/*
* fs/cifs/inode.c
*
- * Copyright (C) International Business Machines Corp., 2002,2005
+ * Copyright (C) International Business Machines Corp., 2002,2008
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+
+static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+
+ switch (inode->i_mode & S_IFMT) {
+ case S_IFREG:
+ inode->i_op = &cifs_file_inode_ops;
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ inode->i_fop = &cifs_file_direct_nobrl_ops;
+ else
+ inode->i_fop = &cifs_file_direct_ops;
+ } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ inode->i_fop = &cifs_file_nobrl_ops;
+ else { /* not direct, send byte range locks */
+ inode->i_fop = &cifs_file_ops;
+ }
+
+
+ /* check if server can support readpages */
+ if (cifs_sb->tcon->ses->server->maxBuf <
+ PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
+ inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
+ else
+ inode->i_data.a_ops = &cifs_addr_ops;
+ break;
+ case S_IFDIR:
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (is_dfs_referral) {
+ inode->i_op = &cifs_dfs_referral_inode_operations;
+ } else {
+#else /* NO DFS support, treat as a directory */
+ {
+#endif
+ inode->i_op = &cifs_dir_inode_ops;
+ inode->i_fop = &cifs_dir_ops;
+ }
+ break;
+ case S_IFLNK:
+ inode->i_op = &cifs_symlink_inode_ops;
+ break;
+ default:
+ init_special_inode(inode, inode->i_mode, inode->i_rdev);
+ break;
+ }
+}
+
+static void cifs_unix_info_to_inode(struct inode *inode,
+ FILE_UNIX_BASIC_INFO *info, int force_uid_gid)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
+ __u64 num_of_bytes = le64_to_cpu(info->NumOfBytes);
+ __u64 end_of_file = le64_to_cpu(info->EndOfFile);
+
+ inode->i_atime = cifs_NTtimeToUnix(le64_to_cpu(info->LastAccessTime));
+ inode->i_mtime =
+ cifs_NTtimeToUnix(le64_to_cpu(info->LastModificationTime));
+ inode->i_ctime = cifs_NTtimeToUnix(le64_to_cpu(info->LastStatusChange));
+ inode->i_mode = le64_to_cpu(info->Permissions);
+
+ /*
+ * Since we set the inode type below we need to mask off
+ * to avoid strange results if bits set above.
+ */
+ inode->i_mode &= ~S_IFMT;
+ switch (le32_to_cpu(info->Type)) {
+ case UNIX_FILE:
+ inode->i_mode |= S_IFREG;
+ break;
+ case UNIX_SYMLINK:
+ inode->i_mode |= S_IFLNK;
+ break;
+ case UNIX_DIR:
+ inode->i_mode |= S_IFDIR;
+ break;
+ case UNIX_CHARDEV:
+ inode->i_mode |= S_IFCHR;
+ inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
+ le64_to_cpu(info->DevMinor) & MINORMASK);
+ break;
+ case UNIX_BLOCKDEV:
+ inode->i_mode |= S_IFBLK;
+ inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
+ le64_to_cpu(info->DevMinor) & MINORMASK);
+ break;
+ case UNIX_FIFO:
+ inode->i_mode |= S_IFIFO;
+ break;
+ case UNIX_SOCKET:
+ inode->i_mode |= S_IFSOCK;
+ break;
+ default:
+ /* safest to call it a file if we do not know */
+ inode->i_mode |= S_IFREG;
+ cFYI(1, ("unknown type %d", le32_to_cpu(info->Type)));
+ break;
+ }
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) &&
+ !force_uid_gid)
+ inode->i_uid = cifs_sb->mnt_uid;
+ else
+ inode->i_uid = le64_to_cpu(info->Uid);
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) &&
+ !force_uid_gid)
+ inode->i_gid = cifs_sb->mnt_gid;
+ else
+ inode->i_gid = le64_to_cpu(info->Gid);
+
+ inode->i_nlink = le64_to_cpu(info->Nlinks);
+
+ spin_lock(&inode->i_lock);
+ if (is_size_safe_to_change(cifsInfo, end_of_file)) {
+ /*
+ * We can not safely change the file size here if the client
+ * is writing to it due to potential races.
+ */
+ i_size_write(inode, end_of_file);
+
+ /*
+ * i_blocks is not related to (i_size / i_blksize),
+ * but instead 512 byte (2**9) size is required for
+ * calculating num blocks.
+ */
+ inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
+ }
+ spin_unlock(&inode->i_lock);
+}
+
+
+/*
+ * Needed to setup inode data for the directory which is the
+ * junction to the new submount (ie to setup the fake directory
+ * which represents a DFS referral)
+ */
+static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat,
+ struct super_block *sb)
+{
+ struct inode *pinode = NULL;
+
+ memset(pfnd_dat, 0, sizeof(FILE_UNIX_BASIC_INFO));
+
+/* __le64 pfnd_dat->EndOfFile = cpu_to_le64(0);
+ __le64 pfnd_dat->NumOfBytes = cpu_to_le64(0);
+ __u64 UniqueId = 0; */
+ pfnd_dat->LastStatusChange =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->LastAccessTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->LastModificationTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->Type = cpu_to_le32(UNIX_DIR);
+ pfnd_dat->Permissions = cpu_to_le64(S_IXUGO | S_IRWXU);
+ pfnd_dat->Nlinks = cpu_to_le64(2);
+ if (sb->s_root)
+ pinode = sb->s_root->d_inode;
+ if (pinode == NULL)
+ return;
+
+ /* fill in default values for the remaining based on root
+ inode since we can not query the server for this inode info */
+ pfnd_dat->DevMajor = cpu_to_le64(MAJOR(pinode->i_rdev));
+ pfnd_dat->DevMinor = cpu_to_le64(MINOR(pinode->i_rdev));
+ pfnd_dat->Uid = cpu_to_le64(pinode->i_uid);
+ pfnd_dat->Gid = cpu_to_le64(pinode->i_gid);
+}
+
+/**
+ * cifs_new inode - create new inode, initialize, and hash it
+ * @sb - pointer to superblock
+ * @inum - if valid pointer and serverino is enabled, replace i_ino with val
+ *
+ * Create a new inode, initialize it for CIFS and hash it. Returns the new
+ * inode or NULL if one couldn't be allocated.
+ *
+ * If the share isn't mounted with "serverino" or inum is a NULL pointer then
+ * we'll just use the inode number assigned by new_inode(). Note that this can
+ * mean i_ino collisions since the i_ino assigned by new_inode is not
+ * guaranteed to be unique.
+ */
+struct inode *
+cifs_new_inode(struct super_block *sb, unsigned long *inum)
+{
+ struct inode *inode;
+
+ inode = new_inode(sb);
+ if (inode == NULL)
+ return NULL;
+
+ /*
+ * BB: Is i_ino == 0 legal? Here, we assume that it is. If it isn't we
+ * stop passing inum as ptr. Are there sanity checks we can use to
+ * ensure that the server is really filling in that field? Also,
+ * if serverino is disabled, perhaps we should be using iunique()?
+ */
+ if (inum && (CIFS_SB(sb)->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM))
+ inode->i_ino = *inum;
+
+ /*
+ * must set this here instead of cifs_alloc_inode since VFS will
+ * clobber i_flags
+ */
+ if (sb->s_flags & MS_NOATIME)
+ inode->i_flags |= S_NOATIME | S_NOCMTIME;
+
+ insert_inode_hash(inode);
+
+ return inode;
+}
+
int cifs_get_inode_info_unix(struct inode **pinode,
- const unsigned char *search_path, struct super_block *sb, int xid)
+ const unsigned char *full_path, struct super_block *sb, int xid)
{
int rc = 0;
- FILE_UNIX_BASIC_INFO findData;
+ FILE_UNIX_BASIC_INFO find_data;
struct cifsTconInfo *pTcon;
struct inode *inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- char *tmp_path;
+ bool is_dfs_referral = false;
+ struct cifsInodeInfo *cifsInfo;
+ __u64 num_of_bytes;
+ __u64 end_of_file;
pTcon = cifs_sb->tcon;
- cFYI(1, ("Getting info on %s", search_path));
+ cFYI(1, ("Getting info on %s", full_path));
+
/* could have done a find first instead but this returns more info */
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
+ rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &find_data,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
-/* dump_mem("\nUnixQPathInfo return data", &findData,
- sizeof(findData)); */
- if (rc) {
- if (rc == -EREMOTE) {
- tmp_path =
- kmalloc(strnlen(pTcon->treeName,
- MAX_TREE_SIZE + 1) +
- strnlen(search_path, MAX_PATHCONF) + 1,
- GFP_KERNEL);
- if (tmp_path == NULL) {
- return -ENOMEM;
- }
- /* have to skip first of the double backslash of
- UNC name */
- strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
- strncat(tmp_path, search_path, MAX_PATHCONF);
- rc = connect_to_dfs_path(xid, pTcon->ses,
- /* treename + */ tmp_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- kfree(tmp_path);
-
- /* BB fix up inode etc. */
- } else if (rc) {
- return rc;
- }
- } else {
- struct cifsInodeInfo *cifsInfo;
- __u32 type = le32_to_cpu(findData.Type);
- __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
- __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
+ if (rc == -EREMOTE && !is_dfs_referral) {
+ is_dfs_referral = true;
+ cFYI(DBG2, ("DFS ref"));
+ /* for DFS, server does not give us real inode data */
+ fill_fake_finddataunix(&find_data, sb);
+ rc = 0;
+ } else if (rc)
+ goto cgiiu_exit;
- /* get new inode */
- if (*pinode == NULL) {
- *pinode = new_inode(sb);
- if (*pinode == NULL)
- return -ENOMEM;
- /* Is an i_ino of zero legal? */
- /* Are there sanity checks we can use to ensure that
- the server is really filling in that field? */
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
- (*pinode)->i_ino =
- (unsigned long)findData.UniqueId;
- } /* note ino incremented to unique num in new_inode */
- if(sb->s_flags & MS_NOATIME)
- (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
-
- insert_inode_hash(*pinode);
- }
+ num_of_bytes = le64_to_cpu(find_data.NumOfBytes);
+ end_of_file = le64_to_cpu(find_data.EndOfFile);
- inode = *pinode;
- cifsInfo = CIFS_I(inode);
-
- cFYI(1, ("Old time %ld", cifsInfo->time));
- cifsInfo->time = jiffies;
- cFYI(1, ("New time %ld", cifsInfo->time));
- /* this is ok to set on every inode revalidate */
- atomic_set(&cifsInfo->inUse,1);
-
- inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
- inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu
- (findData.LastModificationTime));
- inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
- inode->i_mode = le64_to_cpu(findData.Permissions);
- /* since we set the inode type below we need to mask off
- to avoid strange results if bits set above */
- inode->i_mode &= ~S_IFMT;
- if (type == UNIX_FILE) {
- inode->i_mode |= S_IFREG;
- } else if (type == UNIX_SYMLINK) {
- inode->i_mode |= S_IFLNK;
- } else if (type == UNIX_DIR) {
- inode->i_mode |= S_IFDIR;
- } else if (type == UNIX_CHARDEV) {
- inode->i_mode |= S_IFCHR;
- inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
- le64_to_cpu(findData.DevMinor) & MINORMASK);
- } else if (type == UNIX_BLOCKDEV) {
- inode->i_mode |= S_IFBLK;
- inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
- le64_to_cpu(findData.DevMinor) & MINORMASK);
- } else if (type == UNIX_FIFO) {
- inode->i_mode |= S_IFIFO;
- } else if (type == UNIX_SOCKET) {
- inode->i_mode |= S_IFSOCK;
- } else {
- /* safest to call it a file if we do not know */
- inode->i_mode |= S_IFREG;
- cFYI(1,("unknown type %d",type));
+ /* get new inode */
+ if (*pinode == NULL) {
+ *pinode = cifs_new_inode(sb, (unsigned long *)
+ &find_data.UniqueId);
+ if (*pinode == NULL) {
+ rc = -ENOMEM;
+ goto cgiiu_exit;
}
- inode->i_uid = le64_to_cpu(findData.Uid);
- inode->i_gid = le64_to_cpu(findData.Gid);
- inode->i_nlink = le64_to_cpu(findData.Nlinks);
+ }
- spin_lock(&inode->i_lock);
- if (is_size_safe_to_change(cifsInfo, end_of_file)) {
- /* can not safely change the file size here if the
- client is writing to it due to potential races */
- i_size_write(inode, end_of_file);
+ inode = *pinode;
+ cifsInfo = CIFS_I(inode);
- /* blksize needs to be multiple of two. So safer to default to
- blksize and blkbits set in superblock so 2**blkbits and blksize
- will match rather than setting to:
- (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
+ cFYI(1, ("Old time %ld", cifsInfo->time));
+ cifsInfo->time = jiffies;
+ cFYI(1, ("New time %ld", cifsInfo->time));
+ /* this is ok to set on every inode revalidate */
+ atomic_set(&cifsInfo->inUse, 1);
- /* This seems incredibly stupid but it turns out that i_blocks
- is not related to (i_size / i_blksize), instead 512 byte size
- is required for calculating num blocks */
+ cifs_unix_info_to_inode(inode, &find_data, 0);
- /* 512 bytes (2**9) is the fake blocksize that must be used */
- /* for this calculation */
- inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
- }
- spin_unlock(&inode->i_lock);
+ if (num_of_bytes < end_of_file)
+ cFYI(1, ("allocation size less than end of file"));
+ cFYI(1, ("Size %ld and blocks %llu",
+ (unsigned long) inode->i_size,
+ (unsigned long long)inode->i_blocks));
- if (num_of_bytes < end_of_file)
- cFYI(1, ("allocation size less than end of file"));
- cFYI(1, ("Size %ld and blocks %llu",
- (unsigned long) inode->i_size,
- (unsigned long long)inode->i_blocks));
- if (S_ISREG(inode->i_mode)) {
- cFYI(1, ("File inode"));
- inode->i_op = &cifs_file_inode_ops;
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop =
- &cifs_file_direct_nobrl_ops;
- else
- inode->i_fop = &cifs_file_direct_ops;
- } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop = &cifs_file_nobrl_ops;
- else /* not direct, send byte range locks */
- inode->i_fop = &cifs_file_ops;
-
- /* check if server can support readpages */
- if(pTcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
- inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- inode->i_data.a_ops = &cifs_addr_ops;
- } else if (S_ISDIR(inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- inode->i_op = &cifs_dir_inode_ops;
- inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- inode->i_op = &cifs_symlink_inode_ops;
- /* tmp_inode->i_fop = */ /* do not need to set to anything */
- } else {
- cFYI(1, ("Init special inode"));
- init_special_inode(inode, inode->i_mode,
- inode->i_rdev);
- }
- }
+ cifs_set_ops(inode, is_dfs_referral);
+cgiiu_exit:
return rc;
}
-static int decode_sfu_inode(struct inode * inode, __u64 size,
+static int decode_sfu_inode(struct inode *inode, __u64 size,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, int xid)
{
int rc;
- int oplock = FALSE;
+ int oplock = 0;
__u16 netfid;
struct cifsTconInfo *pTcon = cifs_sb->tcon;
char buf[24];
unsigned int bytes_read;
- char * pbuf;
+ char *pbuf;
pbuf = buf;
- if(size == 0) {
+ if (size == 0) {
inode->i_mode |= S_IFIFO;
return 0;
} else if (size < 8) {
return -EINVAL; /* EOPNOTSUPP? */
}
-
+
rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
CREATE_NOT_DIR, &netfid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
+ if (rc == 0) {
int buf_type = CIFS_NO_BUFFER;
/* Read header */
rc = CIFSSMBRead(xid, pTcon,
- netfid,
+ netfid,
24 /* length */, 0 /* offset */,
&bytes_read, &pbuf, &buf_type);
- if((rc == 0) && (bytes_read >= 8)) {
- if(memcmp("IntxBLK", pbuf, 8) == 0) {
- cFYI(1,("Block device"));
+ if ((rc == 0) && (bytes_read >= 8)) {
+ if (memcmp("IntxBLK", pbuf, 8) == 0) {
+ cFYI(1, ("Block device"));
inode->i_mode |= S_IFBLK;
- if(bytes_read == 24) {
+ if (bytes_read == 24) {
/* we have enough to decode dev num */
__u64 mjr; /* major */
__u64 mnr; /* minor */
mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
inode->i_rdev = MKDEV(mjr, mnr);
}
- } else if(memcmp("IntxCHR", pbuf, 8) == 0) {
- cFYI(1,("Char device"));
+ } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
+ cFYI(1, ("Char device"));
inode->i_mode |= S_IFCHR;
- if(bytes_read == 24) {
+ if (bytes_read == 24) {
/* we have enough to decode dev num */
__u64 mjr; /* major */
__u64 mnr; /* minor */
mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
inode->i_rdev = MKDEV(mjr, mnr);
- }
- } else if(memcmp("IntxLNK", pbuf, 7) == 0) {
- cFYI(1,("Symlink"));
+ }
+ } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
+ cFYI(1, ("Symlink"));
inode->i_mode |= S_IFLNK;
} else {
inode->i_mode |= S_IFREG; /* file? */
- rc = -EOPNOTSUPP;
+ rc = -EOPNOTSUPP;
}
} else {
inode->i_mode |= S_IFREG; /* then it is a file */
- rc = -EOPNOTSUPP; /* or some unknown SFU type */
- }
+ rc = -EOPNOTSUPP; /* or some unknown SFU type */
+ }
CIFSSMBClose(xid, pTcon, netfid);
}
return rc;
-
}
#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
-static int get_sfu_uid_mode(struct inode * inode,
+static int get_sfu_mode(struct inode *inode,
const unsigned char *path,
struct cifs_sb_info *cifs_sb, int xid)
{
rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
ea_value, 4 /* size of buf */, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
- if(rc < 0)
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc < 0)
return (int)rc;
else if (rc > 3) {
mode = le32_to_cpu(*((__le32 *)ea_value));
- inode->i_mode &= ~SFBITS_MASK;
- cFYI(1,("special bits 0%o org mode 0%o", mode, inode->i_mode));
+ inode->i_mode &= ~SFBITS_MASK;
+ cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
- cFYI(1,("special mode bits 0%o", mode));
+ cFYI(1, ("special mode bits 0%o", mode));
return 0;
} else {
return 0;
#else
return -EOPNOTSUPP;
#endif
+}
-
+/*
+ * Needed to setup inode data for the directory which is the
+ * junction to the new submount (ie to setup the fake directory
+ * which represents a DFS referral)
+ */
+static void fill_fake_finddata(FILE_ALL_INFO *pfnd_dat,
+ struct super_block *sb)
+{
+ memset(pfnd_dat, 0, sizeof(FILE_ALL_INFO));
+
+/* __le64 pfnd_dat->AllocationSize = cpu_to_le64(0);
+ __le64 pfnd_dat->EndOfFile = cpu_to_le64(0);
+ __u8 pfnd_dat->DeletePending = 0;
+ __u8 pfnd_data->Directory = 0;
+ __le32 pfnd_dat->EASize = 0;
+ __u64 pfnd_dat->IndexNumber = 0;
+ __u64 pfnd_dat->IndexNumber1 = 0; */
+ pfnd_dat->CreationTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->LastAccessTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->LastWriteTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->ChangeTime =
+ cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ pfnd_dat->Attributes = cpu_to_le32(ATTR_DIRECTORY);
+ pfnd_dat->NumberOfLinks = cpu_to_le32(2);
}
int cifs_get_inode_info(struct inode **pinode,
- const unsigned char *search_path, FILE_ALL_INFO *pfindData,
- struct super_block *sb, int xid)
+ const unsigned char *full_path, FILE_ALL_INFO *pfindData,
+ struct super_block *sb, int xid, const __u16 *pfid)
{
int rc = 0;
+ __u32 attr;
+ struct cifsInodeInfo *cifsInfo;
struct cifsTconInfo *pTcon;
struct inode *inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- char *tmp_path;
char *buf = NULL;
- int adjustTZ = FALSE;
+ bool adjustTZ = false;
+ bool is_dfs_referral = false;
+ umode_t default_mode;
pTcon = cifs_sb->tcon;
- cFYI(1,("Getting info on %s", search_path));
+ cFYI(1, ("Getting info on %s", full_path));
if ((pfindData == NULL) && (*pinode != NULL)) {
if (CIFS_I(*pinode)->clientCanCacheRead) {
- cFYI(1,("No need to revalidate cached inode sizes"));
+ cFYI(1, ("No need to revalidate cached inode sizes"));
return rc;
}
}
if (buf == NULL)
return -ENOMEM;
pfindData = (FILE_ALL_INFO *)buf;
+
/* could do find first instead but this returns more info */
- rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
+ rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData,
0 /* not legacy */,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
/* BB optimize code so we do not make the above call
when server claims no NT SMB support and the above call
failed at least once - set flag in tcon or mount */
- if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
- rc = SMBQueryInformation(xid, pTcon, search_path,
- pfindData, cifs_sb->local_nls,
+ if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
+ rc = SMBQueryInformation(xid, pTcon, full_path,
+ pfindData, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- adjustTZ = TRUE;
+ adjustTZ = true;
}
-
}
/* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
- if (rc) {
- if (rc == -EREMOTE) {
- tmp_path =
- kmalloc(strnlen
- (pTcon->treeName,
- MAX_TREE_SIZE + 1) +
- strnlen(search_path, MAX_PATHCONF) + 1,
- GFP_KERNEL);
- if (tmp_path == NULL) {
- kfree(buf);
- return -ENOMEM;
- }
+ if (rc == -EREMOTE) {
+ is_dfs_referral = true;
+ fill_fake_finddata(pfindData, sb);
+ rc = 0;
+ } else if (rc)
+ goto cgii_exit;
- strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
- strncat(tmp_path, search_path, MAX_PATHCONF);
- rc = connect_to_dfs_path(xid, pTcon->ses,
- /* treename + */ tmp_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- kfree(tmp_path);
- /* BB fix up inode etc. */
- } else if (rc) {
- kfree(buf);
- return rc;
- }
- } else {
- struct cifsInodeInfo *cifsInfo;
- __u32 attr = le32_to_cpu(pfindData->Attributes);
+ attr = le32_to_cpu(pfindData->Attributes);
- /* get new inode */
- if (*pinode == NULL) {
- *pinode = new_inode(sb);
- if (*pinode == NULL) {
- kfree(buf);
- return -ENOMEM;
- }
- /* Is an i_ino of zero legal? Can we use that to check
- if the server supports returning inode numbers? Are
- there other sanity checks we can use to ensure that
- the server is really filling in that field? */
-
- /* We can not use the IndexNumber field by default from
- Windows or Samba (in ALL_INFO buf) but we can request
- it explicitly. It may not be unique presumably if
- the server has multiple devices mounted under one
- share */
-
- /* There may be higher info levels that work but are
- there Windows server or network appliances for which
- IndexNumber field is not guaranteed unique? */
-
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
- int rc1 = 0;
- __u64 inode_num;
-
- rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
- search_path, &inode_num,
+ /* get new inode */
+ if (*pinode == NULL) {
+ __u64 inode_num;
+
+ /* Is an i_ino of zero legal? Can we use that to check
+ if the server supports returning inode numbers? Are
+ there other sanity checks we can use to ensure that
+ the server is really filling in that field? */
+
+ /* We can not use the IndexNumber field by default from
+ Windows or Samba (in ALL_INFO buf) but we can request
+ it explicitly. It may not be unique presumably if
+ the server has multiple devices mounted under one share */
+
+ /* There may be higher info levels that work but are
+ there Windows server or network appliances for which
+ IndexNumber field is not guaranteed unique? */
+
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
+ int rc1 = 0;
+
+ rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
+ full_path, &inode_num,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc1) {
- cFYI(1,("GetSrvInodeNum rc %d", rc1));
- /* BB EOPNOSUPP disable SERVER_INUM? */
- } else /* do we need cast or hash to ino? */
- (*pinode)->i_ino = inode_num;
- } /* else ino incremented to unique num in new_inode*/
- if(sb->s_flags & MS_NOATIME)
- (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
- insert_inode_hash(*pinode);
+ if (rc1) {
+ cFYI(1, ("GetSrvInodeNum rc %d", rc1));
+ /* BB EOPNOSUPP disable SERVER_INUM? */
+ }
+ *pinode = cifs_new_inode(sb, (unsigned long *)
+ &inode_num);
+ } else {
+ *pinode = cifs_new_inode(sb, NULL);
}
- inode = *pinode;
- cifsInfo = CIFS_I(inode);
- cifsInfo->cifsAttrs = attr;
- cFYI(1, ("Old time %ld", cifsInfo->time));
- cifsInfo->time = jiffies;
- cFYI(1, ("New time %ld", cifsInfo->time));
-
- /* blksize needs to be multiple of two. So safer to default to
- blksize and blkbits set in superblock so 2**blkbits and blksize
- will match rather than setting to:
- (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
-
- /* Linux can not store file creation time so ignore it */
- if(pfindData->LastAccessTime)
- inode->i_atime = cifs_NTtimeToUnix
- (le64_to_cpu(pfindData->LastAccessTime));
- else /* do not need to use current_fs_time - time not stored */
- inode->i_atime = CURRENT_TIME;
- inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
- inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
- cFYI(0, ("Attributes came in as 0x%x", attr));
- if(adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
- inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
- inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
+
+ if (*pinode == NULL) {
+ rc = -ENOMEM;
+ goto cgii_exit;
}
+ }
+ inode = *pinode;
+ cifsInfo = CIFS_I(inode);
+ cifsInfo->cifsAttrs = attr;
+ cifsInfo->delete_pending = pfindData->DeletePending ? true : false;
+ cFYI(1, ("Old time %ld", cifsInfo->time));
+ cifsInfo->time = jiffies;
+ cFYI(1, ("New time %ld", cifsInfo->time));
+
+ /* blksize needs to be multiple of two. So safer to default to
+ blksize and blkbits set in superblock so 2**blkbits and blksize
+ will match rather than setting to:
+ (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
+
+ /* Linux can not store file creation time so ignore it */
+ if (pfindData->LastAccessTime)
+ inode->i_atime = cifs_NTtimeToUnix
+ (le64_to_cpu(pfindData->LastAccessTime));
+ else /* do not need to use current_fs_time - time not stored */
+ inode->i_atime = CURRENT_TIME;
+ inode->i_mtime =
+ cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
+ inode->i_ctime =
+ cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
+ cFYI(DBG2, ("Attributes came in as 0x%x", attr));
+ if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
+ inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
+ inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
+ }
- /* set default mode. will override for dirs below */
- if (atomic_read(&cifsInfo->inUse) == 0)
- /* new inode, can safely set these fields */
- inode->i_mode = cifs_sb->mnt_file_mode;
- else /* since we set the inode type below we need to mask off
- to avoid strange results if type changes and both get orred in */
- inode->i_mode &= ~S_IFMT;
-/* if (attr & ATTR_REPARSE) */
- /* We no longer handle these as symlinks because we could not
- follow them due to the absolute path with drive letter */
- if (attr & ATTR_DIRECTORY) {
- /* override default perms since we do not do byte range locking
- on dirs */
- inode->i_mode = cifs_sb->mnt_dir_mode;
- inode->i_mode |= S_IFDIR;
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
- /* No need to le64 convert size of zero */
- (pfindData->EndOfFile == 0)) {
- inode->i_mode = cifs_sb->mnt_file_mode;
+ /* get default inode mode */
+ if (attr & ATTR_DIRECTORY)
+ default_mode = cifs_sb->mnt_dir_mode;
+ else
+ default_mode = cifs_sb->mnt_file_mode;
+
+ /* set permission bits */
+ if (atomic_read(&cifsInfo->inUse) == 0 ||
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
+ inode->i_mode = default_mode;
+ else {
+ /* just reenable write bits if !ATTR_READONLY */
+ if ((inode->i_mode & S_IWUGO) == 0 &&
+ (attr & ATTR_READONLY) == 0)
+ inode->i_mode |= (S_IWUGO & default_mode);
+
+ inode->i_mode &= ~S_IFMT;
+ }
+ /* clear write bits if ATTR_READONLY is set */
+ if (attr & ATTR_READONLY)
+ inode->i_mode &= ~S_IWUGO;
+
+ /* set inode type */
+ if ((attr & ATTR_SYSTEM) &&
+ (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) {
+ /* no need to fix endianness on 0 */
+ if (pfindData->EndOfFile == 0)
inode->i_mode |= S_IFIFO;
-/* BB Finish for SFU style symlinks and devices */
- } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
- (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
- if (decode_sfu_inode(inode,
- le64_to_cpu(pfindData->EndOfFile),
- search_path,
- cifs_sb, xid)) {
- cFYI(1,("Unrecognized sfu inode type"));
- }
- cFYI(1,("sfu mode 0%o",inode->i_mode));
- } else {
+ else if (decode_sfu_inode(inode,
+ le64_to_cpu(pfindData->EndOfFile),
+ full_path, cifs_sb, xid))
+ cFYI(1, ("unknown SFU file type\n"));
+ } else {
+ if (attr & ATTR_DIRECTORY)
+ inode->i_mode |= S_IFDIR;
+ else
inode->i_mode |= S_IFREG;
- /* treat the dos attribute of read-only as read-only
- mode e.g. 555 */
- if (cifsInfo->cifsAttrs & ATTR_READONLY)
- inode->i_mode &= ~(S_IWUGO);
- /* BB add code here -
- validate if device or weird share or device type? */
- }
-
- spin_lock(&inode->i_lock);
- if (is_size_safe_to_change(cifsInfo, le64_to_cpu(pfindData->EndOfFile))) {
- /* can not safely shrink the file size here if the
- client is writing to it due to potential races */
- i_size_write(inode,le64_to_cpu(pfindData->EndOfFile));
-
- /* 512 bytes (2**9) is the fake blocksize that must be
- used for this calculation */
- inode->i_blocks = (512 - 1 + le64_to_cpu(
- pfindData->AllocationSize)) >> 9;
- }
- spin_unlock(&inode->i_lock);
+ }
- inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
-
- /* BB fill in uid and gid here? with help from winbind?
- or retrieve from NTFS stream extended attribute */
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
- /* fill in uid, gid, mode from server ACL */
- get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
- } else if (atomic_read(&cifsInfo->inUse) == 0) {
- inode->i_uid = cifs_sb->mnt_uid;
- inode->i_gid = cifs_sb->mnt_gid;
- /* set so we do not keep refreshing these fields with
- bad data after user has changed them in memory */
- atomic_set(&cifsInfo->inUse,1);
- }
+ spin_lock(&inode->i_lock);
+ if (is_size_safe_to_change(cifsInfo,
+ le64_to_cpu(pfindData->EndOfFile))) {
+ /* can not safely shrink the file size here if the
+ client is writing to it due to potential races */
+ i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
- if (S_ISREG(inode->i_mode)) {
- cFYI(1, ("File inode"));
- inode->i_op = &cifs_file_inode_ops;
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop =
- &cifs_file_direct_nobrl_ops;
- else
- inode->i_fop = &cifs_file_direct_ops;
- } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop = &cifs_file_nobrl_ops;
- else /* not direct, send byte range locks */
- inode->i_fop = &cifs_file_ops;
-
- if(pTcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
- inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- inode->i_data.a_ops = &cifs_addr_ops;
- } else if (S_ISDIR(inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- inode->i_op = &cifs_dir_inode_ops;
- inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- inode->i_op = &cifs_symlink_inode_ops;
- } else {
- init_special_inode(inode, inode->i_mode,
- inode->i_rdev);
- }
+ /* 512 bytes (2**9) is the fake blocksize that must be
+ used for this calculation */
+ inode->i_blocks = (512 - 1 + le64_to_cpu(
+ pfindData->AllocationSize)) >> 9;
+ }
+ spin_unlock(&inode->i_lock);
+
+ inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
+
+ /* BB fill in uid and gid here? with help from winbind?
+ or retrieve from NTFS stream extended attribute */
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ /* fill in 0777 bits from ACL */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
+ cFYI(1, ("Getting mode bits from ACL"));
+ acl_to_uid_mode(inode, full_path, pfid);
+ }
+#endif
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
+ /* fill in remaining high mode bits e.g. SUID, VTX */
+ get_sfu_mode(inode, full_path, cifs_sb, xid);
+ } else if (atomic_read(&cifsInfo->inUse) == 0) {
+ inode->i_uid = cifs_sb->mnt_uid;
+ inode->i_gid = cifs_sb->mnt_gid;
+ /* set so we do not keep refreshing these fields with
+ bad data after user has changed them in memory */
+ atomic_set(&cifsInfo->inUse, 1);
}
+
+ cifs_set_ops(inode, is_dfs_referral);
+
+
+
+
+cgii_exit:
kfree(buf);
return rc;
}
+static const struct inode_operations cifs_ipc_inode_ops = {
+ .lookup = cifs_lookup,
+};
+
+char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
+{
+ int pplen = cifs_sb->prepathlen;
+ int dfsplen;
+ char *full_path = NULL;
+
+ /* if no prefix path, simply set path to the root of share to "" */
+ if (pplen == 0) {
+ full_path = kmalloc(1, GFP_KERNEL);
+ if (full_path)
+ full_path[0] = 0;
+ return full_path;
+ }
+
+ if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS))
+ dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1);
+ else
+ dfsplen = 0;
+
+ full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
+ if (full_path == NULL)
+ return full_path;
+
+ if (dfsplen) {
+ strncpy(full_path, cifs_sb->tcon->treeName, dfsplen);
+ /* switch slash direction in prepath depending on whether
+ * windows or posix style path names
+ */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+ int i;
+ for (i = 0; i < dfsplen; i++) {
+ if (full_path[i] == '\\')
+ full_path[i] = '/';
+ }
+ }
+ }
+ strncpy(full_path + dfsplen, cifs_sb->prepath, pplen);
+ full_path[dfsplen + pplen] = 0; /* add trailing null */
+ return full_path;
+}
+
/* gets root inode */
-void cifs_read_inode(struct inode *inode)
+struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
{
int xid;
struct cifs_sb_info *cifs_sb;
+ struct inode *inode;
+ long rc;
+ char *full_path;
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
cifs_sb = CIFS_SB(inode->i_sb);
+ full_path = cifs_build_path_to_root(cifs_sb);
+ if (full_path == NULL)
+ return ERR_PTR(-ENOMEM);
+
xid = GetXid();
- if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
- cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid);
+ if (cifs_sb->tcon->unix_ext)
+ rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
+ xid);
else
- cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid);
- /* can not call macro FreeXid here since in a void func */
+ rc = cifs_get_inode_info(&inode, full_path, NULL, inode->i_sb,
+ xid, NULL);
+ if (rc && cifs_sb->tcon->ipc) {
+ cFYI(1, ("ipc connection - fake read inode"));
+ inode->i_mode |= S_IFDIR;
+ inode->i_nlink = 2;
+ inode->i_op = &cifs_ipc_inode_ops;
+ inode->i_fop = &simple_dir_operations;
+ inode->i_uid = cifs_sb->mnt_uid;
+ inode->i_gid = cifs_sb->mnt_gid;
+ } else if (rc) {
+ kfree(full_path);
+ _FreeXid(xid);
+ iget_failed(inode);
+ return ERR_PTR(rc);
+ }
+
+ unlock_new_inode(inode);
+
+ kfree(full_path);
+ /* can not call macro FreeXid here since in a void func
+ * TODO: This is no longer true
+ */
_FreeXid(xid);
+ return inode;
+}
+
+static int
+cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid,
+ char *full_path, __u32 dosattr)
+{
+ int rc;
+ int oplock = 0;
+ __u16 netfid;
+ __u32 netpid;
+ bool set_time = false;
+ struct cifsFileInfo *open_file;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ FILE_BASIC_INFO info_buf;
+
+ if (attrs->ia_valid & ATTR_ATIME) {
+ set_time = true;
+ info_buf.LastAccessTime =
+ cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
+ } else
+ info_buf.LastAccessTime = 0;
+
+ if (attrs->ia_valid & ATTR_MTIME) {
+ set_time = true;
+ info_buf.LastWriteTime =
+ cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
+ } else
+ info_buf.LastWriteTime = 0;
+
+ /*
+ * Samba throws this field away, but windows may actually use it.
+ * Do not set ctime unless other time stamps are changed explicitly
+ * (i.e. by utimes()) since we would then have a mix of client and
+ * server times.
+ */
+ if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
+ cFYI(1, ("CIFS - CTIME changed"));
+ info_buf.ChangeTime =
+ cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
+ } else
+ info_buf.ChangeTime = 0;
+
+ info_buf.CreationTime = 0; /* don't change */
+ info_buf.Attributes = cpu_to_le32(dosattr);
+
+ /*
+ * If the file is already open for write, just use that fileid
+ */
+ open_file = find_writable_file(cifsInode);
+ if (open_file) {
+ netfid = open_file->netfid;
+ netpid = open_file->pid;
+ goto set_via_filehandle;
+ }
+
+ /*
+ * NT4 apparently returns success on this call, but it doesn't
+ * really work.
+ */
+ if (!(pTcon->ses->flags & CIFS_SES_NT4)) {
+ rc = CIFSSMBSetPathInfo(xid, pTcon, full_path,
+ &info_buf, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc == 0) {
+ cifsInode->cifsAttrs = dosattr;
+ goto out;
+ } else if (rc != -EOPNOTSUPP && rc != -EINVAL)
+ goto out;
+ }
+
+ cFYI(1, ("calling SetFileInfo since SetPathInfo for "
+ "times not supported by this server"));
+ rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
+ SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
+ CREATE_NOT_DIR, &netfid, &oplock,
+ NULL, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc != 0) {
+ if (rc == -EIO)
+ rc = -EINVAL;
+ goto out;
+ }
+
+ netpid = current->tgid;
+
+set_via_filehandle:
+ rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid);
+ if (!rc)
+ cifsInode->cifsAttrs = dosattr;
+
+ if (open_file == NULL)
+ CIFSSMBClose(xid, pTcon, netfid);
+ else
+ atomic_dec(&open_file->wrtPending);
+out:
+ return rc;
+}
+
+/*
+ * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
+ * and rename it to a random name that hopefully won't conflict with
+ * anything else.
+ */
+static int
+cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid)
+{
+ int oplock = 0;
+ int rc;
+ __u16 netfid;
+ struct inode *inode = dentry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ __u32 dosattr, origattr;
+ FILE_BASIC_INFO *info_buf = NULL;
+
+ rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
+ DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
+ &netfid, &oplock, NULL, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc != 0)
+ goto out;
+
+ origattr = cifsInode->cifsAttrs;
+ if (origattr == 0)
+ origattr |= ATTR_NORMAL;
+
+ dosattr = origattr & ~ATTR_READONLY;
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
+ dosattr |= ATTR_HIDDEN;
+
+ /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
+ if (dosattr != origattr) {
+ info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
+ if (info_buf == NULL) {
+ rc = -ENOMEM;
+ goto out_close;
+ }
+ info_buf->Attributes = cpu_to_le32(dosattr);
+ rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid);
+ /* although we would like to mark the file hidden
+ if that fails we will still try to rename it */
+ if (rc != 0)
+ cifsInode->cifsAttrs = dosattr;
+ else
+ dosattr = origattr; /* since not able to change them */
+ }
+
+ /* rename the file */
+ rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_setattr;
+ }
+
+ /* try to set DELETE_ON_CLOSE */
+ if (!cifsInode->delete_pending) {
+ rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
+ current->tgid);
+ /*
+ * some samba versions return -ENOENT when we try to set the
+ * file disposition here. Likely a samba bug, but work around
+ * it for now. This means that some cifsXXX files may hang
+ * around after they shouldn't.
+ *
+ * BB: remove this hack after more servers have the fix
+ */
+ if (rc == -ENOENT)
+ rc = 0;
+ else if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_rename;
+ }
+ cifsInode->delete_pending = true;
+ }
+
+out_close:
+ CIFSSMBClose(xid, tcon, netfid);
+out:
+ kfree(info_buf);
+ return rc;
+
+ /*
+ * reset everything back to the original state. Don't bother
+ * dealing with errors here since we can't do anything about
+ * them anyway.
+ */
+undo_rename:
+ CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+undo_setattr:
+ if (dosattr != origattr) {
+ info_buf->Attributes = cpu_to_le32(origattr);
+ if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid))
+ cifsInode->cifsAttrs = origattr;
+ }
+
+ goto out_close;
}
-int cifs_unlink(struct inode *inode, struct dentry *direntry)
+int cifs_unlink(struct inode *dir, struct dentry *dentry)
{
int rc = 0;
int xid;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
char *full_path = NULL;
- struct cifsInodeInfo *cifsInode;
- FILE_BASIC_INFO *pinfo_buf;
+ struct inode *inode = dentry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct super_block *sb = dir->i_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct iattr *attrs = NULL;
+ __u32 dosattr = 0, origattr = 0;
- cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
+ cFYI(1, ("cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry));
xid = GetXid();
- if(inode)
- cifs_sb = CIFS_SB(inode->i_sb);
- else
- cifs_sb = CIFS_SB(direntry->d_sb);
- pTcon = cifs_sb->tcon;
-
- /* Unlink can be called from rename so we can not grab the sem here
- since we deadlock otherwise */
-/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
- full_path = build_path_from_dentry(direntry);
-/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
+ /* Unlink can be called from rename so we can not take the
+ * sb->s_vfs_rename_mutex here */
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
}
- rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
+
+ if ((tcon->ses->capabilities & CAP_UNIX) &&
+ (CIFS_UNIX_POSIX_PATH_OPS_CAP &
+ le64_to_cpu(tcon->fsUnixInfo.Capability))) {
+ rc = CIFSPOSIXDelFile(xid, tcon, full_path,
+ SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cFYI(1, ("posix del rc %d", rc));
+ if ((rc == 0) || (rc == -ENOENT))
+ goto psx_del_no_retry;
+ }
+
+retry_std_delete:
+ rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+psx_del_no_retry:
if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ if (inode)
+ drop_nlink(inode);
} else if (rc == -ENOENT) {
- d_drop(direntry);
+ d_drop(dentry);
} else if (rc == -ETXTBSY) {
- int oplock = FALSE;
- __u16 netfid;
-
- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
- CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ rc = cifs_rename_pending_delete(full_path, dentry, xid);
+ if (rc == 0)
+ drop_nlink(inode);
+ } else if (rc == -EACCES && dosattr == 0) {
+ attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
+ if (attrs == NULL) {
+ rc = -ENOMEM;
+ goto out_reval;
}
- } else if (rc == -EACCES) {
- /* try only if r/o attribute set in local lookup data? */
- pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
- if (pinfo_buf) {
- /* ATTRS set to normal clears r/o bit */
- pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
- if (!(pTcon->ses->flags & CIFS_SES_NT4))
- rc = CIFSSMBSetTimes(xid, pTcon, full_path,
- pinfo_buf,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- else
- rc = -EOPNOTSUPP;
- if (rc == -EOPNOTSUPP) {
- int oplock = FALSE;
- __u16 netfid;
- /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
- full_path,
- (__u16)ATTR_NORMAL,
- cifs_sb->local_nls);
- For some strange reason it seems that NT4 eats the
- old setattr call without actually setting the
- attributes so on to the third attempted workaround
- */
-
- /* BB could scan to see if we already have it open
- and pass in pid of opener to function */
- rc = CIFSSMBOpen(xid, pTcon, full_path,
- FILE_OPEN, SYNCHRONIZE |
- FILE_WRITE_ATTRIBUTES, 0,
- &netfid, &oplock, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- rc = CIFSSMBSetFileTimes(xid, pTcon,
- pinfo_buf,
- netfid);
- CIFSSMBClose(xid, pTcon, netfid);
- }
- }
- kfree(pinfo_buf);
- }
- if (rc==0) {
- rc = CIFSSMBDelFile(xid, pTcon, full_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
- } else if (rc == -ETXTBSY) {
- int oplock = FALSE;
- __u16 netfid;
-
- rc = CIFSSMBOpen(xid, pTcon, full_path,
- FILE_OPEN, DELETE,
- CREATE_NOT_DIR |
- CREATE_DELETE_ON_CLOSE,
- &netfid, &oplock, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- CIFSSMBRenameOpenFile(xid, pTcon,
- netfid, NULL,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
- }
- /* BB if rc = -ETXTBUSY goto the rename logic BB */
- }
- }
+ /* try to reset dos attributes */
+ origattr = cifsInode->cifsAttrs;
+ if (origattr == 0)
+ origattr |= ATTR_NORMAL;
+ dosattr = origattr & ~ATTR_READONLY;
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
+ dosattr |= ATTR_HIDDEN;
+
+ rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
+ if (rc != 0)
+ goto out_reval;
+
+ goto retry_std_delete;
}
- if (direntry->d_inode) {
- cifsInode = CIFS_I(direntry->d_inode);
+
+ /* undo the setattr if we errored out and it's needed */
+ if (rc != 0 && dosattr != 0)
+ cifs_set_file_info(inode, attrs, xid, full_path, origattr);
+
+out_reval:
+ if (inode) {
+ cifsInode = CIFS_I(inode);
cifsInode->time = 0; /* will force revalidate to get info
when needed */
- direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
- }
- if(inode) {
- inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
- cifsInode = CIFS_I(inode);
- cifsInode->time = 0; /* force revalidate of dir as well */
+ inode->i_ctime = current_fs_time(sb);
}
+ dir->i_ctime = dir->i_mtime = current_fs_time(sb);
+ cifsInode = CIFS_I(dir);
+ CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
kfree(full_path);
+ kfree(attrs);
FreeXid(xid);
return rc;
}
+static void posix_fill_in_inode(struct inode *tmp_inode,
+ FILE_UNIX_BASIC_INFO *pData, int isNewInode)
+{
+ struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
+ loff_t local_size;
+ struct timespec local_mtime;
+
+ cifsInfo->time = jiffies;
+ atomic_inc(&cifsInfo->inUse);
+
+ /* save mtime and size */
+ local_mtime = tmp_inode->i_mtime;
+ local_size = tmp_inode->i_size;
+
+ cifs_unix_info_to_inode(tmp_inode, pData, 1);
+ cifs_set_ops(tmp_inode, false);
+
+ if (!S_ISREG(tmp_inode->i_mode))
+ return;
+
+ /*
+ * No sense invalidating pages for new inode
+ * since we we have not started caching
+ * readahead file data yet.
+ */
+ if (isNewInode)
+ return;
+
+ if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
+ (local_size == tmp_inode->i_size)) {
+ cFYI(1, ("inode exists but unchanged"));
+ } else {
+ /* file may have changed on server */
+ cFYI(1, ("invalidate inode, readdir detected change"));
+ invalidate_remote_inode(tmp_inode);
+ }
+}
+
int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
{
- int rc = 0;
+ int rc = 0, tmprc;
int xid;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
FreeXid(xid);
return -ENOMEM;
}
+
+ if ((pTcon->ses->capabilities & CAP_UNIX) &&
+ (CIFS_UNIX_POSIX_PATH_OPS_CAP &
+ le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
+ u32 oplock = 0;
+ FILE_UNIX_BASIC_INFO *pInfo =
+ kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
+ if (pInfo == NULL) {
+ rc = -ENOMEM;
+ goto mkdir_out;
+ }
+
+ mode &= ~current->fs->umask;
+ rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
+ mode, NULL /* netfid */, pInfo, &oplock,
+ full_path, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc == -EOPNOTSUPP) {
+ kfree(pInfo);
+ goto mkdir_retry_old;
+ } else if (rc) {
+ cFYI(1, ("posix mkdir returned 0x%x", rc));
+ d_drop(direntry);
+ } else {
+ if (pInfo->Type == cpu_to_le32(-1)) {
+ /* no return info, go query for it */
+ kfree(pInfo);
+ goto mkdir_get_info;
+ }
+/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
+ to set uid/gid */
+ inc_nlink(inode);
+ if (pTcon->nocase)
+ direntry->d_op = &cifs_ci_dentry_ops;
+ else
+ direntry->d_op = &cifs_dentry_ops;
+
+ newinode = cifs_new_inode(inode->i_sb, (unsigned long *)
+ &pInfo->UniqueId);
+ if (newinode == NULL) {
+ kfree(pInfo);
+ goto mkdir_get_info;
+ }
+
+ newinode->i_nlink = 2;
+ d_instantiate(direntry, newinode);
+
+ /* we already checked in POSIXCreate whether
+ frame was long enough */
+ posix_fill_in_inode(direntry->d_inode,
+ pInfo, 1 /* NewInode */);
+#ifdef CONFIG_CIFS_DEBUG2
+ cFYI(1, ("instantiated dentry %p %s to inode %p",
+ direntry, direntry->d_name.name, newinode));
+
+ if (newinode->i_nlink != 2)
+ cFYI(1, ("unexpected number of links %d",
+ newinode->i_nlink));
+#endif
+ }
+ kfree(pInfo);
+ goto mkdir_out;
+ }
+mkdir_retry_old:
/* BB add setting the equivalent of mode via CreateX w/ACLs */
rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
cFYI(1, ("cifs_mkdir returned 0x%x", rc));
d_drop(direntry);
} else {
+mkdir_get_info:
inc_nlink(inode);
- if (pTcon->ses->capabilities & CAP_UNIX)
+ if (pTcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
- inode->i_sb,xid);
+ inode->i_sb, xid);
else
rc = cifs_get_inode_info(&newinode, full_path, NULL,
- inode->i_sb,xid);
+ inode->i_sb, xid, NULL);
if (pTcon->nocase)
direntry->d_op = &cifs_ci_dentry_ops;
else
direntry->d_op = &cifs_dentry_ops;
d_instantiate(direntry, newinode);
- if (direntry->d_inode)
- direntry->d_inode->i_nlink = 2;
- if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
+ /* setting nlink not necessary except in cases where we
+ * failed to get it from the server or was set bogus */
+ if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
+ direntry->d_inode->i_nlink = 2;
+
+ mode &= ~current->fs->umask;
+ /* must turn on setgid bit if parent dir has it */
+ if (inode->i_mode & S_ISGID)
+ mode |= S_ISGID;
+
+ if (pTcon->unix_ext) {
+ struct cifs_unix_set_info_args args = {
+ .mode = mode,
+ .ctime = NO_CHANGE_64,
+ .atime = NO_CHANGE_64,
+ .mtime = NO_CHANGE_64,
+ .device = 0,
+ };
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
- CIFSSMBUnixSetPerms(xid, pTcon, full_path,
- mode,
- (__u64)current->fsuid,
- (__u64)current->fsgid,
- 0 /* dev_t */,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ args.uid = (__u64)current_fsuid();
+ if (inode->i_mode & S_ISGID)
+ args.gid = (__u64)inode->i_gid;
+ else
+ args.gid = (__u64)current_fsgid();
} else {
- CIFSSMBUnixSetPerms(xid, pTcon, full_path,
- mode, (__u64)-1,
- (__u64)-1, 0 /* dev_t */,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ args.uid = NO_CHANGE_64;
+ args.gid = NO_CHANGE_64;
+ }
+ CIFSSMBUnixSetInfo(xid, pTcon, full_path, &args,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ } else {
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
+ (mode & S_IWUGO) == 0) {
+ FILE_BASIC_INFO pInfo;
+ struct cifsInodeInfo *cifsInode;
+ u32 dosattrs;
+
+ memset(&pInfo, 0, sizeof(pInfo));
+ cifsInode = CIFS_I(newinode);
+ dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
+ pInfo.Attributes = cpu_to_le32(dosattrs);
+ tmprc = CIFSSMBSetPathInfo(xid, pTcon,
+ full_path, &pInfo,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tmprc == 0)
+ cifsInode->cifsAttrs = dosattrs;
}
- else {
- /* BB to be implemented via Windows secrty descriptors
- eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
- -1, -1, local_nls); */
- if(direntry->d_inode) {
- direntry->d_inode->i_mode = mode;
- direntry->d_inode->i_mode |= S_IFDIR;
- if(cifs_sb->mnt_cifs_flags &
+ if (direntry->d_inode) {
+ if (cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_DYNPERM)
+ direntry->d_inode->i_mode =
+ (mode | S_IFDIR);
+
+ if (cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_SET_UID) {
- direntry->d_inode->i_uid =
- current->fsuid;
- direntry->d_inode->i_gid =
- current->fsgid;
+ direntry->d_inode->i_uid =
+ current_fsuid();
+ if (inode->i_mode & S_ISGID)
+ direntry->d_inode->i_gid =
+ inode->i_gid;
+ else
+ direntry->d_inode->i_gid =
+ current_fsgid();
}
}
}
}
+mkdir_out:
kfree(full_path);
FreeXid(xid);
return rc;
if (!rc) {
drop_nlink(inode);
spin_lock(&direntry->d_inode->i_lock);
- i_size_write(direntry->d_inode,0);
+ i_size_write(direntry->d_inode, 0);
clear_nlink(direntry->d_inode);
spin_unlock(&direntry->d_inode->i_lock);
}
cifsInode = CIFS_I(direntry->d_inode);
cifsInode->time = 0; /* force revalidate to go get info when
needed */
+
+ cifsInode = CIFS_I(inode);
+ cifsInode->time = 0; /* force revalidate to get parent dir info
+ since cached search results now invalid */
+
direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
current_fs_time(inode->i_sb);
return rc;
}
-int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
- struct inode *target_inode, struct dentry *target_direntry)
+static int
+cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
+ struct dentry *to_dentry, const char *toPath)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ __u16 srcfid;
+ int oplock, rc;
+
+ /* try path-based rename first */
+ rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ /*
+ * don't bother with rename by filehandle unless file is busy and
+ * source Note that cross directory moves do not work with
+ * rename by filehandle to various Windows servers.
+ */
+ if (rc == 0 || rc != -ETXTBSY)
+ return rc;
+
+ /* open the file to be renamed -- we need DELETE perms */
+ rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
+ CREATE_NOT_DIR, &srcfid, &oplock, NULL,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc == 0) {
+ rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid,
+ (const char *) to_dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ CIFSSMBClose(xid, pTcon, srcfid);
+ }
+
+ return rc;
+}
+
+int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
+ struct inode *target_dir, struct dentry *target_dentry)
{
- char *fromName;
- char *toName;
+ char *fromName = NULL;
+ char *toName = NULL;
struct cifs_sb_info *cifs_sb_source;
struct cifs_sb_info *cifs_sb_target;
- struct cifsTconInfo *pTcon;
- int xid;
- int rc = 0;
+ struct cifsTconInfo *tcon;
+ FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
+ FILE_UNIX_BASIC_INFO *info_buf_target;
+ int xid, rc, tmprc;
+
+ cifs_sb_target = CIFS_SB(target_dir->i_sb);
+ cifs_sb_source = CIFS_SB(source_dir->i_sb);
+ tcon = cifs_sb_source->tcon;
xid = GetXid();
- cifs_sb_target = CIFS_SB(target_inode->i_sb);
- cifs_sb_source = CIFS_SB(source_inode->i_sb);
- pTcon = cifs_sb_source->tcon;
+ /*
+ * BB: this might be allowed if same server, but different share.
+ * Consider adding support for this
+ */
+ if (tcon != cifs_sb_target->tcon) {
+ rc = -EXDEV;
+ goto cifs_rename_exit;
+ }
- if (pTcon != cifs_sb_target->tcon) {
- FreeXid(xid);
- return -EXDEV; /* BB actually could be allowed if same server,
- but different share.
- Might eventually add support for this */
+ /*
+ * we already have the rename sem so we do not need to
+ * grab it again here to protect the path integrity
+ */
+ fromName = build_path_from_dentry(source_dentry);
+ if (fromName == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
}
- /* we already have the rename sem so we do not need to grab it again
- here to protect the path integrity */
- fromName = build_path_from_dentry(source_direntry);
- toName = build_path_from_dentry(target_direntry);
- if ((fromName == NULL) || (toName == NULL)) {
+ toName = build_path_from_dentry(target_dentry);
+ if (toName == NULL) {
rc = -ENOMEM;
goto cifs_rename_exit;
}
- rc = CIFSSMBRename(xid, pTcon, fromName, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == -EEXIST) {
- /* check if they are the same file because rename of hardlinked
- files is a noop */
- FILE_UNIX_BASIC_INFO *info_buf_source;
- FILE_UNIX_BASIC_INFO *info_buf_target;
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
+ if (rc == -EEXIST && tcon->unix_ext) {
+ /*
+ * Are src and dst hardlinks of same inode? We can
+ * only tell with unix extensions enabled
+ */
info_buf_source =
- kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
- if (info_buf_source != NULL) {
- info_buf_target = info_buf_source + 1;
- if (pTcon->ses->capabilities & CAP_UNIX)
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
- info_buf_source,
+ kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
+ GFP_KERNEL);
+ if (info_buf_source == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
+ }
+
+ info_buf_target = info_buf_source + 1;
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName,
+ info_buf_source,
cifs_sb_source->local_nls,
cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- /* else rc is still EEXIST so will fall through to
- unlink the target and retry rename */
- if (rc == 0) {
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
- info_buf_target,
- cifs_sb_target->local_nls,
- /* remap based on source sb */
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- if ((rc == 0) &&
- (info_buf_source->UniqueId ==
- info_buf_target->UniqueId)) {
- /* do not rename since the files are hardlinked which
- is a noop */
- } else {
- /* we either can not tell the files are hardlinked
- (as with Windows servers) or files are not
- hardlinked so delete the target manually before
- renaming to follow POSIX rather than Windows
- semantics */
- cifs_unlink(target_inode, target_direntry);
- rc = CIFSSMBRename(xid, pTcon, fromName,
- toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags
- & CIFS_MOUNT_MAP_SPECIAL_CHR);
- }
- kfree(info_buf_source);
- } /* if we can not get memory just leave rc as EEXIST */
- }
-
- if (rc) {
- cFYI(1, ("rename rc %d", rc));
- }
-
- if ((rc == -EIO) || (rc == -EEXIST)) {
- int oplock = FALSE;
- __u16 netfid;
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tmprc != 0)
+ goto unlink_target;
- /* BB FIXME Is Generic Read correct for rename? */
- /* if renaming directory - we should not say CREATE_NOT_DIR,
- need to test renaming open directory, also GENERIC_READ
- might not right be right access to request */
- rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, NULL,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon,
+ toName, info_buf_target,
+ cifs_sb_target->local_nls,
+ /* remap based on source sb */
+ cifs_sb_source->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
+
+ if (tmprc == 0 && (info_buf_source->UniqueId ==
+ info_buf_target->UniqueId)) {
+ /* same file, POSIX says that this is a noop */
+ rc = 0;
+ goto cifs_rename_exit;
}
+ } /* else ... BB we could add the same check for Windows by
+ checking the UniqueId via FILE_INTERNAL_INFO */
+
+unlink_target:
+ if ((rc == -EACCES) || (rc == -EEXIST)) {
+ tmprc = cifs_unlink(target_dir, target_dentry);
+ if (tmprc)
+ goto cifs_rename_exit;
+
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
}
cifs_rename_exit:
+ kfree(info_buf_source);
kfree(fromName);
kfree(toName);
FreeXid(xid);
int cifs_revalidate(struct dentry *direntry)
{
int xid;
- int rc = 0;
+ int rc = 0, wbrc = 0;
char *full_path;
struct cifs_sb_info *cifs_sb;
struct cifsInodeInfo *cifsInode;
loff_t local_size;
struct timespec local_mtime;
- int invalidate_inode = FALSE;
+ bool invalidate_inode = false;
if (direntry->d_inode == NULL)
return -ENOENT;
local_mtime = direntry->d_inode->i_mtime;
local_size = direntry->d_inode->i_size;
- if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
+ if (cifs_sb->tcon->unix_ext) {
rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
- direntry->d_sb,xid);
+ direntry->d_sb, xid);
if (rc) {
cFYI(1, ("error on getting revalidate info %d", rc));
/* if (rc != -ENOENT)
}
} else {
rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
- direntry->d_sb,xid);
+ direntry->d_sb, xid, NULL);
if (rc) {
cFYI(1, ("error on getting revalidate info %d", rc));
/* if (rc != -ENOENT)
/* if not oplocked, we invalidate inode pages if mtime or file size
had changed on server */
- if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) &&
+ if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
(local_size == direntry->d_inode->i_size)) {
cFYI(1, ("cifs_revalidate - inode unchanged"));
} else {
only ones who could have modified the file and the
server copy is staler than ours */
} else {
- invalidate_inode = TRUE;
+ invalidate_inode = true;
}
}
if (direntry->d_inode->i_mapping) {
/* do we need to lock inode until after invalidate completes
below? */
- filemap_fdatawrite(direntry->d_inode->i_mapping);
+ wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
+ if (wbrc)
+ CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
}
if (invalidate_inode) {
/* shrink_dcache not necessary now that cifs dentry ops
are exported for negative dentries */
-/* if(S_ISDIR(direntry->d_inode->i_mode))
+/* if (S_ISDIR(direntry->d_inode->i_mode))
shrink_dcache_parent(direntry); */
if (S_ISREG(direntry->d_inode->i_mode)) {
- if (direntry->d_inode->i_mapping)
- filemap_fdatawait(direntry->d_inode->i_mapping);
+ if (direntry->d_inode->i_mapping) {
+ wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
+ if (wbrc)
+ CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
+ }
/* may eventually have to do this for open files too */
if (list_empty(&(cifsInode->openFileList))) {
/* changed on server - flush read ahead pages */
}
}
/* mutex_unlock(&direntry->d_inode->i_mutex); */
-
+
kfree(full_path);
FreeXid(xid);
return rc;
pgoff_t index = from >> PAGE_CACHE_SHIFT;
unsigned offset = from & (PAGE_CACHE_SIZE - 1);
struct page *page;
- char *kaddr;
int rc = 0;
page = grab_cache_page(mapping, index);
if (!page)
return -ENOMEM;
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user_segment(page, offset, PAGE_CACHE_SIZE);
unlock_page(page);
page_cache_release(page);
return rc;
}
-int cifs_vmtruncate(struct inode * inode, loff_t offset)
+static int cifs_vmtruncate(struct inode *inode, loff_t offset)
{
struct address_space *mapping = inode->i_mapping;
unsigned long limit;
+ spin_lock(&inode->i_lock);
if (inode->i_size < offset)
goto do_expand;
/*
* truncation of in-use swapfiles is disallowed - it would cause
* subsequent swapout to scribble on the now-freed blocks.
*/
- if (IS_SWAPFILE(inode))
+ if (IS_SWAPFILE(inode)) {
+ spin_unlock(&inode->i_lock);
goto out_busy;
- spin_lock(&inode->i_lock);
+ }
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
+ /*
+ * unmap_mapping_range is called twice, first simply for efficiency
+ * so that truncate_inode_pages does fewer single-page unmaps. However
+ * after this first call, and before truncate_inode_pages finishes,
+ * it is possible for private pages to be COWed, which remain after
+ * truncate_inode_pages finishes, hence the second unmap_mapping_range
+ * call must be made for correctness.
+ */
unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
truncate_inode_pages(mapping, offset);
+ unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
goto out_truncate;
do_expand:
limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
- if (limit != RLIM_INFINITY && offset > limit)
+ if (limit != RLIM_INFINITY && offset > limit) {
+ spin_unlock(&inode->i_lock);
goto out_sig;
- if (offset > inode->i_sb->s_maxbytes)
+ }
+ if (offset > inode->i_sb->s_maxbytes) {
+ spin_unlock(&inode->i_lock);
goto out_big;
+ }
i_size_write(inode, offset);
-
+ spin_unlock(&inode->i_lock);
out_truncate:
- if (inode->i_op && inode->i_op->truncate)
+ if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
out_sig:
return -ETXTBSY;
}
-int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
+static int
+cifs_set_file_size(struct inode *inode, struct iattr *attrs,
+ int xid, char *full_path)
+{
+ int rc;
+ struct cifsFileInfo *open_file;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+
+ /*
+ * To avoid spurious oplock breaks from server, in the case of
+ * inodes that we already have open, avoid doing path based
+ * setting of file size if we can do it by handle.
+ * This keeps our caching token (oplock) and avoids timeouts
+ * when the local oplock break takes longer to flush
+ * writebehind data than the SMB timeout for the SetPathInfo
+ * request would allow
+ */
+ open_file = find_writable_file(cifsInode);
+ if (open_file) {
+ __u16 nfid = open_file->netfid;
+ __u32 npid = open_file->pid;
+ rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
+ npid, false);
+ atomic_dec(&open_file->wrtPending);
+ cFYI(1, ("SetFSize for attrs rc = %d", rc));
+ if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+ unsigned int bytes_written;
+ rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size,
+ &bytes_written, NULL, NULL, 1);
+ cFYI(1, ("Wrt seteof rc %d", rc));
+ }
+ } else
+ rc = -EINVAL;
+
+ if (rc != 0) {
+ /* Set file size by pathname rather than by handle
+ either because no valid, writeable file handle for
+ it was found or because there was an error setting
+ it by handle */
+ rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size,
+ false, cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
+ if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+ __u16 netfid;
+ int oplock = 0;
+
+ rc = SMBLegacyOpen(xid, pTcon, full_path,
+ FILE_OPEN, GENERIC_WRITE,
+ CREATE_NOT_DIR, &netfid, &oplock, NULL,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc == 0) {
+ unsigned int bytes_written;
+ rc = CIFSSMBWrite(xid, pTcon, netfid, 0,
+ attrs->ia_size,
+ &bytes_written, NULL,
+ NULL, 1);
+ cFYI(1, ("wrt seteof rc %d", rc));
+ CIFSSMBClose(xid, pTcon, netfid);
+ }
+ }
+ }
+
+ if (rc == 0) {
+ rc = cifs_vmtruncate(inode, attrs->ia_size);
+ cifs_truncate_page(inode->i_mapping, inode->i_size);
+ }
+
+ return rc;
+}
+
+static int
+cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
{
+ int rc;
int xid;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
+ char *full_path = NULL;
+ struct inode *inode = direntry->d_inode;
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifs_unix_set_info_args *args = NULL;
+
+ cFYI(1, ("setattr_unix on file %s attrs->ia_valid=0x%x",
+ direntry->d_name.name, attrs->ia_valid));
+
+ xid = GetXid();
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
+ /* check if we have permission to change attrs */
+ rc = inode_change_ok(inode, attrs);
+ if (rc < 0)
+ goto out;
+ else
+ rc = 0;
+ }
+
+ full_path = build_path_from_dentry(direntry);
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
+ /*
+ Flush data before changing file size or changing the last
+ write time of the file on the server. If the
+ flush returns error, store it to report later and continue.
+ BB: This should be smarter. Why bother flushing pages that
+ will be truncated anyway? Also, should we error out here if
+ the flush returns error?
+ */
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (rc != 0) {
+ cifsInode->write_behind_rc = rc;
+ rc = 0;
+ }
+ }
+
+ if (attrs->ia_valid & ATTR_SIZE) {
+ rc = cifs_set_file_size(inode, attrs, xid, full_path);
+ if (rc != 0)
+ goto out;
+ }
+
+ /* skip mode change if it's just for clearing setuid/setgid */
+ if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
+ attrs->ia_valid &= ~ATTR_MODE;
+
+ args = kmalloc(sizeof(*args), GFP_KERNEL);
+ if (args == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* set up the struct */
+ if (attrs->ia_valid & ATTR_MODE)
+ args->mode = attrs->ia_mode;
+ else
+ args->mode = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_UID)
+ args->uid = attrs->ia_uid;
+ else
+ args->uid = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_GID)
+ args->gid = attrs->ia_gid;
+ else
+ args->gid = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_ATIME)
+ args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
+ else
+ args->atime = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_MTIME)
+ args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
+ else
+ args->mtime = NO_CHANGE_64;
+
+ if (attrs->ia_valid & ATTR_CTIME)
+ args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
+ else
+ args->ctime = NO_CHANGE_64;
+
+ args->device = 0;
+ rc = CIFSSMBUnixSetInfo(xid, pTcon, full_path, args,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (!rc)
+ rc = inode_setattr(inode, attrs);
+out:
+ kfree(args);
+ kfree(full_path);
+ FreeXid(xid);
+ return rc;
+}
+
+static int
+cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
+{
+ int xid;
+ struct inode *inode = direntry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsInodeInfo *cifsInode = CIFS_I(inode);
char *full_path = NULL;
int rc = -EACCES;
- struct cifsFileInfo *open_file = NULL;
- FILE_BASIC_INFO time_buf;
- int set_time = FALSE;
- __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
- __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
- __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
- struct cifsInodeInfo *cifsInode;
+ __u32 dosattr = 0;
+ __u64 mode = NO_CHANGE_64;
xid = GetXid();
cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
direntry->d_name.name, attrs->ia_valid));
- cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
- pTcon = cifs_sb->tcon;
-
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
/* check if we have permission to change attrs */
- rc = inode_change_ok(direntry->d_inode, attrs);
- if(rc < 0) {
+ rc = inode_change_ok(inode, attrs);
+ if (rc < 0) {
FreeXid(xid);
return rc;
} else
rc = 0;
}
-
+
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
}
- cifsInode = CIFS_I(direntry->d_inode);
-
- /* BB check if we need to refresh inode from server now ? BB */
-
- /* need to flush data before changing file size on server */
- filemap_write_and_wait(direntry->d_inode->i_mapping);
-
- if (attrs->ia_valid & ATTR_SIZE) {
- /* To avoid spurious oplock breaks from server, in the case of
- inodes that we already have open, avoid doing path based
- setting of file size if we can do it by handle.
- This keeps our caching token (oplock) and avoids timeouts
- when the local oplock break takes longer to flush
- writebehind data than the SMB timeout for the SetPathInfo
- request would allow */
-
- open_file = find_writable_file(cifsInode);
- if (open_file) {
- __u16 nfid = open_file->netfid;
- __u32 npid = open_file->pid;
- rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
- nfid, npid, FALSE);
- atomic_dec(&open_file->wrtPending);
- cFYI(1,("SetFSize for attrs rc = %d", rc));
- if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
- int bytes_written;
- rc = CIFSSMBWrite(xid, pTcon,
- nfid, 0, attrs->ia_size,
- &bytes_written, NULL, NULL,
- 1 /* 45 seconds */);
- cFYI(1,("Wrt seteof rc %d", rc));
- }
- } else
- rc = -EINVAL;
+ if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
+ /*
+ Flush data before changing file size or changing the last
+ write time of the file on the server. If the
+ flush returns error, store it to report later and continue.
+ BB: This should be smarter. Why bother flushing pages that
+ will be truncated anyway? Also, should we error out here if
+ the flush returns error?
+ */
+ rc = filemap_write_and_wait(inode->i_mapping);
if (rc != 0) {
- /* Set file size by pathname rather than by handle
- either because no valid, writeable file handle for
- it was found or because there was an error setting
- it by handle */
- rc = CIFSSMBSetEOF(xid, pTcon, full_path,
- attrs->ia_size, FALSE,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
- if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
- __u16 netfid;
- int oplock = FALSE;
-
- rc = SMBLegacyOpen(xid, pTcon, full_path,
- FILE_OPEN,
- SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
- CREATE_NOT_DIR, &netfid, &oplock,
- NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- int bytes_written;
- rc = CIFSSMBWrite(xid, pTcon,
- netfid, 0,
- attrs->ia_size,
- &bytes_written, NULL,
- NULL, 1 /* 45 sec */);
- cFYI(1,("wrt seteof rc %d",rc));
- CIFSSMBClose(xid, pTcon, netfid);
- }
-
- }
+ cifsInode->write_behind_rc = rc;
+ rc = 0;
}
+ }
- /* Server is ok setting allocation size implicitly - no need
- to call:
- CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
- cifs_sb->local_nls);
- */
-
- if (rc == 0) {
- rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
- cifs_truncate_page(direntry->d_inode->i_mapping,
- direntry->d_inode->i_size);
- } else
+ if (attrs->ia_valid & ATTR_SIZE) {
+ rc = cifs_set_file_size(inode, attrs, xid, full_path);
+ if (rc != 0)
goto cifs_setattr_exit;
}
- if (attrs->ia_valid & ATTR_UID) {
- cFYI(1, ("UID changed to %d", attrs->ia_uid));
- uid = attrs->ia_uid;
- }
- if (attrs->ia_valid & ATTR_GID) {
- cFYI(1, ("GID changed to %d", attrs->ia_gid));
- gid = attrs->ia_gid;
- }
- time_buf.Attributes = 0;
+ /*
+ * Without unix extensions we can't send ownership changes to the
+ * server, so silently ignore them. This is consistent with how
+ * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With
+ * CIFSACL support + proper Windows to Unix idmapping, we may be
+ * able to support this in the future.
+ */
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
+ attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
+
+ /* skip mode change if it's just for clearing setuid/setgid */
+ if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
+ attrs->ia_valid &= ~ATTR_MODE;
+
if (attrs->ia_valid & ATTR_MODE) {
- cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
+ cFYI(1, ("Mode changed to 0%o", attrs->ia_mode));
mode = attrs->ia_mode;
}
- if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
- && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
- rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
- 0 /* dev_t */, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- else if (attrs->ia_valid & ATTR_MODE) {
+ if (attrs->ia_valid & ATTR_MODE) {
rc = 0;
- if ((mode & S_IWUGO) == 0) /* not writeable */ {
- if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0)
- time_buf.Attributes =
- cpu_to_le32(cifsInode->cifsAttrs |
- ATTR_READONLY);
- } else if ((mode & S_IWUGO) == S_IWUGO) {
- if (cifsInode->cifsAttrs & ATTR_READONLY)
- time_buf.Attributes =
- cpu_to_le32(cifsInode->cifsAttrs &
- (~ATTR_READONLY));
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
+ rc = mode_to_acl(inode, full_path, mode);
+ else
+#endif
+ if (((mode & S_IWUGO) == 0) &&
+ (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
+
+ dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
+
+ /* fix up mode if we're not using dynperm */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
+ attrs->ia_mode = inode->i_mode & ~S_IWUGO;
+ } else if ((mode & S_IWUGO) &&
+ (cifsInode->cifsAttrs & ATTR_READONLY)) {
+
+ dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
+ /* Attributes of 0 are ignored */
+ if (dosattr == 0)
+ dosattr |= ATTR_NORMAL;
+
+ /* reset local inode permissions to normal */
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
+ attrs->ia_mode &= ~(S_IALLUGO);
+ if (S_ISDIR(inode->i_mode))
+ attrs->ia_mode |=
+ cifs_sb->mnt_dir_mode;
+ else
+ attrs->ia_mode |=
+ cifs_sb->mnt_file_mode;
+ }
+ } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
+ /* ignore mode change - ATTR_READONLY hasn't changed */
+ attrs->ia_valid &= ~ATTR_MODE;
}
- /* BB to be implemented -
- via Windows security descriptors or streams */
- /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
- cifs_sb->local_nls); */
}
- if (attrs->ia_valid & ATTR_ATIME) {
- set_time = TRUE;
- time_buf.LastAccessTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
- } else
- time_buf.LastAccessTime = 0;
-
- if (attrs->ia_valid & ATTR_MTIME) {
- set_time = TRUE;
- time_buf.LastWriteTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
- } else
- time_buf.LastWriteTime = 0;
- /* Do not set ctime explicitly unless other time
- stamps are changed explicitly (i.e. by utime()
- since we would then have a mix of client and
- server times */
-
- if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
- set_time = TRUE;
- /* Although Samba throws this field away
- it may be useful to Windows - but we do
- not want to set ctime unless some other
- timestamp is changing */
- cFYI(1, ("CIFS - CTIME changed"));
- time_buf.ChangeTime =
- cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
- } else
- time_buf.ChangeTime = 0;
-
- if (set_time || time_buf.Attributes) {
- time_buf.CreationTime = 0; /* do not change */
- /* In the future we should experiment - try setting timestamps
- via Handle (SetFileInfo) instead of by path */
- if (!(pTcon->ses->flags & CIFS_SES_NT4))
- rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- else
- rc = -EOPNOTSUPP;
-
- if (rc == -EOPNOTSUPP) {
- int oplock = FALSE;
- __u16 netfid;
-
- cFYI(1, ("calling SetFileInfo since SetPathInfo for "
- "times not supported by this server"));
- /* BB we could scan to see if we already have it open
- and pass in pid of opener to function */
- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
- SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
- CREATE_NOT_DIR, &netfid, &oplock,
- NULL, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc==0) {
- rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
- netfid);
- CIFSSMBClose(xid, pTcon, netfid);
- } else {
- /* BB For even older servers we could convert time_buf
- into old DOS style which uses two second
- granularity */
+ if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
+ ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
+ rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
+ /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
- /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
- &time_buf, cifs_sb->local_nls); */
- }
- }
/* Even if error on time set, no sense failing the call if
the server would set the time to a reasonable value anyway,
and this check ensures that we are not being called from
sys_utimes in which case we ought to fail the call back to
the user when the server rejects the call */
- if((rc) && (attrs->ia_valid &
- (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
+ if ((rc) && (attrs->ia_valid &
+ (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
rc = 0;
}
/* do not need local check to inode_check_ok since the server does
that */
if (!rc)
- rc = inode_setattr(direntry->d_inode, attrs);
+ rc = inode_setattr(inode, attrs);
cifs_setattr_exit:
kfree(full_path);
FreeXid(xid);
return rc;
}
+int
+cifs_setattr(struct dentry *direntry, struct iattr *attrs)
+{
+ struct inode *inode = direntry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *pTcon = cifs_sb->tcon;
+
+ if (pTcon->unix_ext)
+ return cifs_setattr_unix(direntry, attrs);
+
+ return cifs_setattr_nounix(direntry, attrs);
+
+ /* BB: add cifs_setattr_legacy for really old servers */
+}
+
+#if 0
void cifs_delete_inode(struct inode *inode)
{
cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
/* may have to add back in if and when safe distributed caching of
directories added e.g. via FindNotify */
}
+#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff