diff options
Diffstat (limited to 'usr.sbin/nvram/nvram.c')
| -rw-r--r-- | usr.sbin/nvram/nvram.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/usr.sbin/nvram/nvram.c b/usr.sbin/nvram/nvram.c deleted file mode 100644 index 9d56f9d..0000000 --- a/usr.sbin/nvram/nvram.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - * Copyright (c) 2006 Maxim Sobolev <sobomax@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 ``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. - * - * $FreeBSD$ - */ - -#include <sys/types.h> -#include <sys/uio.h> -#include <err.h> -#include <errno.h> -#include <fcntl.h> -#include <paths.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include <dev/powermac_nvram/powermac_nvramvar.h> - -#define DEVICE_NAME (_PATH_DEV "powermac_nvram") - -static void usage(void); -static int remove_var(uint8_t *, int, const char *); -static int append_var(uint8_t *, int, const char *, const char *); - -struct deletelist { - char *name; - struct deletelist *next; - struct deletelist *last; -}; - -int -main(int argc, char **argv) -{ - int opt, dump, fd, res, i, size; - uint8_t buf[NVRAM_SIZE], *cp, *common; - struct chrp_header *header; - struct deletelist *dl; - - dump = 0; - dl = NULL; - - while((opt = getopt(argc, argv, "d:p")) != -1) { - switch(opt) { - case 'p': - dump = 1; - break; - - case 'd': - if (dl == NULL) { - dl = malloc(sizeof(*dl)); - if (dl == NULL) - err(1, "malloc"); - bzero(dl, sizeof(*dl)); - dl->last = dl; - } else { - dl->last->next = malloc(sizeof(*dl)); - if (dl->last->next == NULL) - err(1, "malloc"); - dl->last = dl->last->next; - bzero(dl->last, sizeof(*dl)); - } - dl->last->name = optarg; - break; - - default: - usage(); - /* Not reached */ - } - } - argc -= optind; - argv += optind; - - if (argc == 0 && dump == 0 && dl == NULL) { - usage(); - /* Not reached */ - } - - fd = open(DEVICE_NAME, O_RDWR); - if (fd == -1) - err(1, DEVICE_NAME); - for (i = 0; i < (int)sizeof(buf);) { - res = read(fd, buf + i, sizeof(buf) - i); - if (res == -1 && errno != EINTR) - err(1, DEVICE_NAME); - if (res == 0) - break; - if (res > 0) - i += res; - } - if (i != sizeof(buf)) - errx(1, "%s: short read", DEVICE_NAME); - - /* Locate common block */ - size = 0; - for (cp = buf; cp < buf + sizeof(buf); cp += size) { - header = (struct chrp_header *)cp; - size = header->length * 0x10; - if (strncmp(header->name, "common", 7) == 0) - break; - } - if (cp >= buf + sizeof(buf) || size <= (int)sizeof(struct chrp_header)) - errx(1, "%s: no common block", DEVICE_NAME); - common = cp + sizeof(struct chrp_header); - size -= sizeof(struct chrp_header); - - if (dump != 0) { - while (size > 0) { - i = strlen(common) + 1; - if (i == 1) - break; - printf("%s\n", common); - size -= i; - common += i; - } - exit(0); - } - - for (;dl != NULL; dl = dl->next) { - if (remove_var(common, size, dl->name) == 0) - warnx("%s: no such variable", dl->name); - } - - for (; argc > 0; argc--, argv++) { - cp = strchr(*argv, '='); - if (cp == NULL) - errx(1, "%s: invalid argument", *argv); - cp[0] = '\0'; - cp++; - remove_var(common, size, *argv); - if (append_var(common, size, *argv, cp) == -1) - errx(1, "%s: error setting variable", *argv); - } - - for (i = 0; i < (int)sizeof(buf);) { - res = write(fd, buf + i, sizeof(buf) - i); - if (res == -1 && errno != EINTR) - err(1, DEVICE_NAME); - if (res == 0) - break; - if (res > 0) - i += res; - } - if (i != sizeof(buf)) - errx(1, "%s: short write", DEVICE_NAME); - if (close(fd) == -1) - err(1, DEVICE_NAME); - - exit(0); -} - -static void -usage(void) -{ - - fprintf(stderr, "usage: nvram [-p] | [-d name ...] [name=value ...]\n"); - exit(1); -} - -static int -remove_var(uint8_t *buf, int len, const char *var_name) -{ - int nremoved, i, name_len; - - nremoved = 0; - name_len = strlen(var_name); - while (len > 0) { - i = strlen(buf) + 1; - if (i == 1) - break; - if (strncmp(buf, var_name, name_len) == 0 && buf[name_len] == '=') { - memmove(buf, buf + i, len - i); - memset(buf + len - i, '\0', i); - nremoved += 1; - continue; - } - len -= i; - buf += i; - } - return nremoved; -} - -static int -append_var(uint8_t *buf, int len, const char *var_name, const char *var_value) -{ - int i, append_len; - - while (len > 0) { - i = strlen(buf) + 1; - if (i == 1) - break; - len -= i; - buf += i; - } - append_len = strlen(var_name) + strlen(var_value) + 2; - if (len < append_len) - return -1; - sprintf(buf, "%s=%s", var_name, var_value); - return 0; -} |
