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1.1.2.1 misho 1: #include "global.h"
2: #include "ub_env.h"
3:
4:
1.1.2.4 misho 5: env_t *env;
6:
1.1.2.3 misho 7: static int
1.1.2.5 misho 8: ub_flash_io(const char *csSec, int mode)
1.1.2.3 misho 9: {
1.1.2.7 misho 10: int f, l, rlen;
1.1.2.5 misho 11: const char *str;
1.1.2.12 misho 12: size_t siz, esiz;
1.1.2.7 misho 13: ait_val_t v;
1.1.2.12 misho 14: u_int crc;
1.1.2.3 misho 15:
16: FTRACE(4);
17:
1.1.2.12 misho 18: str = cfg_getAttribute(&cfg, csSec, "drive_size");
1.1.2.6 misho 19: siz = strtol(str, NULL, 0);
20: if (!siz)
21: return -1;
1.1.2.12 misho 22: str = cfg_getAttribute(&cfg, csSec, "env_size");
23: if (!str)
24: esiz = siz - sizeof env->env_crc;
25: else
26: esiz = strtol(str, NULL, 0);
27: str = cfg_getAttribute(&cfg, csSec, "drive_name");
1.1.2.5 misho 28: if (!str) {
29: printf("Error:: drive not found!\n");
30: return -1;
31: }
32:
1.1.2.7 misho 33: cfg_loadAttribute(&cfg, "ube", "lock", &v, UBE_LOCK);
1.1.2.8 misho 34: l = open(AIT_GET_STR(&v), O_CREAT | O_EXCL | O_WRONLY, 0644);
1.1.2.7 misho 35: if (l == -1) {
1.1.2.8 misho 36: printf("Error:: Locked u-boot-env map %s\n", AIT_GET_STR(&v));
1.1.2.7 misho 37: AIT_FREE_VAL(&v);
38: return -1;
39: }
40:
1.1.2.5 misho 41: f = open(str, mode);
1.1.2.3 misho 42: if (f == -1) {
1.1.2.5 misho 43: printf("Error:: Can't access u-boot-env device %s\n", str);
1.1.2.7 misho 44: close(l);
45: unlink(AIT_GET_STR(&v));
46: AIT_FREE_VAL(&v);
1.1.2.3 misho 47: return -1;
48: }
49:
50: if (mode & O_RDWR) {
1.1.2.13! misho 51: env->env_crc = crc32(0, (u_char*) env->env_data, esiz);
1.1.2.6 misho 52: rlen = write(f, env, siz);
53: if (rlen != siz)
54: printf("Error:: written %d bytes != %d\n", rlen, siz);
55: else
56: VERB(3) printf("Written %d bytes\n", rlen);
57: lseek(f, 0, SEEK_SET);
1.1.2.3 misho 58: }
59:
1.1.2.6 misho 60: rlen = read(f, env, siz);
61: if (rlen != siz)
62: printf("Error:: readed %d bytes != %d\n", rlen, siz);
63: else
64: VERB(3) printf("Readed %d bytes\n", rlen);
65:
1.1.2.12 misho 66: crc = crc32(0, (u_char*) env->env_data, esiz);
67: if (crc != env->env_crc)
1.1.2.13! misho 68: VERB(1) printf("Warning:: Bad CRC, Flash crc32 0x%x != 0x%x\n",
! 69: env->env_crc, crc);
1.1.2.12 misho 70:
1.1.2.3 misho 71: close(f);
1.1.2.7 misho 72: close(l);
73: unlink(AIT_GET_STR(&v));
74: AIT_FREE_VAL(&v);
75: return 0;
1.1.2.3 misho 76: }
77:
1.1.2.10 misho 78: static inline const char *
79: ub_envmatch(const char *csName, const char *e)
80: {
81: while (*csName == *e++)
82: if (*csName++ == '=')
83: return e;
84: if (!*csName && *(e - 1) == '=')
85: return e;
86:
87: return NULL;
88: }
89:
1.1.2.4 misho 90: int
91: ub_load(const char *csSec)
92: {
93: const char *str;
94: size_t siz;
95:
1.1.2.5 misho 96: FTRACE(4);
97:
1.1.2.12 misho 98: str = cfg_getAttribute(&cfg, csSec, "drive_size");
1.1.2.4 misho 99: siz = strtol(str, NULL, 0);
100: if (!siz)
101: return -1;
102:
103: env = e_malloc(siz);
104: if (!env) {
105: ELIBERR(elwix);
106: return -1;
107: }
108:
1.1.2.7 misho 109: return ub_flash_io(csSec, O_RDONLY);
1.1.2.4 misho 110: }
111:
112: void
113: ub_unload()
114: {
1.1.2.5 misho 115: FTRACE(4);
116:
1.1.2.4 misho 117: if (env)
118: e_free(env);
119: }
120:
1.1.2.2 misho 121: const char*
1.1.2.5 misho 122: ub_getenv(const char *csSec, const char *csName)
1.1.2.2 misho 123: {
1.1.2.10 misho 124: char *e, *nxt;
125: size_t dlen;
1.1.2.2 misho 126: const char *str = NULL;
127:
1.1.2.3 misho 128: FTRACE(3);
129:
1.1.2.12 misho 130: str = cfg_getAttribute(&cfg, csSec, "env_size");
131: if (!str) {
132: str = cfg_getAttribute(&cfg, csSec, "drive_size");
133: if (!str)
1.1.2.13! misho 134: return NULL;
1.1.2.12 misho 135: }
1.1.2.10 misho 136: dlen = strtol(str, NULL, 0);
137: if (!dlen)
138: return NULL;
139: else
140: dlen--;
141:
142: for (e = env->env_data; *e; e = nxt + 1) {
143: for (nxt = e; *nxt; nxt++)
144: if (nxt >= env->env_data + dlen) {
145: printf("Error:: environment not terminated\n");
146: return NULL;
147: }
148:
149: str = ub_envmatch(csName, e);
150: if (str)
151: break;
152: }
153:
1.1.2.2 misho 154: return str;
155: }
156:
157: int
1.1.2.5 misho 158: ub_setenv(const char *csSec, const char *csName, const char *csValue)
1.1.2.2 misho 159: {
1.1.2.11 misho 160: char *e, *nxt;
161: size_t dlen, len;
162: const char *str, *old = NULL;
163:
1.1.2.3 misho 164: FTRACE(3);
165:
1.1.2.12 misho 166: str = cfg_getAttribute(&cfg, csSec, "env_size");
167: if (!str) {
168: str = cfg_getAttribute(&cfg, csSec, "drive_size");
169: if (!str)
170: return -1;
171: }
1.1.2.11 misho 172: dlen = strtol(str, NULL, 0);
173: if (!dlen)
174: return -1;
175: else
176: dlen--;
177:
178: for (e = env->env_data; *e; e = nxt + 1) {
179: for (nxt = e; *nxt; nxt++)
180: if (nxt >= env->env_data + dlen) {
181: printf("Error:: environment not terminated\n");
182: return -1;
183: }
184:
185: old = ub_envmatch(csName, e);
186: if (old)
187: break;
188: }
189:
190: /* Delete any existing definition */
191: if (old) {
192: if (!*++nxt)
193: *e = 0;
194: else
195: while (42) {
196: *e = *nxt++;
197: if (!*e && !*nxt)
198: break;
199: e++;
200: }
201: *++e = 0;
202: }
203:
204: if (csValue) {
205: /* Append new definition at the end */
206: for (e = env->env_data; *e || *(e + 1); e++);
207: if (e > env->env_data)
208: e++;
209: /* "name" + "=" + "val" +"\0\0" > u-boot-env size */
210: len = strlen(csName) + 2; /* add '=' for first arg, ' ' for all others */
211: len += strlen(csValue) + 1;
212: if (len > env->env_data + dlen - e) {
213: printf("Error:: Environment overflow!\n");
214: return -1;
215: }
216:
217: /* av pair */
218: while ((*e = *csName++))
219: e++;
220: *e = '=';
221: while ((*++e = *csValue++));
222:
223: /* end is marked with double '\0' */
224: *++e = 0;
225: }
226:
227: if (ub_flash_io(csSec, O_RDWR)) {
228: printf("Error:: Can't write environment to flash!\n");
229: return -1;
230: }
231:
1.1.2.2 misho 232: return 0;
233: }
1.1.2.9 misho 234:
235: int
236: ub_env(const char *csSec)
237: {
238: char *e, *nxt;
239: size_t dlen;
240: const char *str;
241:
242: FTRACE(3);
243:
1.1.2.12 misho 244: str = cfg_getAttribute(&cfg, csSec, "env_size");
245: if (!str) {
246: str = cfg_getAttribute(&cfg, csSec, "drive_size");
247: if (!str)
248: return -1;
249: }
1.1.2.9 misho 250: dlen = strtol(str, NULL, 0);
251: if (!dlen)
252: return -1;
253: else
254: dlen--;
255:
256: for (e = env->env_data; *e; e = nxt + 1) {
257: for (nxt = e; *nxt; nxt++)
258: if (nxt >= env->env_data + dlen) {
259: printf("Error:: environment not terminated\n");
260: return -1;
261: }
262:
263: printf("%s\n", e);
264: }
265:
266: return 0;
267: }