08-06-2013
Thank you for reporting back.
I read this thread a couple days ago and took a look at the busybox code. Before I could post, something more pressing came up and I forgot about it.
Only three paths in the Busybox rm implementation lead to a "cannot remove" message, and the gateway to each is a system call which should not return ENOSPC: lstat, rmdir, and unlink.
Now that you've gone and fixed the issue, we'll never know where the system's error handling went off the rails. Damn you.
By the way, Busybox isn't a Linux distro. It's just a single binary executable. If in the future you have another issue, please be more specific. At the very least, identify the distro, kernel, and busybox versions.
It's also useful to know when we're dealing with "ancient" software. While I was looking at busybox's code, I realized that you must be using quite an old version.
Your "cannot remove" error message was changed to "can't remove" over 3.5 years ago (Nov 2009), and the last release to not include that change (1.15.3) goes back to Dec 2009.
Regards,
Alister
Last edited by alister; 08-06-2013 at 04:53 PM..
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LEARN ABOUT DEBIAN
remove
REMOVE(3) Linux Programmer's Manual REMOVE(3)
NAME
remove - remove a file or directory
SYNOPSIS
#include <stdio.h>
int remove(const char *pathname);
DESCRIPTION
remove() deletes a name from the file system. It calls unlink(2) for files, and rmdir(2) for directories.
If the removed name was the last link to a file and no processes have the file open, the file is deleted and the space it was using is made
available for reuse.
If the name was the last link to a file, but any processes still have the file open, the file will remain in existence until the last file
descriptor referring to it is closed.
If the name referred to a symbolic link, the link is removed.
If the name referred to a socket, FIFO, or device, the name is removed, but processes which have the object open may continue to use it.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
The errors that occur are those for unlink(2) and rmdir(2).
CONFORMING TO
C89, C99, 4.3BSD, POSIX.1-2001.
NOTES
Under libc4 and libc5, remove() was an alias for unlink(2) (and hence would not remove directories).
BUGS
Infelicities in the protocol underlying NFS can cause the unexpected disappearance of files which are still being used.
SEE ALSO
rm(1), unlink(1), link(2), mknod(2), open(2), rename(2), rmdir(2), unlink(2), mkfifo(3), symlink(7)
COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU
2008-12-03 REMOVE(3)