[Libguestfs] [PATCH V2] NEW API: add new api xfs_info
Wanlong Gao
gaowanlong at cn.fujitsu.com
Thu Jul 12 03:15:57 UTC 2012
Add xfs_info to show the geometry of the xfs filesystem.
Signed-off-by: Wanlong Gao <gaowanlong at cn.fujitsu.com>
---
Hi Rich,
This is the v2 version, please help reviewing.
Formated the output, but seems that there's also
something wrong. And I'll add self test in next
version.
Thanks,
Wanlong Gao
daemon/Makefile.am | 1 +
daemon/xfs.c | 228 +++++++++++++++++++++++++++++++++++++++++
generator/generator_actions.ml | 6 ++
po/POTFILES | 1 +
src/MAX_PROC_NR | 2 +-
5 files changed, 237 insertions(+), 1 deletion(-)
create mode 100644 daemon/xfs.c
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 9e2a633..afe8874 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -165,6 +165,7 @@ guestfsd_SOURCES = \
utimens.c \
wc.c \
xattr.c \
+ xfs.c \
zero.c \
zerofree.c
guestfsd_LDADD = \
diff --git a/daemon/xfs.c b/daemon/xfs.c
new file mode 100644
index 0000000..ea3782b
--- /dev/null
+++ b/daemon/xfs.c
@@ -0,0 +1,228 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2012 Fujitsu Limited.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will 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 to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "guestfs_protocol.h"
+#include "daemon.h"
+#include "c-ctype.h"
+#include "actions.h"
+
+int
+optgroup_xfs_available (void)
+{
+ return prog_exists ("mkfs.xfs");
+}
+
+char **
+do_xfs_info (const char *path)
+{
+ int r;
+ int i, j;
+ char *buf;
+ char *out = NULL, *err = NULL;
+ char **lines = NULL;
+ char *line = NULL, *p = NULL, *s = NULL;
+ char strbuf[BUFSIZ];
+
+ DECLARE_STRINGSBUF (ret);
+
+ if (do_is_dir (path)) {
+ buf = sysroot_path (path);
+ if (!buf) {
+ reply_with_perror ("malloc");
+ return NULL;
+ }
+ } else {
+ buf = strdup(path);
+ if (!buf) {
+ reply_with_perror ("strdup");
+ return NULL;
+ }
+ }
+
+ r = command (&out, &err, "xfs_info", buf, NULL);
+ free (buf);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ goto error;
+ }
+
+ lines = split_lines (out);
+ if (lines == NULL)
+ goto error;
+
+ const char *md[] = {"meta-data", "isize", "agcount", "agsize",
+ "sectsz", "attr", NULL};
+ const char *data[] = {"data", "bsize", "blocks", "imaxpct",
+ "sunit", "swidth", NULL};
+ const char *name[] = {"naming", "bsize", "ascii-ci", NULL};
+ const char *log[] = {"log", "bsize", "blocks", "version",
+ "sectsz", "sunit", "lazy-count", NULL};
+ const char *rt[] = {"realtime", "extsz", "blocks", "rtextents", NULL};
+
+ for (j = 0; j < 2; j++) {
+ line = lines[j];
+ if (!line)
+ goto error;
+ s = line;
+ for (i = 0; md[i] != NULL; i++) {
+ p = strstr(s, md[i]);
+ if (p) {
+ while (*p != '=') p++;
+ p++;
+ s = p;
+ while (*s != ' ' && *s != ',') s++;
+ *s = '\0';
+ s++;
+ if (i == 0) {
+ if (add_string (&ret, md[i]) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ } else {
+ sprintf (strbuf, "%s.%s", md[0], md[i]);
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ }
+ }
+ }
+ }
+
+ for (j = 2; j < 4; j++) {
+ line = lines[j];
+ if (!line)
+ goto error;
+ s = line;
+ for (i = 1; data[i] != NULL; i++) {
+ p = strstr(s, data[i]);
+ if (p) {
+ while (*p != '=') p++;
+ p++;
+ s = p;
+ while (*s != ' ' && *s != ',') s++;
+ *s = '\0';
+ s++;
+ sprintf(strbuf, "%s.%s", data[0], data[i]);
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ }
+ }
+ }
+
+ line = lines[4];
+ if (!line)
+ goto error;
+ s = line;
+ for (i = 0; name[i] != NULL; i++) {
+ p = strstr(s, name[i]);
+ if (p) {
+ while (*p != '=') p++;
+ p++;
+ if (i == 0) {
+ while (*p != ' ') p++; p++;
+ }
+ s = p;
+ while (*s != ' ' && *s != ',') s++;
+ *s = '\0';
+ s++;
+ if (i == 0) {
+ sprintf(strbuf, "%s.%s", name[i], "version");
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ } else {
+ sprintf(strbuf, "%s.%s", name[0], name[i]);
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ }
+ }
+ }
+
+
+ for (j = 5; j < 7; j++) {
+ line = lines[j];
+ if (!line)
+ goto error;
+ s = line;
+ for (i = 0; log[i] != NULL; i++) {
+ p = strstr(s, log[i]);
+ if (p) {
+ while (*p != '=') p++;
+ p++;
+ s = p;
+ while (*s != ' ' && *s != ',') s++;
+ *s = '\0';
+ s++;
+ if (i == 0) {
+ if (add_string (&ret, log[i]) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ } else {
+ sprintf(strbuf, "%s.%s", log[0], log[i]);
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ }
+ }
+ }
+ }
+
+
+ line = lines[7];
+ if (!line)
+ goto error;
+ s = line;
+ for (i = 0; rt[i] != NULL; i++) {
+ p = strstr(s, rt[i]);
+ if (p) {
+ while (*p != '=') p++;
+ p++;
+ s = p;
+ while (*s != ' ' && *s != ',') s++;
+ *s = '\0';
+ s++;
+ if (i == 0) {
+ if (add_string (&ret, rt[i]) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ } else {
+ sprintf(strbuf, "%s.%s", rt[0], rt[i]);
+ if (add_string (&ret, strbuf) == -1 ||
+ add_string (&ret, p) == -1) goto error;
+ }
+ }
+ }
+
+ free (out);
+ free (err);
+ free_strings (lines);
+
+ if (end_stringsbuf (&ret) == -1)
+ return NULL;
+
+ return ret.argv;
+
+error:
+ free (out);
+ free (err);
+ free_strings (lines);
+ if (ret.argv != NULL)
+ free_stringslen (ret.argv, ret.size);
+ return NULL;
+}
diff --git a/generator/generator_actions.ml b/generator/generator_actions.ml
index 5baa9b2..e4cbee0 100644
--- a/generator/generator_actions.ml
+++ b/generator/generator_actions.ml
@@ -7374,6 +7374,12 @@ be returned if you called C<guestfs_list_devices>.
To find out the maximum number of devices that could be added,
call C<guestfs_max_disks>.");
+ ("xfs_info", (RHashtable "info", [String "path"], []), 337, [Optional "xfs"],
+ [],
+ "print out the geometry of the filesystem",
+ "\
+Thie function can print out the geometry of an mounted XFS filesystem.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
diff --git a/po/POTFILES b/po/POTFILES
index 747b341..8217314 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -84,6 +84,7 @@ daemon/upload.c
daemon/utimens.c
daemon/wc.c
daemon/xattr.c
+daemon/xfs.c
daemon/zero.c
daemon/zerofree.c
df/df.c
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index e64f24d..f59a90f 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-336
+337
--
1.7.11.1.165.g299666c
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