- Oct 28, 2010
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Aneesh Kumar K.V authored
We need to do O_LARGEFILE check even in case of 9p. Use the generic_file_open helper Signed-off-by:
Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by:
Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by:
Eric Van Hensbergen <ericvh@gmail.com>
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Aneesh Kumar K.V authored
Make sure we drop inode reference in the error path Signed-off-by:
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Aneesh Kumar K.V authored
A create without LOOKUP_OPEN flag set is due to mknod of regular files. Use mknod 9P operation for the same Signed-off-by:
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M. Mohan Kumar authored
Synopsis size[4] TReadlink tag[2] fid[4] size[4] RReadlink tag[2] target[s] Description Readlink is used to return the contents of the symoblic link referred by fid. Contents of symboic link is returned as a response. target[s] - Contents of the symbolic link referred by fid. Signed-off-by:M. Mohan Kumar <mohan@in.ibm.com> Reviewed-by:
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M. Mohan Kumar authored
Use V9FS_MAGIC as the file system type while filling kernel statfs strucutre instead of using host file system magic number. Also move the definition of V9FS_MAGIC from v9fs.h to standard magic.h file. Signed-off-by:
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M. Mohan Kumar authored
Synopsis size[4] TGetlock tag[2] fid[4] getlock[n] size[4] RGetlock tag[2] getlock[n] Description TGetlock is used to test for the existence of byte range posix locks on a file identified by given fid. The reply contains getlock structure. If the lock could be placed it returns F_UNLCK in type field of getlock structure. Otherwise it returns the details of the conflicting locks in the getlock structure getlock structure: type[1] - Type of lock: F_RDLCK, F_WRLCK start[8] - Starting offset for lock length[8] - Number of bytes to check for the lock If length is 0, check for lock in all bytes starting at the location 'start' through to the end of file pid[4] - PID of the process that wants to take lock/owns the task in case of reply client[4] - Client id of the system that owns the process which has the conflicting lock Signed-off-by: -
M. Mohan Kumar authored
Synopsis size[4] TLock tag[2] fid[4] flock[n] size[4] RLock tag[2] status[1] Description Tlock is used to acquire/release byte range posix locks on a file identified by given fid. The reply contains status of the lock request flock structure: type[1] - Type of lock: F_RDLCK, F_WRLCK, F_UNLCK flags[4] - Flags could be either of P9_LOCK_FLAGS_BLOCK - Blocked lock request, if there is a conflicting lock exists, wait for that lock to be released. P9_LOCK_FLAGS_RECLAIM - Reclaim lock request, used when client is trying to reclaim a lock after a server restrart (due to crash) start[8] - Starting offset for lock length[8] - Number of bytes to lock If length is 0, lock all bytes starting at the location 'start' through to the end of file pid[4] - PID of the process that wants to take lock client_id[4] - Unique client id status[1] - Status of the lock request, can be P9_LOCK_SUCCESS(0), P9_LOCK_BLOCKED(1), P9_LOCK_ERROR(2) or P9_LOCK_GRACE(3) P9_LOCK_SUCCESS - Request was successful P9_LOCK_BLOCKED - A conflicting lock is held by another process P9_LOCK_ERROR - Error while processing the lock request P9_LOCK_GRACE - Server is in grace period, it can't accept new lock requests in this period (except locks with P9_LOCK_FLAGS_RECLAIM flag set) Signed-off-by: -
Venkateswararao Jujjuri (JV) authored
SYNOPSIS size[4] Tfsync tag[2] fid[4] size[4] Rfsync tag[2] DESCRIPTION The Tfsync transaction transfers ("flushes") all modified in-core data of file identified by fid to the disk device (or other permanent storage device) where that file resides. Signed-off-by: -
Venkateswararao Jujjuri (JV) authored
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Aneesh Kumar K.V authored
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Aneesh Kumar K.V authored
Inherit default ACL on create Signed-off-by:
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Aneesh Kumar K.V authored
We need update the acl value on chmod Signed-off-by:
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Aneesh Kumar K.V authored
This patch also update mode bits, as a normal file system. I am not sure wether we should do that, considering that a setxattr on the server will again update the ACL/mode value Signed-off-by:
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Aneesh Kumar K.V authored
This patch implement fetching POSIX ACL from the server Signed-off-by:
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Aneesh Kumar K.V authored
The ACL value is fetched as a part of inode initialization from the server and the permission checking function use the cached value of the ACL Signed-off-by:
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jvrao authored
the same calculation is done in p9_client_write Signed-off-by:
Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by:
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jvrao authored
The presence of v9fs_direct_IO() in the address space ops vector allowes open() O_DIRECT flags which would have failed otherwise. In the non-cached mode, we shunt off direct read and write requests before the VFS gets them, so this method should never be called. Direct IO is not 'yet' supported in the cached mode. Hence when this routine is called through generic_file_aio_read(), the read/write fails with an error. Signed-off-by:
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Harsh Prateek Bora authored
The current implementation of 9p client mkdir function does not set the S_ISGID mode bit for the directory being created if the parent directory has this bit set. This patch fixes this problem so that the newly created directory inherits the gid from parent directory and not from the process creating this directory, when the S_ISGID bit is set in parent directory. Signed-off-by:
Harsh Prateek Bora <harsh@linux.vnet.ibm.com> Signed-off-by:
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Sripathi Kodi authored
A patch was accepted recently for sending correct buffer size to p9stat_read. We need a similar patch in v9fs_dir_readdir_dotl to send correct end of buffer to p9dirent_read. Signed-off-by:
Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by:
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Harsh Prateek Bora authored
Current 9p client file write code does not check for RLIMIT_FSIZE resource. This bug was found by running LTP test case for setrlimit. This bug is fixed by calling generic_write_checks before sending the write request to the server. Without this patch: the write function is allowed to write above the RLIMIT_FSIZE set by user. With this patch: the write function checks for RLIMIT_SIZE and writes upto the size limit. Signed-off-by:
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Dan Carpenter authored
git_t is unsigned an can never be less than zero. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
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- Oct 26, 2010
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Al Viro authored
Clones an existing reference to inode; caller must already hold one. Signed-off-by:Al Viro <viro@zeniv.linux.org.uk>
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- Sep 13, 2010
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Aneesh Kumar K.V authored
We should not use dotlversion for the dotu inode operations Signed-off-by:
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Aneesh Kumar K.V authored
We should use the cached dentry operation only if caching mode is enabled Signed-off-by:
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jvrao authored
NULL fid should be handled in cases where we endup calling v9fs_dir_release() before even we instantiate the fid in filp. Signed-off-by:
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Aneesh Kumar K.V authored
This was introduced by 7cadb63d58a932041afa3f957d5cbb6ce69dcee5 Signed-off-by:
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Latchesar Ionkov authored
Four memory leak fixes in the 9P code. Signed-off-by:
Latchesar Ionkov <lucho@ionkov.net> Signed-off-by:
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- Aug 30, 2010
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Dan Carpenter authored
p9_client_walk() can return error values if we run out of space or there is a problem with the network. Signed-off-by:
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- Aug 11, 2010
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Stephen Rothwell authored
Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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- Aug 09, 2010
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Al Viro authored
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Christoph Hellwig authored
Replace inode_setattr with opencoded variants of it in all callers. This moves the remaining call to vmtruncate into the filesystem methods where it can be replaced with the proper truncate sequence. In a few cases it was obvious that we would never end up calling vmtruncate so it was left out in the opencoded variant: spufs: explicitly checks for ATTR_SIZE earlier btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above In addition to that ncpfs called inode_setattr with handcrafted iattrs, which allowed to trim down the opencoded variant. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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- Aug 04, 2010
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Latchesar Ionkov authored
Pass the correct end of the buffer to p9stat_read. Signed-off-by:
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- Aug 02, 2010
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Eric Van Hensbergen authored
fixes: CHECK fs/9p/xattr.c fs/9p/xattr.c:73:6: warning: Using plain integer as NULL pointer fs/9p/xattr.c:135:6: warning: Using plain integer as NULL pointer Signed-off-by: -
Eric Van Hensbergen authored
make v9fs_dentry_from_dir_inode static Signed-off-by: -
Aneesh Kumar K.V authored
During fid lookup we need to make sure that the dentry->d_parent doesn't change so that we can safely walk the parent dentries. To ensure that we need to prevent cross directory rename during fid_lookup. Add a per superblock rename_sem rw_semaphore to prevent parallel fid lookup and rename. Signed-off-by:
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Aneesh Kumar K.V authored
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M. Mohan Kumar authored
Implement 9p2000.L version of open(LOPEN) interface in 9p client. For LOPEN, no need to convert the flags to and from 9p mode to VFS mode. Synopsis: size[4] Tlopen tag[2] fid[4] mode[4] size[4] Rlopen tag[2] qid[13] iounit[4] [Fix mode bit format - jvrao@linux.vnet.ibm.com] Signed-off-by: -
Venkateswararao Jujjuri (JV) authored
SYNOPSIS size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4] size[4] Rlcreate tag[2] qid[13] iounit[4] DESCRIPTION The Tlreate request asks the file server to create a new regular file with the name supplied, in the directory (dir) represented by fid. The mode argument specifies the permissions to use. New file is created with the uid if the fid and with supplied gid. The flags argument represent Linux access mode flags with which the caller is requesting to open the file with. Protocol allows all the Linux access modes but it is upto the server to allow/disallow any of these acess modes. If the server doesn't support any of the access mode, it is expected to return error. Signed-off-by: -
M. Mohan Kumar authored
Implement TMKDIR as part of 2000.L Work Synopsis size[4] Tmkdir tag[2] fid[4] name[s] mode[4] gid[4] size[4] Rmkdir tag[2] qid[13] Description mkdir asks the file server to create a directory with given name, mode and gid. The qid for the new directory is returned with the mkdir reply message. Note: 72 is selected as the opcode for TMKDIR from the reserved list. Signed-off-by: -
M. Mohan Kumar authored
Synopsis size[4] Tmknod tag[2] fid[4] name[s] mode[4] major[4] minor[4] gid[4] size[4] Rmknod tag[2] qid[13] Description mknod asks the file server to create a device node with given major and minor number, mode and gid. The qid for the new device node is returned with the mknod reply message. [sripathik@in.ibm.com: Fix error handling code] Signed-off-by:
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