sys_sparc32.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:107k
- /* $Id: sys_sparc32.c,v 1.182 2001/10/18 09:06:36 davem Exp $
- * sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
- *
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * environment.
- */
- #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/slab.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/fpumacro.h>
- #include <asm/semaphore.h>
- #include <net/scm.h>
- /* Use this to get at 32-bit user passed pointers. */
- /* Things to consider: the low-level assembly stub does
- srl x, 0, x for first four arguments, so if you have
- pointer to something in the first four arguments, just
- declare it as a pointer, not u32. On the other side,
- arguments from 5th onwards should be declared as u32
- for pointers, and need AA() around each usage.
- A() macro should be used for places where you e.g.
- have some internal variable u32 and just want to get
- rid of a compiler warning. AA() has to be used in
- places where you want to convert a function argument
- to 32bit pointer or when you e.g. access pt_regs
- structure and want to consider 32bit registers only.
- -jj
- */
- #define A(__x) ((unsigned long)(__x))
- #define AA(__x)
- ({ unsigned long __ret;
- __asm__ ("srl %0, 0, %0"
- : "=r" (__ret)
- : "0" (__x));
- __ret;
- })
- 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)));
- }
- extern asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on);
- asmlinkage int sys32_ioperm(u32 from, u32 num, int on)
- {
- return sys_ioperm((unsigned long)from, (unsigned long)num, on);
- }
- 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 = copy_to_user (&usp->sem_perm, &s.sem_perm, sizeof(struct ipc64_perm) + 2*sizeof(time_t));
- 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 *uipck = (struct ipc_kludge *)uptr;
- struct ipc_kludge ipck;
- err = -EINVAL;
- if (!uptr)
- goto out;
- err = -EFAULT;
- if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge)))
- 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 = copy_to_user(&up->msg_perm, &m.msg_perm, sizeof(struct ipc64_perm) + 3*sizeof(time_t));
- 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 = copy_to_user (&up->shm_perm, &s.shm_perm, sizeof(struct ipc64_perm) + 3*sizeof(time_t));
- 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 (high2lowuid(s.shm_perm.gid), &up->shm_perm.gid);
- err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid);
- err2 |= __put_user (high2lowuid(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 (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, fifth, 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 (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 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,
- loff_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, loff_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
- }
- 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 news, *n = &news;
- 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);
- memcpy(raw_data, n, sizeof(struct ncp_mount_data));
- 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 news, *s = &news;
- 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;
- memcpy(raw_data, s, sizeof(struct smb_mount_data));
- 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;
- }
- 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 int sys_getrlimit(unsigned int resource, struct rlimit *rlim);
- asmlinkage int sys32_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_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);
- asmlinkage int sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
- {
- struct k_sigaction new_ka, old_ka;
- int ret;
- if(sig < 0) {
- current->thread.flags |= SPARC_FLAG_NEWSIGNALS;
- sig = -sig;
- }
- if (act) {
- old_sigset_t32 mask;
-
- ret = get_user((long)new_ka.sa.sa_handler, &act->sa_handler);
- ret |= __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer);
- ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- ret |= __get_user(mask, &act->sa_mask);
- if (ret)
- return ret;
- new_ka.ka_restorer = NULL;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
- if (!ret && oact) {
- ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
- ret |= __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer);
- ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
- return ret;
- }
- asmlinkage int
- sys32_rt_sigaction(int sig, struct sigaction32 *act, struct sigaction32 *oact,
- void *restorer, __kernel_size_t32 sigsetsize)
- {
- struct k_sigaction new_ka, old_ka;
- int ret;
- sigset_t32 set32;
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t32))
- return -EINVAL;
- /* All tasks which use RT signals (effectively) use
- * new style signals.
- */
- current->thread.flags |= SPARC_FLAG_NEWSIGNALS;
- if (act) {
- new_ka.ka_restorer = restorer;
- ret = get_user((long)new_ka.sa.sa_handler, &act->sa_handler);
- ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(sigset_t32));
- switch (_NSIG_WORDS) {
- case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
- case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
- case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
- case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
- }
- ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- ret |= __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer);
- if (ret)
- return -EFAULT;
- }
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
- if (!ret && oact) {
- switch (_NSIG_WORDS) {
- case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
- case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
- case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
- case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
- }
- ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
- ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(sigset_t32));
- ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- ret |= __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer);
- }
- return ret;
- }
- /*
- * count32() counts the number of arguments/envelopes
- */
- static int count32(u32 * argv, int max)
- {
- int i = 0;
- if (argv != NULL) {
- for (;;) {
- u32 p; int error;
- error = get_user(p,argv);
- if (error)
- return error;
- if (!p)
- break;
- argv++;
- if (++i > max)
- return -E2BIG;
- }
- }
- 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 = 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);
- kunmap(page);
- 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, bprm.p / sizeof(u32))) < 0) {
- allow_write_access(file);
- fput(file);
- return bprm.argc;
- }
- if ((bprm.envc = count32(envp, bprm.p / sizeof(u32))) < 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;
- }
- /*
- * sparc32_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 sparc32_execve(struct pt_regs *regs)
- {
- int error, base = 0;
- char *filename;
- /* User register window flush is done by entry.S */
- /* Check for indirect call. */
- if((u32)regs->u_regs[UREG_G1] == 0)
- base = 1;
- filename = getname((char *)AA(regs->u_regs[base + UREG_I0]));
- error = PTR_ERR(filename);
- if(IS_ERR(filename))
- goto out;
- error = do_execve32(filename,
- (u32 *)AA((u32)regs->u_regs[base + UREG_I1]),
- (u32 *)AA((u32)regs->u_regs[base + UREG_I2]), regs);
- putname(filename);
- if(!error) {
- fprs_write(0);
- current->thread.xfsr[0] = 0;
- current->thread.fpsaved[0] = 0;
- regs->tstate &= ~TSTATE_PEF;
- }
- 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++) {
- 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 */
- #if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
- /* 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));
- }
- 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;
- }
- #else /* !NFSD */
- extern asmlinkage long sys_ni_syscall(void);
- int asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
- {
- return sys_ni_syscall();
- }
- #endif
- /* 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;
- }
- /* PCI config space poking. */
- extern asmlinkage int sys_pciconfig_read(unsigned long bus,
- unsigned long dfn,
- unsigned long off,
- unsigned long len,
- unsigned char *buf);
- extern asmlinkage int sys_pciconfig_write(unsigned long bus,
- unsigned long dfn,
- unsigned long off,
- unsigned long len,
- unsigned char *buf);
- asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
- {
- return sys_pciconfig_read((unsigned long) bus,
- (unsigned long) dfn,
- (unsigned long) off,
- (unsigned long) len,
- (unsigned char *)AA(ubuf));
- }
- asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
- {
- return sys_pciconfig_write((unsigned long) bus,
- (unsigned long) dfn,
- (unsigned long) off,
- (unsigned long) len,
- (unsigned char *)AA(ubuf));
- }
- 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_readahead(int fd, loff_t offset, size_t count);
- asmlinkage ssize_t32 sys32_readahead(int fd, u32 offhi, u32 offlo, s32 count)
- {
- return sys_readahead(fd, ((loff_t)AA(offhi) << 32) | AA(offlo), count);
- }
- 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 (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;
- }
- /* This is just a version for 32-bit applications which does
- * not force O_LARGEFILE on.
- */
- asmlinkage long sparc32_open(const char * filename, int flags, int mode)
- {
- char * tmp;
- int fd, error;
- tmp = getname(filename);
- fd = PTR_ERR(tmp);
- if (!IS_ERR(tmp)) {
- fd = get_unused_fd();
- if (fd >= 0) {
- struct file * f = filp_open(tmp, flags, mode);
- error = PTR_ERR(f);
- if (IS_ERR(f))
- goto out_error;
- fd_install(fd, f);
- }
- out:
- putname(tmp);
- }
- return fd;
- out_error:
- put_unused_fd(fd);
- fd = error;
- goto out;
- }
- extern unsigned long do_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr);
-
- asmlinkage unsigned long sys32_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, u32 __new_addr)
- {
- struct vm_area_struct *vma;
- unsigned long ret = -EINVAL;
- unsigned long new_addr = AA(__new_addr);
- if (old_len > 0xf0000000UL || new_len > 0xf0000000UL)
- goto out;
- if (addr > 0xf0000000UL - old_len)
- goto out;
- down_write(¤t->mm->mmap_sem);
- if (flags & MREMAP_FIXED) {
- if (new_addr > 0xf0000000UL - new_len)
- goto out_sem;
- } else if (addr > 0xf0000000UL - new_len) {
- unsigned long map_flags = 0;
- struct file *file = NULL;
- ret = -ENOMEM;
- if (!(flags & MREMAP_MAYMOVE))
- goto out_sem;
- vma = find_vma(current->mm, addr);
- if (vma) {
- if (vma->vm_flags & VM_SHARED)
- map_flags |= MAP_SHARED;
- file = vma->vm_file;
- }
- /* MREMAP_FIXED checked above. */
- new_addr = get_unmapped_area(file, addr, new_len,
- vma ? vma->vm_pgoff : 0,
- map_flags);
- ret = new_addr;
- if (new_addr & ~PAGE_MASK)
- goto out_sem;
- flags |= MREMAP_FIXED;
- }
- ret = do_mremap(addr, old_len, new_len, flags, new_addr);
- out_sem:
- up_write(¤t->mm->mmap_sem);
- out:
- 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;
- }