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author | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
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committer | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
commit | 3950ffe2a485479f6561c27364d3d7df5a21d124 (patch) | |
tree | 468c6e14449d1b1e279222ec32f676b0311917d2 /src/lib/libast/comp/execvpe.c | |
download | ksh-upstream.tar.gz |
Imported Upstream version 93u+upstream
Diffstat (limited to 'src/lib/libast/comp/execvpe.c')
-rw-r--r-- | src/lib/libast/comp/execvpe.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/lib/libast/comp/execvpe.c b/src/lib/libast/comp/execvpe.c new file mode 100644 index 0000000..c711c50 --- /dev/null +++ b/src/lib/libast/comp/execvpe.c @@ -0,0 +1,78 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* 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_lib.h> + +#if _lib_execvpe + +#include <ast.h> + +NoN(execvpe) + +#else + +#if defined(__EXPORT__) +__EXPORT__ int execvpe(const char*, char* const[], char* const[]); +#endif + +#include <ast.h> +#include <errno.h> + +#if defined(__EXPORT__) +#define extern __EXPORT__ +#endif + +extern int +execvpe(const char* name, char* const argv[], char* const envv[]) +{ + register const char* path = name; + char buffer[PATH_MAX]; + + if (*path != '/' && !(path = pathpath(name, NULL, PATH_REGULAR|PATH_EXECUTE, buffer, sizeof(buffer)))) + path = name; + execve(path, argv, envv); + if (errno == ENOEXEC) + { + register char** newargv; + register char** ov; + register char** nv; + + for (ov = (char**)argv; *ov++;); + if (newargv = newof(0, char*, ov + 1 - (char**)argv, 0)) + { + nv = newargv; + *nv++ = "sh"; + *nv++ = (char*)path; + ov = (char**)argv; + while (*nv++ = *++ov); + path = pathshell(); + execve(path, newargv, envv); + free(newargv); + } + else + errno = ENOMEM; + } + return -1; +} + +#endif |