diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 286 |
1 files changed, 188 insertions, 98 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index b6dc6ccfa..ffdbb98e8 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -2006,7 +2006,8 @@ static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) return -TARGET_EFAULT; - target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr); + if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) + return -TARGET_EFAULT; host_sd->sem_nsems = tswapl(target_sd->sem_nsems); host_sd->sem_otime = tswapl(target_sd->sem_otime); host_sd->sem_ctime = tswapl(target_sd->sem_ctime); @@ -2021,7 +2022,8 @@ static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) return -TARGET_EFAULT; - host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)); + if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) + return -TARGET_EFAULT;; target_sd->sem_nsems = tswapl(host_sd->sem_nsems); target_sd->sem_otime = tswapl(host_sd->sem_otime); target_sd->sem_ctime = tswapl(host_sd->sem_ctime); @@ -2029,135 +2031,214 @@ static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, return 0; } +struct target_seminfo { + int semmap; + int semmni; + int semmns; + int semmnu; + int semmsl; + int semopm; + int semume; + int semusz; + int semvmx; + int semaem; +}; + +static inline abi_long host_to_target_seminfo(abi_ulong target_addr, + struct seminfo *host_seminfo) +{ + struct target_seminfo *target_seminfo; + if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) + return -TARGET_EFAULT; + __put_user(host_seminfo->semmap, &target_seminfo->semmap); + __put_user(host_seminfo->semmni, &target_seminfo->semmni); + __put_user(host_seminfo->semmns, &target_seminfo->semmns); + __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); + __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); + __put_user(host_seminfo->semopm, &target_seminfo->semopm); + __put_user(host_seminfo->semume, &target_seminfo->semume); + __put_user(host_seminfo->semusz, &target_seminfo->semusz); + __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); + __put_user(host_seminfo->semaem, &target_seminfo->semaem); + unlock_user_struct(target_seminfo, target_addr, 1); + return 0; +} + union semun { int val; struct semid_ds *buf; unsigned short *array; + struct seminfo *__buf; }; union target_semun { int val; - abi_long buf; - unsigned short int *array; + abi_ulong buf; + abi_ulong array; + abi_ulong __buf; }; -static inline abi_long target_to_host_semun(int cmd, - union semun *host_su, - abi_ulong target_addr, - struct semid_ds *ds) +static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, + abi_ulong target_addr) { - union target_semun *target_su; + int nsems; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + int i, ret; - switch( cmd ) { - case IPC_STAT: - case IPC_SET: - if (!lock_user_struct(VERIFY_READ, target_su, target_addr, 1)) - return -TARGET_EFAULT; - target_to_host_semid_ds(ds,target_su->buf); - host_su->buf = ds; - unlock_user_struct(target_su, target_addr, 0); - break; - case GETVAL: - case SETVAL: - if (!lock_user_struct(VERIFY_READ, target_su, target_addr, 1)) - return -TARGET_EFAULT; - host_su->val = tswapl(target_su->val); - unlock_user_struct(target_su, target_addr, 0); - break; - case GETALL: - case SETALL: - if (!lock_user_struct(VERIFY_READ, target_su, target_addr, 1)) - return -TARGET_EFAULT; - *host_su->array = tswap16(*target_su->array); - unlock_user_struct(target_su, target_addr, 0); - break; - default: - gemu_log("semun operation not fully supported: %d\n", (int)cmd); + semun.buf = &semid_ds; + + ret = semctl(semid, 0, IPC_STAT, semun); + if (ret == -1) + return get_errno(ret); + + nsems = semid_ds.sem_nsems; + + *host_array = malloc(nsems*sizeof(unsigned short)); + array = lock_user(VERIFY_READ, target_addr, + nsems*sizeof(unsigned short), 1); + if (!array) + return -TARGET_EFAULT; + + for(i=0; i<nsems; i++) { + __get_user((*host_array)[i], &array[i]); } + unlock_user(array, target_addr, 0); + return 0; } -static inline abi_long host_to_target_semun(int cmd, - abi_ulong target_addr, - union semun *host_su, - struct semid_ds *ds) +static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, + unsigned short **host_array) { - union target_semun *target_su; + int nsems; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + int i, ret; - switch( cmd ) { - case IPC_STAT: - case IPC_SET: - if (lock_user_struct(VERIFY_WRITE, target_su, target_addr, 0)) - return -TARGET_EFAULT; - host_to_target_semid_ds(target_su->buf,ds); - unlock_user_struct(target_su, target_addr, 1); - break; - case GETVAL: - case SETVAL: - if (lock_user_struct(VERIFY_WRITE, target_su, target_addr, 0)) - return -TARGET_EFAULT; - target_su->val = tswapl(host_su->val); - unlock_user_struct(target_su, target_addr, 1); - break; - case GETALL: - case SETALL: - if (lock_user_struct(VERIFY_WRITE, target_su, target_addr, 0)) - return -TARGET_EFAULT; - *target_su->array = tswap16(*host_su->array); - unlock_user_struct(target_su, target_addr, 1); - break; - default: - gemu_log("semun operation not fully supported: %d\n", (int)cmd); + semun.buf = &semid_ds; + + ret = semctl(semid, 0, IPC_STAT, semun); + if (ret == -1) + return get_errno(ret); + + nsems = semid_ds.sem_nsems; + + array = lock_user(VERIFY_WRITE, target_addr, + nsems*sizeof(unsigned short), 0); + if (!array) + return -TARGET_EFAULT; + + for(i=0; i<nsems; i++) { + __put_user((*host_array)[i], &array[i]); } + free(*host_array); + unlock_user(array, target_addr, 1); + return 0; } -static inline abi_long do_semctl(int first, int second, int third, - abi_long ptr) +static inline abi_long do_semctl(int semid, int semnum, int cmd, + union target_semun target_su) { union semun arg; struct semid_ds dsarg; - int cmd = third&0xff; - abi_long ret = 0; + unsigned short *array; + struct seminfo seminfo; + abi_long ret = -TARGET_EINVAL; + abi_long err; + cmd &= 0xff; switch( cmd ) { case GETVAL: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); - break; case SETVAL: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); + arg.val = tswapl(target_su.val); + ret = get_errno(semctl(semid, semnum, cmd, arg)); + target_su.val = tswapl(arg.val); break; case GETALL: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); - break; case SETALL: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); + err = target_to_host_semarray(semid, &array, target_su.array); + if (err) + return err; + arg.array = array; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_semarray(semid, target_su.array, &array); + if (err) + return err; break; case IPC_STAT: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); - break; case IPC_SET: - target_to_host_semun(cmd,&arg,ptr,&dsarg); - ret = get_errno(semctl(first, second, cmd, arg)); - host_to_target_semun(cmd,ptr,&arg,&dsarg); + case SEM_STAT: + err = target_to_host_semid_ds(&dsarg, target_su.buf); + if (err) + return err; + arg.buf = &dsarg; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_semid_ds(target_su.buf, &dsarg); + if (err) + return err; + break; + case IPC_INFO: + case SEM_INFO: + arg.__buf = &seminfo; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_seminfo(target_su.__buf, &seminfo); + if (err) + return err; + break; + case IPC_RMID: + case GETPID: + case GETNCNT: + case GETZCNT: + ret = get_errno(semctl(semid, semnum, cmd, NULL)); break; - default: - ret = get_errno(semctl(first, second, cmd, arg)); } return ret; } +struct target_sembuf { + unsigned short sem_num; + short sem_op; + short sem_flg; +}; + +static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, + abi_ulong target_addr, + unsigned nsops) +{ + struct target_sembuf *target_sembuf; + int i; + + target_sembuf = lock_user(VERIFY_READ, target_addr, + nsops*sizeof(struct target_sembuf), 1); + if (!target_sembuf) + return -TARGET_EFAULT; + + for(i=0; i<nsops; i++) { + __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); + __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); + __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); + } + + unlock_user(target_sembuf, target_addr, 0); + + return 0; +} + +static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) +{ + struct sembuf sops[nsops]; + + if (target_to_host_sembuf(sops, ptr, nsops)) + return -TARGET_EFAULT; + + return semop(semid, sops, nsops); +} + struct target_msqid_ds { struct target_ipc_perm msg_perm; @@ -2361,7 +2442,7 @@ static abi_long do_ipc(unsigned int call, int first, switch (call) { case IPCOP_semop: - ret = get_errno(semop(first,(struct sembuf *)g2h(ptr), second)); + ret = do_semop(first, ptr, second); break; case IPCOP_semget: @@ -2369,12 +2450,7 @@ static abi_long do_ipc(unsigned int call, int first, break; case IPCOP_semctl: - ret = do_semctl(first, second, third, ptr); - break; - - case IPCOP_semtimedop: - gemu_log("Unsupported ipc call: %d (version %d)\n", call, version); - ret = -TARGET_ENOSYS; + ret = do_semctl(first, second, third, (union target_semun)(abi_ulong) ptr); break; case IPCOP_msgget: @@ -5200,7 +5276,21 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6); break; #endif - +#ifdef TARGET_NR_semget + case TARGET_NR_semget: + ret = get_errno(semget(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_semop + case TARGET_NR_semop: + ret = get_errno(do_semop(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_semctl + case TARGET_NR_semctl: + ret = do_semctl(arg1, arg2, arg3, (union target_semun)(abi_ulong)arg4); + break; +#endif #ifdef TARGET_NR_msgctl case TARGET_NR_msgctl: ret = do_msgctl(arg1, arg2, arg3); 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