135 lines
2.7 KiB
C
135 lines
2.7 KiB
C
/* @(#)under.c 1.2 87/08/13 3.2/4.3NFSSRC */
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# ifdef lint
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static char sccsid[] = "@(#)under.c 1.1 86/09/25 Copyright 1985, 1987 Sun Microsystems, Inc.";
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/*
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*
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* NFSSRC 3.2/4.3 for the VAX*
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* Copyright (C) 1987 Sun Microsystems, Inc.
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*
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* (*)VAX is a trademark of Digital Equipment Corporation
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*
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*/
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# endif lint
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/*
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* under.c - program to execute a command under a given directory
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*
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* Copyright (c) 1985, 1987 Sun Microsystems, Inc.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <rpc/rpc.h>
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# include <sys/fs/nfs.h>
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#include <rpcsvc/mount.h>
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main(argc, argv)
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int argc;
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char **argv;
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{
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static char usage[] = "Usage: under dir command...\n";
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char *dir, *p;
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char *index();
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char hostname[255];
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char *tmpdir, *subdir, *parsefs();
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char dirbuf[1024];
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char error[1024];
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int status;
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int len;
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if (argc < 3) {
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fprintf(stderr, usage);
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exit(1);
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}
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gethostname(hostname, 255);
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strcat(hostname, ":/");
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len = strlen(hostname);
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dir = argv[1];
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if (strlen(dir) > len && strncmp(dir, hostname, len) == 0)
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dir = index(dir, ':') + 1;
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else if (p = index(dir, ':')) {
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if (p[1] != '/') {
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fprintf(stderr, "under: %s invalid name\n", dir);
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exit(1);
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}
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tmpdir = mktemp("/var/tmp_rex/underXXXXXX");
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if (mkdir(tmpdir, 0777)) {
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perror(tmpdir);
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exit(1);
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}
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subdir = parsefs(dir,error);
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if (subdir == NULL) {
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exit(1);
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}
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if (mount_nfs(dir, tmpdir, error)) {
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exit(1);
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}
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strcpy(dirbuf, tmpdir);
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strcat(dirbuf, "/");
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strcat(dirbuf, subdir);
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status = runcmd(dirbuf, argv[2], &argv[2]);
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if (umount_nfs(dir, tmpdir))
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fprintf(stderr, "under: couldn't umount %s\n", dir);
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rmdir(tmpdir);
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exit(status);
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}
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setgid(getgid());
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setuid(getuid());
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if (chdir(dir)) {
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perror(dir);
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exit(1);
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}
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execvp(argv[2], &argv[2]);
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perror(argv[2]);
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exit(1);
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}
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typedef void (*sig_t)();
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runcmd(dir, cmd, args)
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char *dir;
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char *cmd;
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char **args;
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{
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int pid, child, status;
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sig_t sigint, sigquit;
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sigint = (sig_t)signal(SIGINT, SIG_IGN);
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sigquit = (sig_t)signal(SIGQUIT, SIG_IGN);
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pid = fork();
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if (pid == -1)
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return (0177);
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if (pid == 0) {
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setgid(getgid());
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setuid(getuid());
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if (chdir(dir)) {
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perror(dir);
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exit(1);
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}
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(void) signal(SIGINT, sigint);
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(void) signal(SIGQUIT, sigquit);
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execvp(cmd, args);
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perror(cmd);
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exit(1);
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}
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while ((child = wait(&status)) != pid && child != -1)
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;
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(void) signal(SIGINT, sigint);
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(void) signal(SIGQUIT, sigquit);
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if (child == -1)
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return (0177);
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if (status & 0377)
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return (status & 0377);
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return ((status >> 8) & 0377);
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}
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/*
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* NFSSRC 3.2/4.3 for the VAX*
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* Copyright (C) 1987 Sun Microsystems, Inc.
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*
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* (*)VAX is a trademark of Digital Equipment Corporation
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*/
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