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Leave prediction of first CE gap to susp_*_to_ce() functions

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This commit is contained in:
Thomas Schmitt 2021-02-28 17:21:35 +01:00
parent 7d248c46e1
commit 9e389186f7
1 changed files with 4 additions and 66 deletions
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70
libisofs/rockridge.c
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@ -930,27 +930,6 @@ int susp_add_ES(Ecma119Image *t, struct susp_info *susp, int to_ce, int seqno)
} }
/**
* A field beginning by 0 causes rrip_write_ce_fields() to pad up to the
* next block.
*/
static
int pseudo_susp_add_PAD(Ecma119Image *t, struct susp_info *susp)
{
unsigned char *pad;
int ret;
pad = malloc(1);
if (pad == NULL)
return ISO_OUT_OF_MEM;
pad[0] = 0;
ret = susp_append_ce(t, susp, pad);
if (ret < 0)
return ret;
return ISO_SUCCESS;
}
/** /**
* see doc/zisofs_format.txt : "ZF System Use Entry Format" * see doc/zisofs_format.txt : "ZF System Use Entry Format"
* see doc/zisofs2_format.txt : "ZF System Use Entry Format", "Z2 ..." * see doc/zisofs2_format.txt : "ZF System Use Entry Format", "Z2 ..."
@ -1166,7 +1145,7 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
size_t *su_size, size_t *ce, size_t base_ce, int flag) size_t *su_size, size_t *ce, size_t base_ce, int flag)
{ {
char *name; char *name;
size_t namelen, su_mem, ce_mem, ce_prepad = 0; size_t namelen, su_mem, ce_mem;
void *xipt; void *xipt;
size_t num_aapt = 0, sua_free = 0; size_t num_aapt = 0, sua_free = 0;
int ret; int ret;
@ -1185,21 +1164,8 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
if (*ce > 0 && !(flag & 1)) if (*ce > 0 && !(flag & 1))
goto unannounced_ca; goto unannounced_ca;
if (flag & 2) { if (flag & 2)
flag |= 1; flag |= 1;
if (base_ce % BLOCK_SIZE) {
#ifdef Libisofs_ce_calc_debuG
fprintf(stderr,
"\nlibburn_DEBUG: Accounting for %d bytes CE padding : %s\n\n",
(int) (BLOCK_SIZE - (base_ce % BLOCK_SIZE)), n->node->name);
#endif /* Libisofs_ce_calc_debuG */
ce_prepad = BLOCK_SIZE - (base_ce % BLOCK_SIZE);
}
}
namelen = 0; namelen = 0;
name = get_rr_fname(t, n->node->name); name = get_rr_fname(t, n->node->name);
@ -1210,10 +1176,8 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
if (flag & 1) { if (flag & 1) {
/* Account for 28 bytes of CE field */ /* Account for 28 bytes of CE field */
if (*su_size + 28 > space) { if (*su_size + 28 > space)
*ce += ce_prepad;
return -1; return -1;
}
*su_size += 28; *su_size += 28;
} }
@ -1244,10 +1208,8 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
int cew = (*ce != 0); /* are we writing to CA ? */ int cew = (*ce != 0); /* are we writing to CA ? */
dest = get_rr_fname(t, ((IsoSymlink*)n->node)->dest); dest = get_rr_fname(t, ((IsoSymlink*)n->node)->dest);
if (dest == NULL) { if (dest == NULL)
*ce += ce_prepad;
return -2; return -2;
}
prev = dest; prev = dest;
cur = strchr(prev, '/'); cur = strchr(prev, '/');
while (1) { while (1) {
@ -1357,9 +1319,6 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
if (*ce > 0 && !(flag & 1)) if (*ce > 0 && !(flag & 1))
goto unannounced_ca; goto unannounced_ca;
*ce += ce_prepad;
ce_prepad = 0;
/* obtain num_aapt from node */ /* obtain num_aapt from node */
xipt = NULL; xipt = NULL;
num_aapt = 0; num_aapt = 0;
@ -1412,7 +1371,6 @@ int susp_calc_nm_sl_al(Ecma119Image *t, Ecma119Node *n, size_t space,
} }
} }
*ce += ce_prepad;
return 1; return 1;
unannounced_ca:; unannounced_ca:;
@ -1997,26 +1955,6 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
} }
if (ce_is_predicted) { if (ce_is_predicted) {
if ((info->ce_len % BLOCK_SIZE) &&
(info->ce_len + ce_len_pd - 1 ) / BLOCK_SIZE !=
info->ce_len / BLOCK_SIZE) {
/* Linux fs/isofs wants byte_offset + ce_len <= BLOCK_SIZE
* Insert padding to shift CE offset to next block start
*/
#ifdef Libisofs_ce_calc_debuG
fprintf(stderr,
"\nlibburn_DEBUG: Inserting %d bytes of CE padding : %s\n\n",
(int) (BLOCK_SIZE - (info->ce_len % BLOCK_SIZE)),
n->node->name);
#endif /* Libisofs_ce_calc_debuG */
ret = pseudo_susp_add_PAD(t, info);
if (ret < 0)
goto add_susp_cleanup;
}
/* Add the CE entry */ /* Add the CE entry */
ret = susp_add_CE(t, ce_len_pd, info); ret = susp_add_CE(t, ce_len_pd, info);
if (ret < 0) { if (ret < 0) {