fs/devpts/xattr_security.c

   1 /*
   2  * File: fs/devpts/xattr_security.c
   3  */
   4
   5 #include <linux/module.h>
   6 #include <linux/string.h>
   7 #include <linux/fs.h>
   8 #include <linux/security.h>
   9 #include "xattr.h"
  10
  11 #define XATTR_SECURITY_PREFIX "security."
  12
  13 static size_t
  14 devpts_xattr_security_list(struct dentry *dentry, char *buffer)
  15 {
  16         return security_inode_listsecurity(dentry, buffer);
  17 }
  18
  19 static int
  20 devpts_xattr_security_get(struct dentry *dentry, const char *name,
  21                           void *buffer, size_t size)
  22 {
  23         if (strcmp(name, "") == 0)
  24                 return -EINVAL;
  25         return security_inode_getsecurity(dentry, name, buffer, size);
  26 }
  27
  28 static int
  29 devpts_xattr_security_set(struct dentry *dentry, const char *name,
  30                           const void *value, size_t size, int flags)
  31 {
  32         if (strcmp(name, "") == 0)
  33                 return -EINVAL;
  34         return security_inode_setsecurity(dentry, name, value, size, flags);
  35 }
  36
  37 struct devpts_xattr_handler devpts_xattr_security_handler = {
  38         .prefix = XATTR_SECURITY_PREFIX,
  39         .list   = devpts_xattr_security_list,
  40         .get    = devpts_xattr_security_get,
  41         .set    = devpts_xattr_security_set,
  42 };