20 lines
368 B
C
Executable file
20 lines
368 B
C
Executable file
#include <lib.h>
|
|
#define sbrk _sbrk
|
|
#include <unistd.h>
|
|
|
|
extern char *_brksize;
|
|
|
|
PUBLIC char *sbrk(incr)
|
|
int incr;
|
|
{
|
|
char *newsize, *oldsize;
|
|
|
|
oldsize = _brksize;
|
|
newsize = _brksize + incr;
|
|
if ((incr > 0 && newsize < oldsize) || (incr < 0 && newsize > oldsize))
|
|
return( (char *) -1);
|
|
if (brk(newsize) == 0)
|
|
return(oldsize);
|
|
else
|
|
return( (char *) -1);
|
|
}
|