diff options
Diffstat (limited to 'module/spl/spl-kobj.c')
-rw-r--r-- | module/spl/spl-kobj.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/module/spl/spl-kobj.c b/module/spl/spl-kobj.c new file mode 100644 index 000000000..7019369bd --- /dev/null +++ b/module/spl/spl-kobj.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. + * Copyright (C) 2007 The Regents of the University of California. + * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). + * Written by Brian Behlendorf <[email protected]>. + * UCRL-CODE-235197 + * + * This file is part of the SPL, Solaris Porting Layer. + * For details, see <http://zfsonlinux.org/>. + * + * The SPL is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * The SPL is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with the SPL. If not, see <http://www.gnu.org/licenses/>. + * + * Solaris Porting Layer (SPL) Kobj Implementation. + */ + +#include <sys/kobj.h> + +struct _buf * +kobj_open_file(const char *name) +{ + struct _buf *file; + vnode_t *vp; + int rc; + + file = kmalloc(sizeof (_buf_t), kmem_flags_convert(KM_SLEEP)); + if (file == NULL) + return ((_buf_t *)-1UL); + + if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) { + kfree(file); + return ((_buf_t *)-1UL); + } + + file->vp = vp; + + return (file); +} /* kobj_open_file() */ +EXPORT_SYMBOL(kobj_open_file); + +void +kobj_close_file(struct _buf *file) +{ + VOP_CLOSE(file->vp, 0, 0, 0, 0, 0); + kfree(file); +} /* kobj_close_file() */ +EXPORT_SYMBOL(kobj_close_file); + +int +kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) +{ + ssize_t resid; + + if (vn_rdwr(UIO_READ, file->vp, buf, size, (offset_t)off, + UIO_SYSSPACE, 0, 0, 0, &resid) != 0) + return (-1); + + return (size - resid); +} /* kobj_read_file() */ +EXPORT_SYMBOL(kobj_read_file); + +int +kobj_get_filesize(struct _buf *file, uint64_t *size) +{ + vattr_t vap; + int rc; + + rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL); + if (rc) + return (rc); + + *size = vap.va_size; + + return (rc); +} /* kobj_get_filesize() */ +EXPORT_SYMBOL(kobj_get_filesize); |