write: stop using MAXHOSTNAMELEN

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/term-utils/write.c b/term-utils/write.c
index 6c746b42c7ac144a0277d474dc20a4e528351204..03560065c4de373bcb18bd8d59480ea54f0bc3de 100644 (file)
--- a/term-utils/write.c
+++ b/term-utils/write.c
@@ -63,6 +63,7 @@
 #include "carefulputc.h"
 #include "closestream.h"
 #include "nls.h"
+#include "xalloc.h"
 
 static void __attribute__ ((__noreturn__)) usage(FILE * out);
 void search_utmp(char *, char *, char *, uid_t);
@@ -312,7 +313,7 @@ void do_write(char *tty, char *mytty, uid_t myuid)
        char *login, *pwuid, *nows;
        struct passwd *pwd;
        time_t now;
-       char path[PATH_MAX], host[MAXHOSTNAMELEN], line[512];
+       char path[PATH_MAX], *host, line[512];
 
        /* Determine our login name(s) before the we reopen() stdout */
        if ((pwd = getpwuid(myuid)) != NULL)
@@ -332,8 +333,10 @@ void do_write(char *tty, char *mytty, uid_t myuid)
        signal(SIGHUP, done);
 
        /* print greeting */
-       if (gethostname(host, sizeof(host)) < 0)
-               strcpy(host, "???");
+       host = xgethostname();
+       if (!host)
+               host = xstrdup("???");
+
        now = time((time_t *) NULL);
        nows = ctime(&now);
        nows[16] = '\0';
@@ -344,6 +347,7 @@ void do_write(char *tty, char *mytty, uid_t myuid)
        else
                printf(_("Message from %s@%s on %s at %s ..."),
                       login, host, mytty, nows + 11);
+       free(host);
        printf("\r\n");
 
        while (fgets(line, sizeof(line), stdin) != NULL)