From: Sami Kerola <kerolasa@iki.fi>
To: util-linux@vger.kernel.org
Cc: kerolasa@iki.fi
Subject: [PATCH 02/19] login: stop using MAXHOSTNAMELEN
Date: Sun, 14 Oct 2012 21:20:53 +0100 [thread overview]
Message-ID: <1350246070-10544-3-git-send-email-kerolasa@iki.fi> (raw)
In-Reply-To: <1350246070-10544-1-git-send-email-kerolasa@iki.fi>
Use the sysconf(_SC_HOST_NAME_MAX) to determine maximum length of a
hostname.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
login-utils/login.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/login-utils/login.c b/login-utils/login.c
index 8ae5266..8cf6865 100644
--- a/login-utils/login.c
+++ b/login-utils/login.c
@@ -109,7 +109,7 @@ struct login_context {
char vcsan[VCS_PATH_MAX];
#endif
- char thishost[MAXHOSTNAMELEN + 1]; /* this machine */
+ char *thishost; /* this machine */
char *thisdomain; /* this machine domain */
char *hostname; /* remote machine */
char hostaddress[16]; /* remote address */
@@ -209,13 +209,13 @@ static void __attribute__ ((__noreturn__)) sleepexit(int eval)
static const char *get_thishost(struct login_context *cxt, const char **domain)
{
- if (!*cxt->thishost) {
- if (gethostname(cxt->thishost, sizeof(cxt->thishost))) {
+ if (!cxt->thishost) {
+ cxt->thishost = xmalloc(sizeof(char) * (sysconf(_SC_HOST_NAME_MAX) + 1));
+ if (gethostname(cxt->thishost, sysconf(_SC_HOST_NAME_MAX))) {
if (domain)
*domain = NULL;
return NULL;
}
- cxt->thishost[sizeof(cxt->thishost) -1] = '\0';
cxt->thisdomain = strchr(cxt->thishost, '.');
if (cxt->thisdomain)
*cxt->thisdomain++ = '\0';
--
1.7.12.2
next prev parent reply other threads:[~2012-10-14 20:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 20:20 [PATCH 00/19] compliancy fixes Sami Kerola
2012-10-14 20:20 ` [PATCH 01/19] last: stop using MAXHOSTNAMELEN Sami Kerola
2012-10-15 1:46 ` Mike Frysinger
2012-10-14 20:20 ` Sami Kerola [this message]
2012-10-14 20:20 ` [PATCH 03/19] write: " Sami Kerola
2012-10-15 2:12 ` Mike Frysinger
[not found] ` <20121015152558.GK18377@x2.net.home>
2012-10-18 20:06 ` Sami Kerola
2012-10-22 6:01 ` Mike Frysinger
2012-10-22 8:06 ` Karel Zak
2012-10-22 8:09 ` Karel Zak
2012-10-22 20:03 ` Mike Frysinger
2012-10-22 20:22 ` Karel Zak
2012-10-14 20:20 ` [PATCH 04/19] agetty: " Sami Kerola
2012-10-14 20:20 ` [PATCH 05/19] c.h: remove unnecessary MAXHOSTNAMELEN fallback definition Sami Kerola
2012-10-14 20:20 ` [PATCH 06/19] docs: add line breaks to whereis.1 Sami Kerola
2012-10-14 20:20 ` [PATCH 07/19] sd-daemon: fix cppcheck warnings Sami Kerola
2012-10-14 22:10 ` Dave Reisner
2012-10-15 8:32 ` Sami Kerola
2012-10-14 20:20 ` [PATCH 08/19] libmount: replace usleep with nanosleep Sami Kerola
2012-10-15 2:14 ` Mike Frysinger
2012-10-14 20:21 ` [PATCH 09/19] include/all-io: " Sami Kerola
2012-10-14 20:21 ` [PATCH 10/19] hwclock: " Sami Kerola
2012-10-14 20:21 ` [PATCH 11/19] rtcwake: " Sami Kerola
2012-10-14 20:21 ` [PATCH 12/19] agetty: " Sami Kerola
2012-10-14 20:21 ` [PATCH 13/19] tailf: " Sami Kerola
2012-10-14 20:21 ` [PATCH 14/19] include/usleep: remove remaining references to usleep Sami Kerola
2012-10-14 20:21 ` [PATCH 15/19] libmount, eject: replace index() and rindex() with strrch() or strrchr() Sami Kerola
2012-10-15 2:14 ` Mike Frysinger
2012-10-14 20:21 ` [PATCH 16/19] logger: replace gethostbyname() with getaddrinfo() Sami Kerola
2012-10-14 20:21 ` [PATCH 17/19] agetty: " Sami Kerola
2012-10-14 20:21 ` [PATCH 18/19] build-sys: remove gethostbyname() check Sami Kerola
2012-10-14 20:21 ` [PATCH 19/19] fsck.cramfs: replace utime() with utimensat() Sami Kerola
2012-10-15 2:17 ` Mike Frysinger
2012-10-15 8:36 ` Sami Kerola
2012-10-15 17:39 ` Mike Frysinger
2012-10-22 9:07 ` [PATCH 00/19] compliancy fixes Karel Zak
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