[Ocfs2-tools-devel] [PATCH 13/19] Ocfs2-tools: Add running codes for '--file-statistics' in operation.c

[Tristan Ye]

Task of file statistics will be partly implemented by fiemap, and partly
from standard stat().

Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
---
 o2info/operations.c |  109 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 109 insertions(+), 0 deletions(-)

diff --git a/o2info/operations.c b/o2info/operations.c
index c4fa7fc..21504d6 100644
--- a/o2info/operations.c
+++ b/o2info/operations.c
@@ -553,3 +553,112 @@ static int usage_run(struct o2info_operation *op,
 DEFINE_O2INFO_OP(usage,
 		 usage_run,
 		 NULL);
+
+static int filestat_run(struct o2info_operation *op,
+			struct o2info_method *om,
+			void *arg)
+{
+	int rc = 0;
+	uint16_t perm;
+	struct stat st;
+
+	char *path = NULL;
+	char *filetype = NULL, *h_perm = NULL;
+	char *uname = NULL, *gname = NULL;
+	char *ah_time = NULL, *ch_time = NULL, *mh_time = NULL;
+
+	static struct o2info_fiemap_stats ofs;
+
+	rc = lstat(om->om_path, &st);
+	if (rc < 0) {
+		rc = errno;
+		o2i_error(op, "stat error: %s\n", strerror(rc));
+		goto out;
+	}
+
+	rc = o2info_get_human_path(st.st_mode, om->om_path, &path);
+	if (rc)
+		goto out;
+
+	rc = o2info_get_filetype(st, &filetype);
+	if (rc)
+		goto out;
+
+	rc = o2info_uid2name(st.st_uid, &uname);
+	if (rc)
+		goto out;
+
+	rc = o2info_gid2name(st.st_gid, &gname);
+	if (rc)
+		goto out;
+
+	rc = o2info_get_human_permission(st.st_mode, &perm, &h_perm);
+	if (rc)
+		goto out;
+
+	rc = get_fiemap_stats(op, om, &ofs);
+	if (rc)
+		goto out;
+
+	if (!ofs.blocksize)
+		ofs.blocksize = st.st_blksize;
+
+	fprintf(stdout, "  File: %s\n", path);
+	fprintf(stdout, "  Size: %-10lu\tBlocks: %-10u IO Block: %-6u %s\n",
+		st.st_size, st.st_blocks, ofs.blocksize, filetype);
+	 if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode))
+		fprintf(stdout, "Device: %xh/%dd\tInode: %-10i  Links: %-5u"
+			" Device type: %u,%u\n", st.st_dev, st.st_dev,
+			st.st_ino, st.st_nlink,
+			st.st_dev >> 16UL, st.st_dev & 0x0000FFFF);
+	else
+		fprintf(stdout, "Device: %xh/%dd\tInode: %-10i  Links: %u\n",
+			st.st_dev, st.st_dev, st.st_ino, st.st_nlink);
+	fprintf(stdout, " Frag%: %-10.2f\tClusters: %-8u Extents: "
+		"%-6lu Score: %.0f\n", ofs.frag, ofs.clusters,
+		ofs.num_extents, ofs.score);
+	fprintf(stdout, "Shared: %-10u\tUnwritten: %-7u Holes: %-8u "
+		"Xattr: %u\n", ofs.shared, ofs.unwrittens,
+		ofs.holes, ofs.xattr);
+	fprintf(stdout, "Access: (%04o/%10s)  Uid: (%5u/%8s)   "
+		"Gid: (%5u/%8s)\n", perm, h_perm, st.st_uid,
+		uname, st.st_gid, gname);
+
+	rc = o2info_get_human_time(&ah_time, o2info_get_stat_atime(&st));
+	if (rc)
+		goto out;
+	rc = o2info_get_human_time(&mh_time, o2info_get_stat_mtime(&st));
+	if (rc)
+		goto out;
+	rc = o2info_get_human_time(&ch_time, o2info_get_stat_ctime(&st));
+	if (rc)
+		goto out;
+
+	fprintf(stdout, "Access: %s\n", ah_time);
+	fprintf(stdout, "Modify: %s\n", mh_time);
+	fprintf(stdout, "Change: %s\n", ch_time);
+
+out:
+	if (path)
+		ocfs2_free(&path);
+	if (filetype)
+		ocfs2_free(&filetype);
+	if (uname)
+		ocfs2_free(&uname);
+	if (gname)
+		ocfs2_free(&gname);
+	if (h_perm)
+		ocfs2_free(&h_perm);
+	if (ah_time)
+		ocfs2_free(&ah_time);
+	if (mh_time)
+		ocfs2_free(&mh_time);
+	if (ch_time)
+		ocfs2_free(&ch_time);
+
+	return rc;
+}
+
+DEFINE_O2INFO_OP(filestat,
+		 filestat_run,
+		 NULL);
-- 
1.5.5