ITERATE_SUPERS_TYPE(9) The Linux VFS ITERATE_SUPERS_TYPE(9)NAME
iterate_supers_type - call function for superblocks of given type
void iterate_supers_type(struct file_system_type * type, void (*f) (struct super_block *, void *), void * arg);
function to call
argument to pass to it
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)
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CALL_USERMODEHELPER_(9) Module Support CALL_USERMODEHELPER_(9)NAME
call_usermodehelper_setup - prepare to call a usermode helper
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);
path to usermode executable
arg vector for process
environment for process
gfp mask for memory allocation
an init function
a cleanup function
arbitrary context sensitive data
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)
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