- make append_option and multiconvert static.

[oweals/busybox.git] / coreutils / who.c

diff --git a/coreutils/who.c b/coreutils/who.c
index 1156ba20ff1a58074f55bae0693996b8cff764e2..0cb74313e5e3a265ca5460ab30f6720e732ff985 100644 (file)
--- a/coreutils/who.c
+++ b/coreutils/who.c
@@ -14,70 +14,52 @@
  *----------------------------------------------------------------------
  */
 
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <utmp.h>
 #include <sys/stat.h>
-#include <errno.h>
-#include <string.h>
 #include <time.h>
 #include "busybox.h"
 
-int who_main(int argc, char **argv)
+static const char * idle_string (time_t t)
 {
-    struct utmp *ut;
-    struct stat st;
-    int         devlen, len;
-    time_t      now, idle;
-
-    if (argc > 1)
-       bb_show_usage();
-
-    setutent();
-    devlen = sizeof("/dev/") - 1;
-    printf("USER       TTY      IDLE      FROM           HOST\n");
-
-    while ((ut = getutent()) != NULL) {
-       char name[40];
-
-       if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) {
-           len = strlen(ut->ut_line);
-           if (ut->ut_line[0] == '/') {
-              strncpy(name, ut->ut_line, len);
-              name[len] = '\0';
-              strcpy(ut->ut_line, ut->ut_line + devlen);
-           } else {
-              strcpy(name, "/dev/");
-              strncpy(name+devlen, ut->ut_line, len);
-              name[devlen+len] = '\0';
-           }
-
-           printf("%-10s %-8s ", ut->ut_user, ut->ut_line);
-
-           if (stat(name, &st) == 0) {
-               now = time(NULL);
-               idle = now -  st.st_atime;
+       static char str[6];
+       
+       time_t s = time(NULL) - t;
 
-               if (idle < 60)
-                   printf("00:00m    ");
-               else if (idle < (60 * 60))
-                   printf("00:%02dm    ", (int)(idle / 60));
-               else if (idle < (24 * 60 * 60))
-                   printf("%02d:%02dm    ", (int)(idle / (60 * 60)),
-                          (int)(idle % (60 * 60)) / 60);
-               else if (idle < (24 * 60 * 60 * 365))
-                   printf("%03ddays   ", (int)(idle / (24 * 60 * 60)));
-               else
-                   printf("%02dyears   ", (int) (idle / (24 * 60 * 60 * 365)));
-           } else
-               printf("%-8s  ", "?");
-
-           printf("%-12.12s   %s\n", ctime((time_t*)&(ut->ut_tv.tv_sec)) + 4, ut->ut_host);
+       if (s < 60)
+               return ".";
+       if (s < (24 * 60 * 60)) {
+               sprintf (str, "%02d:%02d",
+                               (int) (s / (60 * 60)),
+                               (int) ((s % (60 * 60)) / 60));
+               return (const char *) str;
        }
-    }
-    endutent();
+       return "old";
+}
 
-    return 0;
+int who_main(int argc, char **argv)
+{
+       struct utmp *ut;
+       struct stat st;
+       char *name;
+       
+       if (argc > 1) {
+               bb_show_usage();
+       }
+       
+       setutent();
+       printf("USER       TTY      IDLE      TIME           HOST\n");
+       while ((ut = getutent()) != NULL) {
+               if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) {
+                       /* ut->ut_line is device name of tty - "/dev/" */
+                       name = concat_path_file("/dev", ut->ut_line);
+                       printf("%-10s %-8s %-8s  %-12.12s   %s\n", ut->ut_user, ut->ut_line,
+                                                                       (stat(name, &st)) ?  "?" : idle_string(st.st_atime),
+                                                                       ctime((time_t*)&(ut->ut_tv.tv_sec)) + 4, ut->ut_host);
+                       free(name);
+               }
+       }
+       endutent();
+       return 0;
 }