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-rw-r--r--fs/cifs/readdir.c134
1 files changed, 70 insertions, 64 deletions
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 5f40ed3473f..9f51f9bf029 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -640,6 +640,70 @@ static int is_dir_changed(struct file *file)
}
+static int cifs_save_resume_key(const char *current_entry,
+ struct cifsFileInfo *cifsFile)
+{
+ int rc = 0;
+ unsigned int len = 0;
+ __u16 level;
+ char *filename;
+
+ if ((cifsFile == NULL) || (current_entry == NULL))
+ return -EINVAL;
+
+ level = cifsFile->srch_inf.info_level;
+
+ if (level == SMB_FIND_FILE_UNIX) {
+ FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
+
+ filename = &pFindData->FileName[0];
+ if (cifsFile->srch_inf.unicode) {
+ len = cifs_unicode_bytelen(filename);
+ } else {
+ /* BB should we make this strnlen of PATH_MAX? */
+ len = strnlen(filename, PATH_MAX);
+ }
+ cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
+ } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
+ FILE_DIRECTORY_INFO *pFindData =
+ (FILE_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
+ FILE_FULL_DIRECTORY_INFO *pFindData =
+ (FILE_FULL_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
+ SEARCH_ID_FULL_DIR_INFO *pFindData =
+ (SEARCH_ID_FULL_DIR_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
+ FILE_BOTH_DIRECTORY_INFO *pFindData =
+ (FILE_BOTH_DIRECTORY_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ len = le32_to_cpu(pFindData->FileNameLength);
+ cifsFile->srch_inf.resume_key = pFindData->FileIndex;
+ } else if (level == SMB_FIND_FILE_INFO_STANDARD) {
+ FIND_FILE_STANDARD_INFO *pFindData =
+ (FIND_FILE_STANDARD_INFO *)current_entry;
+ filename = &pFindData->FileName[0];
+ /* one byte length, no name conversion */
+ len = (unsigned int)pFindData->FileNameLength;
+ cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
+ } else {
+ cFYI(1, ("Unknown findfirst level %d", level));
+ return -EINVAL;
+ }
+ cifsFile->srch_inf.resume_name_len = len;
+ cifsFile->srch_inf.presume_name = filename;
+ return rc;
+}
+
/* find the corresponding entry in the search */
/* Note that the SMB server returns search entries for . and .. which
complicates logic here if we choose to parse for them and we do not
@@ -677,11 +741,14 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
(index_to_find < first_entry_in_buffer)) {
/* close and restart search */
cFYI(1, ("search backing up - close and restart search"));
+ write_lock(&GlobalSMBSeslock);
if (!cifsFile->srch_inf.endOfSearch &&
!cifsFile->invalidHandle) {
cifsFile->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
if (cifsFile->srch_inf.ntwrk_buf_start) {
cFYI(1, ("freeing SMB ff cache buf on search rewind"));
if (cifsFile->srch_inf.smallBuf)
@@ -698,6 +765,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
rc));
return rc;
}
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
}
while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
@@ -705,6 +773,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
cFYI(1, ("calling findnext2"));
rc = CIFSFindNext(xid, pTcon, cifsFile->netfid,
&cifsFile->srch_inf);
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
if (rc)
return -ENOENT;
}
@@ -919,69 +988,6 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
return rc;
}
-static int cifs_save_resume_key(const char *current_entry,
- struct cifsFileInfo *cifsFile)
-{
- int rc = 0;
- unsigned int len = 0;
- __u16 level;
- char *filename;
-
- if ((cifsFile == NULL) || (current_entry == NULL))
- return -EINVAL;
-
- level = cifsFile->srch_inf.info_level;
-
- if (level == SMB_FIND_FILE_UNIX) {
- FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
-
- filename = &pFindData->FileName[0];
- if (cifsFile->srch_inf.unicode) {
- len = cifs_unicode_bytelen(filename);
- } else {
- /* BB should we make this strnlen of PATH_MAX? */
- len = strnlen(filename, PATH_MAX);
- }
- cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
- } else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
- FILE_DIRECTORY_INFO *pFindData =
- (FILE_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
- FILE_FULL_DIRECTORY_INFO *pFindData =
- (FILE_FULL_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
- SEARCH_ID_FULL_DIR_INFO *pFindData =
- (SEARCH_ID_FULL_DIR_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
- FILE_BOTH_DIRECTORY_INFO *pFindData =
- (FILE_BOTH_DIRECTORY_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- len = le32_to_cpu(pFindData->FileNameLength);
- cifsFile->srch_inf.resume_key = pFindData->FileIndex;
- } else if (level == SMB_FIND_FILE_INFO_STANDARD) {
- FIND_FILE_STANDARD_INFO *pFindData =
- (FIND_FILE_STANDARD_INFO *)current_entry;
- filename = &pFindData->FileName[0];
- /* one byte length, no name conversion */
- len = (unsigned int)pFindData->FileNameLength;
- cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
- } else {
- cFYI(1, ("Unknown findfirst level %d", level));
- return -EINVAL;
- }
- cifsFile->srch_inf.resume_name_len = len;
- cifsFile->srch_inf.presume_name = filename;
- return rc;
-}
int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-13 06:58:47 +0000