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authorVijay Bellur <vijay@gluster.com>2012-04-09 23:11:52 +0530
committerAnand Avati <avati@redhat.com>2012-04-11 10:25:56 -0700
commit076830c068fb39bbc3e863c89a4253cbea36357e (patch)
tree842884d8db9a40d5a53e5171c852a84daa8e0f65 /doc/solaris-related-xattrs.txt
parentdf8e2f53b70f4f49af70df308010dddfe5ca35ec (diff)
doc: Move outdated documentation to legacy
Change-Id: I0ceba9a993e8b1cdef4ff6a784bfd69c08107d88 BUG: 811311 Signed-off-by: Vijay Bellur <vijay@gluster.com> Reviewed-on: http://review.gluster.com/3116 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
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- Solaris Extended Attributes
-
-In solaris extended attributes are logically supported as files
-within the filesystem. The file system is therefore augmented
-with an orthogonal namespace of file attributes. Attribute values
-are accessed by file descriptors obtained through a special attribute
-interface. This type of logical view of "attributes as files" allows
-the leveraging of existing file system interface functionality to
-support the construction, deletion and manipulation of attributes.
-
-But as we have tested through this functionality provided by Solaris
-we have come accross two major issues as written below.
-
-1. Symlink XATTR_NOFOLLOW not present for creating extended attributes
- directly on the symlinks like other platforms Linux,MAC-OSX,BSD etc.
- An implementation is present for O_NOFOLLOW for "openat()" call sets
- up errno ELOOP whenever encountered with a symlink and also another
- implementation AT_SYMLINK_NOFOLLOW which is not present for calls like
- "attropen(), openat()"
-
- a snippet of test code which helped us understand this behaviour
- --------------------------------------
- attrfd = attropen (path, key,
- flags|AT_SYMLINK_NOFOLLOW|O_CREAT|O_WRONLY|O_NOFOLLOW, 0777);
- if (attrfd >= 0) {
- ftruncate (attrfd, 0);
- ret = write (attrfd, value, size);
- close (attrfd);
- } else {
- fprintf (stderr, "Couldn't set extended attribute for %s (%d)\n",
- path, errno);
- }
- --------------------------------------
-
-2. Extended attribute support for special files like device files, fifo files
- is not supported under solaris.
-
-Apart from these glitches almost everything regarding porting functionality
-for extended attribute calls has been properly implemented in compat.c
-with writing wrapper around functions over
-"attropen()", "openat()", "unlinkat()"
-
-
-