“gjgjh” Code-Antworten

gjgjh

 struct iovec
 {
  void *iov_base;
  _ _kernel_size_t iov_len;
 };
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gjgjh

crw-rw-rw- 1 root  root  144,  1 Jan 1 1970 0
crw-rw-rw- 1 root  root  144,  2 Jan 1 1970 1
crw-rw-rw- 1 root  root  144,  3 Jan 1 1970 2
crw-rw-rw- 1 root  root  144,  4 Jan 1 1970 3
crw-rw-rw- 1 root  root  144,  5 Jan 1 1970 pipe0
crw-rw-rw- 1 root  root  144,  6 Jan 1 1970 pipe1
crw-rw-rw- 1 root  root  144,  7 Jan 1 1970 pipe2
crw-rw-rw- 1 root  root  144,  8 Jan 1 1970 pipe3
crw-rw-rw- 1 root  root  144, 12 Jan 1 1970 priv
crw-rw-rw- 1 root  root  144,  9 Jan 1 1970 single
crw-rw-rw- 1 root  root  144, 10 Jan 1 1970 user
crw-rw-rw- 1 root  root  144, 11 Jan 1 1970 wuser
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gjgjh

 
#ifdef LINUX_20
# define INODE_FROM_F(filp) ((filp)->f_inode)
#else
# define INODE_FROM_F(filp) ((filp)->f_dentry->d_inode)
#endif
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gjgjh

 void memcpy_fromfs(void *to, const void *from, unsigned long count);
 void memcpy_tofs(void *to, const void *from, unsigned long count);
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gjgjh

 ssize_t (*readv) (struct file *filp, const struct iovec *iov, 
      unsigned long count, loff_t *ppos);
 ssize_t (*writev) (struct file *filp, const struct iovec *iov, 
      unsigned long count, loff_t *ppos);
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gjgjh

#include <linux/devfs_fs_kernel.h>

devfs_handle_t devfs_mk_dir (devfs_handle_t dir,
  const char *name, void *info);

devfs_handle_t devfs_register (devfs_handle_t dir,
  const char *name, unsigned int flags,
  unsigned int major, unsigned int minor,
  umode_t mode, void *ops, void *info);

  void devfs_unregister (devfs_handle_t de);
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gjgjh

 #include <devfs_fs_kernel.h>

 int init_module()
 {
  /* request a major: does nothing if devfs is used */
  result = devfs_register_chrdev(major, "name", &fops);
  if (result < 0) return result;

  /* register using devfs: does nothing if not in use */
  devfs_register(NULL, "name", /* .... */ );
  return 0;
 }
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gjgjh

 
#ifdef LINUX_20
# ifdef MUTEX_LOCKED /* Only if semaphore.h included */
  extern inline void sema_init (struct semaphore *sem, int val)
  {
   sem->count = val;
   sem->waking = sem->lock = 0;
   sem->wait = NULL;
  }
# endif
#endif /* LINUX_20 */
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