fsync() doesn't work with Secure NFS?

Peter Eriksson,F F203,278 · *nix forums addict Joined: 23 Feb 2005 Posts: 65

Peter Eriksson <peter@ifm.liu.se> writes:

Peter Eriksson,F F203,278 · *nix forums addict Joined: 23 Feb 2005 Posts: 65

The following small program fails when run inside a Secure NFS-mounted
directory (using Kerberos for authentication) in an interresting way:

#include <errno.h>
int main(int argc, char **argv)
{
int rc = 0, fd, res, cc;

fd = creat("dummy.txt", 0666);
res = write(fd, "test", 4);

if (argc > 1 && strcmp(argv[1], "fsync") == 0)
rc = fsync(fd);
else if (argc > 1 && strcmp(argv[1], "fdatasync") == 0)
rc = fdatasync(fd);

cc = close(fd);

printf("fd = %d, res = %d, rc = %d, errno = %d, cc = %d\n",
fd, res, rc, errno, cc);
}

Sample run:

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