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| author | Rich Felker <dalias@aerifal.cx> | 2014-06-06 20:46:05 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-06-06 20:46:05 -0400 |
| commit | f616294914e7c289791d856dca636bbccad5fef7 (patch) | |
| tree | 9959d8db03e88546fa7448e28805446c81510c5a | |
| parent | 3ff3a1d541241699f84b52e5ef4bacce2105568f (diff) | |
| download | musl-f616294914e7c289791d856dca636bbccad5fef7.tar.gz | |
use default timezone from /etc/localtime if $TZ is unset/blank
the way this is implemented, it also allows explicit setting of
TZ=/etc/localtime even for suid programs. this is not a problem
because /etc/localtime is a trusted path, much like the trusted
zoneinfo search path.
| -rw-r--r-- | src/time/__tz.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/time/__tz.c b/src/time/__tz.c index 6d7173cf..92c43a57 100644 --- a/src/time/__tz.c +++ b/src/time/__tz.c @@ -128,7 +128,7 @@ static void do_tzset() "/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0"; s = getenv("TZ"); - if (!s || !*s) s = __gmt; + if (!s || !*s) s = "/etc/localtime"; if (old_tz && !strcmp(s, old_tz)) return; @@ -153,7 +153,8 @@ static void do_tzset() if (*s == ':' || ((p=strchr(s, '/')) && !memchr(s, ',', p-s))) { if (*s == ':') s++; if (*s == '/' || *s == '.') { - if (!libc.secure) map = __map_file(s, &map_size); + if (!libc.secure || !strcmp(s, "/etc/localtime")) + map = __map_file(s, &map_size); } else { size_t l = strlen(s); if (l <= NAME_MAX && !strchr(s, '.')) { |