[PATCH] create struct compat_timex and use it everywhere

We had a copy of the compatibility version of struct timex in each 64 bit
architecture.  This patch just creates a global one and replaces all the
usages of the old ones.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ia64/ia32/sys_ia32.c

@@ -2594,23 +2594,10 @@ sys32_setresgid(compat_gid_t rgid, compat_gid_t egid,
 
 /* Handle adjtimex compatibility. */
 
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
 asmlinkage long
-sys32_adjtimex(struct timex32 *utp)
+sys32_adjtimex(struct compat_timex *utp)
 {
 	struct timex txc;
 	int ret;

arch/mips/kernel/linux32.c

@@ -1159,22 +1159,9 @@ out:
 
 /* Handle adjtimex compatibility. */
 
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
-asmlinkage int sys32_adjtimex(struct timex32 __user *utp)
+asmlinkage int sys32_adjtimex(struct compat_timex __user *utp)
 {
 	struct timex txc;
 	int ret;

arch/parisc/kernel/sys_parisc32.c

@@ -567,43 +567,14 @@ asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *off
 }
 
 
-struct timex32 {
-	unsigned int modes;	/* mode selector */
-	int offset;		/* time offset (usec) */
-	int freq;		/* frequency offset (scaled ppm) */
-	int maxerror;		/* maximum error (usec) */
-	int esterror;		/* estimated error (usec) */
-	int status;		/* clock command/status */
-	int constant;		/* pll time constant */
-	int precision;		/* clock precision (usec) (read only) */
-	int tolerance;		/* clock frequency tolerance (ppm)
-				 * (read only)
-				 */
-	struct compat_timeval time;	/* (read only) */
-	int tick;		/* (modified) usecs between clock ticks */
-
-	int ppsfreq;           /* pps frequency (scaled ppm) (ro) */
-	int jitter;            /* pps jitter (us) (ro) */
-	int shift;              /* interval duration (s) (shift) (ro) */
-	int stabil;            /* pps stability (scaled ppm) (ro) */
-	int jitcnt;            /* jitter limit exceeded (ro) */
-	int calcnt;            /* calibration intervals (ro) */
-	int errcnt;            /* calibration errors (ro) */
-	int stbcnt;            /* stability limit exceeded (ro) */
-
-	int  :32; int  :32; int  :32; int  :32;
-	int  :32; int  :32; int  :32; int  :32;
-	int  :32; int  :32; int  :32; int  :32;
-};
-
-asmlinkage long sys32_adjtimex(struct timex32 __user *txc_p32)
+asmlinkage long sys32_adjtimex(struct compat_timex __user *txc_p32)
 {
 	struct timex txc;
-	struct timex32 t32;
+	struct compat_timex t32;
 	int ret;
 	extern int do_adjtimex(struct timex *txc);
 
-	if(copy_from_user(&t32, txc_p32, sizeof(struct timex32)))
+	if(copy_from_user(&t32, txc_p32, sizeof(struct compat_timex)))
 		return -EFAULT;
 #undef CP
 #define CP(x) txc.x = t32.x
@@ -620,7 +591,7 @@ asmlinkage long sys32_adjtimex(struct timex32 __user *txc_p32)
 	CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
 	CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
 	CP(stbcnt);
-	return copy_to_user(txc_p32, &t32, sizeof(struct timex32)) ? -EFAULT : ret;
+	return copy_to_user(txc_p32, &t32, sizeof(struct compat_timex)) ? -EFAULT : ret;
 }
 
 

arch/powerpc/kernel/sys_ppc32.c

@@ -162,22 +162,9 @@ asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
 }
 
 /* Handle adjtimex compatibility. */
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
-asmlinkage long compat_sys_adjtimex(struct timex32 __user *utp)
+asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
 {
 	struct timex txc;
 	int ret;

arch/s390/kernel/compat_linux.c

@@ -707,22 +707,9 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
 
 /* Handle adjtimex compatibility. */
 
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
-asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
+asmlinkage long sys32_adjtimex(struct compat_timex __user *utp)
 {
 	struct timex txc;
 	int ret;

arch/sparc64/kernel/sys_sparc32.c

@@ -947,22 +947,9 @@ asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
 
 /* Handle adjtimex compatibility. */
 
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
-asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
+asmlinkage long sys32_adjtimex(struct compat_timex __user *utp)
 {
 	struct timex txc;
 	int ret;

arch/x86_64/ia32/sys_ia32.c

@@ -769,30 +769,17 @@ sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
 
 /* Handle adjtimex compatibility. */
 
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
 extern int do_adjtimex(struct timex *);
 
 asmlinkage long
-sys32_adjtimex(struct timex32 __user *utp)
+sys32_adjtimex(struct compat_timex __user *utp)
 {
 	struct timex txc;
 	int ret;
 
 	memset(&txc, 0, sizeof(struct timex));
 
-	if (!access_ok(VERIFY_READ, utp, sizeof(struct timex32)) ||
+	if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
 	   __get_user(txc.modes, &utp->modes) ||
 	   __get_user(txc.offset, &utp->offset) ||
 	   __get_user(txc.freq, &utp->freq) ||
@@ -817,7 +804,7 @@ sys32_adjtimex(struct timex32 __user *utp)
 
 	ret = do_adjtimex(&txc);
 
-	if (!access_ok(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
+	if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
 	   __put_user(txc.modes, &utp->modes) ||
 	   __put_user(txc.offset, &utp->offset) ||
 	   __put_user(txc.freq, &utp->freq) ||

include/linux/compat.h

@@ -45,6 +45,32 @@ struct compat_tms {
 	compat_clock_t		tms_cstime;
 };
 
+struct compat_timex {
+	compat_uint_t modes;
+	compat_long_t offset;
+	compat_long_t freq;
+	compat_long_t maxerror;
+	compat_long_t esterror;
+	compat_int_t status;
+	compat_long_t constant;
+	compat_long_t precision;
+	compat_long_t tolerance;
+	struct compat_timeval time;
+	compat_long_t tick;
+	compat_long_t ppsfreq;
+	compat_long_t jitter;
+	compat_int_t shift;
+	compat_long_t stabil;
+	compat_long_t jitcnt;
+	compat_long_t calcnt;
+	compat_long_t errcnt;
+	compat_long_t stbcnt;
+
+	compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
+	compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
+	compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32;
+};
+
 #define _COMPAT_NSIG_WORDS	(_COMPAT_NSIG / _COMPAT_NSIG_BPW)
 
 typedef struct {