stralloc_readyplus(3) [debian man page]

stralloc_readyplus(3)					     Library Functions Manual					     stralloc_readyplus(3)

NAME

       stralloc_readyplus - provide space in a stralloc

SYNTAX

       #include <stralloc.h>

       int stralloc_readyplus(stralloc* sa,size_t len);

DESCRIPTION

       stralloc_readyplus  makes  sure	that sa has enough space allocated to hold an additional len bytes: If sa is not allocated, stralloc_ready
       allocates at least len bytes of space, and returns 1. If sa is already allocated, but not enough  to  hold  len	additional  bytes,  stral-
       loc_ready allocates at least sa->len+len bytes of space, copies the old string into the new space, frees the old space, and returns 1. Note
       that this changes sa.s.

       If stralloc_readyplus runs out of memory, it leaves sa alone and returns 0.

RETURN VALUE

       1 for success, 0 on memory allocation failure.

SEE ALSO

       stralloc_ready(3)

															     stralloc_readyplus(3)

COPY(9) 						   BSD Kernel Developer's Manual						   COPY(9)

NAME

     copy, copyin, copyout, copystr, copyinstr -- kernel copy functions

SYNOPSIS

     #include <sys/types.h>
     #include <sys/systm.h>

     int
     copyin(const void *uaddr, void *kaddr, size_t len);

     int
     copyout(const void *kaddr, void *uaddr, size_t len);

     int
     copystr(const void *kfaddr, void *kdaddr, size_t len, size_t *done);

     int
     copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done);

DESCRIPTION

     The copy functions are designed to copy contiguous data from one address to another.  All but copystr() copy data from user-space to kernel-
     space or vice-versa.

     The copy routines provide the following functionality:

     copyin()	   Copies len bytes of data from the user-space address uaddr to the kernel-space address kaddr.

     copyout()	   Copies len bytes of data from the kernel-space address kaddr to the user-space address uaddr.

     copystr()	   Copies a NUL-terminated string, at most len bytes long, from kernel-space address kfaddr to kernel-space address kdaddr.  The
		   number of bytes actually copied, including the terminating NUL, is returned in *done (if done is non-NULL).

     copyinstr()   Copies a NUL-terminated string, at most len bytes long, from user-space address uaddr to kernel-space address kaddr.  The num-
		   ber of bytes actually copied, including the terminating NUL, is returned in *done (if done is non-NULL).

RETURN VALUES

     The copy functions return 0 on success or EFAULT if a bad address is encountered.	In addition, the copystr(), and copyinstr() functions
     return ENAMETOOLONG if the string is longer than len bytes.

SEE ALSO

     fetch(9), store(9)

BSD
								  January 7, 1996							       BSD