vasilito
068a1ca63e
Bootloader fork rebase:
- Base changed from 0.1.0 pre-patched archive to upstream 1.0.0 tag (c7eeb9f)
- Applied 0001-redbear-local-forks.patch (Cargo.toml crate path redirects)
- Applied fix-uefi-alloc-panic.patch equivalents (4 panic!() -> graceful
error handling in src/main.rs)
- Applied P5-live-preload-cap-1gib.patch (1 GiB cap on live image preload)
- Skipped: P0 GPT partition scan (requires new module + integration),
P1 timeout/default-resolution, P2 live preload guard (subsumed by
panic fixes + cap), P3 live image safe read, P4 large ISO boot,
redox.patch — to be applied in dedicated rebase session.
firmware-loader/Cargo.toml: version 0.1.0 -> 0.3.0 (sync with other
Red Bear custom crates which are at 0.3.0).
fork-upstream-map.toml: bootloader back from PENDING_REBASE to 1.0.0
since the partial rebase matches upstream 1.0.0 content.
fork-upstream-map.toml: base restored to 'main' tracked (was correctly
tracked by build-redbear.sh).
91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/* Provide tzset for systems that don't have it or for which it's broken.
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Copyright (C) 2001-2003, 2005-2007, 2009-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* written by Jim Meyering */
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#include <config.h>
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/* Specification. */
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#include <time.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined _WIN32 && ! defined __CYGWIN__
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# include <wchar.h>
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#endif
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void
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rpl_tzset (void)
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#undef tzset
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{
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#if defined _WIN32 && ! defined __CYGWIN__
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/* Rectify the value of the environment variable TZ.
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There are four possible kinds of such values:
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- Traditional US time zone names, e.g. "PST8PDT". Syntax: see
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<https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/tzset>
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- Time zone names based on geography, that contain one or more
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slashes, e.g. "Europe/Moscow".
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- Time zone names based on geography, without slashes, e.g.
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"Singapore".
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- Time zone names that contain explicit DST rules. Syntax: see
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<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03>
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The Microsoft CRT understands only the first kind. It produces incorrect
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results if the value of TZ is of the other kinds.
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But in a Cygwin environment, /etc/profile.d/tzset.sh sets TZ to a value
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of the second kind for most geographies, or of the first kind in a few
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other geographies. If it is of the second kind, neutralize it. For the
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Microsoft CRT, an absent or empty TZ means the time zone that the user
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has set in the Windows Control Panel.
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If the value of TZ is of the third or fourth kind -- Cygwin programs
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understand these syntaxes as well --, it does not matter whether we
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neutralize it or not, since these values occur only when a Cygwin user
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has set TZ explicitly; this case is 1. rare and 2. under the user's
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responsibility. */
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const char *tz = getenv ("TZ");
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if (tz != NULL && strchr (tz, '/') != NULL)
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{
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/* Neutralize it, in a way that is multithread-safe.
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(If we were to use _putenv ("TZ="), it would free the memory allocated
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for the environment variable "TZ", and thus other threads that are
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using the previously fetched value of getenv ("TZ") could crash.) */
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char **env = _environ;
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wchar_t **wenv = _wenviron;
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if (env != NULL)
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for (char **ep = env; *ep != NULL; ep++)
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{
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char *s = *ep;
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if (s[0] == 'T' && s[1] == 'Z' && s[2] == '=')
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s[0] = '$';
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}
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if (wenv != NULL)
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for (wchar_t **wep = wenv; *wep != NULL; wep++)
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{
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wchar_t *ws = *wep;
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if (ws[0] == L'T' && ws[1] == L'Z' && ws[2] == L'=')
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ws[0] = L'$';
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}
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}
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/* On native Windows, tzset() is deprecated. Use _tzset() instead. See
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<https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/posix-tzset>
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<https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/tzset> */
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_tzset ();
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#else
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tzset ();
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#endif
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}
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