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author | Ronnie Sahlberg <lsahlber@redhat.com> | 2018-12-20 22:03:04 -0600 |
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committer | Steve French <stfrench@microsoft.com> | 2018-12-23 22:38:17 -0600 |
commit | 07d3b2e4264fb32bf82074311abc20c6de224d61 (patch) | |
tree | e7d721976c587fe91e5bb837d6cf7d065361274a /fs/cifs/smb2ops.c | |
parent | 97aa495a89a631822431b789b8553b81e3460255 (diff) | |
download | linux-stable-07d3b2e4264fb32bf82074311abc20c6de224d61.tar.gz linux-stable-07d3b2e4264fb32bf82074311abc20c6de224d61.tar.bz2 linux-stable-07d3b2e4264fb32bf82074311abc20c6de224d61.zip |
cifs: create a helper function for compound query_info
and convert statfs to use it.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r-- | fs/cifs/smb2ops.c | 82 |
1 files changed, 56 insertions, 26 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 6ecf1372a212..daa7115adc5f 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -960,7 +960,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path); if (rc) goto sea_exit; - smb2_set_next_command(ses->server, &rqst[0]); + smb2_set_next_command(ses->server, &rqst[0], 0); /* Set Info */ @@ -987,7 +987,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, COMPOUND_FID, current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, 0, data, size); - smb2_set_next_command(server, &rqst[1]); + smb2_set_next_command(server, &rqst[1], 0); smb2_set_related(&rqst[1]); @@ -1837,25 +1837,28 @@ smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst, shdr->NextCommand = cpu_to_le32(len); } +/* + * Passes the query info response back to the caller on success. + * Caller need to free this with free_rsp_buf(). + */ static int -smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, - struct kstatfs *buf) +smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, + __le16 *utf16_path, u32 desired_access, + u32 class, u32 type, u32 output_len, + struct kvec *rsp, int *buftype) { - struct smb2_query_info_rsp *rsp; - struct smb2_fs_full_size_info *info = NULL; + struct cifs_ses *ses = tcon->ses; + struct TCP_Server_Info *server = ses->server; + int flags = 0; struct smb_rqst rqst[3]; int resp_buftype[3]; struct kvec rsp_iov[3]; struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; struct kvec qi_iov[1]; struct kvec close_iov[1]; - struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = ses->server; - __le16 srch_path = 0; /* Null - open root of share */ u8 oplock = SMB2_OPLOCK_LEVEL_NONE; struct cifs_open_parms oparms; struct cifs_fid fid; - int flags = 0; int rc; if (smb3_encryption_required(tcon)) @@ -1870,15 +1873,15 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; oparms.tcon = tcon; - oparms.desired_access = FILE_READ_ATTRIBUTES; + oparms.desired_access = desired_access; oparms.disposition = FILE_OPEN; oparms.create_options = 0; oparms.fid = &fid; oparms.reconnect = false; - rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path); + rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path); if (rc) - goto qfs_exit; + goto qic_exit; smb2_set_next_command(server, &rqst[0], 0); memset(&qi_iov, 0, sizeof(qi_iov)); @@ -1886,12 +1889,11 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, rqst[1].rq_nvec = 1; rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID, - FS_FULL_SIZE_INFORMATION, - SMB2_O_INFO_FILESYSTEM, 0, - sizeof(struct smb2_fs_full_size_info), 0, + class, type, 0, + output_len, 0, NULL); if (rc) - goto qfs_exit; + goto qic_exit; smb2_set_next_command(server, &rqst[1], 0); smb2_set_related(&rqst[1]); @@ -1901,32 +1903,60 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID); if (rc) - goto qfs_exit; + goto qic_exit; smb2_set_related(&rqst[2]); rc = compound_send_recv(xid, ses, flags, 3, rqst, resp_buftype, rsp_iov); if (rc) + goto qic_exit; + + *rsp = rsp_iov[1]; + *buftype = resp_buftype[1]; + + qic_exit: + SMB2_open_free(&rqst[0]); + SMB2_query_info_free(&rqst[1]); + SMB2_close_free(&rqst[2]); + free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); + free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); + return rc; +} + +static int +smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, + struct kstatfs *buf) +{ + struct smb2_query_info_rsp *rsp; + struct smb2_fs_full_size_info *info = NULL; + __le16 utf16_path = 0; /* Null - open root of share */ + struct kvec rsp_iov = {NULL, 0}; + int buftype = CIFS_NO_BUFFER; + int rc; + + + rc = smb2_query_info_compound(xid, tcon, &utf16_path, + FILE_READ_ATTRIBUTES, + FS_FULL_SIZE_INFORMATION, + SMB2_O_INFO_FILESYSTEM, + sizeof(struct smb2_fs_full_size_info), + &rsp_iov, &buftype); + if (rc) goto qfs_exit; - rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; + rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; buf->f_type = SMB2_MAGIC_NUMBER; info = (struct smb2_fs_full_size_info *)( le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), le32_to_cpu(rsp->OutputBufferLength), - &rsp_iov[1], + &rsp_iov, sizeof(struct smb2_fs_full_size_info)); if (!rc) smb2_copy_fs_info_to_kstatfs(info, buf); qfs_exit: - SMB2_open_free(&rqst[0]); - SMB2_query_info_free(&rqst[1]); - SMB2_close_free(&rqst[2]); - free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); - free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); - free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); + free_rsp_buf(buftype, rsp_iov.iov_base); return rc; } |