From: Karel Zak <kzak@redhat.com>
To: Sami Kerola <kerolasa@iki.fi>
Cc: util-linux@vger.kernel.org
Subject: Re: [PATCH 05/12] script, hwclock: check file exist with access(3) rather than stat(3)
Date: Mon, 9 Nov 2015 09:43:29 +0100 [thread overview]
Message-ID: <20151109084329.GN19508@ws.net.home> (raw)
In-Reply-To: <1446319284-24778-6-git-send-email-kerolasa@iki.fi>
On Sat, Oct 31, 2015 at 07:21:17PM +0000, Sami Kerola wrote:
> Signed-off-by: Sami Kerola <kerolasa@iki.fi>
> ---
> sys-utils/hwclock.c | 5 +----
> term-utils/script.c | 3 +--
> 2 files changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/sys-utils/hwclock.c b/sys-utils/hwclock.c
> index 4b201d7..0d11061 100644
> --- a/sys-utils/hwclock.c
> +++ b/sys-utils/hwclock.c
> @@ -258,15 +258,12 @@ hw_clock_is_utc(const bool utc, const bool local_opt,
> static int read_adjtime(struct adjtime *adjtime_p)
> {
> FILE *adjfile;
> - int rc; /* local return code */
> - struct stat statbuf; /* We don't even use the contents of this. */
> char line1[81]; /* String: first line of adjtime file */
> char line2[81]; /* String: second line of adjtime file */
> char line3[81]; /* String: third line of adjtime file */
> long timeval;
>
> - rc = stat(adj_file_name, &statbuf);
> - if (rc < 0 && errno == ENOENT) {
> + if (access(adj_file_name, R_OK) != 0) {
Not sure, but I remember reports from people who use suid hwclock.
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
next prev parent reply other threads:[~2015-11-09 8:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-31 19:21 [PATCH 00/12] pull: race fixes Sami Kerola
2015-10-31 19:21 ` [PATCH 01/12] login: fix stat(2) race Sami Kerola
2015-10-31 19:21 ` [PATCH 02/12] swapon: fix stat(3) and open(3) race Sami Kerola
2015-10-31 19:21 ` [PATCH 03/12] fsck: retire stat(3) when access(3) does better job Sami Kerola
2015-10-31 19:21 ` [PATCH 04/12] agetty: fix chown(3), chmod(3) and open(3) race Sami Kerola
2015-11-09 9:01 ` Karel Zak
2015-10-31 19:21 ` [PATCH 05/12] script, hwclock: check file exist with access(3) rather than stat(3) Sami Kerola
2015-11-09 8:43 ` Karel Zak [this message]
2015-10-31 19:21 ` [PATCH 06/12] lib/fileutils: add is_same_inode() check Sami Kerola
2015-11-09 8:54 ` Karel Zak
2015-10-31 19:21 ` [PATCH 07/12] include/blkdev: add open_blkdev_or_file() function Sami Kerola
2015-11-09 8:51 ` Karel Zak
2015-11-22 21:27 ` Sami Kerola
2015-10-31 19:21 ` [PATCH 08/12] mkfs.bfs: fix block device open race Sami Kerola
2015-11-09 8:48 ` Karel Zak
2015-11-22 21:24 ` Sami Kerola
2015-10-31 19:21 ` [PATCH 09/12] mkfs.minix: " Sami Kerola
2015-10-31 19:21 ` [PATCH 10/12] mkswap: " Sami Kerola
2015-10-31 19:21 ` [PATCH 11/12] mesg: fix multiple races Sami Kerola
2015-10-31 19:21 ` [PATCH 12/12] fdformat: fix block device open race Sami Kerola
2015-11-09 8:58 ` [PATCH 00/12] pull: race fixes Karel Zak
2015-12-02 9:54 ` Karel Zak
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