2 * Copyright (c) 2017-2019 Netflix, Inc.
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5 * modification, are permitted provided that the following conditions
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25 * $FreeBSD: head/usr.sbin/efivar/efiutil.c 344337 2019-02-20 05:19:16Z bcran $
30 #include <efivar-dp.h>
40 #include "libefivar_int.h"
43 * Dump the data as ASCII data, which is a pretty
47 asciidump(uint8_t *data, size_t datalen)
53 for (i = 0; i < datalen; i++) {
54 if (isprint(data[i])) {
60 printf("%c", data[i]);
67 printf("%%%02x", data[i]);
74 utf8dump(uint8_t *data, size_t datalen)
80 * NUL terminate the string. Not all strings need it, but some
81 * do and an extra NUL won't change what's printed.
83 ucs2 = malloc(datalen + sizeof(efi_char));
84 memcpy(ucs2, data, datalen);
85 ucs2[datalen / sizeof(efi_char)] = 0;
86 ucs2_to_utf8(ucs2, &utf8);
93 hexdump(uint8_t *data, size_t datalen)
97 for (i = 0; i < datalen; i++) {
101 printf("%04x: ", (int)i);
103 printf("%02x ", data[i]);
109 bindump(uint8_t *data, size_t datalen)
111 write(1, data, datalen);
114 #define LOAD_OPTION_ACTIVE 1
116 #define SIZE(dp, edp) (size_t)((intptr_t)(void *)edp - (intptr_t)(void *)dp)
119 efi_print_load_option(uint8_t *data, size_t datalen, int Aflag, int bflag, int uflag)
121 char *dev, *relpath, *abspath;
122 uint8_t *ep = data + datalen;
123 uint8_t *walker = data;
135 if (datalen < sizeof(attr) + sizeof(fplen) + sizeof(efi_char))
137 // First 4 bytes are attribute flags
138 attr = le32dec(walker);
139 walker += sizeof(attr);
140 // Next two bytes are length of the file paths
141 fplen = le16dec(walker);
142 walker += sizeof(fplen);
143 // Next we have a 0 terminated UCS2 string that we know to be aligned
144 descr = (efi_char *)(intptr_t)(void *)walker;
145 len = ucs2len(descr); // XXX need to sanity check that len < (datalen - (ep - walker) / 2)
146 walker += (len + 1) * sizeof(efi_char);
149 // Now we have fplen bytes worth of file path stuff
155 // Everything left is the binary option args
157 optlen = ep - walker;
158 // We got to here, everything is good
159 printf("%c ", attr & LOAD_OPTION_ACTIVE ? '*' : ' ');
160 ucs2_to_utf8(descr, &str);
163 while (dp < edp && SIZE(dp, edp) > sizeof(efidp_header)) {
164 efidp_format_device_path(buf, sizeof(buf), dp, SIZE(dp, edp));
165 rv = efivar_device_path_to_unix_path(dp, &dev, &relpath, &abspath);
166 dp = (efidp)((char *)dp + efidp_size(dp));
167 printf(" %s\n", buf);
169 printf(" %*s:%s\n", len + (int)strlen(dev), dev, relpath);
179 asciidump(opt, optlen);
181 bindump(opt, optlen);
183 utf8dump(opt, optlen);
185 hexdump(opt, optlen);