From: "Wayne R. Roth" <wayneroth42@xxxxxxxxx>
Signed-off-by: Wayne R. Roth <wayneroth42@xxxxxxxxx>
---
disk-utils/mkswap.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/disk-utils/mkswap.c b/disk-utils/mkswap.c
index c559e60..22999da 100644
--- a/disk-utils/mkswap.c
+++ b/disk-utils/mkswap.c
@@ -344,7 +344,7 @@ static void write_header_to_device(struct mkswap_control *ctl)
int main(int argc, char **argv)
{
struct mkswap_control ctl = { .fd = -1 };
- int c;
+ int c, permMask;
uint64_t sz;
int version = SWAP_VERSION;
char *block_count = NULL, *strsz = NULL;
@@ -464,6 +464,15 @@ int main(int argc, char **argv)
ctl.devname);
open_device(&ctl);
+ permMask = S_ISBLK(ctl.devstat.st_mode) ? 07007 : 07077;
+ if ((ctl.devstat.st_mode & permMask) != 0)
+ warnx(_("%s: insecure permissions %04o, %04o suggested."),
+ ctl.devname, ctl.devstat.st_mode & 07777,
+ ~permMask & 0666);
+ if (getuid() == 0 && S_ISREG(ctl.devstat.st_mode) && ctl.devstat.st_uid != 0)
+ warnx(_("%s: insecure file owner %d, 0 (root) suggested."),
+ ctl.devname, ctl.devstat.st_uid);
+
if (ctl.check)
check_blocks(&ctl);
--
1.8.3.1
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