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kernel/fs/fat: Fix volume label of newly created filesystems

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* solves #17659
* We assigned the volume label to the root, but not the boot
  sector (partition boot sector, not MBR)

Change-Id: I9c53204c18709c2d225cc8ea338290aa89d42083
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5106
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
This commit is contained in:
Alexander von Gluck IV 2022-03-15 17:23:56 -05:00 committed by Jessica Hamilton
parent f67e053883
commit d188fff30b
1 changed files with 22 additions and 20 deletions
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42
src/add-ons/kernel/file_systems/fat/mkdos.cpp
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@ -16,13 +16,28 @@
void PrintUsage();
void CreateVolumeLabel(void *sector, const char *label);
status_t Initialize(int fatbits, const char *device, const char *label,
bool noprompt, bool testmode);
status_t parse_initialize_parameters(const char* parameterString,
initialize_parameters& parameters);
static void
create_volume_label_sector(void *sector, const char *label)
{
// create a volume name directory entry in the 512 byte sector
// XXX convert from UTF8, and check for valid characters
// XXX this could be changed to use long file name entrys,
// XXX but the dosfs would have to be updated, too
fatdirent *d = (fatdirent *)sector;
memset(d, 0, sizeof(*d));
memset(d->Name, 0x20, 11);
memcpy(d->Name, label, min_c(11, strlen(label)));
d->Attr = 0x08;
}
status_t
check_volume_name(const char* name)
{
@ -389,7 +404,8 @@ dosfs_initialize(int fd, partition_id partitionID, const char* name,
bs->BS_Reserved1 = 0x00;
bs->BS_BootSig = 0x29;
*(uint32*)bs->BS_VolID = (uint32)system_time();
memcpy(bs->BS_VolLab,"NO NAME ",11);
memset(bs->BS_VolLab, 0x20, 11);
memcpy(bs->BS_VolLab, label, min_c(11, strlen(label)));
memcpy(bs->BS_FilSysType,"FAT32 ",8);
bs->signature = B_HOST_TO_LENDIAN_INT16(0xAA55);
} else {
@ -419,7 +435,8 @@ dosfs_initialize(int fd, partition_id partitionID, const char* name,
bs->BS_Reserved1 = 0x00;
bs->BS_BootSig = 0x29;
*(uint32*)bs->BS_VolID = (uint32)system_time();
memcpy(bs->BS_VolLab,"NO NAME ",11);
memset(bs->BS_VolLab, 0x20, 11);
memcpy(bs->BS_VolLab, label, min_c(11, strlen(label)));
memcpy(bs->BS_FilSysType,(fatbits == 12) ? "FAT12 " : "FAT16 ",8);
bs->signature = B_HOST_TO_LENDIAN_INT16(0xAA55);
}
@ -553,7 +570,7 @@ dosfs_initialize(int fd, partition_id partitionID, const char* name,
if (fatbits == 12 || fatbits == 16) {
uint8 data[512];
memset(data, 0, 512);
CreateVolumeLabel(data, label);
create_volume_label_sector(data, label);
uint32 rootDirSector = reservedSectorCount + (numFATs * FATSize);
written = write_pos(fd, rootDirSector * 512, data, 512);
if (written != 512) {
@ -565,7 +582,7 @@ dosfs_initialize(int fd, partition_id partitionID, const char* name,
int size = 512 * sectorPerCluster;
uint8 *cluster = (uint8*)malloc(size);
memset(cluster, 0, size);
CreateVolumeLabel(cluster, label);
create_volume_label_sector(cluster, label);
uint32 rootDirSector = reservedSectorCount + (numFATs * FATSize)
+ rootDirSectors;
written = write_pos(fd, rootDirSector * 512, cluster, size);
@ -727,18 +744,3 @@ main(int argc, char *argv[])
return (s == B_OK) ? 0 : 1;
}
#endif
void CreateVolumeLabel(void *sector, const char *label)
{
// create a volume name directory entry in the 512 byte sector
// XXX convert from UTF8, and check for valid characters
// XXX this could be changed to use long file name entrys,
// XXX but the dosfs would have to be updated, too
fatdirent *d = (fatdirent *)sector;
memset(d, 0, sizeof(*d));
memset(d->Name, 0x20, 11);
memcpy(d->Name, label, min_c(11, strlen(label)));
d->Attr = 0x08;
}