inferno-os/lib9/sbrk-posix.c

#ifdef __APPLE_CC__	/* look for a better way */
#include "lib9.h"
#undef _POSIX_C_SOURCE 
#undef getwd

#include	<unistd.h>
#include        <pthread.h>
#include	<time.h>
#include	<termios.h>
#include	<signal.h>
#include	<pwd.h>
#include	<sys/resource.h>
#include	<sys/time.h>

#include 	<sys/socket.h>
#include	<sched.h>
#include	<errno.h>
#include        <sys/ucontext.h>

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

#include <mach/mach_init.h>

#include <mach/task.h>

#include <mach/vm_map.h>


__typeof__(sbrk(0))
sbrk(int size)
{
    void *brk;
    kern_return_t   err;
    
    err = vm_allocate( (vm_map_t) mach_task_self(),
                       (vm_address_t *)&brk,
                       size,
                       VM_FLAGS_ANYWHERE);
    if (err != KERN_SUCCESS)
        brk = (void*)-1;
    
    return brk;
}
#else
/* dummy function for everyone else, in case its ar complains about empty files */
void	__fakesbrk(void){}
#endif