#include <linux/namei.h>
#include <linux/file.h>
#include <linux/vfs.h>
-#include <linux/ioctl32.h>
#include <linux/ioctl.h>
#include <linux/init.h>
-#include <linux/sockios.h> /* for SIOCDEVPRIVATE */
#include <linux/smb.h>
#include <linux/smb_mount.h>
#include <linux/ncp_mount.h>
#include <linux/personality.h>
#include <linux/rwsem.h>
#include <linux/tsacct_kern.h>
+#include <linux/security.h>
#include <linux/highmem.h>
+#include <linux/signal.h>
#include <linux/poll.h>
#include <linux/mm.h>
#include <linux/eventpoll.h>
-#include <net/sock.h> /* siocdevprivate_ioctl */
-
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/ioctls.h>
*/
asmlinkage long compat_sys_utime(char __user *filename, struct compat_utimbuf __user *t)
{
- struct timeval tv[2];
+ struct timespec tv[2];
if (t) {
if (get_user(tv[0].tv_sec, &t->actime) ||
get_user(tv[1].tv_sec, &t->modtime))
return -EFAULT;
- tv[0].tv_usec = 0;
- tv[1].tv_usec = 0;
+ tv[0].tv_nsec = 0;
+ tv[1].tv_nsec = 0;
+ }
+ return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
+}
+
+asmlinkage long compat_sys_utimensat(unsigned int dfd, char __user *filename, struct compat_timespec __user *t, int flags)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (get_compat_timespec(&tv[0], &t[0]) ||
+ get_compat_timespec(&tv[1], &t[1]))
+ return -EFAULT;
+
+ if ((tv[0].tv_nsec == UTIME_OMIT || tv[0].tv_nsec == UTIME_NOW)
+ && tv[0].tv_sec != 0)
+ return -EINVAL;
+ if ((tv[1].tv_nsec == UTIME_OMIT || tv[1].tv_nsec == UTIME_NOW)
+ && tv[1].tv_sec != 0)
+ return -EINVAL;
+
+ if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
+ return 0;
}
- return do_utimes(AT_FDCWD, filename, t ? tv : NULL);
+ return do_utimes(dfd, filename, t ? tv : NULL, flags);
}
asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, struct compat_timeval __user *t)
{
- struct timeval tv[2];
+ struct timespec tv[2];
if (t) {
if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
- get_user(tv[0].tv_usec, &t[0].tv_usec) ||
+ get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
get_user(tv[1].tv_sec, &t[1].tv_sec) ||
- get_user(tv[1].tv_usec, &t[1].tv_usec))
+ get_user(tv[1].tv_nsec, &t[1].tv_usec))
return -EFAULT;
+ if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
+ tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
+ return -EINVAL;
+ tv[0].tv_nsec *= 1000;
+ tv[1].tv_nsec *= 1000;
}
- return do_utimes(dfd, filename, t ? tv : NULL);
+ return do_utimes(dfd, filename, t ? tv : NULL, 0);
}
asmlinkage long compat_sys_utimes(char __user *filename, struct compat_timeval __user *t)
error = user_path_walk(path, &nd);
if (!error) {
struct kstatfs tmp;
- error = vfs_statfs(nd.dentry, &tmp);
+ error = vfs_statfs(nd.path.dentry, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
path_release(&nd);
error = user_path_walk(path, &nd);
if (!error) {
struct kstatfs tmp;
- error = vfs_statfs(nd.dentry, &tmp);
+ error = vfs_statfs(nd.path.dentry, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
path_release(&nd);
return error;
}
-/* ioctl32 stuff, used by sparc64, parisc, s390x, ppc64, x86_64, MIPS */
-
-#define IOCTL_HASHSIZE 256
-static struct ioctl_trans *ioctl32_hash_table[IOCTL_HASHSIZE];
-
-static inline unsigned long ioctl32_hash(unsigned long cmd)
-{
- return (((cmd >> 6) ^ (cmd >> 4) ^ cmd)) % IOCTL_HASHSIZE;
-}
-
-static void ioctl32_insert_translation(struct ioctl_trans *trans)
-{
- unsigned long hash;
- struct ioctl_trans *t;
-
- hash = ioctl32_hash (trans->cmd);
- if (!ioctl32_hash_table[hash])
- ioctl32_hash_table[hash] = trans;
- else {
- t = ioctl32_hash_table[hash];
- while (t->next)
- t = t->next;
- trans->next = NULL;
- t->next = trans;
- }
-}
-
-static int __init init_sys32_ioctl(void)
-{
- int i;
-
- for (i = 0; i < ioctl_table_size; i++) {
- if (ioctl_start[i].next != 0) {
- printk("ioctl translation %d bad\n",i);
- return -1;
- }
-
- ioctl32_insert_translation(&ioctl_start[i]);
- }
- return 0;
-}
-
-__initcall(init_sys32_ioctl);
-
-static void compat_ioctl_error(struct file *filp, unsigned int fd,
- unsigned int cmd, unsigned long arg)
-{
- char buf[10];
- char *fn = "?";
- char *path;
-
- /* find the name of the device. */
- path = (char *)__get_free_page(GFP_KERNEL);
- if (path) {
- fn = d_path(filp->f_path.dentry, filp->f_path.mnt, path, PAGE_SIZE);
- if (IS_ERR(fn))
- fn = "?";
- }
-
- sprintf(buf,"'%c'", (cmd>>_IOC_TYPESHIFT) & _IOC_TYPEMASK);
- if (!isprint(buf[1]))
- sprintf(buf, "%02x", buf[1]);
- compat_printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
- "cmd(%08x){t:%s;sz:%u} arg(%08x) on %s\n",
- current->comm, current->pid,
- (int)fd, (unsigned int)cmd, buf,
- (cmd >> _IOC_SIZESHIFT) & _IOC_SIZEMASK,
- (unsigned int)arg, fn);
-
- if (path)
- free_page((unsigned long)path);
-}
-
-asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
- unsigned long arg)
-{
- struct file *filp;
- int error = -EBADF;
- struct ioctl_trans *t;
- int fput_needed;
-
- filp = fget_light(fd, &fput_needed);
- if (!filp)
- goto out;
-
- /* RED-PEN how should LSM module know it's handling 32bit? */
- error = security_file_ioctl(filp, cmd, arg);
- if (error)
- goto out_fput;
-
- /*
- * To allow the compat_ioctl handlers to be self contained
- * we need to check the common ioctls here first.
- * Just handle them with the standard handlers below.
- */
- switch (cmd) {
- case FIOCLEX:
- case FIONCLEX:
- case FIONBIO:
- case FIOASYNC:
- case FIOQSIZE:
- break;
-
- case FIBMAP:
- case FIGETBSZ:
- case FIONREAD:
- if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
- break;
- /*FALL THROUGH*/
-
- default:
- if (filp->f_op && filp->f_op->compat_ioctl) {
- error = filp->f_op->compat_ioctl(filp, cmd, arg);
- if (error != -ENOIOCTLCMD)
- goto out_fput;
- }
-
- if (!filp->f_op ||
- (!filp->f_op->ioctl && !filp->f_op->unlocked_ioctl))
- goto do_ioctl;
- break;
- }
-
- for (t = ioctl32_hash_table[ioctl32_hash(cmd)]; t; t = t->next) {
- if (t->cmd == cmd)
- goto found_handler;
- }
-
- if (S_ISSOCK(filp->f_path.dentry->d_inode->i_mode) &&
- cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
- error = siocdevprivate_ioctl(fd, cmd, arg);
- } else {
- static int count;
-
- if (++count <= 50)
- compat_ioctl_error(filp, fd, cmd, arg);
- error = -EINVAL;
- }
-
- goto out_fput;
-
- found_handler:
- if (t->handler) {
- lock_kernel();
- error = t->handler(fd, cmd, arg, filp);
- unlock_kernel();
- goto out_fput;
- }
-
- do_ioctl:
- error = vfs_ioctl(filp, fd, cmd, arg);
- out_fput:
- fput_light(filp, fput_needed);
- out:
- return error;
-}
-
static int get_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
{
if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
if (ret < 0)
goto out;
- ret = security_file_permission(file, type == READ ? MAY_READ:MAY_WRITE);
- if (ret)
- goto out;
-
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
{
struct page *kmapped_page = NULL;
char *kaddr = NULL;
+ unsigned long kpos = 0;
int ret;
while (argc-- > 0) {
unsigned long pos;
if (get_user(str, argv+argc) ||
- !(len = strnlen_user(compat_ptr(str), bprm->p))) {
+ !(len = strnlen_user(compat_ptr(str), MAX_ARG_STRLEN))) {
ret = -EFAULT;
goto out;
}
- if (bprm->p < len) {
+ if (len > MAX_ARG_STRLEN) {
ret = -E2BIG;
goto out;
}
- bprm->p -= len;
- /* XXX: add architecture specific overflow check here. */
+ /* We're going to work our way backwords. */
pos = bprm->p;
+ str += len;
+ bprm->p -= len;
while (len > 0) {
- int i, new, err;
int offset, bytes_to_copy;
- struct page *page;
offset = pos % PAGE_SIZE;
- i = pos/PAGE_SIZE;
- page = bprm->page[i];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_HIGHUSER);
- bprm->page[i] = page;
- if (!page) {
- ret = -ENOMEM;
+ if (offset == 0)
+ offset = PAGE_SIZE;
+
+ bytes_to_copy = offset;
+ if (bytes_to_copy > len)
+ bytes_to_copy = len;
+
+ offset -= bytes_to_copy;
+ pos -= bytes_to_copy;
+ str -= bytes_to_copy;
+ len -= bytes_to_copy;
+
+ if (!kmapped_page || kpos != (pos & PAGE_MASK)) {
+ struct page *page;
+
+#ifdef CONFIG_STACK_GROWSUP
+ ret = expand_stack_downwards(bprm->vma, pos);
+ if (ret < 0) {
+ /* We've exceed the stack rlimit. */
+ ret = -E2BIG;
+ goto out;
+ }
+#endif
+ ret = get_user_pages(current, bprm->mm, pos,
+ 1, 1, 1, &page, NULL);
+ if (ret <= 0) {
+ /* We've exceed the stack rlimit. */
+ ret = -E2BIG;
goto out;
}
- new = 1;
- }
- if (page != kmapped_page) {
- if (kmapped_page)
+ if (kmapped_page) {
+ flush_kernel_dcache_page(kmapped_page);
kunmap(kmapped_page);
+ put_page(kmapped_page);
+ }
kmapped_page = page;
kaddr = kmap(kmapped_page);
+ kpos = pos & PAGE_MASK;
+ flush_cache_page(bprm->vma, kpos,
+ page_to_pfn(kmapped_page));
}
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0,
- PAGE_SIZE-offset-len);
- }
- err = copy_from_user(kaddr+offset, compat_ptr(str),
- bytes_to_copy);
- if (err) {
+ if (copy_from_user(kaddr+offset, compat_ptr(str),
+ bytes_to_copy)) {
ret = -EFAULT;
goto out;
}
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
}
}
ret = 0;
out:
- if (kmapped_page)
+ if (kmapped_page) {
+ flush_kernel_dcache_page(kmapped_page);
kunmap(kmapped_page);
- return ret;
-}
-
-#ifdef CONFIG_MMU
-
-#define free_arg_pages(bprm) do { } while (0)
-
-#else
-
-static inline void free_arg_pages(struct linux_binprm *bprm)
-{
- int i;
-
- for (i = 0; i < MAX_ARG_PAGES; i++) {
- if (bprm->page[i])
- __free_page(bprm->page[i]);
- bprm->page[i] = NULL;
+ put_page(kmapped_page);
}
+ return ret;
}
-#endif /* CONFIG_MMU */
-
/*
* compat_do_execve() is mostly a copy of do_execve(), with the exception
* that it processes 32 bit argv and envp pointers.
struct linux_binprm *bprm;
struct file *file;
int retval;
- int i;
retval = -ENOMEM;
bprm = kzalloc(sizeof(*bprm), GFP_KERNEL);
sched_exec();
- bprm->p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
bprm->file = file;
bprm->filename = filename;
bprm->interp = filename;
- bprm->mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm->mm)
- goto out_file;
- retval = init_new_context(current, bprm->mm);
- if (retval < 0)
- goto out_mm;
+ retval = bprm_mm_init(bprm);
+ if (retval)
+ goto out_file;
- bprm->argc = compat_count(argv, bprm->p / sizeof(compat_uptr_t));
+ bprm->argc = compat_count(argv, MAX_ARG_STRINGS);
if ((retval = bprm->argc) < 0)
goto out_mm;
- bprm->envc = compat_count(envp, bprm->p / sizeof(compat_uptr_t));
+ bprm->envc = compat_count(envp, MAX_ARG_STRINGS);
if ((retval = bprm->envc) < 0)
goto out_mm;
retval = search_binary_handler(bprm, regs);
if (retval >= 0) {
- free_arg_pages(bprm);
-
/* execve success */
security_bprm_free(bprm);
acct_update_integrals(current);
}
out:
- /* Something went wrong, return the inode and free the argument pages*/
- for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
- struct page * page = bprm->page[i];
- if (page)
- __free_page(page);
- }
-
if (bprm->security)
security_bprm_free(bprm);
out_mm:
if (bprm->mm)
- mmdrop(bprm->mm);
+ mmput(bprm->mm);
out_file:
if (bprm->file) {
compat_ulong_t __user *outp, compat_ulong_t __user *exp, s64 *timeout)
{
fd_set_bits fds;
- char *bits;
+ void *bits;
int size, max_fds, ret = -EINVAL;
struct fdtable *fdt;
+ long stack_fds[SELECT_STACK_ALLOC/sizeof(long)];
if (n < 0)
goto out_nofds;
* since we used fdset we need to allocate memory in units of
* long-words.
*/
- ret = -ENOMEM;
size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
+ bits = stack_fds;
+ if (size > sizeof(stack_fds) / 6) {
+ bits = kmalloc(6 * size, GFP_KERNEL);
+ ret = -ENOMEM;
+ if (!bits)
+ goto out_nofds;
+ }
fds.in = (unsigned long *) bits;
fds.out = (unsigned long *) (bits + size);
fds.ex = (unsigned long *) (bits + 2*size);
compat_set_fd_set(n, exp, fds.res_ex))
ret = -EFAULT;
out:
- kfree(bits);
+ if (bits != stack_fds)
+ kfree(bits);
out_nofds:
return ret;
}
#ifdef CONFIG_EPOLL
-#ifdef CONFIG_HAS_COMPAT_EPOLL_EVENT
-asmlinkage long compat_sys_epoll_ctl(int epfd, int op, int fd,
- struct compat_epoll_event __user *event)
-{
- long err = 0;
- struct compat_epoll_event user;
- struct epoll_event __user *kernel = NULL;
-
- if (event) {
- if (copy_from_user(&user, event, sizeof(user)))
- return -EFAULT;
- kernel = compat_alloc_user_space(sizeof(struct epoll_event));
- err |= __put_user(user.events, &kernel->events);
- err |= __put_user(user.data, &kernel->data);
- }
-
- return err ? err : sys_epoll_ctl(epfd, op, fd, kernel);
-}
-
-
-asmlinkage long compat_sys_epoll_wait(int epfd,
- struct compat_epoll_event __user *events,
- int maxevents, int timeout)
-{
- long i, ret, err = 0;
- struct epoll_event __user *kbuf;
- struct epoll_event ev;
-
- if ((maxevents <= 0) ||
- (maxevents > (INT_MAX / sizeof(struct epoll_event))))
- return -EINVAL;
- kbuf = compat_alloc_user_space(sizeof(struct epoll_event) * maxevents);
- ret = sys_epoll_wait(epfd, kbuf, maxevents, timeout);
- for (i = 0; i < ret; i++) {
- err |= __get_user(ev.events, &kbuf[i].events);
- err |= __get_user(ev.data, &kbuf[i].data);
- err |= __put_user(ev.events, &events->events);
- err |= __put_user_unaligned(ev.data, &events->data);
- events++;
- }
-
- return err ? -EFAULT: ret;
-}
-#endif /* CONFIG_HAS_COMPAT_EPOLL_EVENT */
-
#ifdef TIF_RESTORE_SIGMASK
asmlinkage long compat_sys_epoll_pwait(int epfd,
struct compat_epoll_event __user *events,
sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
}
-#ifdef CONFIG_HAS_COMPAT_EPOLL_EVENT
- err = compat_sys_epoll_wait(epfd, events, maxevents, timeout);
-#else
err = sys_epoll_wait(epfd, events, maxevents, timeout);
-#endif
/*
* If we changed the signal mask, we need to restore the original one.
#endif /* TIF_RESTORE_SIGMASK */
#endif /* CONFIG_EPOLL */
+
+#ifdef CONFIG_SIGNALFD
+
+asmlinkage long compat_sys_signalfd(int ufd,
+ const compat_sigset_t __user *sigmask,
+ compat_size_t sigsetsize)
+{
+ compat_sigset_t ss32;
+ sigset_t tmp;
+ sigset_t __user *ksigmask;
+
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
+ return -EFAULT;
+ sigset_from_compat(&tmp, &ss32);
+ ksigmask = compat_alloc_user_space(sizeof(sigset_t));
+ if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t)))
+ return -EFAULT;
+
+ return sys_signalfd(ufd, ksigmask, sizeof(sigset_t));
+}
+
+#endif /* CONFIG_SIGNALFD */
+
+#ifdef CONFIG_TIMERFD
+
+asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
+ const struct compat_itimerspec __user *utmr,
+ struct compat_itimerspec __user *otmr)
+{
+ int error;
+ struct itimerspec t;
+ struct itimerspec __user *ut;
+
+ if (get_compat_itimerspec(&t, utmr))
+ return -EFAULT;
+ ut = compat_alloc_user_space(2 * sizeof(struct itimerspec));
+ if (copy_to_user(&ut[0], &t, sizeof(t)))
+ return -EFAULT;
+ error = sys_timerfd_settime(ufd, flags, &ut[0], &ut[1]);
+ if (!error && otmr)
+ error = (copy_from_user(&t, &ut[1], sizeof(struct itimerspec)) ||
+ put_compat_itimerspec(otmr, &t)) ? -EFAULT: 0;
+
+ return error;
+}
+
+asmlinkage long compat_sys_timerfd_gettime(int ufd,
+ struct compat_itimerspec __user *otmr)
+{
+ int error;
+ struct itimerspec t;
+ struct itimerspec __user *ut;
+
+ ut = compat_alloc_user_space(sizeof(struct itimerspec));
+ error = sys_timerfd_gettime(ufd, ut);
+ if (!error)
+ error = (copy_from_user(&t, ut, sizeof(struct itimerspec)) ||
+ put_compat_itimerspec(otmr, &t)) ? -EFAULT: 0;
+
+ return error;
+}
+
+#endif /* CONFIG_TIMERFD */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff