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Avoiding to produce NM field for "." and ".." entries if Rock Ridge

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version 1.10 is chosen by iso_write_opts_set_rrip_version_1_10()
This commit is contained in:
Thomas Schmitt 2011-06-01 11:34:45 +02:00
parent 94eecbb123
commit e7d9559d16
1 changed files with 33 additions and 5 deletions
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38
libisofs/rockridge.c
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@ -1,7 +1,7 @@
/* /*
* Copyright (c) 2007 Vreixo Formoso * Copyright (c) 2007 Vreixo Formoso
* Copyright (c) 2007 Mario Danic * Copyright (c) 2007 Mario Danic
* Copyright (c) 2009 Thomas Schmitt * Copyright (c) 2009 - 2011 Thomas Schmitt
* *
* This file is part of the libisofs project; you can redistribute it and/or * This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 * modify it under the terms of the GNU General Public License version 2
@ -1257,7 +1257,8 @@ size_t rrip_calc_len(Ecma119Image *t, Ecma119Node *n, int type, size_t used_up,
/* "." or ".." entry */ /* "." or ".." entry */
su_size += 5; /* NM field */ if (!t->rrip_version_1_10)
su_size += 5; /* NM field */
if (type == 1 && n->parent == NULL) { if (type == 1 && n->parent == NULL) {
/* /*
@ -1713,9 +1714,36 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
/* "." or ".." entry */ /* "." or ".." entry */
/* write the NM entry */ /* write the NM entry */
ret = rrip_add_NM(t, info, NULL, 0, 1 << type, 0); if (t->rrip_version_1_10) {
if (ret < 0) { /* RRIP-1.10:
goto add_susp_cleanup; "NM" System Use Fields recorded for the ISO 9660 directory
records with names (00) and (01), used to designate the
current and parent directories, respectively, should be
ignored. Instead, the receiving system should convert these
names to the appropriate receiving system-dependent
designations for the current and parent directories.
*/
/* mkisofs obviously writes no NM for '.' and '..' .
Program isoinfo shows empty names with records as of RRIP-1.12
*/
/* no op */;
} else {
/* RRIP-1.12:
If the ISO 9660 Directory Record File Identifier is (00), then
the CURRENT bit of the "NM" Flags field [...], if present, shall
be set to ONE. If the ISO 9660 Directory Record File Identifier
is (01), then the PARENT bit of the "NM" Flags field [...],
if present, shall be set to ONE.
[...]
"BP 3 - Length (LEN_NM)" shall specify as an 8-bit number the
length in bytes [...]. If bit position 1, 2, or 5 of the "NM"
Flags is set to ONE, the value of this field shall be 5 and no
Name Content shall be recorded.
[The CURRENT bit has position 1. The PARENT bit has position 2.]
*/
ret = rrip_add_NM(t, info, NULL, 0, 1 << type, 0);
if (ret < 0)
goto add_susp_cleanup;
} }
if (type == 1 && n->parent == NULL) { if (type == 1 && n->parent == NULL) {