Use the sysconf(_SC_HOST_NAME_MAX) to determine maximum length of a
hostname.
Signed-off-by: Sami Kerola <kerolasa@xxxxxx>
---
login-utils/last.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/login-utils/last.c b/login-utils/last.c
index 77a890a..a3d5a85 100644
--- a/login-utils/last.c
+++ b/login-utils/last.c
@@ -418,22 +418,19 @@ addtty(char *ttyname) {
*/
static void
hostconv(char *arg) {
- static int first = 1;
- static char *hostdot,
- name[MAXHOSTNAMELEN];
- char *argdot;
+ static char *hostdot;
+ static char *argdot;
+ static char *name;
if (!(argdot = strchr(arg, '.')))
return;
- if (first) {
- first = 0;
- if (gethostname(name, sizeof(name)))
- err(EXIT_FAILURE, _("gethostname failed"));
-
- hostdot = strchr(name, '.');
- }
+ name = xmalloc(sizeof(char) * (sysconf(_SC_HOST_NAME_MAX) + 1));
+ if (gethostname(name, sysconf(_SC_HOST_NAME_MAX)))
+ err(EXIT_FAILURE, _("gethostname failed"));
+ hostdot = strchr(name, '.');
if (hostdot && !strcmp(hostdot, argdot))
*argdot = '\0';
+ free(name);
}
/*
--
1.7.12.2
--
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