--- a/compat/compat-2.6.32.c +++ b/compat/compat-2.6.32.c @@ -117,3 +117,100 @@ void __dev_addr_unsync(struct dev_addr_l } EXPORT_SYMBOL_GPL(__dev_addr_unsync); +/* + * Nonzero if YEAR is a leap year (every 4 years, + * except every 100th isn't, and every 400th is). + */ +static int __isleap(long year) +{ + return (year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0); +} + +/* do a mathdiv for long type */ +static long math_div(long a, long b) +{ + return a / b - (a % b < 0); +} + +/* How many leap years between y1 and y2, y1 must less or equal to y2 */ +static long leaps_between(long y1, long y2) +{ + long leaps1 = math_div(y1 - 1, 4) - math_div(y1 - 1, 100) + + math_div(y1 - 1, 400); + long leaps2 = math_div(y2 - 1, 4) - math_div(y2 - 1, 100) + + math_div(y2 - 1, 400); + return leaps2 - leaps1; +} + +/* How many days come before each month (0-12). */ +static const unsigned short __mon_yday[2][13] = { + /* Normal years. */ + {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365}, + /* Leap years. */ + {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366} +}; + +#define SECS_PER_HOUR (60 * 60) +#define SECS_PER_DAY (SECS_PER_HOUR * 24) + +/** + * time_to_tm - converts the calendar time to local broken-down time + * + * @totalsecs the number of seconds elapsed since 00:00:00 on January 1, 1970, + * Coordinated Universal Time (UTC). + * @offset offset seconds adding to totalsecs. + * @result pointer to struct tm variable to receive broken-down time + */ +void time_to_tm(time_t totalsecs, int offset, struct tm *result) +{ + long days, rem, y; + const unsigned short *ip; + + days = totalsecs / SECS_PER_DAY; + rem = totalsecs % SECS_PER_DAY; + rem += offset; + while (rem < 0) { + rem += SECS_PER_DAY; + --days; + } + while (rem >= SECS_PER_DAY) { + rem -= SECS_PER_DAY; + ++days; + } + + result->tm_hour = rem / SECS_PER_HOUR; + rem %= SECS_PER_HOUR; + result->tm_min = rem / 60; + result->tm_sec = rem % 60; + + /* January 1, 1970 was a Thursday. */ + result->tm_wday = (4 + days) % 7; + if (result->tm_wday < 0) + result->tm_wday += 7; + + y = 1970; + + while (days < 0 || days >= (__isleap(y) ? 366 : 365)) { + /* Guess a corrected year, assuming 365 days per year. */ + long yg = y + math_div(days, 365); + + /* Adjust DAYS and Y to match the guessed year. */ + days -= (yg - y) * 365 + leaps_between(y, yg); + y = yg; + } + + result->tm_year = y - 1900; + + result->tm_yday = days; + + ip = __mon_yday[__isleap(y)]; + for (y = 11; days < ip[y]; y--) + continue; + days -= ip[y]; + + result->tm_mon = y; + result->tm_mday = days + 1; +} +EXPORT_SYMBOL(time_to_tm); +/* source: kernel/time/timeconv.c*/ + --- a/compat/compat-2.6.39.c +++ b/compat/compat-2.6.39.c @@ -10,6 +10,7 @@ #include #include +#include #ifdef CONFIG_COMPAT_BLUETOOTH #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)) --- a/compat/kstrtox.c +++ b/compat/kstrtox.c @@ -11,6 +11,14 @@ * * If -E is returned, result is not touched. */ +#include +/* + * kstrto* was included in kernel 2.6.38.4 and causes conflicts with the + * version included in compat-wireless. We use strict_strtol to check if + * kstrto* is already available. + */ +#ifndef strict_strtol + #include #include #include @@ -225,3 +233,4 @@ int kstrtos8(const char *s, unsigned int return 0; } EXPORT_SYMBOL(kstrtos8); +#endif /* #ifndef strict_strtol */ --- a/include/linux/compat-2.6.32.h +++ b/include/linux/compat-2.6.32.h @@ -96,6 +96,34 @@ struct dev_pm_ops name = { \ #define lockdep_assert_held(l) do { } while (0) +/* + * Similar to the struct tm in userspace , but it needs to be here so + * that the kernel source is self contained. + */ +struct tm { + /* + * the number of seconds after the minute, normally in the range + * 0 to 59, but can be up to 60 to allow for leap seconds + */ + int tm_sec; + /* the number of minutes after the hour, in the range 0 to 59*/ + int tm_min; + /* the number of hours past midnight, in the range 0 to 23 */ + int tm_hour; + /* the day of the month, in the range 1 to 31 */ + int tm_mday; + /* the number of months since January, in the range 0 to 11 */ + int tm_mon; + /* the number of years since 1900 */ + long tm_year; + /* the number of days since Sunday, in the range 0 to 6 */ + int tm_wday; + /* the number of days since January 1, in the range 0 to 365 */ + int tm_yday; +}; + +void time_to_tm(time_t totalsecs, int offset, struct tm *result); + #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)) */ #endif /* LINUX_26_32_COMPAT_H */ --- a/include/linux/compat-2.6.39.h +++ b/include/linux/compat-2.6.39.h @@ -94,6 +94,12 @@ static inline struct msi_desc *irq_desc_ } #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)) */ +/* + * kstrto* was included in kernel 2.6.38.4 and causes conflicts with the + * version included in compat-wireless. We use strict_strtol to check if + * kstrto* is already available. + */ +#ifndef strict_strtol /* Internal, do not use. */ int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res); int __must_check _kstrtol(const char *s, unsigned int base, long *res); @@ -153,6 +159,7 @@ int __must_check kstrtou16(const char *s int __must_check kstrtos16(const char *s, unsigned int base, s16 *res); int __must_check kstrtou8(const char *s, unsigned int base, u8 *res); int __must_check kstrtos8(const char *s, unsigned int base, s8 *res); +#endif /* ifndef strict_strtol */ #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)) */