diff options
Diffstat (limited to 'fs/cifs/readdir.c')
-rw-r--r-- | fs/cifs/readdir.c | 128 |
1 files changed, 65 insertions, 63 deletions
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index 5f40ed3473f5..765adf12d54f 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c | |||
@@ -640,6 +640,70 @@ static int is_dir_changed(struct file *file) | |||
640 | 640 | ||
641 | } | 641 | } |
642 | 642 | ||
643 | static int cifs_save_resume_key(const char *current_entry, | ||
644 | struct cifsFileInfo *cifsFile) | ||
645 | { | ||
646 | int rc = 0; | ||
647 | unsigned int len = 0; | ||
648 | __u16 level; | ||
649 | char *filename; | ||
650 | |||
651 | if ((cifsFile == NULL) || (current_entry == NULL)) | ||
652 | return -EINVAL; | ||
653 | |||
654 | level = cifsFile->srch_inf.info_level; | ||
655 | |||
656 | if (level == SMB_FIND_FILE_UNIX) { | ||
657 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; | ||
658 | |||
659 | filename = &pFindData->FileName[0]; | ||
660 | if (cifsFile->srch_inf.unicode) { | ||
661 | len = cifs_unicode_bytelen(filename); | ||
662 | } else { | ||
663 | /* BB should we make this strnlen of PATH_MAX? */ | ||
664 | len = strnlen(filename, PATH_MAX); | ||
665 | } | ||
666 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | ||
667 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { | ||
668 | FILE_DIRECTORY_INFO *pFindData = | ||
669 | (FILE_DIRECTORY_INFO *)current_entry; | ||
670 | filename = &pFindData->FileName[0]; | ||
671 | len = le32_to_cpu(pFindData->FileNameLength); | ||
672 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
673 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { | ||
674 | FILE_FULL_DIRECTORY_INFO *pFindData = | ||
675 | (FILE_FULL_DIRECTORY_INFO *)current_entry; | ||
676 | filename = &pFindData->FileName[0]; | ||
677 | len = le32_to_cpu(pFindData->FileNameLength); | ||
678 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
679 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { | ||
680 | SEARCH_ID_FULL_DIR_INFO *pFindData = | ||
681 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; | ||
682 | filename = &pFindData->FileName[0]; | ||
683 | len = le32_to_cpu(pFindData->FileNameLength); | ||
684 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
685 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { | ||
686 | FILE_BOTH_DIRECTORY_INFO *pFindData = | ||
687 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; | ||
688 | filename = &pFindData->FileName[0]; | ||
689 | len = le32_to_cpu(pFindData->FileNameLength); | ||
690 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
691 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { | ||
692 | FIND_FILE_STANDARD_INFO *pFindData = | ||
693 | (FIND_FILE_STANDARD_INFO *)current_entry; | ||
694 | filename = &pFindData->FileName[0]; | ||
695 | /* one byte length, no name conversion */ | ||
696 | len = (unsigned int)pFindData->FileNameLength; | ||
697 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | ||
698 | } else { | ||
699 | cFYI(1, ("Unknown findfirst level %d", level)); | ||
700 | return -EINVAL; | ||
701 | } | ||
702 | cifsFile->srch_inf.resume_name_len = len; | ||
703 | cifsFile->srch_inf.presume_name = filename; | ||
704 | return rc; | ||
705 | } | ||
706 | |||
643 | /* find the corresponding entry in the search */ | 707 | /* find the corresponding entry in the search */ |
644 | /* Note that the SMB server returns search entries for . and .. which | 708 | /* Note that the SMB server returns search entries for . and .. which |
645 | complicates logic here if we choose to parse for them and we do not | 709 | complicates logic here if we choose to parse for them and we do not |
@@ -703,6 +767,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon, | |||
703 | while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) && | 767 | while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) && |
704 | (rc == 0) && !cifsFile->srch_inf.endOfSearch) { | 768 | (rc == 0) && !cifsFile->srch_inf.endOfSearch) { |
705 | cFYI(1, ("calling findnext2")); | 769 | cFYI(1, ("calling findnext2")); |
770 | cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile); | ||
706 | rc = CIFSFindNext(xid, pTcon, cifsFile->netfid, | 771 | rc = CIFSFindNext(xid, pTcon, cifsFile->netfid, |
707 | &cifsFile->srch_inf); | 772 | &cifsFile->srch_inf); |
708 | if (rc) | 773 | if (rc) |
@@ -919,69 +984,6 @@ static int cifs_filldir(char *pfindEntry, struct file *file, | |||
919 | return rc; | 984 | return rc; |
920 | } | 985 | } |
921 | 986 | ||
922 | static int cifs_save_resume_key(const char *current_entry, | ||
923 | struct cifsFileInfo *cifsFile) | ||
924 | { | ||
925 | int rc = 0; | ||
926 | unsigned int len = 0; | ||
927 | __u16 level; | ||
928 | char *filename; | ||
929 | |||
930 | if ((cifsFile == NULL) || (current_entry == NULL)) | ||
931 | return -EINVAL; | ||
932 | |||
933 | level = cifsFile->srch_inf.info_level; | ||
934 | |||
935 | if (level == SMB_FIND_FILE_UNIX) { | ||
936 | FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry; | ||
937 | |||
938 | filename = &pFindData->FileName[0]; | ||
939 | if (cifsFile->srch_inf.unicode) { | ||
940 | len = cifs_unicode_bytelen(filename); | ||
941 | } else { | ||
942 | /* BB should we make this strnlen of PATH_MAX? */ | ||
943 | len = strnlen(filename, PATH_MAX); | ||
944 | } | ||
945 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | ||
946 | } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) { | ||
947 | FILE_DIRECTORY_INFO *pFindData = | ||
948 | (FILE_DIRECTORY_INFO *)current_entry; | ||
949 | filename = &pFindData->FileName[0]; | ||
950 | len = le32_to_cpu(pFindData->FileNameLength); | ||
951 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
952 | } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) { | ||
953 | FILE_FULL_DIRECTORY_INFO *pFindData = | ||
954 | (FILE_FULL_DIRECTORY_INFO *)current_entry; | ||
955 | filename = &pFindData->FileName[0]; | ||
956 | len = le32_to_cpu(pFindData->FileNameLength); | ||
957 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
958 | } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) { | ||
959 | SEARCH_ID_FULL_DIR_INFO *pFindData = | ||
960 | (SEARCH_ID_FULL_DIR_INFO *)current_entry; | ||
961 | filename = &pFindData->FileName[0]; | ||
962 | len = le32_to_cpu(pFindData->FileNameLength); | ||
963 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
964 | } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) { | ||
965 | FILE_BOTH_DIRECTORY_INFO *pFindData = | ||
966 | (FILE_BOTH_DIRECTORY_INFO *)current_entry; | ||
967 | filename = &pFindData->FileName[0]; | ||
968 | len = le32_to_cpu(pFindData->FileNameLength); | ||
969 | cifsFile->srch_inf.resume_key = pFindData->FileIndex; | ||
970 | } else if (level == SMB_FIND_FILE_INFO_STANDARD) { | ||
971 | FIND_FILE_STANDARD_INFO *pFindData = | ||
972 | (FIND_FILE_STANDARD_INFO *)current_entry; | ||
973 | filename = &pFindData->FileName[0]; | ||
974 | /* one byte length, no name conversion */ | ||
975 | len = (unsigned int)pFindData->FileNameLength; | ||
976 | cifsFile->srch_inf.resume_key = pFindData->ResumeKey; | ||
977 | } else { | ||
978 | cFYI(1, ("Unknown findfirst level %d", level)); | ||
979 | return -EINVAL; | ||
980 | } | ||
981 | cifsFile->srch_inf.resume_name_len = len; | ||
982 | cifsFile->srch_inf.presume_name = filename; | ||
983 | return rc; | ||
984 | } | ||
985 | 987 | ||
986 | int cifs_readdir(struct file *file, void *direntry, filldir_t filldir) | 988 | int cifs_readdir(struct file *file, void *direntry, filldir_t filldir) |
987 | { | 989 | { |