On 5/7/17 10:56 AM, Darrick J. Wong wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
>
> xfs_spaceman is intended as a diagnostic and control tool for space
> management operations within XFS. Operations like examining free
> space, managing allocation policies, issuing block discards on free
> space, etc.
>
> The tool is modelled on the xfs_io interface, allowing both
> interactive and command line control of the tool, enabling it to be
> used in scripts and automated management tools.
This may be a result of the xfs_io ancestry, but:
# xfs_spaceman /mnt/test2 /mnt/test
Cool, we can open 2 files(ystems)
xfs_spaceman> print
000 /mnt/test2 (non-sync,non-direct,read-write)
[001] /mnt/test (non-sync,non-direct,read-write)
(what does non-direct mean for a mountpoint?)
(actually where do these flags come from ... hm.)
Yep there we are! Now how do we switch to the other?
xfs_spaceman> help
help [command] -- help for one or all commands
print -- list current open files
quit -- exit the program
Use 'help commandname' for extended help.
hmmm... I guess we can't switch. Should we be able to?
Is the intent to open files or filesystems... both? Is there ever
a reason to be opening a file not a filesystem?
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> [darrick: change xfsctl to ioctl]
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> Makefile | 3 +
> spaceman/Makefile | 34 ++++++++++++
> spaceman/file.c | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> spaceman/init.c | 117 ++++++++++++++++++++++++++++++++++++++++++
> spaceman/init.h | 23 ++++++++
> spaceman/space.h | 36 +++++++++++++
> 6 files changed, 361 insertions(+), 1 deletion(-)
> create mode 100644 spaceman/Makefile
> create mode 100644 spaceman/file.c
> create mode 100644 spaceman/init.c
> create mode 100644 spaceman/init.h
> create mode 100644 spaceman/space.h
>
>
> diff --git a/Makefile b/Makefile
> index ba87327..72d0044 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -47,7 +47,7 @@ HDR_SUBDIRS = include libxfs
> DLIB_SUBDIRS = libxlog libxcmd libhandle
> LIB_SUBDIRS = libxfs $(DLIB_SUBDIRS)
> TOOL_SUBDIRS = copy db estimate fsck growfs io logprint mkfs quota \
> - mdrestore repair rtcp m4 man doc debian
> + mdrestore repair rtcp m4 man doc debian spaceman
>
> ifneq ("$(PKG_PLATFORM)","darwin")
> TOOL_SUBDIRS += fsr
> @@ -88,6 +88,7 @@ quota: libxcmd
> repair: libxlog libxcmd
> copy: libxlog
> mkfs: libxcmd
> +spaceman: libxcmd
>
> ifeq ($(HAVE_BUILDDEFS), yes)
> include $(BUILDRULES)
> diff --git a/spaceman/Makefile b/spaceman/Makefile
> new file mode 100644
> index 0000000..ff8d23e
> --- /dev/null
> +++ b/spaceman/Makefile
> @@ -0,0 +1,34 @@
> +#
> +# Copyright (c) 2012 Red Hat, Inc. All Rights Reserved.
> +#
> +
> +TOPDIR = ..
> +include $(TOPDIR)/include/builddefs
> +
> +LTCOMMAND = xfs_spaceman
> +HFILES = init.h space.h
> +CFILES = init.c \
> + file.c
> +
> +LLDLIBS = $(LIBXCMD)
> +LTDEPENDENCIES = $(LIBXCMD)
> +LLDFLAGS = -static
> +
> +ifeq ($(ENABLE_READLINE),yes)
> +LLDLIBS += $(LIBREADLINE) $(LIBTERMCAP)
> +endif
> +
> +ifeq ($(ENABLE_EDITLINE),yes)
> +LLDLIBS += $(LIBEDITLINE) $(LIBTERMCAP)
> +endif
> +
> +default: depend $(LTCOMMAND)
> +
> +include $(BUILDRULES)
> +
> +install: default
> + $(INSTALL) -m 755 -d $(PKG_SBIN_DIR)
> + $(LTINSTALL) -m 755 $(LTCOMMAND) $(PKG_SBIN_DIR)
> +install-dev:
> +
> +-include .dep
> diff --git a/spaceman/file.c b/spaceman/file.c
> new file mode 100644
> index 0000000..9356066
> --- /dev/null
> +++ b/spaceman/file.c
> @@ -0,0 +1,149 @@
> +/*
> + * Copyright (c) 2004-2005 Silicon Graphics, Inc.
> + * Copyright (c) 2012 Red Hat, Inc.
> + * All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write the Free Software Foundation,
> + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +#include "libxfs.h"
> +#include <sys/mman.h>
> +#include "command.h"
> +#include "input.h"
> +#include "init.h"
> +#include "space.h"
> +
> +static cmdinfo_t print_cmd;
> +
> +fileio_t *filetable;
> +int filecount;
> +fileio_t *file;
> +
> +static void
> +print_fileio(
> + fileio_t *file,
> + int index,
> + int braces)
> +{
> + printf(_("%c%03d%c %-14s (%s,%s,%s%s%s)\n"),
> + braces? '[' : ' ', index, braces? ']' : ' ', file->name,
> + file->flags & O_SYNC ? _("sync") : _("non-sync"),
> + file->flags & O_DIRECT ? _("direct") : _("non-direct"),
> + file->flags & O_RDONLY ? _("read-only") : _("read-write"),
> + file->flags & O_APPEND ? _(",append-only") : "",
> + file->flags & O_NONBLOCK ? _(",non-block") : "");
I don't think this is working:
# chattr +aS appendonly_sync
# xfs_spaceman -c print appendonly_sync
[000] appendonly_sync (non-sync,non-direct,read-write)
I don't see that file->flags ever gets set.
> +}
> +
> +int
> +filelist_f(void)
> +{
> + int i;
> +
> + for (i = 0; i < filecount; i++)
> + print_fileio(&filetable[i], i, &filetable[i] == file);
> + return 0;
> +}
> +
> +static int
> +print_f(
> + int argc,
> + char **argv)
> +{
> + filelist_f();
> + return 0;
> +}
> +
> +int
> +openfile(
> + char *path,
> + xfs_fsop_geom_t *geom,
> + int flags,
> + mode_t mode)
> +{
> + int fd;
> +
> + fd = open(path, flags, mode);
> + if (fd < 0) {
> + if ((errno == EISDIR) && (flags & O_RDWR)) {
can we even get here w/ flags != 0?
(but anyway, we can open a dir just fine ...)
> + /* make it as if we asked for O_RDONLY & try again */
> + flags &= ~O_RDWR;
> + flags |= O_RDONLY;
> + fd = open(path, flags, mode);
> + if (fd < 0) {
> + perror(path);
> + return -1;
> + }
> + } else {
> + perror(path);
> + return -1;
> + }
> + }
> +
> + if (ioctl(fd, XFS_IOC_FSGEOMETRY, geom) < 0) {
> + perror("XFS_IOC_FSGEOMETRY");
> + close(fd);
> + return -1;
> + }
> + return fd;
> +}
> +
> +int
> +addfile(
> + char *name,
> + int fd,
> + xfs_fsop_geom_t *geometry,
> + int flags)
> +{
> + char *filename;
> +
> + filename = strdup(name);
> + if (!filename) {
> + perror("strdup");
> + close(fd);
> + return -1;
> + }
> +
> + /* Extend the table of currently open files */
> + filetable = (fileio_t *)realloc(filetable, /* growing */
> + ++filecount * sizeof(fileio_t));
> + if (!filetable) {
> + perror("realloc");
> + filecount = 0;
> + free(filename);
> + close(fd);
> + return -1;
> + }
> +
> + /* Finally, make this the new active open file */
> + file = &filetable[filecount - 1];
> + file->fd = fd;
> + file->flags = flags;
> + file->name = filename;
> + file->geom = *geometry;
> + return 0;
> +}
> +
> +void
> +file_init(void)
> +{
> + print_cmd.name = "print";
> + print_cmd.altname = "p";
> + print_cmd.cfunc = print_f;
> + print_cmd.argmin = 0;
> + print_cmd.argmax = 0;
> + print_cmd.flags = CMD_FLAG_ONESHOT;
> + print_cmd.oneline = _("list current open files");
> +
> + add_command(&print_cmd);
> +}
> diff --git a/spaceman/init.c b/spaceman/init.c
> new file mode 100644
> index 0000000..404b183
> --- /dev/null
> +++ b/spaceman/init.c
> @@ -0,0 +1,117 @@
> +/*
> + * Copyright (c) 2012 Red Hat, Inc
> + * All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write the Free Software Foundation,
> + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +#include "libxfs.h"
> +#include "command.h"
> +#include "input.h"
> +#include "init.h"
> +#include "space.h"
> +
> +char *progname;
> +int exitcode;
> +
> +void
> +usage(void)
> +{
> + fprintf(stderr,
> + _("Usage: %s [-c cmd] file\n"),
> + progname);
> + exit(1);
> +}
> +
> +static void
> +init_commands(void)
> +{
> + file_init();
> + help_init();
> + quit_init();
> +}
> +
> +static int
> +init_args_command(
> + int index)
> +{
> + if (index >= filecount)
> + return 0;
> + file = &filetable[index++];
> + return index;
> +}
> +
> +static int
> +init_check_command(
> + const cmdinfo_t *ct)
> +{
> + if (!(ct->flags & CMD_FLAG_ONESHOT))
> + return 0;
> + return 1;
> +}
> +
> +void
> +init(
> + int argc,
> + char **argv)
> +{
> + int c, flags = 0;
flags is 0 ...
> + mode_t mode = 0600;
> + xfs_fsop_geom_t geometry = { 0 };
> +
> + progname = basename(argv[0]);
> + setlocale(LC_ALL, "");
> + bindtextdomain(PACKAGE, LOCALEDIR);
> + textdomain(PACKAGE);
> +
> + while ((c = getopt(argc, argv, "c:V")) != EOF) {
> + switch (c) {
> + case 'c':
> + add_user_command(optarg);
> + break;
> + case 'V':
> + printf(_("%s version %s\n"), progname, VERSION);
> + exit(0);
> + default:
> + usage();
> + }
> + }
> +
> + if (optind == argc)
> + usage();
> +
> + while (optind < argc) {
> + if ((c = openfile(argv[optind], &geometry, flags, mode)) < 0)
openfile with flags ...
> + exit(1);
> + if (!platform_test_xfs_fd(c))
> + printf(_("Not an XFS filesystem!\n"));
file? filesystem?
> + if (addfile(argv[optind], c, &geometry, flags) < 0)
addfile with flags ... what's flags for? it's always 0.
> + exit(1);
> + optind++;
> + }
> +
> + init_commands();
> + add_command_iterator(init_args_command);
> + add_check_command(init_check_command);
> +}
> +
> +int
> +main(
> + int argc,
> + char **argv)
> +{
> + init(argc, argv);
> + command_loop();
> + return exitcode;
> +}
> diff --git a/spaceman/init.h b/spaceman/init.h
> new file mode 100644
> index 0000000..165e4f5
> --- /dev/null
> +++ b/spaceman/init.h
> @@ -0,0 +1,23 @@
> +/*
> + * Copyright (c) 2012 Red Hat, Inc.
> + * All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write the Free Software Foundation,
> + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +extern char *progname;
> +extern int exitcode;
> +
> +#define min(a,b) (((a)<(b))?(a):(b))
> +#define max(a,b) (((a)>(b))?(a):(b))
> diff --git a/spaceman/space.h b/spaceman/space.h
> new file mode 100644
> index 0000000..6e1bc52
> --- /dev/null
> +++ b/spaceman/space.h
> @@ -0,0 +1,36 @@
> +/*
> + * Copyright (c) 2012 Red Hat, Inc.
> + * All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write the Free Software Foundation,
> + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +typedef struct fileio {
> + int fd; /* open file descriptor */
> + int flags; /* flags describing file state */
> + char *name; /* file name at time of open */
> + xfs_fsop_geom_t geom; /* XFS filesystem geometry */
> +} fileio_t;
> +
> +extern fileio_t *filetable; /* open file table */
> +extern int filecount; /* number of open files */
> +extern fileio_t *file; /* active file in file table */
> +extern int filelist_f(void);
> +
> +extern int openfile(char *, xfs_fsop_geom_t *, int, mode_t);
> +extern int addfile(char *, int , xfs_fsop_geom_t *, int);
> +
> +extern void file_init(void);
> +extern void help_init(void);
> +extern void quit_init(void);
>
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