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Merge pull request #235 from nedbass/rdev

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Don't store rdev in SA for FIFOs and sockets
This commit is contained in:
Brian Behlendorf 2011-05-09 16:41:28 -07:00
commit c91d229809
2 changed files with 16 additions and 7 deletions
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16
module/zfs/zfs_znode.c
View File

@ -278,7 +278,7 @@ zfs_inode_destroy(struct inode *ip)
static void static void
zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip) zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip)
{ {
uint64_t rdev; uint64_t rdev = 0;
switch (ip->i_mode & S_IFMT) { switch (ip->i_mode & S_IFMT) {
case S_IFREG: case S_IFREG:
@ -297,12 +297,16 @@ zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip)
ip->i_op = &zpl_symlink_inode_operations; ip->i_op = &zpl_symlink_inode_operations;
break; break;
/*
* rdev is only stored in a SA only for device files.
*/
case S_IFCHR: case S_IFCHR:
case S_IFBLK: case S_IFBLK:
case S_IFIFO:
case S_IFSOCK:
VERIFY(sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zsb), VERIFY(sa_lookup(ITOZ(ip)->z_sa_hdl, SA_ZPL_RDEV(zsb),
&rdev, sizeof (rdev)) == 0); &rdev, sizeof (rdev)) == 0);
/*FALLTHROUGH*/
case S_IFIFO:
case S_IFSOCK:
init_special_inode(ip, ip->i_mode, rdev); init_special_inode(ip, ip->i_mode, rdev);
ip->i_op = &zpl_special_inode_operations; ip->i_op = &zpl_special_inode_operations;
break; break;
@ -556,8 +560,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr,
size = links = 0; size = links = 0;
} }
if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode) || if (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))
S_ISFIFO(vap->va_mode) || S_ISSOCK(vap->va_mode))
rdev = vap->va_rdev; rdev = vap->va_rdev;
parent = dzp->z_id; parent = dzp->z_id;
@ -648,8 +651,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr,
&empty_xattr, 8); &empty_xattr, 8);
} }
if (obj_type == DMU_OT_ZNODE || if (obj_type == DMU_OT_ZNODE ||
(S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode) || (S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))) {
S_ISFIFO(vap->va_mode) || S_ISSOCK(vap->va_mode))) {
SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zsb), SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_RDEV(zsb),
NULL, &rdev, 8); NULL, &rdev, 8);
} }

7
module/zfs/zpl_inode.c
View File

@ -85,6 +85,13 @@ zpl_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
vattr_t *vap; vattr_t *vap;
int error; int error;
/*
* We currently expect Linux to supply rdev=0 for all sockets
* and fifos, but we want to know if this behavior ever changes.
*/
if (S_ISSOCK(mode) || S_ISFIFO(mode))
ASSERT(rdev == 0);
crhold(cr); crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP); vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = mode; vap->va_mode = mode;