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Get last commit time of github flakes

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This commit is contained in:
Eelco Dolstra 2019-05-28 22:35:41 +02:00
parent 0f840483c7
commit ae7b56cd9a
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GPG key ID: 8170B4726D7198DE
5 changed files with 37 additions and 8 deletions
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18
src/libutil/util.cc
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@ -22,6 +22,7 @@
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <unistd.h>
#ifdef __APPLE__
@ -552,20 +553,31 @@ Paths createDirs(const Path & path)
}
void createSymlink(const Path & target, const Path & link)
void createSymlink(const Path & target, const Path & link,
std::optional<time_t> mtime)
{
if (symlink(target.c_str(), link.c_str()))
throw SysError(format("creating symlink from '%1%' to '%2%'") % link % target);
if (mtime) {
struct timeval times[2];
times[0].tv_sec = *mtime;
times[0].tv_usec = 0;
times[1].tv_sec = *mtime;
times[1].tv_usec = 0;
if (lutimes(link.c_str(), times))
throw SysError("setting time of symlink '%s'", link);
}
}
void replaceSymlink(const Path & target, const Path & link)
void replaceSymlink(const Path & target, const Path & link,
std::optional<time_t> mtime)
{
for (unsigned int n = 0; true; n++) {
Path tmp = canonPath(fmt("%s/.%d_%s", dirOf(link), n, baseNameOf(link)));
try {
createSymlink(target, tmp);
createSymlink(target, tmp, mtime);
} catch (SysError & e) {
if (e.errNo == EEXIST) continue;
throw;