From: Sami Kerola <kerolasa@iki.fi>
To: util-linux@vger.kernel.org
Cc: Sami Kerola <kerolasa@iki.fi>
Subject: [PATCH 01/12] login: fix stat(2) race
Date: Sat, 31 Oct 2015 19:21:13 +0000 [thread overview]
Message-ID: <1446319284-24778-2-git-send-email-kerolasa@iki.fi> (raw)
In-Reply-To: <1446319284-24778-1-git-send-email-kerolasa@iki.fi>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
login-utils/login.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/login-utils/login.c b/login-utils/login.c
index 0e45de7..b708467 100644
--- a/login-utils/login.c
+++ b/login-utils/login.c
@@ -256,13 +256,11 @@ static void motd(void)
struct stat st;
int fd;
- if (stat(motdfile, &st) || !st.st_size)
- continue;
fd = open(motdfile, O_RDONLY, 0);
if (fd < 0)
continue;
-
- sendfile(fileno(stdout), fd, NULL, st.st_size);
+ if (!fstat(fd, &st) && st.st_size)
+ sendfile(fileno(stdout), fd, NULL, st.st_size);
close(fd);
}
--
2.6.2
next prev parent reply other threads:[~2015-10-31 19:21 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 ` Sami Kerola [this message]
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
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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