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btrfs-progs: Allow "filesystem show" command to handle different units

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Now "filesystem show" command can handle different units now.

This is handy for higher level programs to get accurate output from "fi
show" command.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Qu Wenruo 2015-06-18 14:46:11 +08:00 committed by David Sterba
parent fbb83c2df3
commit 15379fa225
1 changed files with 60 additions and 14 deletions
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74
cmds-filesystem.c
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@ -375,7 +375,7 @@ static void splice_device_list(struct list_head *seed_devices,
}
static void print_devices(struct btrfs_fs_devices *fs_devices,
u64 *devs_found)
u64 *devs_found, unsigned unit_mode)
{
struct btrfs_device *device;
struct btrfs_fs_devices *cur_fs;
@ -393,14 +393,16 @@ static void print_devices(struct btrfs_fs_devices *fs_devices,
list_for_each_entry(device, all_devices, dev_list) {
printf("\tdevid %4llu size %s used %s path %s\n",
(unsigned long long)device->devid,
pretty_size(device->total_bytes),
pretty_size(device->bytes_used), device->name);
pretty_size_mode(device->total_bytes, unit_mode),
pretty_size_mode(device->bytes_used, unit_mode),
device->name);
(*devs_found)++;
}
}
static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
static void print_one_uuid(struct btrfs_fs_devices *fs_devices,
unsigned unit_mode)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
struct btrfs_device *device;
@ -421,9 +423,9 @@ static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
total = device->total_devs;
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
(unsigned long long)total,
pretty_size(device->super_bytes_used));
pretty_size_mode(device->super_bytes_used, unit_mode));
print_devices(fs_devices, &devs_found);
print_devices(fs_devices, &devs_found, unit_mode);
if (devs_found < total) {
printf("\t*** Some devices missing\n");
@ -445,7 +447,7 @@ static u64 calc_used_bytes(struct btrfs_ioctl_space_args *si)
static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
struct btrfs_ioctl_dev_info_args *dev_info,
struct btrfs_ioctl_space_args *space_info,
char *label, char *path)
char *label, char *path, unsigned unit_mode)
{
int i;
int fd;
@ -468,7 +470,8 @@ static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
fs_info->num_devices,
pretty_size(calc_used_bytes(space_info)));
pretty_size_mode(calc_used_bytes(space_info),
unit_mode));
for (i = 0; i < fs_info->num_devices; i++) {
char *canonical_path;
@ -485,8 +488,8 @@ static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
canonical_path = canonicalize_path((char *)tmp_dev_info->path);
printf("\tdevid %4llu size %s used %s path %s\n",
tmp_dev_info->devid,
pretty_size(tmp_dev_info->total_bytes),
pretty_size(tmp_dev_info->bytes_used),
pretty_size_mode(tmp_dev_info->total_bytes, unit_mode),
pretty_size_mode(tmp_dev_info->bytes_used, unit_mode),
canonical_path);
free(canonical_path);
@ -498,7 +501,7 @@ static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
return 0;
}
static int btrfs_scan_kernel(void *search)
static int btrfs_scan_kernel(void *search, unsigned unit_mode)
{
int ret = 0, fd;
int found = 0;
@ -537,7 +540,8 @@ static int btrfs_scan_kernel(void *search)
fd = open(mnt->mnt_dir, O_RDONLY);
if ((fd != -1) && !get_df(fd, &space_info_arg)) {
print_one_fs(&fs_info_arg, dev_info_arg,
space_info_arg, label, mnt->mnt_dir);
space_info_arg, label, mnt->mnt_dir,
unit_mode);
kfree(space_info_arg);
memset(label, 0, sizeof(label));
found = 1;
@ -816,6 +820,14 @@ static const char * const cmd_show_usage[] = {
"Show the structure of a filesystem",
"-d|--all-devices show only disks under /dev containing btrfs filesystem",
"-m|--mounted show only mounted btrfs",
"--raw raw numbers in bytes",
"--human-readable human friendly numbers, base 1024 (default)",
"--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
"--si use 1000 as a base (kB, MB, GB, TB)",
"--kbytes show sizes in KiB, or kB with --si",
"--mbytes show sizes in MiB, or MB with --si",
"--gbytes show sizes in GiB, or GB with --si",
"--tbytes show sizes in TiB, or TB with --si",
"If no argument is given, structure of all present filesystems is shown.",
NULL
};
@ -833,6 +845,7 @@ static int cmd_show(int argc, char **argv)
char path[PATH_MAX];
__u8 fsid[BTRFS_FSID_SIZE];
char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
unsigned unit_mode = UNITS_DEFAULT;
int found = 0;
while (1) {
@ -840,6 +853,15 @@ static int cmd_show(int argc, char **argv)
static const struct option long_options[] = {
{ "all-devices", no_argument, NULL, 'd'},
{ "mounted", no_argument, NULL, 'm'},
{ "raw", no_argument, NULL, GETOPT_VAL_RAW},
{ "kbytes", no_argument, NULL, GETOPT_VAL_KBYTES},
{ "mbytes", no_argument, NULL, GETOPT_VAL_MBYTES},
{ "gbytes", no_argument, NULL, GETOPT_VAL_GBYTES},
{ "tbytes", no_argument, NULL, GETOPT_VAL_TBYTES},
{ "si", no_argument, NULL, GETOPT_VAL_SI},
{ "iec", no_argument, NULL, GETOPT_VAL_IEC},
{ "human-readable", no_argument, NULL,
GETOPT_VAL_HUMAN_READABLE},
{ NULL, 0, NULL, 0 }
};
@ -853,6 +875,30 @@ static int cmd_show(int argc, char **argv)
case 'm':
where = BTRFS_SCAN_MOUNTED;
break;
case GETOPT_VAL_RAW:
units_set_mode(&unit_mode, UNITS_RAW);
break;
case GETOPT_VAL_KBYTES:
units_set_base(&unit_mode, UNITS_KBYTES);
break;
case GETOPT_VAL_MBYTES:
units_set_base(&unit_mode, UNITS_MBYTES);
break;
case GETOPT_VAL_GBYTES:
units_set_base(&unit_mode, UNITS_GBYTES);
break;
case GETOPT_VAL_TBYTES:
units_set_base(&unit_mode, UNITS_TBYTES);
break;
case GETOPT_VAL_SI:
units_set_mode(&unit_mode, UNITS_DECIMAL);
break;
case GETOPT_VAL_IEC:
units_set_mode(&unit_mode, UNITS_BINARY);
break;
case GETOPT_VAL_HUMAN_READABLE:
units_set_mode(&unit_mode, UNITS_HUMAN_BINARY);
break;
default:
usage(cmd_show_usage);
}
@ -908,7 +954,7 @@ static int cmd_show(int argc, char **argv)
goto devs_only;
/* show mounted btrfs */
ret = btrfs_scan_kernel(search);
ret = btrfs_scan_kernel(search, unit_mode);
if (search && !ret) {
/* since search is found we are done */
goto out;
@ -945,7 +991,7 @@ devs_only:
}
list_for_each_entry(fs_devices, &all_uuids, list)
print_one_uuid(fs_devices);
print_one_uuid(fs_devices, unit_mode);
if (search && !found)
ret = 1;