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KWSys 2018-11-28 (5ea12a52)

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Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit 5ea12a52b24248041adf49421a43df649530fc23 (master).

Upstream Shortlog
-----------------

Isaiah Norton (1):
      4f9fb9aa SystemTools: Fix Touch to avoid requiring file ownership
This commit is contained in:
KWSys Upstream
2018-11-28 07:11:04 -05:00
committed by Brad King
parent 0bc20334bc
commit cbc772b89d
1 changed files with 4 additions and 28 deletions
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32
SystemTools.cxx
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@@ -1355,39 +1355,15 @@ bool SystemTools::Touch(const std::string& filename, bool create)
}
CloseHandle(h);
#elif KWSYS_CXX_HAS_UTIMENSAT
struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
if (utimensat(AT_FDCWD, filename.c_str(), times, 0) < 0) {
// utimensat is only available on newer Unixes and macOS 10.13+
if (utimensat(AT_FDCWD, filename.c_str(), NULL, 0) < 0) {
return false;
}
#else
struct stat st;
if (stat(filename.c_str(), &st) < 0) {
// fall back to utimes
if (utimes(filename.c_str(), NULL) < 0) {
return false;
}
struct timeval mtime;
gettimeofday(&mtime, 0);
# if KWSYS_CXX_HAS_UTIMES
struct timeval atime;
# if KWSYS_CXX_STAT_HAS_ST_MTIM
atime.tv_sec = st.st_atim.tv_sec;
atime.tv_usec = st.st_atim.tv_nsec / 1000;
# elif KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
atime.tv_sec = st.st_atimespec.tv_sec;
atime.tv_usec = st.st_atimespec.tv_nsec / 1000;
# else
atime.tv_sec = st.st_atime;
atime.tv_usec = 0;
# endif
struct timeval times[2] = { atime, mtime };
if (utimes(filename.c_str(), times) < 0) {
return false;
}
# else
struct utimbuf times = { st.st_atime, mtime.tv_sec };
if (utime(filename.c_str(), &times) < 0) {
return false;
}
# endif
#endif
return true;
}