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Diffstat (limited to 'doc/legacy/solaris-related-xattrs.txt')
-rw-r--r-- | doc/legacy/solaris-related-xattrs.txt | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/doc/legacy/solaris-related-xattrs.txt b/doc/legacy/solaris-related-xattrs.txt deleted file mode 100644 index fa41e29000b..00000000000 --- a/doc/legacy/solaris-related-xattrs.txt +++ /dev/null @@ -1,44 +0,0 @@ - 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 across 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()" - - - |