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pbatard flexible array for ecma_167.h header

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This commit is contained in:
R. Bernstein
2012-03-03 10:46:42 -05:00
parent 44ddf740e6
commit f00c1059d9
3 changed files with 56 additions and 34 deletions
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34
include/cdio/ecma_167.h
View File

@@ -1,5 +1,5 @@
/*
Copyright (c) 2005, 2006, 2008 Rocky Bernstein <rocky@cpan.org>
Copyright (c) 2005, 2006, 2008, 2012 Rocky Bernstein <rocky@cpan.org>
Copyright (c) 2001-2002 Ben Fennema <bfennema@falcon.csc.calpoly.edu>
This program is free software: you can redistribute it and/or modify
@@ -499,9 +499,11 @@ struct logvol_integrity_desc_s
udf_Uint8_t logvol_contents_use[32];
udf_Uint32_t i_partitions;
udf_Uint32_t imp_use_len;
udf_Uint32_t freespace_table[0];
udf_Uint32_t size_table[0];
udf_Uint8_t imp_use[0];
union { /* MSVC workaround for multiple zero sized arrays */
udf_Uint32_t freespace_table[0];
udf_Uint32_t size_table[0];
udf_Uint8_t imp_use[0];
} u;
} GNUC_PACKED;
/** Integrity Type (ECMA 167r3 3/10.10.3) */
@@ -571,9 +573,11 @@ struct udf_fileid_desc_s
udf_Uint8_t i_file_id;
udf_long_ad_t icb;
udf_Uint16_t i_imp_use;
udf_Uint8_t imp_use[0];
udf_Uint8_t file_id[0];
udf_Uint8_t padding[0];
union { /* MSVC workaround for multiple zero sized arrays */
udf_Uint8_t imp_use[0];
udf_Uint8_t file_id[0];
udf_Uint8_t padding[0];
} u;
} GNUC_PACKED;
typedef struct udf_fileid_desc_s udf_fileid_desc_t;
@@ -727,8 +731,14 @@ struct udf_file_entry_s
udf_Uint64_t unique_ID;
udf_Uint32_t i_extended_attr;
udf_Uint32_t i_alloc_descs;
udf_Uint8_t ext_attr[0];
udf_Uint8_t alloc_descs[0];
/* The following union allows file entry reuse without worrying
about overflows, by ensuring the struct is always the
maximum possible size allowed by the specs: one UDF block. */
union {
udf_Uint8_t ext_attr[0];
udf_Uint8_t alloc_descs[0];
udf_Uint8_t pad_to_one_block[2048-176];
} u;
} GNUC_PACKED;
typedef struct udf_file_entry_s udf_file_entry_t;
@@ -985,8 +995,10 @@ struct extended_file_entry
udf_Uint64_t unique_ID;
udf_Uint32_t length_extended_attr;
udf_Uint32_t length_alloc_descs;
udf_Uint8_t ext_attr[0];
udf_Uint8_t alloc_descs[0];
union { /* MSVC workaround for multiple zero sized arrays */
udf_Uint8_t ext_attr[0];
udf_Uint8_t alloc_descs[0];
} u;
} GNUC_PACKED;
PRAGMA_END_PACKED

44
lib/udf/udf_file.c
View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2005, 2006, 2008, 2010 Rocky Bernstein <rocky@gnu.org>
Copyright (C) 2005, 2006, 2008, 2010, 2012 Rocky Bernstein <rocky@gnu.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -26,7 +26,9 @@
# include <string.h>
#endif
#ifdef HAVE_STDIO_H
#include <stdio.h> /* Remove when adding cdio/logging.h */
#endif
/* Useful defines */
@@ -34,7 +36,7 @@
#define CEILING(x, y) ((x+(y-1))/y)
#define GETICB(offset) \
&p_udf_fe->alloc_descs[offset]
&p_udf_fe->u.alloc_descs[offset]
const char *
udf_get_filename(const udf_dirent_t *p_udf_dirent)
@@ -44,8 +46,7 @@ udf_get_filename(const udf_dirent_t *p_udf_dirent)
return p_udf_dirent->psz_name;
}
/* Get UDF File Entry. However we do NOT get the variable-length extended
attributes. */
/* Copy an UDF File Entry into a Directory Entry structure. */
bool
udf_get_file_entry(const udf_dirent_t *p_udf_dirent,
/*out*/ udf_file_entry_t *p_udf_fe)
@@ -117,15 +118,20 @@ offset_to_lba(const udf_dirent_t *p_udf_dirent, off_t i_offset,
const udf_icbtag_t *p_icb_tag = &p_udf_fe->icb_tag;
const uint16_t strat_type= uint16_from_le(p_icb_tag->strat_type);
if (i_offset < 0) {
cdio_warn("Negative offset value");
return CDIO_INVALID_LBA;
}
switch (strat_type) {
case 4096:
printf("Cannot deal with strategy4096 yet!\n");
cdio_warn("Cannot deal with strategy4096 yet!");
return CDIO_INVALID_LBA;
break;
case ICBTAG_STRATEGY_TYPE_4:
{
uint32_t icblen = 0;
lba_t lsector;
off_t icblen = 0;
uint64_t lsector;
int ad_offset, ad_num = 0;
uint16_t addr_ilk = uint16_from_le(p_icb_tag->flags&ICBTAG_FLAG_AD_MASK);
@@ -142,7 +148,7 @@ offset_to_lba(const udf_dirent_t *p_udf_dirent, off_t i_offset,
i_offset -= icblen;
ad_offset = sizeof(udf_short_ad_t) * ad_num;
if (ad_offset > uint32_from_le(p_udf_fe->i_alloc_descs)) {
printf("File offset out of bounds\n");
cdio_warn("File offset out of bounds");
return CDIO_INVALID_LBA;
}
p_icb = (udf_short_ad_t *)
@@ -169,7 +175,7 @@ offset_to_lba(const udf_dirent_t *p_udf_dirent, off_t i_offset,
i_offset -= icblen;
ad_offset = sizeof(udf_long_ad_t) * ad_num;
if (ad_offset > uint32_from_le(p_udf_fe->i_alloc_descs)) {
printf("File offset out of bounds\n");
cdio_warn("File offset out of bounds");
return CDIO_INVALID_LBA;
}
p_icb = (udf_long_ad_t *)
@@ -191,21 +197,25 @@ offset_to_lba(const udf_dirent_t *p_udf_dirent, off_t i_offset,
* allocation descriptor field of the file entry.
*/
*pi_max_size = 0;
printf("Don't know how to data in ICB handle yet\n");
cdio_warn("Don't know how to data in ICB handle yet");
return CDIO_INVALID_LBA;
case ICBTAG_FLAG_AD_EXTENDED:
printf("Don't know how to handle extended addresses yet\n");
cdio_warn("Don't know how to handle extended addresses yet");
return CDIO_INVALID_LBA;
default:
printf("Unsupported allocation descriptor %d\n", addr_ilk);
cdio_warn("Unsupported allocation descriptor %d", addr_ilk);
return CDIO_INVALID_LBA;
}
*pi_lba = lsector + p_udf->i_part_start;
*pi_lba = (lba_t)lsector + p_udf->i_part_start;
if (*pi_lba < 0) {
cdio_warn("Negative LBA value");
return CDIO_INVALID_LBA;
}
return *pi_lba;
}
default:
printf("Unknown strategy type %d\n", strat_type);
cdio_warn("Unknown strategy type %d", strat_type);
return DRIVER_OP_ERROR;
}
}
@@ -238,9 +248,9 @@ udf_read_block(const udf_dirent_t *p_udf_dirent, void * buf, size_t count)
if (i_lba != CDIO_INVALID_LBA) {
uint32_t i_max_blocks = CEILING(i_max_size, UDF_BLOCKSIZE);
if ( i_max_blocks < count ) {
fprintf(stderr, "Warning: read count %u is larger than %u extent size.\n",
count, i_max_blocks);
fprintf(stderr, "Warning: read count truncated to %u\n", count);
cdio_warn("read count %u is larger than %u extent size.",
(unsigned int)count, i_max_blocks);
cdio_warn("read count truncated to %u", (unsigned int)count);
count = i_max_blocks;
}
ret = udf_read_sectors(p_udf, buf, i_lba, count);

8
lib/udf/udf_fs.c
View File

@@ -159,7 +159,7 @@ udf_get_lba(const udf_file_entry_t *p_udf_fe,
{
/* The allocation descriptor field is filled with short_ad's. */
udf_short_ad_t *p_ad = (udf_short_ad_t *)
(p_udf_fe->ext_attr + p_udf_fe->i_extended_attr);
(p_udf_fe->u.ext_attr + p_udf_fe->i_extended_attr);
*start = uint32_from_le(p_ad->pos);
*end = *start +
@@ -171,7 +171,7 @@ udf_get_lba(const udf_file_entry_t *p_udf_fe,
{
/* The allocation descriptor field is filled with long_ad's */
udf_long_ad_t *p_ad = (udf_long_ad_t *)
(p_udf_fe->ext_attr + p_udf_fe->i_extended_attr);
(p_udf_fe->u.ext_attr + p_udf_fe->i_extended_attr);
*start = uint32_from_le(p_ad->loc.lba); /* ignore partition number */
*end = *start +
@@ -182,7 +182,7 @@ udf_get_lba(const udf_file_entry_t *p_udf_fe,
case ICBTAG_FLAG_AD_EXTENDED:
{
udf_ext_ad_t *p_ad = (udf_ext_ad_t *)
(p_udf_fe->ext_attr + p_udf_fe->i_extended_attr);
(p_udf_fe->u.ext_attr + p_udf_fe->i_extended_attr);
*start = uint32_from_le(p_ad->ext_loc.lba); /* ignore partition number */
*end = *start +
@@ -681,7 +681,7 @@ udf_readdir(udf_dirent_t *p_udf_dirent)
p_udf_dirent->psz_name = (char *)
realloc(p_udf_dirent->psz_name, sizeof(char)*i_len+1);
unicode16_decode(p_udf_dirent->fid->imp_use
unicode16_decode(p_udf_dirent->fid->u.imp_use
+ p_udf_dirent->fid->i_imp_use,
i_len, p_udf_dirent->psz_name);
}