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Implemented reading of AA field string from iso_node_get_xinfo().

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(No AA strings get submitted as xinfo yet.)
This commit is contained in:
Thomas Schmitt 2009-01-14 15:49:02 +01:00
parent 3294dd5e94
commit 3c91c2f333
4 changed files with 119 additions and 33 deletions
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11
libisofs/aaip_0_2.c
View File

@ -478,6 +478,17 @@ struct aaip_state {
/* ------- functions ------ */
size_t aaip_count_bytes(char aa_name[2], unsigned char *data, int flag)
{
int done = 0;
unsigned char *aapt;
for(aapt= data; !done; aapt += aapt[2])
done = !(aapt[4] & 1);
return((size_t) (aapt - data));
}
size_t aaip_sizeof_aaip_state(void)
{
return((size_t) sizeof(struct aaip_state));

11
libisofs/aaip_0_2.h
View File

@ -117,6 +117,17 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
*/
/* This function expects to get submitted a complete chain of AA fields and
determines its size by interpeting the SUSP structure..
@param aa_name The Signature Word (advised is "AA") to be looked for
@param data An arbitrary number of bytes beginning with the
complete chain of AA fields. Trailing trash is ignored.
@param flag Unused yet. Submit 0.
@return The number of bytes of the AA field chain.
*/
size_t aaip_count_bytes(char aa_name[2], unsigned char *data, int flag);
/* The AAIP decoder context.
*/
struct aaip_state;

128
libisofs/rockridge.c
View File

@ -13,6 +13,7 @@
#include "writer.h"
#include "messages.h"
#include "image.h"
#include "aaip_0_2.h"
#include <string.h>
@ -661,6 +662,22 @@ int susp_add_SP(Ecma119Image *t, struct susp_info *susp)
return susp_append(t, susp, SP);
}
#ifdef Libisofs_with_aaiP
/* ts A90114 */
static
int aaip_xinfo_func(void *data, int flag)
{
if (flag & 1) {
free(data);
}
return 1;
}
#endif /* Libisofs_with_aaiP */
/**
* Compute the length needed for write all RR and SUSP entries for a given
* node.
@ -682,8 +699,9 @@ size_t rrip_calc_len(Ecma119Image *t, Ecma119Node *n, int type, size_t space,
#ifdef Libisofs_with_aaiP
/* ts A90112 */
uint8_t *aapt;
void *xipt;
size_t num_aapt = 0, sua_free = 0;
int ret;
#endif
/* space min is 255 - 33 - 37 = 185
@ -849,23 +867,35 @@ size_t rrip_calc_len(Ecma119Image *t, Ecma119Node *n, int type, size_t space,
#ifdef Libisofs_with_aaiP
/* ts A90112 */
aapt = NULL;
xipt = NULL;
#ifdef Libisofs_with_aaip_dummY
num_aapt = 28;
aaip_xinfo_func(NULL, 0); /* to avoid compiler warning */
#else /* Libisofs_with_aaip_dummY */
/* >>> obtain num_aapt from node */;
/* obtain num_aapt from node */
num_aapt = 0;
/* >>> if AAIP is enabled */
if (1) {
ret = iso_node_get_xinfo(n->node, aaip_xinfo_func, &xipt);
if (ret == 1) {
num_aapt = aaip_count_bytes("AA", (unsigned char *) xipt, 0);
}
}
#endif /* ! Libisofs_with_aaip_dummY */
/* let the expert decide where to add num_aapt */
sua_free = space - su_size;
aaip_add_AA(NULL, NULL, NULL, num_aapt, &sua_free, ce, 1);
su_size = space - sua_free;
if (num_aapt > 0) {
sua_free = space - su_size;
aaip_add_AA(NULL, NULL, NULL, num_aapt, &sua_free, ce, 1);
su_size = space - sua_free;
}
#endif /* Libisofs_with_aaiP */
@ -887,17 +917,20 @@ size_t rrip_calc_len(Ecma119Image *t, Ecma119Node *n, int type, size_t space,
#ifdef Libisofs_with_aaip_dummY
if (1) {
#else /* Libisofs_with_aaip_dummY */
*ce += 160; /* ER of AAIP */
/* >>> if AAIP is enabled */
if (1) {
#endif /* ! Libisofs_with_aaip_dummY */
/* >>> if AAIP is enabled */
/* >>> *ce += 160; */; /* ER of AAIP */
*ce += 160; /* ER of AAIP */
#endif /* Libisofs_with_aaiP */
}
}
}
@ -957,6 +990,7 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
#ifdef Libisofs_with_aaiP
/* ts A90112 */
uint8_t *aapt;
void *xipt;
size_t num_aapt= 0;
#endif
size_t aaip_er_len= 0;
@ -1280,8 +1314,9 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
}
#ifdef Libisofs_with_aaiP
/* ts A90112 */
#ifdef Libisofs_with_aaip_dummY
/* ts A90112 */
{
static uint8_t dummy_aa[28]= {
@ -1300,21 +1335,44 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
memcpy(aapt, dummy_aa, num_aapt);
ret = aaip_add_AA(t, info, aapt, num_aapt, &sua_free, &ce_len, 0);
}
#else /* Libisofs_with_aaip_dummY */
/* >>> obtain aapt and num_aapt from node */;
aapt = NULL;
num_aapt = 0;
ret = ISO_SUCCESS;
#endif /* ! Libisofs_with_aaip_dummY */
if (ret < 0) {
goto add_susp_cleanup;
}
}
#else /* Libisofs_with_aaip_dummY */
/* ts A90114 */
/* Obtain AA field string from node
and write it to directory entry or CE area.
*/
aapt = NULL;
ret = ISO_SUCCESS;
num_aapt = 0;
/* >>> if AAIP is enabled */
if (1) {
ret = iso_node_get_xinfo(n->node, aaip_xinfo_func, &xipt);
if (ret == 1) {
num_aapt = aaip_count_bytes("AA", (unsigned char *) xipt, 0);
if (num_aapt > 0) {
aapt = malloc(num_aapt);
if (aapt == NULL) {
ret = ISO_OUT_OF_MEM;
goto add_susp_cleanup;
}
memcpy(aapt, xipt, num_aapt);
ret = aaip_add_AA(t, info, aapt, num_aapt,
&sua_free, &ce_len, 0);
if (ret < 0) {
goto add_susp_cleanup;
}
}
}
}
#endif /* ! Libisofs_with_aaip_dummY */
#endif /* Libisofs_with_aaiP */
@ -1336,19 +1394,22 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
*/
#ifdef Libisofs_with_aaiP
/* ts A90113 */
/* ts A90113 */
#ifdef Libisofs_with_aaip_dummY
aaip_er_len = 160;
if (1) {
#else /* Libisofs_with_aaip_dummY */
/* >>> if AAIP is enabled */
/* aaip_er_len = 160; */
if (1) {
#endif /* ! Libisofs_with_aaip_dummY */
aaip_er_len = 160;
}
#endif /* Libisofs_with_aaiP */
ret = susp_add_CE(t, 182 + aaip_er_len, info);
@ -1362,22 +1423,25 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
}
#ifdef Libisofs_with_aaiP
/* ts A90113 */
#ifdef Libisofs_with_aaip_dummY
/* ts A90113 */
ret = aaip_add_ER(t, info, "AA", 0);
if (ret < 0) {
goto add_susp_cleanup;
}
if (1) {
#else /* Libisofs_with_aaip_dummY */
/* >>> if AAIP is enabled */
/* >>> write the ER entry of AAIP : aaip_add_ER() */;
if (1) {
#endif /* ! Libisofs_with_aaip_dummY */
ret = aaip_add_ER(t, info, "AA", 0);
if (ret < 0) {
goto add_susp_cleanup;
}
}
#endif /* Libisofs_with_aaiP */
}

2
libisofs/rockridge.h
View File

@ -271,7 +271,7 @@ int read_rr_PN(struct susp_sys_user_entry *pn, struct stat *st);
/* ts A90112
<<< write dummy AAIP fields with any node
# define Libisofs_with_aaip_dummY yes
*/
#define Libisofs_with_aaip_dummY yes
#endif /* LIBISO_ROCKRIDGE_H */