Fix f?chflags prototypes, declare them and their flags.

Although they are defined on GNU/Hurd, f?chflags were never declared. It
seems the BSD prototype actually uses an unsigned long, so we can take
the opportunity to fix the prototype, while adding an actual
declaration.

* misc/chflags.c (chflags): Set flags parameter type to unsigned long instead of
int.
* misc/fchflags.c (fchflags): Likewise.
* sysdeps/mach/hurd/chflags.c (chflags): Likewise.
* sysdeps/mach/hurd/fchflags.c (fchflags): Likewise.
* sysdeps/mach/hurd/bits/stat.h (UF_SETTABLE, UF_NODUMP, UF_IMMUTABLE,
UF_APPEND, UF_OPAQUE, UF_NOUNLINK, SF_SETTABLE, SF_ARCHIVED, SF_IMMUTABLE,
SF_APPEND, SF_NOUNLINK, SF_SNAPSHOT): Declare macros.
(chflags, fchflags): Declare functions.

2 files changed, 4 insertions, 4 deletions

diff --git a/misc/chflags.c b/misc/chflags.c
index 3785c6b7b0..cf3b77fdf0 100644
--- a/misc/chflags.c
+++ b/misc/chflags.c
@@ -21,12 +21,12 @@
 
 /* Change the flags of FILE to FLAGS.  */
 
-int chflags (const char *file, int flags) __THROW;
+int chflags (const char *file, unsigned long int flags) __THROW;
 
 int
 chflags (file, flags)
      const char *file;
-     int flags;
+     unsigned long int flags;
 {
   if (file == NULL)
     {
diff --git a/misc/fchflags.c b/misc/fchflags.c
index 53805eaf0e..1e61921aac 100644
--- a/misc/fchflags.c
+++ b/misc/fchflags.c
@@ -21,12 +21,12 @@
 
 /* Change the flags of the file referenced by FD to FLAGS.  */
 
-int fchflags (int fd, int flags) __THROW;
+int fchflags (int fd, unsigned long int flags) __THROW;
 
 int
 fchflags (fd, flags)
      int fd;
-     int flags;
+     unsigned long int flags;
 {
   if (fd < 0)
     {