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allow empty senda

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This commit is contained in:
Ben Gras 2009-06-08 04:39:26 +00:00
parent 9e72241374
commit 782133423e
2 changed files with 15 additions and 9 deletions
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10
kernel/arch/i386/exception.c
View File

@ -44,7 +44,11 @@ void pagefault(vir_bytes old_eip, struct proc *pr, int trap_errno,
vmassert(pr->p_seg.p_cr3 == read_cr3());
} else {
u32_t cr3;
lock;
int u = 0;
if(!intr_disabled()) {
lock;
u = 1;
}
cr3 = read_cr3();
vmassert(ptproc);
if(ptproc->p_seg.p_cr3 != cr3) {
@ -58,7 +62,9 @@ void pagefault(vir_bytes old_eip, struct proc *pr, int trap_errno,
vm_print(cr3);
vm_print(ptproc->p_seg.p_cr3);
}
unlock;
if(u) {
unlock;
}
}
test_eip = k_reenter ? old_eip : pr->p_reg.pc;

14
kernel/proc.c
View File

@ -732,13 +732,6 @@ size_t size;
vir_bytes table_v = (vir_bytes) table;
vir_bytes linaddr;
if(!(linaddr = umap_local(caller_ptr, D, (vir_bytes) table,
size * sizeof(*table)))) {
printf("mini_senda: umap_local failed; 0x%lx len 0x%lx\n",
table, size * sizeof(*table));
return EFAULT;
}
privp= priv(caller_ptr);
if (!(privp->s_flags & SYS_PROC))
{
@ -757,6 +750,13 @@ size_t size;
return OK;
}
if(!(linaddr = umap_local(caller_ptr, D, (vir_bytes) table,
size * sizeof(*table)))) {
printf("mini_senda: umap_local failed; 0x%lx len 0x%lx\n",
table, size * sizeof(*table));
return EFAULT;
}
/* Limit size to something reasonable. An arbitrary choice is 16
* times the number of process table entries.
*