dumpleases: new option -d to show time in seconds

function                                             old     new   delta
dumpleases_main                                      493     534     +41
static.dumpleases_longopts                            31      41     +10
packed_usage                                       30777   30752     -25
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 51/-25)             Total: 26 bytes

Signed-off-by: Isaac Dunham <ibid.ag@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 19 insertions, 5 deletions

diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 64cd73ec7..f68e499e7 100644
--- a/networking/udhcp/dumpleases.c
+++ b/networking/udhcp/dumpleases.c
@@ -4,18 +4,20 @@
  */
 
 //usage:#define dumpleases_trivial_usage
-//usage:       "[-r|-a] [-f LEASEFILE]"
+//usage:       "[-r|-a] [-d] [-f LEASEFILE]"
 //usage:#define dumpleases_full_usage "\n\n"
 //usage:       "Display DHCP leases granted by udhcpd\n"
 //usage:        IF_LONG_OPTS(
 //usage:     "\n        -f,--file=FILE  Lease file"
 //usage:     "\n        -r,--remaining  Show remaining time"
 //usage:     "\n        -a,--absolute   Show expiration time"
+//usage:     "\n        -d,--decimal    Show time in seconds"
 //usage:        )
 //usage:        IF_NOT_LONG_OPTS(
 //usage:     "\n        -f FILE Lease file"
 //usage:     "\n        -r      Show remaining time"
 //usage:     "\n        -a      Show expiration time"
+//usage:     "\n        -d      Show time in seconds"
 //usage:        )
 
 #include "common.h"
@@ -28,21 +30,22 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
         int fd;
         int i;
         unsigned opt;
-        int64_t written_at, curr, expires_abs;
+        int64_t written_at, curr;
         const char *file = LEASES_FILE;
         struct dyn_lease lease;
-        struct in_addr addr;
 
         enum {
                 OPT_a = 0x1, // -a
                 OPT_r = 0x2, // -r
                 OPT_f = 0x4, // -f
+                OPT_d = 0x8, // -d
         };
 #if ENABLE_LONG_OPTS
         static const char dumpleases_longopts[] ALIGN1 =
                 "absolute\0"  No_argument       "a"
                 "remaining\0" No_argument       "r"
                 "file\0"      Required_argument "f"
+                "decimal\0"   No_argument       "d"
                 ;
 
         applet_long_options = dumpleases_longopts;
@@ -50,11 +53,12 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
         init_unicode();
 
         opt_complementary = "=0:a--r:r--a";
-        opt = getopt32(argv, "arf:", &file);
+        opt = getopt32(argv, "arf:d", &file);
 
         fd = xopen(file, O_RDONLY);
 
-        printf("Mac Address       IP Address      Host Name           Expires %s\n", (opt & OPT_a) ? "at" : "in");
+        printf("Mac Address       IP Address      Host Name           Expires %s\n",
+                (opt & OPT_a) ? "at" : "in");
         /*     "00:00:00:00:00:00 255.255.255.255 ABCDEFGHIJKLMNOPQRS Wed Jun 30 21:49:08 1993" */
         /*     "123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 */
 
@@ -65,6 +69,9 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
                 written_at = curr; /* lease file from future! :) */
 
         while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
+                struct in_addr addr;
+                int64_t expires_abs;
+
                 const char *fmt = ":%02x" + 1;
                 for (i = 0; i < 6; i++) {
                         printf(fmt, lease.lease_mac[i]);
@@ -87,6 +94,13 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
                         puts("expired");
                         continue;
                 }
+                if (opt & OPT_d) {
+                        /* -d: decimal time */
+                        if (!(opt & OPT_a))
+                                expires_abs -= curr;
+                        printf("%llu\n", (unsigned long long) expires_abs);
+                        continue;
+                }
                 if (!(opt & OPT_a)) { /* no -a */
                         unsigned d, h, m;
                         unsigned expires = expires_abs - curr;