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fix 

llvm-svn: 374846
This commit is contained in:
Walter Erquinigo 2019-10-14 23:32:46 +00:00
parent b052331bd6
commit ed57fb7665
1 changed files with 63 additions and 52 deletions
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115
lldb/source/Host/linux/Host.cpp
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@ -144,61 +144,13 @@ static ArchSpec GetELFProcessCPUType(llvm::StringRef exe_path) {
}
}
static bool GetProcessAndStatInfo(::pid_t pid,
ProcessInstanceInfo &process_info,
ProcessState &State, ::pid_t &tracerpid) {
tracerpid = 0;
process_info.Clear();
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
// We can't use getProcFile here because proc/[pid]/exe is a symbolic link.
llvm::SmallString<64> ProcExe;
(llvm::Twine("/proc/") + llvm::Twine(pid) + "/exe").toVector(ProcExe);
std::string ExePath(PATH_MAX, '\0');
ssize_t len = readlink(ProcExe.c_str(), &ExePath[0], PATH_MAX);
if (len <= 0) {
LLDB_LOG(log, "failed to read link exe link for {0}: {1}", pid,
Status(errno, eErrorTypePOSIX));
return false;
}
ExePath.resize(len);
// If the binary has been deleted, the link name has " (deleted)" appended.
// Remove if there.
llvm::StringRef PathRef = ExePath;
PathRef.consume_back(" (deleted)");
process_info.SetArchitecture(GetELFProcessCPUType(PathRef));
// Get the process environment.
auto BufferOrError = getProcFile(pid, "environ");
static void GetProcessArgs(::pid_t pid, ProcessInstanceInfo &process_info) {
auto BufferOrError = getProcFile(pid, "cmdline");
if (!BufferOrError)
return false;
std::unique_ptr<llvm::MemoryBuffer> Environ = std::move(*BufferOrError);
// Get the command line used to start the process.
BufferOrError = getProcFile(pid, "cmdline");
if (!BufferOrError)
return false;
return;
std::unique_ptr<llvm::MemoryBuffer> Cmdline = std::move(*BufferOrError);
// Get User and Group IDs and get tracer pid.
if (!GetStatusInfo(pid, process_info, State, tracerpid))
return false;
process_info.SetProcessID(pid);
process_info.GetExecutableFile().SetFile(PathRef, FileSpec::Style::native);
llvm::StringRef Rest = Environ->getBuffer();
while (!Rest.empty()) {
llvm::StringRef Var;
std::tie(Var, Rest) = Rest.split('\0');
process_info.GetEnvironment().insert(Var);
}
llvm::StringRef Arg0;
llvm::StringRef Arg0, Rest;
std::tie(Arg0, Rest) = Cmdline->getBuffer().split('\0');
process_info.SetArg0(Arg0);
while (!Rest.empty()) {
@ -206,6 +158,65 @@ static bool GetProcessAndStatInfo(::pid_t pid,
std::tie(Arg, Rest) = Rest.split('\0');
process_info.GetArguments().AppendArgument(Arg);
}
}
static void GetExePathAndArch(::pid_t pid, ProcessInstanceInfo &process_info) {
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
std::string ExePath(PATH_MAX, '\0');
// We can't use getProcFile here because proc/[pid]/exe is a symbolic link.
llvm::SmallString<64> ProcExe;
(llvm::Twine("/proc/") + llvm::Twine(pid) + "/exe").toVector(ProcExe);
ssize_t len = readlink(ProcExe.c_str(), &ExePath[0], PATH_MAX);
if (len > 0) {
ExePath.resize(len);
} else {
LLDB_LOG(log, "failed to read link exe link for {0}: {1}", pid,
Status(errno, eErrorTypePOSIX));
ExePath.resize(0);
}
// If the binary has been deleted, the link name has " (deleted)" appended.
// Remove if there.
llvm::StringRef PathRef = ExePath;
PathRef.consume_back(" (deleted)");
if (!PathRef.empty()) {
process_info.GetExecutableFile().SetFile(PathRef, FileSpec::Style::native);
process_info.SetArchitecture(GetELFProcessCPUType(PathRef));
}
}
static void GetProcessEnviron(::pid_t pid, ProcessInstanceInfo &process_info) {
// Get the process environment.
auto BufferOrError = getProcFile(pid, "environ");
if (!BufferOrError)
return;
std::unique_ptr<llvm::MemoryBuffer> Environ = std::move(*BufferOrError);
llvm::StringRef Rest = Environ->getBuffer();
while (!Rest.empty()) {
llvm::StringRef Var;
std::tie(Var, Rest) = Rest.split('\0');
process_info.GetEnvironment().insert(Var);
}
}
static bool GetProcessAndStatInfo(::pid_t pid,
ProcessInstanceInfo &process_info,
ProcessState &State, ::pid_t &tracerpid) {
tracerpid = 0;
process_info.Clear();
process_info.SetProcessID(pid);
GetExePathAndArch(pid, process_info);
GetProcessArgs(pid, process_info);
GetProcessEnviron(pid, process_info);
// Get User and Group IDs and get tracer pid.
if (!GetStatusInfo(pid, process_info, State, tracerpid))
return false;
return true;
}