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Subject[PATCH] Consolidate compat_sys_waitid
Hi all,

This patch does:
- consolidate the three implementations of compat_sys_waitid
(some were called sys32_waitid).
- adds sys_waitid syscall to ppc
- adds sys_waitid and compat_sys_waitid syscalls to ppc64

Parisc seemed to assume th existance of compat_sys_waitid. The MIPS
syscall tables have me confused and may need updating. I have arbitrarily
chosen the next available syscall number on ppc and ppc64, I hope this is
correct.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Comments?

--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

diff -ruNp linus-bk/arch/ia64/ia32/ia32_entry.S linus-bk-waitid.1/arch/ia64/ia32/ia32_entry.S
--- linus-bk/arch/ia64/ia32/ia32_entry.S 2005-01-16 07:07:51.000000000 +1100
+++ linus-bk-waitid.1/arch/ia64/ia32/ia32_entry.S 2005-02-15 12:12:21.000000000 +1100
@@ -494,7 +494,7 @@ ia32_syscall_table:
data8 compat_sys_mq_notify
data8 compat_sys_mq_getsetattr
data8 sys_ni_syscall /* reserved for kexec */
- data8 sys32_waitid
+ data8 compat_sys_waitid

// guard against failures to increase IA32_NR_syscalls
.org ia32_syscall_table + 8*IA32_NR_syscalls
diff -ruNp linus-bk/arch/ia64/ia32/sys_ia32.c linus-bk-waitid.1/arch/ia64/ia32/sys_ia32.c
--- linus-bk/arch/ia64/ia32/sys_ia32.c 2005-02-11 13:05:29.000000000 +1100
+++ linus-bk-waitid.1/arch/ia64/ia32/sys_ia32.c 2005-02-15 12:16:35.000000000 +1100
@@ -2633,32 +2633,6 @@ long sys32_fadvise64_64(int fd, __u32 of
advice);
}

-asmlinkage long sys32_waitid(int which, compat_pid_t pid,
- compat_siginfo_t __user *uinfo, int options,
- struct compat_rusage __user *uru)
-{
- siginfo_t info;
- struct rusage ru;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- info.si_signo = 0;
- set_fs (KERNEL_DS);
- ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
- uru ? (struct rusage __user *) &ru : NULL);
- set_fs (old_fs);
-
- if (ret < 0 || info.si_signo == 0)
- return ret;
-
- if (uru && (ret = put_compat_rusage(&ru, uru)))
- return ret;
-
- BUG_ON(info.si_code & __SI_MASK);
- info.si_code |= __SI_CHLD;
- return copy_siginfo_to_user32(uinfo, &info);
-}
-
#ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */

asmlinkage long sys32_setreuid(compat_uid_t ruid, compat_uid_t euid)
diff -ruNp linus-bk/arch/ppc/kernel/misc.S linus-bk-waitid.1/arch/ppc/kernel/misc.S
--- linus-bk/arch/ppc/kernel/misc.S 2005-01-04 17:05:28.000000000 +1100
+++ linus-bk-waitid.1/arch/ppc/kernel/misc.S 2005-02-15 13:12:01.000000000 +1100
@@ -1450,3 +1450,4 @@ _GLOBAL(sys_call_table)
.long sys_add_key
.long sys_request_key /* 270 */
.long sys_keyctl
+ .long sys_waitid
diff -ruNp linus-bk/arch/ppc64/kernel/misc.S linus-bk-waitid.1/arch/ppc64/kernel/misc.S
--- linus-bk/arch/ppc64/kernel/misc.S 2005-01-16 07:07:51.000000000 +1100
+++ linus-bk-waitid.1/arch/ppc64/kernel/misc.S 2005-02-15 13:13:51.000000000 +1100
@@ -939,6 +939,7 @@ _GLOBAL(sys_call_table32)
.llong .sys32_add_key
.llong .sys32_request_key
.llong .compat_sys_keyctl
+ .llong .compat_sys_waitid

.balign 8
_GLOBAL(sys_call_table)
@@ -1214,3 +1215,4 @@ _GLOBAL(sys_call_table)
.llong .sys_add_key
.llong .sys_request_key /* 270 */
.llong .sys_keyctl
+ .llong .sys_waitid
diff -ruNp linus-bk/arch/sparc64/kernel/sys_sparc32.c linus-bk-waitid.1/arch/sparc64/kernel/sys_sparc32.c
--- linus-bk/arch/sparc64/kernel/sys_sparc32.c 2005-02-11 13:05:29.000000000 +1100
+++ linus-bk-waitid.1/arch/sparc64/kernel/sys_sparc32.c 2005-02-15 12:01:55.000000000 +1100
@@ -1653,34 +1653,3 @@ sys32_timer_create(u32 clock, struct sig

return err;
}
-
-asmlinkage long compat_sys_waitid(u32 which, u32 pid,
- struct compat_siginfo __user *uinfo,
- u32 options, struct compat_rusage __user *uru)
-{
- siginfo_t info;
- struct rusage ru;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- memset(&info, 0, sizeof(info));
-
- set_fs (KERNEL_DS);
- ret = sys_waitid(which, pid, (siginfo_t __user *) &info,
- options,
- uru ? (struct rusage __user *) &ru : NULL);
- set_fs (old_fs);
-
- if (ret < 0 || info.si_signo == 0)
- return ret;
-
- if (uru) {
- ret = put_compat_rusage(&ru, uru);
- if (ret)
- return ret;
- }
-
- BUG_ON(info.si_code & __SI_MASK);
- info.si_code |= __SI_CHLD;
- return copy_siginfo_to_user32(uinfo, &info);
-}
diff -ruNp linus-bk/arch/x86_64/ia32/ia32entry.S linus-bk-waitid.1/arch/x86_64/ia32/ia32entry.S
--- linus-bk/arch/x86_64/ia32/ia32entry.S 2005-01-16 11:05:29.000000000 +1100
+++ linus-bk-waitid.1/arch/x86_64/ia32/ia32entry.S 2005-02-15 12:11:52.000000000 +1100
@@ -590,7 +590,7 @@ ia32_sys_call_table:
.quad compat_sys_mq_notify
.quad compat_sys_mq_getsetattr
.quad quiet_ni_syscall /* reserved for kexec */
- .quad sys32_waitid
+ .quad compat_sys_waitid
.quad quiet_ni_syscall /* sys_altroot */
.quad sys_add_key
.quad sys_request_key
diff -ruNp linus-bk/arch/x86_64/ia32/sys_ia32.c linus-bk-waitid.1/arch/x86_64/ia32/sys_ia32.c
--- linus-bk/arch/x86_64/ia32/sys_ia32.c 2005-02-04 04:10:36.000000000 +1100
+++ linus-bk-waitid.1/arch/x86_64/ia32/sys_ia32.c 2005-02-15 12:17:04.000000000 +1100
@@ -955,32 +955,6 @@ asmlinkage long sys32_clone(unsigned int
return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
}

-asmlinkage long sys32_waitid(int which, compat_pid_t pid,
- compat_siginfo_t __user *uinfo, int options,
- struct compat_rusage __user *uru)
-{
- siginfo_t info;
- struct rusage ru;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- info.si_signo = 0;
- set_fs (KERNEL_DS);
- ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
- uru ? &ru : NULL);
- set_fs (old_fs);
-
- if (ret < 0 || info.si_signo == 0)
- return ret;
-
- if (uru && (ret = put_compat_rusage(&ru, uru)))
- return ret;
-
- BUG_ON(info.si_code & __SI_MASK);
- info.si_code |= __SI_CHLD;
- return copy_siginfo_to_user32(uinfo, &info);
-}
-
/*
* Some system calls that need sign extended arguments. This could be done by a generic wrapper.
*/
diff -ruNp linus-bk/include/asm-ppc/unistd.h linus-bk-waitid.1/include/asm-ppc/unistd.h
--- linus-bk/include/asm-ppc/unistd.h 2005-01-04 17:05:28.000000000 +1100
+++ linus-bk-waitid.1/include/asm-ppc/unistd.h 2005-02-15 13:08:22.000000000 +1100
@@ -276,8 +276,9 @@
#define __NR_add_key 269
#define __NR_request_key 270
#define __NR_keyctl 271
+#define __NR_waitid 272

-#define __NR_syscalls 272
+#define __NR_syscalls 273

#define __NR(n) #n

diff -ruNp linus-bk/include/asm-ppc64/unistd.h linus-bk-waitid.1/include/asm-ppc64/unistd.h
--- linus-bk/include/asm-ppc64/unistd.h 2005-01-05 17:06:08.000000000 +1100
+++ linus-bk-waitid.1/include/asm-ppc64/unistd.h 2005-02-15 13:07:33.000000000 +1100
@@ -282,8 +282,9 @@
#define __NR_add_key 269
#define __NR_request_key 270
#define __NR_keyctl 271
+#define __NR_waitid 272

-#define __NR_syscalls 272
+#define __NR_syscalls 273
#ifdef __KERNEL__
#define NR_syscalls __NR_syscalls
#endif
diff -ruNp linus-bk/include/linux/compat.h linus-bk-waitid.1/include/linux/compat.h
--- linus-bk/include/linux/compat.h 2005-01-05 17:06:08.000000000 +1100
+++ linus-bk-waitid.1/include/linux/compat.h 2005-02-15 13:22:13.000000000 +1100
@@ -81,6 +81,12 @@ struct compat_rusage {

extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);

+struct compat_siginfo;
+
+extern asmlinkage long compat_sys_waitid(u32, u32,
+ struct compat_siginfo __user *, u32,
+ struct compat_rusage __user *);
+
struct compat_dirent {
u32 d_ino;
compat_off_t d_off;
@@ -143,7 +149,6 @@ long compat_get_bitmap(unsigned long *ma
unsigned long bitmap_size);
long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
unsigned long bitmap_size);
-struct compat_siginfo;
int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
#endif /* CONFIG_COMPAT */
diff -ruNp linus-bk/kernel/compat.c linus-bk-waitid.1/kernel/compat.c
--- linus-bk/kernel/compat.c 2005-01-16 07:07:51.000000000 +1100
+++ linus-bk-waitid.1/kernel/compat.c 2005-02-15 12:09:46.000000000 +1100
@@ -23,6 +23,7 @@
#include <linux/security.h>

#include <asm/uaccess.h>
+#include <asm/bug.h>

int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
{
@@ -413,6 +414,36 @@ compat_sys_wait4(compat_pid_t pid, compa
}
}

+asmlinkage long compat_sys_waitid(u32 which, u32 pid,
+ struct compat_siginfo __user *uinfo, u32 options,
+ struct compat_rusage __user *uru)
+{
+ siginfo_t info;
+ struct rusage ru;
+ long ret;
+ mm_segment_t old_fs = get_fs();
+
+ memset(&info, 0, sizeof(info));
+
+ set_fs(KERNEL_DS);
+ ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
+ uru ? (struct rusage __user *)&ru : NULL);
+ set_fs(old_fs);
+
+ if ((ret < 0) || (info.si_signo == 0))
+ return ret;
+
+ if (uru) {
+ ret = put_compat_rusage(&ru, uru);
+ if (ret)
+ return ret;
+ }
+
+ BUG_ON(info.si_code & __SI_MASK);
+ info.si_code |= __SI_CHLD;
+ return copy_siginfo_to_user32(uinfo, &info);
+}
+
static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
unsigned len, cpumask_t *new_mask)
{
-
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