static void
nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap)
{
- /*
- * NFSv2 does not differentiate between "set-[ac]time-to-now"
- * which only requires access, and "set-[ac]time-to-X" which
- * requires ownership.
- * So if it looks like it might be "set both to the same time which
- * is close to now", and if inode_change_ok fails, then we
- * convert to "set to now" instead of "set to explicit time"
- *
- * We only call inode_change_ok as the last test as technically
- * it is not an interface that we should be using.
- */
-#define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
-#define MAX_TOUCH_TIME_ERROR (30*60)
- if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
- iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
- /*
- * Looks probable.
- *
- * Now just make sure time is in the right ballpark.
- * Solaris, at least, doesn't seem to care what the time
- * request is. We require it be within 30 minutes of now.
- */
- time_t delta = iap->ia_atime.tv_sec - get_seconds();
- if (delta < 0)
- delta = -delta;
- if (delta < MAX_TOUCH_TIME_ERROR &&
- inode_change_ok(inode, iap) != 0) {
- /*
- * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
- * This will cause notify_change to set these times
- * to "now"
- */
- iap->ia_valid &= ~BOTH_TIME_SET;
- }
- }
-
/* sanitize the mode change */
if (iap->ia_valid & ATTR_MODE) {
iap->ia_mode &= S_IALLUGO;
struct file *file, loff_t offset, loff_t len,
int flags)
{
- __be32 err;
int error;
if (!S_ISREG(file_inode(file)->i_mode))
return nfserr_inval;
- err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, NFSD_MAY_WRITE);
- if (err)
- return err;
-
error = vfs_fallocate(file, flags, offset, len);
if (!error)
error = commit_metadata(fhp);
host_err = ima_file_check(file, may_flags, 0);
if (host_err) {
- nfsd_close(file);
+ fput(file);
goto out_nfserr;
}
return err;
}
-/*
- * Close a file.
- */
-void
-nfsd_close(struct file *filp)
-{
- fput(filp);
-}
-
-/*
- * Obtain the readahead parameters for the file
- * specified by (dev, ino).
- */
-
-static inline struct raparms *
-nfsd_get_raparms(dev_t dev, ino_t ino)
+struct raparms *
+nfsd_init_raparms(struct file *file)
{
+ struct inode *inode = file_inode(file);
+ dev_t dev = inode->i_sb->s_dev;
+ ino_t ino = inode->i_ino;
struct raparms *ra, **rap, **frap = NULL;
int depth = 0;
unsigned int hash;
ra->p_count++;
nfsdstats.ra_depth[depth*10/nfsdstats.ra_size]++;
spin_unlock(&rab->pb_lock);
+
+ if (ra->p_set)
+ file->f_ra = ra->p_ra;
return ra;
}
+void nfsd_put_raparams(struct file *file, struct raparms *ra)
+{
+ struct raparm_hbucket *rab = &raparm_hash[ra->p_hindex];
+
+ spin_lock(&rab->pb_lock);
+ ra->p_ra = file->f_ra;
+ ra->p_set = 1;
+ ra->p_count--;
+ spin_unlock(&rab->pb_lock);
+}
+
/*
* Grab and keep cached pages associated with a file in the svc_rqst
* so that they can be passed to the network sendmsg/sendpage routines
return err;
}
-static __be32
+__be32
nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen,
unsigned long *cnt, int *stablep)
return err;
}
-__be32 nfsd_get_tmp_read_open(struct svc_rqst *rqstp, struct svc_fh *fhp,
- struct file **file, struct raparms **ra)
-{
- struct inode *inode;
- __be32 err;
-
- err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, file);
- if (err)
- return err;
-
- inode = file_inode(*file);
-
- /* Get readahead parameters */
- *ra = nfsd_get_raparms(inode->i_sb->s_dev, inode->i_ino);
-
- if (*ra && (*ra)->p_set)
- (*file)->f_ra = (*ra)->p_ra;
- return nfs_ok;
-}
-
-void nfsd_put_tmp_read_open(struct file *file, struct raparms *ra)
-{
- /* Write back readahead params */
- if (ra) {
- struct raparm_hbucket *rab = &raparm_hash[ra->p_hindex];
- spin_lock(&rab->pb_lock);
- ra->p_ra = file->f_ra;
- ra->p_set = 1;
- ra->p_count--;
- spin_unlock(&rab->pb_lock);
- }
- nfsd_close(file);
-}
-
/*
* Read data from a file. count must contain the requested read count
* on entry. On return, *count contains the number of bytes actually read.
struct raparms *ra;
__be32 err;
- err = nfsd_get_tmp_read_open(rqstp, fhp, &file, &ra);
+ err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
if (err)
return err;
+ ra = nfsd_init_raparms(file);
err = nfsd_vfs_read(rqstp, file, offset, vec, vlen, count);
-
- nfsd_put_tmp_read_open(file, ra);
+ if (ra)
+ nfsd_put_raparams(file, ra);
+ fput(file);
return err;
}
if (cnt)
err = nfsd_vfs_write(rqstp, fhp, file, offset, vec, vlen,
cnt, stablep);
- nfsd_close(file);
+ fput(file);
}
out:
return err;
err = nfserr_notsupp;
}
- nfsd_close(file);
+ fput(file);
out:
return err;
}
#ifdef CONFIG_NFSD_V3
-static inline int nfsd_create_is_exclusive(int createmode)
-{
- return createmode == NFS3_CREATE_EXCLUSIVE
- || createmode == NFS4_CREATE_EXCLUSIVE4_1;
-}
-
/*
* NFSv3 and NFSv4 version of nfsd_create
*/
/* cannot use fh_lock as we need deadlock protective ordering
* so do it by hand */
trap = lock_rename(tdentry, fdentry);
- ffhp->fh_locked = tfhp->fh_locked = 1;
+ ffhp->fh_locked = tfhp->fh_locked = true;
fill_pre_wcc(ffhp);
fill_pre_wcc(tfhp);
fill_post_wcc(ffhp);
fill_post_wcc(tfhp);
unlock_rename(tdentry, fdentry);
- ffhp->fh_locked = tfhp->fh_locked = 0;
+ ffhp->fh_locked = tfhp->fh_locked = false;
fh_drop_write(ffhp);
out:
if (err == nfserr_eof || err == nfserr_toosmall)
err = nfs_ok; /* can still be found in ->err */
out_close:
- nfsd_close(file);
+ fput(file);
out:
return err;
}
Code Review / kvmfornfv.git / blobdiff