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| author | Tom Rini <trini@ti.com> | 2013-04-05 14:55:21 -0400 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-04-05 14:55:21 -0400 |
| commit | cd0f4fa1ca2901312ae78bc27d4edc8286fcbf1d (patch) | |
| tree | 244e08cd2c8702c9c6c5854eece41377716dbd31 /common/env_sf.c | |
| parent | bc5fd908d976cfd898e8cbb591e7220ddc8a684a (diff) | |
| download | u-boot-imx-cd0f4fa1ca2901312ae78bc27d4edc8286fcbf1d.zip u-boot-imx-cd0f4fa1ca2901312ae78bc27d4edc8286fcbf1d.tar.gz u-boot-imx-cd0f4fa1ca2901312ae78bc27d4edc8286fcbf1d.tar.bz2 | |
Revert "env: fix potential stack overflow in environment functions"
Wolfgang requested this be reverted and Rob agreed after further
discussion. This was a symptom of a larger problem we need to deal
with.
This reverts commit 60d7d5a63189c9f77a190c9965861dc15482c2d0.
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'common/env_sf.c')
| -rw-r--r-- | common/env_sf.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/common/env_sf.c b/common/env_sf.c index 9a592ba..d9e9085 100644 --- a/common/env_sf.c +++ b/common/env_sf.c @@ -58,12 +58,11 @@ DECLARE_GLOBAL_DATA_PTR; char *env_name_spec = "SPI Flash"; static struct spi_flash *env_flash; -static char env_buf[CONFIG_ENV_SIZE]; #if defined(CONFIG_ENV_OFFSET_REDUND) int saveenv(void) { - env_t *env_new = (env_t *)env_buf; + env_t env_new; ssize_t len; char *res, *saved_buffer = NULL, flag = OBSOLETE_FLAG; u32 saved_size, saved_offset, sector = 1; @@ -79,14 +78,14 @@ int saveenv(void) } } - res = (char *)env_new->data; + res = (char *)&env_new.data; len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); if (len < 0) { error("Cannot export environment: errno = %d\n", errno); return 1; } - env_new->crc = crc32(0, env_new->data, ENV_SIZE); - env_new->flags = ACTIVE_FLAG; + env_new.crc = crc32(0, env_new.data, ENV_SIZE); + env_new.flags = ACTIVE_FLAG; if (gd->env_valid == 1) { env_new_offset = CONFIG_ENV_OFFSET_REDUND; @@ -126,7 +125,7 @@ int saveenv(void) puts("Writing to SPI flash..."); ret = spi_flash_write(env_flash, env_new_offset, - CONFIG_ENV_SIZE, env_new); + CONFIG_ENV_SIZE, &env_new); if (ret) goto done; @@ -138,7 +137,7 @@ int saveenv(void) } ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags), - sizeof(env_new->flags), &flag); + sizeof(env_new.flags), &flag); if (ret) goto done; @@ -244,7 +243,7 @@ int saveenv(void) u32 saved_size, saved_offset, sector = 1; char *res, *saved_buffer = NULL; int ret = 1; - env_t *env_new = (env_t *)env_buf; + env_t env_new; ssize_t len; if (!env_flash) { @@ -277,13 +276,13 @@ int saveenv(void) sector++; } - res = (char *)env_new->data; + res = (char *)&env_new.data; len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); if (len < 0) { error("Cannot export environment: errno = %d\n", errno); goto done; } - env_new->crc = crc32(0, env_new->data, ENV_SIZE); + env_new.crc = crc32(0, env_new.data, ENV_SIZE); puts("Erasing SPI flash..."); ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, @@ -293,7 +292,7 @@ int saveenv(void) puts("Writing to SPI flash..."); ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, - CONFIG_ENV_SIZE, env_new); + CONFIG_ENV_SIZE, &env_new); if (ret) goto done; @@ -316,7 +315,7 @@ int saveenv(void) void env_relocate_spec(void) { - char *buf = env_buf; + char buf[CONFIG_ENV_SIZE]; int ret; env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, |