104 lines
2.1 KiB
C
104 lines
2.1 KiB
C
/*
|
|
* This file is part of the UCB release of Plan 9. It is subject to the license
|
|
* terms in the LICENSE file found in the top-level directory of this
|
|
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
|
* part of the UCB release of Plan 9, including this file, may be copied,
|
|
* modified, propagated, or distributed except according to the terms contained
|
|
* in the LICENSE file.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <lib9.h>
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprint(2, "usage: %s [-dR] [-p perm] [-P patternfile] [-e exportfs] srvname path\n", argv0);
|
|
exits("usage");
|
|
}
|
|
|
|
void
|
|
main(int argc, char **argv)
|
|
{
|
|
char *ename, *arglist[16], **argp;
|
|
int n, fd, pipefd[2];
|
|
char buf[64];
|
|
int perm = 0600;
|
|
|
|
argp = arglist;
|
|
ename = "/cmd/exportfs";
|
|
*argp++ = "exportfs";
|
|
ARGBEGIN{
|
|
default:
|
|
usage();
|
|
case 'd':
|
|
*argp++ = "-d";
|
|
break;
|
|
case 'e':
|
|
ename = EARGF(usage());
|
|
break;
|
|
case 'p':
|
|
perm = strtol(EARGF(usage()), 0, 8);
|
|
break;
|
|
case 'P':
|
|
*argp++ = "-P";
|
|
*argp++ = EARGF(usage());
|
|
break;
|
|
case 'R':
|
|
*argp++ = "-R";
|
|
break;
|
|
}ARGEND
|
|
*argp = 0;
|
|
if(argc != 2)
|
|
usage();
|
|
|
|
if(pipe(pipefd) < 0){
|
|
fprint(2, "can't pipe: %r\n");
|
|
exits("pipe");
|
|
}
|
|
|
|
switch(sys_rfork(RFPROC|RFNOWAIT|RFNOTEG|RFFDG)){
|
|
case -1:
|
|
fprint(2, "can't rfork: %r\n");
|
|
exits("rfork");
|
|
case 0:
|
|
dup(pipefd[0], 0);
|
|
dup(pipefd[0], 1);
|
|
sys_close(pipefd[0]);
|
|
sys_close(pipefd[1]);
|
|
sys_exec(ename, (const char**)arglist);
|
|
fprint(2, "can't exec exportfs: %r\n");
|
|
exits("exec");
|
|
default:
|
|
break;
|
|
}
|
|
sys_close(pipefd[0]);
|
|
if(fprint(pipefd[1], "%s", argv[1]) < 0){
|
|
fprint(2, "can't write pipe: %r\n");
|
|
exits("write");
|
|
}
|
|
n = jehanne_read(pipefd[1], buf, sizeof buf-1);
|
|
if(n < 0){
|
|
fprint(2, "can't read pipe: %r\n");
|
|
exits("read");
|
|
}
|
|
buf[n] = 0;
|
|
if(n != 2 || strcmp(buf, "OK") != 0){
|
|
fprint(2, "not OK (%d): %s\n", n, buf);
|
|
exits("OK");
|
|
}
|
|
if(argv[0][0] == '/')
|
|
strecpy(buf, buf+sizeof buf, argv[0]);
|
|
else
|
|
snprint(buf, sizeof buf, "/srv/%s", argv[0]);
|
|
fd = ocreate(buf, OWRITE, perm);
|
|
if(fd < 0){
|
|
fprint(2, "can't create %s: %r\n", buf);
|
|
exits("create");
|
|
}
|
|
fprint(fd, "%d", pipefd[1]);
|
|
sys_close(fd);
|
|
sys_close(pipefd[1]);
|
|
exits(0);
|
|
}
|