a0595d0249
locking flags when acquiring a vnode. The immediate purpose is to allow polling lock requests (LK_NOWAIT) needed by soft updates to avoid deadlock when enlisting other processes to help with the background cleanup. For the future it will allow the use of shared locks for read access to vnodes. This change touches a lot of files as it affects most filesystems within the system. It has been well tested on FFS, loopback, and CD-ROM filesystems. only lightly on the others, so if you find a problem there, please let me (mckusick@mckusick.com) know.
358 lines
13 KiB
C
358 lines
13 KiB
C
/*-
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* Copyright (c) 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley
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* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
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* Support code is derived from software contributed to Berkeley
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* by Atsushi Murai (amurai@spec.co.jp).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)iso.h 8.6 (Berkeley) 5/10/95
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* $FreeBSD$
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*/
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#define ISODCL(from, to) (to - from + 1)
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struct iso_volume_descriptor {
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char type[ISODCL(1,1)]; /* 711 */
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char id[ISODCL(2,6)];
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char version[ISODCL(7,7)];
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char unused[ISODCL(8,8)];
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char type_sierra[ISODCL(9,9)]; /* 711 */
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char id_sierra[ISODCL(10,14)];
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char version_sierra[ISODCL(15,15)];
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char data[ISODCL(16,2048)];
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};
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/* volume descriptor types */
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#define ISO_VD_PRIMARY 1
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#define ISO_VD_SUPPLEMENTARY 2
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#define ISO_VD_END 255
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#define ISO_STANDARD_ID "CD001"
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#define ISO_ECMA_ID "CDW01"
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#define ISO_SIERRA_ID "CDROM"
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struct iso_primary_descriptor {
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char type [ISODCL ( 1, 1)]; /* 711 */
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char id [ISODCL ( 2, 6)];
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char version [ISODCL ( 7, 7)]; /* 711 */
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char unused1 [ISODCL ( 8, 8)];
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char system_id [ISODCL ( 9, 40)]; /* achars */
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char volume_id [ISODCL ( 41, 72)]; /* dchars */
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char unused2 [ISODCL ( 73, 80)];
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char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
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char unused3 [ISODCL ( 89, 120)];
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char volume_set_size [ISODCL (121, 124)]; /* 723 */
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char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
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char logical_block_size [ISODCL (129, 132)]; /* 723 */
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char path_table_size [ISODCL (133, 140)]; /* 733 */
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char type_l_path_table [ISODCL (141, 144)]; /* 731 */
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char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
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char type_m_path_table [ISODCL (149, 152)]; /* 732 */
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char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
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char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
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char volume_set_id [ISODCL (191, 318)]; /* dchars */
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char publisher_id [ISODCL (319, 446)]; /* achars */
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char preparer_id [ISODCL (447, 574)]; /* achars */
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char application_id [ISODCL (575, 702)]; /* achars */
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char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
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char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
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char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
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char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
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char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
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char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
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char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
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char file_structure_version [ISODCL (882, 882)]; /* 711 */
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char unused4 [ISODCL (883, 883)];
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char application_data [ISODCL (884, 1395)];
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char unused5 [ISODCL (1396, 2048)];
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};
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#define ISO_DEFAULT_BLOCK_SIZE 2048
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/*
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* Used by Microsoft Joliet extension to ISO9660. Almost the same
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* as PVD, but byte position 8 is a flag, and 89-120 is for escape.
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*/
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struct iso_supplementary_descriptor {
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char type [ISODCL ( 1, 1)]; /* 711 */
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char id [ISODCL ( 2, 6)];
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char version [ISODCL ( 7, 7)]; /* 711 */
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char flags [ISODCL ( 8, 8)]; /* 711? */
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char system_id [ISODCL ( 9, 40)]; /* achars */
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char volume_id [ISODCL ( 41, 72)]; /* dchars */
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char unused2 [ISODCL ( 73, 80)];
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char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
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char escape [ISODCL ( 89, 120)];
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char volume_set_size [ISODCL (121, 124)]; /* 723 */
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char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
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char logical_block_size [ISODCL (129, 132)]; /* 723 */
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char path_table_size [ISODCL (133, 140)]; /* 733 */
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char type_l_path_table [ISODCL (141, 144)]; /* 731 */
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char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
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char type_m_path_table [ISODCL (149, 152)]; /* 732 */
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char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
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char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
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char volume_set_id [ISODCL (191, 318)]; /* dchars */
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char publisher_id [ISODCL (319, 446)]; /* achars */
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char preparer_id [ISODCL (447, 574)]; /* achars */
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char application_id [ISODCL (575, 702)]; /* achars */
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char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
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char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
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char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
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char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
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char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
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char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
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char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
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char file_structure_version [ISODCL (882, 882)]; /* 711 */
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char unused4 [ISODCL (883, 883)];
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char application_data [ISODCL (884, 1395)];
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char unused5 [ISODCL (1396, 2048)];
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};
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struct iso_sierra_primary_descriptor {
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char unknown1 [ISODCL ( 1, 8)]; /* 733 */
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char type [ISODCL ( 9, 9)]; /* 711 */
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char id [ISODCL ( 10, 14)];
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char version [ISODCL ( 15, 15)]; /* 711 */
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char unused1 [ISODCL ( 16, 16)];
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char system_id [ISODCL ( 17, 48)]; /* achars */
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char volume_id [ISODCL ( 49, 80)]; /* dchars */
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char unused2 [ISODCL ( 81, 88)];
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char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
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char unused3 [ISODCL ( 97, 128)];
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char volume_set_size [ISODCL (129, 132)]; /* 723 */
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char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
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char logical_block_size [ISODCL (137, 140)]; /* 723 */
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char path_table_size [ISODCL (141, 148)]; /* 733 */
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char type_l_path_table [ISODCL (149, 152)]; /* 731 */
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char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */
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char unknown2 [ISODCL (157, 160)]; /* 731 */
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char unknown3 [ISODCL (161, 164)]; /* 731 */
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char type_m_path_table [ISODCL (165, 168)]; /* 732 */
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char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */
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char unknown4 [ISODCL (173, 176)]; /* 732 */
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char unknown5 [ISODCL (177, 180)]; /* 732 */
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char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
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char volume_set_id [ISODCL (215, 342)]; /* dchars */
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char publisher_id [ISODCL (343, 470)]; /* achars */
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char preparer_id [ISODCL (471, 598)]; /* achars */
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char application_id [ISODCL (599, 726)]; /* achars */
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char copyright_id [ISODCL (727, 790)]; /* achars */
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char creation_date [ISODCL (791, 806)]; /* ? */
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char modification_date [ISODCL (807, 822)]; /* ? */
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char expiration_date [ISODCL (823, 838)]; /* ? */
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char effective_date [ISODCL (839, 854)]; /* ? */
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char file_structure_version [ISODCL (855, 855)]; /* 711 */
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char unused4 [ISODCL (856, 2048)];
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};
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struct iso_directory_record {
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char length [ISODCL (1, 1)]; /* 711 */
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char ext_attr_length [ISODCL (2, 2)]; /* 711 */
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u_char extent [ISODCL (3, 10)]; /* 733 */
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u_char size [ISODCL (11, 18)]; /* 733 */
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char date [ISODCL (19, 25)]; /* 7 by 711 */
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char flags [ISODCL (26, 26)];
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char file_unit_size [ISODCL (27, 27)]; /* 711 */
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char interleave [ISODCL (28, 28)]; /* 711 */
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char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
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char name_len [ISODCL (33, 33)]; /* 711 */
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char name [1]; /* XXX */
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};
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/* can't take sizeof(iso_directory_record), because of possible alignment
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of the last entry (34 instead of 33) */
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#define ISO_DIRECTORY_RECORD_SIZE 33
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struct iso_extended_attributes {
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u_char owner [ISODCL (1, 4)]; /* 723 */
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u_char group [ISODCL (5, 8)]; /* 723 */
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u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
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char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
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char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
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char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
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char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
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char recfmt [ISODCL (79, 79)]; /* 711 */
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char recattr [ISODCL (80, 80)]; /* 711 */
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u_char reclen [ISODCL (81, 84)]; /* 723 */
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char system_id [ISODCL (85, 116)]; /* achars */
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char system_use [ISODCL (117, 180)];
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char version [ISODCL (181, 181)]; /* 711 */
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char len_esc [ISODCL (182, 182)]; /* 711 */
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char reserved [ISODCL (183, 246)];
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u_char len_au [ISODCL (247, 250)]; /* 723 */
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};
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#ifdef _KERNEL
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/* CD-ROM Format type */
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enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
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ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA };
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#ifndef ISOFSMNT_ROOT
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#define ISOFSMNT_ROOT 0
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#endif
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struct iso_mnt {
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int im_flags;
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struct mount *im_mountp;
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dev_t im_dev;
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struct vnode *im_devvp;
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int logical_block_size;
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int im_bshift;
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int im_bmask;
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int volume_space_size;
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char root[ISODCL (157, 190)];
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int root_extent;
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int root_size;
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enum ISO_FTYPE iso_ftype;
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int rr_skip;
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int rr_skip0;
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int joliet_level;
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};
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#define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
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#define blkoff(imp, loc) ((loc) & (imp)->im_bmask)
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#define lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
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#define lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
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#define blksize(imp, ip, lbn) ((imp)->logical_block_size)
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int cd9660_vget_internal __P((struct mount *, ino_t, int, struct vnode **, int,
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struct iso_directory_record *));
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int cd9660_init __P((struct vfsconf *));
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int cd9660_uninit __P((struct vfsconf *));
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#define cd9660_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \
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size_t, struct proc *)))eopnotsupp)
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extern vop_t **cd9660_vnodeop_p;
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extern vop_t **cd9660_specop_p;
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extern vop_t **cd9660_fifoop_p;
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int isochar __P((u_char *, u_char *, int, u_char *));
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int isofncmp __P((u_char *, int, u_char *, int, int));
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void isofntrans __P((u_char *, int, u_char *, u_short *, int, int, int));
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ino_t isodirino __P((struct iso_directory_record *, struct iso_mnt *));
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#endif /* _KERNEL */
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/*
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* The isonum_xxx functions are inlined anyway, and could come handy even
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* outside the kernel. Thus we don't hide them here.
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*/
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static __inline int isonum_711 __P((u_char *));
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static __inline int
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isonum_711(p)
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u_char *p;
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{
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return *p;
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}
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static __inline int isonum_712 __P((char *));
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static __inline int
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isonum_712(p)
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char *p;
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{
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return *p;
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}
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#ifndef UNALIGNED_ACCESS
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static __inline int isonum_723 __P((u_char *));
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static __inline int
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isonum_723(p)
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u_char *p;
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{
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return *p|(p[1] << 8);
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}
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static __inline int isonum_733 __P((u_char *));
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static __inline int
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isonum_733(p)
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u_char *p;
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{
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return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
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}
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#else /* UNALIGNED_ACCESS */
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#if BYTE_ORDER == LITTLE_ENDIAN
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static __inline int
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isonum_723(p)
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u_char *p
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{
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return *(u_int16t *)p;
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}
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static __inline int
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isonum_733(p)
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u_char *p;
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{
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return *(u_int32t *)p;
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}
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#endif
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#if BYTE_ORDER == BIG_ENDIAN
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static __inline int
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isonum_723(p)
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u_char *p
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{
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return *(u_int16t *)(p + 2);
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}
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static __inline int
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isonum_733(p)
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u_char *p;
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{
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return *(u_int32t *)(p + 4);
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}
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#endif
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#endif /* UNALIGNED_ACCESS */
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/*
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* Associated files have a leading '='.
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*/
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#define ASSOCCHAR '='
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