How to initialize a structure pointer with another structure pointer inside by C? -

i try initialize structure pointer structure pointer inside c programming, otherwise segmentation fault. structure defined below:

`struct gfcontext_t{     char *filecontent;     size_t filelength;     char *response;     int socket_hd; };  struct gfserver_t{     char *servername;     int serverport;     int maxconnection;     ssize_t (*handler)(struct gfcontext_t *, char *, void * );     struct gfcontext_t *ctx;     int status; }; 

the initialization give inside function:

gfserver_t * gfserver_create(){     struct gfserver_t *gfs;     gfs=(gfserver_t*) malloc(sizeof(struct gfserver_t));     ......//how initialization?     return gfs; }` 

use:
gfs->ctx = malloc(sizeof(struct gfcontext_t));
or if want initialize gfcontext_t members null
gfs->ctx = calloc(1, sizeof(struct gfcontext_t));