys/times.h sys/wait.h unistd.h])
+AC_CHECK_HEADERS([sys/select.h stdint.h inttypes.h sched.h malloc.h])
-AC_CHECK_HEADERS([sys/select.h sys/types.h stdint.h inttypes.h sched.h malloc.h])
 AC_CHECK_HEADERS([sys/vfs.h sys/vmount.h sys/statfs.h sys/statvfs.h sys/filio.h])
 AC_CHECK_HEADERS([mntent.h sys/mnttab.h sys/vfstab.h sys/mntctl.h fstab.h])
-AC_CHECK_HEADERS([sys/uio.h])
+AC_CHECK_HEADERS([linux/magic.h sys/prctl.h])
-AC_CHECK_HEADERS([linux/magic.h])
+
-AC_CHECK_HEADERS([sys/prctl.h])
+# Some versions of MSC lack these
+AC_CHECK_HEADERS([dirent.h sys/time.h unistd.h])
 
 # We don't care about this, but we need to keep including it in
 # glibconfig.h for backward compatibility
@@ -925,9 +925,7 @@ AS_IF([test $ac_cv_sizeof_ssize_t = $ac_cv_sizeof_int &&
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
-#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
-# include <sys/types.h>
-#endif
 int main ()
 {
   ssize_t s = 1;
@@ -949,9 +947,7 @@ int main ()
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
-#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
-# include <sys/types.h>
-#endif
 int main ()
 {
    ssize_t s = 1;
@@ -964,10 +960,9 @@ int main ()
 AC_MSG_RESULT($glib_ssize_type)
 
 # Check for some functions
-AC_CHECK_FUNCS(lstat strsignal vsnprintf stpcpy strcasecmp strncasecmp poll getcwd vasprintf setenv unsetenv getc_unlocked readlink symlink fdwalk memmem)
+AC_CHECK_FUNCS(lstat strsignal vsnprintf stpcpy strcasecmp strncasecmp poll vasprintf setenv unsetenv getc_unlocked readlink symlink fdwalk memmem)
-AC_CHECK_FUNCS(chown lchmod lchown fchmod fchown link utimes getgrgid getpwuid getresuid)
+AC_CHECK_FUNCS(lchmod lchown fchmod fchown utimes getresuid)
 AC_CHECK_FUNCS(getmntent_r setmntent endmntent hasmntopt getfsstat getvfsstat fallocate)
-# Check for high-resolution sleep functions
 case $host_os in aix*) ac_cv_func_splice=no ;; esac # AIX splice() is something else
 AC_CHECK_FUNCS(splice)
 AC_CHECK_FUNCS(prlimit)
@@ -1005,9 +1000,6 @@ AC_CHECK_FUNCS(_NSGetEnviron)
 
 AC_CHECK_FUNCS(newlocale uselocale strtod_l strtoll_l strtoull_l)
 
-AC_FUNC_VSNPRINTF_C99
-AC_FUNC_PRINTF_UNIX98
-
 # Internet address families
 if test $glib_native_win32 = yes; then
   glib_inet_includes=["
@@ -1181,6 +1173,8 @@ AC_TRY_COMPILE([#include <fcntl.h>
 #
 # Check whether to use an included printf
 #
+AC_FUNC_VSNPRINTF_C99
+AC_FUNC_PRINTF_UNIX98
 
 AC_ARG_ENABLE(included-printf,
               [AS_HELP_STRING([--enable-included-printf],
@@ -2145,7 +2139,7 @@ glib_save_LIBS="$LIBS"
 # to always be linked with the thread libs on some platforms. 
 # LIBS="$LIBS $G_THREAD_LIBS"
 AC_CHECK_FUNCS(localtime_r gmtime_r)
-AS_IF([ test "$ac_cv_header_pwd_h" = "yes"], [
+AS_IF([ test "$glib_native_win32" != "yes"], [
  	AC_CACHE_CHECK([for posix getpwuid_r],
 		ac_cv_func_posix_getpwuid_r,
 		[AC_TRY_RUN([
@@ -2184,7 +2178,7 @@ int main () {
 		fi
 	fi
 ])
-AS_IF([ test "$ac_cv_header_grp_h" = "yes"], [
+AS_IF([ test "$glib_native_win32" != "yes"], [
    	AC_CACHE_CHECK([for posix getgrgid_r],
 		ac_cv_func_posix_getgrgid_r,
 		[AC_TRY_RUN([

gio/gfile.c

@@ -41,9 +41,6 @@
 
 #include <string.h>
 #include <sys/types.h>
-#ifdef HAVE_PWD_H
-#include <pwd.h>
-#endif
 
 #include "gfile.h"
 #include "glib/gstdio.h"

gio/glocalfile.c

@@ -143,7 +143,7 @@ g_local_file_class_init (GLocalFileClass *klass)
 				  G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
 				  G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
   
-#ifdef HAVE_CHOWN
+#ifdef G_OS_UNIX
   g_file_attribute_info_list_add (list,
 				  G_FILE_ATTRIBUTE_UNIX_UID,
 				  G_FILE_ATTRIBUTE_TYPE_UINT32,

gio/glocalfileinfo.c

@@ -24,6 +24,8 @@
 
 #include "config.h"
 
+#include <glib.h>
+
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
@@ -35,10 +37,8 @@
 #endif
 #include <fcntl.h>
 #include <errno.h>
-#ifdef HAVE_GRP_H
+#ifdef G_OS_UNIX
 #include <grp.h>
-#endif
-#ifdef HAVE_PWD_H
 #include <pwd.h>
 #endif
 #ifdef HAVE_SELINUX
@@ -2158,7 +2158,7 @@ set_unix_mode (char                       *filename,
   return TRUE;
 }
 
-#ifdef HAVE_CHOWN
+#ifdef G_OS_UNIX
 static gboolean
 set_unix_uid_gid (char                       *filename,
 		  const GFileAttributeValue  *uid_value,
@@ -2442,7 +2442,7 @@ _g_local_file_info_set_attribute (char                 *filename,
   if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_MODE) == 0)
     return set_unix_mode (filename, flags, &value, error);
   
-#ifdef HAVE_CHOWN
+#ifdef G_OS_UNIX
   else if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_UID) == 0)
     return set_unix_uid_gid (filename, &value, NULL, flags, error);
   else if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_GID) == 0)
@@ -2519,13 +2519,11 @@ _g_local_file_info_set_attributes  (char                 *filename,
 				    GError              **error)
 {
   GFileAttributeValue *value;
-#ifdef HAVE_CHOWN
+#ifdef G_OS_UNIX
   GFileAttributeValue *uid, *gid;
-#endif
 #ifdef HAVE_UTIMES
   GFileAttributeValue *mtime, *mtime_usec, *atime, *atime_usec;
 #endif
-#if defined (HAVE_CHOWN) || defined (HAVE_UTIMES)
   GFileAttributeStatus status;
 #endif
   gboolean res;
@@ -2555,7 +2553,7 @@ _g_local_file_info_set_attributes  (char                 *filename,
     }
 #endif
 
-#ifdef HAVE_CHOWN
+#ifdef G_OS_UNIX
   /* Group uid and gid setting into one call
    * Change ownership before permissions, since ownership changes can
      change permissions (e.g. setuid)

gio/glocalfileinfo.h

@@ -26,9 +26,7 @@
 #include <gio/gfileinfo.h>
 #include <gio/gfile.h>
 #include <sys/stat.h>
-#ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
-#endif
 
 G_BEGIN_DECLS
 

gio/glocalfileoutputstream.c

@@ -265,7 +265,7 @@ _g_local_file_output_stream_really_close (GLocalFileOutputStream *file,
 	  if (g_cancellable_set_error_if_cancelled (cancellable, error))
 	    goto err_out;
 	  
-#ifdef HAVE_LINK
+#ifdef G_OS_UNIX
 	  /* create original -> backup link, the original is then renamed over */
 	  if (g_unlink (file->priv->backup_filename) != 0 &&
 	      errno != ENOENT)

gio/glocalvfs.c

@@ -28,7 +28,7 @@
 #include "gvfs.h"
 #include <gio/gdummyfile.h>
 #include <sys/types.h>
-#ifdef HAVE_PWD_H
+#ifdef G_OS_UNIX
 #include <pwd.h>
 #endif
 #include <string.h>
@@ -155,7 +155,7 @@ g_local_vfs_parse_name (GVfs       *vfs,
 	    user_prefix = g_strdup (g_get_home_dir ());
 	  else
 	    {
-#ifdef HAVE_PWD_H
+#ifdef G_OS_UNIX
               struct passwd *passwd_file_entry;
               char *user_name;
 

gio/gsocket.c

@@ -48,7 +48,7 @@
 # include <sys/filio.h>
 #endif
 
-#ifdef HAVE_SYS_UIO_H
+#ifdef G_OS_UNIX
 #include <sys/uio.h>
 #endif
 

glib/gbacktrace.c

@@ -40,24 +40,19 @@
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
-#ifdef HAVE_SYS_TIMES_H
-#include <sys/times.h>
-#endif
 #include <sys/types.h>
-#ifdef HAVE_SYS_WAIT_H
-#include <sys/wait.h>
-#endif
 
 #include <time.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#include <sys/wait.h>
 #ifdef HAVE_SYS_SELECT_H
 #include <sys/select.h>
 #endif /* HAVE_SYS_SELECT_H */
+#endif
 
-#include <string.h> /* for bzero on BSD systems */
+#include <string.h>
 
 #ifdef G_OS_WIN32
 #  define STRICT                /* Strict typing, please */

glib/gfileutils.c

@@ -2477,11 +2477,6 @@ g_get_current_dir (void)
   if (max_len == 0)
     max_len = (G_PATH_LENGTH == -1) ? 2048 : G_PATH_LENGTH;
 
-#if !defined(HAVE_GETCWD)
-  buffer = g_new (gchar, max_len + 1);
-  *buffer = 0;
-  dir = getwd (buffer);
-#else
   while (max_len < G_MAXULONG / 2)
     {
       g_free (buffer);
@@ -2494,7 +2489,6 @@ g_get_current_dir (void)
 
       max_len *= 2;
     }
-#endif  /* !sun || !HAVE_GETCWD */
 
   if (!dir || !*buffer)
     {

glib/gthread-posix.c

@@ -54,12 +54,9 @@
 #include <errno.h>
 #include <pthread.h>
 
-#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
-# include <sys/time.h>
+#include <unistd.h>
-#endif
+
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
 #ifdef HAVE_SCHED_H
 #include <sched.h>
 #endif

glib/gutils.c

@@ -29,6 +29,7 @@
  */
 
 #include "config.h"
+#include "glibconfig.h"
 
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -42,7 +43,7 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#ifdef HAVE_PWD_H
+#ifdef G_OS_UNIX
 #include <pwd.h>
 #endif
 #include <sys/types.h>
@@ -603,7 +604,7 @@ g_get_user_database_entry (void)
     {
       static UserDatabaseEntry e;
 
-#ifdef HAVE_PWD_H
+#ifdef G_OS_UNIX
       {
         struct passwd *pw = NULL;
         gpointer buffer = NULL;
@@ -718,7 +719,7 @@ g_get_user_database_entry (void)
         g_free (buffer);
       }
 
-#else /* !HAVE_PWD_H */
+#endif /* G_OS_UNIX */
 
 #ifdef G_OS_WIN32
       {
@@ -733,8 +734,6 @@ g_get_user_database_entry (void)
       }
 #endif /* G_OS_WIN32 */
 
-#endif /* !HAVE_PWD_H */
-
       if (!e.user_name)
         e.user_name = g_strdup ("somebody");
       if (!e.real_name)