/***********************************************************************
* *
* 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
/*
* AT&T Bell Laboratories
* force current command to run under dir preroot
*/
#include <ast.h>
#include <preroot.h>
#if FS_PREROOT
#include <option.h>
void
setpreroot(register char** argv, const char* dir)
{
register char* s;
register char** ap;
int argc;
char* cmd;
char** av;
char buf[PATH_MAX];
if ((argv || (argv = opt_info.argv)) && (dir || (dir = getenv(PR_BASE)) && *dir) && !ispreroot(dir) && (*(cmd = *argv++) == '/' || (cmd = pathpath(cmd, NiL, PATH_ABSOLUTE|PATH_REGULAR|PATH_EXECUTE, buf, sizeof(buf)))))
{
argc = 3;
for (ap = argv; *ap++; argc++);
if (av = newof(0, char*, argc, 0))
{
ap = av;
*ap++ = PR_COMMAND;
*ap++ = (char*)dir;
*ap++ = cmd;
while (*ap++ = *argv++);
if (!(s = getenv(PR_SILENT)) || !*s)
{
sfprintf(sfstderr, "+");
ap = av;
while (s = *ap++)
sfprintf(sfstderr, " %s", s);
sfprintf(sfstderr, "\n");
sfsync(sfstderr);
}
execv(*av, av);
free(av);
}
}
}
#else
NoN(setpreroot)
#endif