LOCK_MAY_READ(9) The Linux VFS LOCK_MAY_READ(9)NAME
lock_may_read - checks that the region is free of locks
SYNOPSIS
int lock_may_read(struct inode * inode, loff_t start, unsigned long len);
ARGUMENTS
inode
the inode that is being read
start
the first byte to read
len
the number of bytes to read
DESCRIPTION
Emulates Windows locking requirements. Whole-file mandatory locks (share modes) can prohibit a read and byte-range POSIX locks can prohibit
a read if they overlap.
N.B. this function is only ever called from knfsd and ownership of locks is never checked.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 LOCK_MAY_READ(9)
Check Out this Related Man Page
CLRI(8) BSD System Manager's Manual CLRI(8)NAME
clri -- clear an inode
SYNOPSIS
clri special_device inode_number ...
DESCRIPTION
Clri is obsoleted for normal file system repair work by fsck(8).
Clri zeros out the inodes with the specified inode number(s) on the filesystem residing on the given special_device. The fsck(8) utility is
usually run after clri to reclaim the zero'ed inode(s) and the blocks previously claimed by those inode(s). Both read and write permission
are required on the specified special_device.
The primary purpose of this routine is to remove a file which for some reason is not being properly handled by fsck(8). Once removed, it is
anticipated that fsck(8) will be able to clean up the resulting mess.
SEE ALSO fsck(8), fsdb(8), icheck(8), ncheck(8)BUGS
If the file is open, the work of clri will be lost when the inode is written back to disk from the inode cache.
4th Berkeley Distribution April 19, 1994 4th Berkeley Distribution
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