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Diffstat (limited to 'fs/ksmbd/vfs.c')
-rw-r--r--fs/ksmbd/vfs.c79
1 files changed, 48 insertions, 31 deletions
diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index 19d36393974c..8de970d6146f 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -11,7 +11,6 @@
#include <linux/writeback.h>
#include <linux/xattr.h>
#include <linux/falloc.h>
-#include <linux/genhd.h>
#include <linux/fsnotify.h>
#include <linux/dcache.h>
#include <linux/slab.h>
@@ -378,8 +377,7 @@ int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count,
if (work->conn->connection_type) {
if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
- pr_err("no right to read(%pd)\n",
- fp->filp->f_path.dentry);
+ pr_err("no right to read(%pD)\n", fp->filp);
return -EACCES;
}
}
@@ -399,8 +397,7 @@ int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count,
nbytes = kernel_read(filp, rbuf, count, pos);
if (nbytes < 0) {
- pr_err("smb read failed for (%s), err = %zd\n",
- fp->filename, nbytes);
+ pr_err("smb read failed, err = %zd\n", nbytes);
return nbytes;
}
@@ -483,15 +480,13 @@ int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp,
char *buf, size_t count, loff_t *pos, bool sync,
ssize_t *written)
{
- struct ksmbd_session *sess = work->sess;
struct file *filp;
loff_t offset = *pos;
int err = 0;
- if (sess->conn->connection_type) {
+ if (work->conn->connection_type) {
if (!(fp->daccess & FILE_WRITE_DATA_LE)) {
- pr_err("no right to write(%pd)\n",
- fp->filp->f_path.dentry);
+ pr_err("no right to write(%pD)\n", fp->filp);
err = -EACCES;
goto out;
}
@@ -530,8 +525,8 @@ int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp,
if (sync) {
err = vfs_fsync_range(filp, offset, offset + *written, 0);
if (err < 0)
- pr_err("fsync failed for filename = %pd, err = %d\n",
- fp->filp->f_path.dentry, err);
+ pr_err("fsync failed for filename = %pD, err = %d\n",
+ fp->filp, err);
}
out:
@@ -546,7 +541,7 @@ out:
*
* Return: 0 on success, otherwise error
*/
-int ksmbd_vfs_getattr(struct path *path, struct kstat *stat)
+int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat)
{
int err;
@@ -876,8 +871,7 @@ int ksmbd_vfs_truncate(struct ksmbd_work *work,
err = vfs_truncate(&filp->f_path, size);
if (err)
- pr_err("truncate failed for filename : %s err %d\n",
- fp->filename, err);
+ pr_err("truncate failed, err %d\n", err);
return err;
}
@@ -966,7 +960,7 @@ ssize_t ksmbd_vfs_getxattr(struct user_namespace *user_ns,
*/
int ksmbd_vfs_setxattr(struct user_namespace *user_ns,
struct dentry *dentry, const char *attr_name,
- const void *attr_value, size_t attr_size, int flags)
+ void *attr_value, size_t attr_size, int flags)
{
int err;
@@ -1018,7 +1012,9 @@ int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp,
FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
off, len);
- return vfs_fallocate(fp->filp, FALLOC_FL_ZERO_RANGE, off, len);
+ return vfs_fallocate(fp->filp,
+ FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE,
+ off, len);
}
int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,
@@ -1049,7 +1045,7 @@ int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,
*out_count = 0;
end = start + length;
while (start < end && *out_count < in_count) {
- extent_start = f->f_op->llseek(f, start, SEEK_DATA);
+ extent_start = vfs_llseek(f, start, SEEK_DATA);
if (extent_start < 0) {
if (extent_start != -ENXIO)
ret = (int)extent_start;
@@ -1059,7 +1055,7 @@ int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,
if (extent_start >= end)
break;
- extent_end = f->f_op->llseek(f, extent_start, SEEK_HOLE);
+ extent_end = vfs_llseek(f, extent_start, SEEK_HOLE);
if (extent_end < 0) {
if (extent_end != -ENXIO)
ret = (int)extent_end;
@@ -1107,7 +1103,7 @@ int ksmbd_vfs_unlink(struct user_namespace *user_ns,
return err;
}
-static int __dir_empty(struct dir_context *ctx, const char *name, int namlen,
+static bool __dir_empty(struct dir_context *ctx, const char *name, int namlen,
loff_t offset, u64 ino, unsigned int d_type)
{
struct ksmbd_readdir_data *buf;
@@ -1115,9 +1111,7 @@ static int __dir_empty(struct dir_context *ctx, const char *name, int namlen,
buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
buf->dirent_count++;
- if (buf->dirent_count > 2)
- return -ENOTEMPTY;
- return 0;
+ return buf->dirent_count <= 2;
}
/**
@@ -1144,22 +1138,33 @@ int ksmbd_vfs_empty_dir(struct ksmbd_file *fp)
return err;
}
-static int __caseless_lookup(struct dir_context *ctx, const char *name,
+static bool __caseless_lookup(struct dir_context *ctx, const char *name,
int namlen, loff_t offset, u64 ino,
unsigned int d_type)
{
struct ksmbd_readdir_data *buf;
+ int cmp = -EINVAL;
buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
if (buf->used != namlen)
- return 0;
- if (!strncasecmp((char *)buf->private, name, namlen)) {
+ return true;
+ if (IS_ENABLED(CONFIG_UNICODE) && buf->um) {
+ const struct qstr q_buf = {.name = buf->private,
+ .len = buf->used};
+ const struct qstr q_name = {.name = name,
+ .len = namlen};
+
+ cmp = utf8_strncasecmp(buf->um, &q_buf, &q_name);
+ }
+ if (cmp < 0)
+ cmp = strncasecmp((char *)buf->private, name, namlen);
+ if (!cmp) {
memcpy((char *)buf->private, name, namlen);
buf->dirent_count = 1;
- return -EEXIST;
+ return false;
}
- return 0;
+ return true;
}
/**
@@ -1170,7 +1175,8 @@ static int __caseless_lookup(struct dir_context *ctx, const char *name,
*
* Return: 0 on success, otherwise error
*/
-static int ksmbd_vfs_lookup_in_dir(struct path *dir, char *name, size_t namelen)
+static int ksmbd_vfs_lookup_in_dir(const struct path *dir, char *name,
+ size_t namelen, struct unicode_map *um)
{
int ret;
struct file *dfilp;
@@ -1180,6 +1186,7 @@ static int ksmbd_vfs_lookup_in_dir(struct path *dir, char *name, size_t namelen)
.private = name,
.used = namelen,
.dirent_count = 0,
+ .um = um,
};
dfilp = dentry_open(dir, flags, current_cred());
@@ -1242,7 +1249,8 @@ int ksmbd_vfs_kern_path(struct ksmbd_work *work, char *name,
break;
err = ksmbd_vfs_lookup_in_dir(&parent, filename,
- filename_len);
+ filename_len,
+ work->conn->um);
path_put(&parent);
if (err)
goto out;
@@ -1541,6 +1549,11 @@ int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn,
}
*pntsd = acl.sd_buf;
+ if (acl.sd_size < sizeof(struct smb_ntsd)) {
+ pr_err("sd size is invalid\n");
+ goto out_free;
+ }
+
(*pntsd)->osidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->osidoffset) -
NDR_NTSD_OFFSETOF);
(*pntsd)->gsidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->gsidoffset) -
@@ -1740,11 +1753,11 @@ int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work,
*total_size_written = 0;
if (!(src_fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
- pr_err("no right to read(%pd)\n", src_fp->filp->f_path.dentry);
+ pr_err("no right to read(%pD)\n", src_fp->filp);
return -EACCES;
}
if (!(dst_fp->daccess & (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE))) {
- pr_err("no right to write(%pd)\n", dst_fp->filp->f_path.dentry);
+ pr_err("no right to write(%pD)\n", dst_fp->filp);
return -EACCES;
}
@@ -1780,6 +1793,10 @@ int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work,
ret = vfs_copy_file_range(src_fp->filp, src_off,
dst_fp->filp, dst_off, len, 0);
+ if (ret == -EOPNOTSUPP || ret == -EXDEV)
+ ret = generic_copy_file_range(src_fp->filp, src_off,
+ dst_fp->filp, dst_off,
+ len, 0);
if (ret < 0)
return ret;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.