| /* insmod.c - Load a module into the Linux kernel. |
| * |
| * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com> |
| |
| USE_INSMOD(NEWTOY(insmod, "<1", TOYFLAG_SBIN|TOYFLAG_NEEDROOT)) |
| |
| config INSMOD |
| bool "insmod" |
| default y |
| help |
| usage: insmod MODULE [OPTION...] |
| |
| Load the module named MODULE passing options if given. |
| */ |
| |
| #include "toys.h" |
| |
| void insmod_main(void) |
| { |
| int fd = xopenro(*toys.optargs); |
| int i, rc; |
| |
| i = 1; |
| while (toys.optargs[i] && |
| strlen(toybuf) + strlen(toys.optargs[i]) + 2 < sizeof(toybuf)) |
| { |
| strcat(toybuf, toys.optargs[i++]); |
| strcat(toybuf, " "); |
| } |
| |
| // finit_module doesn't work on stdin, so we fall back to init_module... |
| rc = syscall(SYS_finit_module, fd, toybuf, 0); |
| if (rc && (fd == 0 || errno == ENOSYS)) { |
| off_t len = 0; |
| char *path = !strcmp(*toys.optargs, "-") ? "/dev/stdin" : *toys.optargs; |
| char *buf = readfileat(AT_FDCWD, path, NULL, &len); |
| |
| if (!buf) perror_exit("couldn't read %s", path); |
| rc = syscall(SYS_init_module, buf, len, toybuf); |
| if (CFG_TOYBOX_FREE) free(buf); |
| } |
| |
| if (rc) perror_exit("failed to load %s", toys.optargs[0]); |
| |
| if (CFG_TOYBOX_FREE) close(fd); |
| } |