iterate_supers_type(9) [centos man page]

ITERATE_SUPERS_TYPE(9)						   The Linux VFS					    ITERATE_SUPERS_TYPE(9)

NAME

       iterate_supers_type - call function for superblocks of given type

SYNOPSIS

       void iterate_supers_type(struct file_system_type * type, void (*f) (struct super_block *, void *), void * arg);

ARGUMENTS

       type
	   fs type

       f
	   function to call

       arg
	   argument to pass to it

DESCRIPTION

       Scans the superblock list and calls given function, passing it locked superblock and given argument.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						    ITERATE_SUPERS_TYPE(9)

CALL_USERMODEHELPER_(9) 					  Module Support					   CALL_USERMODEHELPER_(9)

NAME

       call_usermodehelper_setup - prepare to call a usermode helper

SYNOPSIS

       struct subprocess_info * call_usermodehelper_setup(char * path, char ** argv, char ** envp, gfp_t gfp_mask,
							  int (*init) (struct subprocess_info *info, struct cred *new),
							  void (*cleanup) (struct subprocess_info *info), void * data);

ARGUMENTS

       path
	   path to usermode executable

       argv
	   arg vector for process

       envp
	   environment for process

       gfp_mask
	   gfp mask for memory allocation

       init
	   an init function

       cleanup
	   a cleanup function

       data
	   arbitrary context sensitive data

DESCRIPTION

       Returns either NULL on allocation failure, or a subprocess_info structure. This should be passed to call_usermodehelper_exec to exec the
       process and free the structure.

       The init function is used to customize the helper process prior to exec. A non-zero return code causes the process to error out, exit, and
       return the failure to the calling process

       The cleanup function is just before ethe subprocess_info is about to be freed. This can be used for freeing the argv and envp. The Function
       must be runnable in either a process context or the context in which call_usermodehelper_exec is called.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   CALL_USERMODEHELPER_(9)