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-rw-r--r--hurd/xattr.c201
1 files changed, 0 insertions, 201 deletions
diff --git a/hurd/xattr.c b/hurd/xattr.c
deleted file mode 100644
index cf3e22d..0000000
--- a/hurd/xattr.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/* Support for *xattr interfaces on GNU/Hurd.
- Copyright (C) 2006 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <hurd.h>
-#include <hurd/xattr.h>
-#include <string.h>
-#include <sys/mman.h>
-
-/* Right now we support only a fixed set of xattr names for Hurd features.
- There are no RPC interfaces for free-form xattr names and values.
-
- Name Value encoding
- ---- ----- --------
- gnu.author empty if st_author==st_uid
- uid_t giving st_author value
- gnu.translator empty if no passive translator
- translator and arguments: "/hurd/foo\0arg1\0arg2\0"
-*/
-
-error_t
-_hurd_xattr_get (io_t port, const char *name, void *value, size_t *size)
-{
- if (strncmp (name, "gnu.", 4))
- return EOPNOTSUPP;
- name += 4;
-
- if (!strcmp (name, "author"))
- {
- struct stat64 st;
- error_t err = __io_stat (port, &st);
- if (err)
- return err;
- if (st.st_author == st.st_uid)
- *size = 0;
- else if (value)
- {
- if (*size < sizeof st.st_author)
- return ERANGE;
- memcpy (value, &st.st_author, sizeof st.st_author);
- }
- *size = sizeof st.st_author;
- return 0;
- }
-
- if (!strcmp (name, "translator"))
- {
- char *buf = value;
- size_t bufsz = value ? *size : 0;
- error_t err = __file_get_translator (port, &buf, &bufsz);
- if (err)
- return err;
- if (value != NULL && *size < bufsz)
- {
- if (buf != value)
- munmap (buf, bufsz);
- return -ERANGE;
- }
- if (buf != value && bufsz > 0)
- {
- if (value != NULL)
- memcpy (value, buf, bufsz);
- munmap (buf, bufsz);
- }
- *size = bufsz;
- return 0;
- }
-
- return EOPNOTSUPP;
-}
-
-error_t
-_hurd_xattr_set (io_t port, const char *name, const void *value, size_t size,
- int flags)
-{
- if (strncmp (name, "gnu.", 4))
- return EOPNOTSUPP;
- name += 4;
-
- if (!strcmp (name, "author"))
- switch (size)
- {
- default:
- return EINVAL;
- case 0: /* "Clear" author by setting to st_uid. */
- {
- struct stat64 st;
- error_t err = __io_stat (port, &st);
- if (err)
- return err;
- if (st.st_author == st.st_uid)
- {
- /* Nothing to do. */
- if (flags & XATTR_REPLACE)
- return ENODATA;
- return 0;
- }
- if (flags & XATTR_CREATE)
- return EEXIST;
- return __file_chauthor (port, st.st_uid);
- }
- case sizeof (uid_t): /* Set the author. */
- {
- uid_t id;
- memcpy (&id, value, sizeof id);
- if (flags & (XATTR_CREATE|XATTR_REPLACE))
- {
- struct stat64 st;
- error_t err = __io_stat (port, &st);
- if (err)
- return err;
- if (st.st_author == st.st_uid)
- {
- if (flags & XATTR_REPLACE)
- return ENODATA;
- }
- else if (flags & XATTR_CREATE)
- return EEXIST;
- if (st.st_author == id)
- /* Nothing to do. */
- return 0;
- }
- return __file_chauthor (port, id);
- }
- }
-
- if (!strcmp (name, "translator"))
- {
- if (flags & XATTR_REPLACE)
- {
- /* Must make sure it's already there. */
- char *buf = NULL;
- size_t bufsz = 0;
- error_t err = __file_get_translator (port, &buf, &bufsz);
- if (err)
- return err;
- if (bufsz > 0)
- {
- munmap (buf, bufsz);
- return ENODATA;
- }
- }
- return __file_set_translator (port,
- FS_TRANS_SET | ((flags & XATTR_CREATE)
- ? FS_TRANS_EXCL : 0), 0, 0,
- value, size,
- MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
- }
-
- return EOPNOTSUPP;
-}
-
-error_t
-_hurd_xattr_remove (io_t port, const char *name)
-{
- return _hurd_xattr_set (port, name, NULL, 0, XATTR_REPLACE);
-}
-
-error_t
-_hurd_xattr_list (io_t port, void *buffer, size_t *size)
-{
- size_t total = 0;
- char *bufp = buffer;
- inline void add (const char *name, size_t len)
- {
- total += len;
- if (bufp != NULL && total <= *size)
- bufp = __mempcpy (bufp, name, len);
- }
-#define add(s) add (s, sizeof s)
-
- struct stat64 st;
- error_t err = __io_stat (port, &st);
- if (err)
- return err;
-
- if (st.st_author != st.st_uid)
- add ("gnu.author");
- if (st.st_mode & S_IPTRANS)
- add ("gnu.translator");
-
- if (buffer != NULL && total > *size)
- return ERANGE;
- *size = total;
- return 0;
-}