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Reorganized system call library; uses separate file per call now.

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New configuration header file to include/ exclude functionality.
Extracted privileged features from struct proc and create new struct priv.
Renamed various system calls for readability.
This commit is contained in:
Jorrit Herder
2005-07-14 15:12:12 +00:00
parent 355d22ff06
commit 42ab148155
53 changed files with 1957 additions and 1503 deletions
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53
kernel/system/do_newmap.c Normal file
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/* The system call implemented in this file:
* m_type: SYS_NEWMAP
*
* The parameters for this system call are:
* m1_i1: PR_PROC_NR (install new map for this process)
* m1_p1: PR_MEM_PTR (pointer to memory map)
*/
#include "../system.h"
#if USE_NEWMAP
/*===========================================================================*
* do_newmap *
*===========================================================================*/
PUBLIC int do_newmap(m_ptr)
message *m_ptr; /* pointer to request message */
{
/* Handle sys_newmap(). Fetch the memory map from PM. */
register struct proc *rp;
phys_bytes src_phys;
int caller; /* whose space has the new map (usually PM) */
int k; /* process whose map is to be loaded */
int old_flags; /* value of flags before modification */
struct mem_map *map_ptr; /* virtual address of map inside caller (PM) */
/* Extract message parameters and copy new memory map from PM. */
caller = m_ptr->m_source;
k = m_ptr->PR_PROC_NR;
map_ptr = (struct mem_map *) m_ptr->PR_MEM_PTR;
if (!isokprocn(k)) return(EINVAL);
rp = proc_addr(k); /* ptr to entry of user getting new map */
/* Copy the map from PM. */
src_phys = umap_local(proc_addr(caller), D, (vir_bytes) map_ptr,
sizeof(rp->p_memmap));
if (src_phys == 0) return(EFAULT);
phys_copy(src_phys,vir2phys(rp->p_memmap),(phys_bytes)sizeof(rp->p_memmap));
#if (CHIP != M68000)
alloc_segments(rp);
#else
pmmu_init_proc(rp);
#endif
old_flags = rp->p_rts_flags; /* save the previous value of the flags */
rp->p_rts_flags &= ~NO_MAP;
if (old_flags != 0 && rp->p_rts_flags == 0) lock_ready(rp);
return(OK);
}
#endif /* USE_NEWMAP */