upas/fs: fix handling of numeric timezone offsets in strtotm

Since numeric timezone offsets are relative to GMT, initialise zone to
GMT so tm2sec(2) does not assume local time.

Note that if strtotm encounters a timezone *string* and consequently
overwrites zone then we will end up in the same mess since tm2sec(2)
only deals with GMT or local time.

diff --git a/sys/src/cmd/upas/fs/strtotm.c b/sys/src/cmd/upas/fs/strtotm.c
index ccdc7c16c46fb35119ada9e937d6d1b5e9918ad4..fc6510f1a57d688df7f819820dd9b8e55df5d12b 100644 (file)
--- a/sys/src/cmd/upas/fs/strtotm.c
+++ b/sys/src/cmd/upas/fs/strtotm.c
@@ -38,6 +38,7 @@ strtotm(char *p, Tm *t)
        tm.min = -1;
        tm.year = -1;
        tm.mday = -1;
+       memcpy(tm.zone, "GMT", 3);
        for(p = skipwhite(p); *p; p = skipwhite(q)){
                q = skiptext(p);