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authorDavid S. Miller <davem@davemloft.net>2017-04-26 22:39:08 -0400
committerDavid S. Miller <davem@davemloft.net>2017-04-26 22:39:08 -0400
commitb1513c35317c106a1588f3ab32f6888f0e2afd71 (patch)
treeb2cd68a0d34dd04eb89fcf28e173e5ee22f898fd /fs
parent78a57b482aa53b040fbc2b2ef0208b54f004161b (diff)
parentf83246089ca09308425175d47f5e71e6da68b2ef (diff)
downloadlinux-b1513c35317c106a1588f3ab32f6888f0e2afd71.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs')
-rw-r--r--fs/stat.c13
-rw-r--r--fs/ubifs/debug.c10
-rw-r--r--fs/ubifs/dir.c18
3 files changed, 25 insertions, 16 deletions
diff --git a/fs/stat.c b/fs/stat.c
index c6c963b2546b..3d85747bd86e 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -547,13 +547,13 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer)
/**
* sys_statx - System call to get enhanced stats
* @dfd: Base directory to pathwalk from *or* fd to stat.
- * @filename: File to stat *or* NULL.
+ * @filename: File to stat or "" with AT_EMPTY_PATH
* @flags: AT_* flags to control pathwalk.
* @mask: Parts of statx struct actually required.
* @buffer: Result buffer.
*
- * Note that if filename is NULL, then it does the equivalent of fstat() using
- * dfd to indicate the file of interest.
+ * Note that fstat() can be emulated by setting dfd to the fd of interest,
+ * supplying "" as the filename and setting AT_EMPTY_PATH in the flags.
*/
SYSCALL_DEFINE5(statx,
int, dfd, const char __user *, filename, unsigned, flags,
@@ -567,11 +567,10 @@ SYSCALL_DEFINE5(statx,
return -EINVAL;
if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_SYNC_TYPE)
return -EINVAL;
+ if (!filename)
+ return -EINVAL;
- if (filename)
- error = vfs_statx(dfd, filename, flags, &stat, mask);
- else
- error = vfs_statx_fd(dfd, &stat, mask, flags);
+ error = vfs_statx(dfd, filename, flags, &stat, mask);
if (error)
return error;
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 1e712a364680..718b749fa11a 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -32,6 +32,7 @@
#include <linux/math64.h>
#include <linux/uaccess.h>
#include <linux/random.h>
+#include <linux/ctype.h>
#include "ubifs.h"
static DEFINE_SPINLOCK(dbg_lock);
@@ -286,8 +287,10 @@ void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode)
break;
}
- pr_err("\t%d: %s (%s)\n",
- count++, dent->name, get_dent_type(dent->type));
+ pr_err("\t%d: inode %llu, type %s, len %d\n",
+ count++, (unsigned long long) le64_to_cpu(dent->inum),
+ get_dent_type(dent->type),
+ le16_to_cpu(dent->nlen));
fname_name(&nm) = dent->name;
fname_len(&nm) = le16_to_cpu(dent->nlen);
@@ -464,7 +467,8 @@ void ubifs_dump_node(const struct ubifs_info *c, const void *node)
pr_err("(bad name length, not printing, bad or corrupted node)");
else {
for (i = 0; i < nlen && dent->name[i]; i++)
- pr_cont("%c", dent->name[i]);
+ pr_cont("%c", isprint(dent->name[i]) ?
+ dent->name[i] : '?');
}
pr_cont("\n");
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 30825d882aa9..b777bddaa1dd 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -606,8 +606,8 @@ static int ubifs_readdir(struct file *file, struct dir_context *ctx)
}
while (1) {
- dbg_gen("feed '%s', ino %llu, new f_pos %#x",
- dent->name, (unsigned long long)le64_to_cpu(dent->inum),
+ dbg_gen("ino %llu, new f_pos %#x",
+ (unsigned long long)le64_to_cpu(dent->inum),
key_hash_flash(c, &dent->key));
ubifs_assert(le64_to_cpu(dent->ch.sqnum) >
ubifs_inode(dir)->creat_sqnum);
@@ -748,6 +748,11 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
goto out_fname;
lock_2_inodes(dir, inode);
+
+ /* Handle O_TMPFILE corner case, it is allowed to link a O_TMPFILE. */
+ if (inode->i_nlink == 0)
+ ubifs_delete_orphan(c, inode->i_ino);
+
inc_nlink(inode);
ihold(inode);
inode->i_ctime = ubifs_current_time(inode);
@@ -768,6 +773,8 @@ out_cancel:
dir->i_size -= sz_change;
dir_ui->ui_size = dir->i_size;
drop_nlink(inode);
+ if (inode->i_nlink == 0)
+ ubifs_add_orphan(c, inode->i_ino);
unlock_2_inodes(dir, inode);
ubifs_release_budget(c, &req);
iput(inode);
@@ -1068,8 +1075,10 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
}
err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
- if (err)
+ if (err) {
+ kfree(dev);
goto out_budg;
+ }
sz_change = CALC_DENT_SIZE(fname_len(&nm));
@@ -1316,9 +1325,6 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
unsigned int uninitialized_var(saved_nlink);
struct fscrypt_name old_nm, new_nm;
- if (flags & ~RENAME_NOREPLACE)
- return -EINVAL;
-
/*
* Budget request settings: deletion direntry, new direntry, removing
* the old inode, and changing old and new parent directory inodes.