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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-01 18:52:45 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-01 18:52:45 (GMT) |
commit | 0f44bc36ba1cddbd34371110c4ef8f0800c8d465 (patch) | |
tree | ce5f664e91af8bc0988830acdacbba5080d9c5f3 /fs/cifs/cifssmb.c | |
parent | efc518eb318c4d776933c23e7b82c2e5402b62de (diff) | |
parent | a9a315d41407cd1079eb815f4adae897cc08b0d2 (diff) | |
download | linux-0f44bc36ba1cddbd34371110c4ef8f0800c8d465.tar.xz |
Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"A set of cifs fixes (mostly for symlinks, and SMB2 xattrs) and
cleanups"
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix check for regular file in couldbe_mf_symlink()
[CIFS] Fix SMB2 mounts so they don't try to set or get xattrs via cifs
CIFS: Cleanup cifs open codepath
CIFS: Remove extra indentation in cifs_sfu_type
CIFS: Cleanup cifs_mknod
CIFS: Cleanup CIFSSMBOpen
cifs: Add support for follow_link on dfs shares under posix extensions
cifs: move unix extension call to cifs_query_symlink()
cifs: Re-order M-F Symlink code
cifs: Add create MFSymlinks to protocol ops struct
cifs: use protocol specific call for query_mf_symlink()
cifs: Rename MF symlink function names
cifs: Rename and cleanup open_query_close_cifs_symlink()
cifs: Fix memory leak in cifs_hardlink()
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r-- | fs/cifs/cifssmb.c | 158 |
1 files changed, 89 insertions, 69 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index d707edb..4d881c3 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1273,104 +1273,124 @@ OldOpenRetry: } int -CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, - const char *fileName, const int openDisposition, - const int access_flags, const int create_options, __u16 *netfid, - int *pOplock, FILE_ALL_INFO *pfile_info, - const struct nls_table *nls_codepage, int remap) +CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, + FILE_ALL_INFO *buf) { int rc = -EACCES; - OPEN_REQ *pSMB = NULL; - OPEN_RSP *pSMBr = NULL; + OPEN_REQ *req = NULL; + OPEN_RSP *rsp = NULL; int bytes_returned; int name_len; __u16 count; + struct cifs_sb_info *cifs_sb = oparms->cifs_sb; + struct cifs_tcon *tcon = oparms->tcon; + int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; + const struct nls_table *nls = cifs_sb->local_nls; + int create_options = oparms->create_options; + int desired_access = oparms->desired_access; + int disposition = oparms->disposition; + const char *path = oparms->path; openRetry: - rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, - (void **) &pSMBr); + rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, + (void **)&rsp); if (rc) return rc; - pSMB->AndXCommand = 0xFF; /* none */ + /* no commands go after this */ + req->AndXCommand = 0xFF; - if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - count = 1; /* account for one byte pad to word boundary */ - name_len = - cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), - fileName, PATH_MAX, nls_codepage, remap); - name_len++; /* trailing null */ + if (req->hdr.Flags2 & SMBFLG2_UNICODE) { + /* account for one byte pad to word boundary */ + count = 1; + name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), + path, PATH_MAX, nls, remap); + /* trailing null */ + name_len++; name_len *= 2; - pSMB->NameLength = cpu_to_le16(name_len); - } else { /* BB improve check for buffer overruns BB */ - count = 0; /* no pad */ - name_len = strnlen(fileName, PATH_MAX); - name_len++; /* trailing null */ - pSMB->NameLength = cpu_to_le16(name_len); - strncpy(pSMB->fileName, fileName, name_len); + req->NameLength = cpu_to_le16(name_len); + } else { + /* BB improve check for buffer overruns BB */ + /* no pad */ + count = 0; + name_len = strnlen(path, PATH_MAX); + /* trailing null */ + name_len++; + req->NameLength = cpu_to_le16(name_len); + strncpy(req->fileName, path, name_len); } - if (*pOplock & REQ_OPLOCK) - pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); - else if (*pOplock & REQ_BATCHOPLOCK) - pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); - pSMB->DesiredAccess = cpu_to_le32(access_flags); - pSMB->AllocationSize = 0; - /* set file as system file if special file such - as fifo and server expecting SFU style and - no Unix extensions */ + + if (*oplock & REQ_OPLOCK) + req->OpenFlags = cpu_to_le32(REQ_OPLOCK); + else if (*oplock & REQ_BATCHOPLOCK) + req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); + + req->DesiredAccess = cpu_to_le32(desired_access); + req->AllocationSize = 0; + + /* + * Set file as system file if special file such as fifo and server + * expecting SFU style and no Unix extensions. + */ if (create_options & CREATE_OPTION_SPECIAL) - pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); + req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); else - pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); + req->FileAttributes = cpu_to_le32(ATTR_NORMAL); - /* XP does not handle ATTR_POSIX_SEMANTICS */ - /* but it helps speed up case sensitive checks for other - servers such as Samba */ + /* + * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case + * sensitive checks for other servers such as Samba. + */ if (tcon->ses->capabilities & CAP_UNIX) - pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); + req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); if (create_options & CREATE_OPTION_READONLY) - pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); + req->FileAttributes |= cpu_to_le32(ATTR_READONLY); + + req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); + req->CreateDisposition = cpu_to_le32(disposition); + req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); - pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); - pSMB->CreateDisposition = cpu_to_le32(openDisposition); - pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); /* BB Expirement with various impersonation levels and verify */ - pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); - pSMB->SecurityFlags = - SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; + req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); + req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; count += name_len; - inc_rfc1001_len(pSMB, count); + inc_rfc1001_len(req, count); - pSMB->ByteCount = cpu_to_le16(count); - /* long_op set to 1 to allow for oplock break timeouts */ - rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, - (struct smb_hdr *)pSMBr, &bytes_returned, 0); + req->ByteCount = cpu_to_le16(count); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, + (struct smb_hdr *)rsp, &bytes_returned, 0); cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); if (rc) { cifs_dbg(FYI, "Error in Open = %d\n", rc); - } else { - *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ - *netfid = pSMBr->Fid; /* cifs fid stays in le */ - /* Let caller know file was created so we can set the mode. */ - /* Do we care about the CreateAction in any other cases? */ - if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) - *pOplock |= CIFS_CREATE_ACTION; - if (pfile_info) { - memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, - 36 /* CreationTime to Attributes */); - /* the file_info buf is endian converted by caller */ - pfile_info->AllocationSize = pSMBr->AllocationSize; - pfile_info->EndOfFile = pSMBr->EndOfFile; - pfile_info->NumberOfLinks = cpu_to_le32(1); - pfile_info->DeletePending = 0; - } + cifs_buf_release(req); + if (rc == -EAGAIN) + goto openRetry; + return rc; } - cifs_buf_release(pSMB); - if (rc == -EAGAIN) - goto openRetry; + /* 1 byte no need to le_to_cpu */ + *oplock = rsp->OplockLevel; + /* cifs fid stays in le */ + oparms->fid->netfid = rsp->Fid; + + /* Let caller know file was created so we can set the mode. */ + /* Do we care about the CreateAction in any other cases? */ + if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) + *oplock |= CIFS_CREATE_ACTION; + + if (buf) { + /* copy from CreationTime to Attributes */ + memcpy((char *)buf, (char *)&rsp->CreationTime, 36); + /* the file_info buf is endian converted by caller */ + buf->AllocationSize = rsp->AllocationSize; + buf->EndOfFile = rsp->EndOfFile; + buf->NumberOfLinks = cpu_to_le32(1); + buf->DeletePending = 0; + } + + cifs_buf_release(req); return rc; } |