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

[Sunil Mushran]

How is this different from the stat tool?

We want this tool to provide info that may not be available
to non privileged users.

So nak for now.

Tristan Ye wrote:
> 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);
>