From: Jeremy Allison Date: Thu, 23 Jun 2005 00:26:35 +0000 (-0700) Subject: [CIFS] POSIX extensions, SetFSInfo added X-Git-Tag: v2.6.15-rc1~18^2~35^2~5^2~72^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac67055ef2378ea95c34b593ddf9d0a0737a240a;p=pandora-kernel.git [CIFS] POSIX extensions, SetFSInfo added Signed-off-by: Steve French@sfrench@us.ibm.com Signed-off-by: Jeremy Allison (jra@samba.org) --- diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index ec00d61d5308..5dc5fe6b486d 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -24,6 +24,7 @@ #define CIFS_MOUNT_DIRECT_IO 8 /* do not write nor read through page cache */ #define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */ #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */ +#define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible. */ struct cifs_sb_info { struct cifsTconInfo *tcon; /* primary mount */ diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 4ed9c13fff55..d3773e57acf9 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -309,6 +309,13 @@ CIFS_SB(struct super_block *sb) return sb->s_fs_info; } +static inline const char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb) +{ + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) + return '/'; + else + return '\\'; +} /* one of these for every pending CIFS request to the server */ struct mid_q_entry { diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h index aede6a813167..84d37f8e986e 100644 --- a/fs/cifs/cifspdu.h +++ b/fs/cifs/cifspdu.h @@ -59,6 +59,7 @@ #define TRANS2_FIND_FIRST 0x01 #define TRANS2_FIND_NEXT 0x02 #define TRANS2_QUERY_FS_INFORMATION 0x03 +#define TRANS2_SET_FS_INFORMATION 0x04 #define TRANS2_QUERY_PATH_INFORMATION 0x05 #define TRANS2_SET_PATH_INFORMATION 0x06 #define TRANS2_QUERY_FILE_INFORMATION 0x07 @@ -1411,6 +1412,43 @@ typedef struct smb_com_transaction_qfsi_rsp { __u8 Pad; /* may be three bytes *//* followed by data area */ } TRANSACTION2_QFSI_RSP; + +/* SETFSInfo Levels */ +#define SMB_SET_CIFS_UNIX_INFO 0x200 +typedef struct smb_com_transaction2_setfsi_req { + struct smb_hdr hdr; /* wct = 15 */ + __le16 TotalParameterCount; + __le16 TotalDataCount; + __le16 MaxParameterCount; + __le16 MaxDataCount; + __u8 MaxSetupCount; + __u8 Reserved; + __le16 Flags; + __le32 Timeout; + __u16 Reserved2; + __le16 ParameterCount; /* 4 */ + __le16 ParameterOffset; + __le16 DataCount; /* 12 */ + __le16 DataOffset; + __u8 SetupCount; /* one */ + __u8 Reserved3; + __le16 SubCommand; /* TRANS2_SET_FS_INFORMATION */ + __le16 ByteCount; + __u8 Pad; + __u16 FileNum; /* Parameters start. */ + __le16 InformationLevel;/* Parameters end. */ + __le16 ClientUnixMajor; /* Data start. */ + __le16 ClientUnixMinor; + __le64 ClientUnixCap; /* Data end */ +} TRANSACTION2_SETFSI_REQ; + +typedef struct smb_com_transaction2_setfsi_rsp { + struct smb_hdr hdr; /* wct = 10 */ + struct trans2_resp t2; + __u16 ByteCount; +} TRANSACTION2_SETFSI_RSP; + + typedef struct smb_com_transaction2_get_dfs_refer_req { struct smb_hdr hdr; /* wct = 15 */ __le16 TotalParameterCount; @@ -1551,12 +1589,20 @@ typedef struct { __le16 MinorVersionNumber; __le64 Capability; } FILE_SYSTEM_UNIX_INFO; /* Unix extensions info, level 0x200 */ + +/* Version numbers for CIFS UNIX major and minor. */ +#define CIFS_UNIX_MAJOR_VERSION 1 +#define CIFS_UNIX_MINOR_VERSION 0 + /* Linux/Unix extensions capability flags */ #define CIFS_UNIX_FCNTL_CAP 0x00000001 /* support for fcntl locks */ #define CIFS_UNIX_POSIX_ACL_CAP 0x00000002 /* support getfacl/setfacl */ #define CIFS_UNIX_XATTR_CAP 0x00000004 /* support new namespace */ #define CIFS_UNIX_EXTATTR_CAP 0x00000008 /* support chattr/chflag */ +#define CIFS_UNIX_POSIX_PATHNAMES_CAP 0x00000010 /* Use POSIX pathnames on the wire. */ + #define CIFS_POSIX_EXTENSIONS 0x00000010 /* support for new QFSInfo */ + typedef struct { /* For undefined recommended transfer size return -1 in that field */ __le32 OptimalTransferSize; /* bsize on some os, iosize on other os */ diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index ea239dea571e..db2adf0b206c 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -40,7 +40,7 @@ extern unsigned int _GetXid(void); extern void _FreeXid(unsigned int); #define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__FUNCTION__, xid,current->fsuid)); #define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__FUNCTION__,curr_xid,(int)rc));} -extern char *build_path_from_dentry(struct dentry *); +extern char *build_path_from_dentry(struct dentry *, const struct cifs_sb_info *cifs_sb); extern char *build_wildcard_path_from_dentry(struct dentry *direntry); extern void renew_parental_timestamps(struct dentry *direntry); extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *, @@ -89,7 +89,7 @@ extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, const char *searchName, const struct nls_table *nls_codepage, - __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map); + __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map, const char dirsep); extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, __u16 searchHandle, struct cifs_search_info * psrch_inf); @@ -125,6 +125,9 @@ extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, int remap); extern int CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData); +extern int CIFSSMBSETFSUnixInfo(const int xid, struct cifsTconInfo *tcon, + __u64 cap); + extern int CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon); extern int CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon); diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index b31158a2643d..81c9d3f393f5 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -2416,7 +2416,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, const char *searchName, const struct nls_table *nls_codepage, __u16 * pnetfid, - struct cifs_search_info * psrch_inf, int remap) + struct cifs_search_info * psrch_inf, int remap, const char dirsep) { /* level 257 SMB_ */ TRANSACTION2_FFIRST_REQ *pSMB = NULL; @@ -2443,7 +2443,7 @@ findFirstRetry: it got remapped to 0xF03A as if it were part of the directory name instead of a wildcard */ name_len *= 2; - pSMB->FileName[name_len] = '\\'; + pSMB->FileName[name_len] = dirsep; pSMB->FileName[name_len+1] = 0; pSMB->FileName[name_len+2] = '*'; pSMB->FileName[name_len+3] = 0; @@ -2457,7 +2457,7 @@ findFirstRetry: if(name_len > buffersize-header) free buffer exit; BB */ strncpy(pSMB->FileName, searchName, name_len); - pSMB->FileName[name_len] = '\\'; + pSMB->FileName[name_len] = dirsep; pSMB->FileName[name_len+1] = '*'; pSMB->FileName[name_len+2] = 0; name_len += 3; @@ -3265,6 +3265,77 @@ QFSUnixRetry: return rc; } +int +CIFSSMBSETFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) +{ +/* level 0x200 SMB_SET_CIFS_UNIX_INFO */ + TRANSACTION2_SETFSI_REQ *pSMB = NULL; + TRANSACTION2_SETFSI_RSP *pSMBr = NULL; + int rc = 0; + int bytes_returned = 0; + __u16 params, param_offset, offset, byte_count; + + cFYI(1, ("In SETFSUnixInfo")); +SETFSUnixRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + params = 4; /* 2 bytes zero followed by info level. */ + pSMB->MaxSetupCount = 0; + pSMB->Reserved = 0; + pSMB->Flags = 0; + pSMB->Timeout = 0; + pSMB->Reserved2 = 0; + param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4; + offset = param_offset + params; + + pSMB->MaxParameterCount = cpu_to_le16(4); + pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ + pSMB->SetupCount = 1; + pSMB->Reserved3 = 0; + pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); + byte_count = 1 /* pad */ + params + 12; + + pSMB->DataCount = cpu_to_le16(12); + pSMB->ParameterCount = cpu_to_le16(params); + pSMB->TotalDataCount = pSMB->DataCount; + pSMB->TotalParameterCount = pSMB->ParameterCount; + pSMB->ParameterOffset = cpu_to_le16(param_offset); + pSMB->DataOffset = cpu_to_le16(offset); + + /* Params. */ + pSMB->FileNum = 0; + pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); + + /* Data. */ + pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); + pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); + pSMB->ClientUnixCap = cpu_to_le64(cap); + + pSMB->hdr.smb_buf_length += byte_count; + pSMB->ByteCount = cpu_to_le16(byte_count); + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); + } else { /* decode response */ + rc = validate_t2((struct smb_t2_rsp *)pSMBr); + if (rc) { + rc = -EIO; /* bad smb */ + } + } + cifs_buf_release(pSMB); + + if (rc == -EAGAIN) + goto SETFSUnixRetry; + + return rc; +} + + int CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index e568cc47a7f9..bef5d6f30975 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -74,6 +74,7 @@ struct smb_vol { unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ unsigned direct_io:1; unsigned remap:1; /* set to remap seven reserved chars in filenames */ + unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ unsigned int rsize; unsigned int wsize; unsigned int sockopt; @@ -745,6 +746,9 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ vol->rw = TRUE; + /* default is always to request posix paths. */ + vol->posix_paths = 1; + if (!options) return 1; @@ -1023,6 +1027,10 @@ cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) vol->remap = 1; } else if (strnicmp(data, "nomapchars", 10) == 0) { vol->remap = 0; + } else if (strnicmp(data, "posixpaths", 10) == 0) { + vol->posix_paths = 1; + } else if (strnicmp(data, "noposixpaths", 12) == 0) { + vol->posix_paths = 0; } else if (strnicmp(data, "setuids", 7) == 0) { vol->setuids = 1; } else if (strnicmp(data, "nosetuids", 9) == 0) { @@ -1679,6 +1687,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; if(volume_info.no_xattr) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; + if(volume_info.direct_io) { cERROR(1,("mounting share using direct i/o")); cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; @@ -1781,6 +1790,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, cFYI(1,("server negotiated posix acl support")); sb->s_flags |= MS_POSIXACL; } + + /* Try and negotiate POSIX pathnames if we can. */ + if (volume_info.posix_paths && (CIFS_UNIX_POSIX_PATHNAMES_CAP & + le64_to_cpu(tcon->fsUnixInfo.Capability))) { + if (!CIFSSMBSETFSUnixInfo(xid, tcon, CIFS_UNIX_POSIX_PATHNAMES_CAP, 0)) { + cFYI(1,("negotiated posix pathnames support")); + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS; + } else { + cFYI(1,("posix pathnames support requested but not supported")); + } + } } } } diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 3f3538d4a1fa..9360d8fb9ef7 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -43,7 +43,7 @@ renew_parental_timestamps(struct dentry *direntry) /* Note: caller must free return buffer */ char * -build_path_from_dentry(struct dentry *direntry) +build_path_from_dentry(struct dentry *direntry, const struct cifs_sb_info *cifs_sb) { struct dentry *temp; int namelen = 0; @@ -74,7 +74,7 @@ cifs_bp_rename_retry: if (namelen < 0) { break; } else { - full_path[namelen] = '\\'; + full_path[namelen] = CIFS_DIR_SEP(cifs_sb); strncpy(full_path + namelen + 1, temp->d_name.name, temp->d_name.len); cFYI(0, (" name: %s ", full_path + namelen)); @@ -138,7 +138,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode, pTcon = cifs_sb->tcon; down(&direntry->d_sb->s_vfs_rename_sem); - full_path = build_path_from_dentry(direntry); + full_path = build_path_from_dentry(direntry, cifs_sb); up(&direntry->d_sb->s_vfs_rename_sem); if(full_path == NULL) { FreeXid(xid); @@ -299,7 +299,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev pTcon = cifs_sb->tcon; down(&direntry->d_sb->s_vfs_rename_sem); - full_path = build_path_from_dentry(direntry); + full_path = build_path_from_dentry(direntry, cifs_sb); up(&direntry->d_sb->s_vfs_rename_sem); if(full_path == NULL) rc = -ENOMEM; @@ -360,7 +360,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name /* can not grab the rename sem here since it would deadlock in the cases (beginning of sys_rename itself) in which we already have the sb rename sem */ - full_path = build_path_from_dentry(direntry); + full_path = build_path_from_dentry(direntry, cifs_sb); if(full_path == NULL) { FreeXid(xid); return ERR_PTR(-ENOMEM); diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c index 7d2a9202c39a..d47ce7f49dc3 100644 --- a/fs/cifs/fcntl.c +++ b/fs/cifs/fcntl.c @@ -83,7 +83,7 @@ int cifs_dir_notify(struct file * file, unsigned long arg) pTcon = cifs_sb->tcon; down(&file->f_dentry->d_sb->s_vfs_rename_sem); - full_path = build_path_from_dentry(file->f_dentry); + full_path = build_path_from_dentry(file->f_dentry, cifs_sb); up(&file->f_dentry->d_sb->s_vfs_rename_sem); if(full_path == NULL) { Reading git-diff-tree failed