Package: nfs-user-server
Version: 2.2beta47-20
Severity: important
According to the Single Unix Specification, rename(dir1, dir2) should
atomically replace dir2 with dir1 if dir2 already exists. With
nfs-kernel-server, this is correctly implemented. But with
nfs-user-server, the below testcase results in:
mkdir("tst-renamedir.C5xxQM", 0700) = 0
mkdir("tst-renamedir.W6OWYp", 0700) = 0
rename("tst-renamedir.C5xxQM", "tst-renamedir.W6OWYp") = -1 EBUSY
The relevant share is exported as:
/home/foo/example (rw,insecure,no_all_squash)
Adding dirsync or async to the options has no effect on the testcase
failure. Here is the testcase:
--- Begin renamedir.c ---
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <utime.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/vfs.h>
static int do_test()
{
char dir1[] = "tst-renamedir.XXXXXX";
char dir2[] = "tst-renamedir.XXXXXX";
int result = 0;
if (mkdtemp(dir1) == NULL) {
printf("mkdtemp call failed: %m\n");
return 1;
}
if (mkdtemp(dir2) == NULL) {
printf("mkdtemp call failed: %m\n");
return 1;
}
if (rename(dir1, dir2)) {
printf("rename(%s, %s) failed: %m\n", dir1, dir2);
return 1;
}
/* Print result summary. */
if (result) {
printf("FAIL: %i test failures\n", result);
} else {
printf("PASS: %i test failures\n", result);
if (rmdir(dir2)) {
printf("unlink call failed: %m\n");
return 1;
}
}
return result;
}
#define TEST_FUNCTION do_test ()
/* Replace main() with `#include "test-skeleton.c"' to fit in glibc. */
int main(int argc, char **argv)
{
int err;
/* Fire off the test. */
err = do_test();
return err;
}
--- End renamedir.c ---
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.8-1-386
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Versions of packages nfs-user-server depends on:
ii libc6 2.3.2.ds1-20 GNU C Library: Shared libraries an
ii libwrap0 7.6.dbs-8 Wietse Venema's TCP wrappers libra
ii portmap 5-9 The RPC portmapper
-- no debconf information
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