X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=exec.c;h=85dbaf9474aa286add74cd761f09d30dc74ad805;hp=bbf1b41addf8aab65363065c9e3b6ad91cae4968;hb=3622134825eb94882a8e99acc0ee1889fc0169d6;hpb=ebb0565e946770c5b83c4d28c1f674dffdeaf551 diff --git a/exec.c b/exec.c index bbf1b41a..85dbaf94 100644 --- a/exec.c +++ b/exec.c @@ -1,13 +1,12 @@ -/* - * Copyright (C) 2003-2008 Andre Noll - * - * Licensed under the GPL v2. For licencing details see COPYING. - */ +/* Copyright (C) 2003 Andre Noll , see file COPYING. */ /** \file exec.c Helper functions for spawning new processes. */ + +#include + #include "para.h" -#include "close_on_fork.h" #include "error.h" +#include "fd.h" #include "string.h" /** @@ -35,15 +34,18 @@ static int para_exec(pid_t *pid, const char *file, char *const *const args, int if (fds[2] > 0 && pipe(err) < 0) goto err_out; if (!fds[0] || !fds[1] || !fds[2]) { - ret = -E_NULL_OPEN; - null = open("/dev/null", O_RDONLY); - if (null < 0) + ret = para_open("/dev/null", O_RDWR, 42); + if (ret < 0) goto err_out; + null = ret; + } + ret = fork(); + if (ret < 0) { + ret = -ERRNO_TO_PARA_ERROR(errno); + goto err_out; } - if ((*pid = fork()) < 0) - exit(EXIT_FAILURE); + *pid = ret; if (!(*pid)) { /* child */ - close_listed_fds(); /* close unneeded fds */ if (fds[0] >= 0) { if (fds[0]) { close(in[1]); @@ -103,6 +105,7 @@ err_out: close(in[1]); if (null >= 0) close(null); + PARA_ERROR_LOG("%s\n", para_strerror(-ret)); return ret; } @@ -110,7 +113,7 @@ err_out: * Exec the given command. * * \param pid Will hold the pid of the created process upon return. - * \param cmdline Holds the command and its arguments, seperated by spaces. + * \param cmdline Holds the command and its arguments, separated by spaces. * \param fds A pointer to a value-result array. * * This function uses fork/exec to create a new process. \a fds must be a @@ -123,21 +126,19 @@ err_out: * - fd[i] > 0: create a pipe and dup i to one end of that pipe. * Upon return, fd[i] contains the file descriptor of the pipe. * - * In any case, all unneeded filedescriptors are closed. + * In any case, all unneeded file descriptors are closed. * * \return Standard. */ int para_exec_cmdline_pid(pid_t *pid, const char *cmdline, int *fds) { - int argc, ret; + int ret; char **argv; - char *tmp = para_strdup(cmdline); - if (!tmp) - exit(EXIT_FAILURE); - argc = split_args(tmp, &argv, " \t"); + ret = create_argv(cmdline, " \t", &argv); + if (ret < 0) + return ret; ret = para_exec(pid, argv[0], argv, fds); - free(argv); - free(tmp); + free_argv(argv); return ret; }