14 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
49 static int read_ldt(void __user * ptr, unsigned long bytecount)  in read_ldt()  argument
57 	if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)  in read_ldt()
58 		bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;  in read_ldt()
59 	err = bytecount;  in read_ldt()
64 		if (size > bytecount)  in read_ldt()
65 			size = bytecount;  in read_ldt()
68 		bytecount -= size;  in read_ldt()
72 		for (i=0; i<ldt->entry_count/LDT_ENTRIES_PER_PAGE && bytecount;  in read_ldt()
75 			if (size > bytecount)  in read_ldt()
76 				size = bytecount;  in read_ldt()
81 			bytecount -= size;  in read_ldt()
87 	if (bytecount == 0 || err == -EFAULT)  in read_ldt()
90 	if (clear_user(ptr, bytecount))  in read_ldt()
97 static int read_default_ldt(void __user * ptr, unsigned long bytecount)  in read_default_ldt()  argument
101 	if (bytecount > 5*LDT_ENTRY_SIZE)  in read_default_ldt()
102 		bytecount = 5*LDT_ENTRY_SIZE;  in read_default_ldt()
104 	err = bytecount;  in read_default_ldt()
110 	if (clear_user(ptr, bytecount))  in read_default_ldt()
116 static int write_ldt(void __user * ptr, unsigned long bytecount, int func)  in write_ldt()  argument
126 	if (bytecount != sizeof(ldt_info))  in write_ldt()
203 			       unsigned long bytecount)  in do_modify_ldt_skas()  argument
209 			ret = read_ldt(ptr, bytecount);  in do_modify_ldt_skas()
213 			ret = write_ldt(ptr, bytecount, func);  in do_modify_ldt_skas()
216 			ret = read_default_ldt(ptr, bytecount);  in do_modify_ldt_skas()
368 int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)  in sys_modify_ldt()  argument
370 	return do_modify_ldt_skas(func, ptr, bytecount);  in sys_modify_ldt()