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Diffstat (limited to 'fs/cifs/dir.c')
-rw-r--r--fs/cifs/dir.c220
1 files changed, 138 insertions, 82 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 8719bbe0dcc..3db0c5fd9a1 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -32,6 +32,7 @@
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+#include "cifs_unicode.h"
static void
renew_parental_timestamps(struct dentry *direntry)
@@ -102,7 +103,7 @@ cifs_bp_rename_retry:
namelen += (1 + temp->d_name.len);
temp = temp->d_parent;
if (temp == NULL) {
- cERROR(1, "corrupt dentry");
+ cifs_dbg(VFS, "corrupt dentry\n");
rcu_read_unlock();
return NULL;
}
@@ -124,12 +125,12 @@ cifs_bp_rename_retry:
full_path[namelen] = dirsep;
strncpy(full_path + namelen + 1, temp->d_name.name,
temp->d_name.len);
- cFYI(0, "name: %s", full_path + namelen);
+ cifs_dbg(FYI, "name: %s\n", full_path + namelen);
}
spin_unlock(&temp->d_lock);
temp = temp->d_parent;
if (temp == NULL) {
- cERROR(1, "corrupt dentry");
+ cifs_dbg(VFS, "corrupt dentry\n");
rcu_read_unlock();
kfree(full_path);
return NULL;
@@ -137,8 +138,8 @@ cifs_bp_rename_retry:
}
rcu_read_unlock();
if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
- cFYI(1, "did not end path lookup where expected. namelen=%d "
- "dfsplen=%d", namelen, dfsplen);
+ cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n",
+ namelen, dfsplen);
/* presumably this is only possible if racing with a rename
of one of the parent directories (we can not lock the dentries
above us to prevent this, but retrying should be harmless) */
@@ -178,7 +179,7 @@ check_name(struct dentry *direntry)
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
for (i = 0; i < direntry->d_name.len; i++) {
if (direntry->d_name.name[i] == '\\') {
- cFYI(1, "Invalid file name");
+ cifs_dbg(FYI, "Invalid file name\n");
return -EINVAL;
}
}
@@ -192,7 +193,7 @@ check_name(struct dentry *direntry)
static int
cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
struct tcon_link *tlink, unsigned oflags, umode_t mode,
- __u32 *oplock, struct cifs_fid *fid, int *created)
+ __u32 *oplock, struct cifs_fid *fid)
{
int rc = -ENOENT;
int create_options = CREATE_NOT_DIR;
@@ -204,6 +205,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
struct inode *newinode = NULL;
int disposition;
struct TCP_Server_Info *server = tcon->ses->server;
+ struct cifs_open_parms oparms;
*oplock = 0;
if (tcon->ses->server->oplocks)
@@ -291,7 +293,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
else if ((oflags & O_CREAT) == O_CREAT)
disposition = FILE_OPEN_IF;
else
- cFYI(1, "Create flag not set in create function");
+ cifs_dbg(FYI, "Create flag not set in create function\n");
/*
* BB add processing to set equivalent of mode - e.g. via CreateX with
@@ -319,11 +321,18 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- rc = server->ops->open(xid, tcon, full_path, disposition,
- desired_access, create_options, fid, oplock,
- buf, cifs_sb);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = desired_access;
+ oparms.create_options = create_options;
+ oparms.disposition = disposition;
+ oparms.path = full_path;
+ oparms.fid = fid;
+ oparms.reconnect = false;
+
+ rc = server->ops->open(xid, &oparms, oplock, buf);
if (rc) {
- cFYI(1, "cifs_create returned 0x%x", rc);
+ cifs_dbg(FYI, "cifs_create returned 0x%x\n", rc);
goto out;
}
@@ -340,16 +349,15 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
.device = 0,
};
- *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);
@@ -370,7 +378,7 @@ cifs_create_get_file_info:
xid);
else {
rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
- xid, &fid->netfid);
+ xid, fid);
if (newinode) {
if (server->ops->set_lease_key)
server->ops->set_lease_key(newinode, fid);
@@ -389,7 +397,8 @@ cifs_create_get_file_info:
cifs_create_set_dentry:
if (rc != 0) {
- cFYI(1, "Create worked, get_inode_info failed rc = %d", rc);
+ cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
+ rc);
if (server->ops->close)
server->ops->close(xid, tcon, fid);
goto out;
@@ -452,12 +461,14 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
xid = get_xid();
- cFYI(1, "parent inode = 0x%p name is: %s and dentry = 0x%p",
- inode, direntry->d_name.name, direntry);
+ cifs_dbg(FYI, "parent inode = 0x%p name is: %s and dentry = 0x%p\n",
+ inode, direntry->d_name.name, direntry);
tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
- if (IS_ERR(tlink))
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
goto out_free_xid;
+ }
tcon = tlink_tcon(tlink);
server = tcon->ses->server;
@@ -468,13 +479,16 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
cifs_add_pending_open(&fid, tlink, &open);
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
- &oplock, &fid, opened);
+ &oplock, &fid);
if (rc) {
cifs_del_pending_open(&open);
goto out;
}
+ if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
+ *opened |= FILE_CREATED;
+
rc = finish_open(file, direntry, generic_file_open, opened);
if (rc) {
if (server->ops->close)
@@ -488,6 +502,7 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
if (server->ops->close)
server->ops->close(xid, tcon, &fid);
cifs_del_pending_open(&open);
+ fput(file);
rc = -ENOMEM;
}
@@ -516,10 +531,9 @@ int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
struct TCP_Server_Info *server;
struct cifs_fid fid;
__u32 oplock;
- int created = FILE_CREATED;
- cFYI(1, "cifs_create parent inode = 0x%p name is: %s and dentry = 0x%p",
- inode, direntry->d_name.name, direntry);
+ cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %s and dentry = 0x%p\n",
+ inode, direntry->d_name.name, direntry);
tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
rc = PTR_ERR(tlink);
@@ -533,7 +547,7 @@ int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
server->ops->new_lease_key(&fid);
rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
- &oplock, &fid, &created);
+ &oplock, &fid);
if (!rc && server->ops->close)
server->ops->close(xid, tcon, &fid);
@@ -551,12 +565,13 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
- struct cifs_tcon *pTcon;
+ struct cifs_tcon *tcon;
struct cifs_io_parms io_parms;
char *full_path = NULL;
struct inode *newinode = NULL;
int oplock = 0;
- u16 fileHandle;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
FILE_ALL_INFO *buf = NULL;
unsigned int bytes_written;
struct win_dev *pdev;
@@ -569,7 +584,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (IS_ERR(tlink))
return PTR_ERR(tlink);
- pTcon = tlink_tcon(tlink);
+ tcon = tlink_tcon(tlink);
xid = get_xid();
@@ -579,7 +594,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
goto mknod_out;
}
- if (pTcon->unix_ext) {
+ if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = mode & ~current_umask(),
.ctime = NO_CHANGE_64,
@@ -588,13 +603,13 @@ 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,
+ rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -613,7 +628,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
goto mknod_out;
- cFYI(1, "sfu compat create special file");
+ cifs_dbg(FYI, "sfu compat create special file\n");
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (buf == NULL) {
@@ -626,42 +641,44 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE,
- GENERIC_WRITE, create_options,
- &fileHandle, &oplock, buf, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_WRITE;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_CREATE;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = CIFS_open(xid, &oparms, &oplock, buf);
if (rc)
goto mknod_out;
- /* BB Do not bother to decode buf since no local inode yet to put
- * timestamps in, but we can reuse it safely */
+ /*
+ * BB Do not bother to decode buf since no local inode yet to put
+ * timestamps in, but we can reuse it safely.
+ */
pdev = (struct win_dev *)buf;
- io_parms.netfid = fileHandle;
+ io_parms.netfid = fid.netfid;
io_parms.pid = current->tgid;
- io_parms.tcon = pTcon;
+ io_parms.tcon = tcon;
io_parms.offset = 0;
io_parms.length = sizeof(struct win_dev);
if (S_ISCHR(mode)) {
memcpy(pdev->type, "IntxCHR", 8);
- pdev->major =
- cpu_to_le64(MAJOR(device_number));
- pdev->minor =
- cpu_to_le64(MINOR(device_number));
- rc = CIFSSMBWrite(xid, &io_parms,
- &bytes_written, (char *)pdev,
- NULL, 0);
+ pdev->major = cpu_to_le64(MAJOR(device_number));
+ pdev->minor = cpu_to_le64(MINOR(device_number));
+ rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
+ NULL, 0);
} else if (S_ISBLK(mode)) {
memcpy(pdev->type, "IntxBLK", 8);
- pdev->major =
- cpu_to_le64(MAJOR(device_number));
- pdev->minor =
- cpu_to_le64(MINOR(device_number));
- rc = CIFSSMBWrite(xid, &io_parms,
- &bytes_written, (char *)pdev,
- NULL, 0);
+ pdev->major = cpu_to_le64(MAJOR(device_number));
+ pdev->minor = cpu_to_le64(MINOR(device_number));
+ rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev,
+ NULL, 0);
} /* else if (S_ISFIFO) */
- CIFSSMBClose(xid, pTcon, fileHandle);
+ CIFSSMBClose(xid, tcon, fid.netfid);
d_drop(direntry);
/* FIXME: add code here to set EAs */
@@ -688,8 +705,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
xid = get_xid();
- cFYI(1, "parent inode = 0x%p name is: %s and dentry = 0x%p",
- parent_dir_inode, direntry->d_name.name, direntry);
+ cifs_dbg(FYI, "parent inode = 0x%p name is: %s and dentry = 0x%p\n",
+ parent_dir_inode, direntry->d_name.name, direntry);
/* check whether path exists */
@@ -715,11 +732,12 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
if (direntry->d_inode != NULL) {
- cFYI(1, "non-NULL inode in lookup");
+ cifs_dbg(FYI, "non-NULL inode in lookup\n");
} else {
- cFYI(1, "NULL inode in lookup");
+ cifs_dbg(FYI, "NULL inode in lookup\n");
}
- cFYI(1, "Full path: %s inode = 0x%p", full_path, direntry->d_inode);
+ cifs_dbg(FYI, "Full path: %s inode = 0x%p\n",
+ full_path, direntry->d_inode);
if (pTcon->unix_ext) {
rc = cifs_get_inode_info_unix(&newInode, full_path,
@@ -742,7 +760,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
/* if it was once a directory (but how can we tell?) we could do
shrink_dcache_parent(direntry); */
} else if (rc != -EACCES) {
- cERROR(1, "Unexpected lookup error %d", rc);
+ cifs_dbg(FYI, "Unexpected lookup error %d\n", rc);
/* We special case check for Access Denied - since that
is a common return code */
}
@@ -807,7 +825,7 @@ cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
{
int rc = 0;
- cFYI(1, "In cifs d_delete, name = %s", direntry->d_name.name);
+ cifs_dbg(FYI, "In cifs d_delete, name = %s\n", direntry->d_name.name);
return rc;
} */
@@ -818,33 +836,71 @@ const struct dentry_operations cifs_dentry_ops = {
/* d_delete: cifs_d_delete, */ /* not needed except for debugging */
};
-static int cifs_ci_hash(const struct dentry *dentry, const struct inode *inode,
- struct qstr *q)
+static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q)
{
struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls;
unsigned long hash;
- int i;
+ wchar_t c;
+ int i, charlen;
hash = init_name_hash();
- for (i = 0; i < q->len; i++)
- hash = partial_name_hash(nls_tolower(codepage, q->name[i]),
- hash);
+ for (i = 0; i < q->len; i += charlen) {
+ charlen = codepage->char2uni(&q->name[i], q->len - i, &c);
+ /* error out if we can't convert the character */
+ if (unlikely(charlen < 0))
+ return charlen;
+ hash = partial_name_hash(cifs_toupper(c), hash);
+ }
q->hash = end_name_hash(hash);
return 0;
}
-static int cifs_ci_compare(const struct dentry *parent,
- const struct inode *pinode,
- const struct dentry *dentry, const struct inode *inode,
+static int cifs_ci_compare(const struct dentry *parent, const struct dentry *dentry,
unsigned int len, const char *str, const struct qstr *name)
{
- struct nls_table *codepage = CIFS_SB(pinode->i_sb)->local_nls;
+ struct nls_table *codepage = CIFS_SB(parent->d_sb)->local_nls;
+ wchar_t c1, c2;
+ int i, l1, l2;
- if ((name->len == len) &&
- (nls_strnicmp(codepage, name->name, str, len) == 0))
- return 0;
- return 1;
+ /*
+ * We make the assumption here that uppercase characters in the local
+ * codepage are always the same length as their lowercase counterparts.
+ *
+ * If that's ever not the case, then this will fail to match it.
+ */
+ if (name->len != len)
+ return 1;
+
+ for (i = 0; i < len; i += l1) {
+ /* Convert characters in both strings to UTF-16. */
+ l1 = codepage->char2uni(&str[i], len - i, &c1);
+ l2 = codepage->char2uni(&name->name[i], name->len - i, &c2);
+
+ /*
+ * If we can't convert either character, just declare it to
+ * be 1 byte long and compare the original byte.
+ */
+ if (unlikely(l1 < 0 && l2 < 0)) {
+ if (str[i] != name->name[i])
+ return 1;
+ l1 = 1;
+ continue;
+ }
+
+ /*
+ * Here, we again ass|u|me that upper/lowercase versions of
+ * a character are the same length in the local NLS.
+ */
+ if (l1 != l2)
+ return 1;
+
+ /* Now compare uppercase versions of these characters */
+ if (cifs_toupper(c1) != cifs_toupper(c2))
+ return 1;
+ }
+
+ return 0;
}
const struct dentry_operations cifs_ci_dentry_ops = {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 18:14:14 +0000