From: Arnd Bergmann Adds a generic implementation of 32 bit emulation for IPC system calls. The code is based on the existing implementations for sparc64, ia64, mips, s390, ppc and x86_64, which can subsequently be converted to use this. --- 25-akpm/arch/ia64/Kconfig | 6 25-akpm/arch/ia64/ia32/sys_ia32.c | 605 -------------------------- 25-akpm/arch/s390/Kconfig | 5 25-akpm/arch/s390/kernel/compat_linux.c | 609 +------------------------- 25-akpm/arch/x86_64/Kconfig | 4 25-akpm/arch/x86_64/ia32/ipc32.c | 675 ----------------------------- 25-akpm/include/asm-ia64/compat.h | 59 ++ 25-akpm/include/asm-s390/compat.h | 60 ++ 25-akpm/include/asm-x86_64/compat.h | 59 ++ 25-akpm/include/linux/compat.h | 11 25-akpm/ipc/Makefile | 1 25-akpm/ipc/compat.c | 734 ++++++++++++++++++++++++++++++++ include/linux/msg.h | 0 13 files changed, 994 insertions(+), 1834 deletions(-) diff -puN include/linux/compat.h~compat-generic-ipc-emulation include/linux/compat.h --- 25/include/linux/compat.h~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/include/linux/compat.h Mon Mar 1 14:47:36 2004 @@ -15,6 +15,7 @@ #include #include /* for HZ */ +#include #include /* Conditional process compat */ #include @@ -94,5 +95,15 @@ struct compat_dirent { char d_name[256]; }; +long compat_sys_semctl(int first, int second, int third, void __user *uptr); +long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); +long compat_sys_msgrcv(int first, int second, int msgtyp, int third, + int version, void __user *uptr); +long compat_sys_msgctl(int first, int second, void __user *uptr); +long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, + void __user *uptr); +long compat_sys_shmctl(int first, int second, void __user *uptr); +long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned nsems, const struct compat_timespec __user *timeout); #endif /* CONFIG_COMPAT */ #endif /* _LINUX_COMPAT_H */ diff -puN /dev/null ipc/compat.c --- /dev/null Thu Apr 11 07:25:15 2002 +++ 25-akpm/ipc/compat.c Mon Mar 1 14:47:36 2004 @@ -0,0 +1,734 @@ +/* + * 32 bit compatibility code for System V IPC + * + * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1999 Arun Sharma + * Copyright (C) 2000 VA Linux Co + * Copyright (C) 2000 Don Dugger + * Copyright (C) 2000 Hewlett-Packard Co. + * Copyright (C) 2000 David Mosberger-Tang + * Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com) + * Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port) + * Copyright (C) 2000 Silicon Graphics, Inc. + * Copyright (C) 2001 IBM + * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de) + * + * This code is collected from the versions for sparc64, mips64, s390x, ia64, + * ppc64 and x86_64, all of which are based on the original sparc64 version + * by Jakub Jelinek. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "util.h" + +struct compat_msgbuf { + compat_long_t mtype; + char mtext[1]; +}; + +struct compat_ipc_perm { + key_t key; + compat_uid_t uid; + compat_gid_t gid; + compat_uid_t cuid; + compat_gid_t cgid; + compat_mode_t mode; + unsigned short seq; +}; + +struct compat_semid_ds { + struct compat_ipc_perm sem_perm; + compat_time_t sem_otime; + compat_time_t sem_ctime; + compat_uptr_t sem_base; + compat_uptr_t sem_pending; + compat_uptr_t sem_pending_last; + compat_uptr_t undo; + unsigned short sem_nsems; +}; + +struct compat_msqid_ds { + struct compat_ipc_perm msg_perm; + compat_uptr_t msg_first; + compat_uptr_t msg_last; + compat_time_t msg_stime; + compat_time_t msg_rtime; + compat_time_t msg_ctime; + compat_ulong_t msg_lcbytes; + compat_ulong_t msg_lqbytes; + unsigned short msg_cbytes; + unsigned short msg_qnum; + unsigned short msg_qbytes; + compat_ipc_pid_t msg_lspid; + compat_ipc_pid_t msg_lrpid; +}; + +struct compat_shmid_ds { + struct compat_ipc_perm shm_perm; + int shm_segsz; + compat_time_t shm_atime; + compat_time_t shm_dtime; + compat_time_t shm_ctime; + compat_ipc_pid_t shm_cpid; + compat_ipc_pid_t shm_lpid; + unsigned short shm_nattch; + unsigned short shm_unused; + compat_uptr_t shm_unused2; + compat_uptr_t shm_unused3; +}; + +struct compat_ipc_kludge { + compat_uptr_t msgp; + compat_long_t msgtyp; +}; + +struct compat_shminfo64 { + compat_ulong_t shmmax; + compat_ulong_t shmmin; + compat_ulong_t shmmni; + compat_ulong_t shmseg; + compat_ulong_t shmall; + compat_ulong_t __unused1; + compat_ulong_t __unused2; + compat_ulong_t __unused3; + compat_ulong_t __unused4; +}; + +struct compat_shm_info { + compat_int_t used_ids; + compat_ulong_t shm_tot, shm_rss, shm_swp; + compat_ulong_t swap_attempts, swap_successes; +}; + +extern int sem_ctls[]; +#define sc_semopm (sem_ctls[2]) +#define MAXBUF (64*1024) + +static inline int compat_ipc_parse_version(int *cmd) +{ + int version = *cmd & IPC_64; + + /* this is tricky: architectures that have support for the old + * ipc structures in 64 bit binaries need to have IPC_64 set + * in cmd, the others need to have it cleared */ +#ifndef ipc_parse_version + *cmd |= IPC_64; +#else + *cmd &= ~IPC_64; +#endif + return version; +} + +static inline int __get_compat_ipc64_perm(struct ipc64_perm *p64, + struct compat_ipc64_perm *up64) +{ + int err; + + err = __get_user(p64->uid, &up64->uid); + err |= __get_user(p64->gid, &up64->gid); + err |= __get_user(p64->mode, &up64->mode); + return err; +} + +static inline int __get_compat_ipc_perm(struct ipc64_perm *p, + struct compat_ipc_perm *up) +{ + int err; + + err = __get_user(p->uid, &up->uid); + err |= __get_user(p->gid, &up->gid); + err |= __get_user(p->mode, &up->mode); + return err; +} + +static inline int __put_compat_ipc64_perm(struct ipc64_perm *p64, + struct compat_ipc64_perm *up64) +{ + int err; + + err = __put_user(p64->key, &up64->key); + err |= __put_user(p64->uid, &up64->uid); + err |= __put_user(p64->gid, &up64->gid); + err |= __put_user(p64->cuid, &up64->cuid); + err |= __put_user(p64->cgid, &up64->cgid); + err |= __put_user(p64->mode, &up64->mode); + err |= __put_user(p64->seq, &up64->seq); + return err; +} + +static inline int __put_compat_ipc_perm(struct ipc64_perm *p, + struct compat_ipc_perm *up) +{ + int err; + compat_uid_t u; + compat_gid_t g; + + err = __put_user(p->key, &up->key); + SET_UID(u, p->uid); + err |= __put_user(u, &up->uid); + SET_GID(g, p->gid); + err |= __put_user(g, &up->gid); + SET_UID(u, p->cuid); + err |= __put_user(u, &up->cuid); + SET_GID(g, p->cgid); + err |= __put_user(g, &up->cgid); + err |= __put_user(p->mode, &up->mode); + err |= __put_user(p->seq, &up->seq); + return err; +} + +static inline int get_compat_semid64_ds(struct semid64_ds *s64, + struct compat_semid64_ds *up64) +{ + if (!access_ok (VERIFY_READ, up64, sizeof(*up64))) + return -EFAULT; + return __get_compat_ipc64_perm(&s64->sem_perm, &up64->sem_perm); +} + +static inline int get_compat_semid_ds(struct semid64_ds *s, + struct compat_semid_ds *up) +{ + if (!access_ok (VERIFY_READ, up, sizeof(*up))) + return -EFAULT; + return __get_compat_ipc_perm(&s->sem_perm, &up->sem_perm); +} + +static inline int put_compat_semid64_ds(struct semid64_ds *s64, + struct compat_semid64_ds *up64) +{ + int err; + + if (!access_ok (VERIFY_WRITE, up64, sizeof(*up64))) + return -EFAULT; + err = __put_compat_ipc64_perm(&s64->sem_perm, &up64->sem_perm); + err |= __put_user(s64->sem_otime, &up64->sem_otime); + err |= __put_user(s64->sem_ctime, &up64->sem_ctime); + err |= __put_user(s64->sem_nsems, &up64->sem_nsems); + return err; +} + +static inline int put_compat_semid_ds(struct semid64_ds *s, + struct compat_semid_ds *up) +{ + int err; + + if (!access_ok (VERIFY_WRITE, up, sizeof(*up))) + err = -EFAULT; + err = __put_compat_ipc_perm(&s->sem_perm, &up->sem_perm); + err |= __put_user(s->sem_otime, &up->sem_otime); + err |= __put_user(s->sem_ctime, &up->sem_ctime); + err |= __put_user(s->sem_nsems, &up->sem_nsems); + return err; +} + +static inline int do_semctl(int semid, int semnum, int cmd, union semun arg) +{ + mm_segment_t old_fs; + int err; + + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = sys_semctl(semid, semnum, cmd, arg); + set_fs(old_fs); + + return err; +} +long compat_sys_semctl(int first, int second, int third, void __user *uptr) +{ + union semun fourth; + u32 pad; + int err, err2; + struct semid64_ds s64; + int version = compat_ipc_parse_version(&third); + + if (!uptr) + return -EINVAL; + if (get_user(pad, (u32 __user *) uptr)) + return -EFAULT; + if ((third & (~IPC_64)) == SETVAL) + fourth.val = (int) pad; + else + fourth.__pad = compat_ptr(pad); + switch (third & (~IPC_64)) { + case IPC_INFO: + case IPC_RMID: + case SEM_INFO: + case GETVAL: + case GETPID: + case GETNCNT: + case GETZCNT: + case GETALL: + case SETVAL: + case SETALL: + err = sys_semctl(first, second, third, fourth); + break; + + case IPC_STAT: + case SEM_STAT: + fourth.__pad = &s64; + err = do_semctl(first, second, third, fourth); + if (err < 0) + break; + + if (version == IPC_64) { + err2 = put_compat_semid64_ds(&s64, compat_ptr(pad)); + } else { + err2 = put_compat_semid_ds(&s64, compat_ptr(pad)); + } + if (err2) + err = -EFAULT; + break; + + case IPC_SET: + if (version == IPC_64) { + err = get_compat_semid64_ds(&s64, compat_ptr(pad)); + } else { + err = get_compat_semid_ds(&s64, compat_ptr(pad)); + } + if (err) + break; + + fourth.__pad = &s64; + err = do_semctl(first, second, third, fourth); + break; + + default: + err = -EINVAL; + break; + } + return err; +} + +long compat_sys_msgsnd(int first, int second, int third, void __user *uptr) +{ + struct msgbuf *p; + struct compat_msgbuf __user *up; + mm_segment_t old_fs; + int err; + + if (first < 0) + return -EINVAL; + if (second < 0 || (second >= MAXBUF - sizeof(struct msgbuf))) + return -EINVAL; + + p = kmalloc(second + sizeof(struct msgbuf), GFP_USER); + if (!p) + return -ENOMEM; + err = -EFAULT; + up = uptr; + if (get_user(p->mtype, &up->mtype) || + copy_from_user(p->mtext, &up->mtext, second)) + 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; +} + +long compat_sys_msgrcv(int first, int second, int msgtyp, int third, + int version, void __user *uptr) +{ + struct msgbuf *p; + struct compat_msgbuf __user *up; + mm_segment_t old_fs; + int err; + + if (first < 0) + return -EINVAL; + if (second < 0 || (second >= MAXBUF - sizeof(struct msgbuf))) + return -EINVAL; + + if (!version) { + struct compat_ipc_kludge __user *uipck = uptr; + struct compat_ipc_kludge ipck; + + err = -EINVAL; + if (!uptr) + goto out; + err = -EFAULT; + if (copy_from_user (&ipck, uipck, sizeof(ipck))) + goto out; + uptr = compat_ptr(ipck.msgp); + msgtyp = ipck.msgtyp; + } + err = -ENOMEM; + p = kmalloc(second + sizeof(struct msgbuf), GFP_USER); + if (!p) + goto out; + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = sys_msgrcv(first, p, second, msgtyp, third); + set_fs(old_fs); + if (err < 0) + goto free_then_out; + up = 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 inline int get_compat_msqid64(struct msqid64_ds *m64, + struct compat_msqid64_ds __user *up64) +{ + int err; + + if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) + return -EFAULT; + err = __get_compat_ipc64_perm(&m64->msg_perm, &up64->msg_perm); + err |= __get_user(m64->msg_qbytes, &up64->msg_qbytes); + return err; +} + +static inline int get_compat_msqid(struct msqid64_ds *m, + struct compat_msqid_ds __user *up) +{ + int err; + + if (!access_ok(VERIFY_READ, up, sizeof(*up))) + return -EFAULT; + err = __get_compat_ipc_perm(&m->msg_perm, &up->msg_perm); + err |= __get_user(m->msg_qbytes, &up->msg_qbytes); + return err; +} + +static inline int put_compat_msqid64_ds(struct msqid64_ds *m64, + struct compat_msqid64_ds __user __user *up64) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) + return -EFAULT; + err = __put_compat_ipc64_perm(&m64->msg_perm, &up64->msg_perm); + err |= __put_user(m64->msg_stime, &up64->msg_stime); + err |= __put_user(m64->msg_rtime, &up64->msg_rtime); + err |= __put_user(m64->msg_ctime, &up64->msg_ctime); + err |= __put_user(m64->msg_cbytes, &up64->msg_cbytes); + err |= __put_user(m64->msg_qnum, &up64->msg_qnum); + err |= __put_user(m64->msg_qbytes, &up64->msg_qbytes); + err |= __put_user(m64->msg_lspid, &up64->msg_lspid); + err |= __put_user(m64->msg_lrpid, &up64->msg_lrpid); + return err; +} + +static inline int put_compat_msqid_ds(struct msqid64_ds *m, + struct compat_msqid_ds __user *up) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) + return -EFAULT; + err = __put_compat_ipc_perm(&m->msg_perm, &up->msg_perm); + err |= __put_user(m->msg_stime, &up->msg_stime); + err |= __put_user(m->msg_rtime, &up->msg_rtime); + err |= __put_user(m->msg_ctime, &up->msg_ctime); + err |= __put_user(m->msg_cbytes, &up->msg_cbytes); + err |= __put_user(m->msg_qnum, &up->msg_qnum); + err |= __put_user(m->msg_qbytes, &up->msg_qbytes); + err |= __put_user(m->msg_lspid, &up->msg_lspid); + err |= __put_user(m->msg_lrpid, &up->msg_lrpid); + return err; +} + +static inline int do_msgctl(int first, int second, void __user *buf) +{ + mm_segment_t old_fs; + int err; + + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = sys_msgctl(first, second, buf); + set_fs(old_fs); + + return err; +} + +long compat_sys_msgctl(int first, int second, void __user *uptr) +{ + int err, err2; + struct msqid64_ds m64; + int version = compat_ipc_parse_version(&second); + + switch (second & (~IPC_64)) { + case IPC_INFO: + case IPC_RMID: + case MSG_INFO: + err = sys_msgctl(first, second, uptr); + break; + + case IPC_SET: + if (version == IPC_64) { + err = get_compat_msqid64(&m64, uptr); + } else { + err = get_compat_msqid(&m64, uptr); + } + if (err) + break; + + err = do_msgctl(first, second, &m64); + break; + + case IPC_STAT: + case MSG_STAT: + err = do_msgctl(first, second, &m64); + if (err < 0) + break; + + if (version == IPC_64) { + err2 = put_compat_msqid64_ds(&m64, uptr); + } else { + err2 = put_compat_msqid_ds(&m64, uptr); + } + if (err2) + err = -EFAULT; + break; + + default: + err = -EINVAL; + break; + } + return err; +} + +long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, + void __user *uptr) +{ + int err; + unsigned long raddr; + compat_ulong_t __user *uaddr; + + if (version == 1) + return -EINVAL; + err = do_shmat(first, uptr, second, &raddr); + if (err < 0) + return err; + uaddr = compat_ptr(third); + return put_user(raddr, uaddr); +} + +static inline int get_compat_shmid64_ds(struct shmid64_ds *s64, + struct compat_shmid64_ds __user *up64) +{ + if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) + return -EFAULT; + return __get_compat_ipc64_perm(&s64->shm_perm, &up64->shm_perm); +} + +static inline int get_compat_shmid_ds(struct shmid64_ds *s, + struct compat_shmid_ds __user *up) +{ + if (!access_ok(VERIFY_READ, up, sizeof(*up))) + return -EFAULT; + return __get_compat_ipc_perm(&s->shm_perm, &up->shm_perm); +} + +static inline int put_compat_shmid64_ds(struct shmid64_ds *s64, + struct compat_shmid64_ds __user *up64) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) + return -EFAULT; + err = __put_compat_ipc64_perm(&s64->shm_perm, &up64->shm_perm); + err |= __put_user(s64->shm_atime, &up64->shm_atime); + err |= __put_user(s64->shm_dtime, &up64->shm_dtime); + err |= __put_user(s64->shm_ctime, &up64->shm_ctime); + err |= __put_user(s64->shm_segsz, &up64->shm_segsz); + err |= __put_user(s64->shm_nattch, &up64->shm_nattch); + err |= __put_user(s64->shm_cpid, &up64->shm_cpid); + err |= __put_user(s64->shm_lpid, &up64->shm_lpid); + return err; +} + +static inline int put_compat_shmid_ds(struct shmid64_ds *s, + struct compat_shmid_ds __user *up) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) + return -EFAULT; + err = __put_compat_ipc_perm(&s->shm_perm, &up->shm_perm); + err |= __put_user(s->shm_atime, &up->shm_atime); + err |= __put_user(s->shm_dtime, &up->shm_dtime); + err |= __put_user(s->shm_ctime, &up->shm_ctime); + err |= __put_user(s->shm_segsz, &up->shm_segsz); + err |= __put_user(s->shm_nattch, &up->shm_nattch); + err |= __put_user(s->shm_cpid, &up->shm_cpid); + err |= __put_user(s->shm_lpid, &up->shm_lpid); + return err; +} + +static inline int put_compat_shminfo64(struct shminfo64 *smi, + struct compat_shminfo64 __user *up64) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) + return -EFAULT; + err = __put_user(smi->shmmax, &up64->shmmax); + err |= __put_user(smi->shmmin, &up64->shmmin); + err |= __put_user(smi->shmmni, &up64->shmmni); + err |= __put_user(smi->shmseg, &up64->shmseg); + err |= __put_user(smi->shmall, &up64->shmall); + return err; +} + +static inline int put_compat_shminfo(struct shminfo64 *smi, + struct shminfo __user *up) +{ + int err; + + if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) + return -EFAULT; + err = __put_user(smi->shmmax, &up->shmmax); + err |= __put_user(smi->shmmin, &up->shmmin); + err |= __put_user(smi->shmmni, &up->shmmni); + err |= __put_user(smi->shmseg, &up->shmseg); + err |= __put_user(smi->shmall, &up->shmall); +} + +static inline int put_compat_shm_info(struct shm_info *si, + struct compat_shm_info __user *uip) +{ + int err; + + if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) + return -EFAULT; + err = __put_user(si->used_ids, &uip->used_ids); + err |= __put_user(si->shm_tot, &uip->shm_tot); + err |= __put_user(si->shm_rss, &uip->shm_rss); + err |= __put_user(si->shm_swp, &uip->shm_swp); + err |= __put_user(si->swap_attempts, &uip->swap_attempts); + err |= __put_user(si->swap_successes, &uip->swap_successes); + return err; +} + +static inline int do_shmctl(int shmid, int cmd, void *buf) +{ + mm_segment_t old_fs; + int err; + + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = sys_shmctl(shmid, cmd, buf); + set_fs(old_fs); + + return err; +} + +long compat_sys_shmctl(int first, int second, void __user *uptr) +{ + struct shmid64_ds s64; + struct shminfo64 smi; + struct shm_info si; + int err, err2; + int version = compat_ipc_parse_version(&second); + + switch (second & (~IPC_64)) { + case IPC_RMID: + case SHM_LOCK: + case SHM_UNLOCK: + err = sys_shmctl(first, second, uptr); + break; + + case IPC_INFO: + err = do_shmctl(first, second, &smi); + if (err < 0) + break; + + if (version == IPC_64) { + err2 = put_compat_shminfo64(&smi, uptr); + } else { + err2 = put_compat_shminfo(&smi, uptr); + } + if (err2) + err = -EFAULT; + break; + + + case IPC_SET: + if (version == IPC_64) { + err = get_compat_shmid64_ds(&s64, uptr); + } else { + err = get_compat_shmid_ds(&s64, uptr); + } + if (err) + break; + + err = do_shmctl(first, second, &s64); + break; + + case IPC_STAT: + case SHM_STAT: + err = do_shmctl(first, second, &s64); + if (err < 0) + break; + + if (version == IPC_64) { + err2 = put_compat_shmid64_ds(&s64, uptr); + } else { + err2 = put_compat_shmid_ds(&s64, uptr); + } + if (err2) + err = -EFAULT; + break; + + case SHM_INFO: + err = do_shmctl(first, second, &si); + if (err < 0) + break; + err2 = put_compat_shm_info(&si, uptr); + if (err2) + err = -EFAULT; + break; + + default: + err = -EINVAL; + break; + } + return err; +} + +long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, + unsigned nsops, const struct compat_timespec __user *timeout) +{ + struct timespec ts, __user *ts64; + + /* parameter checking precedence should mirror sys_semtimedop() */ + if (nsops < 1 || semid < 0) + return -EINVAL; + if (nsops > sc_semopm) + return -E2BIG; + if (!access_ok(VERIFY_READ, tsems, nsops * sizeof(struct sembuf))) + return -EFAULT; + if (!timeout) + return sys_semtimedop(semid, tsems, nsops, 0); + + ts64 = compat_alloc_user_space(sizeof(*ts64)); + if (get_compat_timespec(&ts, timeout)) + return -EFAULT; + if (copy_to_user(ts64, &ts, sizeof(ts))) + return -EFAULT; + + return sys_semtimedop(semid, tsems, nsops, ts64); +} diff -puN ipc/Makefile~compat-generic-ipc-emulation ipc/Makefile --- 25/ipc/Makefile~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/ipc/Makefile Mon Mar 1 14:47:36 2004 @@ -4,4 +4,5 @@ obj-y := util.o +obj-$(CONFIG_SYSVIPC_COMPAT) += compat.o obj-$(CONFIG_SYSVIPC) += msg.o sem.o shm.o diff -puN arch/s390/Kconfig~compat-generic-ipc-emulation arch/s390/Kconfig --- 25/arch/s390/Kconfig~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/s390/Kconfig Mon Mar 1 14:47:36 2004 @@ -143,6 +143,11 @@ config COMPAT depends on S390_SUPPORT default y +config SYSVIPC_COMPAT + bool + depends on COMPAT && SYSVIPC + default y + config BINFMT_ELF32 tristate "Kernel support for 31 bit ELF binaries" depends on S390_SUPPORT diff -puN arch/s390/kernel/compat_linux.c~compat-generic-ipc-emulation arch/s390/kernel/compat_linux.c --- 25/arch/s390/kernel/compat_linux.c~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/s390/kernel/compat_linux.c Mon Mar 1 14:47:36 2004 @@ -293,541 +293,6 @@ static inline long put_tv32(struct compa __put_user(i->tv_usec, &o->tv_usec))); } -struct msgbuf32 { s32 mtype; char mtext[1]; }; - -struct ipc64_perm_ds32 -{ - __kernel_key_t key; - __kernel_uid32_t uid; - __kernel_gid32_t gid; - __kernel_uid32_t cuid; - __kernel_gid32_t cgid; - compat_mode_t mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - unsigned int __unused1; - unsigned int __unused2; -}; - -struct ipc_perm32 -{ - key_t key; - compat_uid_t uid; - compat_gid_t gid; - compat_uid_t cuid; - compat_gid_t cgid; - compat_mode_t mode; - unsigned short seq; -}; - -struct semid_ds32 { - struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ - compat_time_t sem_otime; /* last semop time */ - compat_time_t 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_ds32 sem_perm; - unsigned int __pad1; - compat_time_t sem_otime; - unsigned int __pad2; - compat_time_t sem_ctime; - u32 sem_nsems; - u32 __unused1; - u32 __unused2; -}; - -struct msqid_ds32 -{ - struct ipc_perm32 msg_perm; - u32 msg_first; - u32 msg_last; - compat_time_t msg_stime; - compat_time_t msg_rtime; - compat_time_t msg_ctime; - u32 wwait; - u32 rwait; - unsigned short msg_cbytes; - unsigned short msg_qnum; - unsigned short msg_qbytes; - compat_ipc_pid_t msg_lspid; - compat_ipc_pid_t msg_lrpid; -}; - -struct msqid64_ds32 { - struct ipc64_perm_ds32 msg_perm; - unsigned int __pad1; - compat_time_t msg_stime; - unsigned int __pad2; - compat_time_t msg_rtime; - unsigned int __pad3; - compat_time_t msg_ctime; - unsigned int msg_cbytes; - unsigned int msg_qnum; - unsigned int msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - unsigned int __unused1; - unsigned int __unused2; -}; - - -struct shmid_ds32 { - struct ipc_perm32 shm_perm; - int shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; - compat_ipc_pid_t shm_cpid; - compat_ipc_pid_t shm_lpid; - unsigned short shm_nattch; -}; - -struct shmid64_ds32 { - struct ipc64_perm_ds32 shm_perm; - compat_size_t shm_segsz; - compat_time_t shm_atime; - unsigned int __unused1; - compat_time_t shm_dtime; - unsigned int __unused2; - compat_time_t shm_ctime; - unsigned int __unused3; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - unsigned int shm_nattch; - unsigned int __unused4; - unsigned int __unused5; -}; - -extern int sem_ctls[]; -#define sc_semopm (sem_ctls[2]) -#define SEMOPM_FAST 64 /* ~ 372 bytes on stack */ - -static long -do_sys32_semtimedop (int semid, struct sembuf *tsops, int nsops, - struct compat_timespec *timeout32) -{ - struct sembuf *sops, fast_sops[SEMOPM_FAST]; - struct timespec t; - mm_segment_t oldfs; - long ret; - - /* parameter checking precedence should mirror sys_semtimedop() */ - if (nsops < 1 || semid < 0) - return -EINVAL; - if (nsops > sc_semopm) - return -E2BIG; - if (nsops <= SEMOPM_FAST) - sops = fast_sops; - else { - sops = kmalloc(nsops * sizeof(*sops), GFP_KERNEL); - if (sops == NULL) - return -ENOMEM; - } - if (copy_from_user(sops, tsops, nsops * sizeof(*tsops)) || - get_compat_timespec(&t, timeout32)) - ret = -EFAULT; - else { - oldfs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_semtimedop(semid, sops, nsops, &t); - set_fs(oldfs); - } - if (sops != fast_sops) - kfree(sops); - return ret; -} - -#define IPCOP_MASK(__x) (1UL << (__x)) -static int do_sys32_semctl(int first, int second, int third, void *uptr) -{ - union semun fourth; - u32 pad; - int err = -EINVAL; - - if (!uptr) - goto out; - err = -EFAULT; - if (get_user (pad, (u32 *)uptr)) - goto out; - if(third == SETVAL) - fourth.val = (int)pad; - else - fourth.__pad = (void *)A(pad); - if (IPCOP_MASK (third) & - (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SEM_INFO) | IPCOP_MASK (GETVAL) | - IPCOP_MASK (GETPID) | IPCOP_MASK (GETNCNT) | IPCOP_MASK (GETZCNT) | - IPCOP_MASK (GETALL) | IPCOP_MASK (SETALL) | IPCOP_MASK (IPC_RMID))) { - err = sys_semctl (first, second, third, fourth); - } else if (third & IPC_64) { - struct semid64_ds s; - struct semid64_ds32 *usp = (struct semid64_ds32 *)A(pad); - mm_segment_t old_fs; - int need_back_translation; - - if (third == (IPC_SET|IPC_64)) { - err = get_user (s.sem_perm.uid, &usp->sem_perm.uid); - err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid); - err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode); - if (err) - goto out; - fourth.__pad = &s; - } - need_back_translation = - (IPCOP_MASK (third) & - (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0; - if (need_back_translation) - fourth.__pad = &s; - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_semctl (first, second, third, fourth); - set_fs (old_fs); - if (need_back_translation) { - int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key); - err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid); - err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid); - err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid); - err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid); - err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode); - err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq); - err2 |= __put_user (s.sem_otime, &usp->sem_otime); - err2 |= __put_user (s.sem_ctime, &usp->sem_ctime); - err2 |= __put_user (s.sem_nsems, &usp->sem_nsems); - if (err2) err = -EFAULT; - } - } else { - struct semid_ds s; - struct semid_ds32 *usp = (struct semid_ds32 *)A(pad); - mm_segment_t old_fs; - int need_back_translation; - - if (third == IPC_SET) { - err = get_user (s.sem_perm.uid, &usp->sem_perm.uid); - err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid); - err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode); - if (err) - goto out; - fourth.__pad = &s; - } - need_back_translation = - (IPCOP_MASK (third) & - (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0; - if (need_back_translation) - fourth.__pad = &s; - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_semctl (first, second, third, fourth); - set_fs (old_fs); - if (need_back_translation) { - int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key); - err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid); - err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid); - err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid); - err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid); - err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode); - err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq); - err2 |= __put_user (s.sem_otime, &usp->sem_otime); - err2 |= __put_user (s.sem_ctime, &usp->sem_ctime); - err2 |= __put_user (s.sem_nsems, &usp->sem_nsems); - if (err2) err = -EFAULT; - } - } -out: - return err; -} - -static int do_sys32_msgsnd (int first, int second, int third, void *uptr) -{ - struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf), GFP_USER); - struct msgbuf32 *up = (struct msgbuf32 *)uptr; - mm_segment_t old_fs; - int err; - - if (!p) - return -ENOMEM; - - err = -EINVAL; - if (second > MSGMAX || first < 0 || second < 0) - goto out; - - err = -EFAULT; - if (!uptr) - goto out; - if (get_user (p->mtype, &up->mtype) || - __copy_from_user (p->mtext, &up->mtext, second)) - 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 (first < 0 || second < 0) - return -EINVAL; - - if (!version) { - struct ipc_kludge_32 *uipck = (struct ipc_kludge_32 *)uptr; - struct ipc_kludge_32 ipck; - - err = -EINVAL; - if (!uptr) - goto out; - err = -EFAULT; - if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge_32))) - goto out; - uptr = (void *)A(ipck.msgp); - msgtyp = ipck.msgtyp; - } - err = -ENOMEM; - p = kmalloc (second + sizeof (struct msgbuf), GFP_USER); - if (!p) - goto out; - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_msgrcv (first, p, second, msgtyp, third); - set_fs (old_fs); - if (err < 0) - goto free_then_out; - up = (struct msgbuf32 *)uptr; - if (put_user (p->mtype, &up->mtype) || - __copy_to_user (&up->mtext, p->mtext, err)) - err = -EFAULT; -free_then_out: - kfree (p); -out: - return err; -} - -static int do_sys32_msgctl (int first, int second, void *uptr) -{ - int err; - - if (IPCOP_MASK (second) & - (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) | - IPCOP_MASK (IPC_RMID))) { - err = sys_msgctl (first, second, (struct msqid_ds *)uptr); - } else if (second & IPC_64) { - struct msqid64_ds m; - struct msqid64_ds32 *up = (struct msqid64_ds32 *)uptr; - mm_segment_t old_fs; - - if (second == (IPC_SET|IPC_64)) { - err = get_user (m.msg_perm.uid, &up->msg_perm.uid); - err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid); - err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode); - err |= __get_user (m.msg_qbytes, &up->msg_qbytes); - if (err) - goto out; - } - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_msgctl (first, second, (struct msqid_ds *)&m); - set_fs (old_fs); - if (IPCOP_MASK (second) & - (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) { - int err2 = put_user (m.msg_perm.key, &up->msg_perm.key); - err2 |= __put_user (high2lowuid(m.msg_perm.uid), &up->msg_perm.uid); - err2 |= __put_user (high2lowgid(m.msg_perm.gid), &up->msg_perm.gid); - err2 |= __put_user (high2lowuid(m.msg_perm.cuid), &up->msg_perm.cuid); - err2 |= __put_user (high2lowgid(m.msg_perm.cgid), &up->msg_perm.cgid); - err2 |= __put_user (m.msg_perm.mode, &up->msg_perm.mode); - err2 |= __put_user (m.msg_perm.seq, &up->msg_perm.seq); - err2 |= __put_user (m.msg_stime, &up->msg_stime); - err2 |= __put_user (m.msg_rtime, &up->msg_rtime); - err2 |= __put_user (m.msg_ctime, &up->msg_ctime); - err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes); - err2 |= __put_user (m.msg_qnum, &up->msg_qnum); - err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes); - err2 |= __put_user (m.msg_lspid, &up->msg_lspid); - err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid); - if (err2) - err = -EFAULT; - } - } else { - struct msqid_ds m; - struct msqid_ds32 *up = (struct msqid_ds32 *)uptr; - mm_segment_t old_fs; - - if (second == IPC_SET) { - err = get_user (m.msg_perm.uid, &up->msg_perm.uid); - err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid); - err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode); - err |= __get_user (m.msg_qbytes, &up->msg_qbytes); - if (err) - goto out; - } - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_msgctl (first, second, &m); - set_fs (old_fs); - if (IPCOP_MASK (second) & - (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) { - int err2 = put_user (m.msg_perm.key, &up->msg_perm.key); - err2 |= __put_user (high2lowuid(m.msg_perm.uid), &up->msg_perm.uid); - err2 |= __put_user (high2lowgid(m.msg_perm.gid), &up->msg_perm.gid); - err2 |= __put_user (high2lowuid(m.msg_perm.cuid), &up->msg_perm.cuid); - err2 |= __put_user (high2lowgid(m.msg_perm.cgid), &up->msg_perm.cgid); - err2 |= __put_user (m.msg_perm.mode, &up->msg_perm.mode); - err2 |= __put_user (m.msg_perm.seq, &up->msg_perm.seq); - err2 |= __put_user (m.msg_stime, &up->msg_stime); - err2 |= __put_user (m.msg_rtime, &up->msg_rtime); - err2 |= __put_user (m.msg_ctime, &up->msg_ctime); - err2 |= __put_user (m.msg_cbytes, &up->msg_cbytes); - err2 |= __put_user (m.msg_qnum, &up->msg_qnum); - err2 |= __put_user (m.msg_qbytes, &up->msg_qbytes); - err2 |= __put_user (m.msg_lspid, &up->msg_lspid); - err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid); - if (err2) - err = -EFAULT; - } - } - -out: - return err; -} - -static int do_sys32_shmat (int first, int second, int third, int version, void *uptr) -{ - unsigned long raddr; - u32 *uaddr = (u32 *)A((u32)third); - int err = -EINVAL; - - if (version == 1) - goto out; - err = do_shmat (first, uptr, second, &raddr); - if (err) - goto out; - err = put_user (raddr, uaddr); -out: - return err; -} - -static int do_sys32_shmctl (int first, int second, void *uptr) -{ - int err; - - if (IPCOP_MASK (second) & - (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SHM_LOCK) | IPCOP_MASK (SHM_UNLOCK) | - IPCOP_MASK (IPC_RMID))) { - if (second == (IPC_INFO|IPC_64)) - second = IPC_INFO; /* So that we don't have to translate it */ - err = sys_shmctl (first, second, (struct shmid_ds *)uptr); - } else if ((second & IPC_64) && second != (SHM_INFO|IPC_64)) { - struct shmid64_ds s; - struct shmid64_ds32 *up = (struct shmid64_ds32 *)uptr; - mm_segment_t old_fs; - - if (second == (IPC_SET|IPC_64)) { - err = get_user (s.shm_perm.uid, &up->shm_perm.uid); - err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid); - err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode); - if (err) - goto out; - } - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_shmctl (first, second, (struct shmid_ds *)&s); - set_fs (old_fs); - if (err < 0) - goto out; - - /* Mask it even in this case so it becomes a CSE. */ - if (IPCOP_MASK (second) & - (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) { - int err2 = put_user (s.shm_perm.key, &up->shm_perm.key); - err2 |= __put_user (high2lowuid(s.shm_perm.uid), &up->shm_perm.uid); - err2 |= __put_user (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid); - err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid); - err2 |= __put_user (high2lowgid(s.shm_perm.cgid), &up->shm_perm.cgid); - err2 |= __put_user (s.shm_perm.mode, &up->shm_perm.mode); - err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq); - err2 |= __put_user (s.shm_atime, &up->shm_atime); - err2 |= __put_user (s.shm_dtime, &up->shm_dtime); - err2 |= __put_user (s.shm_ctime, &up->shm_ctime); - err2 |= __put_user (s.shm_segsz, &up->shm_segsz); - err2 |= __put_user (s.shm_nattch, &up->shm_nattch); - err2 |= __put_user (s.shm_cpid, &up->shm_cpid); - err2 |= __put_user (s.shm_lpid, &up->shm_lpid); - if (err2) - err = -EFAULT; - } - } else { - struct shmid_ds s; - struct shmid_ds32 *up = (struct shmid_ds32 *)uptr; - mm_segment_t old_fs; - - second &= ~IPC_64; - if (second == IPC_SET) { - err = get_user (s.shm_perm.uid, &up->shm_perm.uid); - err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid); - err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode); - if (err) - goto out; - } - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_shmctl (first, second, &s); - set_fs (old_fs); - if (err < 0) - goto out; - - /* Mask it even in this case so it becomes a CSE. */ - if (second == SHM_INFO) { - struct shm_info32 { - int used_ids; - u32 shm_tot, shm_rss, shm_swp; - u32 swap_attempts, swap_successes; - } *uip = (struct shm_info32 *)uptr; - struct shm_info *kp = (struct shm_info *)&s; - int err2 = put_user (kp->used_ids, &uip->used_ids); - err2 |= __put_user (kp->shm_tot, &uip->shm_tot); - err2 |= __put_user (kp->shm_rss, &uip->shm_rss); - err2 |= __put_user (kp->shm_swp, &uip->shm_swp); - err2 |= __put_user (kp->swap_attempts, &uip->swap_attempts); - err2 |= __put_user (kp->swap_successes, &uip->swap_successes); - if (err2) - err = -EFAULT; - } else if (IPCOP_MASK (second) & - (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) { - int err2 = put_user (s.shm_perm.key, &up->shm_perm.key); - err2 |= __put_user (high2lowuid(s.shm_perm.uid), &up->shm_perm.uid); - err2 |= __put_user (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid); - err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid); - err2 |= __put_user (high2lowgid(s.shm_perm.cgid), &up->shm_perm.cgid); - err2 |= __put_user (s.shm_perm.mode, &up->shm_perm.mode); - err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq); - err2 |= __put_user (s.shm_atime, &up->shm_atime); - err2 |= __put_user (s.shm_dtime, &up->shm_dtime); - err2 |= __put_user (s.shm_ctime, &up->shm_ctime); - err2 |= __put_user (s.shm_segsz, &up->shm_segsz); - err2 |= __put_user (s.shm_nattch, &up->shm_nattch); - err2 |= __put_user (s.shm_cpid, &up->shm_cpid); - err2 |= __put_user (s.shm_lpid, &up->shm_lpid); - if (err2) - err = -EFAULT; - } - } -out: - return err; -} - /* * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation. * @@ -835,84 +300,64 @@ out: */ asmlinkage int sys32_ipc (u32 call, int first, int second, int third, u32 ptr) { - int version, err; + if(call >> 16) /* hack for backward compatibility */ + return -EINVAL; - version = call >> 16; /* hack for backward compatibility */ call &= 0xffff; - if(version) - return -EINVAL; - if (call <= SEMTIMEDOP) switch (call) { case SEMTIMEDOP: - if (third) { - err = do_sys32_semtimedop(first, - (struct sembuf *)AA(ptr), - second, - (struct compat_timespec *) - AA((u32)third)); - goto out; - } + if (third) + return compat_sys_semtimedop(first, + compat_ptr(ptr), second, + compat_ptr(third)); /* else fall through for normal semop() */ case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ - err = sys_semtimedop (first, (struct sembuf *)AA(ptr), + return sys_semtimedop (first, compat_ptr(ptr), second, NULL); - goto out; case SEMGET: - err = sys_semget (first, second, third); - goto out; + return sys_semget (first, second, third); case SEMCTL: - err = do_sys32_semctl (first, second, third, (void *)AA(ptr)); - goto out; + return compat_sys_semctl (first, second, third, + compat_ptr(ptr)); default: - err = -EINVAL; - goto out; + return -EINVAL; }; if (call <= MSGCTL) switch (call) { case MSGSND: - err = do_sys32_msgsnd (first, second, third, (void *)AA(ptr)); - goto out; + return compat_sys_msgsnd (first, second, third, + compat_ptr(ptr)); case MSGRCV: - err = do_sys32_msgrcv (first, second, 0, third, - version, (void *)AA(ptr)); - goto out; + return compat_sys_msgrcv (first, second, 0, third, + 0, compat_ptr(ptr)); case MSGGET: - err = sys_msgget ((key_t) first, second); - goto out; + return sys_msgget ((key_t) first, second); case MSGCTL: - err = do_sys32_msgctl (first, second, (void *)AA(ptr)); - goto out; + return compat_sys_msgctl (first, second, + compat_ptr(ptr)); default: - err = -EINVAL; - goto out; + return -EINVAL; } if (call <= SHMCTL) switch (call) { case SHMAT: - err = do_sys32_shmat (first, second, third, - version, (void *)AA(ptr)); - goto out; + return compat_sys_shmat (first, second, third, + 0, compat_ptr(ptr)); case SHMDT: - err = sys_shmdt ((char *)AA(ptr)); - goto out; + return sys_shmdt(compat_ptr(ptr)); case SHMGET: - err = sys_shmget (first, second, third); - goto out; + return sys_shmget(first, second, third); case SHMCTL: - err = do_sys32_shmctl (first, second, (void *)AA(ptr)); - goto out; + return compat_sys_shmctl(first, second, + compat_ptr(ptr)); default: - err = -EINVAL; - goto out; + return -EINVAL; } - err = -EINVAL; - -out: - return err; + return -EINVAL; } asmlinkage int sys32_truncate64(const char * path, unsigned long high, unsigned long low) diff -puN include/asm-s390/compat.h~compat-generic-ipc-emulation include/asm-s390/compat.h --- 25/include/asm-s390/compat.h~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/include/asm-s390/compat.h Mon Mar 1 14:47:59 2004 @@ -15,6 +15,8 @@ typedef s32 compat_clock_t; typedef s32 compat_pid_t; typedef u16 compat_uid_t; typedef u16 compat_gid_t; +typedef u32 compat_uid32_t; +typedef u32 compat_gid32_t; typedef u16 compat_mode_t; typedef u32 compat_ino_t; typedef u16 compat_dev_t; @@ -25,6 +27,7 @@ typedef u16 compat_ipc_pid_t; typedef s32 compat_daddr_t; typedef u32 compat_caddr_t; typedef __kernel_fsid_t compat_fsid_t; +typedef s32 compat_key_t; typedef s32 compat_timer_t; typedef s32 compat_int_t; @@ -135,4 +138,61 @@ static inline void *compat_alloc_user_sp return (void *) (stack - len); } +struct compat_ipc64_perm { + compat_key_t key; + compat_uid32_t uid; + compat_gid32_t gid; + compat_uid32_t cuid; + compat_gid32_t cgid; + compat_mode_t mode; + unsigned short __pad1; + unsigned short seq; + unsigned short __pad2; + unsigned int __unused1; + unsigned int __unused2; +}; + +struct compat_semid64_ds { + struct compat_ipc64_perm sem_perm; + compat_time_t sem_otime; + compat_ulong_t __pad1; + compat_time_t sem_ctime; + compat_ulong_t __pad2; + compat_ulong_t sem_nsems; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; + +struct compat_msqid64_ds { + struct compat_ipc64_perm msg_perm; + compat_time_t msg_stime; + compat_ulong_t __pad1; + compat_time_t msg_rtime; + compat_ulong_t __pad2; + compat_time_t msg_ctime; + compat_ulong_t __pad3; + compat_ulong_t msg_cbytes; + compat_ulong_t msg_qnum; + compat_ulong_t msg_qbytes; + compat_pid_t msg_lspid; + compat_pid_t msg_lrpid; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; + +struct compat_shmid64_ds { + struct compat_ipc64_perm shm_perm; + compat_size_t shm_segsz; + compat_time_t shm_atime; + compat_ulong_t __pad1; + compat_time_t shm_dtime; + compat_ulong_t __pad2; + compat_time_t shm_ctime; + compat_ulong_t __pad3; + compat_pid_t shm_cpid; + compat_pid_t shm_lpid; + compat_ulong_t shm_nattch; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; #endif /* _ASM_S390X_COMPAT_H */ diff -puN arch/x86_64/ia32/ipc32.c~compat-generic-ipc-emulation arch/x86_64/ia32/ipc32.c --- 25/arch/x86_64/ia32/ipc32.c~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/x86_64/ia32/ipc32.c Mon Mar 1 14:47:36 2004 @@ -1,656 +1,19 @@ #include -#include -#include -#include +#include +#include #include +#include #include #include -#include #include -#include #include #include -#include -#include -#include -#include -#include - -#include - -/* - * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.. - * - * This is really horribly ugly. - */ - -struct msgbuf32 { - s32 mtype; - char mtext[1]; -}; - -struct ipc_perm32 { - int key; - compat_uid_t uid; - compat_gid_t gid; - compat_uid_t cuid; - compat_gid_t cgid; - unsigned short mode; - unsigned short seq; -}; - -struct ipc64_perm32 { - unsigned key; - compat_uid32_t uid; - compat_gid32_t gid; - compat_uid32_t cuid; - compat_gid32_t cgid; - unsigned short mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - unsigned int unused1; - unsigned int unused2; -}; - -struct semid_ds32 { - struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ - compat_time_t sem_otime; /* last semop time */ - compat_time_t 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_perm32 sem_perm; - compat_time_t sem_otime; - unsigned int __unused1; - compat_time_t sem_ctime; - unsigned int __unused2; - unsigned int sem_nsems; - unsigned int __unused3; - unsigned int __unused4; -}; - -struct msqid_ds32 { - struct ipc_perm32 msg_perm; - u32 msg_first; - u32 msg_last; - compat_time_t msg_stime; - compat_time_t msg_rtime; - compat_time_t msg_ctime; - u32 wwait; - u32 rwait; - unsigned short msg_cbytes; - unsigned short msg_qnum; - unsigned short msg_qbytes; - compat_ipc_pid_t msg_lspid; - compat_ipc_pid_t msg_lrpid; -}; - -struct msqid64_ds32 { - struct ipc64_perm32 msg_perm; - compat_time_t msg_stime; - unsigned int __unused1; - compat_time_t msg_rtime; - unsigned int __unused2; - compat_time_t msg_ctime; - unsigned int __unused3; - unsigned int msg_cbytes; - unsigned int msg_qnum; - unsigned int msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - unsigned int __unused4; - unsigned int __unused5; -}; - -struct shmid_ds32 { - struct ipc_perm32 shm_perm; - int shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; - compat_ipc_pid_t shm_cpid; - compat_ipc_pid_t shm_lpid; - unsigned short shm_nattch; -}; - -struct shmid64_ds32 { - struct ipc64_perm32 shm_perm; - compat_size_t shm_segsz; - compat_time_t shm_atime; - unsigned int __unused1; - compat_time_t shm_dtime; - unsigned int __unused2; - compat_time_t shm_ctime; - unsigned int __unused3; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - unsigned int shm_nattch; - unsigned int __unused4; - unsigned int __unused5; -}; - -struct shminfo64_32 { - unsigned int shmmax; - unsigned int shmmin; - unsigned int shmmni; - unsigned int shmseg; - unsigned int shmall; - unsigned int __unused1; - unsigned int __unused2; - unsigned int __unused3; - unsigned int __unused4; -}; - -struct shm_info32 { - int used_ids; - u32 shm_tot, shm_rss, shm_swp; - u32 swap_attempts, swap_successes; -}; - -struct ipc_kludge { - u32 msgp; - s32 msgtyp; -}; - - -#define A(__x) ((unsigned long)(__x)) -#define AA(__x) ((unsigned long)(__x)) - -#define SEMOP 1 -#define SEMGET 2 -#define SEMCTL 3 -#define TIMEDSEMOP 4 -#define MSGSND 11 -#define MSGRCV 12 -#define MSGGET 13 -#define MSGCTL 14 -#define SHMAT 21 -#define SHMDT 22 -#define SHMGET 23 -#define SHMCTL 24 - -#define IPCOP_MASK(__x) (1UL << (__x)) - -static int -ipc_parse_version32 (int *cmd) -{ - if (*cmd & IPC_64) { - *cmd ^= IPC_64; - return IPC_64; - } else { - return IPC_OLD; - } -} - -static int put_semid(void *user_semid, struct semid64_ds *s, int version) -{ - int err2; - switch (version) { - case IPC_64: { - struct semid64_ds32 *usp64 = (struct semid64_ds32 *) user_semid; - - if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { - err2 = -EFAULT; - break; - } - err2 = __put_user(s->sem_perm.key, &usp64->sem_perm.key); - err2 |= __put_user(s->sem_perm.uid, &usp64->sem_perm.uid); - err2 |= __put_user(s->sem_perm.gid, &usp64->sem_perm.gid); - err2 |= __put_user(s->sem_perm.cuid, &usp64->sem_perm.cuid); - err2 |= __put_user(s->sem_perm.cgid, &usp64->sem_perm.cgid); - err2 |= __put_user(s->sem_perm.mode, &usp64->sem_perm.mode); - err2 |= __put_user(s->sem_perm.seq, &usp64->sem_perm.seq); - err2 |= __put_user(s->sem_otime, &usp64->sem_otime); - err2 |= __put_user(s->sem_ctime, &usp64->sem_ctime); - err2 |= __put_user(s->sem_nsems, &usp64->sem_nsems); - break; - } - default: { - struct semid_ds32 *usp32 = (struct semid_ds32 *) user_semid; - - if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { - err2 = -EFAULT; - break; - } - err2 = __put_user(s->sem_perm.key, &usp32->sem_perm.key); - err2 |= __put_user(s->sem_perm.uid, &usp32->sem_perm.uid); - err2 |= __put_user(s->sem_perm.gid, &usp32->sem_perm.gid); - err2 |= __put_user(s->sem_perm.cuid, &usp32->sem_perm.cuid); - err2 |= __put_user(s->sem_perm.cgid, &usp32->sem_perm.cgid); - err2 |= __put_user(s->sem_perm.mode, &usp32->sem_perm.mode); - err2 |= __put_user(s->sem_perm.seq, &usp32->sem_perm.seq); - err2 |= __put_user(s->sem_otime, &usp32->sem_otime); - err2 |= __put_user(s->sem_ctime, &usp32->sem_ctime); - err2 |= __put_user(s->sem_nsems, &usp32->sem_nsems); - break; - } - } - return err2; -} - -static int -semctl32 (int first, int second, int third, void *uptr) -{ - union semun fourth; - u32 pad; - int err; - struct semid64_ds s; - mm_segment_t old_fs; - int version = ipc_parse_version32(&third); - - if (!uptr) - return -EINVAL; - if (get_user(pad, (u32 *)uptr)) - return -EFAULT; - if (third == SETVAL) - fourth.val = (int)pad; - else - fourth.__pad = (void *)A(pad); - switch (third) { - case IPC_INFO: - case IPC_RMID: - case IPC_SET: - case SEM_INFO: - case GETVAL: - case GETPID: - case GETNCNT: - case GETZCNT: - case GETALL: - case SETVAL: - case SETALL: - err = sys_semctl(first, second, third, fourth); - break; - - case IPC_STAT: - case SEM_STAT: - fourth.__pad = &s; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_semctl(first, second, third, fourth); - set_fs(old_fs); - if (!err) - err = put_semid((void *)A(pad), &s, version); - break; - default: - err = -EINVAL; - break; - } - return err; -} - -#define MAXBUF (64*1024) - -static int -do_sys32_msgsnd (int first, int second, int third, void *uptr) -{ - struct msgbuf *p; - struct msgbuf32 *up = (struct msgbuf32 *)uptr; - mm_segment_t old_fs; - int err; - - if (second >= MAXBUF-sizeof(struct msgbuf)) - return -EINVAL; - p = kmalloc(second + sizeof(struct msgbuf), GFP_USER); - if (!p) - return -ENOMEM; - err = get_user(p->mtype, &up->mtype); - err |= (copy_from_user(p->mtext, &up->mtext, second) ? -EFAULT : 0); - 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; - } - if (second >= MAXBUF-sizeof(struct msgbuf)) - return -EINVAL; - err = -ENOMEM; - p = kmalloc(second + sizeof(struct msgbuf), GFP_USER); - if (!p) - goto out; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgrcv(first, p, second, 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 -msgctl32 (int first, int second, void *uptr) -{ - int err = -EINVAL, err2; - struct msqid_ds m; - struct msqid64_ds m64; - struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr; - struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr; - mm_segment_t old_fs; - int version = ipc_parse_version32(&second); - - switch (second) { - case IPC_INFO: - case IPC_RMID: - case MSG_INFO: - err = sys_msgctl(first, second, (struct msqid_ds *)uptr); - break; - - case IPC_SET: - if (version == IPC_64) { - err = get_user(m.msg_perm.uid, &up64->msg_perm.uid); - err |= get_user(m.msg_perm.gid, &up64->msg_perm.gid); - err |= get_user(m.msg_perm.mode, &up64->msg_perm.mode); - err |= get_user(m.msg_qbytes, &up64->msg_qbytes); - } else { - err = get_user(m.msg_perm.uid, &up32->msg_perm.uid); - err |= get_user(m.msg_perm.gid, &up32->msg_perm.gid); - err |= get_user(m.msg_perm.mode, &up32->msg_perm.mode); - err |= get_user(m.msg_qbytes, &up32->msg_qbytes); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second, &m); - set_fs(old_fs); - break; - - case IPC_STAT: - case MSG_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second, (void *) &m64); - set_fs(old_fs); - if (version == IPC_64) { - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key); - err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid); - err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid); - err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid); - err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid); - err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode); - err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq); - err2 |= __put_user(m64.msg_stime, &up64->msg_stime); - err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime); - err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime); - err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes); - err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum); - err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes); - err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid); - err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid); - if (err2) - err = -EFAULT; - } else { - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key); - err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid); - err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid); - err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid); - err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid); - err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode); - err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq); - err2 |= __put_user(m64.msg_stime, &up32->msg_stime); - err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime); - err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime); - err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes); - err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum); - err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes); - err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid); - err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid); - if (err2) - err = -EFAULT; - } - break; - } - return err; -} - -static int -shmat32 (int first, int second, int third, int version, void *uptr) -{ - unsigned long raddr; - u32 *uaddr = (u32 *)A((u32)third); - int err; - - if (version == 1) - return -EINVAL; /* iBCS2 emulator entry point: unsupported */ - err = do_shmat(first, uptr, second, &raddr); - if (err) - return err; - return put_user(raddr, uaddr); -} - -static int put_shmid64(struct shmid64_ds *s64p, void *uptr, int version) -{ - int err2; -#define s64 (*s64p) - if (version == IPC_64) { - struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr; - - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) - return -EFAULT; - - err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up64->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); - } else { - struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr; - - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) - return -EFAULT; - - err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up32->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); - } -#undef s64 - return err2 ? -EFAULT : 0; -} -static int -shmctl32 (int first, int second, void *uptr) -{ - int err = -EFAULT, err2; - struct shmid_ds s; - struct shmid64_ds s64; - mm_segment_t old_fs; - struct shm_info32 *uip = (struct shm_info32 *)uptr; - struct shm_info si; - int version = ipc_parse_version32(&second); - struct shminfo64 smi; - struct shminfo *usi32 = (struct shminfo *) uptr; - struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr; - - switch (second) { - case IPC_INFO: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (struct shmid_ds *)&smi); - set_fs(old_fs); - - if (version == IPC_64) { - if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) { - err = -EFAULT; - break; - } - err2 = __put_user(smi.shmmax, &usi64->shmmax); - err2 |= __put_user(smi.shmmin, &usi64->shmmin); - err2 |= __put_user(smi.shmmni, &usi64->shmmni); - err2 |= __put_user(smi.shmseg, &usi64->shmseg); - err2 |= __put_user(smi.shmall, &usi64->shmall); - } else { - if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) { - err = -EFAULT; - break; - } - err2 = __put_user(smi.shmmax, &usi32->shmmax); - err2 |= __put_user(smi.shmmin, &usi32->shmmin); - err2 |= __put_user(smi.shmmni, &usi32->shmmni); - err2 |= __put_user(smi.shmseg, &usi32->shmseg); - err2 |= __put_user(smi.shmall, &usi32->shmall); - } - if (err2) - err = -EFAULT; - break; - - case IPC_RMID: - case SHM_LOCK: - case SHM_UNLOCK: - err = sys_shmctl(first, second, (struct shmid_ds *)uptr); - break; - - case IPC_SET: - if (version == IPC_64) { - struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr; - err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); - err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); - err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); - } else { - struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr; - err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); - err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); - err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, &s); - set_fs(old_fs); - break; - - case IPC_STAT: - case SHM_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (void *) &s64); - set_fs(old_fs); - - if (err < 0) - break; - err2 = put_shmid64(&s64, uptr, version); - if (err2) - err = err2; - break; - - case SHM_INFO: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (void *)&si); - set_fs(old_fs); - if (err < 0) - break; - - if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) { - err = -EFAULT; - break; - } - err2 = __put_user(si.used_ids, &uip->used_ids); - err2 |= __put_user(si.shm_tot, &uip->shm_tot); - err2 |= __put_user(si.shm_rss, &uip->shm_rss); - err2 |= __put_user(si.shm_swp, &uip->shm_swp); - err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); - err2 |= __put_user(si.swap_successes, &uip->swap_successes); - if (err2) - err = -EFAULT; - break; - default: - err = -EINVAL; - break; - } - return err; -} - -extern int sem_ctls[]; - -static long semtimedop32(int semid, struct sembuf *sb, - unsigned nsops, struct compat_timespec *ts32) -{ - struct timespec ts; - mm_segment_t oldfs = get_fs(); - long ret; - - if (nsops > sem_ctls[2]) - return -E2BIG; - if (!access_ok(VERIFY_READ, sb, nsops * sizeof(struct sembuf))) - return -EFAULT; - if (ts32 && get_compat_timespec(&ts, ts32)) - return -EFAULT; - - set_fs(KERNEL_DS); - ret = sys_semtimedop(semid, sb, nsops, ts32 ? &ts : NULL); - set_fs(oldfs); - return ret; -} +#include asmlinkage long -sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) +sys32_ipc(u32 call, int first, int second, int third, + compat_uptr_t ptr, u32 fifth) { int version; @@ -660,35 +23,35 @@ sys32_ipc (u32 call, int first, int seco switch (call) { case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ - return sys_semtimedop(first, (struct sembuf *)AA(ptr), second, - NULL); - case TIMEDSEMOP: - return semtimedop32(first, (struct sembuf *)AA(ptr), second, - (struct compat_timespec *)AA(fifth)); + return sys_semtimedop(first, compat_ptr(ptr), second, NULL); + case SEMTIMEDOP: + return compat_sys_semtimedop(first, compat_ptr(ptr), second, + compat_ptr(fifth)); case SEMGET: return sys_semget(first, second, third); case SEMCTL: - return semctl32(first, second, third, (void *)AA(ptr)); + return compat_sys_semctl(first, second, third, compat_ptr(ptr)); case MSGSND: - return do_sys32_msgsnd(first, second, third, (void *)AA(ptr)); + return compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); case MSGRCV: - return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr)); + return compat_sys_msgrcv(first, second, fifth, third, + version, compat_ptr(ptr)); case MSGGET: return sys_msgget((key_t) first, second); case MSGCTL: - return msgctl32(first, second, (void *)AA(ptr)); + return compat_sys_msgctl(first, second, compat_ptr(ptr)); case SHMAT: - return shmat32(first, second, third, version, (void *)AA(ptr)); + return compat_sys_shmat(first, second, third, version, + compat_ptr(ptr)); break; case SHMDT: - return sys_shmdt((char *)AA(ptr)); + return sys_shmdt(compat_ptr(ptr)); case SHMGET: return sys_shmget(first, second, third); case SHMCTL: - return shmctl32(first, second, (void *)AA(ptr)); + return compat_sys_shmctl(first, second, compat_ptr(ptr)); } return -ENOSYS; } - diff -puN arch/x86_64/Kconfig~compat-generic-ipc-emulation arch/x86_64/Kconfig --- 25/arch/x86_64/Kconfig~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/x86_64/Kconfig Mon Mar 1 14:47:36 2004 @@ -381,6 +381,10 @@ config COMPAT depends on IA32_EMULATION default y +config SYSVIPC_COMPAT + bool + depends on COMPAT && SYSVIPC + default y config UID16 bool diff -puN include/asm-x86_64/compat.h~compat-generic-ipc-emulation include/asm-x86_64/compat.h --- 25/include/asm-x86_64/compat.h~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/include/asm-x86_64/compat.h Mon Mar 1 14:47:36 2004 @@ -29,6 +29,7 @@ typedef s32 compat_daddr_t; typedef u32 compat_caddr_t; typedef __kernel_fsid_t compat_fsid_t; typedef u32 compat_timer_t; +typedef s32 compat_key_t; typedef s32 compat_int_t; typedef s32 compat_long_t; @@ -119,6 +120,64 @@ typedef u32 compat_sigset_ #define COMPAT_OFF_T_MAX 0x7fffffff #define COMPAT_LOFF_T_MAX 0x7fffffffffffffff +struct compat_ipc64_perm { + compat_key_t key; + compat_uid32_t uid; + compat_gid32_t gid; + compat_uid32_t cuid; + compat_gid32_t cgid; + unsigned short mode; + unsigned short __pad1; + unsigned short seq; + unsigned short __pad2; + compat_ulong_t unused1; + compat_ulong_t unused2; +}; + +struct compat_semid64_ds { + struct compat_ipc64_perm sem_perm; + compat_time_t sem_otime; + compat_ulong_t __unused1; + compat_time_t sem_ctime; + compat_ulong_t __unused2; + compat_ulong_t sem_nsems; + compat_ulong_t __unused3; + compat_ulong_t __unused4; +}; + +struct compat_msqid64_ds { + struct compat_ipc64_perm msg_perm; + compat_time_t msg_stime; + compat_ulong_t __unused1; + compat_time_t msg_rtime; + compat_ulong_t __unused2; + compat_time_t msg_ctime; + compat_ulong_t __unused3; + compat_ulong_t msg_cbytes; + compat_ulong_t msg_qnum; + compat_ulong_t msg_qbytes; + compat_pid_t msg_lspid; + compat_pid_t msg_lrpid; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; + +struct compat_shmid64_ds { + struct compat_ipc64_perm shm_perm; + compat_size_t shm_segsz; + compat_time_t shm_atime; + compat_ulong_t __unused1; + compat_time_t shm_dtime; + compat_ulong_t __unused2; + compat_time_t shm_ctime; + compat_ulong_t __unused3; + compat_pid_t shm_cpid; + compat_pid_t shm_lpid; + compat_ulong_t shm_nattch; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; + /* * A pointer passed in from user mode. This should not * be used for syscall parameters, just declare them diff -puN arch/ia64/ia32/sys_ia32.c~compat-generic-ipc-emulation arch/ia64/ia32/sys_ia32.c --- 25/arch/ia64/ia32/sys_ia32.c~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/ia64/ia32/sys_ia32.c Mon Mar 1 14:47:36 2004 @@ -1023,143 +1023,6 @@ sys32_writev (int fd, struct compat_iove return ret; } -/* - * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.. - * - * This is really horribly ugly. - */ - -struct msgbuf32 { s32 mtype; char mtext[1]; }; - -struct ipc_perm32 { - key_t key; - compat_uid_t uid; - compat_gid_t gid; - compat_uid_t cuid; - compat_gid_t cgid; - compat_mode_t mode; - unsigned short seq; -}; - -struct ipc64_perm32 { - key_t key; - compat_uid32_t uid; - compat_gid32_t gid; - compat_uid32_t cuid; - compat_gid32_t cgid; - compat_mode_t mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - unsigned int unused1; - unsigned int unused2; -}; - -struct semid_ds32 { - struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ - compat_time_t sem_otime; /* last semop time */ - compat_time_t 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_perm32 sem_perm; - compat_time_t sem_otime; - unsigned int __unused1; - compat_time_t sem_ctime; - unsigned int __unused2; - unsigned int sem_nsems; - unsigned int __unused3; - unsigned int __unused4; -}; - -struct msqid_ds32 { - struct ipc_perm32 msg_perm; - u32 msg_first; - u32 msg_last; - compat_time_t msg_stime; - compat_time_t msg_rtime; - compat_time_t msg_ctime; - u32 wwait; - u32 rwait; - unsigned short msg_cbytes; - unsigned short msg_qnum; - unsigned short msg_qbytes; - compat_ipc_pid_t msg_lspid; - compat_ipc_pid_t msg_lrpid; -}; - -struct msqid64_ds32 { - struct ipc64_perm32 msg_perm; - compat_time_t msg_stime; - unsigned int __unused1; - compat_time_t msg_rtime; - unsigned int __unused2; - compat_time_t msg_ctime; - unsigned int __unused3; - unsigned int msg_cbytes; - unsigned int msg_qnum; - unsigned int msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - unsigned int __unused4; - unsigned int __unused5; -}; - -struct shmid_ds32 { - struct ipc_perm32 shm_perm; - int shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; - compat_ipc_pid_t shm_cpid; - compat_ipc_pid_t shm_lpid; - unsigned short shm_nattch; -}; - -struct shmid64_ds32 { - struct ipc64_perm32 shm_perm; - compat_size_t shm_segsz; - compat_time_t shm_atime; - unsigned int __unused1; - compat_time_t shm_dtime; - unsigned int __unused2; - compat_time_t shm_ctime; - unsigned int __unused3; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - unsigned int shm_nattch; - unsigned int __unused4; - unsigned int __unused5; -}; - -struct shminfo64_32 { - unsigned int shmmax; - unsigned int shmmin; - unsigned int shmmni; - unsigned int shmseg; - unsigned int shmall; - unsigned int __unused1; - unsigned int __unused2; - unsigned int __unused3; - unsigned int __unused4; -}; - -struct shm_info32 { - int used_ids; - u32 shm_tot, shm_rss, shm_swp; - u32 swap_attempts, swap_successes; -}; - -struct ipc_kludge { - u32 msgp; - s32 msgtyp; -}; - #define SEMOP 1 #define SEMGET 2 #define SEMCTL 3 @@ -1173,454 +1036,6 @@ struct ipc_kludge { #define SHMGET 23 #define SHMCTL 24 -#define IPCOP_MASK(__x) (1UL << (__x)) - -static int -ipc_parse_version32 (int *cmd) -{ - if (*cmd & IPC_64) { - *cmd ^= IPC_64; - return IPC_64; - } else { - return IPC_OLD; - } -} - -static int -semctl32 (int first, int second, int third, void *uptr) -{ - union semun fourth; - u32 pad; - int err = 0, err2; - struct semid64_ds s; - mm_segment_t old_fs; - int version = ipc_parse_version32(&third); - - if (!uptr) - return -EINVAL; - if (get_user(pad, (u32 *)uptr)) - return -EFAULT; - if (third == SETVAL) - fourth.val = (int)pad; - else - fourth.__pad = (void *)A(pad); - switch (third) { - default: - err = -EINVAL; - break; - - case IPC_INFO: - case IPC_RMID: - case IPC_SET: - case SEM_INFO: - case GETVAL: - case GETPID: - case GETNCNT: - case GETZCNT: - case GETALL: - case SETVAL: - case SETALL: - err = sys_semctl(first, second, third, fourth); - break; - - case IPC_STAT: - case SEM_STAT: - fourth.__pad = &s; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_semctl(first, second, third, fourth); - set_fs(old_fs); - - if (version == IPC_64) { - struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad); - - if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { - err = -EFAULT; - break; - } - err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); - err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); - err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); - err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); - err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); - err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); - err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); - err2 |= __put_user(s.sem_otime, &usp64->sem_otime); - err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); - err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); - } else { - struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad); - - if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { - err = -EFAULT; - break; - } - err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); - err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); - err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); - err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); - err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); - err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); - err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); - err2 |= __put_user(s.sem_otime, &usp32->sem_otime); - err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); - err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); - } - if (err2) - err = -EFAULT; - break; - } - return err; -} - -static int -do_sys32_msgsnd (int first, int second, int third, void *uptr) -{ - struct msgbuf *p = kmalloc(second + sizeof(struct msgbuf), 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), GFP_USER); - if (!p) - goto out; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgrcv(first, p, second, 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 -msgctl32 (int first, int second, void *uptr) -{ - int err = -EINVAL, err2; - struct msqid64_ds m64; - struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr; - struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr; - mm_segment_t old_fs; - int version = ipc_parse_version32(&second); - - switch (second) { - case IPC_INFO: - case IPC_RMID: - case MSG_INFO: - err = sys_msgctl(first, second, (struct msqid_ds *)uptr); - break; - - case IPC_SET: - if (version == IPC_64) { - err = get_user(m64.msg_perm.uid, &up64->msg_perm.uid); - err |= get_user(m64.msg_perm.gid, &up64->msg_perm.gid); - err |= get_user(m64.msg_perm.mode, &up64->msg_perm.mode); - err |= get_user(m64.msg_qbytes, &up64->msg_qbytes); - } else { - err = get_user(m64.msg_perm.uid, &up32->msg_perm.uid); - err |= get_user(m64.msg_perm.gid, &up32->msg_perm.gid); - err |= get_user(m64.msg_perm.mode, &up32->msg_perm.mode); - err |= get_user(m64.msg_qbytes, &up32->msg_qbytes); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second, (struct msqid_ds *)&m64); - set_fs(old_fs); - break; - - case IPC_STAT: - case MSG_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second, (struct msqid_ds *)&m64); - set_fs(old_fs); - - if (version == IPC_64) { - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key); - err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid); - err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid); - err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid); - err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid); - err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode); - err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq); - err2 |= __put_user(m64.msg_stime, &up64->msg_stime); - err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime); - err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime); - err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes); - err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum); - err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes); - err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid); - err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid); - if (err2) - err = -EFAULT; - } else { - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key); - err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid); - err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid); - err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid); - err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid); - err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode); - err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq); - err2 |= __put_user(m64.msg_stime, &up32->msg_stime); - err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime); - err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime); - err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes); - err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum); - err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes); - err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid); - err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid); - if (err2) - err = -EFAULT; - } - break; - } - return err; -} - -static int -shmat32 (int first, int second, int third, int version, void *uptr) -{ - unsigned long raddr; - u32 *uaddr = (u32 *)A((u32)third); - int err; - - if (version == 1) - return -EINVAL; /* iBCS2 emulator entry point: unsupported */ - err = do_shmat(first, uptr, second, &raddr); - if (err) - return err; - return put_user(raddr, uaddr); -} - -static int -shmctl32 (int first, int second, void *uptr) -{ - int err = -EFAULT, err2; - - struct shmid64_ds s64; - struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr; - struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr; - mm_segment_t old_fs; - struct shm_info32 *uip = (struct shm_info32 *)uptr; - struct shm_info si; - int version = ipc_parse_version32(&second); - struct shminfo64 smi; - struct shminfo *usi32 = (struct shminfo *) uptr; - struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr; - - switch (second) { - case IPC_INFO: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (struct shmid_ds *)&smi); - set_fs(old_fs); - - if (version == IPC_64) { - if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) { - err = -EFAULT; - break; - } - err2 = __put_user(smi.shmmax, &usi64->shmmax); - err2 |= __put_user(smi.shmmin, &usi64->shmmin); - err2 |= __put_user(smi.shmmni, &usi64->shmmni); - err2 |= __put_user(smi.shmseg, &usi64->shmseg); - err2 |= __put_user(smi.shmall, &usi64->shmall); - } else { - if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) { - err = -EFAULT; - break; - } - err2 = __put_user(smi.shmmax, &usi32->shmmax); - err2 |= __put_user(smi.shmmin, &usi32->shmmin); - err2 |= __put_user(smi.shmmni, &usi32->shmmni); - err2 |= __put_user(smi.shmseg, &usi32->shmseg); - err2 |= __put_user(smi.shmall, &usi32->shmall); - } - if (err2) - err = -EFAULT; - break; - - case IPC_RMID: - case SHM_LOCK: - case SHM_UNLOCK: - err = sys_shmctl(first, second, (struct shmid_ds *)uptr); - break; - - case IPC_SET: - if (version == IPC_64) { - err = get_user(s64.shm_perm.uid, &up64->shm_perm.uid); - err |= get_user(s64.shm_perm.gid, &up64->shm_perm.gid); - err |= get_user(s64.shm_perm.mode, &up64->shm_perm.mode); - } else { - err = get_user(s64.shm_perm.uid, &up32->shm_perm.uid); - err |= get_user(s64.shm_perm.gid, &up32->shm_perm.gid); - err |= get_user(s64.shm_perm.mode, &up32->shm_perm.mode); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (struct shmid_ds *)&s64); - set_fs(old_fs); - break; - - case IPC_STAT: - case SHM_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (struct shmid_ds *)&s64); - set_fs(old_fs); - if (err < 0) - break; - if (version == IPC_64) { - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up64->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); - } else { - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up32->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); - } - if (err2) - err = -EFAULT; - break; - - case SHM_INFO: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (void *)&si); - set_fs(old_fs); - if (err < 0) - break; - - if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) { - err = -EFAULT; - break; - } - err2 = __put_user(si.used_ids, &uip->used_ids); - err2 |= __put_user(si.shm_tot, &uip->shm_tot); - err2 |= __put_user(si.shm_rss, &uip->shm_rss); - err2 |= __put_user(si.shm_swp, &uip->shm_swp); - err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); - err2 |= __put_user(si.swap_successes, &uip->swap_successes); - if (err2) - err = -EFAULT; - break; - - } - return err; -} - -extern int sem_ctls[]; -#define sc_semopm (sem_ctls[2]) - -static long -semtimedop32(int semid, struct sembuf *tsops, int nsops, - struct compat_timespec *timeout32) -{ - struct timespec t; - mm_segment_t oldfs; - long ret; - - /* parameter checking precedence should mirror sys_semtimedop() */ - if (nsops < 1 || semid < 0) - return -EINVAL; - if (nsops > sc_semopm) - return -E2BIG; - if (!access_ok(VERIFY_READ, tsops, nsops * sizeof(struct sembuf)) || - get_compat_timespec(&t, timeout32)) - return -EFAULT; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_semtimedop(semid, tsops, nsops, &t); - set_fs(oldfs); - return ret; -} - asmlinkage long sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) { @@ -1632,36 +1047,36 @@ sys32_ipc(u32 call, int first, int secon switch (call) { case SEMTIMEDOP: if (fifth) - return semtimedop32(first, (struct sembuf *)AA(ptr), - second, (struct compat_timespec *)AA(fifth)); + return compat_sys_semtimedop(first, compat_ptr(ptr), + second, compat_ptr(fifth)); /* else fall through for normal semop() */ case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ - return sys_semtimedop(first, (struct sembuf *)AA(ptr), second, + return sys_semtimedop(first, compat_ptr(ptr), second, NULL); case SEMGET: return sys_semget(first, second, third); case SEMCTL: - return semctl32(first, second, third, (void *)AA(ptr)); + return compat_sys_semctl(first, second, third, compat_ptr(ptr)); case MSGSND: - return do_sys32_msgsnd(first, second, third, (void *)AA(ptr)); + return compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); case MSGRCV: - return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr)); + return compat_sys_msgrcv(first, second, fifth, third, version, compat_ptr(ptr)); case MSGGET: return sys_msgget((key_t) first, second); case MSGCTL: - return msgctl32(first, second, (void *)AA(ptr)); + return compat_sys_msgctl(first, second, compat_ptr(ptr)); case SHMAT: - return shmat32(first, second, third, version, (void *)AA(ptr)); + return compat_sys_shmat(first, second, third, version, compat_ptr(ptr)); break; case SHMDT: - return sys_shmdt((char *)AA(ptr)); + return sys_shmdt(compat_ptr(ptr)); case SHMGET: return sys_shmget(first, second, third); case SHMCTL: - return shmctl32(first, second, (void *)AA(ptr)); + return compat_sys_shmctl(first, second, compat_ptr(ptr)); default: return -ENOSYS; diff -puN arch/ia64/Kconfig~compat-generic-ipc-emulation arch/ia64/Kconfig --- 25/arch/ia64/Kconfig~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/arch/ia64/Kconfig Mon Mar 1 14:47:36 2004 @@ -616,7 +616,11 @@ config DEBUG_INFO debugging info resulting in a larger kernel image. Say Y here only if you plan to use gdb to debug the kernel. If you don't debug the kernel, you can say N. - + +config SYSVIPC_COMPAT + bool + depends on COMPAT && SYSVIPC + default y endmenu source "security/Kconfig" diff -puN include/asm-ia64/compat.h~compat-generic-ipc-emulation include/asm-ia64/compat.h --- 25/include/asm-ia64/compat.h~compat-generic-ipc-emulation Mon Mar 1 14:47:36 2004 +++ 25-akpm/include/asm-ia64/compat.h Mon Mar 1 14:47:36 2004 @@ -26,6 +26,7 @@ typedef u16 compat_ipc_pid_t; typedef s32 compat_daddr_t; typedef u32 compat_caddr_t; typedef __kernel_fsid_t compat_fsid_t; +typedef s32 compat_key_t; typedef u32 compat_timer_t; typedef s32 compat_int_t; @@ -117,6 +118,64 @@ typedef u32 compat_sigset_word; #define COMPAT_OFF_T_MAX 0x7fffffff #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL +struct compat_ipc64_perm { + compat_key_t key; + compat_uid32_t uid; + compat_gid32_t gid; + compat_uid32_t cuid; + compat_gid32_t cgid; + unsigned short mode; + unsigned short __pad1; + unsigned short seq; + unsigned short __pad2; + compat_ulong_t unused1; + compat_ulong_t unused2; +}; + +struct compat_semid64_ds { + struct compat_ipc64_perm sem_perm; + compat_time_t sem_otime; + compat_ulong_t __unused1; + compat_time_t sem_ctime; + compat_ulong_t __unused2; + compat_ulong_t sem_nsems; + compat_ulong_t __unused3; + compat_ulong_t __unused4; +}; + +struct compat_msqid64_ds { + struct compat_ipc64_perm msg_perm; + compat_time_t msg_stime; + compat_ulong_t __unused1; + compat_time_t msg_rtime; + compat_ulong_t __unused2; + compat_time_t msg_ctime; + compat_ulong_t __unused3; + compat_ulong_t msg_cbytes; + compat_ulong_t msg_qnum; + compat_ulong_t msg_qbytes; + compat_pid_t msg_lspid; + compat_pid_t msg_lrpid; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; + +struct compat_shmid64_ds { + struct compat_ipc64_perm shm_perm; + compat_size_t shm_segsz; + compat_time_t shm_atime; + compat_ulong_t __unused1; + compat_time_t shm_dtime; + compat_ulong_t __unused2; + compat_time_t shm_ctime; + compat_ulong_t __unused3; + compat_pid_t shm_cpid; + compat_pid_t shm_lpid; + compat_ulong_t shm_nattch; + compat_ulong_t __unused4; + compat_ulong_t __unused5; +}; + /* * A pointer passed in from user mode. This should not be used for syscall parameters, * just declare them as pointers because the syscall entry code will have appropriately diff -puN include/linux/msg.h~compat-generic-ipc-emulation include/linux/msg.h _