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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "dissect-image.h"
#include "extract-word.h"
#include "fd-util.h"
#include "fdisk-util.h"
#include "parse-util.h"
#if HAVE_LIBFDISK
int fdisk_new_context_at(
int dir_fd,
const char *path,
bool read_only,
uint32_t sector_size,
struct fdisk_context **ret) {
_cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL;
_cleanup_close_ int fd = -EBADF;
int r;
assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
assert(ret);
if (!isempty(path)) {
fd = openat(dir_fd, path, (read_only ? O_RDONLY : O_RDWR)|O_CLOEXEC);
if (fd < 0)
return -errno;
dir_fd = fd;
}
c = fdisk_new_context();
if (!c)
return -ENOMEM;
if (sector_size == UINT32_MAX) {
r = probe_sector_size_prefer_ioctl(dir_fd, §or_size);
if (r < 0)
return r;
}
if (sector_size != 0) {
r = fdisk_save_user_sector_size(c, /* phy= */ 0, sector_size);
if (r < 0)
return r;
}
r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(dir_fd), read_only);
if (r < 0)
return r;
*ret = TAKE_PTR(c);
return 0;
}
int fdisk_partition_get_uuid_as_id128(struct fdisk_partition *p, sd_id128_t *ret) {
const char *ids;
assert(p);
assert(ret);
ids = fdisk_partition_get_uuid(p);
if (!ids)
return -ENXIO;
return sd_id128_from_string(ids, ret);
}
int fdisk_partition_get_type_as_id128(struct fdisk_partition *p, sd_id128_t *ret) {
struct fdisk_parttype *pt;
const char *pts;
assert(p);
assert(ret);
pt = fdisk_partition_get_type(p);
if (!pt)
return -ENXIO;
pts = fdisk_parttype_get_string(pt);
if (!pts)
return -ENXIO;
return sd_id128_from_string(pts, ret);
}
int fdisk_partition_get_attrs_as_uint64(struct fdisk_partition *pa, uint64_t *ret) {
uint64_t flags = 0;
const char *a;
int r;
assert(pa);
assert(ret);
/* Retrieve current flags as uint64_t mask */
a = fdisk_partition_get_attrs(pa);
if (!a) {
*ret = 0;
return 0;
}
for (;;) {
_cleanup_free_ char *word = NULL;
r = extract_first_word(&a, &word, ",", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r < 0)
return r;
if (r == 0)
break;
if (streq(word, "RequiredPartition"))
flags |= SD_GPT_FLAG_REQUIRED_PARTITION;
else if (streq(word, "NoBlockIOProtocol"))
flags |= SD_GPT_FLAG_NO_BLOCK_IO_PROTOCOL;
else if (streq(word, "LegacyBIOSBootable"))
flags |= SD_GPT_FLAG_LEGACY_BIOS_BOOTABLE;
else {
const char *e;
unsigned u;
/* Drop "GUID" prefix if specified */
e = startswith(word, "GUID:") ?: word;
if (safe_atou(e, &u) < 0) {
log_debug("Unknown partition flag '%s', ignoring.", word);
continue;
}
if (u >= sizeof(flags)*8) { /* partition flags on GPT are 64-bit. Let's ignore any further
bits should libfdisk report them */
log_debug("Partition flag above bit 63 (%s), ignoring.", word);
continue;
}
flags |= UINT64_C(1) << u;
}
}
*ret = flags;
return 0;
}
int fdisk_partition_set_attrs_as_uint64(struct fdisk_partition *pa, uint64_t flags) {
_cleanup_free_ char *attrs = NULL;
int r;
assert(pa);
for (unsigned i = 0; i < sizeof(flags) * 8; i++) {
if (!FLAGS_SET(flags, UINT64_C(1) << i))
continue;
r = strextendf_with_separator(&attrs, ",", "%u", i);
if (r < 0)
return r;
}
return fdisk_partition_set_attrs(pa, strempty(attrs));
}
#endif
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