diff options
Diffstat (limited to 'usr/src/lib/libast/common/preroot/setpreroot.c')
| -rw-r--r-- | usr/src/lib/libast/common/preroot/setpreroot.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/preroot/setpreroot.c b/usr/src/lib/libast/common/preroot/setpreroot.c new file mode 100644 index 0000000000..5863d14d28 --- /dev/null +++ b/usr/src/lib/libast/common/preroot/setpreroot.c @@ -0,0 +1,75 @@ +/*********************************************************************** +* * +* 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 +/* + * 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(buf, cmd, NiL, PATH_ABSOLUTE|PATH_REGULAR|PATH_EXECUTE)))) + { + argc = 3; + for (ap = argv; *ap++; argc++); + if (av = newof(0, char*, argc, 0)) + { + ap = av; + *ap++ = PR_COMMAND; + *ap++ = 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 |