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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/parisc/kernel/sys_parisc32.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/parisc/kernel/sys_parisc32.c')
-rw-r--r--arch/parisc/kernel/sys_parisc32.c238
1 files changed, 238 insertions, 0 deletions
diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c
new file mode 100644
index 00000000..dc9a6246
--- /dev/null
+++ b/arch/parisc/kernel/sys_parisc32.c
@@ -0,0 +1,238 @@
+/*
+ * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls.
+ *
+ * Copyright (C) 2000-2001 Hewlett Packard Company
+ * Copyright (C) 2000 John Marvin
+ * Copyright (C) 2001 Matthew Wilcox
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment. Based heavily on sys_ia32.c and sys_sparc32.c.
+ */
+
+#include <linux/compat.h>
+#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/time.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/uio.h>
+#include <linux/ncp_fs.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/highmem.h>
+#include <linux/highuid.h>
+#include <linux/mman.h>
+#include <linux/binfmts.h>
+#include <linux/namei.h>
+#include <linux/vfs.h>
+#include <linux/ptrace.h>
+#include <linux/swap.h>
+#include <linux/syscalls.h>
+
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/mmu_context.h>
+
+#include "sys32.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(x) printk x
+#else
+#define DBG(x)
+#endif
+
+/*
+ * sys32_execve() executes a new program.
+ */
+
+asmlinkage int sys32_execve(struct pt_regs *regs)
+{
+ int error;
+ char *filename;
+
+ DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
+ filename = getname((const char __user *) regs->gr[26]);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ goto out;
+ error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
+ compat_ptr(regs->gr[24]), regs);
+ putname(filename);
+out:
+
+ return error;
+}
+
+asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
+ int r22, int r21, int r20)
+{
+ printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
+ current->comm, current->pid, r20);
+ return -ENOSYS;
+}
+
+asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
+ struct compat_timespec __user *interval)
+{
+ struct timespec t;
+ int ret;
+
+ KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
+ if (put_compat_timespec(&t, interval))
+ return -EFAULT;
+ return ret;
+}
+
+struct msgbuf32 {
+ int mtype;
+ char mtext[1];
+};
+
+asmlinkage long sys32_msgsnd(int msqid,
+ struct msgbuf32 __user *umsgp32,
+ size_t msgsz, int msgflg)
+{
+ struct msgbuf *mb;
+ struct msgbuf32 mb32;
+ int err;
+
+ if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+
+ err = get_user(mb32.mtype, &umsgp32->mtype);
+ mb->mtype = mb32.mtype;
+ err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
+
+ if (err)
+ err = -EFAULT;
+ else
+ KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
+
+ kfree(mb);
+ return err;
+}
+
+asmlinkage long sys32_msgrcv(int msqid,
+ struct msgbuf32 __user *umsgp32,
+ size_t msgsz, long msgtyp, int msgflg)
+{
+ struct msgbuf *mb;
+ struct msgbuf32 mb32;
+ int err, len;
+
+ if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+
+ KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
+
+ if (err >= 0) {
+ len = err;
+ mb32.mtype = mb->mtype;
+ err = put_user(mb32.mtype, &umsgp32->mtype);
+ err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
+ if (err)
+ err = -EFAULT;
+ else
+ err = len;
+ }
+
+ kfree(mb);
+ return err;
+}
+
+asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
+{
+ mm_segment_t old_fs = get_fs();
+ int ret;
+ off_t of;
+
+ if (offset && get_user(of, offset))
+ return -EFAULT;
+
+ set_fs(KERNEL_DS);
+ ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
+ set_fs(old_fs);
+
+ if (offset && put_user(of, offset))
+ return -EFAULT;
+
+ return ret;
+}
+
+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;
+
+ if (offset && get_user(lof, offset))
+ return -EFAULT;
+
+ set_fs(KERNEL_DS);
+ ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
+ set_fs(old_fs);
+
+ if (offset && put_user(lof, offset))
+ return -EFAULT;
+
+ return ret;
+}
+
+
+/* lseek() needs a wrapper because 'offset' can be negative, but the top
+ * half of the argument has been zeroed by syscall.S.
+ */
+
+asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
+{
+ return sys_lseek(fd, offset, origin);
+}
+
+asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
+{
+ union semun u;
+
+ if (cmd == SETVAL) {
+ /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
+ * The int should be in the first 4, but our argument
+ * frobbing has left it in the last 4.
+ */
+ u.val = *((int *)&arg + 1);
+ return sys_semctl (semid, semnum, cmd, u);
+ }
+ return sys_semctl (semid, semnum, cmd, arg);
+}
+
+long sys32_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);
+}
+
+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 long compat_sys_fanotify_mark(int fan_fd, int flags, u32 mask_hi,
+ u32 mask_lo, int fd,
+ const char __user *pathname)
+{
+ return sys_fanotify_mark(fan_fd, flags, ((u64)mask_hi << 32) | mask_lo,
+ fd, pathname);
+}