Luna/libos/src/FileSystem.cpp

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2023-04-13 16:33:04 +00:00
#include <luna/Ignore.h>
#include <luna/String.h>
#include <os/FileSystem.h>
#include <errno.h>
#include <pwd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <unistd.h>
namespace os::FileSystem
{
bool exists(StringView path)
{
struct stat st;
if (stat(path.chars(), &st) < 0) return false;
return true;
}
bool is_directory(StringView path)
{
struct stat st;
if (stat(path.chars(), &st) < 0) return false;
return S_ISDIR(st.st_mode);
}
Result<void> create_directory(StringView path, mode_t mode)
{
long rc = syscall(SYS_mkdir, path.chars(), mode);
int _ignore = TRY(Result<int>::from_syscall(rc));
ignore(_ignore);
return {};
}
Result<void> remove(StringView path)
{
long rc = syscall(SYS_unlink, path.chars(), 0);
int _ignore = TRY(Result<int>::from_syscall(rc));
ignore(_ignore);
return {};
}
Result<String> working_directory()
{
char* ptr = getcwd(NULL, 0);
if (!ptr) return err(errno);
return String { ptr };
}
Result<String> home_directory()
{
char* home = getenv("HOME");
if (home) return String::from_cstring(home);
struct passwd* pw = getpwuid(getuid());
if (!pw) return err(ENOENT);
return String::from_cstring(pw->pw_dir);
}
}