maint: adjust cpp indentation to reflect nesting depth

I.e., in a block of code that begins with an unnested "#if",
put one space between the "#" in column 1 and following token.
For example,
-#include <sys/vfs.h>
+# include <sys/vfs.h>
Do this only in .c files that are part of a module I maintain.
* lib/linkat.c: Filter through cppi.
* lib/nanosleep.c: Likewise.
* lib/openat.c: Likewise.
* lib/openat-die.c: Likewise.
* lib/dup3.c: Likewise.
* lib/fchownat.c: Likewise.
* lib/flock.c: Likewise.
* lib/fsync.c: Likewise.
* lib/fts.c: Likewise.
* lib/getpass.c: Likewise.
* lib/gettimeofday.c: Likewise.
* lib/userspec.c: Likewise.
* Makefile (sc_cpp_indent_check): New rule, to check this.

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/openat.c b/lib/openat.c
index 55e12e2111..939e3c70d7 100644
--- a/lib/openat.c
+++ b/lib/openat.c
@@ -53,7 +53,7 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
       va_end (arg);
     }
 
-#if OPEN_TRAILING_SLASH_BUG
+# if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and one of O_CREAT, O_WRONLY, O_RDWR
      is specified, then fail.
      Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
@@ -84,11 +84,11 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
           return -1;
         }
     }
-#endif
+# endif
 
   fd = openat (dfd, filename, flags, mode);
 
-#if OPEN_TRAILING_SLASH_BUG
+# if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and fd does not refer to a directory,
      then fail.
      Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
@@ -117,7 +117,7 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
             }
         }
     }
-#endif
+# endif
 
   return fd;
 }