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Code

When faking a create time, use the full timespec values, not time_t.

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Jeremy.
This commit is contained in:
Jeremy Allison 2009-07-08 12:28:01 -07:00
parent 7fd42d51c8
commit 58daaa3d1e
1 changed files with 63 additions and 61 deletions
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124
source3/lib/system.c
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@ -290,67 +290,6 @@ int sys_fcntl_long(int fd, int cmd, long arg)
return ret;
}
/****************************************************************************
Return the best approximation to a 'create time' under UNIX from a stat
structure.
****************************************************************************/
static time_t calc_create_time(const struct stat *st)
{
time_t ret, ret1;
ret = MIN(st->st_ctime, st->st_mtime);
ret1 = MIN(ret, st->st_atime);
if(ret1 != (time_t)0) {
return ret1;
}
/*
* One of ctime, mtime or atime was zero (probably atime).
* Just return MIN(ctime, mtime).
*/
return ret;
}
/****************************************************************************
Return the 'create time' from a stat struct if it exists (birthtime) or else
use the best approximation.
****************************************************************************/
static struct timespec get_create_timespec(const struct stat *pst)
{
struct timespec ret;
if (S_ISDIR(pst->st_mode) && lp_fake_dir_create_times()) {
ret.tv_sec = 315493200L; /* 1/1/1980 */
ret.tv_nsec = 0;
return ret;
}
#if defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC)
ret = pst->st_birthtimespec;
#elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
ret.tv_sec = pst->st_birthtime;
ret.tv_nsec = pst->st_birthtimenspec;
#elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIME)
ret.tv_sec = pst->st_birthtime;
ret.tv_nsec = 0;
#else
ret.tv_sec = calc_create_time(pst);
ret.tv_nsec = 0;
#endif
/* Deal with systems that don't initialize birthtime correctly.
* Pointed out by SATOH Fumiyasu <fumiyas@osstech.jp>.
*/
if (null_timespec(ret)) {
ret.tv_sec = calc_create_time(pst);
ret.tv_nsec = 0;
}
return ret;
}
/****************************************************************************
Get/Set all the possible time fields from a stat struct as a timespec.
****************************************************************************/
@ -460,6 +399,69 @@ static struct timespec get_ctimespec(const struct stat *pst)
#endif
}
/****************************************************************************
Return the best approximation to a 'create time' under UNIX from a stat
structure.
****************************************************************************/
static struct timespec calc_create_time(const struct stat *st)
{
struct timespec ret, ret1;
struct timespec c_time = get_ctimespec(st);
struct timespec m_time = get_mtimespec(st);
struct timespec a_time = get_atimespec(st);
ret = timespec_compare(&c_time, &m_time) < 0 ? c_time : m_time;
ret1 = timespec_compare(&ret, &a_time) < 0 ? ret : a_time;
if(!null_timespec(ret1)) {
return ret1;
}
/*
* One of ctime, mtime or atime was zero (probably atime).
* Just return MIN(ctime, mtime).
*/
return ret;
}
/****************************************************************************
Return the 'create time' from a stat struct if it exists (birthtime) or else
use the best approximation.
****************************************************************************/
static struct timespec get_create_timespec(const struct stat *pst)
{
struct timespec ret;
if (S_ISDIR(pst->st_mode) && lp_fake_dir_create_times()) {
ret.tv_sec = 315493200L; /* 1/1/1980 */
ret.tv_nsec = 0;
return ret;
}
#if defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC)
ret = pst->st_birthtimespec;
#elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
ret.tv_sec = pst->st_birthtime;
ret.tv_nsec = pst->st_birthtimenspec;
#elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIME)
ret.tv_sec = pst->st_birthtime;
ret.tv_nsec = 0;
#else
ret = calc_create_time(pst);
#endif
/* Deal with systems that don't initialize birthtime correctly.
* Pointed out by SATOH Fumiyasu <fumiyas@osstech.jp>.
*/
if (null_timespec(ret)) {
ret = calc_create_time(pst);
}
return ret;
}
static void init_stat_ex_from_stat (struct stat_ex *dst,
const struct stat *src)
{