initial_commit

1 files changed, 625 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
new file mode 100644
index 00000000..4e5bf1ed
--- /dev/null
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -0,0 +1,625 @@
+/*
+ * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
+ *
+ * Copyright (C) 2001 IBM
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment.
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h> 
+#include <linux/mm.h> 
+#include <linux/file.h> 
+#include <linux/signal.h>
+#include <linux/resource.h>
+#include <linux/times.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/in.h>
+#include <linux/syscalls.h>
+#include <linux/unistd.h>
+#include <linux/sysctl.h>
+#include <linux/binfmts.h>
+#include <linux/security.h>
+#include <linux/compat.h>
+#include <linux/ptrace.h>
+#include <linux/elf.h>
+#include <linux/ipc.h>
+#include <linux/slab.h>
+
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+#include <asm/time.h>
+#include <asm/mmu_context.h>
+#include <asm/ppc-pci.h>
+#include <asm/syscalls.h>
+
+
+asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
+		compat_ulong_t __user *outp, compat_ulong_t __user *exp,
+		compat_uptr_t tvp_x)
+{
+	/* sign extend n */
+	return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
+}
+
+/* Note: it is necessary to treat option as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
+{
+	return sys_sysfs((int)option, arg1, arg2);
+}
+
+#ifdef CONFIG_SYSVIPC
+long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
+	       u32 fifth)
+{
+	int version;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	switch (call) {
+
+	case SEMTIMEDOP:
+		if (fifth)
+			/* sign extend semid */
+			return compat_sys_semtimedop((int)first,
+						     compat_ptr(ptr), second,
+						     compat_ptr(fifth));
+		/* else fall through for normal semop() */
+	case SEMOP:
+		/* struct sembuf is the same on 32 and 64bit :)) */
+		/* sign extend semid */
+		return sys_semtimedop((int)first, compat_ptr(ptr), second,
+				      NULL);
+	case SEMGET:
+		/* sign extend key, nsems */
+		return sys_semget((int)first, (int)second, third);
+	case SEMCTL:
+		/* sign extend semid, semnum */
+		return compat_sys_semctl((int)first, (int)second, third,
+					 compat_ptr(ptr));
+
+	case MSGSND:
+		/* sign extend msqid */
+		return compat_sys_msgsnd((int)first, (int)second, third,
+					 compat_ptr(ptr));
+	case MSGRCV:
+		/* sign extend msqid, msgtyp */
+		return compat_sys_msgrcv((int)first, second, (int)fifth,
+					 third, version, compat_ptr(ptr));
+	case MSGGET:
+		/* sign extend key */
+		return sys_msgget((int)first, second);
+	case MSGCTL:
+		/* sign extend msqid */
+		return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
+
+	case SHMAT:
+		/* sign extend shmid */
+		return compat_sys_shmat((int)first, second, third, version,
+					compat_ptr(ptr));
+	case SHMDT:
+		return sys_shmdt(compat_ptr(ptr));
+	case SHMGET:
+		/* sign extend key_t */
+		return sys_shmget((int)first, second, third);
+	case SHMCTL:
+		/* sign extend shmid */
+		return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
+
+	default:
+		return -ENOSYS;
+	}
+
+	return -ENOSYS;
+}
+#endif
+
+/* Note: it is necessary to treat out_fd and in_fd as unsigned ints, 
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_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);
+	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))
+		return -EFAULT;
+		
+	return ret;
+}
+
+asmlinkage int compat_sys_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);
+	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))
+		return -EFAULT;
+		
+	return ret;
+}
+
+long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
+		  unsigned long a3, unsigned long a4, unsigned long a5,
+		  struct pt_regs *regs)
+{
+	int error;
+	char * filename;
+	
+	filename = getname((char __user *) a0);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+	flush_fp_to_thread(current);
+	flush_altivec_to_thread(current);
+
+	error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
+
+	putname(filename);
+
+out:
+	return error;
+}
+
+/* Note: it is necessary to treat option as an unsigned int, 
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
+{
+	return sys_prctl((int)option,
+			 (unsigned long) arg2,
+			 (unsigned long) arg3,
+			 (unsigned long) arg4,
+			 (unsigned long) arg5);
+}
+
+/* Note: it is necessary to treat pid as an unsigned int, 
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_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, (struct timespec __user *) &t);
+	set_fs (old_fs);
+	if (put_compat_timespec(&t, interval))
+		return -EFAULT;
+	return ret;
+}
+
+/* Note: it is necessary to treat mode as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_access(const char __user * filename, u32 mode)
+{
+	return sys_access(filename, (int)mode);
+}
+
+
+/* Note: it is necessary to treat mode as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_creat(const char __user * pathname, u32 mode)
+{
+	return sys_creat(pathname, (int)mode);
+}
+
+
+/* Note: it is necessary to treat pid and options as unsigned ints,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
+{
+	return sys_waitpid((int)pid, stat_addr, (int)options);
+}
+
+
+/* Note: it is necessary to treat gidsetsize as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
+{
+	return sys_getgroups((int)gidsetsize, grouplist);
+}
+
+
+/* Note: it is necessary to treat pid as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_getpgid(u32 pid)
+{
+	return sys_getpgid((int)pid);
+}
+
+
+
+/* Note: it is necessary to treat pid as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_getsid(u32 pid)
+{
+	return sys_getsid((int)pid);
+}
+
+
+/* Note: it is necessary to treat pid and sig as unsigned ints,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_kill(u32 pid, u32 sig)
+{
+	return sys_kill((int)pid, (int)sig);
+}
+
+
+/* Note: it is necessary to treat mode as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_mkdir(const char __user * pathname, u32 mode)
+{
+	return sys_mkdir(pathname, (int)mode);
+}
+
+long compat_sys_nice(u32 increment)
+{
+	/* sign extend increment */
+	return sys_nice((int)increment);
+}
+
+off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
+{
+	/* sign extend n */
+	return sys_lseek(fd, (int)offset, origin);
+}
+
+long compat_sys_truncate(const char __user * path, u32 length)
+{
+	/* sign extend length */
+	return sys_truncate(path, (int)length);
+}
+
+long compat_sys_ftruncate(int fd, u32 length)
+{
+	/* sign extend length */
+	return sys_ftruncate(fd, (int)length);
+}
+
+/* Note: it is necessary to treat bufsiz as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
+{
+	return sys_readlink(path, buf, (int)bufsiz);
+}
+
+/* Note: it is necessary to treat option as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_get_priority_max(u32 policy)
+{
+	return sys_sched_get_priority_max((int)policy);
+}
+
+
+/* Note: it is necessary to treat policy as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_get_priority_min(u32 policy)
+{
+	return sys_sched_get_priority_min((int)policy);
+}
+
+
+/* Note: it is necessary to treat pid as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
+{
+	return sys_sched_getparam((int)pid, param);
+}
+
+
+/* Note: it is necessary to treat pid as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_getscheduler(u32 pid)
+{
+	return sys_sched_getscheduler((int)pid);
+}
+
+
+/* Note: it is necessary to treat pid as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
+{
+	return sys_sched_setparam((int)pid, param);
+}
+
+
+/* Note: it is necessary to treat pid and policy as unsigned ints,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
+{
+	return sys_sched_setscheduler((int)pid, (int)policy, param);
+}
+
+
+/* Note: it is necessary to treat len as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_setdomainname(char __user *name, u32 len)
+{
+	return sys_setdomainname(name, (int)len);
+}
+
+
+/* Note: it is necessary to treat gidsetsize as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
+{
+	return sys_setgroups((int)gidsetsize, grouplist);
+}
+
+
+asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
+{
+	/* sign extend len */
+	return sys_sethostname(name, (int)len);
+}
+
+
+/* Note: it is necessary to treat pid and pgid as unsigned ints,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_setpgid(u32 pid, u32 pgid)
+{
+	return sys_setpgid((int)pid, (int)pgid);
+}
+
+long compat_sys_getpriority(u32 which, u32 who)
+{
+	/* sign extend which and who */
+	return sys_getpriority((int)which, (int)who);
+}
+
+long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
+{
+	/* sign extend which, who and niceval */
+	return sys_setpriority((int)which, (int)who, (int)niceval);
+}
+
+long compat_sys_ioprio_get(u32 which, u32 who)
+{
+	/* sign extend which and who */
+	return sys_ioprio_get((int)which, (int)who);
+}
+
+long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
+{
+	/* sign extend which, who and ioprio */
+	return sys_ioprio_set((int)which, (int)who, (int)ioprio);
+}
+
+/* Note: it is necessary to treat newmask as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_ssetmask(u32 newmask)
+{
+	return sys_ssetmask((int) newmask);
+}
+
+asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
+{
+	/* sign extend len */
+	return sys_syslog(type, buf, (int)len);
+}
+
+
+/* Note: it is necessary to treat mask as an unsigned int,
+ * with the corresponding cast to a signed int to insure that the 
+ * 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 compat_sys_umask(u32 mask)
+{
+	return sys_umask((int)mask);
+}
+
+unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
+			  unsigned long prot, unsigned long flags,
+			  unsigned long fd, unsigned long pgoff)
+{
+	/* This should remain 12 even if PAGE_SIZE changes */
+	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
+}
+
+long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
+{
+	/* sign extend tgid, pid */
+	return sys_tgkill((int)tgid, (int)pid, sig);
+}
+
+/* 
+ * long long munging:
+ * The 32 bit ABI passes long longs in an odd even register pair.
+ */
+
+compat_ssize_t compat_sys_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 compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
+			      u32 reg6, u32 poshi, u32 poslo)
+{
+	return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
+}
+
+compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
+{
+	return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
+}
+
+asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
+				unsigned long high, unsigned long low)
+{
+	return sys_truncate(path, (high << 32) | low);
+}
+
+asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
+				     u32 lenhi, u32 lenlo)
+{
+	return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
+			     ((loff_t)lenhi << 32) | lenlo);
+}
+
+asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
+				 unsigned long low)
+{
+	return sys_ftruncate(fd, (high << 32) | low);
+}
+
+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,
+				  buf, len);
+}
+
+long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
+		     size_t len, int advice)
+{
+	return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
+			     advice);
+}
+
+asmlinkage long compat_sys_add_key(const char __user *_type,
+			      const char __user *_description,
+			      const void __user *_payload,
+			      u32 plen,
+			      u32 ringid)
+{
+	return sys_add_key(_type, _description, _payload, plen, ringid);
+}
+
+asmlinkage long compat_sys_request_key(const char __user *_type,
+				  const char __user *_description,
+				  const char __user *_callout_info,
+				  u32 destringid)
+{
+	return sys_request_key(_type, _description, _callout_info, destringid);
+}
+
+asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
+				   unsigned offset_hi, unsigned offset_lo,
+				   unsigned nbytes_hi, unsigned nbytes_lo)
+{
+	loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
+	loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
+
+	return sys_sync_file_range(fd, offset, nbytes, flags);
+}
+
+asmlinkage long compat_sys_fanotify_mark(int fanotify_fd, unsigned int flags,
+					 unsigned mask_hi, unsigned mask_lo,
+					 int dfd, const char __user *pathname)
+{
+	u64 mask = ((u64)mask_hi << 32) | mask_lo;
+	return sys_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);
+}