6437624 RFE: Add ksh93 (as /usr/bin/ksh93) and libshell.so to OS/Net

6505835 AST tools and library (libpp) required for creating l10n messages for ksh93
PSARC/2006/550 Korn Shell 93 Integration
PSARC/2006/587 /etc/ksh.kshrc for ksh93
PSARC/2007/035 ksh93 Amendments
Contributed by Roland Mainz <roland.mainz@nrubsig.org>

--HG--
rename : usr/src/lib/libcmd/common/mapfile-vers => deleted_files/usr/src/lib/libcmd/common/mapfile-vers
rename : usr/src/lib/libcmd/common/placeholder.c => deleted_files/usr/src/lib/libcmd/common/placeholder.c

1 files changed, 78 insertions, 0 deletions

diff --git a/usr/src/lib/libast/common/comp/execvpe.c b/usr/src/lib/libast/common/comp/execvpe.c
new file mode 100644
index 0000000000..4c189c8059
--- /dev/null
+++ b/usr/src/lib/libast/common/comp/execvpe.c
@@ -0,0 +1,78 @@
+/***********************************************************************
+*                                                                      *
+*               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_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(buffer, name, NULL, PATH_REGULAR|PATH_EXECUTE)))
+		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