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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/reiserfs/xattr_user.c
downloadlinux-2.6.34-ux500-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/reiserfs/xattr_user.c')
-rw-r--r--fs/reiserfs/xattr_user.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c
new file mode 100644
index 00000000000..0772806466a
--- /dev/null
+++ b/fs/reiserfs/xattr_user.c
@@ -0,0 +1,99 @@
+#include <linux/reiserfs_fs.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/pagemap.h>
+#include <linux/xattr.h>
+#include <linux/reiserfs_xattr.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_REISERFS_FS_POSIX_ACL
+# include <linux/reiserfs_acl.h>
+#endif
+
+#define XATTR_USER_PREFIX "user."
+
+static int
+user_get (struct inode *inode, const char *name, void *buffer, size_t size)
+{
+
+ int error;
+
+ if (strlen(name) < sizeof(XATTR_USER_PREFIX))
+ return -EINVAL;
+
+ if (!reiserfs_xattrs_user (inode->i_sb))
+ return -EOPNOTSUPP;
+
+ error = reiserfs_permission_locked (inode, MAY_READ, NULL);
+ if (error)
+ return error;
+
+ return reiserfs_xattr_get (inode, name, buffer, size);
+}
+
+static int
+user_set (struct inode *inode, const char *name, const void *buffer,
+ size_t size, int flags)
+{
+
+ int error;
+
+ if (strlen(name) < sizeof(XATTR_USER_PREFIX))
+ return -EINVAL;
+
+ if (!reiserfs_xattrs_user (inode->i_sb))
+ return -EOPNOTSUPP;
+
+ if (!S_ISREG (inode->i_mode) &&
+ (!S_ISDIR (inode->i_mode) || inode->i_mode & S_ISVTX))
+ return -EPERM;
+
+ error = reiserfs_permission_locked (inode, MAY_WRITE, NULL);
+ if (error)
+ return error;
+
+ return reiserfs_xattr_set (inode, name, buffer, size, flags);
+}
+
+static int
+user_del (struct inode *inode, const char *name)
+{
+ int error;
+
+ if (strlen(name) < sizeof(XATTR_USER_PREFIX))
+ return -EINVAL;
+
+ if (!reiserfs_xattrs_user (inode->i_sb))
+ return -EOPNOTSUPP;
+
+ if (!S_ISREG (inode->i_mode) &&
+ (!S_ISDIR (inode->i_mode) || inode->i_mode & S_ISVTX))
+ return -EPERM;
+
+ error = reiserfs_permission_locked (inode, MAY_WRITE, NULL);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static int
+user_list (struct inode *inode, const char *name, int namelen, char *out)
+{
+ int len = namelen;
+ if (!reiserfs_xattrs_user (inode->i_sb))
+ return 0;
+
+ if (out)
+ memcpy (out, name, len);
+
+ return len;
+}
+
+struct reiserfs_xattr_handler user_handler = {
+ .prefix = XATTR_USER_PREFIX,
+ .get = user_get,
+ .set = user_set,
+ .del = user_del,
+ .list = user_list,
+};