minix/lib/other/_allocmem.c
Jorrit Herder f2a85e58d9 Various updates.
* Removed some variants of the SYS_GETINFO calls from the kernel;
  replaced them with new PM and utils libary functionality. Fixed
  bugs in utils library that used old get_kenv() variant.
* Implemented a buffer in the kernel to gather random data.
  Memory driver periodically checks this for /dev/random.
  A better random algorithm can now be implemented in the driver.
  Removed SYS_RANDOM; the SYS_GETINFO call is used instead.
* Remove SYS_KMALLOC from the kernel. Memory allocation can now
  be done at the process manager with new 'other' library functions.
2005-06-03 13:55:06 +00:00

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317 B
C

#include <lib.h>
#define allocmem _allocmem
#include <unistd.h>
PUBLIC int allocmem(size, base)
phys_bytes size; /* size of mem chunk requested */
phys_bytes *base; /* return base address */
{
message m;
m.m4_l1 = size;
if (_syscall(MM, ALLOCMEM, &m) < 0) return(-1);
*base = m.m4_l2;
return(0);
}