nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-11-30 22:20:59 +01:00
Code Activity

Merge remote-tracking branch 'origin/master' into lazy-trees

Browse source
This commit is contained in:
Eelco Dolstra 2022-06-23 17:24:44 +02:00
commit f959ce3e03
21 changed files with 141 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

36
src/libutil/util.cc
View file

@ -29,6 +29,7 @@
#ifdef __APPLE__
#include <sys/syscall.h>
#include <mach-o/dyld.h>
#endif
#ifdef __linux__
@ -574,6 +575,20 @@ Path getHome()
static Path homeDir = []()
{
auto homeDir = getEnv("HOME");
if (homeDir) {
// Only use $HOME if doesn't exist or is owned by the current user.
struct stat st;
int result = stat(homeDir->c_str(), &st);
if (result != 0) {
if (errno != ENOENT) {
warn("couldn't stat $HOME ('%s') for reason other than not existing ('%d'), falling back to the one defined in the 'passwd' file", *homeDir, errno);
homeDir.reset();
}
} else if (st.st_uid != geteuid()) {
warn("$HOME ('%s') is not owned by you, falling back to the one defined in the 'passwd' file", *homeDir);
homeDir.reset();
}
}
if (!homeDir) {
std::vector<char> buf(16384);
struct passwd pwbuf;
@ -619,6 +634,27 @@ Path getDataDir()
}
std::optional<Path> getSelfExe()
{
static auto cached = []() -> std::optional<Path>
{
#if __linux__
return readLink("/proc/self/exe");
#elif __APPLE__
char buf[1024];
uint32_t size = sizeof(buf);
if (_NSGetExecutablePath(buf, &size) == 0)
return buf;
else
return std::nullopt;
#else
return std::nullopt;
#endif
}();
return cached;
}
Paths createDirs(const Path & path)
{
Paths created;