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[PATCH] uml: sparse cleanups

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misc sparse annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2006-03-31 02:30:15 -08:00 committed by Linus Torvalds
parent 694a464e19
commit 4d338e1acc
16 changed files with 93 additions and 100 deletions
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8
arch/um/drivers/harddog_kern.c
View File

@ -104,7 +104,7 @@ static int harddog_release(struct inode *inode, struct file *file)
extern int ping_watchdog(int fd);
static ssize_t harddog_write(struct file *file, const char *data, size_t len,
static ssize_t harddog_write(struct file *file, const char __user *data, size_t len,
loff_t *ppos)
{
/*
@ -118,6 +118,7 @@ static ssize_t harddog_write(struct file *file, const char *data, size_t len,
static int harddog_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp= (void __user *)arg;
static struct watchdog_info ident = {
WDIOC_SETTIMEOUT,
0,
@ -127,13 +128,12 @@ static int harddog_ioctl(struct inode *inode, struct file *file,
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
if(copy_to_user((struct harddog_info *)arg, &ident,
sizeof(ident)))
if(copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0,(int *)arg);
return put_user(0,(int __user *)argp);
case WDIOC_KEEPALIVE:
return(ping_watchdog(harddog_out_fd));
}

10
arch/um/drivers/hostaudio_kern.c
View File

@ -67,8 +67,8 @@ MODULE_PARM_DESC(mixer, MIXER_HELP);
/* /dev/dsp file operations */
static ssize_t hostaudio_read(struct file *file, char *buffer, size_t count,
loff_t *ppos)
static ssize_t hostaudio_read(struct file *file, char __user *buffer,
size_t count, loff_t *ppos)
{
struct hostaudio_state *state = file->private_data;
void *kbuf;
@ -94,7 +94,7 @@ static ssize_t hostaudio_read(struct file *file, char *buffer, size_t count,
return(err);
}
static ssize_t hostaudio_write(struct file *file, const char *buffer,
static ssize_t hostaudio_write(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
struct hostaudio_state *state = file->private_data;
@ -152,7 +152,7 @@ static int hostaudio_ioctl(struct inode *inode, struct file *file,
case SNDCTL_DSP_CHANNELS:
case SNDCTL_DSP_SUBDIVIDE:
case SNDCTL_DSP_SETFRAGMENT:
if(get_user(data, (int *) arg))
if(get_user(data, (int __user *) arg))
return(-EFAULT);
break;
default:
@ -168,7 +168,7 @@ static int hostaudio_ioctl(struct inode *inode, struct file *file,
case SNDCTL_DSP_CHANNELS:
case SNDCTL_DSP_SUBDIVIDE:
case SNDCTL_DSP_SETFRAGMENT:
if(put_user(data, (int *) arg))
if(put_user(data, (int __user *) arg))
return(-EFAULT);
break;
default:

2
arch/um/drivers/slirp_kern.c
View File

@ -77,7 +77,7 @@ static int slirp_setup(char *str, char **mac_out, void *data)
int i=0;
*init = ((struct slirp_init)
{ argw : { { "slirp", NULL } } });
{ .argw = { { "slirp", NULL } } });
str = split_if_spec(str, mac_out, NULL);

18
arch/um/include/line.h
View File

@ -58,23 +58,17 @@ struct line {
};
#define LINE_INIT(str, d) \
{ init_str : str, \
init_pri : INIT_STATIC, \
valid : 1, \
throttled : 0, \
lock : SPIN_LOCK_UNLOCKED, \
buffer : NULL, \
head : NULL, \
tail : NULL, \
sigio : 0, \
driver : d, \
have_irq : 0 }
{ .init_str = str, \
.init_pri = INIT_STATIC, \
.valid = 1, \
.lock = SPIN_LOCK_UNLOCKED, \
.driver = d }
struct lines {
int num;
};
#define LINES_INIT(n) { num : n }
#define LINES_INIT(n) { .num = n }
extern void line_close(struct tty_struct *tty, struct file * filp);
extern int line_open(struct line *lines, struct tty_struct *tty);

5
arch/um/include/sysdep-i386/checksum.h
View File

@ -48,7 +48,8 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *
*/
static __inline__
unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst,
unsigned int csum_partial_copy_from_user(const unsigned char __user *src,
unsigned char *dst,
int len, int sum, int *err_ptr)
{
if(copy_from_user(dst, src, len)){
@ -192,7 +193,7 @@ static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
*/
#define HAVE_CSUM_COPY_USER
static __inline__ unsigned int csum_and_copy_to_user(const unsigned char *src,
unsigned char *dst,
unsigned char __user *dst,
int len, int sum, int *err_ptr)
{
if (access_ok(VERIFY_WRITE, dst, len)){

4
arch/um/kernel/exec_kern.c
View File

@ -58,14 +58,14 @@ long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
return(err);
}
long sys_execve(char *file, char __user *__user *argv,
long sys_execve(char __user *file, char __user *__user *argv,
char __user *__user *env)
{
long error;
char *filename;
lock_kernel();
filename = getname((char __user *) file);
filename = getname(file);
error = PTR_ERR(filename);
if (IS_ERR(filename)) goto out;
error = execve1(filename, argv, env);

2
arch/um/kernel/process_kern.c
View File

@ -407,7 +407,7 @@ static int proc_read_sysemu(char *buf, char **start, off_t offset, int size,int
return strlen(buf);
}
static int proc_write_sysemu(struct file *file,const char *buf, unsigned long count,void *data)
static int proc_write_sysemu(struct file *file,const char __user *buf, unsigned long count,void *data)
{
char tmp[2];

34
arch/um/kernel/ptrace.c
View File

@ -46,6 +46,7 @@ extern int poke_user(struct task_struct * child, long addr, long data);
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
int i, ret;
unsigned long __user *p = (void __user *)(unsigned long)data;
switch (request) {
/* when I and D space are separate, these will need to be fixed. */
@ -58,7 +59,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (copied != sizeof(tmp))
break;
ret = put_user(tmp, (unsigned long __user *) data);
ret = put_user(tmp, p);
break;
}
@ -136,15 +137,13 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
#ifdef PTRACE_GETREGS
case PTRACE_GETREGS: { /* Get all gp regs from the child. */
if (!access_ok(VERIFY_WRITE, (unsigned long *)data,
MAX_REG_OFFSET)) {
if (!access_ok(VERIFY_WRITE, p, MAX_REG_OFFSET)) {
ret = -EIO;
break;
}
for ( i = 0; i < MAX_REG_OFFSET; i += sizeof(long) ) {
__put_user(getreg(child, i),
(unsigned long __user *) data);
data += sizeof(long);
__put_user(getreg(child, i), p);
p++;
}
ret = 0;
break;
@ -153,15 +152,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
#ifdef PTRACE_SETREGS
case PTRACE_SETREGS: { /* Set all gp regs in the child. */
unsigned long tmp = 0;
if (!access_ok(VERIFY_READ, (unsigned *)data,
MAX_REG_OFFSET)) {
if (!access_ok(VERIFY_READ, p, MAX_REG_OFFSET)) {
ret = -EIO;
break;
}
for ( i = 0; i < MAX_REG_OFFSET; i += sizeof(long) ) {
__get_user(tmp, (unsigned long __user *) data);
__get_user(tmp, p);
putreg(child, i, tmp);
data += sizeof(long);
p++;
}
ret = 0;
break;
@ -188,13 +186,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
#endif
case PTRACE_FAULTINFO: {
/* Take the info from thread->arch->faultinfo,
* but transfer max. sizeof(struct ptrace_faultinfo).
* On i386, ptrace_faultinfo is smaller!
*/
ret = copy_to_user((unsigned long __user *) data,
&child->thread.arch.faultinfo,
sizeof(struct ptrace_faultinfo));
/* Take the info from thread->arch->faultinfo,
* but transfer max. sizeof(struct ptrace_faultinfo).
* On i386, ptrace_faultinfo is smaller!
*/
ret = copy_to_user(p, &child->thread.arch.faultinfo,
sizeof(struct ptrace_faultinfo));
if(ret)
break;
break;
@ -204,8 +201,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_LDT: {
struct ptrace_ldt ldt;
if(copy_from_user(&ldt, (unsigned long __user *) data,
sizeof(ldt))){
if(copy_from_user(&ldt, p, sizeof(ldt))){
ret = -EIO;
break;
}

4
arch/um/kernel/syscall_kern.c
View File

@ -104,7 +104,7 @@ long sys_pipe(unsigned long __user * fildes)
}
long sys_uname(struct old_utsname * name)
long sys_uname(struct old_utsname __user * name)
{
long err;
if (!name)
@ -115,7 +115,7 @@ long sys_uname(struct old_utsname * name)
return err?-EFAULT:0;
}
long sys_olduname(struct oldold_utsname * name)
long sys_olduname(struct oldold_utsname __user * name)
{
long error;

8
arch/um/kernel/trap_kern.c
View File

@ -198,7 +198,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
si.si_signo = SIGBUS;
si.si_errno = 0;
si.si_code = BUS_ADRERR;
si.si_addr = (void *)address;
si.si_addr = (void __user *)address;
current->thread.arch.faultinfo = fi;
force_sig_info(SIGBUS, &si, current);
} else if (err == -ENOMEM) {
@ -207,7 +207,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
} else {
BUG_ON(err != -EFAULT);
si.si_signo = SIGSEGV;
si.si_addr = (void *) address;
si.si_addr = (void __user *) address;
current->thread.arch.faultinfo = fi;
force_sig_info(SIGSEGV, &si, current);
}
@ -220,8 +220,8 @@ void bad_segv(struct faultinfo fi, unsigned long ip)
si.si_signo = SIGSEGV;
si.si_code = SEGV_ACCERR;
si.si_addr = (void *) FAULT_ADDRESS(fi);
current->thread.arch.faultinfo = fi;
si.si_addr = (void __user *) FAULT_ADDRESS(fi);
current->thread.arch.faultinfo = fi;
force_sig_info(SIGSEGV, &si, current);
}

28
arch/um/sys-i386/ptrace.c
View File

@ -124,22 +124,22 @@ unsigned long getreg(struct task_struct *child, int regno)
int peek_user(struct task_struct *child, long addr, long data)
{
/* read the word at location addr in the USER area. */
unsigned long tmp;
unsigned long tmp;
if ((addr & 3) || addr < 0)
return -EIO;
if ((addr & 3) || addr < 0)
return -EIO;
tmp = 0; /* Default return condition */
if(addr < MAX_REG_OFFSET){
tmp = getreg(child, addr);
}
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
tmp = child->thread.arch.debugregs[addr];
}
return put_user(tmp, (unsigned long *) data);
tmp = 0; /* Default return condition */
if(addr < MAX_REG_OFFSET){
tmp = getreg(child, addr);
}
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
tmp = child->thread.arch.debugregs[addr];
}
return put_user(tmp, (unsigned long __user *) data);
}
struct i387_fxsave_struct {

48
arch/um/sys-i386/signal.c
View File

@ -19,7 +19,7 @@
#include "skas.h"
static int copy_sc_from_user_skas(struct pt_regs *regs,
struct sigcontext *from)
struct sigcontext __user *from)
{
struct sigcontext sc;
unsigned long fpregs[HOST_FP_SIZE];
@ -57,7 +57,7 @@ static int copy_sc_from_user_skas(struct pt_regs *regs,
return(0);
}
int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate __user *to_fp,
struct pt_regs *regs, unsigned long sp)
{
struct sigcontext sc;
@ -92,7 +92,7 @@ int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
"errno = %d\n", err);
return(1);
}
to_fp = (to_fp ? to_fp : (struct _fpstate *) (to + 1));
to_fp = (to_fp ? to_fp : (struct _fpstate __user *) (to + 1));
sc.fpstate = to_fp;
if(err)
@ -113,10 +113,11 @@ int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
* saved pointer is in the kernel, but the sigcontext is in userspace, so we
* copy_to_user it.
*/
int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext __user *from,
int fpsize)
{
struct _fpstate *to_fp, *from_fp;
struct _fpstate *to_fp;
struct _fpstate __user *from_fp;
unsigned long sigs;
int err;
@ -131,13 +132,14 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
return(err);
}
int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp,
int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate __user *fp,
struct sigcontext *from, int fpsize, unsigned long sp)
{
struct _fpstate *to_fp, *from_fp;
struct _fpstate __user *to_fp;
struct _fpstate *from_fp;
int err;
to_fp = (fp ? fp : (struct _fpstate *) (to + 1));
to_fp = (fp ? fp : (struct _fpstate __user *) (to + 1));
from_fp = from->fpstate;
err = copy_to_user(to, from, sizeof(*to));
@ -165,7 +167,7 @@ static int copy_sc_from_user(struct pt_regs *to, void __user *from)
return(ret);
}
static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp,
static int copy_sc_to_user(struct sigcontext *to, struct _fpstate __user *fp,
struct pt_regs *from, unsigned long sp)
{
return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs),
@ -173,7 +175,7 @@ static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp,
copy_sc_to_user_skas(to, fp, from, sp)));
}
static int copy_ucontext_to_user(struct ucontext *uc, struct _fpstate *fp,
static int copy_ucontext_to_user(struct ucontext __user *uc, struct _fpstate __user *fp,
sigset_t *set, unsigned long sp)
{
int err = 0;
@ -188,7 +190,7 @@ static int copy_ucontext_to_user(struct ucontext *uc, struct _fpstate *fp,
struct sigframe
{
char *pretcode;
char __user *pretcode;
int sig;
struct sigcontext sc;
struct _fpstate fpstate;
@ -198,10 +200,10 @@ struct sigframe
struct rt_sigframe
{
char *pretcode;
char __user *pretcode;
int sig;
struct siginfo *pinfo;
void *puc;
struct siginfo __user *pinfo;
void __user *puc;
struct siginfo info;
struct ucontext uc;
struct _fpstate fpstate;
@ -213,16 +215,16 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
sigset_t *mask)
{
struct sigframe __user *frame;
void *restorer;
void __user *restorer;
unsigned long save_sp = PT_REGS_SP(regs);
int err = 0;
stack_top &= -8UL;
frame = (struct sigframe *) stack_top - 1;
frame = (struct sigframe __user *) stack_top - 1;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
return 1;
restorer = (void *) frame->retcode;
restorer = frame->retcode;
if(ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
@ -278,16 +280,16 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
siginfo_t *info, sigset_t *mask)
{
struct rt_sigframe __user *frame;
void *restorer;
void __user *restorer;
unsigned long save_sp = PT_REGS_SP(regs);
int err = 0;
stack_top &= -8UL;
frame = (struct rt_sigframe *) stack_top - 1;
frame = (struct rt_sigframe __user *) stack_top - 1;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
return 1;
restorer = (void *) frame->retcode;
restorer = frame->retcode;
if(ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
@ -333,7 +335,7 @@ err:
long sys_sigreturn(struct pt_regs regs)
{
unsigned long sp = PT_REGS_SP(&current->thread.regs);
struct sigframe __user *frame = (struct sigframe *)(sp - 8);
struct sigframe __user *frame = (struct sigframe __user *)(sp - 8);
sigset_t set;
struct sigcontext __user *sc = &frame->sc;
unsigned long __user *oldmask = &sc->oldmask;
@ -365,8 +367,8 @@ long sys_sigreturn(struct pt_regs regs)
long sys_rt_sigreturn(struct pt_regs regs)
{
unsigned long __user sp = PT_REGS_SP(&current->thread.regs);
struct rt_sigframe __user *frame = (struct rt_sigframe *) (sp - 4);
unsigned long sp = PT_REGS_SP(&current->thread.regs);
struct rt_sigframe __user *frame = (struct rt_sigframe __user *) (sp - 4);
sigset_t set;
struct ucontext __user *uc = &frame->uc;
int sig_size = _NSIG_WORDS * sizeof(unsigned long);

2
arch/um/sys-i386/syscalls.c
View File

@ -104,7 +104,7 @@ long sys_ipc (uint call, int first, int second,
union semun fourth;
if (!ptr)
return -EINVAL;
if (get_user(fourth.__pad, (void **) ptr))
if (get_user(fourth.__pad, (void __user * __user *) ptr))
return -EFAULT;
return sys_semctl (first, second, third, fourth);
}

2
include/asm-um/ptrace-generic.h
View File

@ -28,7 +28,7 @@ struct pt_regs {
union uml_pt_regs regs;
};
#define EMPTY_REGS { regs : EMPTY_UML_PT_REGS }
#define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS }
#define PT_REGS_IP(r) UPT_IP(&(r)->regs)
#define PT_REGS_SP(r) UPT_SP(&(r)->regs)

16
include/asm-um/thread_info.h
View File

@ -27,14 +27,14 @@ struct thread_info {
#define INIT_THREAD_INFO(tsk) \
{ \
task: &tsk, \
exec_domain: &default_exec_domain, \
flags: 0, \
cpu: 0, \
preempt_count: 1, \
addr_limit: KERNEL_DS, \
restart_block: { \
fn: do_no_restart_syscall, \
.task = &tsk, \
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \
}

2
include/asm-um/uaccess.h
View File

@ -57,7 +57,7 @@
({ \
const __typeof__((*(ptr))) __user *private_ptr = (ptr); \
(access_ok(VERIFY_READ, private_ptr, sizeof(*private_ptr)) ? \
__get_user(x, private_ptr) : ((x) = 0, -EFAULT)); \
__get_user(x, private_ptr) : ((x) = (__typeof__(*ptr))0, -EFAULT)); \
})
#define __put_user(x, ptr) \