maint: update copyright

[gnulib.git] / lib / link.c

diff --git a/lib/link.c b/lib/link.c
index 994ae45..cb99666 100644 (file)
--- a/lib/link.c
+++ b/lib/link.c
@@ -1,6 +1,6 @@
 /* Emulate link on platforms that lack it, namely native Windows platforms.
 
-   Copyright (C) 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009-2014 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
@@ -13,8 +13,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
@@ -33,8 +32,8 @@
 
 /* CreateHardLink was introduced only in Windows 2000.  */
 typedef BOOL (WINAPI * CreateHardLinkFuncType) (LPCTSTR lpFileName,
-                                               LPCTSTR lpExistingFileName,
-                                               LPSECURITY_ATTRIBUTES lpSecurityAttributes);
+                                                LPCTSTR lpExistingFileName,
+                                                LPSECURITY_ATTRIBUTES lpSecurityAttributes);
 static CreateHardLinkFuncType CreateHardLinkFunc = NULL;
 static BOOL initialized = FALSE;
 
@@ -45,7 +44,7 @@ initialize (void)
   if (kernel32 != NULL)
     {
       CreateHardLinkFunc =
-       (CreateHardLinkFuncType) GetProcAddress (kernel32, "CreateHardLinkA");
+        (CreateHardLinkFuncType) GetProcAddress (kernel32, "CreateHardLinkA");
     }
   initialized = TRUE;
 }
@@ -103,39 +102,39 @@ link (const char *file1, const char *file2)
        * system. */
       DWORD err = GetLastError ();
       switch (err)
-       {
-       case ERROR_ACCESS_DENIED:
-         errno = EACCES;
-         break;
-
-       case ERROR_INVALID_FUNCTION:    /* fs does not support hard links */
-         errno = EPERM;
-         break;
-
-       case ERROR_NOT_SAME_DEVICE:
-         errno = EXDEV;
-         break;
-
-       case ERROR_PATH_NOT_FOUND:
-       case ERROR_FILE_NOT_FOUND:
-         errno = ENOENT;
-         break;
-
-       case ERROR_INVALID_PARAMETER:
-         errno = ENAMETOOLONG;
-         break;
-
-       case ERROR_TOO_MANY_LINKS:
-         errno = EMLINK;
-         break;
-
-       case ERROR_ALREADY_EXISTS:
-         errno = EEXIST;
-         break;
-
-       default:
-         errno = EIO;
-       }
+        {
+        case ERROR_ACCESS_DENIED:
+          errno = EACCES;
+          break;
+
+        case ERROR_INVALID_FUNCTION:    /* fs does not support hard links */
+          errno = EPERM;
+          break;
+
+        case ERROR_NOT_SAME_DEVICE:
+          errno = EXDEV;
+          break;
+
+        case ERROR_PATH_NOT_FOUND:
+        case ERROR_FILE_NOT_FOUND:
+          errno = ENOENT;
+          break;
+
+        case ERROR_INVALID_PARAMETER:
+          errno = ENAMETOOLONG;
+          break;
+
+        case ERROR_TOO_MANY_LINKS:
+          errno = EMLINK;
+          break;
+
+        case ERROR_ALREADY_EXISTS:
+          errno = EEXIST;
+          break;
+
+        default:
+          errno = EIO;
+        }
       return -1;
     }
 
@@ -155,9 +154,20 @@ link (const char *file1, const char *file2)
 int
 rpl_link (char const *file1, char const *file2)
 {
+  size_t len1;
+  size_t len2;
+  struct stat st;
+
+  /* Don't allow IRIX to dereference dangling file2 symlink.  */
+  if (!lstat (file2, &st))
+    {
+      errno = EEXIST;
+      return -1;
+    }
+
   /* Reject trailing slashes on non-directories.  */
-  size_t len1 = strlen (file1);
-  size_t len2 = strlen (file2);
+  len1 = strlen (file1);
+  len2 = strlen (file2);
   if ((len1 && file1[len1 - 1] == '/')
       || (len2 && file2[len2 - 1] == '/'))
     {
@@ -165,7 +175,6 @@ rpl_link (char const *file1, char const *file2)
          If stat() fails, then link() should fail for the same reason
          (although on Solaris 9, link("file/","oops") mistakenly
          succeeds); if stat() succeeds, require a directory.  */
-      struct stat st;
       if (stat (file1, &st))
         return -1;
       if (!S_ISDIR (st.st_mode))
@@ -178,7 +187,6 @@ rpl_link (char const *file1, char const *file2)
     {
       /* Fix Cygwin 1.5.x bug where link("a","b/.") creates file "b".  */
       char *dir = strdup (file2);
-      struct stat st;
       char *p;
       if (!dir)
         return -1;