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Implement the new 1003.1-2001 pathconf() keys, including the Advisory

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Information option.  Other filesystem implementations should do something
similar.

With advice from:	mckusick, phk
This commit is contained in:
Garrett Wollman 2002-10-27 18:09:49 +00:00
parent c7047e5204
commit 1d1971ac38
1 changed files with 47 additions and 11 deletions
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58
sys/ufs/ufs/ufs_vnops.c
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@ -2171,26 +2171,28 @@ ufs_pathconf(ap)
int *a_retval;
} */ *ap;
{
int error;
error = 0;
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
return (0);
break;
case _PC_NAME_MAX:
*ap->a_retval = NAME_MAX;
return (0);
break;
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
return (0);
break;
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return (0);
break;
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
break;
case _PC_NO_TRUNC:
*ap->a_retval = 1;
return (0);
break;
case _PC_ACL_EXTENDED:
#ifdef UFS_ACL
if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS)
@ -2200,7 +2202,7 @@ ufs_pathconf(ap)
#else
*ap->a_retval = 0;
#endif
return (0);
break;
case _PC_ACL_PATH_MAX:
#ifdef UFS_ACL
if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS)
@ -2210,7 +2212,7 @@ ufs_pathconf(ap)
#else
*ap->a_retval = 3;
#endif
return (0);
break;
case _PC_MAC_PRESENT:
#ifdef MAC
if (ap->a_vp->v_mount->mnt_flag & MNT_MULTILABEL)
@ -2220,11 +2222,45 @@ ufs_pathconf(ap)
#else
*ap->a_retval = 0;
#endif
return (0);
break;
case _PC_ASYNC_IO:
/* _PC_ASYNC_IO should have been handled by upper layers. */
KASSERT(0, ("_PC_ASYNC_IO should not get here"));
error = EINVAL;
break;
case _PC_PRIO_IO:
*ap->a_retval = 0;
break;
case _PC_SYNC_IO:
*ap->a_retval = 0;
break;
case _PC_ALLOC_SIZE_MIN:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
break;
case _PC_FILESIZEBITS:
*ap->a_retval = 64;
break;
case _PC_REC_INCR_XFER_SIZE:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
break;
case _PC_REC_MAX_XFER_SIZE:
*ap->a_retval = -1; /* means ``unlimited'' */
break;
case _PC_REC_MIN_XFER_SIZE:
*ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
break;
case _PC_REC_XFER_ALIGN:
*ap->a_retval = PAGE_SIZE;
break;
case _PC_SYMLINK_MAX:
*ap->a_retval = MAXPATHLEN;
break;
default:
return (EINVAL);
error = EINVAL;
break;
}
/* NOTREACHED */
return (error);
}
/*