diff options
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 23 | ||||
| -rw-r--r-- | include/linux/string.h | 4 | ||||
| -rw-r--r-- | lib/string.c | 39 |
3 files changed, 65 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ed2640c3e..8ab83036f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2477,10 +2477,29 @@ static void nand_set_defaults(struct nand_chip *chip, int busw) } #ifdef CONFIG_SYS_NAND_ONFI_DETECTION +/* + * sanitize ONFI strings so we can safely print them + */ +static void sanitize_string(char *s, size_t len) +{ + ssize_t i; + + /* null terminate */ + s[len - 1] = 0; + + /* remove non printable chars */ + for (i = 0; i < len - 1; i++) { + if (s[i] < ' ' || s[i] > 127) + s[i] = '?'; + } + + /* remove trailing spaces */ + strim(s); +} + static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) { int i; - while (len--) { crc ^= *p++ << 8; for (i = 0; i < 8; i++) @@ -2541,6 +2560,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, return 0; } + sanitize_string(p->manufacturer, sizeof(p->manufacturer)); + sanitize_string(p->model, sizeof(p->model)); if (!mtd->name) mtd->name = p->model; mtd->writesize = le32_to_cpu(p->byte_per_page); diff --git a/include/linux/string.h b/include/linux/string.h index 62390399b..9a8cbc24c 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -47,6 +47,10 @@ extern char * strchr(const char *,int); #ifndef __HAVE_ARCH_STRRCHR extern char * strrchr(const char *,int); #endif +extern char * skip_spaces(const char *); + +extern char *strim(char *); + #ifndef __HAVE_ARCH_STRSTR extern char * strstr(const char *,const char *); #endif diff --git a/lib/string.c b/lib/string.c index 2c4f0ec9a..c3ad055e2 100644 --- a/lib/string.c +++ b/lib/string.c @@ -214,6 +214,45 @@ char * strrchr(const char * s, int c) } #endif + +/** + * skip_spaces - Removes leading whitespace from @str. + * @str: The string to be stripped. + * + * Returns a pointer to the first non-whitespace character in @str. + */ +char *skip_spaces(const char *str) +{ + while (isspace(*str)) + ++str; + return (char *)str; +} + +/** + * strim - Removes leading and trailing whitespace from @s. + * @s: The string to be stripped. + * + * Note that the first trailing whitespace is replaced with a %NUL-terminator + * in the given string @s. Returns a pointer to the first non-whitespace + * character in @s. + */ +char *strim(char *s) +{ + size_t size; + char *end; + + s = skip_spaces(s); + size = strlen(s); + if (!size) + return s; + + end = s + size - 1; + while (end >= s && isspace(*end)) + end--; + *(end + 1) = '\0'; + + return s; +} #ifndef __HAVE_ARCH_STRLEN /** * strlen - Find the length of a string |