Signed-off-by: Giovanni Mascellani gmascellani@codeweavers.com --- dlls/ntdll/unix/system.c | 451 +++++++++++++++------------------ dlls/ntdll/unix/unix_private.h | 25 ++ 2 files changed, 224 insertions(+), 252 deletions(-)
diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c index a889b2e020c..5801308d4cb 100644 --- a/dlls/ntdll/unix/system.c +++ b/dlls/ntdll/unix/system.c @@ -2,6 +2,7 @@ * System information APIs * * Copyright 1996-1998 Marcus Meissner + * Copyright 2021 Giovanni Mascellani for CodeWeavers * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -30,6 +31,7 @@ #include <stdio.h> #include <stdlib.h> #include <errno.h> +#include <libgen.h> #ifdef HAVE_SYS_TIME_H # include <sys/time.h> #endif @@ -1673,117 +1675,6 @@ static void get_performance_info( SYSTEM_PERFORMANCE_INFORMATION *info ) info->TotalCommitLimit = (totalram + totalswap) / page_size; }
- -/* calculate the mday of dst change date, so that for instance Sun 5 Oct 2007 - * (last Sunday in October of 2007) becomes Sun Oct 28 2007 - * - * Note: year, day and month must be in unix format. - */ -static int weekday_to_mday(int year, int day, int mon, int day_of_week) -{ - struct tm date; - time_t tmp; - int wday, mday; - - /* find first day in the month matching week day of the date */ - memset(&date, 0, sizeof(date)); - date.tm_year = year; - date.tm_mon = mon; - date.tm_mday = -1; - date.tm_wday = -1; - do - { - date.tm_mday++; - tmp = mktime(&date); - } while (date.tm_wday != day_of_week || date.tm_mon != mon); - - mday = date.tm_mday; - - /* find number of week days in the month matching week day of the date */ - wday = 1; /* 1 - 1st, ...., 5 - last */ - while (wday < day) - { - struct tm *tm; - - date.tm_mday += 7; - tmp = mktime(&date); - tm = localtime(&tmp); - if (tm->tm_mon != mon) - break; - mday = tm->tm_mday; - wday++; - } - - return mday; -} - -static BOOL match_tz_date( const RTL_SYSTEM_TIME *st, const RTL_SYSTEM_TIME *reg_st ) -{ - WORD wDay; - - if (st->wMonth != reg_st->wMonth) return FALSE; - if (!st->wMonth) return TRUE; /* no transition dates */ - wDay = reg_st->wDay; - if (!reg_st->wYear) /* date in a day-of-week format */ - wDay = weekday_to_mday(st->wYear - 1900, reg_st->wDay, reg_st->wMonth - 1, reg_st->wDayOfWeek); - - return (st->wDay == wDay && - st->wHour == reg_st->wHour && - st->wMinute == reg_st->wMinute && - st->wSecond == reg_st->wSecond && - st->wMilliseconds == reg_st->wMilliseconds); -} - -static BOOL match_tz_info( const RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, - const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi ) -{ - return (tzi->Bias == reg_tzi->Bias && - match_tz_date(&tzi->StandardDate, ®_tzi->StandardDate) && - match_tz_date(&tzi->DaylightDate, ®_tzi->DaylightDate)); -} - -static BOOL match_past_tz_bias( time_t past_time, LONG past_bias ) -{ - LONG bias; - struct tm *tm; - if (!past_time) return TRUE; - - tm = gmtime( &past_time ); - bias = (LONG)(mktime(tm) - past_time) / 60; - return bias == past_bias; -} - -static BOOL match_tz_name( const char *tz_name, const RTL_DYNAMIC_TIME_ZONE_INFORMATION *reg_tzi ) -{ - static const struct { - WCHAR key_name[32]; - const char *short_name; - time_t past_time; - LONG past_bias; - } - mapping[] = - { - { {'N','o','r','t','h',' ','K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 }, - "KST", 1451606400 /* 2016-01-01 00:00:00 UTC */, -510 }, - { {'K','o','r','e','a',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 }, - "KST", 1451606400 /* 2016-01-01 00:00:00 UTC */, -540 }, - { {'T','o','k','y','o',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 }, - "JST" }, - { {'Y','a','k','u','t','s','k',' ','S','t','a','n','d','a','r','d',' ','T','i','m','e',0 }, - "+09" }, /* YAKST was used until tzdata 2016f */ - }; - unsigned int i; - - if (reg_tzi->DaylightDate.wMonth) return TRUE; - for (i = 0; i < ARRAY_SIZE(mapping); i++) - { - if (!wcscmp( mapping[i].key_name, reg_tzi->TimeZoneKeyName )) - return !strcmp( mapping[i].short_name, tz_name ) - && match_past_tz_bias( mapping[i].past_time, mapping[i].past_bias ); - } - return TRUE; -} - static BOOL reg_query_value( HKEY key, LPCWSTR name, DWORD type, void *data, DWORD count ) { char buf[256]; @@ -1802,6 +1693,47 @@ static BOOL reg_query_value( HKEY key, LPCWSTR name, DWORD type, void *data, DWO return TRUE; }
+static BOOL reg_query_value_dyn(HKEY key, LPCWSTR name, DWORD type, void **ret) +{ + UNICODE_STRING nameW; + void *buf = NULL, *new_buf; + ULONG buf_len = 0; + ULONG res_len; + NTSTATUS res; + KEY_VALUE_PARTIAL_INFORMATION *info; + + nameW.Buffer = (WCHAR*) name; + nameW.Length = wcslen(name) * sizeof(WCHAR); + + /* We might need to retry more than once if somebody changes the + key between the attempts. */ + while (1) + { + res = NtQueryValueKey(key, &nameW, KeyValuePartialInformation, buf, buf_len, &res_len); + if (res != STATUS_BUFFER_OVERFLOW && res != STATUS_BUFFER_TOO_SMALL) + break; + buf_len = res_len; + new_buf = realloc(buf, buf_len); + if (!new_buf) + { + free(buf); + return FALSE; + } + buf = new_buf; + } + + info = (KEY_VALUE_PARTIAL_INFORMATION*) buf; + if (res != STATUS_SUCCESS || info->Type != type) + { + free(buf); + return FALSE; + } + + memmove(buf, info->Data, info->DataLength); + *ret = buf; + return TRUE; +} + static void find_reg_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* tz_name, int year) { static const WCHAR stdW[] = { 'S','t','d',0 }; @@ -1809,6 +1741,7 @@ static void find_reg_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* static const WCHAR mui_stdW[] = { 'M','U','I','_','S','t','d',0 }; static const WCHAR mui_dltW[] = { 'M','U','I','_','D','l','t',0 }; static const WCHAR tziW[] = { 'T','Z','I',0 }; + static const WCHAR olsonW[] = { 'O','l','s','o','n',' ','n','a','m','e','s',0 }; static const WCHAR Time_ZonesW[] = { 'M','a','c','h','i','n','e','\', 'S','o','f','t','w','a','r','e','\', 'M','i','c','r','o','s','o','f','t','\', @@ -1822,12 +1755,18 @@ static void find_reg_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* OBJECT_ATTRIBUTES attr; UNICODE_STRING nameW; WCHAR yearW[16]; + WCHAR *tz_nameW; char buffer[128]; KEY_BASIC_INFORMATION *info = (KEY_BASIC_INFORMATION *)buffer;
+ TRACE("tzi %p, tz_name %s, year %d\n", tzi, tz_name, year); + sprintf( buffer, "%u", year ); ascii_to_unicode( yearW, buffer, strlen(buffer) + 1 );
+ tz_nameW = malloc((strlen(tz_name) + 1) * sizeof(tz_nameW[0])); + ascii_to_unicode(tz_nameW, tz_name, strlen(tz_name) + 1); + nameW.Buffer = (WCHAR *)Time_ZonesW; nameW.Length = sizeof(Time_ZonesW) - sizeof(WCHAR); InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL ); @@ -1845,12 +1784,28 @@ static void find_reg_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* RTL_SYSTEM_TIME dlt_date; } tz_data; BOOL is_dynamic = FALSE; + WCHAR *olson_names; + WCHAR *state = NULL, *token; + static const WCHAR spaceW[] = { ' ',0 };
nameW.Buffer = info->Name; nameW.Length = info->NameLength; attr.RootDirectory = key; if (NtOpenKey( &subkey, KEY_READ, &attr )) continue;
+ if (!reg_query_value_dyn(subkey, olsonW, REG_SZ, (void**) &olson_names)) + goto next; + for (token = wcstok(olson_names, spaceW, &state); + token != NULL; + token = wcstok(NULL, spaceW, &state)) + { + if (wcscmp(token, tz_nameW) == 0) + break; + } + free(olson_names); + if (token == NULL) + goto next; + memset( ®_tzi, 0, sizeof(reg_tzi) ); memcpy(reg_tzi.TimeZoneKeyName, nameW.Buffer, nameW.Length); reg_tzi.TimeZoneKeyName[nameW.Length/sizeof(WCHAR)] = 0; @@ -1881,181 +1836,173 @@ static void find_reg_tz_info(RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi, const char* reg_tzi.StandardDate = tz_data.std_date; reg_tzi.DaylightDate = tz_data.dlt_date;
- TRACE("%s: bias %d\n", debugstr_us(&nameW), reg_tzi.Bias); - TRACE("std (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", - reg_tzi.StandardDate.wDay, reg_tzi.StandardDate.wMonth, - reg_tzi.StandardDate.wYear, reg_tzi.StandardDate.wDayOfWeek, - reg_tzi.StandardDate.wHour, reg_tzi.StandardDate.wMinute, - reg_tzi.StandardDate.wSecond, reg_tzi.StandardDate.wMilliseconds, - reg_tzi.StandardBias); - TRACE("dst (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", - reg_tzi.DaylightDate.wDay, reg_tzi.DaylightDate.wMonth, - reg_tzi.DaylightDate.wYear, reg_tzi.DaylightDate.wDayOfWeek, - reg_tzi.DaylightDate.wHour, reg_tzi.DaylightDate.wMinute, - reg_tzi.DaylightDate.wSecond, reg_tzi.DaylightDate.wMilliseconds, - reg_tzi.DaylightBias); - - if (match_tz_info( tzi, ®_tzi ) && match_tz_name( tz_name, ®_tzi )) - { - *tzi = reg_tzi; - NtClose( subkey ); - NtClose( key ); - return; - } + *tzi = reg_tzi; + NtClose( subkey ); + NtClose( key ); + free(tz_nameW); + return; + next: NtClose( subkey ); } NtClose( key ); + free(tz_nameW);
if (idx == 1) return; /* registry info not initialized yet */
- FIXME("Can't find matching timezone information in the registry for " - "%s, bias %d, std (d/m/y): %u/%02u/%04u, dlt (d/m/y): %u/%02u/%04u\n", - tz_name, tzi->Bias, - tzi->StandardDate.wDay, tzi->StandardDate.wMonth, tzi->StandardDate.wYear, - tzi->DaylightDate.wDay, tzi->DaylightDate.wMonth, tzi->DaylightDate.wYear); + FIXME("Can't find matching timezone information in the registry for %s\n", tz_name); }
-static time_t find_dst_change(unsigned long min, unsigned long max, int *is_dst) +/* This function can return either a relative or absolute path to a tz + data file. */ +static char *get_tz_setting(void) { - time_t start; - struct tm *tm; + char *tz; + FILE *fin;
- start = min; - tm = localtime(&start); - *is_dst = !tm->tm_isdst; - TRACE("starting date isdst %d, %s", !*is_dst, ctime(&start)); + tz = getenv("TZ"); + if (tz) + tz = strdup(tz); + if (tz) + return tz;
- while (min <= max) + tz = realpath("/etc/localtime", NULL); + if (tz) + return tz; + + /* /etc/timezone is available on Debian and maybe other Linux + systems. */ + fin = fopen("/etc/timezone", "r"); + if (fin) { - time_t pos = (min + max) / 2; - tm = localtime(&pos); + ssize_t read_len; + size_t tz_len = 0;
- if (tm->tm_isdst != *is_dst) - min = pos + 1; - else - max = pos - 1; + tz = NULL; + read_len = getline(&tz, &tz_len, fin); + if (read_len > 0 && tz[read_len - 1] == '\n') + tz[read_len - 1] = '\0'; + fclose(fin); + if (read_len >= 0) + return tz; + free(tz); } - return min; + + /* /etc/LOCALTIME is available on Solaris. */ + fin = fopen("/etc/LOCALTIME", "r"); + if (fin) + { + ssize_t read_len; + size_t tz_len = 0; + + for (tz = NULL; (read_len = getline(&tz, &tz_len, fin)) >= 0;) + { + if (read_len >= 3 && tz[0] == 'T' && tz[1] == 'Z' && tz[2] == '=') + { + if (tz[read_len - 1] == '\n') + tz[read_len - 1] = '\0'; + /* -2 instead of -3 because we also want to move the + terminator. */ + memmove(tz, &tz[3], read_len-2); + fclose(fin); + return tz; + } + } + fclose(fin); + free(tz); + } + + /* No good, let us assume UTC. */ + return strdup("UTC"); +} + +/* Check if a path points to a plausible zoneinfo directory by + checking if it contains a file named tzdata.zi. */ +static int check_tzdir(const char *dir) +{ + int dir_fd = -1, fd = -1, ret = 0; + struct stat stat; + + dir_fd = open(dir, O_PATH | O_DIRECTORY); + if (dir_fd < 0) + goto end; + + fd = openat(dir_fd, "tzdata.zi", O_PATH); + if (fd < 0) + goto end; + + if (fstat(fd, &stat) != 0) + goto end; + + ret = S_ISREG(stat.st_mode); + + end: + close(fd); + close(dir_fd); + return ret; }
static void get_timezone_info( RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi ) { static pthread_mutex_t tz_mutex = PTHREAD_MUTEX_INITIALIZER; static RTL_DYNAMIC_TIME_ZONE_INFORMATION cached_tzi; - static int current_year = -1, current_bias = 65535; - struct tm *tm; - char tz_name[16]; - time_t year_start, year_end, tmp, dlt = 0, std = 0; - int is_dst, bias; + static int current_year = -1; + struct tm tm; + char *tz; + time_t now;
- mutex_lock( &tz_mutex ); + now = time(NULL); + tm = *localtime(&now);
- year_start = time(NULL); - tm = gmtime(&year_start); - bias = (LONG)(mktime(tm) - year_start) / 60; - - tm = localtime(&year_start); - if (current_year == tm->tm_year && current_bias == bias) + mutex_lock(&tz_mutex); + if (tm.tm_year == current_year) { *tzi = cached_tzi; - mutex_unlock( &tz_mutex ); + mutex_unlock(&tz_mutex); return; }
- memset(tzi, 0, sizeof(*tzi)); - if (!strftime(tz_name, sizeof(tz_name), "%Z", tm)) { - /* not enough room or another error */ - tz_name[0] = '\0'; - } - - TRACE("tz data will be valid through year %d, bias %d\n", tm->tm_year + 1900, bias); - current_year = tm->tm_year; - current_bias = bias; - - tzi->Bias = bias; - - tm->tm_isdst = 0; - tm->tm_mday = 1; - tm->tm_mon = tm->tm_hour = tm->tm_min = tm->tm_sec = tm->tm_wday = tm->tm_yday = 0; - year_start = mktime(tm); - TRACE("year_start: %s", ctime(&year_start)); + current_year = tm.tm_year;
- tm->tm_mday = tm->tm_wday = tm->tm_yday = 0; - tm->tm_mon = 12; - tm->tm_hour = 23; - tm->tm_min = tm->tm_sec = 59; - year_end = mktime(tm); - TRACE("year_end: %s", ctime(&year_end)); - - tmp = find_dst_change(year_start, year_end, &is_dst); - if (is_dst) - dlt = tmp; - else - std = tmp; - - tmp = find_dst_change(tmp, year_end, &is_dst); - if (is_dst) - dlt = tmp; + tz = get_tz_setting(); + if (!tz) + { + ERR("cannot malloc\n"); + memset(&cached_tzi, 0, sizeof(cached_tzi)); + } else - std = tmp; + { + if (tz[0] == '/') + { + /* Absoute path: find the part relative to the zoneinfo + directory. */ + char *dir = strdup(tz); + if (!dir) + { + ERR("cannot malloc\n"); + memset(&cached_tzi, 0, sizeof(cached_tzi)); + goto end; + } + for (dir = dirname(dir); strcmp(dir, "/") != 0; dir = dirname(dir)) + { + if (check_tzdir(dir)) + { + memmove(tz, &tz[strlen(dir) + 1], strlen(tz) - strlen(dir)); + break; + } + } + free(dir); + } + find_reg_tz_info(&cached_tzi, tz, tm.tm_year); + }
- TRACE("std: %s", ctime(&std)); - TRACE("dlt: %s", ctime(&dlt)); + end: + *tzi = cached_tzi; + mutex_unlock(&tz_mutex);
- if (dlt == std || !dlt || !std) - TRACE("there is no daylight saving rules in this time zone\n"); - else - { - tmp = dlt - tzi->Bias * 60; - tm = gmtime(&tmp); - TRACE("dlt gmtime: %s", asctime(tm)); - - tzi->DaylightBias = -60; - tzi->DaylightDate.wYear = tm->tm_year + 1900; - tzi->DaylightDate.wMonth = tm->tm_mon + 1; - tzi->DaylightDate.wDayOfWeek = tm->tm_wday; - tzi->DaylightDate.wDay = tm->tm_mday; - tzi->DaylightDate.wHour = tm->tm_hour; - tzi->DaylightDate.wMinute = tm->tm_min; - tzi->DaylightDate.wSecond = tm->tm_sec; - tzi->DaylightDate.wMilliseconds = 0; - - TRACE("daylight (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", - tzi->DaylightDate.wDay, tzi->DaylightDate.wMonth, - tzi->DaylightDate.wYear, tzi->DaylightDate.wDayOfWeek, - tzi->DaylightDate.wHour, tzi->DaylightDate.wMinute, - tzi->DaylightDate.wSecond, tzi->DaylightDate.wMilliseconds, - tzi->DaylightBias); - - tmp = std - tzi->Bias * 60 - tzi->DaylightBias * 60; - tm = gmtime(&tmp); - TRACE("std gmtime: %s", asctime(tm)); - - tzi->StandardBias = 0; - tzi->StandardDate.wYear = tm->tm_year + 1900; - tzi->StandardDate.wMonth = tm->tm_mon + 1; - tzi->StandardDate.wDayOfWeek = tm->tm_wday; - tzi->StandardDate.wDay = tm->tm_mday; - tzi->StandardDate.wHour = tm->tm_hour; - tzi->StandardDate.wMinute = tm->tm_min; - tzi->StandardDate.wSecond = tm->tm_sec; - tzi->StandardDate.wMilliseconds = 0; - - TRACE("standard (d/m/y): %u/%02u/%04u day of week %u %u:%02u:%02u.%03u bias %d\n", - tzi->StandardDate.wDay, tzi->StandardDate.wMonth, - tzi->StandardDate.wYear, tzi->StandardDate.wDayOfWeek, - tzi->StandardDate.wHour, tzi->StandardDate.wMinute, - tzi->StandardDate.wSecond, tzi->StandardDate.wMilliseconds, - tzi->StandardBias); - } - - find_reg_tz_info(tzi, tz_name, current_year + 1900); - cached_tzi = *tzi; - mutex_unlock( &tz_mutex ); + free(tz); }
- /****************************************************************************** * NtQuerySystemInformation (NTDLL.@) */ diff --git a/dlls/ntdll/unix/unix_private.h b/dlls/ntdll/unix/unix_private.h index f8f50d0ab27..4e1ba13e6f9 100644 --- a/dlls/ntdll/unix/unix_private.h +++ b/dlls/ntdll/unix/unix_private.h @@ -466,6 +466,30 @@ static inline int ntdll_wcsnicmp( const WCHAR *str1, const WCHAR *str2, int n ) return ret; }
+static inline int ntdll_wcstok_helper( WCHAR c, const WCHAR *delim ) +{ + for (; *delim != 0; delim++) + if (c == *delim) + return 1; + return 0; +} + +static inline WCHAR *ntdll_wcstok( WCHAR *str, const WCHAR *delim, WCHAR **state ) +{ + WCHAR *ret; + + if (!str) + str = *state; + for (; *str != 0 && ntdll_wcstok_helper(*str, delim); str++); + if (*str == 0) + return NULL; + ret = str; + for (; *str != 0 && !ntdll_wcstok_helper(*str, delim); str++); + *(str++) = 0; + *state = str; + return ret; +} + #define wcslen(str) ntdll_wcslen(str) #define wcscpy(dst,src) ntdll_wcscpy(dst,src) #define wcscat(dst,src) ntdll_wcscat(dst,src) @@ -476,6 +500,7 @@ static inline int ntdll_wcsnicmp( const WCHAR *str1, const WCHAR *str2, int n ) #define wcspbrk(str,ac) ntdll_wcspbrk(str,ac) #define wcsicmp(s1, s2) ntdll_wcsicmp(s1,s2) #define wcsnicmp(s1, s2,n) ntdll_wcsnicmp(s1,s2,n) +#define wcstok(s1,s2,s3) ntdll_wcstok(s1,s2,s3) #define wcsupr(str) ntdll_wcsupr(str) #define towupper(c) ntdll_towupper(c) #define towlower(c) ntdll_towlower(c)