maint.mk: avoid sc_prohibit_always-defined_macros failure in coreutils

[gnulib.git] / lib / openat.c

diff --git a/lib/openat.c b/lib/openat.c
index aae7782..18491a6 100644 (file)
--- a/lib/openat.c
+++ b/lib/openat.c
@@ -1,5 +1,5 @@
 /* provide a replacement openat function
-   Copyright (C) 2004-2009 Free Software Foundation, Inc.
+   Copyright (C) 2004-2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -25,7 +25,7 @@
 #include <string.h>
 #include <sys/stat.h>
 
-#include "dirname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+#include "dosname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
 #include "openat-priv.h"
 #include "save-cwd.h"
 
@@ -47,13 +47,13 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
       va_start (arg, flags);
 
       /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
-        creates crashing code when 'mode_t' is smaller than 'int'.  */
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
       mode = va_arg (arg, PROMOTED_MODE_T);
 
       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>
@@ -79,16 +79,16 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
     {
       size_t len = strlen (filename);
       if (len > 0 && filename[len - 1] == '/')
-       {
-         errno = EISDIR;
-         return -1;
-       }
+        {
+          errno = EISDIR;
+          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>
@@ -106,18 +106,18 @@ rpl_openat (int dfd, char const *filename, int flags, ...)
       /* We know len is positive, since open did not fail with ENOENT.  */
       size_t len = strlen (filename);
       if (filename[len - 1] == '/')
-       {
-         struct stat statbuf;
-
-         if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
-           {
-             close (fd);
-             errno = ENOTDIR;
-             return -1;
-           }
-       }
+        {
+          struct stat statbuf;
+
+          if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+            {
+              close (fd);
+              errno = ENOTDIR;
+              return -1;
+            }
+        }
     }
-#endif
+# endif
 
   return fd;
 }
@@ -143,7 +143,7 @@ openat (int fd, char const *file, int flags, ...)
       va_start (arg, flags);
 
       /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
-        creates crashing code when 'mode_t' is smaller than 'int'.  */
+         creates crashing code when 'mode_t' is smaller than 'int'.  */
       mode = va_arg (arg, PROMOTED_MODE_T);
 
       va_end (arg);
@@ -165,7 +165,7 @@ openat (int fd, char const *file, int flags, ...)
 
 int
 openat_permissive (int fd, char const *file, int flags, mode_t mode,
-                  int *cwd_errno)
+                   int *cwd_errno)
 {
   struct saved_cwd saved_cwd;
   int saved_errno;
@@ -180,18 +180,18 @@ openat_permissive (int fd, char const *file, int flags, mode_t mode,
     char *proc_file = openat_proc_name (buf, fd, file);
     if (proc_file)
       {
-       int open_result = open (proc_file, flags, mode);
-       int open_errno = errno;
-       if (proc_file != buf)
-         free (proc_file);
-       /* If the syscall succeeds, or if it fails with an unexpected
-          errno value, then return right away.  Otherwise, fall through
-          and resort to using save_cwd/restore_cwd.  */
-       if (0 <= open_result || ! EXPECTED_ERRNO (open_errno))
-         {
-           errno = open_errno;
-           return open_result;
-         }
+        int open_result = open (proc_file, flags, mode);
+        int open_errno = errno;
+        if (proc_file != buf)
+          free (proc_file);
+        /* If the syscall succeeds, or if it fails with an unexpected
+           errno value, then return right away.  Otherwise, fall through
+           and resort to using save_cwd/restore_cwd.  */
+        if (0 <= open_result || ! EXPECTED_ERRNO (open_errno))
+          {
+            errno = open_errno;
+            return open_result;
+          }
       }
   }
 
@@ -199,7 +199,7 @@ openat_permissive (int fd, char const *file, int flags, mode_t mode,
   if (! save_ok)
     {
       if (! cwd_errno)
-       openat_save_fail (errno);
+        openat_save_fail (errno);
       *cwd_errno = errno;
     }
   if (0 <= fd && fd == saved_cwd.desc)
@@ -220,17 +220,17 @@ openat_permissive (int fd, char const *file, int flags, mode_t mode,
       err = open (file, flags, mode);
       saved_errno = errno;
       if (save_ok && restore_cwd (&saved_cwd) != 0)
-       {
-         if (! cwd_errno)
-           {
-             /* Don't write a message to just-created fd 2.  */
-             saved_errno = errno;
-             if (err == STDERR_FILENO)
-               close (err);
-             openat_restore_fail (saved_errno);
-           }
-         *cwd_errno = errno;
-       }
+        {
+          if (! cwd_errno)
+            {
+              /* Don't write a message to just-created fd 2.  */
+              saved_errno = errno;
+              if (err == STDERR_FILENO)
+                close (err);
+              openat_restore_fail (saved_errno);
+            }
+          *cwd_errno = errno;
+        }
     }
 
   free_cwd (&saved_cwd);
@@ -244,18 +244,18 @@ bool
 openat_needs_fchdir (void)
 {
   bool needs_fchdir = true;
-  int fd = open ("/", O_RDONLY);
+  int fd = open ("/", O_SEARCH);
 
   if (0 <= fd)
     {
       char buf[OPENAT_BUFFER_SIZE];
       char *proc_file = openat_proc_name (buf, fd, ".");
       if (proc_file)
-       {
-         needs_fchdir = false;
-         if (proc_file != buf)
-           free (proc_file);
-       }
+        {
+          needs_fchdir = false;
+          if (proc_file != buf)
+            free (proc_file);
+        }
       close (fd);
     }