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7b4d039e00
Currently the OpenWRT boot scripts write the timezone configuration to /tmp/TZ, relying on the behaviour of uClibc that the timezone is read from /etc/TZ if no TZ env variable is found. This works because /etc/TZ is a symlink to /tmp/TZ. Musl libc however only reads the timezone from the TZ env variable and if it doesn't find it or it's empty, it will look for a zoneinfo file, that doesn't exist. So in musl builds no timezone is ever set. This patch fixes the issue by having musl libc behave like uClibc: if no TZ env variable is found it will try to load it from /etc/TZ. Signed-off-by: Gianluca Anzolin <gianluca at sottospazio.it> Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 46069
29 lines
777 B
Diff
29 lines
777 B
Diff
--- a/src/time/__tz.c
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+++ b/src/time/__tz.c
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@@ -23,6 +23,9 @@ static int r0[5], r1[5];
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static const unsigned char *zi, *trans, *index, *types, *abbrevs, *abbrevs_end;
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static size_t map_size;
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+static const char *tzfile;
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+static size_t tzfile_size;
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+
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static char old_tz_buf[32];
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static char *old_tz = old_tz_buf;
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static size_t old_tz_size = sizeof old_tz_buf;
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@@ -125,6 +128,15 @@ static void do_tzset()
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"/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
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s = getenv("TZ");
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+
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+ /* if TZ is empty try to read it from /etc/TZ */
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+ if (!s || !*s) {
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+ if (tzfile)
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+ __munmap((void*)tzfile, tzfile_size);
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+
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+ s = tzfile = (void *)__map_file("/etc/TZ", &tzfile_size);
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+ }
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+
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if (!s || !*s) s = "/etc/localtime";
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if (old_tz && !strcmp(s, old_tz)) return;
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