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Commit 9c101b04 authored by Linus Torvalds's avatar Linus Torvalds
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Add __user pointer annotations to arch/ppc64/kernel/sys_ppc32.c 

This also fixes a terminally broken sys32_utimes() implementation.
parent b0876e8a
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Showing with 89 additions and 87 deletions
arch/ppc64/kernel/sys_ppc32.c
View file @ 9c101b04
......@@ -78,7 +78,7 @@
#include "pci.h"
/* readdir & getdents */
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
#define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
struct old_linux_dirent32 {
......@@ -89,7 +89,7 @@ struct old_linux_dirent32 {
};
struct readdir_callback32 {
struct old_linux_dirent32 * dirent;
struct old_linux_dirent32 __user * dirent;
int count;
};
......@@ -97,7 +97,7 @@ static int fillonedir(void * __buf, const char * name, int namlen,
off_t offset, ino_t ino, unsigned int d_type)
{
struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
struct old_linux_dirent32 * dirent;
struct old_linux_dirent32 __user * dirent;
if (buf->count)
return -EINVAL;
......@@ -111,7 +111,7 @@ static int fillonedir(void * __buf, const char * name, int namlen,
return 0;
}
asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 *dirent, unsigned int count)
asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
{
int error = -EBADF;
struct file * file;
......@@ -143,8 +143,8 @@ struct linux_dirent32 {
};
struct getdents_callback32 {
struct linux_dirent32 * current_dir;
struct linux_dirent32 * previous;
struct linux_dirent32 __user * current_dir;
struct linux_dirent32 __user * previous;
int count;
int error;
};
......@@ -152,7 +152,7 @@ struct getdents_callback32 {
static int filldir(void * __buf, const char * name, int namlen, off_t offset,
ino_t ino, unsigned int d_type)
{
struct linux_dirent32 * dirent;
struct linux_dirent32 __user * dirent;
struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2);
......@@ -176,7 +176,7 @@ static int filldir(void * __buf, const char * name, int namlen, off_t offset,
if (__put_user(d_type, (char *) dirent + reclen - 1))
goto efault;
buf->previous = dirent;
dirent = (void *)dirent + reclen;
dirent = (void __user *)dirent + reclen;
buf->current_dir = dirent;
buf->count -= reclen;
return 0;
......@@ -185,11 +185,11 @@ static int filldir(void * __buf, const char * name, int namlen, off_t offset,
return -EFAULT;
}
long sys32_getdents(unsigned int fd, struct linux_dirent32 *dirent,
asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent,
unsigned int count)
{
struct file * file;
struct linux_dirent32 * lastdirent;
struct linux_dirent32 __user * lastdirent;
struct getdents_callback32 buf;
int error;
......@@ -233,7 +233,7 @@ asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
}
int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
{
long err;
......@@ -291,7 +291,7 @@ struct timex32 {
extern int do_adjtimex(struct timex *);
extern void ppc_adjtimex(void);
asmlinkage long sys32_adjtimex(struct timex32 *utp)
asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
{
struct timex txc;
int ret;
......@@ -362,7 +362,7 @@ asmlinkage long sys32_pause(void)
static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
{
long usec;
......@@ -376,7 +376,7 @@ static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
return 0;
}
static inline long put_tv32(struct compat_timeval *o, struct timeval *i)
static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
{
return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
(__put_user(i->tv_sec, &o->tv_sec) |
......@@ -400,16 +400,18 @@ struct sysinfo32 {
char _f[20-2*sizeof(int)-sizeof(int)];
};
asmlinkage long sys32_sysinfo(struct sysinfo32 *info)
asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
{
struct sysinfo s;
int ret, err;
int bitcount=0;
mm_segment_t old_fs = get_fs ();
/* The __user cast is valid due to set_fs() */
set_fs (KERNEL_DS);
ret = sys_sysinfo(&s);
ret = sys_sysinfo((struct sysinfo __user *)&s);
set_fs (old_fs);
/* Check to see if any memory value is too large for 32-bit and
* scale down if needed.
*/
......@@ -455,7 +457,7 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 *info)
sorts of things, like timeval and itimerval. */
extern struct timezone sys_tz;
asmlinkage long sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
{
if (tv) {
struct timeval ktv;
......@@ -473,7 +475,7 @@ asmlinkage long sys32_gettimeofday(struct compat_timeval *tv, struct timezone *t
asmlinkage long sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
{
struct timespec kts;
struct timezone ktz;
......@@ -560,17 +562,20 @@ long sys32_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t* offset, u32 count)
asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
{
mm_segment_t old_fs = get_fs();
int ret;
off_t of;
off_t __user *up;
if (offset && get_user(of, offset))
return -EFAULT;
/* The __user pointer cast is valid because of the set_fs() */
set_fs(KERNEL_DS);
ret = sys_sendfile((int)out_fd, (int)in_fd, offset ? &of : NULL, count);
up = offset ? (off_t __user *) &of : NULL;
ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
set_fs(old_fs);
if (offset && put_user(of, offset))
......@@ -579,17 +584,20 @@ asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t* offset, u32
return ret;
}
asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t *offset, s32 count)
asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
{
mm_segment_t old_fs = get_fs();
int ret;
loff_t lof;
loff_t __user *up;
if (offset && get_user(lof, offset))
return -EFAULT;
/* The __user pointer cast is valid because of the set_fs() */
set_fs(KERNEL_DS);
ret = sys_sendfile64(out_fd, in_fd, offset ? &lof : NULL, count);
up = offset ? (loff_t __user *) &lof : NULL;
ret = sys_sendfile64(out_fd, in_fd, up, count);
set_fs(old_fs);
if (offset && put_user(lof, offset))
......@@ -605,7 +613,7 @@ long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2,
int error;
char * filename;
filename = getname((char *) a0);
filename = getname((char __user *) a0);
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
......@@ -675,14 +683,15 @@ asmlinkage long sys32_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec *interval)
asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
{
struct timespec t;
int ret;
mm_segment_t old_fs = get_fs ();
/* The __user pointer cast is valid because of the set_fs() */
set_fs (KERNEL_DS);
ret = sys_sched_rr_get_interval((int)pid, &t);
ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
set_fs (old_fs);
if (put_compat_timespec(&t, interval))
return -EFAULT;
......@@ -695,7 +704,7 @@ asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf
(unsigned long) dfn,
(unsigned long) off,
(unsigned long) len,
(unsigned char *)AA(ubuf));
(unsigned char __user *)AA(ubuf));
}
asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
......@@ -704,7 +713,7 @@ asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubu
(unsigned long) dfn,
(unsigned long) off,
(unsigned long) len,
(unsigned char *)AA(ubuf));
(unsigned char __user *)AA(ubuf));
}
#define IOBASE_BRIDGE_NUMBER 0
......@@ -765,7 +774,7 @@ asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
}
asmlinkage int ppc64_newuname(struct new_utsname * name)
asmlinkage int ppc64_newuname(struct new_utsname __user * name)
{
int errno = sys_newuname(name);
......@@ -795,7 +804,7 @@ asmlinkage int ppc64_personality(unsigned long personality)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_access(const char * filename, u32 mode)
asmlinkage long sys32_access(const char __user * filename, u32 mode)
{
return sys_access(filename, (int)mode);
}
......@@ -806,7 +815,7 @@ asmlinkage long sys32_access(const char * filename, u32 mode)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_creat(const char * pathname, u32 mode)
asmlinkage long sys32_creat(const char __user * pathname, u32 mode)
{
return sys_creat(pathname, (int)mode);
}
......@@ -817,7 +826,7 @@ asmlinkage long sys32_creat(const char * pathname, u32 mode)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_waitpid(u32 pid, unsigned int * stat_addr, u32 options)
asmlinkage long sys32_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
{
return sys_waitpid((int)pid, stat_addr, (int)options);
}
......@@ -828,7 +837,7 @@ asmlinkage long sys32_waitpid(u32 pid, unsigned int * stat_addr, u32 options)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t *grouplist)
asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t __user *grouplist)
{
return sys_getgroups((int)gidsetsize, grouplist);
}
......@@ -883,7 +892,7 @@ asmlinkage long sys32_kill(u32 pid, u32 sig)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_mkdir(const char * pathname, u32 mode)
asmlinkage long sys32_mkdir(const char __user * pathname, u32 mode)
{
return sys_mkdir(pathname, (int)mode);
}
......@@ -904,7 +913,7 @@ off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
* This is just a version for 32-bit applications which does
* not force O_LARGEFILE on.
*/
long sys32_open(const char * filename, int flags, int mode)
asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
{
char * tmp;
int fd, error;
......@@ -936,7 +945,7 @@ long sys32_open(const char * filename, int flags, int mode)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_readlink(const char * path, char * buf, u32 bufsiz)
asmlinkage long sys32_readlink(const char __user * path, char __user * buf, u32 bufsiz)
{
return sys_readlink(path, buf, (int)bufsiz);
}
......@@ -968,7 +977,7 @@ asmlinkage long sys32_sched_get_priority_min(u32 policy)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param *param)
asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param __user *param)
{
return sys_sched_getparam((int)pid, param);
}
......@@ -990,7 +999,7 @@ asmlinkage long sys32_sched_getscheduler(u32 pid)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param *param)
asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param __user *param)
{
return sys_sched_setparam((int)pid, param);
}
......@@ -1001,7 +1010,7 @@ asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param *param)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param *param)
asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
{
return sys_sched_setscheduler((int)pid, (int)policy, param);
}
......@@ -1012,7 +1021,7 @@ asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_setdomainname(char *name, u32 len)
asmlinkage long sys32_setdomainname(char __user *name, u32 len)
{
return sys_setdomainname(name, (int)len);
}
......@@ -1023,13 +1032,13 @@ asmlinkage long sys32_setdomainname(char *name, u32 len)
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
* and the register representation of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t *grouplist)
asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t __user *grouplist)
{
return sys_setgroups((int)gidsetsize, grouplist);
}
asmlinkage long sys32_sethostname(char *name, u32 len)
asmlinkage long sys32_sethostname(char __user *name, u32 len)
{
/* sign extend len */
return sys_sethostname(name, (int)len);
......@@ -1063,7 +1072,7 @@ asmlinkage long sys32_ssetmask(u32 newmask)
return sys_ssetmask((int) newmask);
}
long sys32_syslog(u32 type, char * buf, u32 len)
asmlinkage long sys32_syslog(u32 type, char __user * buf, u32 len)
{
/* sign extend len */
return sys_syslog(type, buf, (int)len);
......@@ -1090,11 +1099,12 @@ struct __sysctl_args32 {
u32 __unused[4];
};
extern asmlinkage long sys32_sysctl(struct __sysctl_args32 *args)
extern asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
{
struct __sysctl_args32 tmp;
int error;
size_t oldlen, *oldlenp = NULL;
size_t oldlen;
size_t __user *oldlenp = NULL;
unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
if (copy_from_user(&tmp, args, sizeof(tmp)))
......@@ -1107,20 +1117,20 @@ extern asmlinkage long sys32_sysctl(struct __sysctl_args32 *args)
basically copy the whole sysctl.c here, and
glibc's __sysctl uses rw memory for the structure
anyway. */
oldlenp = (size_t __user *)addr;
if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
put_user(oldlen, (size_t *)addr))
put_user(oldlen, oldlenp))
return -EFAULT;
oldlenp = (size_t *)addr;
}
lock_kernel();
error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval),
oldlenp, (void *)A(tmp.newval), tmp.newlen);
error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
unlock_kernel();
if (oldlenp) {
if (!error) {
if (get_user(oldlen, (size_t *)addr) ||
put_user(oldlen, (u32 *)A(tmp.oldlenp)))
if (get_user(oldlen, oldlenp) ||
put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
error = -EFAULT;
}
copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
......@@ -1128,7 +1138,7 @@ extern asmlinkage long sys32_sysctl(struct __sysctl_args32 *args)
return error;
}
asmlinkage long sys32_time(compat_time_t* tloc)
asmlinkage long sys32_time(compat_time_t __user * tloc)
{
compat_time_t secs;
......@@ -1145,7 +1155,7 @@ asmlinkage long sys32_time(compat_time_t* tloc)
return secs;
}
int sys32_olduname(struct oldold_utsname * name)
asmlinkage int sys32_olduname(struct oldold_utsname __user * name)
{
int error;
......@@ -1180,37 +1190,26 @@ unsigned long sys32_mmap2(unsigned long addr, size_t len,
return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
}
int get_compat_timeval(struct timeval *tv, struct compat_timeval *ctv)
int get_compat_timeval(struct timeval *tv, struct compat_timeval __user *ctv)
{
return (verify_area(VERIFY_READ, ctv, sizeof(*ctv)) ||
__get_user(tv->tv_sec, &ctv->tv_sec) ||
__get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
}
long sys32_utimes(char *filename, struct compat_timeval *tvs)
asmlinkage long sys32_utimes(char __user *filename, struct compat_timeval __user *tvs)
{
char *kfilename;
struct timeval ktvs[2];
mm_segment_t old_fs;
long ret;
struct timeval ktvs[2], *ptr;
kfilename = getname(filename);
ret = PTR_ERR(kfilename);
if (!IS_ERR(kfilename)) {
ptr = NULL;
if (tvs) {
if (get_compat_timeval(&ktvs[0], &tvs[0]) ||
get_compat_timeval(&ktvs[1], &tvs[1]))
return -EFAULT;
ptr = ktvs;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = do_utimes(kfilename, (tvs ? &ktvs[0] : NULL));
set_fs(old_fs);
putname(kfilename);
}
return ret;
return do_utimes(filename, ptr);
}
long sys32_tgkill(u32 tgid, u32 pid, int sig)
......@@ -1224,13 +1223,13 @@ long sys32_tgkill(u32 tgid, u32 pid, int sig)
* The 32 bit ABI passes long longs in an odd even register pair.
*/
compat_ssize_t sys32_pread64(unsigned int fd, char *ubuf, compat_size_t count,
compat_ssize_t sys32_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
u32 reg6, u32 poshi, u32 poslo)
{
return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
}
compat_ssize_t sys32_pwrite64(unsigned int fd, char *ubuf, compat_size_t count,
compat_ssize_t sys32_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
u32 reg6, u32 poshi, u32 poslo)
{
return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
......@@ -1241,7 +1240,7 @@ compat_ssize_t sys32_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
}
asmlinkage int sys32_truncate64(const char * path, u32 reg4,
asmlinkage int sys32_truncate64(const char __user * path, u32 reg4,
unsigned long high, unsigned long low)
{
return sys_truncate(path, (high << 32) | low);
......@@ -1253,7 +1252,7 @@ asmlinkage int sys32_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
return sys_ftruncate(fd, (high << 32) | low);
}
long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char *buf,
long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
size_t len)
{
return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
......@@ -1274,7 +1273,7 @@ long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
(u64)len_high << 32 | len_low, advice);
}
extern long sys_timer_create(clockid_t, sigevent_t *, timer_t *);
extern asmlinkage long sys_timer_create(clockid_t, sigevent_t __user *, timer_t __user *);
long ppc32_timer_create(clockid_t clock,
struct compat_sigevent __user *ev32,
......@@ -1303,7 +1302,10 @@ long ppc32_timer_create(clockid_t clock,
savefs = get_fs();
set_fs(KERNEL_DS);
err = sys_timer_create(clock, &event, &t);
/* The __user pointer casts are valid due to the set_fs() */
err = sys_timer_create(clock,
(sigevent_t __user *) &event,
(timer_t __user *) &t);
set_fs(savefs);
if (err == 0)
......
include/asm-ppc64/compat.h
View file @ 9c101b04
......@@ -117,12 +117,12 @@ typedef u32 compat_sigset_word;
*/
typedef u32 compat_uptr_t;
static inline void *compat_ptr(compat_uptr_t uptr)
static inline void __user *compat_ptr(compat_uptr_t uptr)
{
return (void *)(unsigned long)uptr;
return (void __user *)(unsigned long)uptr;
}
static inline void *compat_alloc_user_space(long len)
static inline void __user *compat_alloc_user_space(long len)
{
struct pt_regs *regs = current->thread.regs;
unsigned long usp = regs->gpr[1];
......@@ -134,7 +134,7 @@ static inline void *compat_alloc_user_space(long len)
if (!(test_thread_flag(TIF_32BIT)))
usp -= 288;
return (void *) (usp - len);
return (void __user *) (usp - len);
}
/*
......
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