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Fixed a memory hog about submitting multiple fields in aaip_add_AA()

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This commit is contained in:
Thomas Schmitt 2009-01-16 13:38:02 +01:00
parent d01b3cc6cc
commit c6f4370e71
1 changed files with 29 additions and 7 deletions
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36
libisofs/rockridge.c
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@ -475,11 +475,11 @@ int rrip_add_SL(Ecma119Image *t, struct susp_info *susp, uint8_t **comp,
*/
static
int aaip_add_AA(Ecma119Image *t, struct susp_info *susp,
uint8_t *data, size_t num_data,
uint8_t **data, size_t num_data,
size_t *sua_free, size_t *ce_len, int flag)
{
int ret, done = 0;
uint8_t *aapt;
int ret, done = 0, len;
uint8_t *aapt, *cpt;
if (*sua_free < num_data || *ce_len > 0) {
*ce_len += num_data;
@ -488,16 +488,36 @@ int aaip_add_AA(Ecma119Image *t, struct susp_info *susp,
}
if (flag & 1)
return ISO_SUCCESS;
for (aapt = data; !done; aapt += aapt[2]) {
done = !(aapt[4] & 1);
aapt = *data;
if (!(aapt[4] & 1)) {
/* Single field can be handed over directly */
if (*ce_len > 0) {
ret = susp_append_ce(t, susp, aapt);
} else {
ret = susp_append(t, susp, aapt);
}
*data = NULL;
return ISO_SUCCESS;
}
/* Multiple fields have to be handed over as single field copies */
for (aapt = *data; !done; aapt += aapt[2]) {
done = !(aapt[4] & 1);
len = aapt[2];
cpt = calloc(aapt[2], 1);
if (cpt == NULL)
return ISO_OUT_OF_MEM;
memcpy(cpt, aapt, len);
if (*ce_len > 0) {
ret = susp_append_ce(t, susp, cpt);
} else {
ret = susp_append(t, susp, cpt);
}
if (ret == -1)
return ret;
}
free(*data);
*data = NULL;
return ISO_SUCCESS;
}
@ -1336,10 +1356,11 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
aapt = malloc(num_aapt);
memcpy(aapt, dummy_aa, num_aapt);
ret = aaip_add_AA(t, info, aapt, num_aapt, &sua_free, &ce_len, 0);
ret = aaip_add_AA(t, info, &aapt, num_aapt, &sua_free, &ce_len, 0);
if (ret < 0) {
goto add_susp_cleanup;
}
/* aapt is NULL now and the memory is owned by t */
}
#else /* Libisofs_with_aaip_dummY */
@ -1364,11 +1385,12 @@ int rrip_get_susp_fields(Ecma119Image *t, Ecma119Node *n, int type,
goto add_susp_cleanup;
}
memcpy(aapt, xipt, num_aapt);
ret = aaip_add_AA(t, info, aapt, num_aapt,
ret = aaip_add_AA(t, info, &aapt, num_aapt,
&sua_free, &ce_len, 0);
if (ret < 0) {
goto add_susp_cleanup;
}
/* aapt is NULL now and the memory is owned by t */
}
}
}