/* * 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 <arun.sharma@intel.com> * Copyright (C) 2000 VA Linux Co * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> * Copyright (C) 2000 Hewlett-Packard Co. * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> * 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 <linux/compat.h>#include <linux/errno.h>#include <linux/highuid.h>#include <linux/init.h>#include <linux/msg.h>#include <linux/shm.h>#include <linux/syscalls.h>#include <linux/ptrace.h> #include <linux/mutex.h>#include <asm/uaccess.h> #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]) static inline int compat_ipc_parse_version(int *cmd){#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC 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;#else /* With the asm-generic APIs, we always use the 64-bit versions. */ return IPC_64;#endif} static inline int __get_compat_ipc64_perm(struct ipc64_perm *p64, struct compat_ipc64_perm __user *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 __user *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 __user *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 __user *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 __user *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 __user *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 __user *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 __user *up){ int err; if (!access_ok (VERIFY_WRITE, up, sizeof(*up))) return -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 long do_compat_semctl(int first, int second, int third, u32 pad){ union semun fourth; int err, err2; struct semid64_ds s64; struct semid64_ds __user *up64; int version = compat_ipc_parse_version(&third); memset(&s64, 0, sizeof(s64)); 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: up64 = compat_alloc_user_space(sizeof(s64)); fourth.__pad = up64; err = sys_semctl(first, second, third, fourth); if (err < 0) break; if (copy_from_user(&s64, up64, sizeof(s64))) err2 = -EFAULT; else 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)); } up64 = compat_alloc_user_space(sizeof(s64)); if (copy_to_user(up64, &s64, sizeof(s64))) err = -EFAULT; if (err) break; fourth.__pad = up64; err = sys_semctl(first, second, third, fourth); break; default: err = -EINVAL; break; } return err;} #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPClong compat_sys_semctl(int first, int second, int third, void __user *uptr){ u32 pad; if (!uptr) return -EINVAL; if (get_user(pad, (u32 __user *) uptr)) return -EFAULT; return do_compat_semctl(first, second, third, pad);} long compat_sys_msgsnd(int first, int second, int third, void __user *uptr){ struct compat_msgbuf __user *up = uptr; long type; if (first < 0) return -EINVAL; if (second < 0) return -EINVAL; if (get_user(type, &up->mtype)) return -EFAULT; return do_msgsnd(first, type, up->mtext, second, third);} long compat_sys_msgrcv(int first, int second, int msgtyp, int third, int version, void __user *uptr){ struct compat_msgbuf __user *up; long type; int err; if (first < 0) return -EINVAL; if (second < 0) return -EINVAL; if (!version) { struct compat_ipc_kludge ipck; err = -EINVAL; if (!uptr) goto out; err = -EFAULT; if (copy_from_user (&ipck, uptr, sizeof(ipck))) goto out; uptr = compat_ptr(ipck.msgp); msgtyp = ipck.msgtyp; } up = uptr; err = do_msgrcv(first, &type, up->mtext, second, msgtyp, third); if (err < 0) goto out; if (put_user(type, &up->mtype)) err = -EFAULT;out: return err;}#elselong compat_sys_semctl(int semid, int semnum, int cmd, int arg){ return do_compat_semctl(semid, semnum, cmd, arg);} long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp, size_t msgsz, int msgflg){ compat_long_t mtype; if (get_user(mtype, &msgp->mtype)) return -EFAULT; return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg);} long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp, size_t msgsz, long msgtyp, int msgflg){ long err, mtype; err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg); if (err < 0) goto out; if (put_user(mtype, &msgp->mtype)) err = -EFAULT; out: return err;}#endif 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 *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;} 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); void __user *p; memset(&m64, 0, sizeof(m64)); 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; p = compat_alloc_user_space(sizeof(m64)); if (copy_to_user(p, &m64, sizeof(m64))) err = -EFAULT; else err = sys_msgctl(first, second, p); break; case IPC_STAT: case MSG_STAT: p = compat_alloc_user_space(sizeof(m64)); err = sys_msgctl(first, second, p); if (err < 0) break; if (copy_from_user(&m64, p, sizeof(m64)))Lines 1–500 of 745. Load more
/* * 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 <arun.sharma@intel.com> * Copyright (C) 2000 VA Linux Co * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> * Copyright (C) 2000 Hewlett-Packard Co. * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> * 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 <linux/compat.h> #include <linux/errno.h> #include <linux/highuid.h> #include <linux/init.h> #include <linux/msg.h> #include <linux/shm.h> #include <linux/syscalls.h> #include <linux/ptrace.h> #include <linux/mutex.h> #include <asm/uaccess.h> #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]) static inline int compat_ipc_parse_version(int *cmd) { #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC 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; #else /* With the asm-generic APIs, we always use the 64-bit versions. */ return IPC_64; #endif } static inline int __get_compat_ipc64_perm(struct ipc64_perm *p64, struct compat_ipc64_perm __user *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 __user *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 __user *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 __user *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 __user *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 __user *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 __user *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 __user *up) { int err; if (!access_ok (VERIFY_WRITE, up, sizeof(*up))) return -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 long do_compat_semctl(int first, int second, int third, u32 pad) { union semun fourth; int err, err2; struct semid64_ds s64; struct semid64_ds __user *up64; int version = compat_ipc_parse_version(&third); memset(&s64, 0, sizeof(s64)); 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: up64 = compat_alloc_user_space(sizeof(s64)); fourth.__pad = up64; err = sys_semctl(first, second, third, fourth); if (err < 0) break; if (copy_from_user(&s64, up64, sizeof(s64))) err2 = -EFAULT; else 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)); } up64 = compat_alloc_user_space(sizeof(s64)); if (copy_to_user(up64, &s64, sizeof(s64))) err = -EFAULT; if (err) break; fourth.__pad = up64; err = sys_semctl(first, second, third, fourth); break; default: err = -EINVAL; break; } return err; } #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC long compat_sys_semctl(int first, int second, int third, void __user *uptr) { u32 pad; if (!uptr) return -EINVAL; if (get_user(pad, (u32 __user *) uptr)) return -EFAULT; return do_compat_semctl(first, second, third, pad); } long compat_sys_msgsnd(int first, int second, int third, void __user *uptr) { struct compat_msgbuf __user *up = uptr; long type; if (first < 0) return -EINVAL; if (second < 0) return -EINVAL; if (get_user(type, &up->mtype)) return -EFAULT; return do_msgsnd(first, type, up->mtext, second, third); } long compat_sys_msgrcv(int first, int second, int msgtyp, int third, int version, void __user *uptr) { struct compat_msgbuf __user *up; long type; int err; if (first < 0) return -EINVAL; if (second < 0) return -EINVAL; if (!version) { struct compat_ipc_kludge ipck; err = -EINVAL; if (!uptr) goto out; err = -EFAULT; if (copy_from_user (&ipck, uptr, sizeof(ipck))) goto out; uptr = compat_ptr(ipck.msgp); msgtyp = ipck.msgtyp; } up = uptr; err = do_msgrcv(first, &type, up->mtext, second, msgtyp, third); if (err < 0) goto out; if (put_user(type, &up->mtype)) err = -EFAULT; out: return err; } #else long compat_sys_semctl(int semid, int semnum, int cmd, int arg) { return do_compat_semctl(semid, semnum, cmd, arg); } long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp, size_t msgsz, int msgflg) { compat_long_t mtype; if (get_user(mtype, &msgp->mtype)) return -EFAULT; return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg); } long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp, size_t msgsz, long msgtyp, int msgflg) { long err, mtype; err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg); if (err < 0) goto out; if (put_user(mtype, &msgp->mtype)) err = -EFAULT; out: return err; } #endif 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 *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; } 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); void __user *p; memset(&m64, 0, sizeof(m64)); 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; p = compat_alloc_user_space(sizeof(m64)); if (copy_to_user(p, &m64, sizeof(m64))) err = -EFAULT; else err = sys_msgctl(first, second, p); break; case IPC_STAT: case MSG_STAT: p = compat_alloc_user_space(sizeof(m64)); err = sys_msgctl(first, second, p); if (err < 0) break; if (copy_from_user(&m64, p, sizeof(m64)))