Remove PIPE_BUF Linux-specific code

Fixes BZ #12723

The variable pipe buffer size does nothing to the value of PIPE_BUF,
since the number of bytes that are atomically written is still
PIPE_BUF on Linux.

2 files changed, 0 insertions, 24 deletions

diff --git a/sysdeps/unix/sysv/linux/fpathconf.c b/sysdeps/unix/sysv/linux/fpathconf.c
index c971644..e8c4dc9 100644
--- a/sysdeps/unix/sysv/linux/fpathconf.c
+++ b/sysdeps/unix/sysv/linux/fpathconf.c
@@ -33,7 +33,6 @@ __fpathconf (fd, name)
      int name;
 {
   struct statfs fsbuf;
-  int r;
 
   switch (name)
     {
@@ -49,12 +48,6 @@ __fpathconf (fd, name)
     case _PC_CHOWN_RESTRICTED:
       return __statfs_chown_restricted (__fstatfs (fd, &fsbuf), &fsbuf);
 
-    case _PC_PIPE_BUF:
-      r = __fcntl (fd, F_GETPIPE_SZ);
-      if (r > 0)
-	return r;
-      /* FALLTHROUGH */
-
     default:
       return posix_fpathconf (fd, name);
     }
diff --git a/sysdeps/unix/sysv/linux/pathconf.c b/sysdeps/unix/sysv/linux/pathconf.c
index edc691e..de91a45 100644
--- a/sysdeps/unix/sysv/linux/pathconf.c
+++ b/sysdeps/unix/sysv/linux/pathconf.c
@@ -39,8 +39,6 @@ long int
 __pathconf (const char *file, int name)
 {
   struct statfs fsbuf;
-  int fd;
-  int flags;
 
   switch (name)
     {
@@ -56,21 +54,6 @@ __pathconf (const char *file, int name)
     case _PC_CHOWN_RESTRICTED:
       return __statfs_chown_restricted (__statfs (file, &fsbuf), &fsbuf);
 
-    case _PC_PIPE_BUF:
-      flags = O_RDONLY|O_NONBLOCK|O_NOCTTY;
-#ifdef O_CLOEXEC
-      flags |= O_CLOEXEC;
-#endif
-      fd = open_not_cancel_2 (file, flags);
-      if (fd >= 0)
-	{
-	  long int r = __fcntl (fd, F_GETPIPE_SZ);
-	  close_not_cancel_no_status (fd);
-	  if (r > 0)
-	    return r;
-	}
-      /* FALLTHROUGH */
-
     default:
       return posix_pathconf (file, name);
     }