[SOLVED] declare memory to struct in c

declare memory to struct in c

I have a struct abc in one file

struct abc {
    some variaables
    and functions
}

I am using this struct in other file as follows : struct abc *t = kmalloc(sizeof(struct abc)); kmalloc is equivalent to malloc

then following errors occur:

expected '=', ',', ';', 'asm' or '__attribute__' before 'struct'
error: variable 't' has initializer but incomplete type
warning: implicit declaration of function 'kmalloc'
invalid application of 'sizeof' to incomplete type 'struct trapframe'
storage size of 't' isn't known

where am I going wrong?

Solution

1, 2, 4 and 5 errors are caused by missing ; at the end of your struct declaration. It must be:

struct abc { some variaables and functions };

3 error is caused by missing the including of include/linux/slab.h file. You have to add the below file at the head of your source code file:

#include < linux/slab.h> # please remove the space before "linux"