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* _user_{get|set}_tzfilename() can now be used with NULL filename pointers

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in case one just want to get or set the timezone.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31370 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2009-07-02 14:05:44 +00:00
parent b4ef57412c
commit 215c1a6c75
1 changed files with 19 additions and 12 deletions
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31
src/system/kernel/real_time_clock.c
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@ -297,18 +297,18 @@ _user_set_tzfilename(const char *filename, size_t length, bool isGMT)
if (geteuid() != 0)
return B_NOT_ALLOWED;
if (!IS_USER_ADDRESS(filename)
|| filename == NULL
|| user_strlcpy(sTimezoneFilename, filename,
B_PATH_NAME_LENGTH) < B_OK)
return B_BAD_ADDRESS;
if (filename != NULL && length > 0) {
if (!IS_USER_ADDRESS(filename)
|| user_strlcpy(sTimezoneFilename, filename, B_PATH_NAME_LENGTH) < 0)
return B_BAD_ADDRESS;
}
sIsGMT = isGMT;
if (wasGMT != sIsGMT) {
arch_rtc_set_system_time_offset(sRealTimeData,
arch_rtc_get_system_time_offset(sRealTimeData) + (((sIsGMT) ? 1 : -1)
* sTimezoneOffset));
arch_rtc_get_system_time_offset(sRealTimeData)
+ (sIsGMT ? 1 : -1) * sTimezoneOffset);
}
return B_OK;
@ -316,12 +316,19 @@ _user_set_tzfilename(const char *filename, size_t length, bool isGMT)
status_t
_user_get_tzfilename(char *filename, size_t length, bool *_isGMT)
_user_get_tzfilename(char *userFilename, size_t length, bool *_userIsGMT)
{
if (filename == NULL || _isGMT == NULL
|| !IS_USER_ADDRESS(filename) || !IS_USER_ADDRESS(_isGMT)
|| user_strlcpy(filename, sTimezoneFilename, length) < B_OK
|| user_memcpy(_isGMT, &sIsGMT, sizeof(bool)) < B_OK)
if ((userFilename == NULL || length == 0) && _userIsGMT == NULL)
return B_BAD_VALUE;
if (userFilename != NULL
&& (!IS_USER_ADDRESS(userFilename)
|| user_strlcpy(userFilename, sTimezoneFilename, length) < 0))
return B_BAD_ADDRESS;
if (_userIsGMT != NULL
&& (!IS_USER_ADDRESS(_userIsGMT)
|| user_memcpy(_userIsGMT, &sIsGMT, sizeof(bool)) != B_OK))
return B_BAD_ADDRESS;
return B_OK;