[Toybox] [PATCH] fix hwclock -w
enh
enh at google.com
Sat May 9 23:03:27 PDT 2015
Fix hwclock -w.
The gmtime_r/localtime_r error check was backwards, and the wrong argument
was being passed to the RTC_SET_TIME ioctl.
Also, the error reporting was misleading (showing errno for functions that
don't set errno) and too vague for the user to tell what failed.
Bug: 20902704
diff --git a/toys/pending/hwclock.c b/toys/pending/hwclock.c
index d9ced6f..d87266a 100644
--- a/toys/pending/hwclock.c
+++ b/toys/pending/hwclock.c
@@ -90,7 +90,7 @@ void hwclock_main()
xioctl(fd, RTC_RD_TIME, &tm);
if (TT.utc) s = xtzset("UTC0");
- if ((time = mktime(&tm)) < 0) goto bad;
+ if ((time = mktime(&tm)) < 0) error_exit("mktime failed");
if (TT.utc) {
free(xtzset(s));
free(s);
@@ -98,16 +98,18 @@ void hwclock_main()
}
}
- if (toys.optflags & (FLAG_w|FLAG_t))
- if (gettimeofday(&timeval, 0)
- || (TT.utc ? gmtime_r : localtime_r)(&timeval.tv_sec, &tm)) goto
bad;
+ if (toys.optflags & (FLAG_w|FLAG_t)) {
+ if (gettimeofday(&timeval, 0)) perror_exit("gettimeofday failed");
+ if (!(TT.utc ? gmtime_r : localtime_r)(&timeval.tv_sec, &tm))
+ error_exit(TT.utc ? "gmtime_r failed" : "localtime_r failed");
+ }
if (toys.optflags & FLAG_w) {
/* The value of tm_isdst will positive if daylight saving time is in
effect,
* zero if it is not and negative if the information is not available.
* todo: so why isn't this negative...? */
tm.tm_isdst = 0;
- xioctl(fd, RTC_SET_TIME, &time);
+ xioctl(fd, RTC_SET_TIME, &tm);
} else if (toys.optflags & FLAG_s) {
tzone.tz_minuteswest = timezone / 60 - 60 * daylight;
timeval.tv_sec = time;
@@ -127,12 +129,8 @@ void hwclock_main()
}
if (toys.optflags & (FLAG_t|FLAG_s)) {
tzone.tz_dsttime = 0;
- if (settimeofday(&timeval, &tzone)) goto bad;
+ if (settimeofday(&timeval, &tzone)) perror_exit("settimeofday failed");
}
if (fd != -1) close(fd);
-
- return;
-bad:
- perror_exit("failed");
}
--
Elliott Hughes - http://who/enh - http://jessies.org/~enh/
Android native code/tools questions? Mail me/drop by/add me as a reviewer.
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