On Wed, 2010-03-31 at 17:06 -0700, jvrao wrote:
> lsetxattr()/lgetxsttr() functions are not working on a ext4 symlink.
> But works fine on a regular file.
>
> I tried the following program.. Not sure if I am missing something.
> Any help will be appreciated.
>
>
I tried your test program on ext2/3/btrfs, it seems all broken.
Not sure how this not being visible? Thought xattrs are heavily used by
default on some distros.
Mingming
> --------- simple program -------------
> [jvrao]# cat sxl.c
> #include <stdio.h>
> #include <sys/types.h>
> #include <attr/xattr.h>
>
> main()
> {
> int ha=5;
> int ha_out=-1;
> int err;
> err = lsetxattr("./foo", "user.junk", &ha, sizeof(int),0);
> if (err == -1)
> perror("lsetxattr failed");
> lgetxattr("./foo", "user.junk", &ha_out, sizeof(int));
> if (err == -1)
> perror("lsetxattr failed");
> printf("file:./foo ha:%d ha_out:%d\n", ha, ha_out);
>
> ha_out = -1;
> err = lsetxattr("./foo.sl", "user.junk", &ha, sizeof(int),0);
> if (err == -1)
> perror("lsetxattr failed");
> lgetxattr("./foo.sl", "user.junk", &ha_out, sizeof(int));
> if (err == -1)
> perror("lsetxattr failed");
> printf("file:./foo.sl ha:%d ha_out:%d\n", ha, ha_out);
> }
> ------------------------
>
> [jvrao]# ls -l foo*
> -rw-r--r--. 1 root root 0 2010-03-31 16:49 foo
> lrwxrwxrwx. 1 root root 3 2010-03-31 16:49 foo.sl -> foo
>
> [jvrao]# ./sxl
> file:./foo ha:5 ha_out:5
> lsetxattr failed: Operation not permitted
> lsetxattr failed: Operation not permitted
> file:./foo.sl ha:5 ha_out:-1
>
>
>
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