27a83106f4
The initial protocol handling in exportfs for cpu and import services is a huge mess. Saparate the code out into its own program with its own oexportfs(4) manpage.
80 lines
1.4 KiB
C
80 lines
1.4 KiB
C
#include <u.h>
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#include <libc.h>
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static void
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usage(void)
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{
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fprint(2, "usage: %s [-dR] [-p perm] [-P patternfile] [-e exportfs] srvname path\n", argv0);
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exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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char *ename, *arglist[16], **argp;
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int fd, pipefd[2];
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char buf[64];
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int perm = 0600;
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argp = arglist;
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ename = "/bin/exportfs";
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*argp++ = "exportfs";
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ARGBEGIN{
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default:
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usage();
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case 'd':
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*argp++ = "-d";
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break;
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case 'e':
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ename = EARGF(usage());
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break;
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case 'p':
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perm = strtol(EARGF(usage()), 0, 8);
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break;
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case 'P':
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*argp++ = "-P";
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*argp++ = EARGF(usage());
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break;
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case 'R':
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*argp++ = "-R";
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break;
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}ARGEND
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if(argc != 2)
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usage();
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*argp++ = "-r";
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*argp++ = argv[1];
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*argp = 0;
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if(pipe(pipefd) < 0){
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fprint(2, "can't pipe: %r\n");
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exits("pipe");
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}
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if(argv[0][0] == '/')
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strecpy(buf, buf+sizeof buf, argv[0]);
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else
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snprint(buf, sizeof buf, "/srv/%s", argv[0]);
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fd = create(buf, OWRITE|ORCLOSE, perm);
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if(fd < 0){
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fprint(2, "can't create %s: %r\n", buf);
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exits("create");
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}
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fprint(fd, "%d", pipefd[1]);
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close(pipefd[1]);
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switch(rfork(RFPROC|RFNOWAIT|RFNOTEG|RFFDG)){
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case -1:
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fprint(2, "can't rfork: %r\n");
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exits("rfork");
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case 0:
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dup(pipefd[0], 0);
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dup(pipefd[0], 1);
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close(pipefd[0]);
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exec(ename, arglist);
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fprint(2, "can't exec exportfs: %r\n");
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exits("exec");
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default:
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break;
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}
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exits(0);
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}
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