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.

include/minix/callnr.h

@@ -71,5 +71,5 @@
 #define GETPROCNR         80    /* to PM */
 
 #define FSTATFS	 	  82	/* to FS */
-#define MEM_ALLOC	  83	/* to PM */
-#define MEM_FREE	  84	/* to PM */
+#define ALLOCMEM	  83	/* to PM */
+#define FREEMEM		  84	/* to PM */

include/minix/com.h

@@ -196,7 +196,7 @@
 #  define SYS_ABORT      9	/* sys_abort() */
 #  define SYS_KILL      10	/* sys_kill(proc_nr, sig) */
 #  define SYS_UMAP      11	/* sys_umap(proc_nr, etc) */
-#  define SYS_RANDOM    12	/* sys_random(...) */
+
 #  define SYS_TRACE     13	/* sys_trace(req,pid,addr,data) */
 
 #  define SYS_SIGNALRM	15	/* sys_signalrm(proc_nr, ticks) */
@@ -210,7 +210,7 @@
 #  define SYS_DEVIO     23	/* sys_devio(port, value) */
 #  define SYS_VDEVIO    24	/* sys_vdevio(buf_ptr, nr_ports) */
 #  define SYS_IRQCTL    25	/* sys_irqctl() */
-#  define SYS_KMALLOC   26	/* sys_kmalloc(size, phys_base) */
+
 #  define SYS_IOPENABLE 27	/* sys_enable_iop() */
 #  define SYS_SEGCTL    28	/* sys_segctl(*idx, *seg, *off, phys, size) */
 #  define SYS_EXIT      29	/* sys_exit(status) */
@@ -220,7 +220,7 @@
 #  define SYS_PHYSZERO  33	/* sys_physzero(addr,count) */
 #define NR_SYS_CALLS	34	/* number of system calls */ 
 
-/* Field names for SYS_MEM, SYS_KMALLOC. */
+/* Field names for SYS_SEGCTL. */
 #define MEM_CHUNK_BASE	m4_l1	/* physical base address */
 #define MEM_CHUNK_SIZE	m4_l2	/* size of mem chunk */
 #define MEM_TOT_SIZE	m4_l3	/* total memory size */
@@ -306,8 +306,8 @@
 #define I_REQUEST      m7_i3	/* what info to get */
 #   define GET_KINFO	   0	/* get kernel information structure */
 #   define GET_IMAGE	   1	/* get system image table */
-#   define GET_PROCTAB	   2	/* get (kernel) process table */
-#   define GET_PROCNR	   3	/* find nr of process with name */
+#   define GET_PROCTAB	   2	/* get kernel process table */
+#   define GET_RANDOMNESS  3	/* get randomness buffer */
 #   define GET_MONPARAMS   4	/* get monitor parameters */
 #   define GET_KENV	   5	/* get kernel environment string */
 #   define GET_IRQHOOKS	   6	/* get the IRQ table */

include/minix/syslib.h

@@ -109,7 +109,6 @@ _PROTOTYPE(int sys_umap, (int proc_nr, int seg, vir_bytes vir_addr,
 _PROTOTYPE(int sys_segctl, (int *index, u16_t *seg, vir_bytes *off,
 	phys_bytes phys, vir_bytes size));
 _PROTOTYPE(int sys_enable_iop, (int proc_nr)				);
-_PROTOTYPE(int sys_kmalloc, (size_t size, phys_bytes *phys_base)		);
 
 /* Shorthands for sys_getinfo() system call. */
 #define sys_getkmessages(dst)	sys_getinfo(GET_KMESSAGES, dst, 0,0,0)
@@ -117,14 +116,12 @@ _PROTOTYPE(int sys_kmalloc, (size_t size, phys_bytes *phys_base)		);
 #define sys_getmachine(dst)	sys_getinfo(GET_MACHINE, dst, 0,0,0)
 #define sys_getproctab(dst)	sys_getinfo(GET_PROCTAB, dst, 0,0,0)
 #define sys_getproc(dst,nr)	sys_getinfo(GET_PROC, dst, 0,0, nr)
-#define sys_getprocnr(dst,k,kl)	sys_getinfo(GET_PROCNR, dst, 0,k,kl)
+#define sys_getrandomness(dst)	sys_getinfo(GET_RANDOMNESS, dst, 0,0,0)
 #define sys_getimage(dst)	sys_getinfo(GET_IMAGE, dst, 0,0,0)
 #define sys_getirqhooks(dst)	sys_getinfo(GET_IRQHOOKS, dst, 0,0,0)
 #define sys_getmemchunks(dst)	sys_getinfo(GET_MEMCHUNKS, dst, 0,0,0)
 #define sys_getmonparams(v,vl)	sys_getinfo(GET_MONPARAMS, v,vl, 0,0)
-#define sys_getkenv(k,kl,v,vl)	sys_getinfo(GET_KENV, v,vl, k,kl)
 #define sys_getschedinfo(v1,v2)	sys_getinfo(GET_SCHEDINFO, v1,0, v2,0)
-#define sys_getkaddr(dst)	sys_getinfo(GET_KADDRESSES, dst, 0,0,0)
 #define sys_getlocktimings(dst)	sys_getinfo(GET_LOCKTIMING, dst, 0,0,0)
 _PROTOTYPE(int sys_getinfo, (int request, void *val_ptr, int val_len,
 				 void *key_ptr, int key_len)		);

include/minix/type.h

@@ -1,6 +1,10 @@
 #ifndef _TYPE_H
 #define _TYPE_H
 
+#ifndef _CONFIG_H
+#include <minix/config.h>
+#endif
+
 #ifndef _TYPES_H
 #include <sys/types.h>
 #endif
@@ -102,9 +106,6 @@ struct kinfo {
   phys_bytes bootdev_size;
   phys_bytes params_base;	/* parameters passed by boot monitor */
   phys_bytes params_size;
-  long nr_ntf_pending;
-  long lock_notify;
-  long lock_send;
   int nr_procs;			/* number of user processes */
   int nr_tasks;			/* number of kernel tasks */
   char version[8];		/* kernel version number */

include/unistd.h

@@ -125,6 +125,9 @@ _PROTOTYPE( int unlink, (const char *_path)				);
 _PROTOTYPE( ssize_t write, (int _fd, const void *_buf, size_t _n)	);
 
 #ifdef _MINIX
+#ifndef _TYPE_H
+#include <minix/type.h>
+#endif
 _PROTOTYPE( int brk, (char *_addr)					);
 _PROTOTYPE( int chroot, (const char *_name)				);
 _PROTOTYPE( int mknod, (const char *_name, Mode_t _mode, Dev_t _addr)	);
@@ -145,6 +148,8 @@ _PROTOTYPE( char *crypt, (const char *_key, const char *_salt)		);
 _PROTOTYPE( int getsysinfo, (int who, int what, void *where)		);
 _PROTOTYPE( int getprocnr, (int *proc_nr)				);
 _PROTOTYPE( int findproc, (char *proc_name, int *proc_nr)		);
+_PROTOTYPE( int allocmem, (phys_bytes size, phys_bytes *base)		);
+_PROTOTYPE( int freemem, (phys_bytes size, phys_bytes base)		);
 #endif
 
 _PROTOTYPE( int setcache, (int kb));