From a579a9f85bd4a0da5dd67e3ef40a836b7d19d0fc Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 23 Oct 1999 11:46:03 +0000
Subject: (full_write): Remove unused decl. (open_maybe_create): Remove.
 (touch): Don't record whether the file was created; this isn't possible to do
 reliably and portably without race conditions. If the file was created and if
 amtime_now is nonzero, this change means we'll have to do another utime
 system call, but that's no more harmful than the previous version of this
 code.

---
 src/touch.c | 62 +++----------------------------------------------------------
 1 file changed, 3 insertions(+), 59 deletions(-)

(limited to 'src/touch.c')

diff --git a/src/touch.c b/src/touch.c
index de9be5e7f..87986bc22 100644
--- a/src/touch.c
+++ b/src/touch.c
@@ -40,8 +40,6 @@
 time_t time ();
 #endif
 
-int full_write ();
-
 /* Bitmasks for `change_times'. */
 #define CH_ATIME 1
 #define CH_MTIME 2
@@ -102,45 +100,6 @@ static int const time_masks[] =
   CH_ATIME, CH_ATIME, CH_ATIME, CH_MTIME, CH_MTIME
 };
 
-/* Open FILE, possibly creating it.  Set *FILE_CREATED to nonzero if the
-   open creates it, or to zero if the open call opened an existing file.
-   Return the result of the open call.  Be careful to avoid race conditions.  */
-
-static int
-open_maybe_create (const char *file, int *file_created)
-{
-  int fd;
-
-  *file_created = 0;
-  while (1)
-    {
-      /* First, see if we can create a new FILE.  */
-      fd = open (file, O_WRONLY | O_CREAT | O_EXCL,
-		 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
-      if (fd != -1)
-	*file_created = 1;
-
-      /* If the open succeeded or if it failed for any reason other
-	 than the existence of FILE, then we're done.  Some systems
-         (solaris) set errno to EINVAL when FILE is a directory.  */
-      if (fd != -1 || (errno != EEXIST && errno != EINVAL))
-	break;
-
-      /* The first open failed because FILE already exists.
-	 Now try to open it for writing.  */
-      fd = open (file, O_WRONLY);
-
-      /* If the open succeeded or if it failed for any reason other
-	 than the absence of FILE, then we're done.  */
-      /* The 2nd open can fail if FILE was unlinked between the two
-	 open calls.  When that happens, just iterate.  */
-      if (fd != -1 || errno != ENOENT)
-	break;
-    }
-
-  return fd;
-}
-
 /* Update the time of file FILE according to the options given.
    Return 0 if successful, 1 if an error occurs. */
 
@@ -150,7 +109,6 @@ touch (const char *file)
   int status;
   struct stat sbuf;
   int fd;
-  int file_created;
 
   if (no_create)
     {
@@ -161,12 +119,12 @@ touch (const char *file)
 	  /* FILE doesn't exist.  So we're done.  */
 	  return 0;
 	}
-      file_created = 0;
     }
   else
     {
       /* Try to open FILE, creating it if necessary.  */
-      fd = open_maybe_create (file, &file_created);
+      fd = open (file, O_WRONLY | O_CREAT,
+		 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
     }
 
   /* Don't fail if the open failed because FILE is a directory.  */
@@ -179,21 +137,7 @@ touch (const char *file)
       return 1;
     }
 
-  if (amtime_now)
-    {
-      if (file_created)
-	{
-	  if (close (fd) < 0)
-	    {
-	      error (0, errno, "%s", file);
-	      return 1;
-	    }
-
-	  /* We've just created the file with the current times.  */
-	  return 0;
-	}
-    }
-  else
+  if (! amtime_now)
     {
       /* We're setting only one of the time values.  stat the target to get
 	 the other one.  If we have the file descriptor already, use fstat,
-- 
cgit v1.2.3-54-g00ecf