81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/* $OpenBSD: unshlight.c,v 1.3 2009/04/01 16:24:05 jasper Exp $ */
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <err.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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static void usage(void);
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int
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main(int argc, char** argv)
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{
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struct statfs* mntbuf;
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int mntcount, i;
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int aflag=0;
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int ch;
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while ( (ch = getopt(argc, argv, "a")) != -1) {
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switch (ch) {
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case 'a':
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aflag=1;
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (aflag && argc != 0)
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usage();
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if (!aflag && argc == 0)
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usage();
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for (; argc>0 || aflag; aflag?(void)(aflag=0):(void)(argc--, argv++)) {
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char abspath[MAXPATHLEN];
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pid_t pid=0;
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if (argc > 0) {
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if (realpath(argv[0], abspath) == 0) {
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warn(abspath);
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continue;
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}
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}
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mntcount=getmntinfo(&mntbuf, MNT_NOWAIT);
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if (mntcount < 0)
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err(EX_OSERR, "getmntinfo");
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for (i=0; i<mntcount; i++) {
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char* s;
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int error;
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if (argc > 0 && strcmp(abspath, mntbuf[i].f_mntonname) != 0) continue;
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#if (defined(__FreeBSD_version) && __FreeBSD_version > 300000) || defined(__OpenBSD__)
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if (strcmp(mntbuf[i].f_fstypename, "nfs") != 0) continue;
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#else
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if (mntbuf[i].f_type != MOUNT_NFS) continue;
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#endif
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if (strncmp(mntbuf[i].f_mntfromname, "shlight-", 8) != 0) continue;
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pid=strtoul(mntbuf[i].f_mntfromname+8, &s, 10);
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if (*s) continue;
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error = unmount (mntbuf[i].f_mntonname, 0);
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if (error == 0) {
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kill (pid, SIGHUP);
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} else {
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warn(mntbuf[i].f_mntonname);
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}
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}
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if (argc > 0 && !pid)
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warnx("%s: not currently mounted", abspath);
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}
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}
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void
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usage(void)
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{
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errx(EX_USAGE, "Usage: unshlight [-a] [node]");
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}
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