Change btrfs filesystem df to allow the user to control the scales
used for sizes in the output.
Signed-off-by: Hugo Mills <h...@carfax.org.uk>
---
btrfs.c | 6 +++---
btrfs_cmds.c | 42 ++++++++++++++++++++++++++++++++++++------
man/btrfs.8.in | 8 ++++++++
3 files changed, 47 insertions(+), 9 deletions(-)
Index: btrfs-progs-unstable/btrfs.c
===================================================================
--- btrfs-progs-unstable.orig/btrfs.c 2010-10-20 19:12:18.000000000 +0100
+++ btrfs-progs-unstable/btrfs.c 2010-10-20 19:48:34.000000000 +0100
@@ -87,9 +87,9 @@
"Show the info of a btrfs filesystem. If no <uuid> or <label>\n"
"is passed, info of all the btrfs filesystem are shown."
},
- { do_df_filesystem, 1,
- "filesystem df", "<path>\n"
- "Show space usage information for a mount point\n."
+ { do_df_filesystem, -1,
+ "filesystem df", "[options] <path>\n"
+ "Show space usage information for a mount point."
},
{ do_balance, 1,
"filesystem balance", "<path>\n"
Index: btrfs-progs-unstable/btrfs_cmds.c
===================================================================
--- btrfs-progs-unstable.orig/btrfs_cmds.c 2010-10-20 19:19:20.000000000
+0100
+++ btrfs-progs-unstable/btrfs_cmds.c 2010-10-20 19:58:48.000000000 +0100
@@ -14,7 +14,6 @@
* Boston, MA 021110-1307, USA.
*/
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -28,6 +27,7 @@
#include <limits.h>
#include <uuid/uuid.h>
#include <ctype.h>
+#include <getopt.h>
#undef ULONG_MAX
@@ -835,13 +835,45 @@
return 0;
}
+const struct option df_options[] = {
+ { "human-readable", 0, NULL, 'h' },
+ { "si", 0, NULL, 'H' },
+ { NULL, 0, NULL, 0 }
+};
+
int do_df_filesystem(int nargs, char **argv)
{
struct btrfs_ioctl_space_args *sargs;
u64 count = 0, i;
int ret;
int fd;
- char *path = argv[1];
+ char *path;
+ int format = PRETTY_SIZE_RAW;
+
+ optind = 1;
+ while(1) {
+ int c = getopt_long(nargs, argv, "hH", df_options, NULL);
+ if (c < 0)
+ break;
+ switch(c) {
+ case 'h':
+ format = PRETTY_SIZE_BINARY;
+ break;
+ case 'H':
+ format = PRETTY_SIZE_ISO;
+ break;
+ default:
+ fprintf(stderr, "Invalid arguments for df\n");
+ free(argv);
+ return 1;
+ }
+ }
+ if (nargs - optind != 1) {
+ fprintf(stderr, "No path given for df\n");
+ free(argv);
+ return 1;
+ }
+ path = argv[optind];
fd = open_file_or_dir(path);
if (fd < 0) {
@@ -914,10 +946,8 @@
written += 8;
}
- total_bytes = pretty_sizes(sargs->spaces[i].total_bytes,
-
PRETTY_SIZE_RAW);
- used_bytes = pretty_sizes(sargs->spaces[i].used_bytes,
-
PRETTY_SIZE_RAW);
+ total_bytes = pretty_sizes(sargs->spaces[i].total_bytes,
format);
+ used_bytes = pretty_sizes(sargs->spaces[i].used_bytes, format);
printf("%s: total=%s, used=%s\n", description, total_bytes,
used_bytes);
}
Index: btrfs-progs-unstable/man/btrfs.8.in
===================================================================
--- btrfs-progs-unstable.orig/man/btrfs.8.in 2010-10-20 19:23:36.000000000
+0100
+++ btrfs-progs-unstable/man/btrfs.8.in 2010-10-20 19:28:14.000000000 +0100
@@ -21,6 +21,8 @@
.PP
\fBbtrfs\fP \fBfilesystem resize\fP\fI [+/\-]<size>[gkm]|max <filesystem>\fP
.PP
+\fBbtrfs\fP \fBfilesystem df\fP\fI [options] <path>\fP
+.PP
\fBbtrfs\fP \fBdevice scan\fP\fI [<device> [<device>..]]\fP
.PP
\fBbtrfs\fP \fBdevice show\fP\fI <dev>|<label> [<dev>|<label>...]\fP
@@ -143,6 +145,12 @@
passed, \fBbtrfs\fR show info of all the btrfs filesystem.
.TP
+\fBfilesystem df\fR [options] <path>\fR
+Show the amount of space used on this filesystem, in bytes. Options:
+-h, --human-readable Use powers of 2^10 (1024) to report sizes.
+-H, --si Use powers of 10^3 (1000) to report sizes, in SI multiples.
+.TP
+
\fBdevice balance\fR \fI<path>\fR
Balance the chunks of the filesystem identified by \fI<path>\fR
across the devices.
--
=== Hugo Mills: h...@... carfax.org.uk | darksatanic.net | lug.org.uk ===
PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
--- I spent most of my money on drink, women and fast cars. The ---
rest I wasted. -- James Hunt
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