/usr/include/bobcat/process is in libbobcat-dev 2.20.01-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define INCLUDED_BOBCAT_PROCESS_
#include <string>
#include <ostream>
#include <istream>
#include <bobcat/fork>
#include <bobcat/string>
#include <bobcat/pipe>
#include <bobcat/selector>
#include <bobcat/ifdstreambuf>
#include <bobcat/ofdstreambuf>
#include <bobcat/iostream>
#if defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
#ifndef BOBCAT_DIY_CLOEXEC_
#define BOBCAT_DIY_CLOEXEC_
#endif
#endif
namespace FBB
{
class Process: private Fork, public IOStream
{
friend Process &operator|(Process &lhs, Process &rhs);
public:
enum ProcessType
{
NO_PATH,
USE_PATH,
USE_SHELL
};
private:
bool d_active;
size_t d_mode;
size_t d_timeLimit; // seconds allowed to child-process
ProcessType d_processType;
size_t d_setMode; // these values are set by the
size_t d_setTimeLimit; // set members and used as
ProcessType d_setProcessType; // defaults unless overridden by
// actual values
// Constructors set these values
// too.
std::string d_command;
Pipe d_oChildInPipe; // cin read by the CHILD
Pipe d_iChildOutPipe; // cout written by the CHILD
Pipe d_iChildErrPipe; // cerr written by the CHILD
OFdStreambuf d_oChildInbuf; // Child extracts,
IFdStreambuf d_iChildOutbuf; // Child inserts,
IFdStreambuf d_iChildErrbuf; // Child inserts
std::ostream d_oChildIn; // Parent inserts to child's cin
std::istream d_iChildOut; // Parent extracts child's cout
std::istream d_iChildErr; // Parent extracts child's cerr
Selector d_selector; // senses activities on Child's
// out/err streams
struct RetPid
{
int ret;
pid_t pid;
RetPid();
};
RetPid d_child;
RetPid d_monitor;
#ifdef BOBCAT_DIY_CLOEXEC_
int d_closedByChild; // DIY CLOSE_ON_EXEC
#endif
public:
enum IOMode
{
IGNORE_ALL = 0,
STD = 0,
CIN = 1 << 0,
COUT = 1 << 1,
CERR = 1 << 2,
IGNORE_COUT = 1 << 3,
IGNORE_CERR = 1 << 4,
MERGE_COUT_CERR = 1 << 5,
DIRECT = 1 << 8,
// flags below are Internal Use Only and cannot be set by
// users
IN_PIPE = 1 << 10,
OUT_PIPE = 1 << 11,
CLOSE_ON_EXEC = 1 << 12,
};
typedef size_t iomode;
enum ChildOutput
{
NOTHING_AVAILABLE = 0,
CHILD_COUT = 1 << 0,
CHILD_CERR = 1 << 1,
};
explicit Process(std::string const &command = ""); // 1
explicit Process(iomode mode, std::string const &command = ""); // 2
Process(iomode mode, ProcessType type, // 3
std::string const &command = "");
Process(iomode mode, ProcessType type, size_t timeLimit, // 4
std::string const &command = "");
virtual ~Process(); // stop()s any ongoing process
iomode ioMode() const; // returns default IOMode
ProcessType processType() const; // returns default ProcessType
size_t timeLimit() const; // returns default time limit
void setIOMode(iomode mode); // change IOMode
void setProcessType(ProcessType type);
void setTimeLimit(size_t timeLimit); // for the next cmd to start
// 0 means: no time monitor
void setCommand(std::string const &command); // sets cmd,
// eats backticks
Process &operator+=(std::string const &text); // adds to the command
void start();
void start(iomode mode);
void start(iomode mode, ProcessType type);
void start(iomode mode, ProcessType type, size_t timeLimit);
void system(); // calls /bin/sh -c cmd; shell redirs OK
void system(iomode mode);
void system(iomode mode, size_t timeLimit);
int operator=(std::string const &cmd); // sets and starts a command
std::string const &str() const; // current command
int stop(); // terminate a running childprocess
template <typename Type>
Process &operator<<(Type const &value);
Process &operator<<(std::ostream &(*pf)(std::ostream &));
template <typename Type>
Process &operator>>(Type &value);
bool active();
Process &operator()(iomode mode);
Process &operator()(iomode mode, ProcessType type);
Process &operator()(iomode mode, ProcessType type, size_t timeLimit);
void close(); // closes input to the child
std::istream &cerr(); // READ cerr from the child
size_t available(); // returns ChildOutput bit_or
// (cf. manpage)
void showMode(char const *lab);
using Fork::waitForChild;
private:
Process(Process const &other) = delete;
Process &operator=(Process const &other) = delete;
virtual void childProcess();
virtual void childRedirections();
virtual void parentProcess();
virtual void parentRedirections();
void newPipe(Pipe &pipe);
pid_t discontinue(RetPid &proc);
size_t whichStream();
void close(int fd);
void closeWriteFd(Pipe &pipe);
void closeReadFd(Pipe &pipe);
void forking();
void initialize(size_t timeLimit, iomode mode,
ProcessType processType);
iomode sanitizeIOMode(iomode mode);
void newPipes();
void closeChildInputOnExec();
struct ExecContext
{
bool ok; // true: status is ok
size_t argc; // must eventually be at least 1
char const *message; // only set if !ok
char const **args; // 0-terminated array of pointers to the
// arguments
};
static void execContext(String::SplitPair const &splitPair,
ExecContext &ec);
ExecContext analyzeCommand();
};
inline void Process::start()
{
start(d_setMode, d_setProcessType, d_setTimeLimit);
}
inline void Process::start(iomode mode)
{
start(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC),
d_setProcessType, d_setTimeLimit);
}
inline void Process::start(iomode mode, ProcessType type)
{
start(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC), type, d_setTimeLimit);
}
template <typename Type>
Process &Process::operator<<(Type const &value)
{
if (active())
dynamic_cast<std::ostream &>(*this) << value;
return *this;
}
template <typename Type>
Process &Process::operator>>(Type &value)
{
if ((available() & CHILD_COUT) || active())
dynamic_cast<std::istream &>(*this) >> value;
return *this;
}
inline std::string const &Process::str() const
{
return d_command;
}
inline void Process::system()
{
start(d_mode, USE_SHELL, d_timeLimit);
}
inline void Process::system(iomode mode)
{
start(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC),
USE_SHELL, d_timeLimit);
}
inline void Process::system(iomode mode, size_t timeLimit)
{
start(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC), USE_SHELL, timeLimit);
}
inline Process &Process::operator+=(std::string const &command)
{
d_command += command;
return *this;
}
inline void Process::setCommand(std::string const &command)
{
d_command = command;
}
inline void Process::setProcessType(ProcessType type)
{
d_setProcessType = d_processType = type;
}
inline void Process::setTimeLimit(size_t timeLimit)
{
d_setTimeLimit = d_timeLimit = timeLimit;
}
inline void Process::setIOMode(iomode mode)
{
d_setMode = sanitizeIOMode(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC));
}
inline Process &Process::operator()(iomode mode)
{
return operator()(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC),
d_setProcessType, d_setTimeLimit);
}
inline Process &Process::operator()(iomode mode, ProcessType type)
{
return operator()(mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC),
type, d_setTimeLimit);
}
inline Process::iomode Process::ioMode() const
{
return d_mode & ~(IN_PIPE | OUT_PIPE | CLOSE_ON_EXEC);
}
inline Process::ProcessType Process::processType() const
{
return d_setProcessType;
}
inline size_t Process::timeLimit() const
{
return d_setTimeLimit;
}
} // FBB
#endif
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