[git commit] dumpleases: new option -d to show time in seconds

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=d320a1e7a57512e351aa119beb2c18115f9c80ae
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

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 at gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 networking/udhcp/dumpleases.c |   24 +++++++++++++++++++-----
 1 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 64cd73e..f68e499 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;