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Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull compat and uaccess updates from Al Viro:

 - {get,put}_compat_sigset() series

 - assorted compat ioctl stuff

 - more set_fs() elimination

 - a few more timespec64 conversions

 - several removals of pointless access_ok() in places where it was
   followed only by non-__ variants of primitives

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
  coredump: call do_unlinkat directly instead of sys_unlink
  fs: expose do_unlinkat for built-in callers
  ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs()
  ipmi: get rid of pointless access_ok()
  pi433: sanitize ioctl
  cxlflash: get rid of pointless access_ok()
  mtdchar: get rid of pointless access_ok()
  r128: switch compat ioctls to drm_ioctl_kernel()
  selection: get rid of field-by-field copyin
  VT_RESIZEX: get rid of field-by-field copyin
  i2c compat ioctls: move to ->compat_ioctl()
  sched_rr_get_interval(): move compat to native, get rid of set_fs()
  mips: switch to {get,put}_compat_sigset()
  sparc: switch to {get,put}_compat_sigset()
  s390: switch to {get,put}_compat_sigset()
  ppc: switch to {get,put}_compat_sigset()
  parisc: switch to {get,put}_compat_sigset()
  get_compat_sigset()
  get rid of {get,put}_compat_itimerspec()
  io_getevents: Use timespec64 to represent timeouts
  ...
This commit is contained in:
Linus Torvalds 2017-11-17 11:54:55 -08:00
commit 93f30c73ec
32 changed files with 508 additions and 821 deletions
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12
fs/namei.c
View file

@ -4010,10 +4010,9 @@ EXPORT_SYMBOL(vfs_unlink);
* writeout happening, and we don't want to prevent access to the directory
* while waiting on the I/O.
*/
static long do_unlinkat(int dfd, const char __user *pathname)
long do_unlinkat(int dfd, struct filename *name)
{
int error;
struct filename *name;
struct dentry *dentry;
struct path path;
struct qstr last;
@ -4022,8 +4021,7 @@ static long do_unlinkat(int dfd, const char __user *pathname)
struct inode *delegated_inode = NULL;
unsigned int lookup_flags = 0;
retry:
name = filename_parentat(dfd, getname(pathname), lookup_flags,
&path, &last, &type);
name = filename_parentat(dfd, name, lookup_flags, &path, &last, &type);
if (IS_ERR(name))
return PTR_ERR(name);
@ -4065,12 +4063,12 @@ exit2:
mnt_drop_write(path.mnt);
exit1:
path_put(&path);
putname(name);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
inode = NULL;
goto retry;
}
putname(name);
return error;
slashes:
@ -4091,12 +4089,12 @@ SYSCALL_DEFINE3(unlinkat, int, dfd, const char __user *, pathname, int, flag)
if (flag & AT_REMOVEDIR)
return do_rmdir(dfd, pathname);
return do_unlinkat(dfd, pathname);
return do_unlinkat(dfd, getname(pathname));
}
SYSCALL_DEFINE1(unlink, const char __user *, pathname)
{
return do_unlinkat(AT_FDCWD, pathname);
return do_unlinkat(AT_FDCWD, getname(pathname));
}
int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)