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Let the original isohybrid GPT obey system_area() option bit 17: GPT writable

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This commit is contained in:
Thomas Schmitt 2022-04-23 09:32:44 +02:00
parent 1d61b518b5
commit da00291519
1 changed files with 11 additions and 3 deletions
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14
libisofs/make_isohybrid_mbr.c
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@ -420,8 +420,8 @@ int assess_isohybrid_gpt_apm(Ecma119Image *t, int *gpt_count, int gpt_idx[128],
0x00, 0x53, 0x46, 0x48, 0x00, 0x00, 0xaa, 0x11, 0x00, 0x53, 0x46, 0x48, 0x00, 0x00, 0xaa, 0x11,
0xaa, 0x11, 0x00, 0x30, 0x65, 0x43, 0xec, 0xac 0xaa, 0x11, 0x00, 0x30, 0x65, 0x43, 0xec, 0xac
}; };
uint8_t *uuid; uint8_t *uuid, *type_guid;
static uint64_t gpt_flags = (((uint64_t) 1) << 60) | 1; uint64_t gpt_flags = (((uint64_t) 1) << 60) | 1;
*gpt_count = 0; *gpt_count = 0;
*apm_count = 0; *apm_count = 0;
@ -504,12 +504,20 @@ int assess_isohybrid_gpt_apm(Ecma119Image *t, int *gpt_count, int gpt_idx[128],
memset(gpt_name, 0, 72); memset(gpt_name, 0, 72);
sprintf((char *) gpt_name, "ISOHybrid"); sprintf((char *) gpt_name, "ISOHybrid");
iso_ascii_utf_16le(gpt_name); iso_ascii_utf_16le(gpt_name);
if (t->opts->iso_gpt_flag & 1)
type_guid = t->opts->iso_gpt_type_guid;
else
type_guid = basic_data_uuid;
if (t->system_area_options & (1 << 16))
gpt_flags|= 4; /* Legacy BIOS bootable */
if (t->opts->system_area_options & (1 << 17))
gpt_flags &= ~(((uint64_t) 1) << 60); /* Not read-only */
/* Let it be open ended. iso_write_gpt() will truncate it as needed. */ /* Let it be open ended. iso_write_gpt() will truncate it as needed. */
block_count = 0xffffffff; block_count = 0xffffffff;
ret = iso_quick_gpt_entry(t->gpt_req, &(t->gpt_req_count), ret = iso_quick_gpt_entry(t->gpt_req, &(t->gpt_req_count),
(uint64_t) t->opts->partition_offset * 4, (uint64_t) t->opts->partition_offset * 4,
((uint64_t) block_count) * 4, ((uint64_t) block_count) * 4,
basic_data_uuid, zero_uuid, gpt_flags, type_guid, zero_uuid, gpt_flags,
(uint8_t *) gpt_name); (uint8_t *) gpt_name);
if (ret < 0) if (ret < 0)
return ret; return ret;