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/* $Id$
*
* Original version of this file from p3nfsd-5.4 by
* Rudolf Koenig (rfkoenig@immd4.informatik.uni-erlangen.de)
*
* Modifications for plputils by Fritz Elfert <felfert@to.com>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <OSdefs.h>
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include <stdarg.h>
#include <syslog.h>
#include <errno.h>
#include "nfs_prot.h"
#include "mp.h"
#if defined (__SVR4) || defined(__sgi)
#include <stdlib.h> /* getenv */
#include <string.h> /* strcmp */
#endif
#include <unistd.h> /* getuid */
#include <dirent.h>
#if defined(__NeXT__)
#include <sys/dir.h>
#include <unistd.h>
#define DIRENT struct direct
#else
#define DIRENT struct dirent
#endif
extern void nfs_program_2();
int debug, exiting, query_cache = 0;
time_t devcache_keep = 120;
time_t devcache_stamp = 0;
fattr root_fattr =
{
NFDIR, 0040500, 1, 0, 0,
BLOCKSIZE, BLOCKSIZE, FID, 1, FID, 1,
{0, 0},
{0, 0},
{0, 0}
};
#if defined(hpux) || defined(__SVR4) || defined(__sgi)
#ifndef sun
void
usleep(usec)
int usec;
{
struct timeval t;
t.tv_sec = (long) (usec / 1000000);
t.tv_usec = (long) (usec % 1000000);
select(0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &t);
}
#endif
#endif /* hpux */
int
debuglog(char *fmt, ...)
{
va_list ap;
char *buf;
if (!debug)
return 0;
buf = (char *)malloc(1024);
va_start(ap, fmt);
vsnprintf(buf, 1024, fmt, ap);
syslog(LOG_DEBUG, buf);
free(buf);
va_end(ap);
return 0;
}
int
errorlog(char *fmt, ...)
{
va_list ap;
char *buf = (char *)malloc(1024);
va_start(ap, fmt);
vsnprintf(buf, 1024, fmt, ap);
va_end(ap);
syslog(LOG_ERR, buf);
free(buf);
return 0;
}
int
infolog(char *fmt, ...)
{
va_list ap;
char *buf = (char *)malloc(1024);
va_start(ap, fmt);
vsnprintf(buf, 1024, fmt, ap);
syslog(LOG_INFO, buf);
free(buf);
va_end(ap);
return 0;
}
int force_cache_clean = 0;
int set_owner(char *user, int logstdio) {
struct passwd *pw = NULL;
if (user && *user) {
if (!(pw = getpwnam(user))) {
if (logstdio)
fprintf(stderr, "User %s not found.\n", user);
else
errorlog("User %s not found.\n", user);
endpwent();
return 1;
}
if (getuid() && pw->pw_uid != getuid()) {
if (logstdio)
fprintf(stderr, "Only root can set owner to someone other.\n");
else
errorlog("Only root can set owner to someone other.\n");
endpwent();
return 1;
}
} else {
if (!logstdio) {
errorlog("Request to change owner with empty argument.\n");
return 1;
}
if (!(pw = getpwuid(getuid()))) {
fprintf(stderr, "You don't exist, go away!\n");
endpwent();
return 1;
}
}
if (pw) {
if ((root_fattr.uid != pw->pw_uid) || (root_fattr.gid != pw->pw_gid)) {
struct group *g = getgrgid(pw->pw_gid);
char *gname = (g && g->gr_name && *(g->gr_name)) ? g->gr_name : "???";
root_fattr.uid = pw->pw_uid;
root_fattr.gid = pw->pw_gid;
if (logstdio)
printf("Owner set to %s.%s\n", pw->pw_name, gname);
else
infolog("Owner set to %s.%s\n", pw->pw_name, gname);
endgrent();
force_cache_clean = 1;
cache_flush();
}
}
endpwent();
return 0;
}
int
mp_main(int verbose, char *dir, char *user)
{
struct passwd *pw;
struct timeval tv;
struct timezone tz;
p_inode *rp;
nfs_fh root_fh;
DIR *dirp;
DIRENT *diep;
int i;
if (!(pw = getpwuid(getuid()))) {
fprintf(stderr, "You don't exist, go away!\n");
return 1;
}
if (!user) {
if (!(user = (char *) getenv("USER")))
user = (char *) getenv("logname");
}
endpwent();
if (set_owner(user, 1))
return 1;
gettimeofday(&tv, &tz);
debug = verbose;
if (debug)
printf("plpnfsd: version %s, mounting on %s ...\n", VERSION, dir);
/* Check if mountdir is empty (or else you can overmount e.g /etc)
It is done here, because exit hangs, if hardware flowcontrol is
not present. Bugreport Nov 28 1996 by Olaf Flebbe */
if (!(dirp = opendir(dir))) {
perror(dir);
return 1;
}
i = 0;
while ((diep = readdir(dirp)) != 0)
if (strcmp(diep->d_name, ".") && strcmp(diep->d_name, ".."))
i++;
closedir(dirp);
if (i) {
fprintf(stderr, "Sorry, directory %s is not empty, exiting.\n", dir);
return 1;
}
openlog("plpnfsd", LOG_PID|LOG_CONS, LOG_DAEMON);
rp = get_nam("");
inode2fh(rp->inode, root_fh.data);
root_fattr.fileid = rp->inode;
root_fattr.atime.seconds = root_fattr.mtime.seconds =
root_fattr.ctime.seconds = tv.tv_sec;
mount_and_run(dir, nfs_program_2, &root_fh);
return 0;
}
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