diff options
Diffstat (limited to 'nix/libutil/util.hh')
| -rw-r--r-- | nix/libutil/util.hh | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/nix/libutil/util.hh b/nix/libutil/util.hh index ce2d77c19a..ad0d377a4f 100644 --- a/nix/libutil/util.hh +++ b/nix/libutil/util.hh @@ -7,6 +7,7 @@ #include <dirent.h> #include <unistd.h> #include <signal.h> +#include <functional> #include <cstdio> @@ -237,6 +238,7 @@ class Pid int killSignal; public: Pid(); + Pid(pid_t pid); ~Pid(); void operator =(pid_t pid); operator pid_t(); @@ -252,11 +254,18 @@ public: void killUser(uid_t uid); +/* Fork a process that runs the given function, and return the child + pid to the caller. */ +pid_t startProcess(std::function<void()> fun, const string & errorPrefix = "error: "); + + /* Run a program and return its stdout in a string (i.e., like the shell backtick operator). */ string runProgram(Path program, bool searchPath = false, const Strings & args = Strings()); +MakeError(ExecError, Error) + /* Close all file descriptors except stdin, stdout, stderr, and those listed in the given set. Good practice in child processes. */ void closeMostFDs(const set<int> & exceptions); @@ -264,9 +273,6 @@ void closeMostFDs(const set<int> & exceptions); /* Set the close-on-exec flag for the given file descriptor. */ void closeOnExec(int fd); -/* Call vfork() if available, otherwise fork(). */ -extern pid_t (*maybeVfork)(); - /* User interruption. */ |