ae95160278
This version is patched so that: * ELF and API features are enabled. * The default environment is trimmed to just what's needed to boot. * The saveenv command writes to the file u-boot.env on the FAT partition. * The DTB file name is chosen based on the board model and passed to ubldr using the fdtfile env variable. ubldr loads the DTB from /boot/dtb/ on the FreeBSD partition. * By default, it loads ELF ubldr from file ubldr on the FAT partition to address 0x42000000, and launches it. For information about running FreeBSD on Allwinner SoCs, see https://wiki.freebsd.org/FreeBSD/arm/Allwinner Differential Revision: https://reviews.freebsd.org/D2874 Reviewed by: garga Approved by: garga
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
--- api/api.c.orig 2015-04-13 14:53:03 UTC
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+++ api/api.c
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@@ -495,45 +495,47 @@ static int API_env_set(va_list ap)
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*/
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static int API_env_enum(va_list ap)
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{
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- int i, n;
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- char *last, **next;
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+ int i;
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+ char *last, **next, *s;
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+ ENTRY *match, search;
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+ static char *buf;
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last = (char *)va_arg(ap, u_int32_t);
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if ((next = (char **)va_arg(ap, u_int32_t)) == NULL)
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return API_EINVAL;
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- if (last == NULL)
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- /* start over */
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- *next = ((char *)env_get_addr(0));
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- else {
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- *next = last;
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-
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- for (i = 0; env_get_char(i) != '\0'; i = n + 1) {
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- for (n = i; env_get_char(n) != '\0'; ++n) {
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- if (n >= CONFIG_ENV_SIZE) {
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- /* XXX shouldn't we set *next = NULL?? */
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- return 0;
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- }
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- }
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-
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- if (envmatch((uchar *)last, i) < 0)
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- continue;
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-
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- /* try to get next name */
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- i = n + 1;
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- if (env_get_char(i) == '\0') {
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- /* no more left */
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- *next = NULL;
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- return 0;
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- }
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-
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- *next = ((char *)env_get_addr(i));
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- return 0;
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+ /*
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+ * This leverages realloc's behavior of growing but never shrinking the
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+ * existing buffer.
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+ */
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+ if (last == NULL) {
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+ i = 0;
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+ buf = realloc(buf, 512); /* Start with reasonable size buf. */
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+ } else {
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+ buf = realloc(buf, strlen(last) + 1);
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+ strcpy(buf, last);
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+ if ((s = strchr(buf, '=')) != NULL)
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+ *s = 0;
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+ search.key = buf;
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+ if ((i = hsearch_r(search, FIND, &match, &env_htab, 0)) == 0) {
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+ i = API_EINVAL;
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+ goto done;
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}
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}
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+ /* hmatch on empty string is effectively "get next entry after i". */
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+ if ((i = hmatch_r("", i, &match, &env_htab)) == 0)
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+ goto done;
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+ buf = realloc(buf, strlen(match->key) + strlen(match->data) + 2);
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+ snprintf(buf, buflen, "%s=%s", match->key, match->data);
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+ *next = buf;
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return 0;
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+done:
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+ free(buf);
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+ buf = NULL;
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+ *next = NULL;
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+ return i;
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}
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/*
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