Date: Sun, 11 Jan 2009 19:48:42 -0800 From: Tim Kientzle <kientzle@freebsd.org> To: Tim Kientzle <kientzle@freebsd.org> Cc: freebsd-hackers@freebsd.org, pluknet <pluknet@gmail.com> Subject: Re: extattr problems? Message-ID: <496ABD9A.8080006@freebsd.org> In-Reply-To: <496AA714.1090904@freebsd.org> References: <49692659.2030306@freebsd.org> <a31046fc0901101836q1f43028awe4f7b0ba746248ac@mail.gmail.com> <49696C24.8010601@freebsd.org> <a31046fc0901110004m629f9aeegc4ac1cdfd1591c69@mail.gmail.com> <496AA714.1090904@freebsd.org>
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I think this one is a bug. It appears that extattr_set_fd()
obeys the permissions on the file, not the permissions
of the descriptor. In particular, I see this on
FreeBSD 6.3:
[tim@dark /tmp]$ ./extattr_test
fd=3
extattr_set_fd() = -1
errno = 13 (Permission denied)
[tim@dark /tmp]$ cat extattr_test.c
#include <sys/types.h>
#include <sys/extattr.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
int
main(int argc, char **argv)
{
int n, fd;
fd = open("/tmp/test12345", O_RDWR | O_CREAT | O_EXCL, 0000);
printf("fd=%d\n", fd);
n = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER,
"testattr", "1234", 4);
printf("extattr_set_fd() = %d\n", n);
if (n != 0)
printf("errno = %d (%s)\n",
errno, strerror(errno));
exit(0);
}
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