diff options
Diffstat (limited to 'sys/boot/common/module.c')
| -rw-r--r-- | sys/boot/common/module.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/sys/boot/common/module.c b/sys/boot/common/module.c new file mode 100644 index 0000000..7f56e71 --- /dev/null +++ b/sys/boot/common/module.c @@ -0,0 +1,129 @@ +/*- + * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id$ + */ + +/* + * module function dispatcher, support, etc. + * + * XXX need a 'searchmodule' function that takes a name and + * traverses a search path. + */ + +#include <stand.h> +#include <string.h> + +#include "bootstrap.h" + +/* Initially determined from kernel load address */ +static vm_offset_t loadaddr = 0; + +struct loaded_module *loaded_modules = NULL; + +COMMAND_SET(load, "load", "load a kernel or module", command_load); + +static int +command_load(int argc, char *argv[]) +{ + return(mod_load(argv[1], argc - 2, argv + 2)); +} + +COMMAND_SET(lsmod, "lsmod", "list loaded modules", command_lsmod); + +static int +command_lsmod(int argc, char *argv[]) +{ + struct loaded_module *am; + char lbuf[80]; + + pager_open(); + for (am = loaded_modules; (am != NULL); am = am->m_next) { + sprintf(lbuf, " %p: %s (%s, 0x%x)\n", + am->m_addr, am->m_name, am->m_type, am->m_size); + pager_output(lbuf); + if (am->m_args != NULL) { + pager_output(" args: "); + pager_output(am->m_args); + pager_output("\n"); + } + } + pager_close(); + return(CMD_OK); +} + +int +mod_load(char *name, int argc, char *argv[]) +{ + struct loaded_module *am, *cm; + int i, err; + + for (i = 0, am = NULL; (module_formats[i] != NULL) && (am == NULL); i++) { + /* XXX call searchmodule() to search for module (name) */ + if ((err = (module_formats[i]->l_load)(name, loadaddr, &am)) != 0) { + + /* Unknown to this handler? */ + if (err == EFTYPE) + continue; + + /* Fatal error */ + sprintf(command_errbuf, "can't load module '%s': %s", name, strerror(err)); + return(CMD_ERROR); + } + } + if (am == NULL) { + sprintf(command_errbuf, "can't work out what to do with '%s'", name); + return(CMD_ERROR); + } + /* where can we put the next one? */ + loadaddr = am->m_addr + am->m_size; + + /* Load was OK, set args */ + am->m_args = unargv(argc, argv); + + /* Append to list of loaded modules */ + am->m_next = NULL; + if (loaded_modules == NULL) { + loaded_modules = am; + } else { + for (cm = loaded_modules; cm->m_next != NULL; cm = cm->m_next) + ; + cm->m_next = am; + } + return(CMD_OK); +} + +struct loaded_module * +mod_findmodule(char *name, char *type) +{ + struct loaded_module *mp; + + for (mp = loaded_modules; mp != NULL; mp = mp->m_next) { + if (((name == NULL) || !strcmp(name, mp->m_name)) && + ((type == NULL) || !strcmp(type, mp->m_type))) + break; + } + return(mp); +} |
