Function unlock_file

src/files.c:2415–2456

unlock file, which must be currently locked by lock_file */

/* unlock file, which must be currently locked by lock_file */
void
unlock_file(const char *filename)
{
#ifndef USE_FCNTL
    char locknambuf[BUFSZ];
    const char *lockname;
#endif

    if (gn.nesting == 1) {
#ifdef USE_FCNTL
        sflock.l_type = F_UNLCK;
        if (lockfd >= 0) {
            if (fcntl(lockfd, F_SETLK, &sflock) == -1)
                HUP raw_printf("Can't remove fcntl lock on %s.", filename);
            (void) close(lockfd), lockfd = -1;
        }
#else
        lockname = make_lockname(filename, locknambuf);
#ifndef NO_FILE_LINKS /* LOCKDIR should be subsumed by LOCKPREFIX */
        lockname = fqname(lockname, LOCKPREFIX, 2);
#endif

#if defined(UNIX) || defined(VMS)
        if (unlink(lockname) < 0)
            HUP raw_printf("Can't unlink %s.", lockname);
#ifdef NO_FILE_LINKS
        (void) nhclose(lockfd), lockfd = -1;
#endif

#endif /* UNIX || VMS */

#if defined(AMIGA) || defined(WIN32) || defined(MSDOS)
        if (gl.lockptr)
            Close(gl.lockptr);
        DeleteFile(lockname);
        gl.lockptr = 0;
#endif /* AMIGA || WIN32 || MSDOS */
#endif /* USE_FCNTL */
    }

    gn.nesting--;
}

#undef UNUSED_conditional