diff --git a/sys/dev/efidev/efidev.c b/sys/dev/efidev/efidev.c index b585db4f0117..303b10c1d0ba 100644 --- a/sys/dev/efidev/efidev.c +++ b/sys/dev/efidev/efidev.c @@ -1,220 +1,212 @@ /*- * Copyright (c) 2016 Netflix, Inc. * * 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 * in this position and unchanged. * 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 ``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 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include static d_ioctl_t efidev_ioctl; static struct cdevsw efi_cdevsw = { .d_name = "efi", .d_version = D_VERSION, .d_ioctl = efidev_ioctl, }; static int efidev_ioctl(struct cdev *dev __unused, u_long cmd, caddr_t addr, int flags __unused, struct thread *td __unused) { int error; switch (cmd) { - case EFIIOC_GET_TABLE: - { - struct efi_get_table_ioc *egtioc = - (struct efi_get_table_ioc *)addr; - - error = efi_get_table(&egtioc->uuid, &egtioc->ptr); - break; - } case EFIIOC_GET_TIME: { struct efi_tm *tm = (struct efi_tm *)addr; error = efi_get_time(tm); break; } case EFIIOC_SET_TIME: { struct efi_tm *tm = (struct efi_tm *)addr; error = efi_set_time(tm); break; } case EFIIOC_VAR_GET: { struct efi_var_ioc *ev = (struct efi_var_ioc *)addr; void *data; efi_char *name; data = malloc(ev->datasize, M_TEMP, M_WAITOK); name = malloc(ev->namesize, M_TEMP, M_WAITOK); error = copyin(ev->name, name, ev->namesize); if (error) goto vg_out; if (name[ev->namesize / sizeof(efi_char) - 1] != 0) { error = EINVAL; goto vg_out; } error = efi_var_get(name, &ev->vendor, &ev->attrib, &ev->datasize, data); if (error == 0) { error = copyout(data, ev->data, ev->datasize); } else if (error == EOVERFLOW) { /* * Pass back the size we really need, but * convert the error to 0 so the copyout * happens. datasize was updated in the * efi_var_get call. */ ev->data = NULL; error = 0; } vg_out: free(data, M_TEMP); free(name, M_TEMP); break; } case EFIIOC_VAR_NEXT: { struct efi_var_ioc *ev = (struct efi_var_ioc *)addr; efi_char *name; name = malloc(ev->namesize, M_TEMP, M_WAITOK); error = copyin(ev->name, name, ev->namesize); if (error) goto vn_out; /* Note: namesize is the buffer size, not the string lenght */ error = efi_var_nextname(&ev->namesize, name, &ev->vendor); if (error == 0) { error = copyout(name, ev->name, ev->namesize); } else if (error == EOVERFLOW) { ev->name = NULL; error = 0; } vn_out: free(name, M_TEMP); break; } case EFIIOC_VAR_SET: { struct efi_var_ioc *ev = (struct efi_var_ioc *)addr; void *data = NULL; efi_char *name; /* datasize == 0 -> delete (more or less) */ if (ev->datasize > 0) data = malloc(ev->datasize, M_TEMP, M_WAITOK); name = malloc(ev->namesize, M_TEMP, M_WAITOK); if (ev->datasize) { error = copyin(ev->data, data, ev->datasize); if (error) goto vs_out; } error = copyin(ev->name, name, ev->namesize); if (error) goto vs_out; if (name[ev->namesize / sizeof(efi_char) - 1] != 0) { error = EINVAL; goto vs_out; } error = efi_var_set(name, &ev->vendor, ev->attrib, ev->datasize, data); vs_out: free(data, M_TEMP); free(name, M_TEMP); break; } default: error = ENOTTY; break; } return (error); } static struct cdev *efidev; static int efidev_modevents(module_t m, int event, void *arg __unused) { struct make_dev_args mda; int error; switch (event) { case MOD_LOAD: /* * If we have no efi environment, then don't create the device. */ if (efi_rt_ok() != 0) return (0); make_dev_args_init(&mda); mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; mda.mda_devsw = &efi_cdevsw; mda.mda_uid = UID_ROOT; mda.mda_gid = GID_WHEEL; mda.mda_mode = 0700; error = make_dev_s(&mda, &efidev, "efi"); return (error); case MOD_UNLOAD: if (efidev != NULL) destroy_dev(efidev); efidev = NULL; return (0); case MOD_SHUTDOWN: return (0); default: return (EOPNOTSUPP); } } static moduledata_t efidev_moddata = { .name = "efidev", .evhand = efidev_modevents, .priv = NULL, }; DECLARE_MODULE(efidev, efidev_moddata, SI_SUB_DRIVERS, SI_ORDER_ANY); MODULE_VERSION(efidev, 1); MODULE_DEPEND(efidev, efirt, 1, 1, 1); diff --git a/sys/sys/efiio.h b/sys/sys/efiio.h index 87fed9c3afd8..e5a0763536a3 100644 --- a/sys/sys/efiio.h +++ b/sys/sys/efiio.h @@ -1,58 +1,51 @@ /*- * Copyright (c) 2016 Netflix, Inc. * * 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 * in this position and unchanged. * 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 ``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 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. * * $FreeBSD$ */ #ifndef _SYS_EFIIO_H_ #define _SYS_EFIIO_H_ #include #include #include -struct efi_get_table_ioc -{ - struct uuid uuid; /* UUID to look up */ - void *ptr; /* Pointer to table in KVA space */ -}; - struct efi_var_ioc { efi_char *name; /* User pointer to name, in wide chars */ size_t namesize; /* Number of wide characters in name */ struct uuid vendor; /* Vendor's UUID for variable */ uint32_t attrib; /* Attributes */ void *data; /* User pointer to the data */ size_t datasize; /* Number of *bytes* in the data */ }; -#define EFIIOC_GET_TABLE _IOWR('E', 1, struct efi_get_table_ioc) #define EFIIOC_GET_TIME _IOR('E', 2, struct efi_tm) #define EFIIOC_SET_TIME _IOW('E', 3, struct efi_tm) #define EFIIOC_VAR_GET _IOWR('E', 4, struct efi_var_ioc) #define EFIIOC_VAR_NEXT _IOWR('E', 5, struct efi_var_ioc) #define EFIIOC_VAR_SET _IOWR('E', 6, struct efi_var_ioc) #endif /* _SYS_EFIIO_H_ */