diff options
Diffstat (limited to 'arch/um/kernel/skas/mem_user.c')
| -rw-r--r-- | arch/um/kernel/skas/mem_user.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/arch/um/kernel/skas/mem_user.c b/arch/um/kernel/skas/mem_user.c deleted file mode 100644 index b0980ff3bd9..00000000000 --- a/arch/um/kernel/skas/mem_user.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include <signal.h> -#include <errno.h> -#include <sys/mman.h> -#include <sys/wait.h> -#include <asm/page.h> -#include <asm/unistd.h> -#include "mem_user.h" -#include "mem.h" -#include "mm_id.h" -#include "user.h" -#include "os.h" -#include "proc_mm.h" -#include "ptrace_user.h" -#include "user_util.h" -#include "kern_util.h" -#include "task.h" -#include "registers.h" -#include "uml-config.h" -#include "sysdep/ptrace.h" -#include "sysdep/stub.h" -#include "skas.h" - -extern unsigned long syscall_stub, __syscall_stub_start; - -extern void wait_stub_done(int pid, int sig, char * fname); - -static long run_syscall_stub(struct mm_id * mm_idp, int syscall, - unsigned long *args) -{ - int n, pid = mm_idp->u.pid; - unsigned long regs[MAX_REG_NR]; - - get_safe_registers(regs); - regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + - ((unsigned long) &syscall_stub - - (unsigned long) &__syscall_stub_start); - /* XXX Don't have a define for starting a syscall */ - regs[REGS_SYSCALL_NR] = syscall; - regs[REGS_SYSCALL_ARG1] = args[0]; - regs[REGS_SYSCALL_ARG2] = args[1]; - regs[REGS_SYSCALL_ARG3] = args[2]; - regs[REGS_SYSCALL_ARG4] = args[3]; - regs[REGS_SYSCALL_ARG5] = args[4]; - regs[REGS_SYSCALL_ARG6] = args[5]; - n = ptrace_setregs(pid, regs); - if(n < 0){ - printk("run_syscall_stub : PTRACE_SETREGS failed, " - "errno = %d\n", n); - return(n); - } - - wait_stub_done(pid, 0, "run_syscall_stub"); - - return(*((unsigned long *) mm_idp->stack)); -} - -int map(struct mm_id *mm_idp, unsigned long virt, unsigned long len, - int r, int w, int x, int phys_fd, unsigned long long offset) -{ - int prot, n; - - prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | - (x ? PROT_EXEC : 0); - - if(proc_mm){ - struct proc_mm_op map; - int fd = mm_idp->u.mm_fd; - map = ((struct proc_mm_op) { .op = MM_MMAP, - .u = - { .mmap = - { .addr = virt, - .len = len, - .prot = prot, - .flags = MAP_SHARED | - MAP_FIXED, - .fd = phys_fd, - .offset= offset - } } } ); - n = os_write_file(fd, &map, sizeof(map)); - if(n != sizeof(map)) - printk("map : /proc/mm map failed, err = %d\n", -n); - } - else { - long res; - unsigned long args[] = { virt, len, prot, - MAP_SHARED | MAP_FIXED, phys_fd, - MMAP_OFFSET(offset) }; - - res = run_syscall_stub(mm_idp, STUB_MMAP_NR, args); - if((void *) res == MAP_FAILED) - printk("mmap stub failed, errno = %d\n", res); - } - - return 0; -} - -int unmap(struct mm_id *mm_idp, void *addr, unsigned long len) -{ - int n; - - if(proc_mm){ - struct proc_mm_op unmap; - int fd = mm_idp->u.mm_fd; - unmap = ((struct proc_mm_op) { .op = MM_MUNMAP, - .u = - { .munmap = - { .addr = - (unsigned long) addr, - .len = len } } } ); - n = os_write_file(fd, &unmap, sizeof(unmap)); - if(n != sizeof(unmap)) { - if(n < 0) - return(n); - else if(n > 0) - return(-EIO); - } - } - else { - int res; - unsigned long args[] = { (unsigned long) addr, len, 0, 0, 0, - 0 }; - - res = run_syscall_stub(mm_idp, __NR_munmap, args); - if(res < 0) - printk("munmap stub failed, errno = %d\n", res); - } - - return(0); -} - -int protect(struct mm_id *mm_idp, unsigned long addr, unsigned long len, - int r, int w, int x) -{ - struct proc_mm_op protect; - int prot, n; - - prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | - (x ? PROT_EXEC : 0); - - if(proc_mm){ - int fd = mm_idp->u.mm_fd; - protect = ((struct proc_mm_op) { .op = MM_MPROTECT, - .u = - { .mprotect = - { .addr = - (unsigned long) addr, - .len = len, - .prot = prot } } } ); - - n = os_write_file(fd, &protect, sizeof(protect)); - if(n != sizeof(protect)) - panic("protect failed, err = %d", -n); - } - else { - int res; - unsigned long args[] = { addr, len, prot, 0, 0, 0 }; - - res = run_syscall_stub(mm_idp, __NR_mprotect, args); - if(res < 0) - panic("mprotect stub failed, errno = %d\n", res); - } - - return(0); -} - -void before_mem_skas(unsigned long unused) -{ -} |