[lkml]   [1999]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subjecttruncate("x", -1)

Looks Linux specific from some testing. And doesn't even happen with Linux
NFS to a Linux server.

Digital Unix ADVFS - no problem
Solaris UFS - no problem
Linux 2.0 NFS client against Solaris NFS server (UFS) - no problem
Linux 2.0 NFS client against Linux NFS 2.0 server (EXT2FS) - no problem
Linux 2.0 EXT2FS - PROBLEM
StarOS 4.1.1 TMPFS - no problem
StarOS 4.1.1 UFS - no problem
FreeBSD 3.0 - no problem
NeXTStep 3.3 - no problem

Fortunately, even in the Linux case, it doesn't seem to mess up quotas.

The argument to [f]truncate is meant to be a size_t not a ssize_t, so
probably this is a signed/unsigned bug. The man page says that it should
truncate a file to at most the specified size, so the correct behaviour
should be

truncate("x", -1)
kernel: current size 0 < new size 2^32 - 1
kernel: return success with no action


(NB: StarOS 4.1.1 in the above list is basically SunOS 4.1.1 for one type of
sun4x [the Star 910/VP])

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:51    [W:0.445 / U:4.948 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site