diff options
Diffstat (limited to 'arch/x86_64/ia32/sys_ia32.c')
| -rw-r--r-- | arch/x86_64/ia32/sys_ia32.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c index f280d3665f4bed..c9bac3af29d6a7 100644 --- a/arch/x86_64/ia32/sys_ia32.c +++ b/arch/x86_64/ia32/sys_ia32.c @@ -76,6 +76,8 @@ int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf) { + compat_ino_t ino; + typeof(ubuf->st_uid) uid = 0; typeof(ubuf->st_gid) gid = 0; SET_UID(uid, kbuf->uid); @@ -84,9 +86,12 @@ int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf) return -EOVERFLOW; if (kbuf->size >= 0x7fffffff) return -EOVERFLOW; + ino = kbuf->ino; + if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino) + return -EOVERFLOW; if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) || __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) || - __put_user (kbuf->ino, &ubuf->st_ino) || + __put_user (ino, &ubuf->st_ino) || __put_user (kbuf->mode, &ubuf->st_mode) || __put_user (kbuf->nlink, &ubuf->st_nlink) || __put_user (uid, &ubuf->st_uid) || @@ -784,36 +789,36 @@ asmlinkage long sys32_olduname(struct oldold_utsname __user * name) if (!name) return -EFAULT; - if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname))) + if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname))) return -EFAULT; down_read(&uts_sem); - - err = __copy_to_user(&name->sysname,&system_utsname.sysname, + + err = __copy_to_user(&name->sysname,&utsname()->sysname, __OLD_UTS_LEN); err |= __put_user(0,name->sysname+__OLD_UTS_LEN); - err |= __copy_to_user(&name->nodename,&system_utsname.nodename, + err |= __copy_to_user(&name->nodename,&utsname()->nodename, __OLD_UTS_LEN); err |= __put_user(0,name->nodename+__OLD_UTS_LEN); - err |= __copy_to_user(&name->release,&system_utsname.release, + err |= __copy_to_user(&name->release,&utsname()->release, __OLD_UTS_LEN); err |= __put_user(0,name->release+__OLD_UTS_LEN); - err |= __copy_to_user(&name->version,&system_utsname.version, + err |= __copy_to_user(&name->version,&utsname()->version, __OLD_UTS_LEN); err |= __put_user(0,name->version+__OLD_UTS_LEN); - { - char *arch = "x86_64"; - if (personality(current->personality) == PER_LINUX32) - arch = "i686"; + { + char *arch = "x86_64"; + if (personality(current->personality) == PER_LINUX32) + arch = "i686"; - err |= __copy_to_user(&name->machine,arch,strlen(arch)+1); - } - - up_read(&uts_sem); - - err = err ? -EFAULT : 0; - - return err; + err |= __copy_to_user(&name->machine, arch, strlen(arch)+1); + } + + up_read(&uts_sem); + + err = err ? -EFAULT : 0; + + return err; } long sys32_uname(struct old_utsname __user * name) @@ -822,7 +827,7 @@ long sys32_uname(struct old_utsname __user * name) if (!name) return -EFAULT; down_read(&uts_sem); - err=copy_to_user(name, &system_utsname, sizeof (*name)); + err = copy_to_user(name, utsname(), sizeof (*name)); up_read(&uts_sem); if (personality(current->personality) == PER_LINUX32) err |= copy_to_user(&name->machine, "i686", 5); |