diff options
Diffstat (limited to 'usr/src/lib/libast/common/comp/execve.c')
| -rw-r--r-- | usr/src/lib/libast/common/comp/execve.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/comp/execve.c b/usr/src/lib/libast/common/comp/execve.c new file mode 100644 index 0000000000..057821298f --- /dev/null +++ b/usr/src/lib/libast/common/comp/execve.c @@ -0,0 +1,70 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +#include <ast.h> + +#if _lib_execve + +NoN(execve) + +#else + +#include <sig.h> +#include <wait.h> +#include <error.h> + +static pid_t childpid; + +static void +execsig(int sig) +{ + kill(childpid, sig); + signal(sig, execsig); +} + +#if defined(__EXPORT__) +#define extern __EXPORT__ +#endif + +extern int +execve(const char* path, char* const argv[], char* const arge[]) +{ + int status; + + if ((childpid = spawnve(path, argv, arge)) < 0) + return(-1); + for (status = 0; status < 64; status++) + signal(status, execsig); + while (waitpid(childpid, &status, 0) == -1) + if (errno != EINTR) return(-1); + if (WIFSIGNALED(status)) + { + signal(WTERMSIG(status), SIG_DFL); + kill(getpid(), WTERMSIG(status)); + pause(); + } + else status = WEXITSTATUS(status); + exit(status); +} + +#endif |