namespace llvm {
namespace sys {
namespace fs {
+#if defined(__FreeBSD__) || defined (__NetBSD__) || defined(__Bitrig__) || \
+ defined(__OpenBSD__) || defined(__minix) || defined(__FreeBSD_kernel__) || \
+ defined(__linux__) || defined(__CYGWIN__)
+static int
+test_dir(char buf[PATH_MAX], char ret[PATH_MAX],
+ const char *dir, const char *bin)
+{
+ struct stat sb;
+
+ snprintf(buf, PATH_MAX, "%s/%s", dir, bin);
+ if (realpath(buf, ret) == NULL)
+ return (1);
+ if (stat(buf, &sb) != 0)
+ return (1);
+
+ return (0);
+}
+
+static char *
+getprogpath(char ret[PATH_MAX], const char *bin)
+{
+ char *pv, *s, *t, buf[PATH_MAX];
+
+ /* First approach: absolute path. */
+ if (bin[0] == '/') {
+ if (test_dir(buf, ret, "/", bin) == 0)
+ return (ret);
+ return (NULL);
+ }
+
+ /* Second approach: relative path. */
+ if (strchr(bin, '/') != NULL) {
+ if (getcwd(buf, PATH_MAX) == NULL)
+ return (NULL);
+ if (test_dir(buf, ret, buf, bin) == 0)
+ return (ret);
+ return (NULL);
+ }
+
+ /* Third approach: $PATH */
+ if ((pv = getenv("PATH")) == NULL)
+ return (NULL);
+ s = pv = strdup(pv);
+ if (pv == NULL)
+ return (NULL);
+ while ((t = strsep(&s, ":")) != NULL) {
+ if (test_dir(buf, ret, t, bin) == 0) {
+ free(pv);
+ return (ret);
+ }
+ }
+ free(pv);
+ return (NULL);
+}
+#endif // __FreeBSD__ || __NetBSD__ || __FreeBSD_kernel__
+
+/// GetMainExecutable - Return the path to the main executable, given the
+/// value of argv[0] from program startup.
+std::string getMainExecutable(const char *argv0, void *MainAddr) {
+#if defined(__APPLE__)
+ // On OS X the executable path is saved to the stack by dyld. Reading it
+ // from there is much faster than calling dladdr, especially for large
+ // binaries with symbols.
+ char exe_path[MAXPATHLEN];
+ uint32_t size = sizeof(exe_path);
+ if (_NSGetExecutablePath(exe_path, &size) == 0) {
+ char link_path[MAXPATHLEN];
+ if (realpath(exe_path, link_path))
+ return Path(link_path);
+ }
+#elif defined(__FreeBSD__) || defined (__NetBSD__) || defined(__Bitrig__) || \
+ defined(__OpenBSD__) || defined(__minix) || defined(__FreeBSD_kernel__)
+ char exe_path[PATH_MAX];
+
+ if (getprogpath(exe_path, argv0) != NULL)
+ return Path(exe_path);
+#elif defined(__linux__) || defined(__CYGWIN__)
+ char exe_path[MAXPATHLEN];
+ StringRef aPath("/proc/self/exe");
+ if (sys::fs::exists(aPath)) {
+ // /proc is not always mounted under Linux (chroot for example).
+ ssize_t len = readlink(aPath.str().c_str(), exe_path, sizeof(exe_path));
+ if (len >= 0)
+ return StringRef(exe_path, len);
+ } else {
+ // Fall back to the classical detection.
+ if (getprogpath(exe_path, argv0) != NULL)
+ return exe_path;
+ }
+#elif defined(HAVE_DLFCN_H)
+ // Use dladdr to get executable path if available.
+ Dl_info DLInfo;
+ int err = dladdr(MainAddr, &DLInfo);
+ if (err == 0)
+ return Path();
+
+ // If the filename is a symlink, we need to resolve and return the location of
+ // the actual executable.
+ char link_path[MAXPATHLEN];
+ if (realpath(DLInfo.dli_fname, link_path))
+ return Path(link_path);
+#else
+#error GetMainExecutable is not implemented on this host yet.
+#endif
+ return "";
+}
TimeValue file_status::getLastModificationTime() const {
TimeValue Ret;
}
/// \brief Compute the path to the main executable.
-llvm::sys::Path GetExecutablePath(const char *Argv0) {
+std::string GetExecutablePath(const char *Argv0) {
// This just needs to be some symbol in the binary; C++ doesn't
// allow taking the address of ::main however.
void *P = (void*) (intptr_t) GetExecutablePath;
- return llvm::sys::Path::GetMainExecutable(Argv0, P);
+ return llvm::sys::fs::getMainExecutable(Argv0, P);
}
int main(int argc, char **argv) {
// tree.
bool IsInDevelopmentTree;
enum { MakefileStyle, CMakeStyle, CMakeBuildModeStyle } DevelopmentTreeLayout;
- llvm::SmallString<256> CurrentPath(GetExecutablePath(argv[0]).str());
+ llvm::SmallString<256> CurrentPath(GetExecutablePath(argv[0]));
std::string CurrentExecPrefix;
std::string ActiveObjRoot;
//===----------------------------------------------------------------------===//
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PathV1.h"
#include "llvm/Support/Program.h"
exit(1);
}
- Path my_exe = Path::GetMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
+ std::string my_exe =
+ sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
const char *argv[] = {
my_exe.c_str(),
"--gtest_filter=ProgramTest.CreateProcessTrailingSlashChild",
StringRef nul("/dev/null");
#endif
const StringRef *redirects[] = { &nul, &nul, 0 };
- int rc = ExecuteAndWait(my_exe.str(), argv, &envp[0], redirects,
+ int rc = ExecuteAndWait(my_exe, argv, &envp[0], redirects,
/*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &error,
&ExecutionFailed);
EXPECT_FALSE(ExecutionFailed) << error;