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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /fs/aufs/ioctl.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'fs/aufs/ioctl.c')
-rw-r--r--fs/aufs/ioctl.c206
1 files changed, 0 insertions, 206 deletions
diff --git a/fs/aufs/ioctl.c b/fs/aufs/ioctl.c
deleted file mode 100644
index 6528fb911..000000000
--- a/fs/aufs/ioctl.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (C) 2005-2016 Junjiro R. Okajima
- */
-
-/*
- * ioctl
- * plink-management and readdir in userspace.
- * assist the pathconf(3) wrapper library.
- * move-down
- * File-based Hierarchical Storage Management.
- */
-
-#include <linux/compat.h>
-#include <linux/file.h>
-#include "aufs.h"
-
-static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg)
-{
- int err, fd;
- aufs_bindex_t wbi, bindex, bend;
- struct file *h_file;
- struct super_block *sb;
- struct dentry *root;
- struct au_branch *br;
- struct aufs_wbr_fd wbrfd = {
- .oflags = au_dir_roflags,
- .brid = -1
- };
- const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY
- | O_NOATIME | O_CLOEXEC;
-
- AuDebugOn(wbrfd.oflags & ~valid);
-
- if (arg) {
- err = copy_from_user(&wbrfd, arg, sizeof(wbrfd));
- if (unlikely(err)) {
- err = -EFAULT;
- goto out;
- }
-
- err = -EINVAL;
- AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid);
- wbrfd.oflags |= au_dir_roflags;
- AuDbg("0%o\n", wbrfd.oflags);
- if (unlikely(wbrfd.oflags & ~valid))
- goto out;
- }
-
- fd = get_unused_fd_flags(0);
- err = fd;
- if (unlikely(fd < 0))
- goto out;
-
- h_file = ERR_PTR(-EINVAL);
- wbi = 0;
- br = NULL;
- sb = path->dentry->d_sb;
- root = sb->s_root;
- aufs_read_lock(root, AuLock_IR);
- bend = au_sbend(sb);
- if (wbrfd.brid >= 0) {
- wbi = au_br_index(sb, wbrfd.brid);
- if (unlikely(wbi < 0 || wbi > bend))
- goto out_unlock;
- }
-
- h_file = ERR_PTR(-ENOENT);
- br = au_sbr(sb, wbi);
- if (!au_br_writable(br->br_perm)) {
- if (arg)
- goto out_unlock;
-
- bindex = wbi + 1;
- wbi = -1;
- for (; bindex <= bend; bindex++) {
- br = au_sbr(sb, bindex);
- if (au_br_writable(br->br_perm)) {
- wbi = bindex;
- br = au_sbr(sb, wbi);
- break;
- }
- }
- }
- AuDbg("wbi %d\n", wbi);
- if (wbi >= 0)
- h_file = au_h_open(root, wbi, wbrfd.oflags, NULL,
- /*force_wr*/0);
-
-out_unlock:
- aufs_read_unlock(root, AuLock_IR);
- err = PTR_ERR(h_file);
- if (IS_ERR(h_file))
- goto out_fd;
-
- atomic_dec(&br->br_count); /* cf. au_h_open() */
- fd_install(fd, h_file);
- err = fd;
- goto out; /* success */
-
-out_fd:
- put_unused_fd(fd);
-out:
- AuTraceErr(err);
- return err;
-}
-
-/* ---------------------------------------------------------------------- */
-
-long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg)
-{
- long err;
- struct dentry *dentry;
-
- switch (cmd) {
- case AUFS_CTL_RDU:
- case AUFS_CTL_RDU_INO:
- err = au_rdu_ioctl(file, cmd, arg);
- break;
-
- case AUFS_CTL_WBR_FD:
- err = au_wbr_fd(&file->f_path, (void __user *)arg);
- break;
-
- case AUFS_CTL_IBUSY:
- err = au_ibusy_ioctl(file, arg);
- break;
-
- case AUFS_CTL_BRINFO:
- err = au_brinfo_ioctl(file, arg);
- break;
-
- case AUFS_CTL_FHSM_FD:
- dentry = file->f_path.dentry;
- if (IS_ROOT(dentry))
- err = au_fhsm_fd(dentry->d_sb, arg);
- else
- err = -ENOTTY;
- break;
-
- default:
- /* do not call the lower */
- AuDbg("0x%x\n", cmd);
- err = -ENOTTY;
- }
-
- AuTraceErr(err);
- return err;
-}
-
-long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg)
-{
- long err;
-
- switch (cmd) {
- case AUFS_CTL_MVDOWN:
- err = au_mvdown(file->f_path.dentry, (void __user *)arg);
- break;
-
- case AUFS_CTL_WBR_FD:
- err = au_wbr_fd(&file->f_path, (void __user *)arg);
- break;
-
- default:
- /* do not call the lower */
- AuDbg("0x%x\n", cmd);
- err = -ENOTTY;
- }
-
- AuTraceErr(err);
- return err;
-}
-
-#ifdef CONFIG_COMPAT
-long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- long err;
-
- switch (cmd) {
- case AUFS_CTL_RDU:
- case AUFS_CTL_RDU_INO:
- err = au_rdu_compat_ioctl(file, cmd, arg);
- break;
-
- case AUFS_CTL_IBUSY:
- err = au_ibusy_compat_ioctl(file, arg);
- break;
-
- case AUFS_CTL_BRINFO:
- err = au_brinfo_compat_ioctl(file, arg);
- break;
-
- default:
- err = aufs_ioctl_dir(file, cmd, arg);
- }
-
- AuTraceErr(err);
- return err;
-}
-
-long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg));
-}
-#endif