It might be useful for security auditing purposes list all possible
mount flags/options including default set which are normally not listed.
Given that we already call statvfs to retrieve i.e. filesystem size,
add an extra column to list all possible f_flags, default or not.
Signed-off-by: Roberto Bergantinos Corpas <rbergant@xxxxxxxxxx>
---
misc-utils/findmnt.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/misc-utils/findmnt.c b/misc-utils/findmnt.c
index 43b4dc7d6..da9f42020 100644
--- a/misc-utils/findmnt.c
+++ b/misc-utils/findmnt.c
@@ -56,6 +56,7 @@ enum {
COL_FSTYPE,
COL_OPTIONS,
COL_VFS_OPTIONS,
+ COL_MNT_OPTIONS,
COL_FS_OPTIONS,
COL_LABEL,
COL_UUID,
@@ -101,6 +102,7 @@ static struct colinfo infos[] = {
[COL_FSTYPE] = { "FSTYPE", 0.10, SCOLS_FL_TRUNC, N_("filesystem type") },
[COL_OPTIONS] = { "OPTIONS", 0.10, SCOLS_FL_TRUNC, N_("all mount options") },
[COL_VFS_OPTIONS] = { "VFS-OPTIONS", 0.20, SCOLS_FL_TRUNC, N_("VFS specific mount options") },
+ [COL_MNT_OPTIONS] = { "MNT-OPTIONS", 0.20, SCOLS_FL_TRUNC, N_("All statvfs f_flags from mount") },
[COL_FS_OPTIONS] = { "FS-OPTIONS", 0.10, SCOLS_FL_TRUNC, N_("FS specific mount options") },
[COL_LABEL] = { "LABEL", 0.10, 0, N_("filesystem label") },
[COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") },
@@ -490,6 +492,26 @@ static char *get_vfs_attr(struct libmnt_fs *fs, int sizetype)
(double)(buf.f_blocks - buf.f_bfree) /
buf.f_blocks * 100);
return sizestr;
+ case COL_MNT_OPTIONS:
+ if (mnt_fs_get_vfs_options(fs)) {
+ sizestr = xstrdup(mnt_fs_get_vfs_options(fs));
+ if (!(buf.f_flag & MS_NOEXEC))
+ mnt_optstr_append_option(&sizestr, "exec", NULL);
+ if (!(buf.f_flag & MS_NOSUID))
+ mnt_optstr_append_option(&sizestr, "suid", NULL);
+ if (!(buf.f_flag & MS_NODEV))
+ mnt_optstr_append_option(&sizestr, "dev", NULL);
+ if (!(buf.f_flag & MS_SYNCHRONOUS))
+ mnt_optstr_append_option(&sizestr, "async", NULL);
+ if (!(buf.f_flag & MS_MANDLOCK))
+ mnt_optstr_append_option(&sizestr, "nomand", NULL);
+ if (!(buf.f_flag & MS_NOATIME))
+ mnt_optstr_append_option(&sizestr, "atime", NULL);
+ if (!(buf.f_flag & MS_NODIRATIME))
+ mnt_optstr_append_option(&sizestr, "diratime", NULL);
+ return sizestr;
+ } else
+ return NULL;
}
if (!vfs_attr)
@@ -585,6 +607,7 @@ static char *get_data(struct libmnt_fs *fs, int num)
case COL_AVAIL:
case COL_USED:
case COL_USEPERC:
+ case COL_MNT_OPTIONS:
str = get_vfs_attr(fs, col_id);
break;
case COL_FSROOT:
--
2.21.0
