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-rw-r--r--fs/cifs/cifs_fs_sb.h8
-rw-r--r--fs/cifs/cifs_spnego.c6
-rw-r--r--fs/cifs/cifsacl.c47
-rw-r--r--fs/cifs/cifsfs.c25
-rw-r--r--fs/cifs/cifsglob.h22
-rw-r--r--fs/cifs/cifspdu.h1
-rw-r--r--fs/cifs/cifsproto.h9
-rw-r--r--fs/cifs/cifssmb.c15
-rw-r--r--fs/cifs/connect.c68
-rw-r--r--fs/cifs/dir.c18
-rw-r--r--fs/cifs/file.c46
-rw-r--r--fs/cifs/inode.c61
-rw-r--r--fs/cifs/ioctl.c2
-rw-r--r--fs/cifs/misc.c2
-rw-r--r--fs/cifs/readdir.c12
15 files changed, 212 insertions, 130 deletions
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index c865bfdfe819..37e4a72a7d1c 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -55,10 +55,10 @@ struct cifs_sb_info {
unsigned int wsize;
unsigned long actimeo; /* attribute cache timeout (jiffies) */
atomic_t active;
- uid_t mnt_uid;
- gid_t mnt_gid;
- uid_t mnt_backupuid;
- gid_t mnt_backupgid;
+ kuid_t mnt_uid;
+ kgid_t mnt_gid;
+ kuid_t mnt_backupuid;
+ kgid_t mnt_backupgid;
umode_t mnt_file_mode;
umode_t mnt_dir_mode;
unsigned int mnt_cifs_flags;
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 086f381d6489..10e774761299 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -149,10 +149,12 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
goto out;
dp = description + strlen(description);
- sprintf(dp, ";uid=0x%x", sesInfo->linux_uid);
+ sprintf(dp, ";uid=0x%x",
+ from_kuid_munged(&init_user_ns, sesInfo->linux_uid));
dp = description + strlen(description);
- sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid);
+ sprintf(dp, ";creduid=0x%x",
+ from_kuid_munged(&init_user_ns, sesInfo->cred_uid));
if (sesInfo->user_name) {
dp = description + strlen(description);
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 5cbd00e74067..f1e3f25fe004 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -266,8 +266,8 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
struct key *sidkey;
char *sidstr;
const struct cred *saved_cred;
- uid_t fuid = cifs_sb->mnt_uid;
- gid_t fgid = cifs_sb->mnt_gid;
+ kuid_t fuid = cifs_sb->mnt_uid;
+ kgid_t fgid = cifs_sb->mnt_gid;
/*
* If we have too many subauthorities, then something is really wrong.
@@ -297,6 +297,7 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
* probably a safe assumption but might be better to check based on
* sidtype.
*/
+ BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
if (sidkey->datalen != sizeof(uid_t)) {
rc = -EIO;
cFYI(1, "%s: Downcall contained malformed key "
@@ -305,10 +306,21 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
goto out_key_put;
}
- if (sidtype == SIDOWNER)
- memcpy(&fuid, &sidkey->payload.value, sizeof(uid_t));
- else
- memcpy(&fgid, &sidkey->payload.value, sizeof(gid_t));
+ if (sidtype == SIDOWNER) {
+ kuid_t uid;
+ uid_t id;
+ memcpy(&id, &sidkey->payload.value, sizeof(uid_t));
+ uid = make_kuid(&init_user_ns, id);
+ if (uid_valid(uid))
+ fuid = uid;
+ } else {
+ kgid_t gid;
+ gid_t id;
+ memcpy(&id, &sidkey->payload.value, sizeof(gid_t));
+ gid = make_kgid(&init_user_ns, id);
+ if (gid_valid(gid))
+ fgid = gid;
+ }
out_key_put:
key_put(sidkey);
@@ -346,7 +358,8 @@ init_cifs_idmap(void)
if (!cred)
return -ENOMEM;
- keyring = keyring_alloc(".cifs_idmap", 0, 0, cred,
+ keyring = keyring_alloc(".cifs_idmap",
+ GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
(KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ,
KEY_ALLOC_NOT_IN_QUOTA, NULL);
@@ -774,7 +787,7 @@ static int parse_sec_desc(struct cifs_sb_info *cifs_sb,
/* Convert permission bits from mode to equivalent CIFS ACL */
static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
- __u32 secdesclen, __u64 nmode, uid_t uid, gid_t gid, int *aclflag)
+ __u32 secdesclen, __u64 nmode, kuid_t uid, kgid_t gid, int *aclflag)
{
int rc = 0;
__u32 dacloffset;
@@ -806,17 +819,19 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
*aclflag = CIFS_ACL_DACL;
} else {
memcpy(pnntsd, pntsd, secdesclen);
- if (uid != NO_CHANGE_32) { /* chown */
+ if (uid_valid(uid)) { /* chown */
+ uid_t id;
owner_sid_ptr = (struct cifs_sid *)((char *)pnntsd +
le32_to_cpu(pnntsd->osidoffset));
nowner_sid_ptr = kmalloc(sizeof(struct cifs_sid),
GFP_KERNEL);
if (!nowner_sid_ptr)
return -ENOMEM;
- rc = id_to_sid(uid, SIDOWNER, nowner_sid_ptr);
+ id = from_kuid(&init_user_ns, uid);
+ rc = id_to_sid(id, SIDOWNER, nowner_sid_ptr);
if (rc) {
cFYI(1, "%s: Mapping error %d for owner id %d",
- __func__, rc, uid);
+ __func__, rc, id);
kfree(nowner_sid_ptr);
return rc;
}
@@ -824,17 +839,19 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
kfree(nowner_sid_ptr);
*aclflag = CIFS_ACL_OWNER;
}
- if (gid != NO_CHANGE_32) { /* chgrp */
+ if (gid_valid(gid)) { /* chgrp */
+ gid_t id;
group_sid_ptr = (struct cifs_sid *)((char *)pnntsd +
le32_to_cpu(pnntsd->gsidoffset));
ngroup_sid_ptr = kmalloc(sizeof(struct cifs_sid),
GFP_KERNEL);
if (!ngroup_sid_ptr)
return -ENOMEM;
- rc = id_to_sid(gid, SIDGROUP, ngroup_sid_ptr);
+ id = from_kgid(&init_user_ns, gid);
+ rc = id_to_sid(id, SIDGROUP, ngroup_sid_ptr);
if (rc) {
cFYI(1, "%s: Mapping error %d for group id %d",
- __func__, rc, gid);
+ __func__, rc, id);
kfree(ngroup_sid_ptr);
return rc;
}
@@ -1002,7 +1019,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
/* Convert mode bits to an ACL so we can update the ACL on the server */
int
id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
- uid_t uid, gid_t gid)
+ kuid_t uid, kgid_t gid)
{
int rc = 0;
int aclflag = CIFS_ACL_DACL; /* default flag to set */
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index de7f9168a118..1a052c0eee8e 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -375,13 +375,15 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
(int)(srcaddr->sa_family));
}
- seq_printf(s, ",uid=%u", cifs_sb->mnt_uid);
+ seq_printf(s, ",uid=%u",
+ from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
seq_printf(s, ",forceuid");
else
seq_printf(s, ",noforceuid");
- seq_printf(s, ",gid=%u", cifs_sb->mnt_gid);
+ seq_printf(s, ",gid=%u",
+ from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
seq_printf(s, ",forcegid");
else
@@ -436,9 +438,13 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
seq_printf(s, ",noperm");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
- seq_printf(s, ",backupuid=%u", cifs_sb->mnt_backupuid);
+ seq_printf(s, ",backupuid=%u",
+ from_kuid_munged(&init_user_ns,
+ cifs_sb->mnt_backupuid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID)
- seq_printf(s, ",backupgid=%u", cifs_sb->mnt_backupgid);
+ seq_printf(s, ",backupgid=%u",
+ from_kgid_munged(&init_user_ns,
+ cifs_sb->mnt_backupgid));
seq_printf(s, ",rsize=%u", cifs_sb->rsize);
seq_printf(s, ",wsize=%u", cifs_sb->wsize);
@@ -558,6 +564,11 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
dentry = ERR_PTR(-ENOENT);
break;
}
+ if (!S_ISDIR(dir->i_mode)) {
+ dput(dentry);
+ dentry = ERR_PTR(-ENOTDIR);
+ break;
+ }
/* skip separators */
while (*s == sep)
@@ -677,7 +688,7 @@ out_nls:
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
- struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(iocb->ki_filp);
ssize_t written;
int rc;
@@ -701,7 +712,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
*/
if (whence != SEEK_SET && whence != SEEK_CUR) {
int rc;
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
/*
* We need to be sure that all dirty pages are written and the
@@ -733,7 +744,7 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
{
/* note that this is called by vfs setlease with lock_flocks held
to protect *lease from going away */
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
struct cifsFileInfo *cfile = file->private_data;
if (!(S_ISREG(inode->i_mode)))
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index e6899cea1c35..4f07f6fbe494 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -400,11 +400,11 @@ struct smb_vol {
char *iocharset; /* local code page for mapping to and from Unicode */
char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
- uid_t cred_uid;
- uid_t linux_uid;
- gid_t linux_gid;
- uid_t backupuid;
- gid_t backupgid;
+ kuid_t cred_uid;
+ kuid_t linux_uid;
+ kgid_t linux_gid;
+ kuid_t backupuid;
+ kgid_t backupgid;
umode_t file_mode;
umode_t dir_mode;
unsigned secFlg;
@@ -703,8 +703,8 @@ struct cifs_ses {
char *serverNOS; /* name of network operating system of server */
char *serverDomain; /* security realm of server */
__u64 Suid; /* remote smb uid */
- uid_t linux_uid; /* overriding owner of files on the mount */
- uid_t cred_uid; /* owner of credentials */
+ kuid_t linux_uid; /* overriding owner of files on the mount */
+ kuid_t cred_uid; /* owner of credentials */
unsigned int capabilities;
char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
@@ -838,7 +838,7 @@ struct cifs_tcon {
*/
struct tcon_link {
struct rb_node tl_rbnode;
- uid_t tl_uid;
+ kuid_t tl_uid;
unsigned long tl_flags;
#define TCON_LINK_MASTER 0
#define TCON_LINK_PENDING 1
@@ -931,7 +931,7 @@ struct cifsFileInfo {
struct list_head tlist; /* pointer to next fid owned by tcon */
struct list_head flist; /* next fid (file instance) for this inode */
struct cifs_fid_locks *llist; /* brlocks held by this fid */
- unsigned int uid; /* allows finding which FileInfo structure */
+ kuid_t uid; /* allows finding which FileInfo structure */
__u32 pid; /* process id who opened file */
struct cifs_fid fid; /* file id from remote */
/* BB add lock scope info here if needed */ ;
@@ -1245,8 +1245,8 @@ struct cifs_fattr {
u64 cf_eof;
u64 cf_bytes;
u64 cf_createtime;
- uid_t cf_uid;
- gid_t cf_gid;
+ kuid_t cf_uid;
+ kgid_t cf_gid;
umode_t cf_mode;
dev_t cf_rdev;
unsigned int cf_nlink;
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index b9d59a948a2c..e996ff6b26d1 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -277,7 +277,6 @@
#define CIFS_NO_HANDLE 0xFFFF
#define NO_CHANGE_64 0xFFFFFFFFFFFFFFFFULL
-#define NO_CHANGE_32 0xFFFFFFFFUL
/* IPC$ in ASCII */
#define CIFS_IPC_RESOURCE "\x49\x50\x43\x24"
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1988c1baa224..f450f0683ddd 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -46,7 +46,8 @@ extern void _free_xid(unsigned int);
({ \
unsigned int __xid = _get_xid(); \
cFYI(1, "CIFS VFS: in %s as Xid: %u with uid: %d", \
- __func__, __xid, current_fsuid()); \
+ __func__, __xid, \
+ from_kuid(&init_user_ns, current_fsuid())); \
__xid; \
})
@@ -161,7 +162,7 @@ extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr, struct inode *inode,
const char *path, const __u16 *pfid);
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
- uid_t, gid_t);
+ kuid_t, kgid_t);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
@@ -304,8 +305,8 @@ struct cifs_unix_set_info_args {
__u64 atime;
__u64 mtime;
__u64 mode;
- __u64 uid;
- __u64 gid;
+ kuid_t uid;
+ kgid_t gid;
dev_t device;
};
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 76d0d2998850..7353bc5d73d7 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1909,8 +1909,11 @@ cifs_writev_requeue(struct cifs_writedata *wdata)
} while (rc == -EAGAIN);
for (i = 0; i < wdata->nr_pages; i++) {
- if (rc != 0)
+ if (rc != 0) {
SetPageError(wdata->pages[i]);
+ end_page_writeback(wdata->pages[i]);
+ page_cache_release(wdata->pages[i]);
+ }
unlock_page(wdata->pages[i]);
}
@@ -5819,8 +5822,14 @@ static void
cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
const struct cifs_unix_set_info_args *args)
{
+ u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64;
u64 mode = args->mode;
+ if (uid_valid(args->uid))
+ uid = from_kuid(&init_user_ns, args->uid);
+ if (gid_valid(args->gid))
+ gid = from_kgid(&init_user_ns, args->gid);
+
/*
* Samba server ignores set of file size to zero due to bugs in some
* older clients, but we should be precise - we use SetFileSize to
@@ -5833,8 +5842,8 @@ cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
data_offset->LastStatusChange = cpu_to_le64(args->ctime);
data_offset->LastAccessTime = cpu_to_le64(args->atime);
data_offset->LastModificationTime = cpu_to_le64(args->mtime);
- data_offset->Uid = cpu_to_le64(args->uid);
- data_offset->Gid = cpu_to_le64(args->gid);
+ data_offset->Uid = cpu_to_le64(uid);
+ data_offset->Gid = cpu_to_le64(gid);
/* better to leave device as zero when it is */
data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
data_offset->DevMinor = cpu_to_le64(MINOR(args->device));
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 12b3da39733b..54125e04fd0c 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -987,6 +987,41 @@ static int get_option_ul(substring_t args[], unsigned long *option)
return rc;
}
+static int get_option_uid(substring_t args[], kuid_t *result)
+{
+ unsigned long value;
+ kuid_t uid;
+ int rc;
+
+ rc = get_option_ul(args, &value);
+ if (rc)
+ return rc;
+
+ uid = make_kuid(current_user_ns(), value);
+ if (!uid_valid(uid))
+ return -EINVAL;
+
+ *result = uid;
+ return 0;
+}
+
+static int get_option_gid(substring_t args[], kgid_t *result)
+{
+ unsigned long value;
+ kgid_t gid;
+ int rc;
+
+ rc = get_option_ul(args, &value);
+ if (rc)
+ return rc;
+
+ gid = make_kgid(current_user_ns(), value);
+ if (!gid_valid(gid))
+ return -EINVAL;
+
+ *result = gid;
+ return 0;
+}
static int cifs_parse_security_flavors(char *value,
struct smb_vol *vol)
@@ -996,7 +1031,7 @@ static int cifs_parse_security_flavors(char *value,
switch (match_token(value, cifs_secflavor_tokens, args)) {
case Opt_sec_krb5:
- vol->secFlg |= CIFSSEC_MAY_KRB5;
+ vol->secFlg |= CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_SIGN;
break;
case Opt_sec_krb5i:
vol->secFlg |= CIFSSEC_MAY_KRB5 | CIFSSEC_MUST_SIGN;
@@ -1424,47 +1459,42 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
/* Numeric Values */
case Opt_backupuid:
- if (get_option_ul(args, &option)) {
+ if (get_option_uid(args, &vol->backupuid)) {
cERROR(1, "%s: Invalid backupuid value",
__func__);
goto cifs_parse_mount_err;
}
- vol->backupuid = option;
vol->backupuid_specified = true;
break;
case Opt_backupgid:
- if (get_option_ul(args, &option)) {
+ if (get_option_gid(args, &vol->backupgid)) {
cERROR(1, "%s: Invalid backupgid value",
__func__);
goto cifs_parse_mount_err;
}
- vol->backupgid = option;
vol->backupgid_specified = true;
break;
case Opt_uid:
- if (get_option_ul(args, &option)) {
+ if (get_option_uid(args, &vol->linux_uid)) {
cERROR(1, "%s: Invalid uid value",
__func__);
goto cifs_parse_mount_err;
}
- vol->linux_uid = option;
uid_specified = true;
break;
case Opt_cruid:
- if (get_option_ul(args, &option)) {
+ if (get_option_uid(args, &vol->cred_uid)) {
cERROR(1, "%s: Invalid cruid value",
__func__);
goto cifs_parse_mount_err;
}
- vol->cred_uid = option;
break;
case Opt_gid:
- if (get_option_ul(args, &option)) {
+ if (get_option_gid(args, &vol->linux_gid)) {
cERROR(1, "%s: Invalid gid value",
__func__);
goto cifs_parse_mount_err;
}
- vol->linux_gid = option;
gid_specified = true;
break;
case Opt_file_mode:
@@ -2241,7 +2271,7 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol)
{
switch (ses->server->secType) {
case Kerberos:
- if (vol->cred_uid != ses->cred_uid)
+ if (!uid_eq(vol->cred_uid, ses->cred_uid))
return 0;
break;
default:
@@ -2713,7 +2743,7 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data)
if (new->rsize && new->rsize < old->rsize)
return 0;
- if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid)
+ if (!uid_eq(old->mnt_uid, new->mnt_uid) || !gid_eq(old->mnt_gid, new->mnt_gid))
return 0;
if (old->mnt_file_mode != new->mnt_file_mode ||
@@ -3919,7 +3949,7 @@ cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses)
}
static struct cifs_tcon *
-cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
+cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
{
int rc;
struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb);
@@ -3989,7 +4019,7 @@ cifs_sb_tcon_pending_wait(void *unused)
/* find and return a tlink with given uid */
static struct tcon_link *
-tlink_rb_search(struct rb_root *root, uid_t uid)
+tlink_rb_search(struct rb_root *root, kuid_t uid)
{
struct rb_node *node = root->rb_node;
struct tcon_link *tlink;
@@ -3997,9 +4027,9 @@ tlink_rb_search(struct rb_root *root, uid_t uid)
while (node) {
tlink = rb_entry(node, struct tcon_link, tl_rbnode);
- if (tlink->tl_uid > uid)
+ if (uid_gt(tlink->tl_uid, uid))
node = node->rb_left;
- else if (tlink->tl_uid < uid)
+ else if (uid_lt(tlink->tl_uid, uid))
node = node->rb_right;
else
return tlink;
@@ -4018,7 +4048,7 @@ tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink)
tlink = rb_entry(*new, struct tcon_link, tl_rbnode);
parent = *new;
- if (tlink->tl_uid > new_tlink->tl_uid)
+ if (uid_gt(tlink->tl_uid, new_tlink->tl_uid))
new = &((*new)->rb_left);
else
new = &((*new)->rb_right);
@@ -4048,7 +4078,7 @@ struct tcon_link *
cifs_sb_tlink(struct cifs_sb_info *cifs_sb)
{
int ret;
- uid_t fsuid = current_fsuid();
+ kuid_t fsuid = current_fsuid();
struct tcon_link *tlink, *newtlink;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER))
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 8719bbe0dcc3..1cd016217448 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -342,14 +342,14 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
*created |= FILE_CREATED;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
- args.uid = (__u64) current_fsuid();
+ args.uid = current_fsuid();
if (inode->i_mode & S_ISGID)
- args.gid = (__u64) inode->i_gid;
+ args.gid = inode->i_gid;
else
- args.gid = (__u64) current_fsgid();
+ args.gid = current_fsgid();
} else {
- args.uid = NO_CHANGE_64;
- args.gid = NO_CHANGE_64;
+ args.uid = INVALID_UID; /* no change */
+ args.gid = INVALID_GID; /* no change */
}
CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid->netfid,
current->tgid);
@@ -588,11 +588,11 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
.device = device_number,
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
- args.uid = (__u64) current_fsuid();
- args.gid = (__u64) current_fsgid();
+ args.uid = current_fsuid();
+ args.gid = current_fsgid();
} else {
- args.uid = NO_CHANGE_64;
- args.gid = NO_CHANGE_64;
+ args.uid = INVALID_UID; /* no change */
+ args.gid = INVALID_GID; /* no change */
}
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
cifs_sb->local_nls,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8ea6ca50a665..8c0d85577314 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -43,6 +43,7 @@
#include "cifs_fs_sb.h"
#include "fscache.h"
+
static inline int cifs_convert_flags(unsigned int flags)
{
if ((flags & O_ACCMODE) == O_RDONLY)
@@ -72,10 +73,15 @@ static u32 cifs_posix_convert_flags(unsigned int flags)
else if ((flags & O_ACCMODE) == O_RDWR)
posix_flags = SMB_O_RDWR;
- if (flags & O_CREAT)
+ if (flags & O_CREAT) {
posix_flags |= SMB_O_CREAT;
- if (flags & O_EXCL)
- posix_flags |= SMB_O_EXCL;
+ if (flags & O_EXCL)
+ posix_flags |= SMB_O_EXCL;
+ } else if (flags & O_EXCL)
+ cFYI(1, "Application %s pid %d has incorrectly set O_EXCL flag"
+ "but not O_CREAT on file open. Ignoring O_EXCL",
+ current->comm, current->tgid);
+
if (flags & O_TRUNC)
posix_flags |= SMB_O_TRUNC;
/* be safe and imply O_SYNC for O_DSYNC */
@@ -515,8 +521,8 @@ int cifs_open(struct inode *inode, struct file *file)
*/
struct cifs_unix_set_info_args args = {
.mode = inode->i_mode,
- .uid = NO_CHANGE_64,
- .gid = NO_CHANGE_64,
+ .uid = INVALID_UID, /* no change */
+ .gid = INVALID_GID, /* no change */
.ctime = NO_CHANGE_64,
.atime = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
@@ -947,7 +953,7 @@ static int
cifs_posix_lock_test(struct file *file, struct file_lock *flock)
{
int rc = 0;
- struct cifsInodeInfo *cinode = CIFS_I(file->f_path.dentry->d_inode);
+ struct cifsInodeInfo *cinode = CIFS_I(file_inode(file));
unsigned char saved_type = flock->fl_type;
if ((flock->fl_flags & FL_POSIX) == 0)
@@ -974,7 +980,7 @@ cifs_posix_lock_test(struct file *file, struct file_lock *flock)
static int
cifs_posix_lock_set(struct file *file, struct file_lock *flock)
{
- struct cifsInodeInfo *cinode = CIFS_I(file->f_path.dentry->d_inode);
+ struct cifsInodeInfo *cinode = CIFS_I(file_inode(file));
int rc = 1;
if ((flock->fl_flags & FL_POSIX) == 0)
@@ -1548,7 +1554,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *flock)
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
netfid = cfile->fid.netfid;
- cinode = CIFS_I(file->f_path.dentry->d_inode);
+ cinode = CIFS_I(file_inode(file));
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
@@ -1693,7 +1699,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
are always at the end of the list but since the first entry might
have a close pending, we go through the whole list */
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
- if (fsuid_only && open_file->uid != current_fsuid())
+ if (fsuid_only && !uid_eq(open_file->uid, current_fsuid()))
continue;
if (OPEN_FMODE(open_file->f_flags) & FMODE_READ) {
if (!open_file->invalidHandle) {
@@ -1746,7 +1752,7 @@ refind_writable:
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (!any_available && open_file->pid != current->tgid)
continue;
- if (fsuid_only && open_file->uid != current_fsuid())
+ if (fsuid_only && !uid_eq(open_file->uid, current_fsuid()))
continue;
if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) {
if (!open_file->invalidHandle) {
@@ -2171,7 +2177,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
struct cifsFileInfo *smbfile = file->private_data;
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
@@ -2246,7 +2252,7 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
*/
int cifs_flush(struct file *file, fl_owner_t id)
{
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
int rc = 0;
if (file->f_mode & FMODE_WRITE)
@@ -2480,7 +2486,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
ssize_t written;
struct inode *inode;
- inode = iocb->ki_filp->f_path.dentry->d_inode;
+ inode = file_inode(iocb->ki_filp);
/*
* BB - optimize the way when signing is disabled. We can drop this
@@ -2543,7 +2549,7 @@ ssize_t
cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
- struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = (struct cifsFileInfo *)
@@ -2915,7 +2921,7 @@ ssize_t
cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
- struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = (struct cifsFileInfo *)
@@ -3063,7 +3069,7 @@ static struct vm_operations_struct cifs_file_vm_ops = {
int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
{
int rc, xid;
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
xid = get_xid();
@@ -3356,7 +3362,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
int rc;
/* Is the page cached? */
- rc = cifs_readpage_from_fscache(file->f_path.dentry->d_inode, page);
+ rc = cifs_readpage_from_fscache(file_inode(file), page);
if (rc == 0)
goto read_complete;
@@ -3371,8 +3377,8 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
else
cFYI(1, "Bytes read %d", rc);
- file->f_path.dentry->d_inode->i_atime =
- current_fs_time(file->f_path.dentry->d_inode->i_sb);
+ file_inode(file)->i_atime =
+ current_fs_time(file_inode(file)->i_sb);
if (PAGE_CACHE_SIZE > rc)
memset(read_data + rc, 0, PAGE_CACHE_SIZE - rc);
@@ -3381,7 +3387,7 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
SetPageUptodate(page);
/* send this page to the cache */
- cifs_readpage_to_fscache(file->f_path.dentry->d_inode, page);
+ cifs_readpage_to_fscache(file_inode(file), page);
rc = 0;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index ed6208ff85a7..83f2606c76d0 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -244,15 +244,25 @@ cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,
break;
}
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
- fattr->cf_uid = cifs_sb->mnt_uid;
- else
- fattr->cf_uid = le64_to_cpu(info->Uid);
-
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
- fattr->cf_gid = cifs_sb->mnt_gid;
- else
- fattr->cf_gid = le64_to_cpu(info->Gid);
+ fattr->cf_uid = cifs_sb->mnt_uid;
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) {
+ u64 id = le64_to_cpu(info->Uid);
+ if (id < ((uid_t)-1)) {
+ kuid_t uid = make_kuid(&init_user_ns, id);
+ if (uid_valid(uid))
+ fattr->cf_uid = uid;
+ }
+ }
+
+ fattr->cf_gid = cifs_sb->mnt_gid;
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) {
+ u64 id = le64_to_cpu(info->Gid);
+ if (id < ((gid_t)-1)) {
+ kgid_t gid = make_kgid(&init_user_ns, id);
+ if (gid_valid(gid))
+ fattr->cf_gid = gid;
+ }
+ }
fattr->cf_nlink = le64_to_cpu(info->Nlinks);
}
@@ -289,7 +299,7 @@ cifs_get_file_info_unix(struct file *filp)
unsigned int xid;
FILE_UNIX_BASIC_INFO find_data;
struct cifs_fattr fattr;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(filp);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = filp->private_data;
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
@@ -558,7 +568,7 @@ cifs_get_file_info(struct file *filp)
unsigned int xid;
FILE_ALL_INFO find_data;
struct cifs_fattr fattr;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(filp);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = filp->private_data;
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
@@ -806,10 +816,9 @@ static bool
inode_has_hashed_dentries(struct inode *inode)
{
struct dentry *dentry;
- struct hlist_node *p;
spin_lock(&inode->i_lock);
- hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
+ hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
spin_unlock(&inode->i_lock);
return true;
@@ -1245,14 +1254,14 @@ cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
.device = 0,
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
- args.uid = (__u64)current_fsuid();
+ args.uid = current_fsuid();
if (parent->i_mode & S_ISGID)
- args.gid = (__u64)parent->i_gid;
+ args.gid = parent->i_gid;
else
- args.gid = (__u64)current_fsgid();
+ args.gid = current_fsgid();
} else {
- args.uid = NO_CHANGE_64;
- args.gid = NO_CHANGE_64;
+ args.uid = INVALID_UID; /* no change */
+ args.gid = INVALID_GID; /* no change */
}
CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
@@ -1678,7 +1687,7 @@ cifs_invalidate_mapping(struct inode *inode)
int cifs_revalidate_file_attr(struct file *filp)
{
int rc = 0;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(filp);
struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
if (!cifs_inode_needs_reval(inode))
@@ -1735,7 +1744,7 @@ out:
int cifs_revalidate_file(struct file *filp)
{
int rc;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(filp);
rc = cifs_revalidate_file_attr(filp);
if (rc)
@@ -2013,12 +2022,12 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
if (attrs->ia_valid & ATTR_UID)
args->uid = attrs->ia_uid;
else
- args->uid = NO_CHANGE_64;
+ args->uid = INVALID_UID; /* no change */
if (attrs->ia_valid & ATTR_GID)
args->gid = attrs->ia_gid;
else
- args->gid = NO_CHANGE_64;
+ args->gid = INVALID_GID; /* no change */
if (attrs->ia_valid & ATTR_ATIME)
args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
@@ -2086,8 +2095,8 @@ static int
cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
{
unsigned int xid;
- uid_t uid = NO_CHANGE_32;
- gid_t gid = NO_CHANGE_32;
+ kuid_t uid = INVALID_UID;
+ kgid_t gid = INVALID_GID;
struct inode *inode = direntry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
@@ -2146,7 +2155,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
#ifdef CONFIG_CIFS_ACL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
- if (uid != NO_CHANGE_32 || gid != NO_CHANGE_32) {
+ if (uid_valid(uid) || gid_valid(gid)) {
rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
uid, gid);
if (rc) {
@@ -2170,7 +2179,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
#ifdef CONFIG_CIFS_ACL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
rc = id_mode_to_cifs_acl(inode, full_path, mode,
- NO_CHANGE_32, NO_CHANGE_32);
+ INVALID_UID, INVALID_GID);
if (rc) {
cFYI(1, "%s: Setting ACL failed with error: %d",
__func__, rc);
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index fd5009d56f9f..6c9f1214cf0b 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -30,7 +30,7 @@
long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
{
- struct inode *inode = filep->f_dentry->d_inode;
+ struct inode *inode = file_inode(filep);
int rc = -ENOTTY; /* strange error - but the precedent */
unsigned int xid;
struct cifs_sb_info *cifs_sb;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 3a00c0d0cead..1b15bf839f37 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -569,7 +569,7 @@ bool
backup_cred(struct cifs_sb_info *cifs_sb)
{
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) {
- if (cifs_sb->mnt_backupuid == current_fsuid())
+ if (uid_eq(cifs_sb->mnt_backupuid, current_fsuid()))
return true;
}
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) {
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index cdd6ff48246b..df40cc5fd13a 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -82,12 +82,10 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
cFYI(1, "%s: for %s", __func__, name->name);
- if (parent->d_op && parent->d_op->d_hash)
- parent->d_op->d_hash(parent, parent->d_inode, name);
- else
- name->hash = full_name_hash(name->name, name->len);
+ dentry = d_hash_and_lookup(parent, name);
+ if (unlikely(IS_ERR(dentry)))
+ return;
- dentry = d_lookup(parent, name);
if (dentry) {
int err;
@@ -505,7 +503,7 @@ static int cifs_entry_is_dot(struct cifs_dirent *de, bool is_unicode)
whether we can use the cached search results from the previous search */
static int is_dir_changed(struct file *file)
{
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
if (cifsInfo->time == 0)
@@ -778,7 +776,7 @@ int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
switch ((int) file->f_pos) {
case 0:
if (filldir(direntry, ".", 1, file->f_pos,
- file->f_path.dentry->d_inode->i_ino, DT_DIR) < 0) {
+ file_inode(file)->i_ino, DT_DIR) < 0) {
cERROR(1, "Filldir for current dir failed");
rc = -ENOMEM;
break;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.