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Linux/fs/minix/file.c

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  1 /*
  2  *  linux/fs/minix/file.c
  3  *
  4  *  Copyright (C) 1991, 1992 Linus Torvalds
  5  *
  6  *  minix regular file handling primitives
  7  */
  8 
  9 #include "minix.h"
 10 
 11 /*
 12  * We have mostly NULLs here: the current defaults are OK for
 13  * the minix filesystem.
 14  */
 15 const struct file_operations minix_file_operations = {
 16         .llseek         = generic_file_llseek,
 17         .read_iter      = generic_file_read_iter,
 18         .write_iter     = generic_file_write_iter,
 19         .mmap           = generic_file_mmap,
 20         .fsync          = generic_file_fsync,
 21         .splice_read    = generic_file_splice_read,
 22 };
 23 
 24 static int minix_setattr(struct dentry *dentry, struct iattr *attr)
 25 {
 26         struct inode *inode = d_inode(dentry);
 27         int error;
 28 
 29         error = setattr_prepare(dentry, attr);
 30         if (error)
 31                 return error;
 32 
 33         if ((attr->ia_valid & ATTR_SIZE) &&
 34             attr->ia_size != i_size_read(inode)) {
 35                 error = inode_newsize_ok(inode, attr->ia_size);
 36                 if (error)
 37                         return error;
 38 
 39                 truncate_setsize(inode, attr->ia_size);
 40                 minix_truncate(inode);
 41         }
 42 
 43         setattr_copy(inode, attr);
 44         mark_inode_dirty(inode);
 45         return 0;
 46 }
 47 
 48 const struct inode_operations minix_file_inode_operations = {
 49         .setattr        = minix_setattr,
 50         .getattr        = minix_getattr,
 51 };
 52 

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