patch-2.4.2 linux/arch/s390x/kernel/linux32.c
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- Lines: 4327
- Date:
Fri Feb 16 16:02:35 2001
- Orig file:
v2.4.1/linux/arch/s390x/kernel/linux32.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.1/linux/arch/s390x/kernel/linux32.c linux/arch/s390x/kernel/linux32.c
@@ -0,0 +1,4326 @@
+/*
+ * arch/s390x/kernel/linux32.c
+ *
+ * S390 version
+ * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ * Gerhard Tonn (ton@de.ibm.com)
+ *
+ * Conversion between 31bit and 64bit native syscalls.
+ *
+ * Heavily inspired by the 32-bit Sparc compat code which is
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ *
+ */
+
+
+#include <linux/config.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/utime.h>
+#include <linux/resource.h>
+#include <linux/times.h>
+#include <linux/utsname.h>
+#include <linux/timex.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/malloc.h>
+#include <linux/uio.h>
+#include <linux/nfs_fs.h>
+#include <linux/smb_fs.h>
+#include <linux/smb_mount.h>
+#include <linux/ncp_fs.h>
+#include <linux/quota.h>
+#include <linux/module.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/filter.h>
+#include <linux/highmem.h>
+#include <linux/highuid.h>
+#include <linux/mman.h>
+#include <linux/ipv6.h>
+#include <linux/in.h>
+#include <linux/icmpv6.h>
+#include <linux/sysctl.h>
+
+#include <asm/types.h>
+#include <asm/ipc.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+
+#include <net/scm.h>
+
+#include "linux32.h"
+
+extern asmlinkage long sys_chown(const char *, uid_t,gid_t);
+extern asmlinkage long sys_lchown(const char *, uid_t,gid_t);
+extern asmlinkage long sys_fchown(unsigned int, uid_t,gid_t);
+extern asmlinkage long sys_setregid(gid_t, gid_t);
+extern asmlinkage long sys_setgid(gid_t);
+extern asmlinkage long sys_setreuid(uid_t, uid_t);
+extern asmlinkage long sys_setuid(uid_t);
+extern asmlinkage long sys_setresuid(uid_t, uid_t, uid_t);
+extern asmlinkage long sys_setresgid(gid_t, gid_t, gid_t);
+extern asmlinkage long sys_setfsuid(uid_t);
+extern asmlinkage long sys_setfsgid(gid_t);
+
+/* For this source file, we want overflow handling. */
+
+#undef high2lowuid
+#undef high2lowgid
+#undef low2highuid
+#undef low2highgid
+#undef SET_UID16
+#undef SET_GID16
+#undef NEW_TO_OLD_UID
+#undef NEW_TO_OLD_GID
+#undef SET_OLDSTAT_UID
+#undef SET_OLDSTAT_GID
+#undef SET_STAT_UID
+#undef SET_STAT_GID
+
+#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
+#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
+#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
+#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
+#define SET_UID16(var, uid) var = high2lowuid(uid)
+#define SET_GID16(var, gid) var = high2lowgid(gid)
+#define NEW_TO_OLD_UID(uid) high2lowuid(uid)
+#define NEW_TO_OLD_GID(gid) high2lowgid(gid)
+#define SET_OLDSTAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
+#define SET_OLDSTAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
+#define SET_STAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
+#define SET_STAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
+
+asmlinkage long sys32_chown16(const char * filename, u16 user, u16 group)
+{
+ return sys_chown(filename, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_lchown16(const char * filename, u16 user, u16 group)
+{
+ return sys_lchown(filename, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
+{
+ return sys_fchown(fd, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
+{
+ return sys_setregid(low2highgid(rgid), low2highgid(egid));
+}
+
+asmlinkage long sys32_setgid16(u16 gid)
+{
+ return sys_setgid((gid_t)gid);
+}
+
+asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
+{
+ return sys_setreuid(low2highuid(ruid), low2highuid(euid));
+}
+
+asmlinkage long sys32_setuid16(u16 uid)
+{
+ return sys_setuid((uid_t)uid);
+}
+
+asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
+{
+ return sys_setresuid(low2highuid(ruid), low2highuid(euid),
+ low2highuid(suid));
+}
+
+asmlinkage long sys32_getresuid16(u16 *ruid, u16 *euid, u16 *suid)
+{
+ int retval;
+
+ if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
+ !(retval = put_user(high2lowuid(current->euid), euid)))
+ retval = put_user(high2lowuid(current->suid), suid);
+
+ return retval;
+}
+
+asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
+{
+ return sys_setresgid(low2highgid(rgid), low2highgid(egid),
+ low2highgid(sgid));
+}
+
+asmlinkage long sys32_getresgid16(u16 *rgid, u16 *egid, u16 *sgid)
+{
+ int retval;
+
+ if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
+ !(retval = put_user(high2lowgid(current->egid), egid)))
+ retval = put_user(high2lowgid(current->sgid), sgid);
+
+ return retval;
+}
+
+asmlinkage long sys32_setfsuid16(u16 uid)
+{
+ return sys_setfsuid((uid_t)uid);
+}
+
+asmlinkage long sys32_setfsgid16(u16 gid)
+{
+ return sys_setfsgid((gid_t)gid);
+}
+
+asmlinkage long sys32_getgroups16(int gidsetsize, u16 *grouplist)
+{
+ u16 groups[NGROUPS];
+ int i,j;
+
+ if (gidsetsize < 0)
+ return -EINVAL;
+ i = current->ngroups;
+ if (gidsetsize) {
+ if (i > gidsetsize)
+ return -EINVAL;
+ for(j=0;j<i;j++)
+ groups[j] = current->groups[j];
+ if (copy_to_user(grouplist, groups, sizeof(u16)*i))
+ return -EFAULT;
+ }
+ return i;
+}
+
+asmlinkage long sys32_setgroups16(int gidsetsize, u16 *grouplist)
+{
+ u16 groups[NGROUPS];
+ int i;
+
+ if (!capable(CAP_SETGID))
+ return -EPERM;
+ if ((unsigned) gidsetsize > NGROUPS)
+ return -EINVAL;
+ if (copy_from_user(groups, grouplist, gidsetsize * sizeof(u16)))
+ return -EFAULT;
+ for (i = 0 ; i < gidsetsize ; i++)
+ current->groups[i] = (gid_t)groups[i];
+ current->ngroups = gidsetsize;
+ return 0;
+}
+
+asmlinkage long sys32_getuid16(void)
+{
+ return high2lowuid(current->uid);
+}
+
+asmlinkage long sys32_geteuid16(void)
+{
+ return high2lowuid(current->euid);
+}
+
+asmlinkage long sys32_getgid16(void)
+{
+ return high2lowgid(current->gid);
+}
+
+asmlinkage long sys32_getegid16(void)
+{
+ return high2lowgid(current->egid);
+}
+
+/* 32-bit timeval and related flotsam. */
+
+struct timeval32
+{
+ int tv_sec, tv_usec;
+};
+
+struct itimerval32
+{
+ struct timeval32 it_interval;
+ struct timeval32 it_value;
+};
+
+static inline long get_tv32(struct timeval *o, struct timeval32 *i)
+{
+ return (!access_ok(VERIFY_READ, tv32, sizeof(*tv32)) ||
+ (__get_user(o->tv_sec, &i->tv_sec) |
+ __get_user(o->tv_usec, &i->tv_usec)));
+}
+
+static inline long put_tv32(struct timeval32 *o, struct timeval *i)
+{
+ return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
+ (__put_user(i->tv_sec, &o->tv_sec) |
+ __put_user(i->tv_usec, &o->tv_usec)));
+}
+
+static inline long get_it32(struct itimerval *o, struct itimerval32 *i)
+{
+ return (!access_ok(VERIFY_READ, i32, sizeof(*i32)) ||
+ (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
+ __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
+ __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
+ __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
+}
+
+static inline long put_it32(struct itimerval32 *o, struct itimerval *i)
+{
+ return (!access_ok(VERIFY_WRITE, i32, sizeof(*i32)) ||
+ (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
+ __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
+ __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
+ __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
+}
+
+struct msgbuf32 { s32 mtype; char mtext[1]; };
+
+struct ipc_perm32
+{
+ key_t key;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_uid_t32 cuid;
+ __kernel_gid_t32 cgid;
+ __kernel_mode_t32 mode;
+ unsigned short seq;
+};
+
+struct semid_ds32 {
+ struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
+ __kernel_time_t32 sem_otime; /* last semop time */
+ __kernel_time_t32 sem_ctime; /* last change time */
+ u32 sem_base; /* ptr to first semaphore in array */
+ u32 sem_pending; /* pending operations to be processed */
+ u32 sem_pending_last; /* last pending operation */
+ u32 undo; /* undo requests on this array */
+ unsigned short sem_nsems; /* no. of semaphores in array */
+};
+
+struct semid64_ds32 {
+ struct ipc64_perm sem_perm; /* this structure is the same on sparc32 and sparc64 */
+ unsigned int __pad1;
+ __kernel_time_t32 sem_otime;
+ unsigned int __pad2;
+ __kernel_time_t32 sem_ctime;
+ u32 sem_nsems;
+ u32 __unused1;
+ u32 __unused2;
+};
+
+struct msqid_ds32
+{
+ struct ipc_perm32 msg_perm;
+ u32 msg_first;
+ u32 msg_last;
+ __kernel_time_t32 msg_stime;
+ __kernel_time_t32 msg_rtime;
+ __kernel_time_t32 msg_ctime;
+ u32 wwait;
+ u32 rwait;
+ unsigned short msg_cbytes;
+ unsigned short msg_qnum;
+ unsigned short msg_qbytes;
+ __kernel_ipc_pid_t32 msg_lspid;
+ __kernel_ipc_pid_t32 msg_lrpid;
+};
+
+struct msqid64_ds32 {
+ struct ipc64_perm msg_perm;
+ unsigned int __pad1;
+ __kernel_time_t32 msg_stime;
+ unsigned int __pad2;
+ __kernel_time_t32 msg_rtime;
+ unsigned int __pad3;
+ __kernel_time_t32 msg_ctime;
+ unsigned int msg_cbytes;
+ unsigned int msg_qnum;
+ unsigned int msg_qbytes;
+ __kernel_pid_t32 msg_lspid;
+ __kernel_pid_t32 msg_lrpid;
+ unsigned int __unused1;
+ unsigned int __unused2;
+};
+
+
+struct shmid_ds32 {
+ struct ipc_perm32 shm_perm;
+ int shm_segsz;
+ __kernel_time_t32 shm_atime;
+ __kernel_time_t32 shm_dtime;
+ __kernel_time_t32 shm_ctime;
+ __kernel_ipc_pid_t32 shm_cpid;
+ __kernel_ipc_pid_t32 shm_lpid;
+ unsigned short shm_nattch;
+};
+
+struct shmid64_ds32 {
+ struct ipc64_perm shm_perm;
+ unsigned int __pad1;
+ __kernel_time_t32 shm_atime;
+ unsigned int __pad2;
+ __kernel_time_t32 shm_dtime;
+ unsigned int __pad3;
+ __kernel_time_t32 shm_ctime;
+ __kernel_size_t32 shm_segsz;
+ __kernel_pid_t32 shm_cpid;
+ __kernel_pid_t32 shm_lpid;
+ unsigned int shm_nattch;
+ unsigned int __unused1;
+ unsigned int __unused2;
+};
+
+
+/*
+ * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
+ *
+ * This is really horribly ugly.
+ */
+#define IPCOP_MASK(__x) (1UL << (__x))
+static int do_sys32_semctl(int first, int second, int third, void *uptr)
+{
+ union semun fourth;
+ u32 pad;
+ int err = -EINVAL;
+
+ if (!uptr)
+ goto out;
+ err = -EFAULT;
+ if (get_user (pad, (u32 *)uptr))
+ goto out;
+ if(third == SETVAL)
+ fourth.val = (int)pad;
+ else
+ fourth.__pad = (void *)A(pad);
+ if (IPCOP_MASK (third) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SEM_INFO) | IPCOP_MASK (GETVAL) |
+ IPCOP_MASK (GETPID) | IPCOP_MASK (GETNCNT) | IPCOP_MASK (GETZCNT) |
+ IPCOP_MASK (GETALL) | IPCOP_MASK (SETALL) | IPCOP_MASK (IPC_RMID))) {
+ err = sys_semctl (first, second, third, fourth);
+ } else if (third & IPC_64) {
+ struct semid64_ds s;
+ struct semid64_ds32 *usp = (struct semid64_ds32 *)A(pad);
+ mm_segment_t old_fs;
+ int need_back_translation;
+
+ if (third == (IPC_SET|IPC_64)) {
+ err = get_user (s.sem_perm.uid, &usp->sem_perm.uid);
+ err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid);
+ err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode);
+ if (err)
+ goto out;
+ fourth.__pad = &s;
+ }
+ need_back_translation =
+ (IPCOP_MASK (third) &
+ (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
+ if (need_back_translation)
+ fourth.__pad = &s;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_semctl (first, second, third, fourth);
+ set_fs (old_fs);
+ if (need_back_translation) {
+ int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key);
+ err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid);
+ err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid);
+ err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid);
+ err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid);
+ err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode);
+ err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq);
+ err2 |= __put_user (s.sem_otime, &usp->sem_otime);
+ err2 |= __put_user (s.sem_ctime, &usp->sem_ctime);
+ err2 |= __put_user (s.sem_nsems, &usp->sem_nsems);
+ if (err2) err = -EFAULT;
+ }
+ } else {
+ struct semid_ds s;
+ struct semid_ds32 *usp = (struct semid_ds32 *)A(pad);
+ mm_segment_t old_fs;
+ int need_back_translation;
+
+ if (third == IPC_SET) {
+ err = get_user (s.sem_perm.uid, &usp->sem_perm.uid);
+ err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid);
+ err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode);
+ if (err)
+ goto out;
+ fourth.__pad = &s;
+ }
+ need_back_translation =
+ (IPCOP_MASK (third) &
+ (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
+ if (need_back_translation)
+ fourth.__pad = &s;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_semctl (first, second, third, fourth);
+ set_fs (old_fs);
+ if (need_back_translation) {
+ int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key);
+ err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid);
+ err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid);
+ err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid);
+ err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid);
+ err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode);
+ err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq);
+ err2 |= __put_user (s.sem_otime, &usp->sem_otime);
+ err2 |= __put_user (s.sem_ctime, &usp->sem_ctime);
+ err2 |= __put_user (s.sem_nsems, &usp->sem_nsems);
+ if (err2) err = -EFAULT;
+ }
+ }
+out:
+ return err;
+}
+
+static int do_sys32_msgsnd (int first, int second, int third, void *uptr)
+{
+ struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
+ struct msgbuf32 *up = (struct msgbuf32 *)uptr;
+ mm_segment_t old_fs;
+ int err;
+
+ if (!p)
+ return -ENOMEM;
+ err = get_user (p->mtype, &up->mtype);
+ err |= __copy_from_user (p->mtext, &up->mtext, second);
+ if (err)
+ goto out;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgsnd (first, p, second, third);
+ set_fs (old_fs);
+out:
+ kfree (p);
+ return err;
+}
+
+static int do_sys32_msgrcv (int first, int second, int msgtyp, int third,
+ int version, void *uptr)
+{
+ struct msgbuf32 *up;
+ struct msgbuf *p;
+ mm_segment_t old_fs;
+ int err;
+
+ if (!version) {
+ struct ipc_kludge_32 *uipck = (struct ipc_kludge_32 *)uptr;
+ struct ipc_kludge_32 ipck;
+
+ err = -EINVAL;
+ if (!uptr)
+ goto out;
+ err = -EFAULT;
+ if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge_32)))
+ goto out;
+ uptr = (void *)A(ipck.msgp);
+ msgtyp = ipck.msgtyp;
+ }
+ err = -ENOMEM;
+ p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
+ if (!p)
+ goto out;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgrcv (first, p, second + 4, msgtyp, third);
+ set_fs (old_fs);
+ if (err < 0)
+ goto free_then_out;
+ up = (struct msgbuf32 *)uptr;
+ if (put_user (p->mtype, &up->mtype) ||
+ __copy_to_user (&up->mtext, p->mtext, err))
+ err = -EFAULT;
+free_then_out:
+ kfree (p);
+out:
+ return err;
+}
+
+static int do_sys32_msgctl (int first, int second, void *uptr)
+{
+ int err;
+
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) |
+ IPCOP_MASK (IPC_RMID))) {
+ err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
+ } else if (second & IPC_64) {
+ struct msqid64_ds m;
+ struct msqid64_ds32 *up = (struct msqid64_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ if (second == (IPC_SET|IPC_64)) {
+ err = get_user (m.msg_perm.uid, &up->msg_perm.uid);
+ err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid);
+ err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode);
+ err |= __get_user (m.msg_qbytes, &up->msg_qbytes);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgctl (first, second, (struct msqid_ds *)&m);
+ set_fs (old_fs);
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (m.msg_perm.key, &up->msg_perm.key);
+ err2 |= __put_user (high2lowuid(m.msg_perm.uid), &up->msg_perm.uid);
+ err2 |= __put_user (high2lowgid(m.msg_perm.gid), &up->msg_perm.gid);
+ err2 |= __put_user (high2lowuid(m.msg_perm.cuid), &up->msg_perm.cuid);
+ err2 |= __put_user (high2lowgid(m.msg_perm.cgid), &up->msg_perm.cgid);
+ err2 |= __put_user (m.msg_perm.mode, &up->msg_perm.mode);
+ err2 |= __put_user (m.msg_perm.seq, &up->msg_perm.seq);
+ err2 |= __put_user (m.msg_stime, &up->msg_stime);
+ err2 |= __put_user (m.msg_rtime, &up->msg_rtime);
+ err2 |= __put_user (m.msg_ctime, &up->msg_ctime);
+ err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes);
+ err2 |= __put_user (m.msg_qnum, &up->msg_qnum);
+ err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes);
+ err2 |= __put_user (m.msg_lspid, &up->msg_lspid);
+ err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ } else {
+ struct msqid_ds m;
+ struct msqid_ds32 *up = (struct msqid_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ if (second == IPC_SET) {
+ err = get_user (m.msg_perm.uid, &up->msg_perm.uid);
+ err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid);
+ err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode);
+ err |= __get_user (m.msg_qbytes, &up->msg_qbytes);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgctl (first, second, &m);
+ set_fs (old_fs);
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (m.msg_perm.key, &up->msg_perm.key);
+ err2 |= __put_user (high2lowuid(m.msg_perm.uid), &up->msg_perm.uid);
+ err2 |= __put_user (high2lowgid(m.msg_perm.gid), &up->msg_perm.gid);
+ err2 |= __put_user (high2lowuid(m.msg_perm.cuid), &up->msg_perm.cuid);
+ err2 |= __put_user (high2lowgid(m.msg_perm.cgid), &up->msg_perm.cgid);
+ err2 |= __put_user (m.msg_perm.mode, &up->msg_perm.mode);
+ err2 |= __put_user (m.msg_perm.seq, &up->msg_perm.seq);
+ err2 |= __put_user (m.msg_stime, &up->msg_stime);
+ err2 |= __put_user (m.msg_rtime, &up->msg_rtime);
+ err2 |= __put_user (m.msg_ctime, &up->msg_ctime);
+ err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes);
+ err2 |= __put_user (m.msg_qnum, &up->msg_qnum);
+ err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes);
+ err2 |= __put_user (m.msg_lspid, &up->msg_lspid);
+ err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ }
+
+out:
+ return err;
+}
+
+static int do_sys32_shmat (int first, int second, int third, int version, void *uptr)
+{
+ unsigned long raddr;
+ u32 *uaddr = (u32 *)A((u32)third);
+ int err = -EINVAL;
+
+ if (version == 1)
+ goto out;
+ err = sys_shmat (first, uptr, second, &raddr);
+ if (err)
+ goto out;
+ err = put_user (raddr, uaddr);
+out:
+ return err;
+}
+
+static int do_sys32_shmctl (int first, int second, void *uptr)
+{
+ int err;
+
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SHM_LOCK) | IPCOP_MASK (SHM_UNLOCK) |
+ IPCOP_MASK (IPC_RMID))) {
+ if (second == (IPC_INFO|IPC_64))
+ second = IPC_INFO; /* So that we don't have to translate it */
+ err = sys_shmctl (first, second, (struct shmid_ds *)uptr);
+ } else if ((second & IPC_64) && second != (SHM_INFO|IPC_64)) {
+ struct shmid64_ds s;
+ struct shmid64_ds32 *up = (struct shmid64_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ if (second == (IPC_SET|IPC_64)) {
+ err = get_user (s.shm_perm.uid, &up->shm_perm.uid);
+ err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid);
+ err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_shmctl (first, second, (struct shmid_ds *)&s);
+ set_fs (old_fs);
+ if (err < 0)
+ goto out;
+
+ /* Mask it even in this case so it becomes a CSE. */
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (s.shm_perm.key, &up->shm_perm.key);
+ err2 |= __put_user (high2lowuid(s.shm_perm.uid), &up->shm_perm.uid);
+ err2 |= __put_user (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid);
+ err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid);
+ err2 |= __put_user (high2lowgid(s.shm_perm.cgid), &up->shm_perm.cgid);
+ err2 |= __put_user (s.shm_perm.mode, &up->shm_perm.mode);
+ err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq);
+ err2 |= __put_user (s.shm_atime, &up->shm_atime);
+ err2 |= __put_user (s.shm_dtime, &up->shm_dtime);
+ err2 |= __put_user (s.shm_ctime, &up->shm_ctime);
+ err2 |= __put_user (s.shm_segsz, &up->shm_segsz);
+ err2 |= __put_user (s.shm_nattch, &up->shm_nattch);
+ err2 |= __put_user (s.shm_cpid, &up->shm_cpid);
+ err2 |= __put_user (s.shm_lpid, &up->shm_lpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ } else {
+ struct shmid_ds s;
+ struct shmid_ds32 *up = (struct shmid_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ second &= ~IPC_64;
+ if (second == IPC_SET) {
+ err = get_user (s.shm_perm.uid, &up->shm_perm.uid);
+ err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid);
+ err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_shmctl (first, second, &s);
+ set_fs (old_fs);
+ if (err < 0)
+ goto out;
+
+ /* Mask it even in this case so it becomes a CSE. */
+ if (second == SHM_INFO) {
+ struct shm_info32 {
+ int used_ids;
+ u32 shm_tot, shm_rss, shm_swp;
+ u32 swap_attempts, swap_successes;
+ } *uip = (struct shm_info32 *)uptr;
+ struct shm_info *kp = (struct shm_info *)&s;
+ int err2 = put_user (kp->used_ids, &uip->used_ids);
+ err2 |= __put_user (kp->shm_tot, &uip->shm_tot);
+ err2 |= __put_user (kp->shm_rss, &uip->shm_rss);
+ err2 |= __put_user (kp->shm_swp, &uip->shm_swp);
+ err2 |= __put_user (kp->swap_attempts, &uip->swap_attempts);
+ err2 |= __put_user (kp->swap_successes, &uip->swap_successes);
+ if (err2)
+ err = -EFAULT;
+ } else if (IPCOP_MASK (second) &
+ (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (s.shm_perm.key, &up->shm_perm.key);
+ err2 |= __put_user (high2lowuid(s.shm_perm.uid), &up->shm_perm.uid);
+ err2 |= __put_user (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid);
+ err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid);
+ err2 |= __put_user (high2lowgid(s.shm_perm.cgid), &up->shm_perm.cgid);
+ err2 |= __put_user (s.shm_perm.mode, &up->shm_perm.mode);
+ err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq);
+ err2 |= __put_user (s.shm_atime, &up->shm_atime);
+ err2 |= __put_user (s.shm_dtime, &up->shm_dtime);
+ err2 |= __put_user (s.shm_ctime, &up->shm_ctime);
+ err2 |= __put_user (s.shm_segsz, &up->shm_segsz);
+ err2 |= __put_user (s.shm_nattch, &up->shm_nattch);
+ err2 |= __put_user (s.shm_cpid, &up->shm_cpid);
+ err2 |= __put_user (s.shm_lpid, &up->shm_lpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ }
+out:
+ return err;
+}
+
+asmlinkage int sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
+{
+ int version, err;
+
+ version = call >> 16; /* hack for backward compatibility */
+ call &= 0xffff;
+
+ if(version)
+ return -EINVAL;
+
+ if (call <= SEMCTL)
+ switch (call) {
+ case SEMOP:
+ /* struct sembuf is the same on 32 and 64bit :)) */
+ err = sys_semop (first, (struct sembuf *)AA(ptr), second);
+ goto out;
+ case SEMGET:
+ err = sys_semget (first, second, third);
+ goto out;
+ case SEMCTL:
+ err = do_sys32_semctl (first, second, third, (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ };
+ if (call <= MSGCTL)
+ switch (call) {
+ case MSGSND:
+ err = do_sys32_msgsnd (first, second, third, (void *)AA(ptr));
+ goto out;
+ case MSGRCV:
+ err = do_sys32_msgrcv (first, second, 0, third,
+ version, (void *)AA(ptr));
+ goto out;
+ case MSGGET:
+ err = sys_msgget ((key_t) first, second);
+ goto out;
+ case MSGCTL:
+ err = do_sys32_msgctl (first, second, (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ }
+ if (call <= SHMCTL)
+ switch (call) {
+ case SHMAT:
+ err = do_sys32_shmat (first, second, third,
+ version, (void *)AA(ptr));
+ goto out;
+ case SHMDT:
+ err = sys_shmdt ((char *)AA(ptr));
+ goto out;
+ case SHMGET:
+ err = sys_shmget (first, second, third);
+ goto out;
+ case SHMCTL:
+ err = do_sys32_shmctl (first, second, (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = -EINVAL;
+
+out:
+ return err;
+}
+
+static inline int get_flock(struct flock *kfl, struct flock32 *ufl)
+{
+ int err;
+
+ err = get_user(kfl->l_type, &ufl->l_type);
+ err |= __get_user(kfl->l_whence, &ufl->l_whence);
+ err |= __get_user(kfl->l_start, &ufl->l_start);
+ err |= __get_user(kfl->l_len, &ufl->l_len);
+ err |= __get_user(kfl->l_pid, &ufl->l_pid);
+ return err;
+}
+
+static inline int put_flock(struct flock *kfl, struct flock32 *ufl)
+{
+ int err;
+
+ err = __put_user(kfl->l_type, &ufl->l_type);
+ err |= __put_user(kfl->l_whence, &ufl->l_whence);
+ err |= __put_user(kfl->l_start, &ufl->l_start);
+ err |= __put_user(kfl->l_len, &ufl->l_len);
+ err |= __put_user(kfl->l_pid, &ufl->l_pid);
+ return err;
+}
+
+extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
+
+asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case F_GETLK:
+ case F_SETLK:
+ case F_SETLKW:
+ {
+ struct flock f;
+ mm_segment_t old_fs;
+ long ret;
+
+ if(get_flock(&f, (struct flock32 *)arg))
+ return -EFAULT;
+ old_fs = get_fs(); set_fs (KERNEL_DS);
+ ret = sys_fcntl(fd, cmd, (unsigned long)&f);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (f.l_start >= 0x7fffffffUL ||
+ f.l_len >= 0x7fffffffUL ||
+ f.l_start + f.l_len >= 0x7fffffffUL)
+ return -EOVERFLOW;
+ if(put_flock(&f, (struct flock32 *)arg))
+ return -EFAULT;
+ return 0;
+ }
+ default:
+ return sys_fcntl(fd, cmd, (unsigned long)arg);
+ }
+}
+
+asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+ if (cmd >= F_GETLK64 && cmd <= F_SETLKW64)
+ return sys_fcntl(fd, cmd + F_GETLK - F_GETLK64, arg);
+ return sys32_fcntl(fd, cmd, arg);
+}
+
+struct dqblk32 {
+ __u32 dqb_bhardlimit;
+ __u32 dqb_bsoftlimit;
+ __u32 dqb_curblocks;
+ __u32 dqb_ihardlimit;
+ __u32 dqb_isoftlimit;
+ __u32 dqb_curinodes;
+ __kernel_time_t32 dqb_btime;
+ __kernel_time_t32 dqb_itime;
+};
+
+extern asmlinkage int sys_quotactl(int cmd, const char *special, int id, caddr_t addr);
+
+asmlinkage int sys32_quotactl(int cmd, const char *special, int id, unsigned long addr)
+{
+ int cmds = cmd >> SUBCMDSHIFT;
+ int err;
+ struct mem_dqblk d;
+ mm_segment_t old_fs;
+ char *spec;
+
+ switch (cmds) {
+ case Q_GETQUOTA:
+ break;
+ case Q_SETQUOTA:
+ case Q_SETUSE:
+ case Q_SETQLIM:
+ if (copy_from_user (&d, (struct dqblk32 *)addr,
+ sizeof (struct dqblk32)))
+ return -EFAULT;
+ d.dqb_itime = ((struct dqblk32 *)&d)->dqb_itime;
+ d.dqb_btime = ((struct dqblk32 *)&d)->dqb_btime;
+ break;
+ default:
+ return sys_quotactl(cmd, special,
+ id, (caddr_t)addr);
+ }
+ spec = getname (special);
+ err = PTR_ERR(spec);
+ if (IS_ERR(spec)) return err;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_quotactl(cmd, (const char *)spec, id, (caddr_t)&d);
+ set_fs (old_fs);
+ putname (spec);
+ if (cmds == Q_GETQUOTA) {
+ __kernel_time_t b = d.dqb_btime, i = d.dqb_itime;
+ ((struct dqblk32 *)&d)->dqb_itime = i;
+ ((struct dqblk32 *)&d)->dqb_btime = b;
+ if (copy_to_user ((struct dqblk32 *)addr, &d,
+ sizeof (struct dqblk32)))
+ return -EFAULT;
+ }
+ return err;
+}
+
+static inline int put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
+{
+ int err;
+
+ err = put_user (kbuf->f_type, &ubuf->f_type);
+ err |= __put_user (kbuf->f_bsize, &ubuf->f_bsize);
+ err |= __put_user (kbuf->f_blocks, &ubuf->f_blocks);
+ err |= __put_user (kbuf->f_bfree, &ubuf->f_bfree);
+ err |= __put_user (kbuf->f_bavail, &ubuf->f_bavail);
+ err |= __put_user (kbuf->f_files, &ubuf->f_files);
+ err |= __put_user (kbuf->f_ffree, &ubuf->f_ffree);
+ err |= __put_user (kbuf->f_namelen, &ubuf->f_namelen);
+ err |= __put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]);
+ err |= __put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]);
+ return err;
+}
+
+extern asmlinkage int sys_statfs(const char * path, struct statfs * buf);
+
+asmlinkage int sys32_statfs(const char * path, struct statfs32 *buf)
+{
+ int ret;
+ struct statfs s;
+ mm_segment_t old_fs = get_fs();
+ char *pth;
+
+ pth = getname (path);
+ ret = PTR_ERR(pth);
+ if (!IS_ERR(pth)) {
+ set_fs (KERNEL_DS);
+ ret = sys_statfs((const char *)pth, &s);
+ set_fs (old_fs);
+ putname (pth);
+ if (put_statfs(buf, &s))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage int sys_fstatfs(unsigned int fd, struct statfs * buf);
+
+asmlinkage int sys32_fstatfs(unsigned int fd, struct statfs32 *buf)
+{
+ int ret;
+ struct statfs s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_fstatfs(fd, &s);
+ set_fs (old_fs);
+ if (put_statfs(buf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_truncate(const char * path, unsigned long length);
+extern asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
+
+asmlinkage int sys32_truncate64(const char * path, unsigned long high, unsigned long low)
+{
+ if ((int)high < 0)
+ return -EINVAL;
+ else
+ return sys_truncate(path, (high << 32) | low);
+}
+
+asmlinkage int sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
+{
+ if ((int)high < 0)
+ return -EINVAL;
+ else
+ return sys_ftruncate(fd, (high << 32) | low);
+}
+
+extern asmlinkage int sys_utime(char * filename, struct utimbuf * times);
+
+struct utimbuf32 {
+ __kernel_time_t32 actime, modtime;
+};
+
+asmlinkage int sys32_utime(char * filename, struct utimbuf32 *times)
+{
+ struct utimbuf t;
+ mm_segment_t old_fs;
+ int ret;
+ char *filenam;
+
+ if (!times)
+ return sys_utime(filename, NULL);
+ if (get_user (t.actime, ×->actime) ||
+ __get_user (t.modtime, ×->modtime))
+ return -EFAULT;
+ filenam = getname (filename);
+ ret = PTR_ERR(filenam);
+ if (!IS_ERR(filenam)) {
+ old_fs = get_fs();
+ set_fs (KERNEL_DS);
+ ret = sys_utime(filenam, &t);
+ set_fs (old_fs);
+ putname (filenam);
+ }
+ return ret;
+}
+
+struct iovec32 { u32 iov_base; __kernel_size_t32 iov_len; };
+
+typedef ssize_t (*io_fn_t)(struct file *, char *, size_t, loff_t *);
+typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
+
+static long do_readv_writev32(int type, struct file *file,
+ const struct iovec32 *vector, u32 count)
+{
+ unsigned long tot_len;
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov=iovstack, *ivp;
+ struct inode *inode;
+ long retval, i;
+ io_fn_t fn;
+ iov_fn_t fnv;
+
+ /* First get the "struct iovec" from user memory and
+ * verify all the pointers
+ */
+ if (!count)
+ return 0;
+ if (verify_area(VERIFY_READ, vector, sizeof(struct iovec32)*count))
+ return -EFAULT;
+ if (count > UIO_MAXIOV)
+ return -EINVAL;
+ if (count > UIO_FASTIOV) {
+ iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
+ if (!iov)
+ return -ENOMEM;
+ }
+
+ tot_len = 0;
+ i = count;
+ ivp = iov;
+ while(i > 0) {
+ u32 len;
+ u32 buf;
+
+ __get_user(len, &vector->iov_len);
+ __get_user(buf, &vector->iov_base);
+ tot_len += len;
+ ivp->iov_base = (void *)A(buf);
+ ivp->iov_len = (__kernel_size_t) len;
+ vector++;
+ ivp++;
+ i--;
+ }
+
+ inode = file->f_dentry->d_inode;
+ /* VERIFY_WRITE actually means a read, as we write to user space */
+ retval = locks_verify_area((type == VERIFY_WRITE
+ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
+ inode, file, file->f_pos, tot_len);
+ if (retval)
+ goto out;
+
+ /* VERIFY_WRITE actually means a read, as we write to user space */
+ fnv = (type == VERIFY_WRITE ? file->f_op->readv : file->f_op->writev);
+ if (fnv) {
+ retval = fnv(file, iov, count, &file->f_pos);
+ goto out;
+ }
+
+ fn = (type == VERIFY_WRITE ? file->f_op->read :
+ (io_fn_t) file->f_op->write);
+
+ ivp = iov;
+ while (count > 0) {
+ void * base;
+ int len, nr;
+
+ base = ivp->iov_base;
+ len = ivp->iov_len;
+ ivp++;
+ count--;
+ nr = fn(file, base, len, &file->f_pos);
+ if (nr < 0) {
+ if (!retval)
+ retval = nr;
+ break;
+ }
+ retval += nr;
+ if (nr != len)
+ break;
+ }
+out:
+ if (iov != iovstack)
+ kfree(iov);
+
+ return retval;
+}
+
+asmlinkage long sys32_readv(int fd, struct iovec32 *vector, u32 count)
+{
+ struct file *file;
+ long ret = -EBADF;
+
+ file = fget(fd);
+ if(!file)
+ goto bad_file;
+
+ if (file->f_op && (file->f_mode & FMODE_READ) &&
+ (file->f_op->readv || file->f_op->read))
+ ret = do_readv_writev32(VERIFY_WRITE, file, vector, count);
+ fput(file);
+
+bad_file:
+ return ret;
+}
+
+asmlinkage long sys32_writev(int fd, struct iovec32 *vector, u32 count)
+{
+ struct file *file;
+ int ret = -EBADF;
+
+ file = fget(fd);
+ if(!file)
+ goto bad_file;
+ if (file->f_op && (file->f_mode & FMODE_WRITE) &&
+ (file->f_op->writev || file->f_op->write))
+ ret = do_readv_writev32(VERIFY_READ, file, vector, count);
+ fput(file);
+
+bad_file:
+ return ret;
+}
+
+/* readdir & getdents */
+
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+#define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
+
+struct old_linux_dirent32 {
+ u32 d_ino;
+ u32 d_offset;
+ unsigned short d_namlen;
+ char d_name[1];
+};
+
+struct readdir_callback32 {
+ struct old_linux_dirent32 * dirent;
+ int count;
+};
+
+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;
+
+ if (buf->count)
+ return -EINVAL;
+ buf->count++;
+ dirent = buf->dirent;
+ put_user(ino, &dirent->d_ino);
+ put_user(offset, &dirent->d_offset);
+ put_user(namlen, &dirent->d_namlen);
+ copy_to_user(dirent->d_name, name, namlen);
+ put_user(0, dirent->d_name + namlen);
+ return 0;
+}
+
+asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 *dirent, unsigned int count)
+{
+ int error = -EBADF;
+ struct file * file;
+ struct readdir_callback32 buf;
+
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.count = 0;
+ buf.dirent = dirent;
+
+ error = vfs_readdir(file, fillonedir, &buf);
+ if (error < 0)
+ goto out_putf;
+ error = buf.count;
+
+out_putf:
+ fput(file);
+out:
+ return error;
+}
+
+struct linux_dirent32 {
+ u32 d_ino;
+ u32 d_off;
+ unsigned short d_reclen;
+ char d_name[1];
+};
+
+struct getdents_callback32 {
+ struct linux_dirent32 * current_dir;
+ struct linux_dirent32 * previous;
+ int count;
+ int error;
+};
+
+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 getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
+ int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
+
+ buf->error = -EINVAL; /* only used if we fail.. */
+ if (reclen > buf->count)
+ return -EINVAL;
+ dirent = buf->previous;
+ if (dirent)
+ put_user(offset, &dirent->d_off);
+ dirent = buf->current_dir;
+ buf->previous = dirent;
+ put_user(ino, &dirent->d_ino);
+ put_user(reclen, &dirent->d_reclen);
+ copy_to_user(dirent->d_name, name, namlen);
+ put_user(0, dirent->d_name + namlen);
+ ((char *) dirent) += reclen;
+ buf->current_dir = dirent;
+ buf->count -= reclen;
+ return 0;
+}
+
+asmlinkage int sys32_getdents(unsigned int fd, struct linux_dirent32 *dirent, unsigned int count)
+{
+ struct file * file;
+ struct linux_dirent32 * lastdirent;
+ struct getdents_callback32 buf;
+ int error = -EBADF;
+
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.current_dir = dirent;
+ buf.previous = NULL;
+ buf.count = count;
+ buf.error = 0;
+
+ error = vfs_readdir(file, filldir, &buf);
+ if (error < 0)
+ goto out_putf;
+ lastdirent = buf.previous;
+ error = buf.error;
+ if(lastdirent) {
+ put_user(file->f_pos, &lastdirent->d_off);
+ error = count - buf.count;
+ }
+out_putf:
+ fput(file);
+out:
+ return error;
+}
+
+/* end of readdir & getdents */
+
+/*
+ * Ooo, nasty. We need here to frob 32-bit unsigned longs to
+ * 64-bit unsigned longs.
+ */
+
+static inline int
+get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
+{
+ if (ufdset) {
+ unsigned long odd;
+
+ if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
+ return -EFAULT;
+
+ odd = n & 1UL;
+ n &= ~1UL;
+ while (n) {
+ unsigned long h, l;
+ __get_user(l, ufdset);
+ __get_user(h, ufdset+1);
+ ufdset += 2;
+ *fdset++ = h << 32 | l;
+ n -= 2;
+ }
+ if (odd)
+ __get_user(*fdset, ufdset);
+ } else {
+ /* Tricky, must clear full unsigned long in the
+ * kernel fdset at the end, this makes sure that
+ * actually happens.
+ */
+ memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
+ }
+ return 0;
+}
+
+static inline void
+set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
+{
+ unsigned long odd;
+
+ if (!ufdset)
+ return;
+
+ odd = n & 1UL;
+ n &= ~1UL;
+ while (n) {
+ unsigned long h, l;
+ l = *fdset++;
+ h = l >> 32;
+ __put_user(l, ufdset);
+ __put_user(h, ufdset+1);
+ ufdset += 2;
+ n -= 2;
+ }
+ if (odd)
+ __put_user(*fdset, ufdset);
+}
+
+#define MAX_SELECT_SECONDS \
+ ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
+
+asmlinkage int sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, u32 tvp_x)
+{
+ fd_set_bits fds;
+ struct timeval32 *tvp = (struct timeval32 *)AA(tvp_x);
+ char *bits;
+ unsigned long nn;
+ long timeout;
+ int ret, size;
+
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ if (tvp) {
+ time_t sec, usec;
+
+ if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
+ || (ret = __get_user(sec, &tvp->tv_sec))
+ || (ret = __get_user(usec, &tvp->tv_usec)))
+ goto out_nofds;
+
+ ret = -EINVAL;
+ if(sec < 0 || usec < 0)
+ goto out_nofds;
+
+ if ((unsigned long) sec < MAX_SELECT_SECONDS) {
+ timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
+ timeout += sec * (unsigned long) HZ;
+ }
+ }
+
+ ret = -EINVAL;
+ if (n < 0)
+ goto out_nofds;
+ if (n > current->files->max_fdset)
+ n = current->files->max_fdset;
+
+ /*
+ * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
+ * since we used fdset we need to allocate memory in units of
+ * long-words.
+ */
+ ret = -ENOMEM;
+ size = FDS_BYTES(n);
+ bits = kmalloc(6 * size, GFP_KERNEL);
+ if (!bits)
+ goto out_nofds;
+ fds.in = (unsigned long *) bits;
+ fds.out = (unsigned long *) (bits + size);
+ fds.ex = (unsigned long *) (bits + 2*size);
+ fds.res_in = (unsigned long *) (bits + 3*size);
+ fds.res_out = (unsigned long *) (bits + 4*size);
+ fds.res_ex = (unsigned long *) (bits + 5*size);
+
+ nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
+ if ((ret = get_fd_set32(nn, fds.in, inp)) ||
+ (ret = get_fd_set32(nn, fds.out, outp)) ||
+ (ret = get_fd_set32(nn, fds.ex, exp)))
+ goto out;
+ zero_fd_set(n, fds.res_in);
+ zero_fd_set(n, fds.res_out);
+ zero_fd_set(n, fds.res_ex);
+
+ ret = do_select(n, &fds, &timeout);
+
+ if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
+ time_t sec = 0, usec = 0;
+ if (timeout) {
+ sec = timeout / HZ;
+ usec = timeout % HZ;
+ usec *= (1000000/HZ);
+ }
+ put_user(sec, &tvp->tv_sec);
+ put_user(usec, &tvp->tv_usec);
+ }
+
+ if (ret < 0)
+ goto out;
+ if (!ret) {
+ ret = -ERESTARTNOHAND;
+ if (signal_pending(current))
+ goto out;
+ ret = 0;
+ }
+
+ set_fd_set32(nn, inp, fds.res_in);
+ set_fd_set32(nn, outp, fds.res_out);
+ set_fd_set32(nn, exp, fds.res_ex);
+
+out:
+ kfree(bits);
+out_nofds:
+ return ret;
+}
+
+static int cp_new_stat32(struct inode *inode, struct stat32 *statbuf)
+{
+ unsigned long ino, blksize, blocks;
+ kdev_t dev, rdev;
+ umode_t mode;
+ nlink_t nlink;
+ uid_t uid;
+ gid_t gid;
+ off_t size;
+ time_t atime, mtime, ctime;
+ int err;
+
+ /* Stream the loads of inode data into the load buffer,
+ * then we push it all into the store buffer below. This
+ * should give optimal cache performance.
+ */
+ ino = inode->i_ino;
+ dev = inode->i_dev;
+ mode = inode->i_mode;
+ nlink = inode->i_nlink;
+ uid = inode->i_uid;
+ gid = inode->i_gid;
+ rdev = inode->i_rdev;
+ size = inode->i_size;
+ atime = inode->i_atime;
+ mtime = inode->i_mtime;
+ ctime = inode->i_ctime;
+ blksize = inode->i_blksize;
+ blocks = inode->i_blocks;
+
+ err = put_user(kdev_t_to_nr(dev), &statbuf->st_dev);
+ err |= put_user(ino, &statbuf->st_ino);
+ err |= put_user(mode, &statbuf->st_mode);
+ err |= put_user(nlink, &statbuf->st_nlink);
+ err |= put_user(high2lowuid(uid), &statbuf->st_uid);
+ err |= put_user(high2lowgid(gid), &statbuf->st_gid);
+ err |= put_user(kdev_t_to_nr(rdev), &statbuf->st_rdev);
+ err |= put_user(size, &statbuf->st_size);
+ err |= put_user(atime, &statbuf->st_atime);
+ err |= put_user(0, &statbuf->__unused1);
+ err |= put_user(mtime, &statbuf->st_mtime);
+ err |= put_user(0, &statbuf->__unused2);
+ err |= put_user(ctime, &statbuf->st_ctime);
+ err |= put_user(0, &statbuf->__unused3);
+ if (blksize) {
+ err |= put_user(blksize, &statbuf->st_blksize);
+ err |= put_user(blocks, &statbuf->st_blocks);
+ } else {
+ unsigned int tmp_blocks;
+
+#define D_B 7
+#define I_B (BLOCK_SIZE / sizeof(unsigned short))
+ tmp_blocks = (size + BLOCK_SIZE - 1) / BLOCK_SIZE;
+ if (tmp_blocks > D_B) {
+ unsigned int indirect;
+
+ indirect = (tmp_blocks - D_B + I_B - 1) / I_B;
+ tmp_blocks += indirect;
+ if (indirect > 1) {
+ indirect = (indirect - 1 + I_B - 1) / I_B;
+ tmp_blocks += indirect;
+ if (indirect > 1)
+ tmp_blocks++;
+ }
+ }
+ err |= put_user(BLOCK_SIZE, &statbuf->st_blksize);
+ err |= put_user((BLOCK_SIZE / 512) * tmp_blocks, &statbuf->st_blocks);
+#undef D_B
+#undef I_B
+ }
+/* fixme
+ err |= put_user(0, &statbuf->__unused4[0]);
+ err |= put_user(0, &statbuf->__unused4[1]);
+*/
+
+ return err;
+}
+
+/* Perhaps this belongs in fs.h or similar. -DaveM */
+static __inline__ int
+do_revalidate(struct dentry *dentry)
+{
+ struct inode * inode = dentry->d_inode;
+ if (inode->i_op && inode->i_op->revalidate)
+ return inode->i_op->revalidate(dentry);
+ return 0;
+}
+
+asmlinkage int sys32_newstat(char * filename, struct stat32 *statbuf)
+{
+ struct nameidata nd;
+ int error;
+
+ error = user_path_walk(filename, &nd);
+ if (!error) {
+ error = do_revalidate(nd.dentry);
+ if (!error)
+ error = cp_new_stat32(nd.dentry->d_inode, statbuf);
+ path_release(&nd);
+ }
+ return error;
+}
+
+asmlinkage int sys32_newlstat(char * filename, struct stat32 *statbuf)
+{
+ struct nameidata nd;
+ int error;
+
+ error = user_path_walk_link(filename, &nd);
+ if (!error) {
+ error = do_revalidate(nd.dentry);
+ if (!error)
+ error = cp_new_stat32(nd.dentry->d_inode, statbuf);
+
+ path_release(&nd);
+ }
+ return error;
+}
+
+asmlinkage int sys32_newfstat(unsigned int fd, struct stat32 *statbuf)
+{
+ struct file *f;
+ int err = -EBADF;
+
+ f = fget(fd);
+ if (f) {
+ struct dentry * dentry = f->f_dentry;
+
+ err = do_revalidate(dentry);
+ if (!err)
+ err = cp_new_stat32(dentry->d_inode, statbuf);
+ fput(f);
+ }
+ return err;
+}
+
+extern asmlinkage int sys_sysfs(int option, unsigned long arg1, unsigned long arg2);
+
+asmlinkage int sys32_sysfs(int option, u32 arg1, u32 arg2)
+{
+ return sys_sysfs(option, arg1, arg2);
+}
+
+struct ncp_mount_data32 {
+ int version;
+ unsigned int ncp_fd;
+ __kernel_uid_t32 mounted_uid;
+ __kernel_pid_t32 wdog_pid;
+ unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
+ unsigned int time_out;
+ unsigned int retry_count;
+ unsigned int flags;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_mode_t32 file_mode;
+ __kernel_mode_t32 dir_mode;
+};
+
+static void *do_ncp_super_data_conv(void *raw_data)
+{
+ struct ncp_mount_data *n = (struct ncp_mount_data *)raw_data;
+ struct ncp_mount_data32 *n32 = (struct ncp_mount_data32 *)raw_data;
+
+ n->dir_mode = n32->dir_mode;
+ n->file_mode = n32->file_mode;
+ n->gid = low2highgid(n32->gid);
+ n->uid = low2highuid(n32->uid);
+ memmove (n->mounted_vol, n32->mounted_vol, (sizeof (n32->mounted_vol) + 3 * sizeof (unsigned int)));
+ n->wdog_pid = n32->wdog_pid;
+ n->mounted_uid = low2highuid(n32->mounted_uid);
+ return raw_data;
+}
+
+struct smb_mount_data32 {
+ int version;
+ __kernel_uid_t32 mounted_uid;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_mode_t32 file_mode;
+ __kernel_mode_t32 dir_mode;
+};
+
+static void *do_smb_super_data_conv(void *raw_data)
+{
+ struct smb_mount_data *s = (struct smb_mount_data *)raw_data;
+ struct smb_mount_data32 *s32 = (struct smb_mount_data32 *)raw_data;
+
+ s->version = s32->version;
+ s->mounted_uid = low2highuid(s32->mounted_uid);
+ s->uid = low2highuid(s32->uid);
+ s->gid = low2highgid(s32->gid);
+ s->file_mode = s32->file_mode;
+ s->dir_mode = s32->dir_mode;
+ return raw_data;
+}
+
+static int copy_mount_stuff_to_kernel(const void *user, unsigned long *kernel)
+{
+ int i;
+ unsigned long page;
+ struct vm_area_struct *vma;
+
+ *kernel = 0;
+ if(!user)
+ return 0;
+ vma = find_vma(current->mm, (unsigned long)user);
+ if(!vma || (unsigned long)user < vma->vm_start)
+ return -EFAULT;
+ if(!(vma->vm_flags & VM_READ))
+ return -EFAULT;
+ i = vma->vm_end - (unsigned long) user;
+ if(PAGE_SIZE <= (unsigned long) i)
+ i = PAGE_SIZE - 1;
+ if(!(page = __get_free_page(GFP_KERNEL)))
+ return -ENOMEM;
+ if(copy_from_user((void *) page, user, i)) {
+ free_page(page);
+ return -EFAULT;
+ }
+ *kernel = page;
+ return 0;
+}
+
+#define SMBFS_NAME "smbfs"
+#define NCPFS_NAME "ncpfs"
+
+asmlinkage int sys32_mount(char *dev_name, char *dir_name, char *type, unsigned long new_flags, u32 data)
+{
+ unsigned long type_page = 0;
+ unsigned long data_page = 0;
+ unsigned long dev_page = 0;
+ unsigned long dir_page = 0;
+ int err, is_smb, is_ncp;
+
+ is_smb = is_ncp = 0;
+
+ err = copy_mount_stuff_to_kernel((const void *)type, &type_page);
+ if (err)
+ goto out;
+
+ if (!type_page) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ is_smb = !strcmp((char *)type_page, SMBFS_NAME);
+ is_ncp = !strcmp((char *)type_page, NCPFS_NAME);
+
+ err = copy_mount_stuff_to_kernel((const void *)AA(data), &data_page);
+ if (err)
+ goto type_out;
+
+ err = copy_mount_stuff_to_kernel(dev_name, &dev_page);
+ if (err)
+ goto data_out;
+
+ err = copy_mount_stuff_to_kernel(dir_name, &dir_page);
+ if (err)
+ goto dev_out;
+
+ if (!is_smb && !is_ncp) {
+ lock_kernel();
+ err = do_mount((char*)dev_page, (char*)dir_page,
+ (char*)type_page, new_flags, (char*)data_page);
+ unlock_kernel();
+ } else {
+ if (is_ncp)
+ do_ncp_super_data_conv((void *)data_page);
+ else
+ do_smb_super_data_conv((void *)data_page);
+
+ lock_kernel();
+ err = do_mount((char*)dev_page, (char*)dir_page,
+ (char*)type_page, new_flags, (char*)data_page);
+ unlock_kernel();
+ }
+ free_page(dir_page);
+
+dev_out:
+ free_page(dev_page);
+
+data_out:
+ free_page(data_page);
+
+type_out:
+ free_page(type_page);
+
+out:
+ return err;
+}
+
+struct rusage32 {
+ struct timeval32 ru_utime;
+ struct timeval32 ru_stime;
+ s32 ru_maxrss;
+ s32 ru_ixrss;
+ s32 ru_idrss;
+ s32 ru_isrss;
+ s32 ru_minflt;
+ s32 ru_majflt;
+ s32 ru_nswap;
+ s32 ru_inblock;
+ s32 ru_oublock;
+ s32 ru_msgsnd;
+ s32 ru_msgrcv;
+ s32 ru_nsignals;
+ s32 ru_nvcsw;
+ s32 ru_nivcsw;
+};
+
+static int put_rusage (struct rusage32 *ru, struct rusage *r)
+{
+ int err;
+
+ err = put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec);
+ err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec);
+ err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec);
+ err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec);
+ err |= __put_user (r->ru_maxrss, &ru->ru_maxrss);
+ err |= __put_user (r->ru_ixrss, &ru->ru_ixrss);
+ err |= __put_user (r->ru_idrss, &ru->ru_idrss);
+ err |= __put_user (r->ru_isrss, &ru->ru_isrss);
+ err |= __put_user (r->ru_minflt, &ru->ru_minflt);
+ err |= __put_user (r->ru_majflt, &ru->ru_majflt);
+ err |= __put_user (r->ru_nswap, &ru->ru_nswap);
+ err |= __put_user (r->ru_inblock, &ru->ru_inblock);
+ err |= __put_user (r->ru_oublock, &ru->ru_oublock);
+ err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd);
+ err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv);
+ err |= __put_user (r->ru_nsignals, &ru->ru_nsignals);
+ err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw);
+ err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw);
+ return err;
+}
+
+asmlinkage int sys32_wait4(__kernel_pid_t32 pid, unsigned int *stat_addr, int options, struct rusage32 *ru)
+{
+ if (!ru)
+ return sys_wait4(pid, stat_addr, options, NULL);
+ else {
+ struct rusage r;
+ int ret;
+ unsigned int status;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
+ set_fs (old_fs);
+ if (put_rusage (ru, &r)) return -EFAULT;
+ if (stat_addr && put_user (status, stat_addr))
+ return -EFAULT;
+ return ret;
+ }
+}
+
+struct sysinfo32 {
+ s32 uptime;
+ u32 loads[3];
+ u32 totalram;
+ u32 freeram;
+ u32 sharedram;
+ u32 bufferram;
+ u32 totalswap;
+ u32 freeswap;
+ unsigned short procs;
+ char _f[22];
+};
+
+extern asmlinkage int sys_sysinfo(struct sysinfo *info);
+
+asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
+{
+ struct sysinfo s;
+ int ret, err;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sysinfo(&s);
+ set_fs (old_fs);
+ err = put_user (s.uptime, &info->uptime);
+ err |= __put_user (s.loads[0], &info->loads[0]);
+ err |= __put_user (s.loads[1], &info->loads[1]);
+ err |= __put_user (s.loads[2], &info->loads[2]);
+ err |= __put_user (s.totalram, &info->totalram);
+ err |= __put_user (s.freeram, &info->freeram);
+ err |= __put_user (s.sharedram, &info->sharedram);
+ err |= __put_user (s.bufferram, &info->bufferram);
+ err |= __put_user (s.totalswap, &info->totalswap);
+ err |= __put_user (s.freeswap, &info->freeswap);
+ err |= __put_user (s.procs, &info->procs);
+ if (err)
+ return -EFAULT;
+ return ret;
+}
+
+struct timespec32 {
+ s32 tv_sec;
+ s32 tv_nsec;
+};
+
+extern asmlinkage int sys_sched_rr_get_interval(pid_t pid, struct timespec *interval);
+
+asmlinkage int sys32_sched_rr_get_interval(__kernel_pid_t32 pid, struct timespec32 *interval)
+{
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sched_rr_get_interval(pid, &t);
+ set_fs (old_fs);
+ if (put_user (t.tv_sec, &interval->tv_sec) ||
+ __put_user (t.tv_nsec, &interval->tv_nsec))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp);
+
+asmlinkage int sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
+{
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ if (get_user (t.tv_sec, &rqtp->tv_sec) ||
+ __get_user (t.tv_nsec, &rqtp->tv_nsec))
+ return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_nanosleep(&t, rmtp ? &t : NULL);
+ set_fs (old_fs);
+ if (rmtp && ret == -EINTR) {
+ if (__put_user (t.tv_sec, &rmtp->tv_sec) ||
+ __put_user (t.tv_nsec, &rmtp->tv_nsec))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage int sys_sigprocmask(int how, old_sigset_t *set, old_sigset_t *oset);
+
+asmlinkage int sys32_sigprocmask(int how, old_sigset_t32 *set, old_sigset_t32 *oset)
+{
+ old_sigset_t s;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (set && get_user (s, set)) return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (oset && put_user (s, oset)) return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage int sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset, size_t sigsetsize);
+
+asmlinkage int sys32_rt_sigprocmask(int how, sigset_t32 *set, sigset_t32 *oset, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset_t32 s32;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (set) {
+ if (copy_from_user (&s32, set, sizeof(sigset_t32)))
+ return -EFAULT;
+ switch (_NSIG_WORDS) {
+ case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
+ case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
+ case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
+ case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
+ }
+ }
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL, sigsetsize);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (oset) {
+ switch (_NSIG_WORDS) {
+ case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
+ case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
+ case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
+ case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
+ }
+ if (copy_to_user (oset, &s32, sizeof(sigset_t32)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+extern asmlinkage int sys_sigpending(old_sigset_t *set);
+
+asmlinkage int sys32_sigpending(old_sigset_t32 *set)
+{
+ old_sigset_t s;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sigpending(&s);
+ set_fs (old_fs);
+ if (put_user (s, set)) return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
+
+asmlinkage int sys32_rt_sigpending(sigset_t32 *set, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset_t32 s32;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigpending(&s, sigsetsize);
+ set_fs (old_fs);
+ if (!ret) {
+ switch (_NSIG_WORDS) {
+ case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
+ case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
+ case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
+ case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
+ }
+ if (copy_to_user (set, &s32, sizeof(sigset_t32)))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+extern int
+copy_siginfo_to_user32(siginfo_t32 *to, siginfo_t *from);
+
+asmlinkage int
+sys32_rt_sigtimedwait(sigset_t32 *uthese, siginfo_t32 *uinfo,
+ struct timespec32 *uts, __kernel_size_t32 sigsetsize)
+{
+ int ret, sig;
+ sigset_t these;
+ sigset_t32 these32;
+ struct timespec ts;
+ siginfo_t info;
+ long timeout = 0;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user (&these32, uthese, sizeof(sigset_t32)))
+ return -EFAULT;
+
+ switch (_NSIG_WORDS) {
+ case 4: these.sig[3] = these32.sig[6] | (((long)these32.sig[7]) << 32);
+ case 3: these.sig[2] = these32.sig[4] | (((long)these32.sig[5]) << 32);
+ case 2: these.sig[1] = these32.sig[2] | (((long)these32.sig[3]) << 32);
+ case 1: these.sig[0] = these32.sig[0] | (((long)these32.sig[1]) << 32);
+ }
+
+ /*
+ * Invert the set of allowed signals to get those we
+ * want to block.
+ */
+ sigdelsetmask(&these, sigmask(SIGKILL)|sigmask(SIGSTOP));
+ signotset(&these);
+
+ if (uts) {
+ if (get_user (ts.tv_sec, &uts->tv_sec) ||
+ get_user (ts.tv_nsec, &uts->tv_nsec))
+ return -EINVAL;
+ if (ts.tv_nsec >= 1000000000L || ts.tv_nsec < 0
+ || ts.tv_sec < 0)
+ return -EINVAL;
+ }
+
+ spin_lock_irq(¤t->sigmask_lock);
+ sig = dequeue_signal(&these, &info);
+ if (!sig) {
+ /* None ready -- temporarily unblock those we're interested
+ in so that we'll be awakened when they arrive. */
+ sigset_t oldblocked = current->blocked;
+ sigandsets(¤t->blocked, ¤t->blocked, &these);
+ recalc_sigpending(current);
+ spin_unlock_irq(¤t->sigmask_lock);
+
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ if (uts)
+ timeout = (timespec_to_jiffies(&ts)
+ + (ts.tv_sec || ts.tv_nsec));
+
+ current->state = TASK_INTERRUPTIBLE;
+ timeout = schedule_timeout(timeout);
+
+ spin_lock_irq(¤t->sigmask_lock);
+ sig = dequeue_signal(&these, &info);
+ current->blocked = oldblocked;
+ recalc_sigpending(current);
+ }
+ spin_unlock_irq(¤t->sigmask_lock);
+
+ if (sig) {
+ ret = sig;
+ if (uinfo) {
+ if (copy_siginfo_to_user32(uinfo, &info))
+ ret = -EFAULT;
+ }
+ } else {
+ ret = -EAGAIN;
+ if (timeout)
+ ret = -EINTR;
+ }
+
+ return ret;
+}
+
+extern asmlinkage int
+sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
+
+asmlinkage int
+sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo)
+{
+ siginfo_t info;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (copy_from_user (&info, uinfo, 3*sizeof(int)) ||
+ copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE))
+ return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigqueueinfo(pid, sig, &info);
+ set_fs (old_fs);
+ return ret;
+}
+
+struct tms32 {
+ __kernel_clock_t32 tms_utime;
+ __kernel_clock_t32 tms_stime;
+ __kernel_clock_t32 tms_cutime;
+ __kernel_clock_t32 tms_cstime;
+};
+
+extern asmlinkage long sys_times(struct tms * tbuf);
+
+asmlinkage long sys32_times(struct tms32 *tbuf)
+{
+ struct tms t;
+ long ret;
+ mm_segment_t old_fs = get_fs ();
+ int err;
+
+ set_fs (KERNEL_DS);
+ ret = sys_times(tbuf ? &t : NULL);
+ set_fs (old_fs);
+ if (tbuf) {
+ err = put_user (t.tms_utime, &tbuf->tms_utime);
+ err |= __put_user (t.tms_stime, &tbuf->tms_stime);
+ err |= __put_user (t.tms_cutime, &tbuf->tms_cutime);
+ err |= __put_user (t.tms_cstime, &tbuf->tms_cstime);
+ if (err)
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+#define RLIM_INFINITY32 0x7fffffff
+#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
+
+struct rlimit32 {
+ u32 rlim_cur;
+ u32 rlim_max;
+};
+
+extern asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage int sys32_old_getrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_old_getrlimit(resource, &r);
+ set_fs (old_fs);
+ if (!ret) {
+ ret = put_user (RESOURCE32(r.rlim_cur), &rlim->rlim_cur);
+ ret |= __put_user (RESOURCE32(r.rlim_max), &rlim->rlim_max);
+ }
+ return ret;
+}
+
+extern asmlinkage int sys_setrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage int sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ if (resource >= RLIM_NLIMITS) return -EINVAL;
+ if (get_user (r.rlim_cur, &rlim->rlim_cur) ||
+ __get_user (r.rlim_max, &rlim->rlim_max))
+ return -EFAULT;
+ if (r.rlim_cur == RLIM_INFINITY32)
+ r.rlim_cur = RLIM_INFINITY;
+ if (r.rlim_max == RLIM_INFINITY32)
+ r.rlim_max = RLIM_INFINITY;
+ set_fs (KERNEL_DS);
+ ret = sys_setrlimit(resource, &r);
+ set_fs (old_fs);
+ return ret;
+}
+
+extern asmlinkage int sys_getrusage(int who, struct rusage *ru);
+
+asmlinkage int sys32_getrusage(int who, struct rusage32 *ru)
+{
+ struct rusage r;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getrusage(who, &r);
+ set_fs (old_fs);
+ if (put_rusage (ru, &r)) return -EFAULT;
+ return ret;
+}
+
+/* XXX This really belongs in some header file... -DaveM */
+#define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
+ 16 for IP, 16 for IPX,
+ 24 for IPv6,
+ about 80 for AX.25 */
+
+extern struct socket *sockfd_lookup(int fd, int *err);
+
+/* XXX This as well... */
+extern __inline__ void sockfd_put(struct socket *sock)
+{
+ fput(sock->file);
+}
+
+struct msghdr32 {
+ u32 msg_name;
+ int msg_namelen;
+ u32 msg_iov;
+ __kernel_size_t32 msg_iovlen;
+ u32 msg_control;
+ __kernel_size_t32 msg_controllen;
+ unsigned msg_flags;
+};
+
+struct cmsghdr32 {
+ __kernel_size_t32 cmsg_len;
+ int cmsg_level;
+ int cmsg_type;
+};
+
+/* Bleech... */
+#define __CMSG32_NXTHDR(ctl, len, cmsg, cmsglen) __cmsg32_nxthdr((ctl),(len),(cmsg),(cmsglen))
+#define CMSG32_NXTHDR(mhdr, cmsg, cmsglen) cmsg32_nxthdr((mhdr), (cmsg), (cmsglen))
+
+#define CMSG32_ALIGN(len) ( ((len)+sizeof(int)-1) & ~(sizeof(int)-1) )
+
+#define CMSG32_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG32_ALIGN(sizeof(struct cmsghdr32))))
+#define CMSG32_SPACE(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + CMSG32_ALIGN(len))
+#define CMSG32_LEN(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + (len))
+
+#define __CMSG32_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr32) ? \
+ (struct cmsghdr32 *)(ctl) : \
+ (struct cmsghdr32 *)NULL)
+#define CMSG32_FIRSTHDR(msg) __CMSG32_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
+
+__inline__ struct cmsghdr32 *__cmsg32_nxthdr(void *__ctl, __kernel_size_t __size,
+ struct cmsghdr32 *__cmsg, int __cmsg_len)
+{
+ struct cmsghdr32 * __ptr;
+
+ __ptr = (struct cmsghdr32 *)(((unsigned char *) __cmsg) +
+ CMSG32_ALIGN(__cmsg_len));
+ if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
+ return NULL;
+
+ return __ptr;
+}
+
+__inline__ struct cmsghdr32 *cmsg32_nxthdr (struct msghdr *__msg,
+ struct cmsghdr32 *__cmsg,
+ int __cmsg_len)
+{
+ return __cmsg32_nxthdr(__msg->msg_control, __msg->msg_controllen,
+ __cmsg, __cmsg_len);
+}
+
+static inline int iov_from_user32_to_kern(struct iovec *kiov,
+ struct iovec32 *uiov32,
+ int niov)
+{
+ int tot_len = 0;
+
+ while(niov > 0) {
+ u32 len, buf;
+
+ if(get_user(len, &uiov32->iov_len) ||
+ get_user(buf, &uiov32->iov_base)) {
+ tot_len = -EFAULT;
+ break;
+ }
+ tot_len += len;
+ kiov->iov_base = (void *)A(buf);
+ kiov->iov_len = (__kernel_size_t) len;
+ uiov32++;
+ kiov++;
+ niov--;
+ }
+ return tot_len;
+}
+
+static inline int msghdr_from_user32_to_kern(struct msghdr *kmsg,
+ struct msghdr32 *umsg)
+{
+ u32 tmp1, tmp2, tmp3;
+ int err;
+
+ err = get_user(tmp1, &umsg->msg_name);
+ err |= __get_user(tmp2, &umsg->msg_iov);
+ err |= __get_user(tmp3, &umsg->msg_control);
+ if (err)
+ return -EFAULT;
+
+ kmsg->msg_name = (void *)A(tmp1);
+ kmsg->msg_iov = (struct iovec *)A(tmp2);
+ kmsg->msg_control = (void *)A(tmp3);
+
+ err = get_user(kmsg->msg_namelen, &umsg->msg_namelen);
+ err |= get_user(kmsg->msg_iovlen, &umsg->msg_iovlen);
+ err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen);
+ err |= get_user(kmsg->msg_flags, &umsg->msg_flags);
+
+ return err;
+}
+
+/* I've named the args so it is easy to tell whose space the pointers are in. */
+static int verify_iovec32(struct msghdr *kern_msg, struct iovec *kern_iov,
+ char *kern_address, int mode)
+{
+ int tot_len;
+
+ if(kern_msg->msg_namelen) {
+ if(mode==VERIFY_READ) {
+ int err = move_addr_to_kernel(kern_msg->msg_name,
+ kern_msg->msg_namelen,
+ kern_address);
+ if(err < 0)
+ return err;
+ }
+ kern_msg->msg_name = kern_address;
+ } else
+ kern_msg->msg_name = NULL;
+
+ if(kern_msg->msg_iovlen > UIO_FASTIOV) {
+ kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec),
+ GFP_KERNEL);
+ if(!kern_iov)
+ return -ENOMEM;
+ }
+
+ tot_len = iov_from_user32_to_kern(kern_iov,
+ (struct iovec32 *)kern_msg->msg_iov,
+ kern_msg->msg_iovlen);
+ if(tot_len >= 0)
+ kern_msg->msg_iov = kern_iov;
+ else if(kern_msg->msg_iovlen > UIO_FASTIOV)
+ kfree(kern_iov);
+
+ return tot_len;
+}
+
+/* There is a lot of hair here because the alignment rules (and
+ * thus placement) of cmsg headers and length are different for
+ * 32-bit apps. -DaveM
+ */
+static int cmsghdr_from_user32_to_kern(struct msghdr *kmsg,
+ unsigned char *stackbuf, int stackbuf_size)
+{
+ struct cmsghdr32 *ucmsg;
+ struct cmsghdr *kcmsg, *kcmsg_base;
+ __kernel_size_t32 ucmlen;
+ __kernel_size_t kcmlen, tmp;
+
+ kcmlen = 0;
+ kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
+ ucmsg = CMSG32_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ if(get_user(ucmlen, &ucmsg->cmsg_len))
+ return -EFAULT;
+
+ /* Catch bogons. */
+ if(CMSG32_ALIGN(ucmlen) <
+ CMSG32_ALIGN(sizeof(struct cmsghdr32)))
+ return -EINVAL;
+ if((unsigned long)(((char *)ucmsg - (char *)kmsg->msg_control)
+ + ucmlen) > kmsg->msg_controllen)
+ return -EINVAL;
+
+ tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmlen += tmp;
+ ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+ }
+ if(kcmlen == 0)
+ return -EINVAL;
+
+ /* The kcmlen holds the 64-bit version of the control length.
+ * It may not be modified as we do not stick it into the kmsg
+ * until we have successfully copied over all of the data
+ * from the user.
+ */
+ if(kcmlen > stackbuf_size)
+ kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL);
+ if(kcmsg == NULL)
+ return -ENOBUFS;
+
+ /* Now copy them over neatly. */
+ memset(kcmsg, 0, kcmlen);
+ ucmsg = CMSG32_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ __get_user(ucmlen, &ucmsg->cmsg_len);
+ tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmsg->cmsg_len = tmp;
+ __get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level);
+ __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type);
+
+ /* Copy over the data. */
+ if(copy_from_user(CMSG_DATA(kcmsg),
+ CMSG32_DATA(ucmsg),
+ (ucmlen - CMSG32_ALIGN(sizeof(*ucmsg)))))
+ goto out_free_efault;
+
+ /* Advance. */
+ kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp));
+ ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+ }
+
+ /* Ok, looks like we made it. Hook it up and return success. */
+ kmsg->msg_control = kcmsg_base;
+ kmsg->msg_controllen = kcmlen;
+ return 0;
+
+out_free_efault:
+ if(kcmsg_base != (struct cmsghdr *)stackbuf)
+ kfree(kcmsg_base);
+ return -EFAULT;
+}
+
+static void put_cmsg32(struct msghdr *kmsg, int level, int type,
+ int len, void *data)
+{
+ struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+ struct cmsghdr32 cmhdr;
+ int cmlen = CMSG32_LEN(len);
+
+ if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ return;
+ }
+
+ if(kmsg->msg_controllen < cmlen) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ cmlen = kmsg->msg_controllen;
+ }
+ cmhdr.cmsg_level = level;
+ cmhdr.cmsg_type = type;
+ cmhdr.cmsg_len = cmlen;
+
+ if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
+ return;
+ if(copy_to_user(CMSG32_DATA(cm), data, cmlen - sizeof(struct cmsghdr32)))
+ return;
+ cmlen = CMSG32_SPACE(len);
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+}
+
+static void scm_detach_fds32(struct msghdr *kmsg, struct scm_cookie *scm)
+{
+ struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+ int fdmax = (kmsg->msg_controllen - sizeof(struct cmsghdr32)) / sizeof(int);
+ int fdnum = scm->fp->count;
+ struct file **fp = scm->fp->fp;
+ int *cmfptr;
+ int err = 0, i;
+
+ if (fdnum < fdmax)
+ fdmax = fdnum;
+
+ for (i = 0, cmfptr = (int *) CMSG32_DATA(cm); i < fdmax; i++, cmfptr++) {
+ int new_fd;
+ err = get_unused_fd();
+ if (err < 0)
+ break;
+ new_fd = err;
+ err = put_user(new_fd, cmfptr);
+ if (err) {
+ put_unused_fd(new_fd);
+ break;
+ }
+ /* Bump the usage count and install the file. */
+ get_file(fp[i]);
+ fd_install(new_fd, fp[i]);
+ }
+
+ if (i > 0) {
+ int cmlen = CMSG32_LEN(i * sizeof(int));
+ if (!err)
+ err = put_user(SOL_SOCKET, &cm->cmsg_level);
+ if (!err)
+ err = put_user(SCM_RIGHTS, &cm->cmsg_type);
+ if (!err)
+ err = put_user(cmlen, &cm->cmsg_len);
+ if (!err) {
+ cmlen = CMSG32_SPACE(i * sizeof(int));
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+ }
+ }
+ if (i < fdnum)
+ kmsg->msg_flags |= MSG_CTRUNC;
+
+ /*
+ * All of the files that fit in the message have had their
+ * usage counts incremented, so we just free the list.
+ */
+ __scm_destroy(scm);
+}
+
+/* In these cases we (currently) can just copy to data over verbatim
+ * because all CMSGs created by the kernel have well defined types which
+ * have the same layout in both the 32-bit and 64-bit API. One must add
+ * some special cased conversions here if we start sending control messages
+ * with incompatible types.
+ *
+ * SCM_RIGHTS and SCM_CREDENTIALS are done by hand in recvmsg32 right after
+ * we do our work. The remaining cases are:
+ *
+ * SOL_IP IP_PKTINFO struct in_pktinfo 32-bit clean
+ * IP_TTL int 32-bit clean
+ * IP_TOS __u8 32-bit clean
+ * IP_RECVOPTS variable length 32-bit clean
+ * IP_RETOPTS variable length 32-bit clean
+ * (these last two are clean because the types are defined
+ * by the IPv4 protocol)
+ * IP_RECVERR struct sock_extended_err +
+ * struct sockaddr_in 32-bit clean
+ * SOL_IPV6 IPV6_RECVERR struct sock_extended_err +
+ * struct sockaddr_in6 32-bit clean
+ * IPV6_PKTINFO struct in6_pktinfo 32-bit clean
+ * IPV6_HOPLIMIT int 32-bit clean
+ * IPV6_FLOWINFO u32 32-bit clean
+ * IPV6_HOPOPTS ipv6 hop exthdr 32-bit clean
+ * IPV6_DSTOPTS ipv6 dst exthdr(s) 32-bit clean
+ * IPV6_RTHDR ipv6 routing exthdr 32-bit clean
+ * IPV6_AUTHHDR ipv6 auth exthdr 32-bit clean
+ */
+static void cmsg32_recvmsg_fixup(struct msghdr *kmsg, unsigned long orig_cmsg_uptr)
+{
+ unsigned char *workbuf, *wp;
+ unsigned long bufsz, space_avail;
+ struct cmsghdr *ucmsg;
+
+ bufsz = ((unsigned long)kmsg->msg_control) - orig_cmsg_uptr;
+ space_avail = kmsg->msg_controllen + bufsz;
+ wp = workbuf = kmalloc(bufsz, GFP_KERNEL);
+ if(workbuf == NULL)
+ goto fail;
+
+ /* To make this more sane we assume the kernel sends back properly
+ * formatted control messages. Because of how the kernel will truncate
+ * the cmsg_len for MSG_TRUNC cases, we need not check that case either.
+ */
+ ucmsg = (struct cmsghdr *) orig_cmsg_uptr;
+ while(((unsigned long)ucmsg) <=
+ (((unsigned long)kmsg->msg_control) - sizeof(struct cmsghdr))) {
+ struct cmsghdr32 *kcmsg32 = (struct cmsghdr32 *) wp;
+ int clen64, clen32;
+
+ /* UCMSG is the 64-bit format CMSG entry in user-space.
+ * KCMSG32 is within the kernel space temporary buffer
+ * we use to convert into a 32-bit style CMSG.
+ */
+ __get_user(kcmsg32->cmsg_len, &ucmsg->cmsg_len);
+ __get_user(kcmsg32->cmsg_level, &ucmsg->cmsg_level);
+ __get_user(kcmsg32->cmsg_type, &ucmsg->cmsg_type);
+
+ clen64 = kcmsg32->cmsg_len;
+ copy_from_user(CMSG32_DATA(kcmsg32), CMSG_DATA(ucmsg),
+ clen64 - CMSG_ALIGN(sizeof(*ucmsg)));
+ clen32 = ((clen64 - CMSG_ALIGN(sizeof(*ucmsg))) +
+ CMSG32_ALIGN(sizeof(struct cmsghdr32)));
+ kcmsg32->cmsg_len = clen32;
+
+ ucmsg = (struct cmsghdr *) (((char *)ucmsg) + CMSG_ALIGN(clen64));
+ wp = (((char *)kcmsg32) + CMSG32_ALIGN(clen32));
+ }
+
+ /* Copy back fixed up data, and adjust pointers. */
+ bufsz = (wp - workbuf);
+ copy_to_user((void *)orig_cmsg_uptr, workbuf, bufsz);
+
+ kmsg->msg_control = (struct cmsghdr *)
+ (((char *)orig_cmsg_uptr) + bufsz);
+ kmsg->msg_controllen = space_avail - bufsz;
+
+ kfree(workbuf);
+ return;
+
+fail:
+ /* If we leave the 64-bit format CMSG chunks in there,
+ * the application could get confused and crash. So to
+ * ensure greater recovery, we report no CMSGs.
+ */
+ kmsg->msg_controllen += bufsz;
+ kmsg->msg_control = (void *) orig_cmsg_uptr;
+}
+
+asmlinkage int sys32_sendmsg(int fd, struct msghdr32 *user_msg, unsigned user_flags)
+{
+ struct socket *sock;
+ char address[MAX_SOCK_ADDR];
+ struct iovec iov[UIO_FASTIOV];
+ unsigned char ctl[sizeof(struct cmsghdr) + 20];
+ unsigned char *ctl_buf = ctl;
+ struct msghdr kern_msg;
+ int err, total_len;
+
+ if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+ return -EFAULT;
+ if(kern_msg.msg_iovlen > UIO_MAXIOV)
+ return -EINVAL;
+ err = verify_iovec32(&kern_msg, iov, address, VERIFY_READ);
+ if (err < 0)
+ goto out;
+ total_len = err;
+
+ if(kern_msg.msg_controllen) {
+ err = cmsghdr_from_user32_to_kern(&kern_msg, ctl, sizeof(ctl));
+ if(err)
+ goto out_freeiov;
+ ctl_buf = kern_msg.msg_control;
+ }
+ kern_msg.msg_flags = user_flags;
+
+ sock = sockfd_lookup(fd, &err);
+ if (sock != NULL) {
+ if (sock->file->f_flags & O_NONBLOCK)
+ kern_msg.msg_flags |= MSG_DONTWAIT;
+ err = sock_sendmsg(sock, &kern_msg, total_len);
+ sockfd_put(sock);
+ }
+
+ /* N.B. Use kfree here, as kern_msg.msg_controllen might change? */
+ if(ctl_buf != ctl)
+ kfree(ctl_buf);
+out_freeiov:
+ if(kern_msg.msg_iov != iov)
+ kfree(kern_msg.msg_iov);
+out:
+ return err;
+}
+
+asmlinkage int sys32_recvmsg(int fd, struct msghdr32 *user_msg, unsigned int user_flags)
+{
+ struct iovec iovstack[UIO_FASTIOV];
+ struct msghdr kern_msg;
+ char addr[MAX_SOCK_ADDR];
+ struct socket *sock;
+ struct iovec *iov = iovstack;
+ struct sockaddr *uaddr;
+ int *uaddr_len;
+ unsigned long cmsg_ptr;
+ int err, total_len, len = 0;
+
+ if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+ return -EFAULT;
+ if(kern_msg.msg_iovlen > UIO_MAXIOV)
+ return -EINVAL;
+
+ uaddr = kern_msg.msg_name;
+ uaddr_len = &user_msg->msg_namelen;
+ err = verify_iovec32(&kern_msg, iov, addr, VERIFY_WRITE);
+ if (err < 0)
+ goto out;
+ total_len = err;
+
+ cmsg_ptr = (unsigned long) kern_msg.msg_control;
+ kern_msg.msg_flags = 0;
+
+ sock = sockfd_lookup(fd, &err);
+ if (sock != NULL) {
+ struct scm_cookie scm;
+
+ if (sock->file->f_flags & O_NONBLOCK)
+ user_flags |= MSG_DONTWAIT;
+ memset(&scm, 0, sizeof(scm));
+ err = sock->ops->recvmsg(sock, &kern_msg, total_len,
+ user_flags, &scm);
+ if(err >= 0) {
+ len = err;
+ if(!kern_msg.msg_control) {
+ if(sock->passcred || scm.fp)
+ kern_msg.msg_flags |= MSG_CTRUNC;
+ if(scm.fp)
+ __scm_destroy(&scm);
+ } else {
+ /* If recvmsg processing itself placed some
+ * control messages into user space, it's is
+ * using 64-bit CMSG processing, so we need
+ * to fix it up before we tack on more stuff.
+ */
+ if((unsigned long) kern_msg.msg_control != cmsg_ptr)
+ cmsg32_recvmsg_fixup(&kern_msg, cmsg_ptr);
+
+ /* Wheee... */
+ if(sock->passcred)
+ put_cmsg32(&kern_msg,
+ SOL_SOCKET, SCM_CREDENTIALS,
+ sizeof(scm.creds), &scm.creds);
+ if(scm.fp != NULL)
+ scm_detach_fds32(&kern_msg, &scm);
+ }
+ }
+ sockfd_put(sock);
+ }
+
+ if(uaddr != NULL && err >= 0)
+ err = move_addr_to_user(addr, kern_msg.msg_namelen, uaddr, uaddr_len);
+ if(cmsg_ptr != 0 && err >= 0) {
+ unsigned long ucmsg_ptr = ((unsigned long)kern_msg.msg_control);
+ __kernel_size_t32 uclen = (__kernel_size_t32) (ucmsg_ptr - cmsg_ptr);
+ err |= __put_user(uclen, &user_msg->msg_controllen);
+ }
+ if(err >= 0)
+ err = __put_user(kern_msg.msg_flags, &user_msg->msg_flags);
+ if(kern_msg.msg_iov != iov)
+ kfree(kern_msg.msg_iov);
+out:
+ if(err < 0)
+ return err;
+ return len;
+}
+
+extern asmlinkage int sys_setsockopt(int fd, int level, int optname,
+ char *optval, int optlen);
+
+static int do_set_attach_filter(int fd, int level, int optname,
+ char *optval, int optlen)
+{
+ struct sock_fprog32 {
+ __u16 len;
+ __u32 filter;
+ } *fprog32 = (struct sock_fprog32 *)optval;
+ struct sock_fprog kfprog;
+ struct sock_filter *kfilter;
+ unsigned int fsize;
+ mm_segment_t old_fs;
+ __u32 uptr;
+ int ret;
+
+ if (get_user(kfprog.len, &fprog32->len) ||
+ __get_user(uptr, &fprog32->filter))
+ return -EFAULT;
+
+ kfprog.filter = (struct sock_filter *)A(uptr);
+ fsize = kfprog.len * sizeof(struct sock_filter);
+
+ kfilter = (struct sock_filter *)kmalloc(fsize, GFP_KERNEL);
+ if (kfilter == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(kfilter, kfprog.filter, fsize)) {
+ kfree(kfilter);
+ return -EFAULT;
+ }
+
+ kfprog.filter = kfilter;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_setsockopt(fd, level, optname,
+ (char *)&kfprog, sizeof(kfprog));
+ set_fs(old_fs);
+
+ kfree(kfilter);
+
+ return ret;
+}
+
+static int do_set_icmpv6_filter(int fd, int level, int optname,
+ char *optval, int optlen)
+{
+ struct icmp6_filter kfilter;
+ mm_segment_t old_fs;
+ int ret, i;
+
+ if (copy_from_user(&kfilter, optval, sizeof(kfilter)))
+ return -EFAULT;
+
+
+ for (i = 0; i < 8; i += 2) {
+ u32 tmp = kfilter.data[i];
+
+ kfilter.data[i] = kfilter.data[i + 1];
+ kfilter.data[i + 1] = tmp;
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_setsockopt(fd, level, optname,
+ (char *) &kfilter, sizeof(kfilter));
+ set_fs(old_fs);
+
+ return ret;
+}
+
+asmlinkage int sys32_setsockopt(int fd, int level, int optname,
+ char *optval, int optlen)
+{
+ if (optname == SO_ATTACH_FILTER)
+ return do_set_attach_filter(fd, level, optname,
+ optval, optlen);
+ if (level == SOL_ICMPV6 && optname == ICMPV6_FILTER)
+ return do_set_icmpv6_filter(fd, level, optname,
+ optval, optlen);
+
+ return sys_setsockopt(fd, level, optname, optval, optlen);
+}
+
+extern void check_pending(int signum);
+
+/*
+ * count32() counts the number of arguments/envelopes
+ */
+static int count32(u32 * argv)
+{
+ int i = 0;
+
+ if (argv != NULL) {
+ for (;;) {
+ u32 p; int error;
+
+ error = get_user(p,argv);
+ if (error) return error;
+ if (!p) break;
+ argv++; i++;
+ }
+ }
+ return i;
+}
+
+/*
+ * 'copy_string32()' copies argument/envelope strings from user
+ * memory to free pages in kernel mem. These are in a format ready
+ * to be put directly into the top of new user memory.
+ */
+static int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm)
+{
+ while (argc-- > 0) {
+ u32 str;
+ int len;
+ unsigned long pos;
+
+ if (get_user(str, argv + argc) ||
+ !str ||
+ !(len = strnlen_user((char *)A(str), bprm->p)))
+ return -EFAULT;
+
+ if (bprm->p < len)
+ return -E2BIG;
+
+ bprm->p -= len;
+
+ pos = bprm->p;
+ while (len) {
+ char *kaddr;
+ struct page *page;
+ int offset, bytes_to_copy, new, err;
+
+ offset = pos % PAGE_SIZE;
+ page = bprm->page[pos / PAGE_SIZE];
+ new = 0;
+ if (!page) {
+ page = alloc_page(GFP_USER);
+ bprm->page[pos / PAGE_SIZE] = page;
+ if (!page)
+ return -ENOMEM;
+ new = 1;
+ }
+ kaddr = (char *)kmap(page);
+
+ if (new && offset)
+ memset(kaddr, 0, offset);
+ bytes_to_copy = PAGE_SIZE - offset;
+ if (bytes_to_copy > len) {
+ bytes_to_copy = len;
+ if (new)
+ memset(kaddr+offset+len, 0,
+ PAGE_SIZE-offset-len);
+ }
+
+ err = copy_from_user(kaddr + offset, (char *)A(str),
+ bytes_to_copy);
+ flush_page_to_ram(page);
+ kunmap((unsigned long)kaddr);
+
+ if (err)
+ return -EFAULT;
+
+ pos += bytes_to_copy;
+ str += bytes_to_copy;
+ len -= bytes_to_copy;
+ }
+ }
+ return 0;
+}
+
+/*
+ * sys32_execve() executes a new program.
+ */
+static inline int
+do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
+{
+ struct linux_binprm bprm;
+ struct file * file;
+ int retval;
+ int i;
+
+ bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
+ memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0]));
+
+ file = open_exec(filename);
+
+ retval = PTR_ERR(file);
+ if (IS_ERR(file))
+ return retval;
+
+ bprm.file = file;
+ bprm.filename = filename;
+ bprm.sh_bang = 0;
+ bprm.loader = 0;
+ bprm.exec = 0;
+ if ((bprm.argc = count32(argv)) < 0) {
+ allow_write_access(file);
+ fput(file);
+ return bprm.argc;
+ }
+ if ((bprm.envc = count32(envp)) < 0) {
+ allow_write_access(file);
+ fput(file);
+ return bprm.envc;
+ }
+
+ retval = prepare_binprm(&bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = copy_strings_kernel(1, &bprm.filename, &bprm);
+ if (retval < 0)
+ goto out;
+
+ bprm.exec = bprm.p;
+ retval = copy_strings32(bprm.envc, envp, &bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = copy_strings32(bprm.argc, argv, &bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = search_binary_handler(&bprm, regs);
+ if (retval >= 0)
+ /* execve success */
+ return retval;
+
+out:
+ /* Something went wrong, return the inode and free the argument pages*/
+ allow_write_access(bprm.file);
+ if (bprm.file)
+ fput(bprm.file);
+
+ for (i=0 ; i<MAX_ARG_PAGES ; i++)
+ if (bprm.page[i])
+ __free_page(bprm.page[i]);
+
+ return retval;
+}
+
+/*
+ * sys32_execve() executes a new program after the asm stub has set
+ * things up for us. This should basically do what I want it to.
+ */
+asmlinkage int
+sys32_execve(struct pt_regs regs)
+{
+ int error;
+ char * filename;
+
+ filename = getname((char *)A(regs.orig_gpr2));
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ goto out;
+ error = do_execve32(filename, (u32 *)A(regs.gprs[3]), (u32 *)A(regs.gprs[4]), ®s);
+ if (error == 0)
+ {
+ current->ptrace &= ~PT_DTRACE;
+ current->thread.fp_regs.fpc=0;
+ __asm__ __volatile__
+ ("sr 0,0\n\t"
+ "sfpc 0,0\n\t"
+ : : :"0");
+ }
+ putname(filename);
+out:
+ return error;
+}
+
+
+#ifdef CONFIG_MODULES
+
+extern asmlinkage unsigned long sys_create_module(const char *name_user, size_t size);
+
+asmlinkage unsigned long sys32_create_module(const char *name_user, __kernel_size_t32 size)
+{
+ return sys_create_module(name_user, (size_t)size);
+}
+
+extern asmlinkage int sys_init_module(const char *name_user, struct module *mod_user);
+
+/* Hey, when you're trying to init module, take time and prepare us a nice 64bit
+ * module structure, even if from 32bit modutils... Why to pollute kernel... :))
+ */
+asmlinkage int sys32_init_module(const char *name_user, struct module *mod_user)
+{
+ return sys_init_module(name_user, mod_user);
+}
+
+extern asmlinkage int sys_delete_module(const char *name_user);
+
+asmlinkage int sys32_delete_module(const char *name_user)
+{
+ return sys_delete_module(name_user);
+}
+
+struct module_info32 {
+ u32 addr;
+ u32 size;
+ u32 flags;
+ s32 usecount;
+};
+
+/* Query various bits about modules. */
+
+static inline long
+get_mod_name(const char *user_name, char **buf)
+{
+ unsigned long page;
+ long retval;
+
+ if ((unsigned long)user_name >= TASK_SIZE
+ && !segment_eq(get_fs (), KERNEL_DS))
+ return -EFAULT;
+
+ page = __get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ retval = strncpy_from_user((char *)page, user_name, PAGE_SIZE);
+ if (retval > 0) {
+ if (retval < PAGE_SIZE) {
+ *buf = (char *)page;
+ return retval;
+ }
+ retval = -ENAMETOOLONG;
+ } else if (!retval)
+ retval = -EINVAL;
+
+ free_page(page);
+ return retval;
+}
+
+static inline void
+put_mod_name(char *buf)
+{
+ free_page((unsigned long)buf);
+}
+
+static __inline__ struct module *find_module(const char *name)
+{
+ struct module *mod;
+
+ for (mod = module_list; mod ; mod = mod->next) {
+ if (mod->flags & MOD_DELETED)
+ continue;
+ if (!strcmp(mod->name, name))
+ break;
+ }
+
+ return mod;
+}
+
+static int
+qm_modules(char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ struct module *mod;
+ size_t nmod, space, len;
+
+ nmod = space = 0;
+
+ for (mod = module_list; mod->next != NULL; mod = mod->next, ++nmod) {
+ len = strlen(mod->name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, mod->name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(nmod, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ space += len;
+ while ((mod = mod->next)->next != NULL)
+ space += strlen(mod->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static int
+qm_deps(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ size_t i, space, len;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+ if (!MOD_CAN_QUERY(mod))
+ return put_user(0, ret);
+
+ space = 0;
+ for (i = 0; i < mod->ndeps; ++i) {
+ const char *dep_name = mod->deps[i].dep->name;
+
+ len = strlen(dep_name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, dep_name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ return put_user(i, ret);
+
+calc_space_needed:
+ space += len;
+ while (++i < mod->ndeps)
+ space += strlen(mod->deps[i].dep->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static int
+qm_refs(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ size_t nrefs, space, len;
+ struct module_ref *ref;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+ if (!MOD_CAN_QUERY(mod))
+ if (put_user(0, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+ space = 0;
+ for (nrefs = 0, ref = mod->refs; ref ; ++nrefs, ref = ref->next_ref) {
+ const char *ref_name = ref->ref->name;
+
+ len = strlen(ref_name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, ref_name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(nrefs, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ space += len;
+ while ((ref = ref->next_ref) != NULL)
+ space += strlen(ref->ref->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static inline int
+qm_symbols(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ size_t i, space, len;
+ struct module_symbol *s;
+ char *strings;
+ unsigned *vals;
+
+ if (!MOD_CAN_QUERY(mod))
+ if (put_user(0, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+ space = mod->nsyms * 2*sizeof(u32);
+
+ i = len = 0;
+ s = mod->syms;
+
+ if (space > bufsize)
+ goto calc_space_needed;
+
+ if (!access_ok(VERIFY_WRITE, buf, space))
+ return -EFAULT;
+
+ bufsize -= space;
+ vals = (unsigned *)buf;
+ strings = buf+space;
+
+ for (; i < mod->nsyms ; ++i, ++s, vals += 2) {
+ len = strlen(s->name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+
+ if (copy_to_user(strings, s->name, len)
+ || __put_user(s->value, vals+0)
+ || __put_user(space, vals+1))
+ return -EFAULT;
+
+ strings += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(i, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ for (; i < mod->nsyms; ++i, ++s)
+ space += strlen(s->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static inline int
+qm_info(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ int error = 0;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+
+ if (sizeof(struct module_info32) <= bufsize) {
+ struct module_info32 info;
+ info.addr = (unsigned long)mod;
+ info.size = mod->size;
+ info.flags = mod->flags;
+ info.usecount =
+ ((mod_member_present(mod, can_unload)
+ && mod->can_unload)
+ ? -1 : atomic_read(&mod->uc.usecount));
+
+ if (copy_to_user(buf, &info, sizeof(struct module_info32)))
+ return -EFAULT;
+ } else
+ error = -ENOSPC;
+
+ if (put_user(sizeof(struct module_info32), ret))
+ return -EFAULT;
+
+ return error;
+}
+
+asmlinkage int sys32_query_module(char *name_user, int which, char *buf, __kernel_size_t32 bufsize, u32 ret)
+{
+ struct module *mod;
+ int err;
+
+ lock_kernel();
+ if (name_user == 0) {
+ /* This finds "kernel_module" which is not exported. */
+ for(mod = module_list; mod->next != NULL; mod = mod->next)
+ ;
+ } else {
+ long namelen;
+ char *name;
+
+ if ((namelen = get_mod_name(name_user, &name)) < 0) {
+ err = namelen;
+ goto out;
+ }
+ err = -ENOENT;
+ if (namelen == 0) {
+ /* This finds "kernel_module" which is not exported. */
+ for(mod = module_list; mod->next != NULL; mod = mod->next)
+ ;
+ } else if ((mod = find_module(name)) == NULL) {
+ put_mod_name(name);
+ goto out;
+ }
+ put_mod_name(name);
+ }
+
+ switch (which)
+ {
+ case 0:
+ err = 0;
+ break;
+ case QM_MODULES:
+ err = qm_modules(buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_DEPS:
+ err = qm_deps(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_REFS:
+ err = qm_refs(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_SYMBOLS:
+ err = qm_symbols(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_INFO:
+ err = qm_info(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+out:
+ unlock_kernel();
+ return err;
+}
+
+struct kernel_sym32 {
+ u32 value;
+ char name[60];
+};
+
+extern asmlinkage int sys_get_kernel_syms(struct kernel_sym *table);
+
+asmlinkage int sys32_get_kernel_syms(struct kernel_sym32 *table)
+{
+ int len, i;
+ struct kernel_sym *tbl;
+ mm_segment_t old_fs;
+
+ len = sys_get_kernel_syms(NULL);
+ if (!table) return len;
+ tbl = kmalloc (len * sizeof (struct kernel_sym), GFP_KERNEL);
+ if (!tbl) return -ENOMEM;
+ old_fs = get_fs();
+ set_fs (KERNEL_DS);
+ sys_get_kernel_syms(tbl);
+ set_fs (old_fs);
+ for (i = 0; i < len; i++, table += sizeof (struct kernel_sym32)) {
+ if (put_user (tbl[i].value, &table->value) ||
+ copy_to_user (table->name, tbl[i].name, 60))
+ break;
+ }
+ kfree (tbl);
+ return i;
+}
+
+#else /* CONFIG_MODULES */
+
+asmlinkage unsigned long
+sys32_create_module(const char *name_user, size_t size)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_init_module(const char *name_user, struct module *mod_user)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_delete_module(const char *name_user)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_query_module(const char *name_user, int which, char *buf, size_t bufsize,
+ size_t *ret)
+{
+ /* Let the program know about the new interface. Not that
+ it'll do them much good. */
+ if (which == 0)
+ return 0;
+
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_get_kernel_syms(struct kernel_sym *table)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_MODULES */
+
+/* Stuff for NFS server syscalls... */
+struct nfsctl_svc32 {
+ u16 svc32_port;
+ s32 svc32_nthreads;
+};
+
+struct nfsctl_client32 {
+ s8 cl32_ident[NFSCLNT_IDMAX+1];
+ s32 cl32_naddr;
+ struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
+ s32 cl32_fhkeytype;
+ s32 cl32_fhkeylen;
+ u8 cl32_fhkey[NFSCLNT_KEYMAX];
+};
+
+struct nfsctl_export32 {
+ s8 ex32_client[NFSCLNT_IDMAX+1];
+ s8 ex32_path[NFS_MAXPATHLEN+1];
+ __kernel_dev_t32 ex32_dev;
+ __kernel_ino_t32 ex32_ino;
+ s32 ex32_flags;
+ __kernel_uid_t32 ex32_anon_uid;
+ __kernel_gid_t32 ex32_anon_gid;
+};
+
+struct nfsctl_uidmap32 {
+ u32 ug32_ident; /* char * */
+ __kernel_uid_t32 ug32_uidbase;
+ s32 ug32_uidlen;
+ u32 ug32_udimap; /* uid_t * */
+ __kernel_uid_t32 ug32_gidbase;
+ s32 ug32_gidlen;
+ u32 ug32_gdimap; /* gid_t * */
+};
+
+struct nfsctl_fhparm32 {
+ struct sockaddr gf32_addr;
+ __kernel_dev_t32 gf32_dev;
+ __kernel_ino_t32 gf32_ino;
+ s32 gf32_version;
+};
+
+struct nfsctl_fdparm32 {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ s32 gd32_version;
+};
+
+struct nfsctl_fsparm32 {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ s32 gd32_maxlen;
+};
+
+struct nfsctl_arg32 {
+ s32 ca32_version; /* safeguard */
+ union {
+ struct nfsctl_svc32 u32_svc;
+ struct nfsctl_client32 u32_client;
+ struct nfsctl_export32 u32_export;
+ struct nfsctl_uidmap32 u32_umap;
+ struct nfsctl_fhparm32 u32_getfh;
+ struct nfsctl_fdparm32 u32_getfd;
+ struct nfsctl_fsparm32 u32_getfs;
+ } u;
+#define ca32_svc u.u32_svc
+#define ca32_client u.u32_client
+#define ca32_export u.u32_export
+#define ca32_umap u.u32_umap
+#define ca32_getfh u.u32_getfh
+#define ca32_getfd u.u32_getfd
+#define ca32_getfs u.u32_getfs
+#define ca32_authd u.u32_authd
+};
+
+union nfsctl_res32 {
+ __u8 cr32_getfh[NFS_FHSIZE];
+ struct knfsd_fh cr32_getfs;
+};
+
+static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
+ err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
+ return err;
+}
+
+static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_client.cl_ident[0],
+ &arg32->ca32_client.cl32_ident[0],
+ NFSCLNT_IDMAX);
+ err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
+ err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
+ &arg32->ca32_client.cl32_addrlist[0],
+ (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
+ err |= __get_user(karg->ca_client.cl_fhkeytype,
+ &arg32->ca32_client.cl32_fhkeytype);
+ err |= __get_user(karg->ca_client.cl_fhkeylen,
+ &arg32->ca32_client.cl32_fhkeylen);
+ err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
+ &arg32->ca32_client.cl32_fhkey[0],
+ NFSCLNT_KEYMAX);
+ return err;
+}
+
+static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_export.ex_client[0],
+ &arg32->ca32_export.ex32_client[0],
+ NFSCLNT_IDMAX);
+ err |= copy_from_user(&karg->ca_export.ex_path[0],
+ &arg32->ca32_export.ex32_path[0],
+ NFS_MAXPATHLEN);
+ err |= __get_user(karg->ca_export.ex_dev,
+ &arg32->ca32_export.ex32_dev);
+ err |= __get_user(karg->ca_export.ex_ino,
+ &arg32->ca32_export.ex32_ino);
+ err |= __get_user(karg->ca_export.ex_flags,
+ &arg32->ca32_export.ex32_flags);
+ err |= __get_user(karg->ca_export.ex_anon_uid,
+ &arg32->ca32_export.ex32_anon_uid);
+ err |= __get_user(karg->ca_export.ex_anon_gid,
+ &arg32->ca32_export.ex32_anon_gid);
+ karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
+ karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
+ return err;
+}
+
+static int nfs_uud32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ u32 uaddr;
+ int i;
+ int err;
+
+ memset(karg, 0, sizeof(*karg));
+ if(__get_user(karg->ca_version, &arg32->ca32_version))
+ return -EFAULT;
+ karg->ca_umap.ug_ident = (char *)get_free_page(GFP_USER);
+ if(!karg->ca_umap.ug_ident)
+ return -ENOMEM;
+ err = __get_user(uaddr, &arg32->ca32_umap.ug32_ident);
+ if(strncpy_from_user(karg->ca_umap.ug_ident,
+ (char *)A(uaddr), PAGE_SIZE) <= 0)
+ return -EFAULT;
+ err |= __get_user(karg->ca_umap.ug_uidbase,
+ &arg32->ca32_umap.ug32_uidbase);
+ err |= __get_user(karg->ca_umap.ug_uidlen,
+ &arg32->ca32_umap.ug32_uidlen);
+ err |= __get_user(uaddr, &arg32->ca32_umap.ug32_udimap);
+ if (err)
+ return -EFAULT;
+ karg->ca_umap.ug_udimap = kmalloc((sizeof(uid_t) * karg->ca_umap.ug_uidlen),
+ GFP_USER);
+ if(!karg->ca_umap.ug_udimap)
+ return -ENOMEM;
+ for(i = 0; i < karg->ca_umap.ug_uidlen; i++)
+ err |= __get_user(karg->ca_umap.ug_udimap[i],
+ &(((__kernel_uid_t32 *)A(uaddr))[i]));
+ err |= __get_user(karg->ca_umap.ug_gidbase,
+ &arg32->ca32_umap.ug32_gidbase);
+ err |= __get_user(karg->ca_umap.ug_uidlen,
+ &arg32->ca32_umap.ug32_gidlen);
+ err |= __get_user(uaddr, &arg32->ca32_umap.ug32_gdimap);
+ if (err)
+ return -EFAULT;
+ karg->ca_umap.ug_gdimap = kmalloc((sizeof(gid_t) * karg->ca_umap.ug_uidlen),
+ GFP_USER);
+ if(!karg->ca_umap.ug_gdimap)
+ return -ENOMEM;
+ for(i = 0; i < karg->ca_umap.ug_gidlen; i++)
+ err |= __get_user(karg->ca_umap.ug_gdimap[i],
+ &(((__kernel_gid_t32 *)A(uaddr))[i]));
+
+ return err;
+}
+
+static int nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfh.gf_addr,
+ &arg32->ca32_getfh.gf32_addr,
+ (sizeof(struct sockaddr)));
+ err |= __get_user(karg->ca_getfh.gf_dev,
+ &arg32->ca32_getfh.gf32_dev);
+ err |= __get_user(karg->ca_getfh.gf_ino,
+ &arg32->ca32_getfh.gf32_ino);
+ err |= __get_user(karg->ca_getfh.gf_version,
+ &arg32->ca32_getfh.gf32_version);
+ return err;
+}
+
+static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfd.gd_addr,
+ &arg32->ca32_getfd.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= copy_from_user(&karg->ca_getfd.gd_path,
+ &arg32->ca32_getfd.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= __get_user(karg->ca_getfd.gd_version,
+ &arg32->ca32_getfd.gd32_version);
+ return err;
+}
+
+static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = __get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfs.gd_addr,
+ &arg32->ca32_getfs.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= copy_from_user(&karg->ca_getfs.gd_path,
+ &arg32->ca32_getfs.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= __get_user(karg->ca_getfs.gd_maxlen,
+ &arg32->ca32_getfs.gd32_maxlen);
+ return err;
+}
+
+/* This really doesn't need translations, we are only passing
+ * back a union which contains opaque nfs file handle data.
+ */
+static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
+{
+ return copy_to_user(res32, kres, sizeof(*res32));
+}
+
+/*
+asmlinkage long sys_ni_syscall(void);
+*/
+
+int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
+{
+ struct nfsctl_arg *karg = NULL;
+ union nfsctl_res *kres = NULL;
+ mm_segment_t oldfs;
+ int err;
+
+ karg = kmalloc(sizeof(*karg), GFP_USER);
+ if(!karg)
+ return -ENOMEM;
+ if(res32) {
+ kres = kmalloc(sizeof(*kres), GFP_USER);
+ if(!kres) {
+ kfree(karg);
+ return -ENOMEM;
+ }
+ }
+ switch(cmd) {
+ case NFSCTL_SVC:
+ err = nfs_svc32_trans(karg, arg32);
+ break;
+ case NFSCTL_ADDCLIENT:
+ err = nfs_clnt32_trans(karg, arg32);
+ break;
+ case NFSCTL_DELCLIENT:
+ err = nfs_clnt32_trans(karg, arg32);
+ break;
+ case NFSCTL_EXPORT:
+ case NFSCTL_UNEXPORT:
+ err = nfs_exp32_trans(karg, arg32);
+ break;
+ /* This one is unimplemented, be we're ready for it. */
+ case NFSCTL_UGIDUPDATE:
+ err = nfs_uud32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFH:
+ err = nfs_getfh32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFD:
+ err = nfs_getfd32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFS:
+ err = nfs_getfs32_trans(karg, arg32);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ if(err)
+ goto done;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_nfsservctl(cmd, karg, kres);
+ set_fs(oldfs);
+
+ if (err)
+ goto done;
+
+ if((cmd == NFSCTL_GETFH) ||
+ (cmd == NFSCTL_GETFD) ||
+ (cmd == NFSCTL_GETFS))
+ err = nfs_getfh32_res_trans(kres, res32);
+
+done:
+ if(karg) {
+ if(cmd == NFSCTL_UGIDUPDATE) {
+ if(karg->ca_umap.ug_ident)
+ kfree(karg->ca_umap.ug_ident);
+ if(karg->ca_umap.ug_udimap)
+ kfree(karg->ca_umap.ug_udimap);
+ if(karg->ca_umap.ug_gdimap)
+ kfree(karg->ca_umap.ug_gdimap);
+ }
+ kfree(karg);
+ }
+ if(kres)
+ kfree(kres);
+ return err;
+}
+
+/* Translations due to time_t size differences. Which affects all
+ sorts of things, like timeval and itimerval. */
+
+extern struct timezone sys_tz;
+extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
+
+asmlinkage int sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz)
+{
+ if (tv) {
+ struct timeval ktv;
+ do_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+asmlinkage int sys32_settimeofday(struct timeval32 *tv, struct timezone *tz)
+{
+ struct timeval ktv;
+ struct timezone ktz;
+
+ if (tv) {
+ if (get_tv32(&ktv, tv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_from_user(&ktz, tz, sizeof(ktz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
+}
+
+extern int do_getitimer(int which, struct itimerval *value);
+
+asmlinkage int sys32_getitimer(int which, struct itimerval32 *it)
+{
+ struct itimerval kit;
+ int error;
+
+ error = do_getitimer(which, &kit);
+ if (!error && put_it32(it, &kit))
+ error = -EFAULT;
+
+ return error;
+}
+
+extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
+
+asmlinkage int sys32_setitimer(int which, struct itimerval32 *in, struct itimerval32 *out)
+{
+ struct itimerval kin, kout;
+ int error;
+
+ if (in) {
+ if (get_it32(&kin, in))
+ return -EFAULT;
+ } else
+ memset(&kin, 0, sizeof(kin));
+
+ error = do_setitimer(which, &kin, out ? &kout : NULL);
+ if (error || !out)
+ return error;
+ if (put_it32(out, &kout))
+ return -EFAULT;
+
+ return 0;
+
+}
+
+asmlinkage int sys_utimes(char *, struct timeval *);
+
+asmlinkage int sys32_utimes(char *filename, struct timeval32 *tvs)
+{
+ char *kfilename;
+ struct timeval ktvs[2];
+ mm_segment_t old_fs;
+ int ret;
+
+ kfilename = getname(filename);
+ ret = PTR_ERR(kfilename);
+ if (!IS_ERR(kfilename)) {
+ if (tvs) {
+ if (get_tv32(&ktvs[0], tvs) ||
+ get_tv32(&ktvs[1], 1+tvs))
+ return -EFAULT;
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_utimes(kfilename, &ktvs[0]);
+ set_fs(old_fs);
+
+ putname(kfilename);
+ }
+ return ret;
+}
+
+/* These are here just in case some old sparc32 binary calls it. */
+asmlinkage int sys32_pause(void)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ return -ERESTARTNOHAND;
+}
+
+extern asmlinkage int sys_prctl(int option, unsigned long arg2, unsigned long arg3,
+ unsigned long arg4, unsigned long arg5);
+
+asmlinkage int sys32_prctl(int option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
+{
+ return sys_prctl(option,
+ (unsigned long) arg2,
+ (unsigned long) arg3,
+ (unsigned long) arg4,
+ (unsigned long) arg5);
+}
+
+
+extern asmlinkage ssize_t sys_pread(unsigned int fd, char * buf,
+ size_t count, loff_t pos);
+
+extern asmlinkage ssize_t sys_pwrite(unsigned int fd, const char * buf,
+ size_t count, loff_t pos);
+
+typedef __kernel_ssize_t32 ssize_t32;
+
+asmlinkage ssize_t32 sys32_pread(unsigned int fd, char *ubuf,
+ __kernel_size_t32 count, u32 poshi, u32 poslo)
+{
+ return sys_pread(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+asmlinkage ssize_t32 sys32_pwrite(unsigned int fd, char *ubuf,
+ __kernel_size_t32 count, u32 poshi, u32 poslo)
+{
+ return sys_pwrite(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+
+extern asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
+
+asmlinkage int sys32_sendfile(int out_fd, int in_fd, __kernel_off_t32 *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 ? &of : NULL, count);
+ set_fs(old_fs);
+
+ if (!ret && offset && put_user(of, offset))
+ return -EFAULT;
+
+ return ret;
+}
+
+/* Handle adjtimex compatability. */
+
+struct timex32 {
+ u32 modes;
+ s32 offset, freq, maxerror, esterror;
+ s32 status, constant, precision, tolerance;
+ struct timeval32 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 *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if(get_user(txc.modes, &utp->modes) ||
+ __get_user(txc.offset, &utp->offset) ||
+ __get_user(txc.freq, &utp->freq) ||
+ __get_user(txc.maxerror, &utp->maxerror) ||
+ __get_user(txc.esterror, &utp->esterror) ||
+ __get_user(txc.status, &utp->status) ||
+ __get_user(txc.constant, &utp->constant) ||
+ __get_user(txc.precision, &utp->precision) ||
+ __get_user(txc.tolerance, &utp->tolerance) ||
+ __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __get_user(txc.tick, &utp->tick) ||
+ __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __get_user(txc.jitter, &utp->jitter) ||
+ __get_user(txc.shift, &utp->shift) ||
+ __get_user(txc.stabil, &utp->stabil) ||
+ __get_user(txc.jitcnt, &utp->jitcnt) ||
+ __get_user(txc.calcnt, &utp->calcnt) ||
+ __get_user(txc.errcnt, &utp->errcnt) ||
+ __get_user(txc.stbcnt, &utp->stbcnt))
+ return -EFAULT;
+
+ ret = do_adjtimex(&txc);
+
+ if(put_user(txc.modes, &utp->modes) ||
+ __put_user(txc.offset, &utp->offset) ||
+ __put_user(txc.freq, &utp->freq) ||
+ __put_user(txc.maxerror, &utp->maxerror) ||
+ __put_user(txc.esterror, &utp->esterror) ||
+ __put_user(txc.status, &utp->status) ||
+ __put_user(txc.constant, &utp->constant) ||
+ __put_user(txc.precision, &utp->precision) ||
+ __put_user(txc.tolerance, &utp->tolerance) ||
+ __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __put_user(txc.tick, &utp->tick) ||
+ __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __put_user(txc.jitter, &utp->jitter) ||
+ __put_user(txc.shift, &utp->shift) ||
+ __put_user(txc.stabil, &utp->stabil) ||
+ __put_user(txc.jitcnt, &utp->jitcnt) ||
+ __put_user(txc.calcnt, &utp->calcnt) ||
+ __put_user(txc.errcnt, &utp->errcnt) ||
+ __put_user(txc.stbcnt, &utp->stbcnt))
+ ret = -EFAULT;
+
+ return ret;
+}
+
+extern asmlinkage long sys_setpriority(int which, int who, int niceval);
+
+asmlinkage int sys_setpriority32(u32 which, u32 who, u32 niceval)
+{
+ return sys_setpriority((int) which,
+ (int) who,
+ (int) niceval);
+}
+
+struct __sysctl_args32 {
+ u32 name;
+ int nlen;
+ u32 oldval;
+ u32 oldlenp;
+ u32 newval;
+ u32 newlen;
+ u32 __unused[4];
+};
+
+extern asmlinkage long sys32_sysctl(struct __sysctl_args32 *args)
+{
+ struct __sysctl_args32 tmp;
+ int error;
+ size_t oldlen, *oldlenp = NULL;
+ unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
+
+ if (copy_from_user(&tmp, args, sizeof(tmp)))
+ return -EFAULT;
+
+ if (tmp.oldval && tmp.oldlenp) {
+ /* Duh, this is ugly and might not work if sysctl_args
+ is in read-only memory, but do_sysctl does indirectly
+ a lot of uaccess in both directions and we'd have to
+ basically copy the whole sysctl.c here, and
+ glibc's __sysctl uses rw memory for the structure
+ anyway. */
+ if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
+ put_user(oldlen, (size_t *)addr))
+ 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);
+ unlock_kernel();
+ if (oldlenp) {
+ if (!error) {
+ if (get_user(oldlen, (size_t *)addr) ||
+ put_user(oldlen, (u32 *)A(tmp.oldlenp)))
+ error = -EFAULT;
+ }
+ copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
+ }
+ return error;
+}
+
+struct stat64_emu31 {
+ unsigned short st_dev;
+ unsigned char __pad0[6];
+
+ long long st_ino;
+ unsigned int st_mode;
+ unsigned int st_nlink;
+
+ __u32 st_uid;
+ __u32 st_gid;
+
+ unsigned short st_rdev;
+ unsigned char __pad3[10];
+
+ long long st_size;
+ __u32 st_blksize;
+
+ __u32 st_blocks; /* Number 512-byte blocks allocated. */
+ __u32 __pad4; /* future possible st_blocks high bits */
+
+ __u32 st_atime;
+ __u32 __pad5;
+
+ __u32 st_mtime;
+ __u32 __pad6;
+
+ __u32 st_ctime;
+ __u32 __pad7; /* will be high 32 bits of ctime someday */
+
+ __u32 __unused1;
+ __u32 __unused2;
+};
+
+static inline int
+putstat64 (struct stat64_emu31 *ubuf, struct stat *kbuf)
+{
+ int err;
+
+ err = put_user (kbuf->st_dev, &ubuf->st_dev);
+ err |= __put_user (kbuf->st_ino, &ubuf->st_ino);
+ err |= __put_user (kbuf->st_mode, &ubuf->st_mode);
+ err |= __put_user (kbuf->st_nlink, &ubuf->st_nlink);
+ err |= __put_user (kbuf->st_uid, &ubuf->st_uid);
+ err |= __put_user (kbuf->st_gid, &ubuf->st_gid);
+ err |= __put_user (kbuf->st_rdev, &ubuf->st_rdev);
+ err |= __put_user (kbuf->st_size, &ubuf->st_size);
+ err |= __put_user (kbuf->st_blksize, &ubuf->st_blksize);
+ err |= __put_user (kbuf->st_blocks, &ubuf->st_blocks);
+ err |= __put_user (kbuf->st_atime, &ubuf->st_atime);
+ err |= __put_user (kbuf->st_mtime, &ubuf->st_mtime);
+ err |= __put_user (kbuf->st_ctime, &ubuf->st_ctime);
+ return err;
+}
+
+extern asmlinkage long sys_newstat(char * filename, struct stat * statbuf);
+
+asmlinkage long sys32_stat64(char * filename, struct stat64_emu31 * statbuf, long flags)
+{
+ int ret;
+ struct stat s;
+ char * tmp;
+ int err;
+ mm_segment_t old_fs = get_fs();
+
+ tmp = getname(filename);
+ err = PTR_ERR(tmp);
+ if (IS_ERR(tmp))
+ return err;
+
+ set_fs (KERNEL_DS);
+ ret = sys_newstat(tmp, &s);
+ set_fs (old_fs);
+ putname(tmp);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_newlstat(char * filename, struct stat * statbuf);
+
+asmlinkage long sys32_lstat64(char * filename, struct stat64_emu31 * statbuf, long flags)
+{
+ int ret;
+ struct stat s;
+ char * tmp;
+ int err;
+ mm_segment_t old_fs = get_fs();
+
+ tmp = getname(filename);
+ err = PTR_ERR(tmp);
+ if (IS_ERR(tmp))
+ return err;
+
+ set_fs (KERNEL_DS);
+ ret = sys_newstat(tmp, &s);
+ set_fs (old_fs);
+ putname(tmp);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf);
+
+asmlinkage long sys32_fstat64(unsigned long fd, struct stat64_emu31 * statbuf, long flags)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newfstat(fd, &s);
+ set_fs (old_fs);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+/*
+ * Linux/i386 didn't use to be able to handle more than
+ * 4 system call parameters, so these system calls used a memory
+ * block for parameter passing..
+ */
+
+struct mmap_arg_struct_emu31 {
+ u32 addr;
+ u32 len;
+ u32 prot;
+ u32 flags;
+ u32 fd;
+ u32 offset;
+};
+
+/* common code for old and new mmaps */
+static inline long do_mmap2(
+ unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ int error = -EBADF;
+ struct file * file = NULL;
+
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ if (!(flags & MAP_ANONYMOUS)) {
+ file = fget(fd);
+ if (!file)
+ goto out;
+ }
+
+ down(¤t->mm->mmap_sem);
+ error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+ up(¤t->mm->mmap_sem);
+
+ if (file)
+ fput(file);
+out:
+ return error;
+}
+
+
+asmlinkage unsigned long
+old32_mmap(struct mmap_arg_struct_emu31 *arg)
+{
+ struct mmap_arg_struct_emu31 a;
+ int error = -EFAULT;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ goto out;
+
+ error = -EINVAL;
+ if (a.offset & ~PAGE_MASK)
+ goto out;
+
+ error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+out:
+ return error;
+}
+
+asmlinkage long
+sys32_mmap2(struct mmap_arg_struct_emu31 *arg)
+{
+ struct mmap_arg_struct_emu31 a;
+ int error = -EFAULT;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ goto out;
+ error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
+out:
+ return error;
+}
+
+extern asmlinkage long sys_socket(int family, int type, int protocol);
+extern asmlinkage long sys_bind(int fd, struct sockaddr *umyaddr, int addrlen);
+extern asmlinkage long sys_connect(int fd, struct sockaddr *uservaddr, int addrlen);
+extern asmlinkage long sys_listen(int fd, int backlog);
+extern asmlinkage long sys_accept(int fd, struct sockaddr *upeer_sockaddr, int *upeer_addrlen);
+extern asmlinkage long sys_getsockname(int fd, struct sockaddr *usockaddr, int *usockaddr_len);
+extern asmlinkage long sys_getpeername(int fd, struct sockaddr *usockaddr, int *usockaddr_len);
+extern asmlinkage long sys_socketpair(int family, int type, int protocol, int usockvec[2]);
+extern asmlinkage long sys_send(int fd, void * buff, size_t len, unsigned flags);
+extern asmlinkage long sys_sendto(int fd, void * buff, size_t len, unsigned flags,
+ struct sockaddr *addr, int addr_len);
+extern asmlinkage long sys_recv(int fd, void * ubuf, size_t size, unsigned flags);
+extern asmlinkage long sys_recvfrom(int fd, void * ubuf, size_t size, unsigned flags,
+ struct sockaddr *addr, int *addr_len);
+extern asmlinkage long sys_shutdown(int fd, int how);
+extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char *optval, int * optlen);
+
+/* Argument list sizes for sys_socketcall */
+#define AL(x) ((x) * sizeof(u32))
+static unsigned char nas[18] = {AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+ AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+ AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
+#undef AL
+
+asmlinkage long sys32_socketcall(int call, u32 *args)
+{
+ int ret;
+ u32 a[6];
+
+ if (call < SYS_SOCKET || call > SYS_RECVMSG)
+ return -EINVAL;
+ if (copy_from_user(a, args, nas[call]))
+ return -EFAULT;
+ switch(call) {
+ case SYS_SOCKET:
+ ret = sys_socket(a[0], a[1], a[2]);
+ break;
+ case SYS_BIND:
+ ret = sys_bind(a[0], (struct sockaddr *) A(a[1]), a[2]);
+ break;
+ case SYS_CONNECT:
+ ret = sys_connect(a[0], (struct sockaddr *) A(a[1]), a[2]);
+ break;
+ case SYS_LISTEN:
+ ret = sys_listen(a[0], a[1]);
+ break;
+ case SYS_ACCEPT:
+ ret = sys_accept(a[0], (struct sockaddr *) A(a[1]),
+ (int *) A(a[2]));
+ break;
+ case SYS_GETSOCKNAME:
+ ret = sys_getsockname(a[0], (struct sockaddr *) A(a[1]),
+ (int *) A(a[2]));
+ break;
+ case SYS_GETPEERNAME:
+ ret = sys_getpeername(a[0], (struct sockaddr *) A(a[1]),
+ (int *) A(a[2]));
+ break;
+ case SYS_SOCKETPAIR:
+ ret = sys_socketpair(a[0], a[1], a[2], (int *) A(a[3]));
+ break;
+ case SYS_SEND:
+ ret = sys_send(a[0], (void *) A(a[1]), a[2], a[3]);
+ break;
+ case SYS_SENDTO:
+ ret = sys_sendto(a[0], (void*) A(a[1]), a[2], a[3], (struct sockaddr *) A(a[4]), a[5]);
+ break;
+ case SYS_RECV:
+ ret = sys_recv(a[0], (void *) A(a[1]), a[2], a[3]);
+ break;
+ case SYS_RECVFROM:
+ ret = sys_recvfrom(a[0], (void *) A(a[1]), a[2], a[3], (struct sockaddr *) A(a[4]), (int *) A(a[5]) );
+ break;
+ case SYS_SHUTDOWN:
+ ret = sys_shutdown(a[0], a[1]);
+ break;
+ case SYS_SETSOCKOPT:
+ ret = sys32_setsockopt(a[0], a[1], a[2], (char *) A(a[3]),
+ a[4]);
+ break;
+ case SYS_GETSOCKOPT:
+ ret = sys_getsockopt(a[0], a[1], a[2], (char *) A(a[3]), (int *) A(a[4]) );
+ break;
+ case SYS_SENDMSG:
+ ret = sys32_sendmsg(a[0], (struct msghdr32 *) A(a[1]),
+ a[2]);
+ break;
+ case SYS_RECVMSG:
+ ret = sys32_recvmsg(a[0], (struct msghdr32 *) A(a[1]),
+ a[2]);
+ break;
+ default:
+ ret = EINVAL;
+ break;
+ }
+ return ret;
+}
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)